HUST CNC H6D-T - Page 106

HUST CNC H6D-T Manual
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Parameters:
In Fig. 3-33, the fine cut path is A~A1~B. A~C is the distance reserved for fine cut tool
retraction. The cutting depth is U( d). The amount of the material to be removed for
fine cutting is ( u/2) and ( w). The amount of retraction after each cut is R(e). The
path of the final rough cut is parallel to the path of the fine cut. The definition of
command groups in the program format is described below:
Fig. 3-33 Tool Path of G71 Rough Cut Canned Cycle
U( d) : Cutting depth (radius programming
,+).
If not specified, the parameter "G71, G72 Feeding Amount" is used.
R(e) : Amount of retraction after each rough cut (radius programming).
If not specified, the parameter "G71, G72 Retraction Amount" is used.
P(ns) : The number of the first block for a fine cut cycle.
Q(nf) : The number of the last block for a fine cut cycle.
U( u) : Amount of material to be removed for fine cut, X-axis.
W( w) : Amount of material to be removed for final cut, Z-axis.
F(f),S(s),T(t): F = feed-rate. S = spindle speed, T = tool selection.
The F, S, and T functions of G71 and previous blocks are
applicable to G71, but all F, S, and T functions from N(ns) to N(nf)
are not applicable to G71. They are only applicable to the fine cut
command G70.
e
(G00)
(F
)
A
C
A1
B
G00-fast feeding at
F rate
G70 fine cut (program) path
d
U/2
W