HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 426)

426 Programming: Turning Operations
13.2 Basis F
unctions (Sof
tw
ar
e Option 50)
Radial recess: depth=5, width=10, Pos.= Z-15
The algebraic sign for the recess depth specifies the
machining position of the recess (inside/outside
machining).
Algebraic sign of recess depth for outside machining:
„ Use a negative sign when the contour element runs in a
negative direction to the Z coordinate
„ Use a positive sign when the contour element runs in a
positive direction to the Z coordinate
Algebraic sign of recess depth for inside machining:
„ Use a positive sign when the contour element runs in a
negative direction to the Z coordinate
„ Use a negative sign when the contour element runs in a
positive direction to the Z coordinate
21 L X+40 Z+0
22 L Z-30
23 GRV RADIAL CENTER-15 DEPTH-5 BREADTH10 CHF1 FAR_CHF1
24 L X+60