11. PROGRAM COMMAND
B--63003EN--1/02
1012
This is a repetition of a peck drilling cycle in which when an overload
torque detection signal (skip signal is used) is received with an arbor
having an overload torque detection function during drilling, the tool is
retracted, and the spindle speed and cutting feedrate are changed to retry
machining.
The cycle is realized by:
* X-- and Y--axis positioning
* Positioning at point R along the Z--axis
* Cutting along the Z--axis (first time, depth of cut Q, incremental)
Repeated until
point Z is reached
Retracting
(bottom of hole minimum clearance , incremental)
Retracting
( to point R, absolute)
Forwarding
(point R to point with hole bottom + clearance , absolute)
Cutting
(second and subsequent times, cut of depth Q + , incremental)
* Dwell
* Return to point R along the Z--axis (or initial point) = end of cycle
G83(G98) G83(G99 )
Q
α
α
α
Q
α
α
α
Initial level
Point R
Point R
Overload torque Overload torque
Point Z
Point Z
Dwell
Dwell
11.17
SMALL HOLE PECK
DRILLING CYCLE
(M SERIES)
General