Programming Example - Siemens SINUMERIK 840D sl Programming Manual

5.4.4.2

Programming example

ZO determination on a rectangle with CYCLE977
In the G17 plane, an outside rectangle web is to be measured with setpoint lengths width in
X=100.000 and in Y=200.00 mm. The settable ZO G54 is to be corrected in such a way that
the center of the rectangle is at X=150.000 and Y=170.000 mm.
Measurement is also performed at G54. After measurement is complete, the changed ZO is
activated.
The maximum possible deviation of the center is taken as 2 mm; the maximum possible
variance in lengths is 3 mm. To obtain a minimum measuring path of 1 mm, the measuring
path is programmed as _FA=2+3+1=6 mm (max. measuring path _FA=12 mm).
A measured deviation of the center of the rectangle from the setpoint of >1.8 mm is however
not permitted in either axis.
Height of rectangle and measuring height in Z: see Fig.
Clamping for workpiece:
Zero offset, with settable ZO G54: NVx, NVy, ... (values when measuring)
Workpiece probe 1, used as tool T9, D1, is
to be used.
The following is entered under T9, D1 in
the tool offset memory:
Tool type (DP1):
Length 1 - geometry (DP3):
Radius - geometry (DP6):
Length 1 (L1) must refer to the center of
the probe ball (_CBIT[14]=0), as for
calibration.
Careful when positioning! Radius R in
length (L1) is ignored.
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
5.4 CYCLE977 workpiece: Measure hole/shaft/groove/web/rectangle parallel to axes
Measuring Cycles for Milling and Machining Centers
710
L1 = 50.000
R = 3.000
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