HEIDENHAIN CNC PILOT 640 User Manual page 419

DIN/ISO programming | Milling cycles
G840 – milling
You can change the machining direction and the cutter radius
compensation (TRC) with the cycle type Q, the cutting direction H
and the rotational direction of the tool. Program only the parameters
given in the following table.
See also:
G840—Fundamentals
Further information:
G840—Calculating hole positions
Further information:
Page 417
Parameters:
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 (hole position
= starting point)
Q = 1: Machining at the left of the contour. If there is any
overlapping, only the first area of the contour is machined
Q = 2: Machining at the right of the contour. If there is any
overlapping, only the first area of the contour is machined
Q = 3: Not allowed
Q = 4: Machining at the left of the contour. If there is any
overlapping, the entire contour is machined
Q = 5: Machining at the right of the contour. If there is any
overlapping, the entire contour is machined
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 milling contour
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
"G840 – fundamentals", Page 416
"G840 – calculating hole positions",
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