beautypg.com

Calling a cycle, Cycle fundamentals 15.3 working with fixed cycles – HEIDENHAIN TNC 128 (77184x-02) User Manual

Page 376

background image

Cycle fundamentals

15.3 Working with fixed cycles

15

376

TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014

Calling a cycle

Prerequisites

The following data must always be programmed
before a cycle call:

BLK FORM for graphic display (needed only for
test graphics)

Tool call

Direction of spindle rotation (M functions M3/M4)

Cycle definition (CYCL DEF)

For some cycles, additional prerequisites must be
observed. They are detailed in the descriptions for
each cycle.

The following cycles become effective automatically as soon as
they are defined in the part program. These cycles cannot and
must not be called:

Coordinate transformation cycles

Cycle 9 DWELL TIME

All touch probe cycles

You can call all other cycles with the functions described as follows.

Calling a cycle with CYCL CALL

The

CYCL CALL function calls the most recently defined fixed

cycle once. The starting point of the cycle is the position that was
programmed last before the CYCL CALL block.

To program the cycle call, press the

CYCL CALL

key

Press the

CYCL CALL M soft key to enter a cycle

call

If necessary, enter the miscellaneous function M
(for example

M3 to switch the spindle on), or end

the dialog by pressing the

END key

Calling a cycle with CYCL CALL PAT

The

CYCL CALL PAT function calls the most recently defined fixed

cycle at all positions that you defined in a PATTERN DEF pattern
definition (see "PATTERN DEF pattern definition", page 378) or in
a point table (see "Point tables", page 389).