HEIDENHAIN TNC 426, User Manual

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HEIDENHAIN TNC 426, TNC 430 319
8.8
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8.8 Coordinate Transformation
Cycles
Overview
Once a contour has been programmed, you can position it on the
workpiece at various locations and in different sizes through the use
of coordinate transformations. The TNC provides the following
coordinate transformation cycles:
Effect of coordinate transformations
Beginning of effect: A coordinate transformation becomes effective as
soon as it is defined — it is not called. It remains in effect until it is
changed or canceled.
To cancel coordinate transformations:
n
Define cycles for basic behavior with a new value, such as scaling
factor 1.0
n
Execute a miscellaneous function M02, M30, or an END PGM block
(depending on machine parameter 7300)
n
Select a new program
n
Program miscellaneous function M142 Erasing modal program
information
Cycle Soft key
7 DATUM SHIFT
For shifting contours directly within the program or
from datum tables
247 DATUM SETTING
Datum setting during program run
8 MIRROR IMAGE
Mirroring contours
10 ROTATION
For rotating contours in the working plane
11 SCALING FACTOR
For increasing or reducing the size of contours
26 AXIS-SPECIFIC SCALING FACTOR
For increasing or reducing the size of contours with
scaling factors for each axis
19 WORKING PLANE
For executing machining operations in a tilted
coordinate system
for machines with tilting heads
and/or rotary tables