heidenhain TNC 426, TNC 430 User Manual

TNC 426 TNC 430

NC Software 280 476-xx 280 477-xx

User’s Manual

HEIDENHAIN Conv ersational

Format

10/2001

Controls on the visual display unit

Split screen layout Switch between machining or

programming modes Soft keys for selecting functions in screen

Switching the soft-key rows Changing the screen settings

(only BC 120)

Typewriter keyboard for entering letters and symbols

File names Comments

ISO programs

Machine operating modes

MANUAL OPERATION

ELECTRONIC HANDWHEEL

POSITIONING WITH MDI

PROGRAM RUN, SINGLE BLOCK

PROGRAM RUN, FULL SEQUENCE

Programming modes

PROGRAMMING AND EDITING

TEST RUN

Program/file management, TNC functions

Select or delete programs and files External data transfer

Enter program call in a program

MOD functions

Displaying help texts for NC error messages

Pocket calculator

Moving the highlight, going directly to blocks, cycles and parameter functions

Go directly to blocks, cycles and parameter

Move highlight

functions

Override control knobs for feed rate/spindle speed

100

F %

100

S %

Programming path movements

Approach/depart contour

FK free contour programming

Straight line

Circle center/pole for polar coordinates

Circle with center

Circle with radius

Circular arc with tangential connection

Chamfer

Corner rounding

Tool functions

Enter and call tool length and radius

Cycles, subprograms and program section repeats

Program stop in a program

Enter touch probe functions in a program

Define and call cycles Enter and call labels for subprogramming and

program section repeats

Coordinate axes and numbers: Entering and editing

. . . . . .

Decimal point

Change arithmetic sign

Polar coordinates

Incremental dimensions

Q parameters

Capture actual position

Skip dialog questions, delete words

Confirm entry and resume dialog

End block Clear numerical entry or TNC error

message Abort dialog, delete program section

Select coordinate axes or enter them into the program

Numbers

TNC Models, Software and Features

This manual describes functions and features provided by the TNCs as of the following NC software numbers.

TNC Model NC Software No.

TNC 426 CB, TNC 426 PB 280 476-xx

TNC 426 CF, TNC 426 PF 280 477-xx

TNC 426 M 280 476-xx

TNC 426 ME 280 477-xx

TNC 430 CA, TNC 430 PA 280 476-xx

TNC 430 CE, TNC 430 PE 280 477-xx

TNC 430 M 280 476-xx

TNC 430 ME 280 477-xx

The suffixes E and F indicate the export versions of the TNC which have the following limitations:

n Linear movement is possible in no more than 4 axes simultaneously.

The machine tool builder adapts the useable features of the TNC to his machine by setting machine parameters. Some of the functions described in this manual may not be among the features provided by your machine tool.

TNC functions that may not be available on your machine include:

n Probing function for the 3-D touch probe n Digitizing option n Tool measurement with the TT 130 n Rigid tapping n Returning to the contour after an interruption

Please contact your machine tool builder to become familiar with the features of your machine.

Many machine manufacturers, as well as HEIDENHAIN, offer programming courses for the TNCs. We recommend these courses as an effective way of improving your programming skill and sharing information and ideas with other TNC users.

Touch Probe Cycles User's Manual:

All of the touch probe functions are described in a separate manual. Please contact HEIDENHAIN if you require a copy of this User's Manual. ID number: 329 203-xx.

Location of use

The TNC complies with the limits for a Class A device in accordance with the specifications in EN 55022, and is intended for use primarily in industrially-zoned areas.

HEIDENHAIN TNC 426, TNC 430 I

New features of the NC software 280 476-xx

n Thread milling cycles 262 to 267 (see “Fundamentals of thread

milling” on page 235)

n Tapping Cycle 209 with chip breaking (see “TAPPING WITH CHIP

BREAKING (Cycle 209)” on page 233)

n Cycle 247(see “DATUM SETTING (Cycle 247)” on page 324) n Cycle run by means of point tables (see “Point Tables” on page 206) n Entering two miscellaneous functions M (see “Entering

