GSK GSK980TDc, Manual

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GSK980TDc Turning CNC System User Manual
130
Ⅰ
Progra
mming
R(i): It is thread taper and is the different value of X absolute coordinate between thread starting
point and end point, rang: -99999.999~99999.999(IS_B ） /-9999.9999~9999.9999(IS_C) (unit: ：
mm/inch, radius value). The system defaults R(i)=0(straight thread) when R(i) is not input;
P(k): Depth of thread tooth, the total cutting depth of thread, range: 1 ～ 99999999(unit: least input
increment, radius value, without sign symbols). The system alarms when P(k) is not input;
Q( d):
△
Depth of the 1
st
thread cutting, range: 1 ～ 99999999 unit: least input increment, radius
value, without sign symbols). The system alarms when d
△
is not input;
F: metric thread pitch, its range is referred to Table 1-2;
I: thread teeth per inch for inch thread, its range is referred to Table 1-2.
J
：
movement amount (run-out amount) (unit: mm/inch, without direction) in the short axis when
thread run-out; when the short axis is X, its value is designated by radius and is simple
parameter;
K
：
movement amount (run-out amount) (unit: mm/inch, without direction) in the long axis when
thread run-out; when the long axis is X, its value is designated by radius and is simple
parameter.
Note: J, K are not compiled in G76, its thread run-out method is the same that of the previous, i.e. the thread
run-out is executed according to P® or No.19; when J or, K, or J, K are compiled, the thread run-out
method is the same those of G32, G92.
X axis
B1
Bn
Bf
Z
W
X/2
Z axis
Rapid traverse
Thread cutting
A:Starting point（End point）
B:Reference point of thread
cutting depth
C:Starting point of thread cutting
D:End point of thread cutting
Be
r
i
D
U/2
C
a/2
A
△d
△d√n
k
d
E
Fig. 3-48(a)
Cut-in method as follows: Fig. 3-48(b)
：