HEIDENHAIN TNC 640 (34059x-18) DIN/ISO User manual

TNC640

User’s Manual

ISO Programming

NC Software

34059x-18

English (en)

10/2023

Controls and displays

Keys

If you are using a TNC640 with touch control, you can

replace some keystrokes with gestures.

Further information: "Operating the Touchscreen",

Page 553

Keys on the screen

Key Function

Select screen layout

Toggle the display between machine

operating mode, programming

mode, and a third desktop

Soft keys for selecting functions on

screen

Switch the soft-key rows

Alphabetic keyboard

Key Function

File names, comments

ISO programming

Select the next element; for example,

an input field, button, or selection

option

SHIFT + TAB Select the previous element

Open the HEROS menu

Machine operating modes

Key Function

Manual operation

Electronic handwheel

Positioning with Manual Data Input

Program Run, Single Block

Program Run, Full Sequence

Programming modes

Key Function

Programming

Test Run

2HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Controls and displays

Entering and editing coordinate

axes and numbers

Key Function

. . .

Select the coordinate axes or enter

them in the NC program

. . .

Numbers

Decimal separator / Reverse

algebraic sign

Polar coordinate entry /

Incremental values

Q parameter programming /

Q parameter status

Capture actual position

NO

ENT

Skip dialog questions, delete words

Confirm entry and resume dialog

Conclude the NC block, end your

input

Clear entries or error message

Abort dialog, delete program section

Tool functions

Key Function

Define tool data in the NC program

Call tool data

Managing NC programs and files,

control functions

Key Function

Select or delete NC programs or

files, external data transfer

Define program call, select datum

and point tables

Select MOD functions

Display help text for NC error

messages, call TNCguide

Display all current error messages

Show calculator

Show special functions

Currently not assigned

Navigation keys

Key Function

Position the cursor

Go directly to NC blocks, cycles, and

parameter functions

Navigate to the beginning of a

program or table

Navigate to the end of the program

or table row

Navigate up one page

Navigate down one page

Select the next tab in forms

Up/down one dialog box or button

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 3

Controls and displays

Cycles, subprograms, and

program-section repeats

Key Function

Define touch probe cycles

Define and call cycles

Enter and call subprograms and

program section repeats

Enter program stop in an

NC program

Programming path contours

Key Function

Contour approach and departure

FK free contour programming

Straight line

Circle center/pole for polar coordi-

nates

Circular arc with center

Circular arc with radius

Circular arc with tangential transition

Chamfer/rounding arc

Potentiometer for feed rate

and spindle speed

Feed rate Spindle speed

3D mouse

A HEIDENHAIN 3D mouse is available as a complement

to the keyboard unit.

A 3D mouse allows you to manipulate objects as

intuitively as if you were holding them in your hands.

This is made possible through simultaneous six-degree-

of-freedom motion:

2D movement in the XY plane

3D rotation around the axes X, Y, and Z

Zooming in or zooming out

These options increase the ease of use in the following

applications in particular:

CAD import

Material removal simulation

3D applications of an external PC that you can

use on the control based on software option 133

(Remote Desktop Manager)

4HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Table of contents

1 Basic Information................................................................................................................... 31

2 First Steps............................................................................................................................. 47

3 Fundamentals........................................................................................................................ 65

4 Tools...................................................................................................................................... 125

5 Programming Contours.......................................................................................................... 141

6 Programming Aids................................................................................................................. 193

7 Miscellaneous Functions........................................................................................................ 227

8 Subprograms and Program Section Repeats.......................................................................... 247

9 Programming QParameters................................................................................................... 269

10 Special Functions................................................................................................................... 343

11 Multiple-axis Machining......................................................................................................... 407

12 Data Transfer from CAD Files................................................................................................ 467

13 Pallets.................................................................................................................................... 495

14 Turning.................................................................................................................................. 515

15 Grinding................................................................................................................................. 543

16 Operating the Touchscreen.................................................................................................... 553

17 Tables and Overviews............................................................................................................ 567

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 5

Table of contents

6HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Table of contents

1 Basic Information................................................................................................................... 31

