GSK 988T, Руководство пользователя

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GSK988T Turning CNC System User Manual
68
Ⅰ
Programming
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 G71. 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 G71 is B’
→ C’ point
Δ d
It is each travel
（
radius value
）
of X tool infeed in roughing without sign symbols, and the
direction of tool infeed is defined by move direction of ns block. The command value Δ d is
reserved after executing U （ Δ d ） and the value of NO.5132 is rewritten. The value of system
parameter NO.5132 is regarded as the travel of tool infeed when U
（
Δ d
）
is not input
e
It is travel
（
radius value
）
of X tool retraction in roughing
（
radius value
）
without sign symbols,
and the direction of tool retraction is opposite to that of tool infeed, the command value e is
reserved and the value of system parameter NO.5133 is rewritten after R
（
e
）
is executed.
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 range is as the following table (diameter) with sign symbols. X
coordinate offset of roughing path compared to finishing path, i.e. the different value of X
absolute coordinates between A’ and A. The system defaults
Δ u=0 when U （ Δ u ） is not
input, i.e. there is no X finishing allowance for roughing cycle
Δ w Z finishing allowance range is as the following table (diameter) with sign symbols. X
coordinate offset of roughing path compared to finishing path, i.e. the different value of X
absolute coordinates between A’ and A. The system defaults
Δ w=0 when U （ Δ w ） is not
input, i.e. there is no Z finishing allowance for roughing cycle
F Cutting feedrate; S: Spindle speed; T: Tool number, tool offset number
M, S, T,
F
They can be specified in the first G71 or the second ones or program ns
～
nf. M, S, T, F
functions of M, S, T, F blocks are invalid in G71, 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
U
（
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
ISC system
1
～
99999 1
～
99999 Q
（
nf
）
ISC system
1
～
99999 1
～
99999
Execution process: as Fig. 2-36.
①
X rapidly traverses to A’ from A point, X travel is Δ u, and Z travel is Δ w