HEIDENHAIN MANUALPLUS 620 - Page 1466

1466 HEIDENHAIN Technical Manual MANUALplus 620
Sleeve monitoring
G930
With the G930 function you can activate sleeve monitoring for one axis per NC
channel. It monitors the maximum contact force for one axis. G930 moves the
defined axis by the programmed distance until the defined contact force has
been reached.
The parameter value from MP_forthTorqueFactor, in which you have to
configure the mechanical influences (screw pitch, distance from the center,
lever arms etc.), is required to convert the programmed contact force to the
torque-producing current I
q
. The factor from MP_forthTorqueFactor can be
determined from the mechanical machine components by means of the
following drawing.
In the following, the motor torque D
M
is to be determined depending on the
contact force F
rst
of the tailstock.
Torque of the motor gear wheel:
Therefore:
Torque of the drive gear wheel depending on the motor torque:
Therefore:
D
M
F
M
r
M
⋅=
F
M
D
M
r
M
------------=
D
A
F
M
r
A
⋅=
D
A
r
A
r
M
---------
D
M
⋅=