1.1 About this manual...................................................................................................................... 32

1.2 Control model, software and features........................................................................................ 34

Software options.................................................................................................................................................... 36

New functions 34059x-18................................................................................................................................... 41

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Table of contents

2 First Steps............................................................................................................................. 47

2.1 Overview..................................................................................................................................... 48

2.2 Switching on the machine.......................................................................................................... 49

Acknowledging the power interruption............................................................................................................. 49

2.3 Programming the first part......................................................................................................... 50

Selecting the operating mode............................................................................................................................ 50

Important controls and displays........................................................................................................................ 50

Creating a new NC program / file management............................................................................................ 51

Defining a workpiece blank................................................................................................................................. 52

Program layout....................................................................................................................................................... 53

Programming a simple contour......................................................................................................................... 54

Creating a cycle program.................................................................................................................................... 60

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Table of contents

3 Fundamentals........................................................................................................................ 65

3.1 The TNC640.............................................................................................................................. 66

HEIDENHAIN Klartext and ISO........................................................................................................................... 66

Compatibility........................................................................................................................................................... 66

3.2 Visual display unit and operating panel...................................................................................... 67

Display screen........................................................................................................................................................ 67

Setting the screen layout..................................................................................................................................... 67

Operating panel...................................................................................................................................................... 68

Extended Workspace Compact.......................................................................................................................... 71

3.3 Modes of operation.................................................................................................................... 74

Manual Operation and El. Handwheel............................................................................................................... 74

Positioning with Manual Data Input.................................................................................................................. 74

Programming.......................................................................................................................................................... 75

Test Run.................................................................................................................................................................. 75

Program Run, Full Sequence and Program Run, SingleBlock..................................................................... 76

3.4 NC fundamentals........................................................................................................................ 77

Position encoders and reference marks.......................................................................................................... 77

Programmable axes.............................................................................................................................................. 77

Reference systems................................................................................................................................................ 78

Designation of the axes on milling machines................................................................................................. 90

Polar coordinates................................................................................................................................................... 90

Absolute and incremental workpiece positions.............................................................................................. 91

Selecting the preset.............................................................................................................................................. 92

3.5 Creating and entering NC programs........................................................................................... 93

Structure of an NC program in ISO format..................................................................................................... 93

Defining the workpiece blank: G30/G31........................................................................................................... 94

Creating a new NC program............................................................................................................................... 99

Programming tool movements in ISO.............................................................................................................. 100

Actual position capture........................................................................................................................................ 102

Editing an NC program........................................................................................................................................ 103

The control's search function............................................................................................................................. 107

3.6 File management........................................................................................................................ 109

Files........................................................................................................................................................................... 109

Displaying externally generated files on the control...................................................................................... 111

Directories............................................................................................................................................................... 111

Paths......................................................................................................................................................................... 111

Overview: Functions of the file manager......................................................................................................... 112

Calling the File Manager...................................................................................................................................... 113

Selecting drives, directories and files............................................................................................................... 114

Creating a new directory...................................................................................................................................... 116

Creating new file.................................................................................................................................................... 116

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Table of contents

Copying a single file.............................................................................................................................................. 116

Copying files into another directory.................................................................................................................. 117

Copying a table...................................................................................................................................................... 118

Copying a directory............................................................................................................................................... 119

Choosing one of the last files selected............................................................................................................ 119

Deleting a file.......................................................................................................................................................... 120

Deleting a directory............................................................................................................................................... 120

Tagging files........................................................................................................................................................... 121

Renaming a file...................................................................................................................................................... 122

Sorting files............................................................................................................................................................. 122

Additional functions.............................................................................................................................................. 123

10 HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Table of contents

4 Tools...................................................................................................................................... 125

4.1 Entering tool-related data........................................................................................................... 126

Feed rate F.............................................................................................................................................................. 126

Spindle speed S..................................................................................................................................................... 127

4.2 Tool data.................................................................................................................................... 128

Requirements for tool compensation............................................................................................................... 128

Tool number, tool name...................................................................................................................................... 128

