HEIDENHAIN TNC 620 Programming Station, User Manual

Page: 454 / 695

Multiple axismachining
12.2 The PLANE function: Tilting the working plane (software option 8)
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Selection of alternate tilting possibilities: SEQ +/– (entry
optional)
The position you define for the working plane is used by the TNC to
calculate the appropriate positioning of the rotary axes present on
the machine. In general there are always two solution possibilities.
Use the
SEQ
switch to specify which possibility the TNC should
use:
SEQ+
positions the master axis so that it assumes a positive
angle. The master axis is the first rotary axis going out from the
tool or the last rotary axis going out from the table (depending
on the machine configuration)
SEQ–
positions the master axis so that it assumes a negative
angle.
If the solution you chose with
SEQ
is not within the machine’s
range of traverse, the TNC displays the
Entered angle not
permitted
error message.
When the
PLANE AXIAL
function is used, the
SEQ
switch is nonfunctional.
If you do not define
SEQ
, the TNC determines the solution as
follows:
1 The TNC first checks whether both solution possibilities are
within the traverse range of the rotary axes.
2 If they are, then the TNC selects the shortest possible solution
based on the current position of the rotary axes.
3 If only one solution is within the traverse range, the TNC selects
this solution
4 If neither solution is within the traverse range, the TNC displays
the
Entered angle not permitted
error message.