HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 63)

HEIDENHAIN TNC 620 63
3.4 REAMING (Cy
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3.4 REAMING (Cycle 201, DIN/ISO:
G201, Advanced Programming
Features Software Option)
Cycle run
1 The TNC positions the tool in the spindle axis to the entered setup
clearance above the workpiece surface at rapid traverse FMAX.
2 The tool reams to the entered depth at the programmed feed
rate F.
3 If programmed, the tool remains at the hole bottom for the entered
dwell time.
4 The tool then retracts to the setup clearance at the feed rate F, and
from there—if programmed—to the 2nd setup clearance at FMAX.
Please note while programming:
Program a positioning block for the starting point (hole
center) in the working plane with radius compensation R0.
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH = 0, the cycle will not be executed.
Danger of collision!
Use the machine parameter displayDepthErr to define
whether, if a positive depth is entered, the TNC should
output an error message (on) or not (off).
Keep in mind that the TNC reverses the calculation for
pre-positioning when a positive depth is entered. This
means that the tool moves at rapid traverse in the tool axis
to setup clearance below the workpiece surface!