HEIDENHAIN MANUALplus 4110 Pilot - Manual (Page 38)

37
Milling cycles
Helical groove milling
The cycle mills a helical groove from “Z1“ to “Z2“. “C1“ defines the
position of the groove beginning. Use “P“ and “K“ to define a ramp at
the beginning and end of the groove. The groove width equals the
cutter diameter.
The first downfeed is carried out with “I“ – MANUALplus calculates the
subsequent downfeedings as follows:
Current downfeed = I * (1 – (n–1) * E)
n: nth downfeeding
The downfeed is reduced step-by-step to >= 0.5 mm. After that each
downfeed is 0.5 mm.
Information on the cycle parameters:
C1:
Start angle
X1: Diameter
Z1, Z2: Start point/end point groove
F1: Pitch
P, K: Approach length, run-out length
U: Groove depth
I: Maximum downfeed
E: Cutting depth reduction