HEIDENHAIN iTNC 530 (340 49x-01) ISO programming - Manual (Page 341)

HEIDENHAIN iTNC 530 341
8.6 SL Cy
cles
Characteristics of the fixed cycles
„ The TNC automatically positions the tool to the set-up clearance
before a cycle.
„ 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
for 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 in a
tangential arc (for tool 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 G120.
With MP7420 you can determine where the tool is
positioned at the end of Cycles G121 to G124.