HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 430)

Cycles: Turning
12.32 CHECK UNBALANCE (Cycle 892, DIN/ISO: G892)
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TNC 640 | User's Manual Cycle Programming | 1/2015
12.32 CHECK UNBALANCE (Cycle 892, DIN/
ISO: G892)
Application
When turning a nonsymmetrical workpiece, such as a pump
body, an unbalance may occur. This may cause a high load on the
machine, depending on the rotational speed, mass and shape of
the workpiece. With Cycle 892 CHECK UNBALANCE the TNC
checks the unbalance of the turning spindle. This cycle uses two
parameters. Q450 describes the maximum unbalance and Q451
the maximum speed.
If the maximum unbalance is exceeded, an
error message is displayed and the program is aborted. When
the maximum unbalance is not exceeded, the TNC executes the
program without interruptions. This function protects the machine
mechanics. It enables you to take action if excessive unbalance is
detected.