Cycle Parameters - HEIDENHAIN TNC 620 User Manual

5
CIRCULAR STUD (cycle 258, DIN/ISO: G258) 5.8

Cycle parameters

Reference circuit Q573: Definition of whether the
dimensioning shall reference to the inscribed circle
or to the perimeter:
0= dimensioning refers to the inscribed circle
1= dimensioning refers to the perimeter
Reference circuit diameter Q571: Definition of
the diameter of the reference circuit. Specify in
parameter Q573 whether the diameter references
to the inscribed circle or the perimeter. Input range:
0 to 99999.9999
Workpiece blank diameter Q222: Definition of the
diameter of the workpiece blank. The workpiece
blank diameter must be greater than the finished
diameter. The TNC performs multiple stepovers
if the difference between the workpiece blank
diameter and reference circuit diameter is greater
than the permitted stepover (tool radius multiplied
by path overlap Q370). The TNC always calculates a
constant stepover. Input range 0 to 99999.9999
Number of corners Q572: Enter the number of
corners of the polygon. The TNC will always equally
divide the corners on the stud. Input range 3 to 30
Angle of rotation Q224: Specify which angle is
used to machine the first corner of the polygon.
Input range: -360° to +360°
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HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015