HEIDENHAIN TNC 320 (34055x-06) Cycle programming - Manual (Page 65)

REAMING (Cycle 201, DIN/ISO: G201) 3.4
3
TNC 320 | User's Manual Cycle Programming | 5/2013
65
3.4 REAMING (Cycle 201, DIN/ISO: G201)
Cycle run
1 The TNC positions the tool in the tool axis at rapid traverse
FMAX to the entered set-up clearance above the workpiece
surface.
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 set-up clearance at the feed rate F, and
from there—if programmed—to the 2nd set-up clearance in
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 set-up clearance below
the workpiece surface!