Programming instructions

ADT-CNC4620 Programming Manual
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3.6.1. Axial roughing cycle G71
Standard instruction format:
Format: G71 U( d△ ) R(e) F_ S_ T_
G71 P(ns) Q(nf) U( u△ ) W( w△ )
U(△d): the single tool feed (radius) of X axis during roughing, unsigned
R (e): the single tool retreat (radius) of X axis during roughing, unsigned
P (ns): start block line of finishing track
Q(nf): end block line of finishing track
U(△u): reserved finishing amount of X axis, unsigned
W(△w): reserved finishing amount of Z axis, unsigned
F: feeding speed during roughing
S: principal axis rotation during roughing
T: tool No., tool offset No.
Finishing track---FT (finish turning) track Fast moving Cutting feeding
A: roughing reference point A-B-C: program path
Roughing start (rough turning start) Initial point
Execution process:
① Initial point → A1: fast moving;
② First roughing cycle: A
1
→B
1
→C
1→D1→A2
A
1
→B
1
, C
1→D1→A2: fast moving
B
1
→C
1: linear interpolation
③ Second roughing cycle: A
2
→B
2
→C
2→D2→A3
A
2
→B2, C
2→D2→A3: fast moving
B
2
→C2
: linear interpolation
④ The n
th
roughing cycle: A
n
→B
n
→C
n→Dn→A’