smart.Turn units | Units – Drilling in C axis
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
Linear pattern drilling, face unit
The unit machines a linear drilling pattern in which the individual
features are arranged at a regular spacing on the face.
Unit name: G74_Lin_Stirn_C / cycle: G74
Further information: "Deep boring G74", Page 378
Pattern form:
Q: Number of holes
X1, C1: Polar starting point – starting point of the pattern
XK, YK: Cartesian starting pnt
I, J: End point (XK) and (YK) – end point of the pattern
(Cartesian)
Ii, Ji: Distance (XKi) and (YKi) – incremental pattern spacing
R: Distance to first/last hole
Ri: Length – Incremental distance
A: Pattern ang. (reference: XK axis)
Cycle form:
Z1: Start point drill
Z2: End point drill
E: Period of dwell at end of hole (default: 0)
D: Retraction type
0: Rapid traverse
1: Feed rate
V: Feed reduction
0: Without reduction
1: At end of the hole
2: At start of the hole
3: At start & end of hole
AB: Drilling lengths (default: 0)
P: 1. Boring depth
IB: Hole depth reduct. val – value by which the hole depth
decreases after every infeed.
JB: Minimum hole depth
If you have entered a hole depth reduction value, the hole depth
is reduced only to the value entered in JB.
B: Return distance – value by which the tool is retracted after
reaching the respective hole depth
RI: Safety clearance internal – distance for reapproach inside
the hole (default: Safety clearance SCK)
RB: Return plane (default: back to start position)
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