Miscellaneous Functions M and STOP” on page 176)

n Program stop with M01 (see “Optional Program Run Interruption”

on page 416)

n Starting NC programs automatically (see “Automatic Program Start”

on page 414)

n Selecting datum tables in the NC program (see “Selecting a datum

table in the part program” on page 322)

n Editing the active datum table in the program run mode of operation

(see “Edit a pocket table in a Program Run operating mode.” on page 323)

n Selecting the screen layout for pallet tables (see “Screen layout for

executing pallet tables” on page 83)

n New columns in the tool table for managing TS calibration data (see

“Entering tool data in tables” on page 101)

n Management of unlimited calibration data with the TS triggering

touch probes (see User’s Manual for Touch Probe Cycles)

n Cycles for automatic tool measurement with the TT tool touch probe

in ISO (see User's Manual for Touch Probe Cycles)

n New Cycle 440 for measuring the axial displacement of a machine

with the TT tool touch probe (see User's Manual for Touch Probe Cycles)

n Support of Teleservice functions (see “Teleservice” on page 444) n Setting the display mode for blocks with more than one line, e.g. for

cycle definitions (see “MP7281.0 Programming and Editing operating mode” on page 457)

n New SYSREAD function 501 for reading REF values from datum

tables (see “FN18: SYS-DATUM READ Read system data” on page

373)

n M140 (see “Retraction from the contour in the tool-axis direction:

M140” on page 188)

n M141 (see “Suppressing touch probe monitoring: M141” on page

189)

n M142 (see “Delete modal program information: M142” on page

190)

n M143 (see “Delete basic rotation: M143” on page 190)

M144

(see “Compensating the machine’s kinematic configuration

for ACTUAL/NOMINAL positions at end of block: M144” on page

197)

n External access with the LSV-2 interface (see “Permitting/

Restricting external access” on page 445)

n Tool-oriented machining (see “Pallet Operation with Tool-Oriented

Machining” on page 84)

Changed features of the NC software 280 476-xx

n Programming PGM CALL (see “Separate Program as Subprogram”

on page 345)

n Programming CYCLE CALL (see “Calling a cycle” on page 204) n The feed-rate unit for M136 was changed from µm/rev to mm/rev.

(see “Feed rate in millimeters per spindle revolution: M136” on page 184)

n The size of the contour memory for SL cycles was doubled. (see “SL

cycles” on page 285)

n M91 and M92 are now also possible with tilted working plane. (see

“Positioning in a tilted coordinate system” on page 332)

n Display of the NC program during the execution of pallet tables (see

“Program Run, Full Sequence and Program Run, Single Block” on page 8) and (see “Screen layout for executing pallet tables” on page

83)

New/changed descriptions in this manual.

n TNCremoNT (see “Data transfer between the TNC and

TNCremoNT” on page 425)

n FK Free Contour Programming (see “Path Contours—FK Free

Contour Programming” on page 158) Summary of input formats

465)

n Mid-program startup of pallet tables (see “Mid-program startup

(block scan)” on page 412)

n Exchanging the buffer battery (see “Exchanging the Buffer Battery”

on page 469)

(see “Technical Information” on page

HEIDENHAIN TNC 426, TNC 430 III

Contents

Introduction

Manual Operation and Setup

Positioning with Manual Data Input (MDI)

