HEIDENHAIN MANUALplus 4110 Pilot - Manual (Page 103)

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Lateral-surface contour milling cycle G794
G794 mills figures or “free contours“ on the lateral-surface.
The figure or “free contour“ to be milled follows G794:
• Figure: G314 – circle, G315 – rectangle or G317 – polygon followed
by G80.
• Free contour: G110 – Start point free contour; contour description
with G111 to G113; G80 – end of contour description
Parameters
X, XE: Upper milling edge (diameter), milling surface
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
• 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
K, I: Contour-parallel oversize, 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