HEIDENHAIN CNC Pilot 4290 - Manual (Page 181)

HEIDENHAIN CNC PILOT 4290 169
4.13 Other G Functions
Converting and mirroring G30
G30 converts G functions, M functions, and slide and spindle
numbers with the aid of the conversion lists (machine parameters
135 and following). G30 mirrors traverse paths and tool dimensions
and shifts the machine zero point about the “zero point offset“ of
the axis (see machine parameters 1114, 1164, ..).
Application:
For full-surface machining, you describe the complete contour,
machine the front face, rechuck the workpiece (through an expert
program) and then machine the rear face. To enable you to program
rear-face machining in the same way as front-face machining (Z axis
orientation, arc rotational direction, etc.). Includes the expert
program commands for converting and mirroring.
Parameters
H:
Table number
■ H=0: Switch off the conversion and compensate the offset
■ H=1..4: conversion table; in addition, the machine zero offset
is activated (machine parameters 1114, 1164, and following).
Q: Selection
■ Q=0: Deactivate traverse path and tool mirroring
■ Q=1: Activate traverse path mirroring for specified axes
■ Q=2: Activate tool dimension mirroring for specified axes
X, Y, Z, U, V, W, A, B, C—axis selection
■ X=0: Mirroring of the X axis deactivated
■ X=1: Mirroring of the X axis activated
■ Y=0: Mirroring of the Y axis deactivated , etc.
Switch off protection zone G60
G60 is used to cancel protective zone monitoring. G60 is
programmed before the traversing command to be monitored or
not monitored.
Application example:
With G60, you can temporarily deactivate a programmed
monitoring of the protective zone in order to machine a centric
through hole.
Parameters
Q:
■ Q=0: Activate the protection zone (modal)
■ Q=1: Deactivate the protection zone (modal)
■ Q no input: Deactivate the protection zone for the current
NC block
Spindle with workpiece G98
The assignment of the spindle is required for thread-cutting,
drilling, and milling cycles if the workpiece is not in the main
spindle.
Parameters
Q:
Spindle number—default: 0 (master spindle)
■ Mirror the traverse paths and tool
lengths in separate G30 commands.
■ Q1, Q2 without axis selection switches
the mirroring function off.
■ Only configured axes can be selected.
Danger of collision!
■ In the transition from AUTOMATIC to
MANUAL OPERATION, conversions and
mirror images are retained.
■ The conversion/mirroring must be
switched off if you activate the front-face
machining after rear-face machining (for
example during program section repeats
with M99).
■ After a new program selection, the
conversion/mirroring is switched off
(example: transition from MANUAL to
AUTOMATIC mode).