Tool length L........................................................................................................................................................... 129

Tool radius R.......................................................................................................................................................... 131

Delta values for lengths and radii...................................................................................................................... 131

Entering tool data into the NC program........................................................................................................... 131

Calling the tool data.............................................................................................................................................. 132

Tool change............................................................................................................................................................ 134

4.3 Tool compensation..................................................................................................................... 137

Introduction............................................................................................................................................................. 137

Tool length compensation................................................................................................................................... 137

Tool radius compensation................................................................................................................................... 138

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 11

Table of contents

5 Programming Contours.......................................................................................................... 141

5.1 Tool movements......................................................................................................................... 142

Path functions........................................................................................................................................................ 142

FK free contour programming............................................................................................................................ 142

Miscellaneous functions M................................................................................................................................. 142

Subprograms and program section repeats................................................................................................... 143

Programming with Q parameters...................................................................................................................... 143

5.2 Fundamentals of path functions................................................................................................. 144

Programming tool movements for machining............................................................................................... 144

5.3 Approaching and departing a contour........................................................................................ 147

Starting point and end point............................................................................................................................... 147

Tangential approach and departure.................................................................................................................. 149

Overview: Types of paths for contour approach and departure................................................................. 150

Important positions for approach and departure........................................................................................... 151

Approaching on a straight line with tangential connection: APPR LT........................................................ 153

Approaching on a straight line perpendicular to the first contour point: APPR LN.................................. 153

Approaching on a circular path with tangential connection: APPR CT...................................................... 154

Approaching on a circular path with tangential connection from a straight line to the contour:

APPR LCT................................................................................................................................................................ 155

Departing in a straight line with tangential connection: DEP LT................................................................. 156

Departing in a straight line perpendicular to the last contour point: DEP LN........................................... 156

Departing on a circular path with tangential connection: DEP CT.............................................................. 157

Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT............. 157

5.4 Path contours — Cartesian coordinates...................................................................................... 158

Overview of path functions................................................................................................................................. 158

Programming path functions.............................................................................................................................. 158

Straight line in rapid traverse G00 or straight line with feed rate F G01................................................... 159

Inserting a chamfer between two straight lines............................................................................................. 160

Rounded corners G25........................................................................................................................................... 161

Circle center I, J..................................................................................................................................................... 162

Circular arc around circle center........................................................................................................................ 163

Circular arc G02/G03/G05 with fixed radius................................................................................................... 165

Circular arc G06 with tangential transition...................................................................................................... 167

Superimposing a linear motion on a circular contour................................................................................... 168

Example: Linear movements and chamfers with Cartesian coordinates.................................................. 169

Example: Circular movements with Cartesian coordinates......................................................................... 170

Example: Full circle with Cartesian coordinates............................................................................................. 171

5.5 Path contours – Polar coordinates............................................................................................. 172

Overview................................................................................................................................................................... 172

Datum for polar coordinates: pole I, J.............................................................................................................. 173

Straight line in rapid traverse G10 or straight line with feed rate F G11................................................... 173

Circular path G12/G13/G15 around pole I, J.................................................................................................. 174

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Table of contents

Circle G16 with tangential connection.............................................................................................................. 174

Helix.......................................................................................................................................................................... 175

Example: Linear movement with polar coordinates...................................................................................... 177

Example: Helix........................................................................................................................................................ 178

5.6 Path contours – FK free contour programming.......................................................................... 179

Fundamentals......................................................................................................................................................... 179

Defining the working plane.................................................................................................................................. 180

FK programming graphics................................................................................................................................... 181

Initiating the FK dialog......................................................................................................................................... 182

Pole for FK programming.................................................................................................................................... 182

Free straight line programming.......................................................................................................................... 183

Free circular path programming........................................................................................................................ 184

Input possibilities................................................................................................................................................... 185

Auxiliary points....................................................................................................................................................... 188

Relative data........................................................................................................................................................... 189

Example: FK programming 1.............................................................................................................................. 191

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 13

Table of contents

6 Programming Aids................................................................................................................. 193

6.1 GOTO function............................................................................................................................ 194

