GSK 980TDi, User Manual

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Chapter 3 G Commands
75
Ⅰ
Programming
Cc: the radius of the cylinder
；
Radius ≠ 0
：
starts the cylindrical interpolation mode
Radius
＝
0
：
cancels the cylindrical interpolation mode
its range: 0
～
99999999×least input increment (unit
：
mm/inch)
J( Δ i)
：
Total cutting value along X axis in the rough-turning,its range:±99999999×least input
increment(unit
：
mm/inch
，
diameter
，
with sign, when the symbol is positive, X axis
infeeds along with the positive direction; when the symbol is negative, X axis infeeds
along with the negative direction), type I setting does not desire
；
R( Δ d)
：
Tool-retraction value along X axis in the rough-turning
，
its range:±99999999×least
input increment(unit ： mm/inch ， diameter ， without sign symbol) ， type I setting does
not desire
；
K( Δ u)
：
Finish-turning allowance along X axis, its range:-99999.999~99999.999(IS_B)
/-9999.9999~9999.9999(IS_C) (unit
：
mm/inch
，
diameter
，
without sign symbol), the
last rough-turning path offsets related to the X axis coordinate of the finish-turning,
type I setting does not desire
；
L(d)
：
Cutting times
（
without including the finish-turning path
）
,its range:1~9999 (unit
：
times), L5 means that the rough cutting cycle is completed for 5 times, the 6
th
times is finish
turning cycle. If the cutting times is 1, the system will complete the rough cutting cycle based
upon 2 times. Type I setting does not desire.
Code path explanation: (Type II)
1) X axis rapidly moves to cycle start G from start point F
；
2) X axis is performed the feedrate to An point, in-feed value is Δ d ＋ n× Δ u, which is
performed the circular interpolation along with the path of the An
－
>Bn
－
>Cn
－
>Dn
(Note: n is the n
th
times cycle, the resolution n=1, 2, 3…)
3) X axis rapidly retreats to point E along Dn
－
>E path
4) Tool returns to the cycle start G along E
－
>G path (Note: X, Z and C axes are
returned to the cycle start);
5) Repeated steps 2), till to the machining allowance along X axis is 0;
Fig.3-36
Note
：
1) G7.1 is non-modal ；