Hole - Rectangular Pocket (Cycle977) - Siemens SINUMERIK 840D sl Programming Manual

Measuring variants
2.3 Measure workpiece (milling)
2.3.11

Hole - rectangular pocket (CYCLE977)

Function
This measuring version can be used to measure a rectangular pocket in a workpiece. The
pocket width and the pocket length are measured and the pocket center point is determined.
Measurements are also possible at a rectangular pocket (horizontal) rotated in the working
plane. To do this, an angle corresponding to the real pocket position must be entered into
the parameterizing screen form The probing at the sides of the pocket is always at right
angles. A protection zone can be defined in the pocket.
The measurement result (measurement difference) can be used as follows:
● Correction of a WO so that the workpiece zero point is in relation to the center point of the
● Offset of a tool,
● Measurement without offset
Measuring principle
Two opposite points in each of the two geometry axes of the plane are measured. The
measurements start in the positive direction of the 1st geometry axis. From the four
measured actual positions of the pocket sides, the pocket width and the pocket length are
calculated, taking into account the calibration values. The position of the pocket center as
workpiece zero is determined corresponding to the work offset selected to be corrected. The
measuring differences of the side lengths are used as the basic quantity for a tool offset, the
position of the pocket zero point as basis for the work offset.
Measure: Rectangular pocket (CYCLE977)
122
rectangle.
Measure: Rectangular pocket with protection
zone (CYCLE977)
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
Measuring cycles