HEIDENHAIN TNC 335 Technical Manual - Manual (Page 225)

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TNC 360 6 Display and Operation 8/95
6.6.2 Pocket milling
The overlap factor for clearing out a rectangular or circular pocket ( Cycle 4 and Cycle 5) can be
altered by machine parameters.
Stepover
Stepover = (MP7430) x cutter radius
MP7430 Overlap factor for pocket milling
Input range: 0.1 to 1.414
6.6.3 Milling cycles for pockets with free-programmed contours
The sequence for milling cycles for pockets with free programmed contours (Cycles 6, 14, 15, 16)
can be changed by machine parameters.
The choices are:
– Whether a channel should first be milled around the contour and the pocket cleared out afterwards,
or the pocket cleared out first, and then a channel milled round the contour.
– Whether the channel should be milled in a clockwise or anti-clockwise direction.
– Under which conditions programmed pockets should be merged. The choice is between:
merging programmed pockets when the programmed contours overlap, or when the tool center
paths intersect.
– Whether the channel milling should be performed in one operation for all stepovers, or whether
for each peck depth channel milling and clearing out should be performed alternately.
The programmed contours of two pockets have a small overlap.