HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 232)

8 Programming: Cycles 216
8.8 Cycles for Face Milling
The TNC offers four cycles for machining surfaces with the
following characteristics:
■ Created by digitizing or with a CAD/CAM system
■ Flat, rectangular surfaces
■ Flat, oblique-angled surfaces
■ Surfaces that are inclined in any way
■ Twisted surfaces
Cycle Soft key
G60 RUN DIGITIZED DATA
For multipass milling of digitized surface data
in several infeeds (not TNC 410)
G230 MULTIPASS MILLING
For flat rectangular surfaces
G231 RULED SURFACE
For oblique, inclined or twisted surfaces
RUN DIGITIZED DATA
(Cycle G60, not TNC 410)
1 From the current position, the TNC positions the tool in rapid
traverse in the tool axis to the set-up clearance above the MAX
point that you have programmed in the cycle.
2 The tool then moves at rapid traverse in the working plane to the
MIN point you have programmed in the cycle.
3 From this point, the tool advances to the first contour point at the
feed rate for plunging.
4 The TNC subsequently processes all points that are stored in the
digitizing data file at the feed rate for milling. If necessary, the
TNC retracts the tool between machining operations to set-up
clearance if specific areas are to be left unmachined.
5 At the end of the cycle, the tool is retracted in rapid traverse to
set-up clearance.
8.8 Cy
cles f
or F
ace Milling
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