HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 116)

5-17 TNC 425/TNC 415 B/TNC 407
5 Programming Tool Movements
Fig. 5.20: Chamfer from S to Z
5.4 Path Contours - Cartesian Coordinates
CHF
5 e.g.
ENT
1
S
E
2
CHF
CHF
Z
Fig. 5.21: Tool radius too large
1
E
2
Z
S
Chamfer CHF
The chamfer function enables you to cut off corners at the intersection of
two straight lines
Enter the length (CHF) to be removed from each side of the corner.
Prerequisites:
• The blocks before and after the CHF block must be in the same
working plane.
• 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.
• You cannot start a contour with a CHF block.
• A chamfer is only possible in the working plane.
• The feed rate for chamfering is taken from the previous block.
• The corner point E is cut off by the chamfer and is not part of the contour.
To program a chamfer:
Select “chamfer.”
CHAMFER SIDE LENGTH ?
Enter the length to be removed from each side of the corner, for
example 5 mm.
Resulting NC block: CHF 5