Edge Distance - Align Edge (Cycle998) - Siemens SINUMERIK 840D sl Programming Manual

Measuring variants
2.3 Measure workpiece (milling)
2.3.6

Edge distance - align edge (CYCLE998)

Function
The workpiece lies in any direction, i.e. not parallel to the workpiece coordinate system
(WCS) on the work table. By measuring two points on the workpiece reference edge that you
have selected, you determine the angle to the active coordinate system. You can correct this
angle as a rotation either in a geometry axis or as translational offset in a rotary axis (rotary
table) in any WO or in the active WO.
Note
Maximum measured angle
Using the "Align edge" measuring version, a maximum angle of +/- 45 degrees can be
measured.
Measuring principle
The Align edge measuring variant is performed according to the 1-angle measurement
principle:
● For a clamped workpiece that is rotated in the plane, the angular offset is in the rotary
● For a workpiece on a rotary table, the angular offset is added to the translatory offset of
For both correction versions, the translational components the WO remain unchanged and
should be redetermined after the edge has been aligned. This can be realized in a
subsequent measuring program using the function "Set edge".
100
part of the geometry axis that is located perpendicular to the measuring plane.
Example of G17 plane: Measuring axis X, offset axis Y
– Angular offset is realized in the Z rotation
– The rotation offset in the WO is performed so that the actual position of the edge
(actual value) and the desired setpoint angle (α) in the workpiece coordinate system
must be taken into account.
the rotary axis (table axis). The correction only makes sense if the rotary axis rotates
around the geometry axis that is located perpendicular to the measuring plane.
Example of G17 plane: Measuring axis X, offset axis Y
– Angular offset is realized in the C axis. Rotary axis C rotates a rotary table around the
Z axis.
– After the measurement, the rotary axis should be repositioned to align the workpiece.
– Example: G55 G0 C0.
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
Measuring cycles