Programming: Fundamentals of File Management, Programming Aids

Programming: Tools

Programming: Programming Contours

Programming: Miscellaneous Functions

Programming: Cycles

Programming: Subprograms and Program Section Repeats

Programming: Q Parameters

Test Run and Program Run

MOD Functions

2 3 4 5 6 7 8 9

Tables and Overviews

HEIDENHAIN TNC 426, TNC 430 V

1 Introduction ..... 1

1.1 The TNC 426, the TNC 430 ..... 2

Programming: HEIDENHAIN conversational and ISO formats ..... 2

Compatibility ..... 2

1.2 Visual Display Unit and Keyboard ..... 3

Visual display unit ..... 3

Screen layout ..... 4

Keyboard ..... 5

1.3 Modes of Operation ..... 6

Manual Operation and Electronic Handwheel ..... 6

Positioning with manual data input (MDI) ..... 6

Programming and Editing ..... 7

Test run ..... 7

Program Run, Full Sequence and Program Run, Single Block ..... 8

1.4 Status Displays ..... 9

“General” status display ..... 9

Additional status displays ..... 10

1.5 Accessories: HEIDENHAIN 3-D Touch Probes and Electronic Handwheels ..... 13

3-D Touch Probes ..... 13

HR electronic handwheels ..... 14

2 Manual Operation and Setup ..... 15

2.1 Switch-on, Switch-off ..... 16

Switch-on ..... 16

Switch-off ..... 17

2.2 Moving the Machine Axes ..... 18

Note ..... 18

To traverse with the machine axis direction buttons: ..... 18

Traversing with the HR 410 electronic handwheel ..... 19

Incremental jog positioning ..... 20

2.3 Spindle Speed S, Feed Rate F and Miscellaneous Functions M ..... 21

Function ..... 21

Entering values ..... 21

Changing the spindle speed and feed rate ..... 21

2.4 Datum Setting(Without a 3-D Touch Probe) ..... 22

Note ..... 22

Preparation ..... 22

Datum setting ..... 23

HEIDENHAIN TNC 426, TNC 430 VII

2.5 Tilting the working plane ..... 24

Application, function ..... 24

Traversing the reference points in tilted axes ..... 25

Setting the datum in a tilted coordinate system ..... 25

Datum setting on machines with rotary tables ..... 26

Position display in a tilted system ..... 26

Limitations on working with the tilting function ..... 26

To activate manual tilting: ..... 27

3 Positioning with Manual Data Input (MDI) ..... 29

3.1 Programming and Executing Simple Machining Operations ..... 30

Positioning with manual data input (MDI) ..... 30

Protecting and erasing programs in $MDI ..... 32

4 Programming:Fundamentals of NC, File Management, Programming Aids,

Pallet Management ..... 33

4.1 Fundamentals ..... 34

Position encoders and reference marks ..... 34

Reference system ..... 34

Reference system on milling machines ..... 35

Polar coordinates ..... 36

Absolute and incremental workpiece positions ..... 37

Setting the datum ..... 38

4.2 File Management: Fundamentals ..... 39

Files ..... 39

Data security ..... 40

4.3 Standard File Management ..... 41

Note ..... 41

Calling the file manager ..... 41

Selecting a file ..... 42

Deleting a file ..... 42

Copying a file ..... 43

Data transfer to or from an external data medium ..... 44

Selecting one of the last 10 files selected ..... 46

Renaming a file ..... 46

Converting an FK program into HEIDENHAIN conversational format ..... 47

Protect file / Cancel file protection ..... 48

VIII

4.4 Advanced File Management ..... 49

Note ..... 49

Directories ..... 49

Paths ..... 49

Overview: Functions of the expanded file manager ..... 50

Calling the file manager ..... 51

Selecting drives, directories and files ..... 52

Creating a new directory (only possible on the drive TNC:\) ..... 53

Copying a single file ..... 54

Copying a directory ..... 55

Choosing one of the last 10 files selected ..... 55

Deleting a file ..... 56

Deleting a directory ..... 56

Tagging files ..... 57

Renaming a file ..... 58

Additional Functions ..... 58

Data transfer to or from an external data medium ..... 59

Copying files into another directory ..... 60

The TNC in a network (applies only for Ethernet interface option) ..... 61

4.5 Creating and Writing Programs ..... 63

Organization of an NC program in HEIDENHAIN conversational format. ..... 63

Defining the blank form–BLK FORM ..... 63

Creating a new part program ..... 64

Programming tool movements in conversational format ..... 66

Editing a program ..... 67

4.6 Interactive Programming Graphics ..... 70

To generate/not generate graphics during programming: ..... 70

Generating a graphic for an existing program ..... 70

Block number display ON/OFF ..... 71

To erase the graphic: ..... 71

Magnifying or reducing a detail ..... 71

4.7 Structuring Programs ..... 72

Definition and applications ..... 72

To display the program structure window / change the active window: ..... 72

To insert a structuring block in the (left) program window ..... 72

To insert a structuring block in the (right) structure window ..... 72

Selecting blocks in the program structure window ..... 72

HEIDENHAIN TNC 426, TNC 430 IX

4.8 Adding Comments ..... 73

Function ..... 73

Entering comments during programming ..... 73

Inserting comments after program entry ..... 73

Entering a comment in a separate block ..... 73

4.9 Creating Text Files ..... 74

Function ..... 74

