Hole - 1 Hole (Cycle977) - Siemens SINUMERIK 840D sl Programming Manual

Measuring variants
2.3 Measure workpiece (milling)
2.3.12

Hole - 1 hole (CYCLE977)

Function
This measuring version can be used to measure a hole in a workpiece. The hole diameter is
measured as well as the hole center point determined. The measurements are always
performed parallel to the geometry axis of the active plane.
With a starting angle, the measuring points can be shifted to the periphery of the hole. A
protection zone can be defined in the hole.
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 of the hole.
● Offset of a tool,
● Measurement without offset
Measuring principle
2 opposite points in each of the two geometry axes of the plane are measured. The hole
diameter and the center point are calculated from these 4 measured actual positions, taking
into account the calibration values. From the measuring points of the 1st geometry axis of
the plane, the center of this axis is calculated and the probe positioned at this center.
Starting from this center point, the two points in the 2nd geometry axis are measured, from
which the hole diameter is determined. The measurements start in the positive direction of
the 1st geometry axis. The measured difference of the hole diameter is used for a tool offset
and the position of the hole zero point as basis for a work offset.
Measure: Hole (CYCLE977)
Preconditions
● The probe must be active as tool.
● Tool type of the probe:
126
– 3D multi probe (type 710)
– Mono probe (type 712)
– Star-type probe (type 714)
Measure: Hole with protection zone
(CYCLE977)
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
Measuring cycles