HEIDENHAIN TNC 406 - Manual (Page 42)

HEIDENHAIN TNC 406, TNC 416 21
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Eroding a workpiece manually
The MANUAL and JOG INCREMENT modes of operation enable you
to erode a workpiece manually. This function is especially useful for
initial erosion and datum setting. The present gap must be taken into
account when setting the datum.
Procedure
8 Select the MANUAL or JOG INCREMENT mode of operation.
8 Switch on the generator with M36
8 Use the axis direction buttons to preposition the electrode in the
working plane. During free run of the electrode, the manual feed
rate is effective.
8 Move the electrode with the axis direction button until it touches the
workpiece. Gap control becomes effective upon contact. The TNC
deduces the eroding direction from the axis direction button that
was last pressed.
8 To end the erosion process, press the machine axis-direction button
for the opposite direction.
Prerequisite
Cycle 1 GENERATOR must be active.
In the MANUAL mode of operation, you can erode up to
the limit switch. In the JOG INCREMENT mode of
operation, the workpiece is eroded the preset distance.
During erosion you can only move the electrode in the
other axes by using the handwheel.