HEIDENHAIN TNC 620 User Manual page 58

2
Position the tool to the cutting depth
Press the L key
Press the Z axis key
Enter the value for the position to be approached
(e.g., -5 mm)
Press the ENT key
At radius compensation, press ENT
The control applies R0.
Enter the value for the positioning feed rate (e.g.,
3000 mm/min)
Press the ENT key
Enter a miscellaneous function M, such as M8 to
turn coolant on
Press the END key
The control saves the positioning block.
Approach the contour smoothly
Press the APPR DEP key
The control displays a soft key row with approach
and departure functions.
Press the APPR CT soft key
Enter the coordinates of the contour starting
point 1
Press the ENT key
For the center angle CCA, enter the approach
angle (e.g., 90°)
Press the ENT key
Enter the approach radius (e.g., 8 mm)
Press the ENT key
Press the RL soft key
The control applies radius compensation to the
left.
Enter the value for the machining feed rate (e.g.,
700 mm/min)
Press the END key
The control saves the approach movement.
58
First steps | Programming the first part
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022