Opening and exiting text files ..... 74

Editing texts ..... 75

Erasing and inserting characters, words and lines ..... 76

Editing text blocks ..... 76

Finding text sections ..... 77

4.10 Integrated Pocket Calculator ..... 78

Operation ..... 78

4.11 Immediate Help for NC Error Messages ..... 79

Displaying error messages ..... 79

Display HELP ..... 79

4.12 Pallet Management ..... 80

Application ..... 80

Selecting a pallet table ..... 82

To leave the pallet file: ..... 82

Executing the pallet file ..... 82

4.13 Pallet Operation with Tool-Oriented Machining ..... 84

Application ..... 84

Selecting a pallet file ..... 89

Setting up the pallet file with the entry form ..... 89

Sequence of tool-oriented machining ..... 93

To leave the pallet file: ..... 94

Executing the pallet file ..... 94

5 Programming: Tools ..... 97

5.1 Entering Tool-Related Data ..... 98

Feed rate F ..... 98

Spindle speed S ..... 98

5.2 Tool Data ..... 99

Requirements for tool compensation ..... 99

Tool numbers and tool names ..... 99

Tool length L ..... 99

Tool radius R ..... 100

Delta values for lengths and radii ..... 100

Entering tool data into the program ..... 100

Entering tool data in tables ..... 101

Pocket table for tool changer ..... 106

Calling tool data ..... 107

Tool change ..... 108

5.3 Tool Compensation ..... 110

Introduction ..... 110

Tool length compensation ..... 110

Tool radius compensation ..... 111

5.4 Three-Dimensional Tool Compensation ..... 114

Introduction ..... 114

Definition of a normalized vector ..... 115

Permissible tool forms ..... 115

Using other tools: Delta values ..... 116

3-D compensation without tool orientation ..... 116

Face Milling: 3-D compensation with and without tool orientation ..... 116

Peripheral milling: 3-D radius compensation with workpiece orientation ..... 118

5.5 Working with Cutting Data Tables ..... 120

Note ..... 120

Applications ..... 120

Table for workpiece materials ..... 121

Table for tool cutting materials ..... 122

Table for cutting data ..... 122

Data required for the tool table ..... 123

Working with automatic speed/feed rate calculation ..... 124

Changing the table structure ..... 124

Data transfer from cutting data tables ..... 126

Configuration file TNC.SYS ..... 126

HEIDENHAIN TNC 426, TNC 430 XI

6 Programming: Programming Contours ..... 127

6.1 Tool movements ..... 128

Path functions ..... 128

FK Free Contour Programming ..... 128

Miscellaneous functions M ..... 128

Subprograms and Program Section Repeats ..... 128

Programming with Q parameters ..... 128

6.2 Fundamentals of Path Functions ..... 129

Programming tool movements for workpiece machining ..... 129

6.3 Contour Approach and Departure ..... 133

Overview: Types of paths for contour approach and departure ..... 133

Important positions for approach and departure ..... 133

Approaching on a straight line with tangential connection: APPR LT ..... 135

Approaching on a straight line perpendicular to the first contour point: APPR LN ..... 135

Approaching on a circular path with tangential connection: APPR CT ..... 136

Approaching on a circular arc with tangential connection from a straight line to the contour: APPR LCT ..... 136

Departing on a straight line with tangential connection: DEP LT ..... 137

Departing on a straight line perpendicular to the last contour point: DEP LN ..... 137

Departure on a circular path with tangential connection: DEP CT ..... 138

Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT ..... 138

6.4 Path Contours — Cartesian Coordinates ..... 139

Overview of path functions ..... 139

Straight line L ..... 140

Inserting a chamfer CHF between two straight lines ..... 141

Corner rounding RND ..... 142

Circle center CC ..... 143

Circular path C around circle center CC ..... 144

Circular path CR with defined radius ..... 145

Circular path CT with tangential connection ..... 146

XII

6.5 Path Contours — Polar Coordinates ..... 151

Overview ..... 151

Polar coordinate origin: Pole CC ..... 151

Straight line LP ..... 152

Circular path CP around pole CC ..... 152

Circular path CTP with tangential connection ..... 153

Helical interpolation ..... 153

6.6 Path Contours—FK Free Contour Programming ..... 158

Fundamentals ..... 158

Graphics during FK programming ..... 159

Initiating the FK dialog ..... 160

Free programming of straight lines ..... 160

Free programming of circular arcs ..... 161

Input possibilities ..... 162

Auxiliary points ..... 164

Relative data ..... 165

Converting FK programs ..... 167

6.7 Path Contours — Spline Interpolation ..... 173

Function ..... 173

HEIDENHAIN TNC 426, TNC 430 XIII

7 Programming: Miscellaneous functions ..... 175

7.1 Entering Miscellaneous Functions M and STOP ..... 176

Fundamentals ..... 176

7.2 Miscellaneous Functions for Program Run Control, Spindle and Coolant ..... 177

Overview ..... 177

7.3 Miscellaneous Functions for Coordinate Data ..... 178

Programming machine-referenced coordinates: M91/M92 ..... 178

Activating the most recently entered datum: M104 ..... 180

Moving to position in an non-tilted coordinate system with a tilted working plane: M130 ..... 180