Using the GOTO key............................................................................................................................................. 194

6.2 Display of NC programs............................................................................................................. 195

Syntax highlighting................................................................................................................................................ 195

Scrollbar................................................................................................................................................................... 195

6.3 Adding comments...................................................................................................................... 196

Application............................................................................................................................................................... 196

Entering comments during programming........................................................................................................ 196

Inserting comments after program entry........................................................................................................ 196

Entering a comment in a separate NC block.................................................................................................. 196

Commenting out an existing NC block............................................................................................................ 196

Functions for editing a comment...................................................................................................................... 197

6.4 Freely editing an NC program..................................................................................................... 198

6.5 Skipping NC blocks.................................................................................................................... 199

Insert a slash (/).................................................................................................................................................... 199

Delete the slash (/)................................................................................................................................................ 199

6.6 Structuring NC programs............................................................................................................ 200

Definition and applications.................................................................................................................................. 200

Displaying the program structure window / Changing the active window................................................ 200

Inserting a structure block in the program window....................................................................................... 201

Selecting blocks in the program structure window....................................................................................... 201

6.7 Calculator................................................................................................................................... 202

Operation................................................................................................................................................................. 202

6.8 Cutting data calculator............................................................................................................... 205

Application............................................................................................................................................................... 205

Working with cutting data tables....................................................................................................................... 207

6.9 Programming graphics............................................................................................................... 210

Activating and deactivating programming graphics...................................................................................... 210

Generating a graphic for an existing NC program......................................................................................... 211

Block number display ON/OFF........................................................................................................................... 211

Erasing the graphic............................................................................................................................................... 211

Showing grid lines................................................................................................................................................. 211

Magnification or reduction of details................................................................................................................ 212

6.10 Error messages.......................................................................................................................... 213

Display of errors.................................................................................................................................................... 213

Opening the error window................................................................................................................................... 213

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Detailed error messages...................................................................................................................................... 214

INTERNAL INFO soft key..................................................................................................................................... 214

GROUPING soft key.............................................................................................................................................. 215

ACTIVATE AUTOMATIC SAVING soft key........................................................................................................ 215

Deleting errors........................................................................................................................................................ 216

Error log................................................................................................................................................................... 217

Keystroke log.......................................................................................................................................................... 218

Informational texts................................................................................................................................................ 219

Saving service files................................................................................................................................................ 219

Closing the error window..................................................................................................................................... 219

6.11 TNCguide: context-sensitive help............................................................................................... 220

Application............................................................................................................................................................... 220

Using TNCguide..................................................................................................................................................... 221

Downloading current help files........................................................................................................................... 224

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 15

Table of contents

7 Miscellaneous Functions........................................................................................................ 227

7.1 Entering miscellaneous functions M and STOP.......................................................................... 228

Fundamentals......................................................................................................................................................... 228

7.2 Miscellaneous functions for program run inspection, spindle and coolant.................................. 229

Overview................................................................................................................................................................... 229

7.3 Miscellaneous functions for coordinate entries.......................................................................... 230

Programming machine-referenced coordinates: M91/M92......................................................................... 230

Moving to positions in a non-tilted input coordinate system with a tilted working plane: M130.......... 232

7.4 Miscellaneous functions for path behavior................................................................................. 233

Machining small contour steps: M97............................................................................................................... 233

Machining open contour corners: M98............................................................................................................ 234

Feed rate factor for plunging movements: M103.......................................................................................... 235

Feed rate in millimeters per spindle revolution: M136.................................................................................. 236

Feed rate for circular arcs: M109/M110/M111.............................................................................................. 237

Pre-calculating radius-compensated contours (LOOKAHEAD): M120...................................................... 238

Superimposing handwheel positioning during program run: M118........................................................... 240

Retraction from the contour in the tool-axis direction: M140...................................................................... 242

Suppressing touch probe monitoring: M141................................................................................................... 244

Deleting basic rotation: M143............................................................................................................................. 244

Lifting off the tool automatically from the contour at NC stop: M148...................................................... 245

