HEIDENHAIN MANUALplus 4110 Pilot - Manual (Page 95)

95
End-f
ace mac
hining
End-face contour milling cycle G793
G793 mills figures or “free contours“ on the end-face.
The figure or “free contour“ to be milled follows G793:
• Figure: G304 – circle, G305 – rectangle or G307 – polygon followed
by G80.
• Free contour: G100 – Start point free contour; contour description
with G101 to G103; G80 – end of contour description
Parameters
Z, ZE: Upper edge of milling, lower edge of milling
P:
Maximum infeed– default: One infeed
U: Overlap factor – default: 0
• U=0: contour milling
• U>0: (minimum) overlapping = U*cutter diameter
R: Approach radius (radius of approach/depart arcs) – default: 0
• R=0: Contour element is approached directly – followed by
vertical depth-infeeding
• R>0: Cutter moves in approach/depart arcs
• R<0 for inside corners: Cutter moves in approach/depart arcs
• R<0 for outside corners: Long linear approach/depart element
I: Contour parallel oversize
K: Oversize in infeed direction
F: Infeed rate (for depth infeed) – default: active feed rate
E: Reduced feed rate for circular elements – default: current feed rate
H: Cutting direction – default: 0
• H=0: Up-cut milling
• H=1: Down-cut milling
Q: Cycle type (= milling location) – default: 0
Contour milling (U=0)
• Q=0: Cutter center point on the contour
• Q=1 – closed contour: Inside milling
• Q=1 – open contour: In milling direction left
• Q=2 – closed contour: Outside milling
• Q=2 – open contour: In milling direction
right
• Q=3 (open contours): See support graphics
Pocket milling (U>0)
• Q=0: From the inside out
• Q=1: From the outside in
O: Roughing/finishing – default: 0
• O=0: Roughing
• O=1: Finishing