HEIDENHAIN ITNC 530 - CYCLE PROGRAMMING User Manual page 254

10.1 Basics
Overview
The TNC offers four cycles for machining surfaces with the following
characteristics:
Created with a CAD/CAM system
Flat, rectangular surfaces
Flat, oblique-angled surfaces
Surfaces that are inclined in any way
Twisted surfaces
Cycle
30 RUN 3-D DATA
For multipass milling of 3-D data in
several infeeds
230 MULTIPASS MILLING
For flat rectangular surfaces
231 RULED SURFACE
For oblique, inclined or twisted surfaces
232 FACE MILLING
For level rectangular surfaces, with
indicated oversizes and multiple infeeds
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Soft key Page
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Fixed Cycles: Multipass Milling