HEIDENHAIN TNC 425 Manuale utente

Controls on the visual display unit

Toggle display between machining and

programming modes

Switch-over key for displaying graphics only,

program blocks only, or both program blocks

and graphics

Soft keys for selecting function in screen

Shift keys for soft keys

Brightness, Contrast

Typewriter keyboard for entering letters and symbols

File names/

comments

ISO programs

Machine operating modes

MANUAL OPERATION

EL. HANDWHEEL

POSITIONING WITH MDI

PROGRAM RUN/SINGLE BLOCK

PROGRAM RUN/FULL SEQUENCE

Programming modes

PROGRAMMING AND EDITING

TEST RUN

Program/file management

Select programs and files

Delete programs and files

Enter program call in a program

Activate external data transfer

Select miscellaneous functions

Moving the cursor and for going directly

to blocks, cycles and parameter functions

Move cursor (highlight)

Go directly to blocks, cycles and

parameter functions

Override control knobs

Feed rate Spindle speed

Controls on the TNC 407, TNC 415

B and TNC 425

Programming path movements

Approach/depart contour

Straight line

Circle center/pole for polar coordinates

Circle with center point

Circle with radius

Tangential circle

Chamfer

Corner rounding

Tool functions

Enter or call tool length and radius

Activate tool radius compensation

Cycles, subprograms and program section repeats

Define and call cycles

Enter and call labels for subprogramming and

program section repeats

Enter program stop in a program

Enter touch probe functions in a program

Coordinate axes and numbers, editing

Select coordinate axes or

enter them into program

Numbers

Decimal point

Arithmetic sign

Polar coordinates

Incremental dimensions

Q parameters for part families or

in mathematical functions

Capture actual position

Skip dialog questions, delete words

Confirm entry and resume dialog

End block

Clear numerical entry or TNC message

Abort dialog; delete program sections

GRAPHICS

TEXT

SPLIT

SCREEN

QRYW E T

ENT

CYCL

CALL

LBL

SET LBL

CALL

STOP

TOUCH

PROBE

CYCL

DEF

R+

TOOL

CALL

TOOL

DEF

CHF

RND

APPR

DEP

R-

G F S T M

ENT

END

DEL

GOTO

PGM

CALL

EXT

MOD

PGM

NAME

PGM

...

100

S %

100

F %

Preparation

1 Select tools —— ——

2 Set workpiece datum for

coordinate system —— ——

3 Determine spindle speeds

and feed rates —— 12.4

4 Switch on machine —— 1.3

5 Cross over reference marks or 1.3, 2.1

6 Clamp workpiece —— ——

7 Set datum /

Reset position display...

7a ... with

3D Touch Probe or 9.2

7b ... without

3D Touch Probe or 2.3

Entering and testing part programs

8 Enter part program or download 5 to 8

over external data interface or or 10

9 Test part program for errors 3.1

10 Test run: Run program block by

block without tool 3.2

11 If necessary: Optimize part

program 5 to 8

Machining the workpiece

12 Insert tool and run

part program 3.2

TNC Guideline:

From workpiece drawing to

program-controlled machining

Step Task TNC Section in

operating mode manual

EXT

TNC 425/TNC 415 B/TNC 4071-2

1 Introduction

1.1 The TNC 425, TNC 415 B and TNC 407

The TNCs are shop-floor programmable contouring controls for boring

machines, milling machines and machining centers with up to 5 axes. It

also features oriented spindle stop.

In the TNC, one operating mode for machine movement (machining

modes) and one for programming or program testing (programming

modes) are always simultaneously active.

The TNC 425

This control features digital control of machine axis speed. The TNC 425

provides high geometrical accuracy, even with complex workpiece

surfaces and at high speeds.

The TNC 415 B

The TNC 415 B uses an analog method of speed control in the drive

amplifier. All the programming and machining functions of the TNC 425

are also available on the TNC 415 B.

The TNC 407

The TNC 407 uses an analog method of speed control in the drive

amplifier. Most programming and machining functions of the TNC 425 are

also available on the TNC 407, with the following exceptions:

• Graphics during program run

• Tilting the machining plane

• Three-dimensional radius compensation

• Linear movement in more than three axes

Technical differences between TNCs

TNC 425 TNC 415 B TNC 407

Speed control Digital Analog Analog

Block processing time 4 ms 4 ms 24 ms

Control loop cycle time:

Position controller 3 ms 2 ms 6 ms

Control loop cycle time:

Speed controller 0,6 ms 0.6 ms ---

Program memory 256 K byte 256 K byte 128 K byte

Input resolution 0.1 µm 0.1 µm 1 µm

TNC 425/TNC 415 B/TNC 407 1-3

1 Introduction

Visual display unit and keyboard

The 14-inch color screen displays all the information necessary for effec-

tive use of the TNCs’ capabilities. Immediately below the screen are soft

keys (keys whose functions are identified on screen) to simplify and

improve flexibility of programming.

The keys are arranged on the keyboard in groups according to function:

This makes it easier to create programs and to use the TNC’s functions.

Programming

The TNCs are programmed right at the machine with interactive, conver-

sational guidance. If a production drawing is not specially dimensioned for

NC, the HEIDENHAIN FK free contour programming makes the necessary

calculations automatically. The TNCs can also be programmed in ISO

format or in DNC mode.

The TNC function for sectioning programs provides a clearer view of long

programs. You can use this function to subdivide a specific program into

structural points. The individual structural points are then displayed in the

right window of the screen and enable you to recognize the structure of

the program at a glance.

Graphics

Interactive graphics show you the contour that you are programming.

Workpiece machining can be graphically simulated both during (only

TNC 415 B and TNC 425) or before actual machining. Various display

modes are available.

