Programming Example - Siemens SINUMERIK 840D sl Programming Manual

5.4.3.2

Programming example

Measuring a hole - paraxially with tool offset
The diameter of a hole in a workpiece is to be measured in the G17 plane and the radius of a
tool corrected accordingly.
Clamping for workpiece:
Zero offset, with settable ZO G54: NVx, NVy, ...
Workpiece probe 1, used as tool T9, D1, is to be used.
The probe is already calibrated. Arrays for
workpiece probe 1: _WP[0, ...]
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.
The hole was machined with milling tool T20, D1 in the same environment as for measuring
(G17, ...) with circular milling.
The radius of this tool should be corrected in wear according to the measuring result for the
hole diameter difference (actual value - set value). This tool offset will therefore affect the
production of the next workpieces or possible remachining.
The offset must take the empirical value in memory _EV[9] into consideration. Mean value
calculation _MV[9] and inclusion in calculation are also to be used.
A maximum deviation of the diameter from the setpoint of 1 mm is expected.
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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