7.4 Miscellaneous Functions for Contouring Behavior ..... 181

Smoothing corners: M90 ..... 181

Insert rounding arc between straight lines: M112 ..... 182

Machining small contour steps: M97 ..... 182

Machining open contours: M98 ..... 183

Feed rate factor for plunging movements: M103 ..... 183

Feed rate in millimeters per spindle revolution: M136 ..... 184

Feed rate at circular arcs: M109/M110/M111 ..... 185

Calculating the radius-compensated path in advance (LOOK AHEAD): M120 ..... 185

Superimposing handwheel positioning during program run: M118 ..... 187

Retraction from the contour in the tool-axis direction: M140 ..... 188

Suppressing touch probe monitoring: M141 ..... 189

Delete modal program information: M142 ..... 190

Delete basic rotation: M143 ..... 190

7.5 Miscellaneous Functions for Rotary Axes ..... 191

Feed rate in mm/min on rotary axes A, B, C: M116 ..... 191

Shorter-path traverse of rotary axes: M126 ..... 191

Reducing display of a rotary axis to a value less than 360°: M94 ..... 192

Automatic compensation of machine geometry when working with tilted axes: M114 ..... 193

Maintaining the position of the tool tip when positioning with tilted axes (TCPM*): M128 ..... 194

Exact stop at corners with nontangential transitions: M134 ..... 196

Selecting tilting axes: M138 ..... 196

Compensating the machine’s kinematic configuration for ACTUAL/NOMINAL

positions at end of block: M144 ..... 197

7.6 Miscellaneous Functions for Laser Cutting Machines ..... 198

Principle ..... 198

Output the programmed voltage directly: M200 ..... 198

Output voltage as a function of distance: M201 ..... 198

Output voltage as a function of speed: M202 ..... 199

Output voltage as a function of time (time-dependent ramp): M203 ..... 199

Output voltage as a function of time (time-dependent pulse): M204 ..... 199

XIV

8 Programming: Cycles ..... 201

8.1 Working with Cycles ..... 202

Defining a cycle using soft keys ..... 202

Defining a cycle using the GOTO function ..... 202

Calling a cycle ..... 204

Working with the secondary axes U/V/W ..... 205

8.2 Point Tables ..... 206

Function ..... 206

Creating a point table ..... 206

Selecting a point table in the program. ..... 207

Calling a cycle in connection with point tables ..... 208

8.3 Cycles for Drilling, Tapping and Thread Milling ..... 209

Overview ..... 209

PECKING (Cycle 1) ..... 211

DRILLING (Cycle 200) ..... 212

REAMING (Cycle 201) ..... 214

BORING (Cycle 202) ..... 216

UNIVERSAL DRILLING (Cycle 203) ..... 218

BACK BORING (Cycle 204) ..... 220

UNIVERSAL PECKING (Cycle 205) ..... 222

BORE MILLING (Cycle 208) ..... 224

TAPPING with a floating tap holder (Cycle 2) ..... 226

TAPPING NEW with floating tap holder (Cycle 206) ..... 227

RIGID TAPPING (Cycle 17) ..... 229

RIGID TAPPING without a floating tap holder TAPPING (Cycle 207) ..... 230

THREAD CUTTING (Cycle 18) ..... 232

TAPPING WITH CHIP BREAKING (Cycle 209) ..... 233

Fundamentals of thread milling ..... 235

THREAD MILLING (Cycle 262) ..... 237

THREAD MILLING/COUNTERSINKING (Cycle 263) ..... 239

THREAD DRILLING/MILLING (Cycle 264) ..... 243

HELICAL THREAD DRILLING/MILLING (Cycle 265) ..... 246

OUTSIDE THREAD MILLING (Cycle 267) ..... 249

8.4 Cycles for milling pockets, studs and slots ..... 257

Overview ..... 257

POCKET MILLING (Cycle 4) ..... 258

POCKET FINISHING (Cycle 212) ..... 260

STUD FINISHING (Cycle 213) ..... 262

CIRCULAR POCKET MILLING (Cycle 5) ..... 264

CIRCULAR POCKET FINISHING (Cycle 214) ..... 266

CIRCULAR STUD FINISHING (Cycle 215) ..... 268

SLOT MILLING (Cycle 3) ..... 270

SLOT (oblong hole) with reciprocating plunge-cut (Cycle 210) ..... 272

CIRCULAR SLOT (oblong hole) with reciprocating plunge-cut (Cycle 211) ..... 274

HEIDENHAIN TNC 426, TNC 430 XV

8.5 Cycles for Machining Hole Patterns ..... 278

Overview ..... 278

CIRCULAR PATTERN (Cycle 220) ..... 279

LINEAR PATTERN (Cycle 221) ..... 281

8.6 SL cycles ..... 285

Fundamentals ..... 285

Overview of SL cycles ..... 286

CONTOUR GEOMETRY (Cycle 14) ..... 287

Overlapping contours ..... 287

CONTOUR DATA (Cycle 20) ..... 290

REAMING (Cycle 21) ..... 291

ROUGH-OUT (Cycle 22) ..... 292

