HEIDENHAIN TNC 426 B Bedienungsanleitung

User's Manual

HEIDENHAIN

Conversational

Programming

7/99

TNC 426 B

TNC 430

NC Software

280 472 xx

280 473 xx

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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

W E RT

File name

Comments

F S T M

ISO programs

Machine operating modes

MANUAL OPERATION

ELECTRONIC HANDWHEEL Operating Modes

POSITIONING WITH MANUAL DATA INPUT

(MDI)

PROGRAM RUN, SINGLE BLOCK

PROGRAM RUN, FULL SEQUENCE

Programming modes

PROGRAMMING AND EDITING

TEST RUN

Program/file management,TNC functions

PGM

MGT

Select or delete programs and files

External data transfer

PGM

CALL Enter program call in a program

MOD

MOD functions

HELP

Displaying help texts for NC error messages

CALC

Pocket calculator

Moving the cursor, going directly to blocks, cycles

and parameter functions

Move highlight

GOTO

Go directly to blocks, cycles and parameter

functions

Override control knobs for feed rate/spindle speed

Programming path movements

APPR

DEP

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

CHF

Chamfer

RND

Corner rounding

Tool functions

TOOL

DEF

TOOL

CALL Enter or call tool length and radius

Cycles, subprograms and program section

repeats

CYCL

DEF

CYCL

CALL Define and call cycles

LBL

SET

LBL

CALL

Enter and call labels for

subprogramming and program

section repeats

STOP

Program stop in a program

TOUCH

PROBE Enter touch probe functions in a program

Coordinate axes and numbers, editing

... VSelect coordinate axes or enter

them in a program

...

Numbers

Decimal point

Change arithmetic sign

Polar coordinates

Incremental dimensions

Q parameters

Capture actual position

ENT

Skip dialog questions, delete words

ENT

Confirm entry and resume

dialog

END

End block

Clear numerical entry or TNC error

message

DEL

Abort dialog, delete program section

Controls on the TNC

100

S %

100

F %

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Contents

IHEIDENHAIN TNC 426 B, TNC 430

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 280 472 xx

TNC 426 CF, TNC 426 PF 280 473 xx

TNC 430 CA, TNC 430 PA 280 472 xx

TNC 430 CE, TNC 430 PE 280 473 xx

The suffixes E and F indicate the export versions of the TNC

which have the following limitations:

■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:

■Probing function for the 3-D touch probe

■Digitizing option

■Tool measurement with the TT 120

■Rigid tapping

■Returning to the contour after an interruption

Please contact your machine tool builder to become familiar

with the individual implementation of the control on 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.

User's Manual -Touch Probe Cycles

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. Nr.: 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.

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Contents

IIIHEIDENHAIN TNC 426 B, TNC 430

Introduction

Manual Operation and Setup

Programming:Tools

Contents

Programming: Fundamentals of NC,

File Management, ProgrammingAids

Positioning with Manual Data Input (MDI)

Programming: Programming Contours

Programming: Miscellaneous Functions

Programming: Cycles

Programming: Subprograms and

Program Section Repeats

Programming: Q Parameters

Test Run and Program Run

MOD Functions

Tables and Overviews

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Contents

1 INTRODUCTION ..... 1

1.1TheTNC 426 B, theTNC 430 ..... 2

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

1.3 Modes of Operation ..... 5

1.4 Status Displays ..... 7

1.5 Accessories: HEIDENHAIN 3-DTouch Probes and Electronic Handwheels ..... 11

2 MANUAL OPERATION AND SETUP ..... 13

2.1 Switch-on, Switch-off ..... 14

2.2 Moving the MachineAxes ..... 15

2.3 Spindle Speed S, Feed Rate F and Miscellaneous Functions M ..... 17

2.4 Datum Setting (Without a 3-DTouch Probe) ..... 18

2.5 Tilting theWorking Plane ..... 19

3 POSITIONING WITH MANUAL DATA INPUT (MDI) ..... 23

3.1 Programming and Executing Simple Machining Operations ..... 24

4 PROGRAMMING: FUNDAMENTALS OF NC, FILE MANAGEMENT,

PROGRAMMING AIDS, PALLET MANAGEMENT ..... 27

4.1 Fundamentals of NC ..... 28

4.2 File Management: Fundamentals ..... 33

4.3 Standard File Management ..... 34

4.4 File Management withAdditional Functions ..... 40

4.5 Creating andWriting Programs ..... 53

4.6 Interactive Programming Graphics ..... 57

4.7 Structuring Programs ..... 58

4.8 Adding Comments ..... 59

4.9 CreatingText Files ..... 60

4.10 Integrated Pocket Calculator ..... 63

4.11 HELP for NC error messages ..... 64

4.12 Managing PalletTables ..... 65

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Contents

VHEIDENHAIN TNC 426 B, TNC 430

5 PROGRAMMING: TOOLS ..... 67

5.1 EnteringTool-Related Data ..... 68

5.2 Tool Data ..... 69

5.3 Tool Compensation ..... 78

5.4 Three-DimensionalTool Compensation ..... 82

5.5 Working with Cutting DataTables ..... 84

6 PROGRAMMING: PROGRAMMING CONTOURS ..... 91

6.1 Overview ofTool Movements ..... 92

6.2 Fundamentals of Path Functions ..... 93

6.3 ContourApproach and Departure ..... 96

Overview:Types of paths for contour approach and departure ..... 96

Important positions for approach and departure ..... 96

Approaching on a straight line with tangential connection:APPR LT ..... 97

Approaching on a straight line perpendicular to the first contour point:APPR LN ..... 98

Approaching on a circular arc with tangential connection:APPR CT ..... 98

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

APPR LCT ..... 99

Departing tangentially on a straight line: DEP LT ..... 100

Departing on a straight line perpendicular to the last contour point: DEP LN ..... 100

Departing tangentially on a circular arc: DEP CT ..... 101

Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT ..... 101

6.4 Path Contours — Cartesian Coordinates ..... 102

Overview of path functions ..... 102

Straight line L ..... 103

Inserting a chamfer CHF between two straight lines ..... 103

Circle center CC ..... 104

Circular path C around circle center CC ..... 105

Circular path CR with defined radius ..... 106

Circular path CT with tangential connection ..... 107

Corner Rounding RND ..... 108

Example: Linear movements and chamfers with Cartesian coordinates ..... 109

Example: Circular movements with Cartesian coordinates ..... 110

Example: Full circle with Cartesian coordinates ..... 111

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Contents

6.5 Path Contours—Polar Coordinates ..... 112

Polar coordinate origin: Pole CC ..... 112

Straight line LP ..... 113

Circular path CP around pole CC ..... 113

Circular path CTP with tangential connection ..... 114

Helical interpolation ..... 114

Example: Linear movement with polar coordinates ..... 116

Example: Helix ..... 117

6.6 Path Contours — FK Free Contour Programming ..... 118

Fundamentals ..... 118

Graphics during FK programming ..... 118

Initiating the FK dialog ..... 119

Free programming of straight lines ..... 120

Free programming of circular arcs ..... 120

Auxiliary points ..... 122

Relative data ..... 123

Closed contours ..... 125

Converting FK programs ..... 125

Example: FK programming 1 ..... 126

Example: FK programming 2 ..... 127

Example: FK programming 3 ..... 128

6.7 Path Contours - Spline Interpolation ..... 130

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