Cycle998 Workpiece: Angle Measurement And Zo Determination; Function Overview - Siemens SINUMERIK 840D sl Programming Manual

Explanation of example
Automatic compensation is performed in G55, offset in X and Y by the calculated difference
between the actual value and set position of the groove center point, should it be less than 1
mm (_TSA) in both axes. Otherwise, alarm "Safe area violated" is output and program
execution cannot be continued. It must be interrupted with NC RESET.
The corrected ZO G55 is activated in block N90.
The results are entered in result array _OVR[ ].
5.7

CYCLE998 workpiece: Angle measurement and ZO determination

5.7
5.7.1

Function overview

Function
This measuring cycle enables you to determine the angular position of surfaces of a
workpiece. This can be used to close the workpiece clamping and correct the ZO as regards
angular position.
With 1-angle measurement:
• When a workpiece is clamped rotated in the plane:
• If a workpiece is on a rotary table:
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
5.7 CYCLE998 workpiece: Angle measurement and ZO determination
The angular offset is applied in the rotation component of the geometry axis that is
perpendicular to the measurement plane.
The angular offset is applied additively in the translation component of the rotary axis
(table axis).
Measuring Cycles for Milling and Machining Centers
5-95