HEIDENHAIN TNC 640 User Manual page 626

13
Mode of action of the programmed feed rate
The control provides two functions for defining the operating
method of the programmed feed rate:
F TCP determines that the programmed feed
rate is interpreted as the actual relative velocity
between the tool tip (tool center point) and the
workpiece
F CONT determines that the programmed feed
rate is interpreted as the contouring feed rate
of the axes programmed in the respective NC
block.
Example
...
13 FUNCTION TCPM F TCP ...
14 FUNCTION TCPM F CONT ...
...
626
Multiple-Axis Machining | FUNCTION TCPM (option 9)
Feed rate refers to the tool tip
Feed rate is interpreted as the speed of the tool along the
contour
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017