Cycles For Multipass Milling; Run Digitized Data (Cycle 30) - HEIDENHAIN TNC 426 B User Manual

8.6 Cycles for Multipass 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
30 RUN DIGITIZED DATA
For multipass milling of digitized surface data
in several infeeds
230 MULTIPASS MILLING
For flat rectangular surfaces
231 RULED SURFACE
For oblique, inclined or twisted surfaces

RUN DIGITIZED DATA (Cycle 30)

1 From the current position, the TNC positions the tool in rapid
traverse FMAX 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 in FMAX 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 FMAX to set-up
clearance.
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8 Programming: Cycles