GSK 988T, Руководство пользователя

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GSK988T Turning CNC System User Manual
74
Ⅰ
Programming
the starting point of finishing path (i.e. starting point of ns block)is the same these
of starting point and end point of G72, called A point; the first block of finishing
path(ns block)is used for Z rapid traversing or cutting feed, and the end point of
finishing path is called to B point; the end point of finishing path(end point of nf
block)is called to C point. The finishing path is A
→ B → C.
Roughing
path
The finishing path is the one after offsetting the finishing allowance （ Δ u, Δ w ） and is
the path contour formed by executing G72. A, B, C point of finishing path after
offset corresponds separately to A’, B’, C’point of roughing path, and the final
continuous cutting path of G72 is B’
→ C’ point.
Δ d It is each travel of Z tool infeed in roughing without sign symbols, and the direction
of tool infeed is defined by move direction of ns block.
Δ d is reserved after the
system executes W
（
Δ d
）
and NO.5132 value is modified. The value of system
parameter NO.051 is regarded as the travel of tool infeed when W （ Δ d ） is not input.
e It is each travel of Z tool infeed in roughing without sign symbols, and the direction
of tool retraction is opposite to that of tool infeed; after R(e) is executed, e value e
is reserved and the system modifies No.5133 value. The value of system
parameter NO.5133 is regarded as the travel of tool retraction when R
（ e ） is not
input.
ns Block number of the first block of finishing path.
nf Block number of the last block of finishing path.
Δ u X finishing allowance in roughing, (X coordinate offset of roughing path compared
to finishing path, i.e. the different value of X absolute coordinate between A’and A,
diameter value with sign symbols).
Δ w Z finishing allowance in roughing, its value: -9999.999~9999.999 ( Z coordinate
offset of roughing path compared to finishing path, i.e. the different value of X
absolute coordinates between A’ and A, with sign symbols).
F Cutting feedrate; S: Spindle speed; T: Tool number, tool offset number.
M, S, T, F
They can be specified in the first G72 or the second ones or program ns
～
nf. M, S,
T, F functions of M, S, T, F blocks are invalid in G72, and they are valid in G70
finishing blocks.
Address Incremental system
Metric （ mm ） input
Inch (inch) input
ISB system 0.001~99999.999 0.0001~9999.9999
W
（
Δ d
）
ISC system 0.0001~9999.9999 0.00001~999.99999
ISB system
0
～
99999.999 0
～
9999.9999 R
（
e
）
ISC system
0 ～ 9999.9999 0 ～ 999.99999
ISB system
-99999.999
～
99999.999 -9999.9999
～
9999.9999 U
（
Δ u
）
ISC system
-9999.9999
～
9999.9999 -999.99999
～
999.99999
ISB system
-99999.999 ～ 99999.999 -9999.9999 ～ 9999.9999 W （ Δ w ）
ISC system
-9999.9999
～
9999.9999 -999.99999
～
999.99999
ISC system
1
～
99999 1
～
99999 P
（
ns
）
ISC system
1 ～ 99999 1 ～ 99999
Q
（
nf
）
ISC system
1
～
99999 1
～
99999