FLOOR FINISHING (Cycle 23) ..... 293

SIDE FINISHING (Cycle 24) ..... 294

CONTOUR TRAIN (Cycle 25) ..... 295

CYLINDER SURFACE (Cycle 27) ..... 297

CYLINDER SURFACE slot milling (Cycle 28) ..... 299

8.7 Cycles for multipass milling ..... 310

Overview ..... 310

RUN DIGITIZED DATA (Cycle 30) ..... 311

MULTIPASS MILLING (Cycle 230) ..... 312

RULED SURFACE (Cycle 231) ..... 314

8.8 Coordinate Transformation Cycles ..... 319

Overview ..... 319

Effect of coordinate transformations ..... 319

DATUM SHIFT (Cycle 7) ..... 320

DATUM SHIFT with datum tables (Cycle 7) ..... 321

DATUM SETTING (Cycle 247) ..... 324

MIRROR IMAGE (Cycle 8) ..... 325

ROTATION (Cycle 10) ..... 327

SCALING FACTOR (Cycle 11) ..... 328

AXIS-SPECIFIC SCALING (Cycle 26) ..... 329

WORKING PLANE (Cycle 19) ..... 330

8.9 Special Cycles ..... 337

DWELL TIME (Cycle 9) ..... 337

PROGRAM CALL (Cycle 12) ..... 337

ORIENTED SPINDLE STOP (Cycle 13) ..... 338

TOLERANCE (Cycle 32) ..... 339

XVI

9 Programming: Subprograms and Program Section Repeats ..... 341

9.1 Labeling Subprograms and Program Section Repeats ..... 342

Labels ..... 342

9.2 Subprograms ..... 343

Operating sequence ..... 343

Programming notes ..... 343

Programming a subprogram ..... 343

Calling a subprogram ..... 343

9.3 Program Section Repeats ..... 344

Label LBL ..... 344

Operating sequence ..... 344

Programming notes ..... 344

Programming a program section repeat ..... 344

Calling a program section repeat ..... 344

9.4 Separate Program as Subprogram ..... 345

Operating sequence ..... 345

Programming notes ..... 345

Calling any program as a subprogram ..... 345

9.5 Nesting ..... 346

Types of nesting ..... 346

Nesting depth ..... 346

Subprogram within a subprogram ..... 346

Repeating program section repeats ..... 347

Repeating a subprogram ..... 348

HEIDENHAIN TNC 426, TNC 430 XVII

10 Programming: Q Parameters ..... 355

10.1 Principle and Overview ..... 356

Programming notes ..... 356

Calling Q parameter functions ..... 357

10.2 Part Families – Q Parameters in Place of Numerical Values ..... 358

Example NC blocks ..... 358

Example ..... 358

10.3 Describing Contours through Mathematical Operations ..... 359

Function ..... 359

Overview ..... 359

Programming fundamental operations ..... 360

10.4 Trigonometric Functions ..... 361

Definitions ..... 361

Programming trigonometric functions ..... 362

10.5 Calculating Circles ..... 363

Function ..... 363

10.6 If-Then Decisions with Q Parameters ..... 364

Function ..... 364

Unconditional jumps ..... 364

Programming If-Then decisions ..... 364

Abbreviations used: ..... 365

10.7 Checking and changing Q parameters ..... 366

Procedure ..... 366

10.8 Additional Functions ..... 367

Overview ..... 367

FN14: ERROR: Displaying error messages ..... 368

FN15: PRINT: Output of texts or Q parameter values ..... 370

FN16: F-PRINT: Formatted output of texts or Q parameter values ..... 371

FN18:SYS-DATUM READ Read system data ..... 373

FN19: PLC: Transferring values to the PLC ..... 379

FN20: WAIT FOR NC and PLC synchronization ..... 379

FN 25: PRESET: Setting a new datum ..... 380

FN26: TABOPEN: Opening a Freely Definable Table ..... 381

FN27: TABWRITE: writing to a freely definable table ..... 381

FN28: TABREAD: Reading a Freely Definable Table ..... 382

10.9 Entering Formulas Directly ..... 383

Entering formulas ..... 383

Rules for formulas ..... 384

Programming example ..... 385

XVIII

10.10 Preassigned Q Parameters ..... 386

Values from the PLC: Q100 to Q107 ..... 386

Active tool radius: Q108 ..... 386

Tool axis: Q109 ..... 386

Spindle status: Q110 ..... 386

Coolant on/off: Q111 ..... 387

Overlap factor: Q112 ..... 387

Unit of measurement for dimensions in the program: Q113 ..... 387

Tool length: Q114 ..... 387

Coordinates after probing during program run ..... 387

Deviation between actual value and nominal value during automatic tool measurement with the TT 130 ..... 388

Tilting the working plane with mathematical angles: Rotary axis coordinates calculated by the TNC ..... 388

Results of measurements with touch probe cycles (see also Touch Probe Cycles User's Manual) ..... 389

