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Overview, Sl cycles 7.1 – HEIDENHAIN TNC 640 (34059x-05) Cycle programming User Manual

Page 189

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SL Cycles

7.1

7

TNC 640 | User's Manual Cycle Programming | 1/2015

189

Characteristics of the fixed cycles

The TNC automatically positions the tool to the set-up clearance
before each cycle–position the tool to a safe position before the
cycle call.

Each level of infeed depth is milled without interruptions since the
cutter traverses around islands instead of over them.

The radius of "inside corners" can be programmed—the tool
keeps moving to prevent surface blemishes at inside corners (this
applies to the outermost pass in the Rough-out and Side Finishing
cycles).

The contour is approached in a tangential arc for side finishing.

For floor finishing, the tool again approaches the workpiece on a
tangential arc (for spindle axis Z, for example, the arc may be in
the Z/X plane).

The contour is machined throughout in either climb or up-cut
milling.

The machining data (such as milling depth, finishing allowance and
set-up clearance) are entered as CONTOUR DATA in Cycle 20.

...
99 END PGM SL2 MM

Overview

Cycle

Soft key

Page

14 CONTOUR GEOMETRY (essential)

190

20 CONTOUR DATA (essential)

195

21 PILOT DRILLING (optional)

197

22 ROUGH-OUT (essential)

199

23 FLOOR FINISHING (optional)

203

24 SIDE FINISHING (optional)

205

Enhanced cycles:

Cycle

Soft key

Page

25 CONTOUR TRAIN

208

270 CONTOUR TRAIN DATA

210