HEIDENHAIN TNC 620 User Manual page 142

5
Radius compensation
The radius compensation must be in the NC block in which you
move to the first contour element. You cannot activate radius
compensation in an NC block for a circular path. It must be activated
beforehand in a straight-line block.
Further information: "Path contours — Cartesian coordinates",
Page 154
Further information: "Approaching and departing a contour",
Page 144
Pre-positioning
Danger of collision!
The control does not automatically check whether collisions
can occur between the tool and the workpiece. Incorrect pre-
positioning can also lead to contour damage. There is danger of
collision during the approach movement!
Program a suitable pre-position
Check the sequence and contour with the aid of the graphic
simulation
Creating the NC blocks with the path function keys
The gray path function keys initiate the dialog. The control asks
you successively for all the necessary information and inserts the
program block into the NC program.
142
NOTICE
Programming contours | Fundamentals of path functions
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022