HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 433)

HEIDENHAIN TNC 640 433
13.3 Unbalance F
unctions
13.3 Unbalance Functions
Unbalance while turning
General information
In a turning operation, the tool is in a fixed position, whereas the rotary
table and the clamped workpiece rotate. Depending on the size of the
workpiece, the mass that is set in rotation can be very large. As the
workpiece rotates, it creates an outward centrifugal force.
The centrifugal force that occurs basically depends on the rotational
speed, the mass and the unbalance of the workpiece. An unbalance
occurs if an object with a rotationally nonsymmetrical mass
distribution is set in rotation. The rotation of the mass object creates
outward-directed centrifugal forces. If the rotating mass is evenly
distributed, the centrifugal forces cancel each other out.
The machine has to have been adapted by the machine
manufacturer for monitoring and measuring unbalance.
Not all machine types require the unbalance functions, so
these features might not be available on your machine
tool. The machine tool manual provides further
information.
The unbalance functions described here are basic
functions that are set up and adapted to the machine by
the machine manufacturer. The scope and effect of the
described functions may therefore vary from machine to
machine. The machine manufacturer may also provide
different unbalance functions. Please refer to your
machine tool manual.