11 Test run and Program Run ..... 399

11.1 Graphics ..... 400

Function ..... 400

Overview of display modes ..... 400

Plan view ..... 401

Projection in 3 planes ..... 401

3-D view ..... 402

Magnifying details ..... 402

Repeating graphic simulation ..... 404

Measuring the machining time ..... 404

11.2 Functions for Program Display ..... 405

Overview ..... 405

11.3 Test run ..... 406

Function ..... 406

11.4 Program run ..... 408

Application ..... 408

Running a part program ..... 408

Interrupting machining ..... 409

Moving the machine axes during an interruption ..... 410

Resuming program run after an interruption ..... 411

Mid-program startup (block scan) ..... 412

Returning to the contour ..... 413

11.5 Automatic Program Start ..... 414

Function ..... 414

11.6 Optional Block Skip ..... 415

Function ..... 415

11.7 Optional Program Run Interruption ..... 416

Function ..... 416

HEIDENHAIN TNC 426, TNC 430 XIX

12 MOD Functions ..... 417

12.1 MOD functions ..... 418

Selecting the MOD functions ..... 418

Changing the settings ..... 418

Exiting the MOD functions ..... 418

Overview of MOD functions ..... 418

12.2 Software Numbers and Option Numbers ..... 420

Function ..... 420

12.3 Code Number ..... 421

Function ..... 421

12.4 Setting the Data Interfaces ..... 422

Function ..... 422

Setting the RS-232 interface ..... 422

Setting the RS-422 interface ..... 422

Setting the OPERATING MODE of the external device ..... 422

Setting the BAUD RATE ..... 422

Assign ..... 423

Software for data transfer ..... 424

12.5 Ethernet Interface ..... 427

Introduction ..... 427

Installing an Ethernet card ..... 427

Connection possibilities ..... 427

Configuring the TNC ..... 428

12.6 Configuring PGM MGT ..... 433

Function ..... 433

Changing the setting ..... 433

12.7 Machine-Specific User Parameters ..... 434

Function ..... 434

12.8 Showing the workpiece in the working space ..... 435

Function ..... 435

12.9 Position Display Types ..... 437

Function ..... 437

12.10 Select the unit of measurement ..... 438

Function ..... 438

12.11 Select the programming Language for $MDI ..... 439

Function ..... 439

12.12 Selecting the Axes for Generating L Blocks ..... 440

Function ..... 440

12.13 Enter the axis traverse limits, datum display ..... 441

Function ..... 441

Working without additional traverse limits ..... 441

To find and enter the maximum traverse: ..... 441

Datum display ..... 441

12.14 Displaying HELP Files ..... 442

Function ..... 442

Selecting HELP files ..... 442

12.15 Displaying Operating Time ..... 443

Function ..... 443

12.16 Teleservice ..... 444

Function ..... 444

Calling/Exiting Teleservice ..... 444

12.17 External Access ..... 445

Function ..... 445

13 Tables and Overviews ..... 447

13.1 General User Parameters ..... 448

Input possibilities for machine parameters ..... 448

Selecting general user parameters ..... 448

13.2 Pin Layout and Connecting Cable for the Data Interfaces ..... 461

RS-232-C/V.24 Interface

HEIDEHAIN devices ..... 461

Non-HEIDENHAIN devices ..... 462

RS-422/V.11 Interface ..... 463

Ethernet interface RJ45 socket (option) ..... 464

Ethernet interface BNC socket (option) ..... 464

13.3 Technical Information ..... 465

13.4 Exchanging the Buffer Battery ..... 469

TNC 426 CB/PB, TNC 430 CA/PA ..... 469

TNC 426 M, TNC 430 M ..... 469

HEIDENHAIN TNC 426, TNC 430 XXI

Introduction

1.1 The TNC 426, the TNC 430

HEIDENHAIN TNC controls are workshop-oriented contouring controls that enable you to program conventional machining operations right at the machine in an easy-to-use conversational programming language. They are designed for milling, drilling and boring machines, as well as for machining centers. The TNC 426 can control up to 5 axes; the TNC 430 can control up to 9 axes. You can also change the angular position of the spindle under program control.

