HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 245)

HEIDENHAIN TNC 640 245
1
1
.2 D
A
TUM SHIFT (Cy
c
le 7
, DIN/ISO: G54)
11.2 DATUM SHIFT (Cycle 7,
DIN/ISO: G54)
Effect
A DATUM SHIFT allows machining operations to be repeated at
various locations on the workpiece.
When the DATUM SHIFT cycle is defined, all coordinate data is based
on the new datum. The TNC displays the datum shift in each axis in
the additional status display. Input of rotary axes is also permitted.
Resetting
„ Program a datum shift to the coordinates X=0, Y=0 etc. directly with
a cycle definition.
„ Call a datum shift to the coordinates
X=0; Y=0 etc. from the datum table.
Cycle parameters
U Datum shift : Enter the coordinates of the new datum.
Absolute values are referenced to the manually set
workpiece datum. Incremental values are always
referenced to the datum which was last valid—this
can be a datum which has already been shifted. Input
range: Up to six NC axes, each from -99999.9999 to
99999.9999
Z
Z
X
X
Y
Y
Z
X
Y
X
Y
Example: NC blocks
13 CYCL DEF 7.0 DATUM SHIFT
14 CYCL DEF 7.1 X+60
16 CYCL DEF 7.3 Z-5
15 CYCL DEF 7.2 Y+40