Rounding corners: M197...................................................................................................................................... 246

16 HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Table of contents

8 Subprograms and Program Section Repeats.......................................................................... 247

8.1 Labeling subprograms and program section repeats.................................................................. 248

Label......................................................................................................................................................................... 248

8.2 Subprograms.............................................................................................................................. 249

Operating sequence.............................................................................................................................................. 249

Programming notes.............................................................................................................................................. 249

Programming the subprogram........................................................................................................................... 249

Calling a subprogram........................................................................................................................................... 249

8.3 Program-section repeats............................................................................................................ 250

Label G98................................................................................................................................................................ 250

Operating sequence.............................................................................................................................................. 250

Programming notes.............................................................................................................................................. 250

Programming a program section repeat.......................................................................................................... 251

Calling a program section repeat...................................................................................................................... 251

8.4 Calling an external NC program................................................................................................. 252

Overview of the soft keys.................................................................................................................................... 252

Operating sequence.............................................................................................................................................. 253

Programming notes.............................................................................................................................................. 253

Calling an external NC program......................................................................................................................... 255

8.5 Point tables................................................................................................................................ 257

Creating a point table........................................................................................................................................... 257

Hiding single points for the machining process............................................................................................. 258

Selecting a point table in the NC program...................................................................................................... 259

Using point tables.................................................................................................................................................. 260

Definition.................................................................................................................................................................. 260

8.6 Nesting....................................................................................................................................... 261

Types of nesting.................................................................................................................................................... 261

Nesting depth......................................................................................................................................................... 261

Subprogram within a subprogram.................................................................................................................... 262

Repeating program section repeats.................................................................................................................. 263

Repeating a subprogram..................................................................................................................................... 264

8.7 Programming examples.............................................................................................................. 265

Example: Milling a contour in several infeeds................................................................................................. 265

Example: Groups of holes................................................................................................................................... 266

Example: Group of holes with multiple tools.................................................................................................. 267

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 17

Table of contents

9 Programming QParameters................................................................................................... 269

9.1 Principle and overview of functions........................................................................................... 270

Q parameter types................................................................................................................................................. 271

Programming notes.............................................................................................................................................. 273

Calling Q parameter functions............................................................................................................................ 274

9.2 Part families—Q parameters in place of numerical values.......................................................... 275

Application............................................................................................................................................................... 275

9.3 Describing contours with mathematical functions...................................................................... 276

Application............................................................................................................................................................... 276

Overview................................................................................................................................................................... 277

Programming fundamental operations............................................................................................................ 278

9.4 Trigonometric functions............................................................................................................. 280

Definitions................................................................................................................................................................ 280

Programming trigonometric functions............................................................................................................. 280

9.5 Calculation of circles.................................................................................................................. 282

Application............................................................................................................................................................... 282

9.6 If-then decisions with Q parameters........................................................................................... 283

Application............................................................................................................................................................... 283

Jump conditions.................................................................................................................................................... 283

Programming if-then decisions.......................................................................................................................... 285

9.7 Entering formulas directly.......................................................................................................... 286

Entering formulas.................................................................................................................................................. 286

Calculation rules.................................................................................................................................................... 286

Overview................................................................................................................................................................... 288

Example: Trigonometric function....................................................................................................................... 290

9.8 Checking and changing Q parameters........................................................................................ 291

Procedure................................................................................................................................................................ 291

9.9 Additional functions................................................................................................................... 293

Overview................................................................................................................................................................... 293

D14 Output of error messages.......................................................................................................................... 294

D16 – Formatted output of text and Qparameter values............................................................................ 300

D18 – Reading system data............................................................................................................................... 310

D19 Transferring values to PLC......................................................................................................................... 310

D20 NC and PLC synchronization..................................................................................................................... 311

D29 Transferring values to the PLC.................................................................................................................. 312

D37 – EXPORT....................................................................................................................................................... 312

D38 – Sending information from the NC program........................................................................................ 313

18 HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

Table of contents

9.10 String parameters....................................................................................................................... 315

String processing functions................................................................................................................................ 315

Assigning string parameters............................................................................................................................... 316