An integrated hard disk provides storage for as many programs as you like, even if they were created off-line or by digitizing. For quick calculations you can call up the on-screen pocket calculator at any time.

Keyboard and screen layout are clearly arranged in a such way that the functions are fast and easy to use.

Programming: HEIDENHAIN conversational and ISO formats

1.1 The TNC 426, the TNC 430

HEIDENHAIN conversational programming is an especially easy method of writing programs. Interactive graphics illustrate the individual machining steps for programming the contour. If a production drawing is not dimensioned for NC, the HEIDENHAIN FK free contour programming carries out the necessary calculations automatically. Workpiece machining can be graphically simulated either during or before actual machining. It is also possible to program in ISO format or DNC mode.

You can also enter and test one program while the TNC is running another.

Compatibility

The TNC can execute all part programs that were written on HEIDENHAIN controls TNC 150 B and later.

2 1 Introduction

1.2 Visual Display Unit and Keyboard

Visual display unit

The TNC is available with either a color CRT screen (BC 120) or a TFT flat panel display (BF 120. The figure at top right shows the keys and controls on the BC 120, and the figure at center right shows those of the BF 120.

1 Header

When the TNC is on, the selected operating modes are shown in the screen header: the machining mode at the left and the programming mode at right. The currently active mode is displayed in the larger box, where the dialog prompts and TNC messages also appear (unless the TNC is showing only graphics).

2 Soft keys

In the footer the TNC indicates additional functions in a soft-key row. You can select these functions by pressing the keys immediately below them. The lines immediately above the softkey row indicate the number of soft-key rows that can be called with the black arrow keys to the right and left. The line representing the active soft-key row is highlighted.

3 Soft key selector keys 4 Switching the soft-key rows 5 Setting the screen layout 6 Shift key for switchover between machining and programming

modes

1.2 Visual Display Unit and Keyboard

Keys on BC 120 only

7 Screen demagnetization; Exit main menu for screen settings 8 Select main menu for screen settings:

n In the main menu: Move highlight downward n In the submenu: Reduce value or move picture to the left or

downward

9 n In the main menu: Move highlight upward

n In the submenu: Increase value or move picture to the right or

upward

10 n In the main menu: Select submenu

n In the submenu: Exit submenu

Main menu dialog Function

BRIGHTNESS Adjust brightness

CONTRAST Adjust contrast

H-POSITION Adjust horizontal position

HEIDENHAIN TNC 426, TNC 430 3

Main menu dialog Function

V-POSITION Adjust vertical position

V-SIZE Adjust picture height

SIDE-PIN Correct barrel-shaped distortion

TRAPEZOID Correct trapezoidal distortion

ROTATION Correct tilting

COLOR TEMP Adjust color temperature

R-GAIN Adjust strength of red color

B-GAIN Adjust strength of blue color

RECALL No function

The BC 120 is sensitive to magnetic and electromagnetic noise, which can distort the position and geometry of the picture. Alternating fields can cause the picture to shift periodically or to become distorted.

Screen layout

You select the screen layout yourself: In the PROGRAMMING AND

1.2 Visual Display Unit and Keyboard

EDITING mode of operation, for example, you can have the TNC show program blocks in the left window while the right window displays programming graphics. You could also display the program structure in the right window instead, or display only program blocks in one large window. The available screen windows depend on the selected operating mode.

To change the screen layout:

Press the SPLIT SCREEN key: The soft-key row shows the available layout options (see “Modes of Operation,” page 6).

Select the desired screen layout.

4 1 Introduction

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