HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 511)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 511
6.7 Milling cy
cles f
o
r the Y axis
Cycle run
1 Starting position (X, Y, Z, C) is the position before the cycle
begins.
2 Calculate the number of cuts (infeeds to the milling planes,
infeeds in the milling depths) and the plunging positions and
paths for reciprocating or helical plunges.
3 Approach to safety clearance and, depending on O, feed to the
first milling depth or approach helically or on a reciprocating path.
4 Mill a plane.
5 Retract by the safety clearance, return and cut to the next milling
depth.
6 Repeat steps 4 and 5 until the complete surface is milled.
7 Return to retraction plane RB.