HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 19)

20
Path Functions
Corner Rounding
The beginning and end of the arc extend tangentially from the previous
and subsequent contour elements.
Radius R of the circular arc
Feed rate F for corner rounding
Inserting a Chamfer Between Two Straight Lines
Chamfer side length
Feed rate F for the chamfer
7 L X+0 Y+30 RL F300 M3
8 L X+40 IY+5
9 CHF 12 F250
10 L IX+5 Y+0
• You cannot start a contour with a CHF block!
• The radius compensation before and after the CHF block must
be the same!
• An inside chamfer must be large enough to accommodate
the current tool!
5 L X+10 Y+40 RL F300 M3
6 L X+40 Y+25
7 RND R5 F100
8 L X+10 Y+5
An inside arc must be large enough to accommodate the
current tool!