Compatibility

The TNCs can execute all part programs that were written on

HEIDENHAIN controls TNC 150 B and later.

1.1 The TNC 425, TNC 415 B and TNC 407

TNC 425/TNC 415 B/TNC 4071-4

1 Introduction

Keyboard

The keys on the TNC keyboard are marked with symbols and abbrevia-

tions that make them easy to remember. They are grouped according to

the following functions:

1.1 The TNC 425, TNC 415 B and TNC 407

Typewriter-style keyboard for entering

file names, comments and other texts,

as well as programming in ISO format

Arrow keys and

GOTO jump

command

Programming

modes

The functions of the individual keys are described in the fold-out of the

front cover.

Machine panel buttons, e.g. I(NC start), are describe in the manual

for your machine tool. In this manual they are shown in gray.

Program and file

management

Machine

operating

modes

Numerical input and axis selection

Dialog initiation

TNC 425/TNC 415 B/TNC 407 1-5

1 Introduction

GRAPHICS

TEXT

SPLIT

SCREEN

1.1 The TNC 425, TNC 415 B and TNC 407

Visual display unit

Brightness control

Contrast control

Switchover between

the active program-

ming and machining

modes

SPLIT SCREEN key for

switching screen

layout (see page 1-6)

Headline

The two selected TNC modes are written in the screen headline:

the machining mode to the left and the programming mode to the right.

The currently active mode is displayed in the larger box, where the dialog

prompts and TNC messages also appear.

Soft keys

The soft keys select functions which are described in the fields immedi-

ately above them. The shift keys to the right and left call additional soft-

key functions. Colored lines above the soft-key row indicate the number of

available rows. The line representing the active row is highlighted.

Soft keys with context-specific

functions, and two shift keys

for additional soft-key rows

TNC 425/TNC 415 B/TNC 4071-6

1 Introduction

1.1 The TNC 425, TNC 415 B and TNC 407

Screen layout

You can select the type of display on the TNC screen by pressing the

SPLIT SCREEN key and one of the soft keys listed below. Depending on

the active mode of operation, you can select:

Mode of operation Screen layout Soft key

MANUAL Display positions only

ELECTRONIC HANDWHEEL

Display positions in the left and

STATUS in the right screen window

POSITIONING WITH MANUAL DATA INPUT Display program blocks only

Display program blocks in the left and

STATUS in the right screens window

PROGRAM RUN / FULL SEQUENCE, Display program blocks only

PROGRAM RUN / SINGLE BLOCK,

TEST RUN

Display program blocks in the left and

program structure in the right screen window

Display program blocks in the left and

STATUS in the right screen window

Display program blocks in the left and

graphics in the right screen window

Display graphics only

PROGRAMMING AND EDITING Display program blocks only

Display program blocks in the left and

program structure in the right screen window

Display program blocks in the left and

programming graphics in the right screen window

TNC 425/TNC 415 B/TNC 407 1-7

1 Introduction

TEST RUN:

Soft-key row

Text of the

selected

program

Graphics

(or additional

status display,

or program

structure)

Programming mode is active

Screen layout of modesScreen layout of modes

Screen layout of modes

PROGRAMMING AND EDITING

1.1 The TNC 425, TNC 415 B and TNC 407

Machining

mode

Machining

mode

Soft-key row

Text of the

selected

program

Display of

structural

points

Programming mode is active

TNC 425/TNC 415 B/TNC 4071-8

1 Introduction

1.1 The TNC 425, TNC 415 B and TNC 407

PROGRAM RUN / FULL SEQUENCE, PROGRAM RUN / SINGLE BLOCK

A machining mode is

selected

Status display

Graphics

(or additional

status display,

or program

structure)

Soft-key row

MANUAL OPERATION and ELECTRONIC HANDWHEEL modes:

• Coordinates

• Selected axis

•❊, if TNC is in

operation

• Status display,

e.g. feed rate F,

miscellaneous

function M,

Symbols for basic

rotation and/or tilted

working plane

A machining mode is

selected

Soft-key row

Additional

status display

Programming

mode

Text of the

selected

program

Programming

mode

TNC 425/TNC 415 B/TNC 407 1-9

1 Introduction

Fig. 1.8: The HR 330 electronic handwheel

1.1 The TNC 425, TNC 415 B and TNC 407

TNC Accessories

3D touch probes

The TNC provides the following features when

used in conjunction with a 3D touch probe (see

Chapter 9):

• Electronic workpiece locating (compensation

of workpiece misalignment)

• Datum setting

• Workpiece measurement during program run

• Digitizing 3D surfaces (option)

• Tool measurement with the TT 110 touch probe

Floppy disk unit

With the HEIDENHAIN FE 401 floppy disk unit you

can store programs and tables on diskette.

It is also a means of transferring programs which

were created on a personal computer.

With the FE 401 you can transfer programs that

were written on a PC to the TNC. Very large

programs that exceed the storage capacity of the

TNC can be “drip fed” block-by-block: The machine

executes the transferred blocks and erases them

immediately, freeing memory for more blocks from

the FE.

Electronic handwheel

Electronic handwheels give you manual control of

the axis slides. Similar to a conventional machine

tool, the machine slide moves in direct relation to

the rotation of the handwheel. A wide range of

traverses per handwheel revolution is available.

Portable handwheels such as the HR 330 are

connected via cable to the TNC. Integral hand-

wheels such as the HR 130 are built into the

machine control panel. An adapter permits connec-

tion of up to three handwheels.

Your machine manufacturer can tell you more about

the handwheel configuration of your machine.

Fig. 1.7: HEIDENHAIN FE 401 floppy disk unit

Fig. 1.6: HEIDENHAIN 3D touch probes TS 511 and TS 120

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