HEIDENHAIN SW 548328-05 DIN Programming - Manual (Page 355)

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355
4.26 Milling cy
cles
G840—Deburring
G840 deburrs when you program chamfer width B. If there is any
overlapping of the contour, specify with cycle type Q whether the first
section (as of starting point) or the entire contour is to be machined.
Program only the parameters given in the following table.
Parameters—Deburring
Q Cycle type (= milling location).
 Open contour. If there is any overlapping, Q defines whether
the first section (as of starting point) or the entire contour is
to be machined.
 Q=0: Center of milling cutter on the contour (without TRC)
 Q=1: Machining at the left of the contour. If there is any
overlapping, G840 machines only the first section of the
contour (starting point: 1st point of intersection).
 Q=2: Machining at the right of the contour. If there is any
overlapping, G840 machines only the first section of the
contour (starting point: 1st point of intersection).
 Q=3: The contour is machined to the left or right
depending on H and the direction of cutter rotation (see
table). If there is any overlapping, G840 machines only the
first section of the contour (starting point: 1st point of
intersection).
 Q=4: Machining at the left of the contour. If there is
overlapping, G840 machines the entire contour.
 Q=5: Machining at the right of the contour. If there is
overlapping, G840 machines the entire contour.
 Closed contours
 Q=0: Center of milling cutter on the contour (hole position
= starting point)
 Q=1: Inside milling
 Q=2: Outside milling
 Q=3 to 5: Not allowed
ID Milling contour—name of the contour to be milled
NS Block number—beginning of contour section
 Figures: Block number of the figure
 Free open or closed contour: First contour element (not
starting point)
NE Block number—end of contour section
 Figures, free closed contour: No input
 Free open contour: Last contour element
 Contour consists of one element:
 No input: Machining in contour direction
 NS=NE programmed: Machining against the contour
direction
E Reduced feed rate for circular elements (default: current feed
rate)