Chain-linking string parameters......................................................................................................................... 317

Converting a numerical value to a string parameter..................................................................................... 318

Copying a substring from a string parameter................................................................................................ 319

Reading system data............................................................................................................................................ 320

Converting a string parameter to a numerical value..................................................................................... 321

Testing a string parameter.................................................................................................................................. 322

Determining the length of a string parameter................................................................................................ 323

Comparing the lexical order of two alphanumerical strings........................................................................ 324

Reading out machine parameters..................................................................................................................... 325

9.11 Preassigned Q parameters......................................................................................................... 327

Values from the PLC: Q100 to Q107................................................................................................................ 327

Active tool radius: Q108....................................................................................................................................... 327

Tool axis: Q109...................................................................................................................................................... 328

Spindle status: Q110............................................................................................................................................. 328

Coolant on/off: Q111............................................................................................................................................ 328

Overlap factor: Q112............................................................................................................................................. 328

Unit of measure in the NC program Q113....................................................................................................... 329

Tool length: Q114.................................................................................................................................................. 329

Measurement result from programmable touch-probe cycles: Q115 to Q119........................................ 329

Qparameters Q115 and Q116 for automatic tool measurement............................................................... 330

Calculated coordinates of the rotary axes: Q120 to Q122........................................................................... 330

Measurement results from touch-probe cycles............................................................................................. 331

Checking the setup situation: Q601.................................................................................................................. 334

9.12 Programming examples.............................................................................................................. 335

Example: Rounding a value................................................................................................................................. 335

Example: Ellipse..................................................................................................................................................... 336

Example: Concave cylinder machined with ball-nose cutter....................................................................... 338

Example: Convex sphere machined with end mill.......................................................................................... 340

HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023 19

Table of contents

10 Special Functions................................................................................................................... 343

10.1 Overview of special functions.................................................................................................... 344

Main menu for SPEC FCT special functions................................................................................................... 344

Program defaults menu....................................................................................................................................... 345

Functions for contour and point machining menu........................................................................................ 345

Menu for defining different ISO functions....................................................................................................... 346

10.2 Function mode............................................................................................................................ 347

Program function mode....................................................................................................................................... 347

Function Mode Set................................................................................................................................................ 347

10.3 Dynamic Collision Monitoring (option40)................................................................................... 348

Function................................................................................................................................................................... 348

Activating and deactivating collision monitoring in the NC program......................................................... 350

10.4 Adaptive Feed Control (AFC) (option45).................................................................................... 352

Application............................................................................................................................................................... 352

Defining basic AFC settings................................................................................................................................ 353

Programming AFC................................................................................................................................................. 355

10.5 Machining with polar kinematics................................................................................................ 358

Overview................................................................................................................................................................... 358

Activating FUNCTION POLARKIN...................................................................................................................... 359

Deactivating FUNCTION POLARKIN.................................................................................................................. 362

Example: SL cycles in the polar kinematics.................................................................................................... 363

10.6 Defining ISO functions................................................................................................................ 364

Overview................................................................................................................................................................... 364

10.7 Modifying presets....................................................................................................................... 365

Activating a preset................................................................................................................................................ 365

Copying a preset.................................................................................................................................................... 367

Correcting a preset............................................................................................................................................... 368

10.8 Datum table................................................................................................................................ 369

Application............................................................................................................................................................... 369

Description.............................................................................................................................................................. 369

Creating a datum table........................................................................................................................................ 370

Opening and editing a datum table................................................................................................................... 371

Activating the datum table in your NC program............................................................................................. 373

Activating the datum table manually................................................................................................................ 373

10.9 Compensation table.................................................................................................................... 374

Application............................................................................................................................................................... 374

Types of compensation tables........................................................................................................................... 374

Creating a compensation table.......................................................................................................................... 376

20 HEIDENHAIN | TNC640 | ISO Programming User's Manual | 10/2023

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HEIDENHAIN TNC 640 (34059x-18) DIN/ISO User manual

HEIDENHAIN TNC 640 (34059x-18) DIN/ISO User manual

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