The hole centers should therefore be programmed before or after the cycle call as follows (see
also Section, Cycles on single position or position pattern (MCALL)):
● A single position should be programmed before the cycle call
● Position patterns (MCALL) should be programmed after the cycle call
– as drilling pattern cycle (line, circle, etc.) or
– as a sequence of positioning blocks for the hole centers
10.1.2 Centering (CYCLE81)
Function
With the "Centering" function, the tool drills with the programmed spindle speed and feedrate
either:
● Down to the programmed final drilling depth or
● So deep until the programmed diameter of the centering is reached
The tool is retracted after a programmed dwell time has elapsed.
Approach/retraction
1. The tool moves with G0 to safety clearance of the reference point.
2. Inserted into the workpiece with G1 and the programmed feedrate F until the depth or the
centering diameter is reached.
3. On expiry of a dwell time DT, the tool is retracted at rapid traverse G0 to the retraction plane.
Procedure
1. The part program or ShopMill program to be processed has been created
and you are in the editor.
2. Press the "Drilling" softkey.
3. Press the "Center" softkey.
The "Centering" input window opens.
Programming technological functions (cycles)
10.1 Drilling
Milling
372 Operating Manual, 08/2018, 6FC5398-7CP41-0BA0
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