Spigot - Outer Circle Segment (Cycle979) - Siemens SINUMERIK 840D sl Programming Manual
Measuring cycles
Hide thumbs
Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Programming manual (1334 pages) ,
- Commissioning manual (1102 pages)
Table of Contents
Advertisement
Measuring variants
3.3 Measure workpiece (milling)
3.3.18
Spigot - outer circle segment (CYCLE979)
Function
This measuring variant can be used to measure circle segment from the outside. The diameter
and the center point of the circle segment in the plane are determined. With the selection
setpoint value center point "YES", the position of the circle segment center can be defined as
the workpiece zero by means of setpoint specifications. With a starting angle in relation to the
1st geometry axis of the plane, the measuring points can be shifted along the circumference
of the circle segment. The distance between the measuring points along the circumference is
defined using an incremental angle.
With the "3D probe with spindle reversal" measuring method, measurement is performed in
the axes of the plane as differential measurement. The special procedure for this measurement
permits the use of an uncalibrated multi-directional probe. Probe types 712, 713 and 714 are
not suitable for this purpose. A positionable spindle is mandatory.
With the "Align 3D probe" measuring method, the switching direction of the probe is always
aligned to the current measuring direction. This function is recommended when high demands
are placed on the measuring accuracy. Probe types 712, 713 and 714 are not suitable for this
purpose. A positionable spindle is mandatory.
The measurement result (measurement difference) can be used as follows:
● Correction of a WO so that the workpiece zero is in relation to the center point of the circle
segment
● Offset of a tool
● Measurement without offset
Measuring principle
The circle segment can be measured with three or four measuring points. The intermediate
positions to the measuring points are not approached along a circular path parallel to the
geometry axis. The distance between the probe ball circumference and the hole corresponds
to the measuring path DFA. The direction of the circular path is obtained from the sign of the
incremental angle. The measuring path from the intermediate positions to the measuring points
is radial to the hole periphery.
The circle segment obtained from the number of measuring points and the incremental angle
must not exceed 360 degrees. The measured difference of the segment diameter is used as
tool offset, the segment zero point as a basis for a zero offset.
190
Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
Measuring cycles
Hide quick links:
Advertisement
Table of Contents
