GSK GSK988TA, Manual

Page: 113 / 531

Chapter 2 G Commands
95
Ⅰ
Programming
value is modified, the cycle operation cannot be executed;
2. ∆ d and e are specified by the same address R and whether there are X
（
U
）
or not in blocks can
distinguish them;
3. The tool can stop in Auto mode and traverse in Manual mode when G75 is executed, but the
tool must return to the position before executing in Manual mode when G75 is executed again,
otherwise the following path will be wrong;
4. When the system is executing the single block, the program pauses after the system has
executed end point of current path;
5. R
（
∆ d
）
must be omitted in grooving, and so there is no travel of tool retraction when the tool
cuts to radial cutting end point.
Relevant definitions:
Start point of
radial cutting
cycle
Starting position of axial tool infeed for each radial cutting cycle, defined by
A
n
(n=1,2,3……),X coordinate of A
n
is the same that of start point A, the different
value of X coordinate between A
n
and A
n-1
is ∆ k. The start point A
1
of the first
radial cutting cycle is the same as the start point A and Z start point (A
f
) of the last
axial cutting cycle is the same that of cutting end point
End point of
radial tool
infeed
Starting position of radial tool infeed for each radial cutting cycle, defined by
B
n
(n=1,2,3……), X coordinates of B
n
is the same that of cutting end point, Z
coordinates of B
n
is the same that of A
n
, and the end point (B
f
) of the last radial tool
infeed is the same that of cutting end point
End point of
axial tool
retraction
End position of axial tool infeed(travel of tool infeed is ∆ d) after each axial cutting
cycle reaches the end point of axial tool infeed, defining with C
n
(n=1,2,3……), X
coordinate of C
n
is the same that of cutting end point, and the different value of Z
coordinate between C
n
and A
n
is ∆ d
End point of
radial
cutting cycle
End position of radial tool retraction from the end point of axial tool retraction,
defined by D
n
(n=1,2,3……), X coordinate of D
n
is the same that of start point, Z
coordinates of D
n
is the same that of C
n
(the different value of Z coordinate between
it and A
n
is ∆ d)
Cutting end
point
It is defined by X （ U ） Z （ W ） ,and is defined with B
f
of the last radial tool
infeed.
R （ e ）
It is the travel of tool retraction after each radial(X) tool infeed without sign symbols
and its value range is referred to the following table. The code value is reserved and
the value of system parameter NO.5139 is rewritten after R
（ e ） is executed. The
value of NO.5139 is regarded as the travel of tool retraction when R
（
e
）
is not input
X absolute coordinate value of the 2
nd
axis (X in ZX plane) in path diagram B point
U
Relative movement amount of the 2
nd
(U in ZX plane) in path diagram A → B plane.
(for G code system A. X_,Z_ is executed for other conditions)
Z absolute coordinate value of the 1
st
axis (Z in ZX plane) in path diagram C point
W
Relative movement amount of the 2
nd
(W in ZX plane) in path diagram A → C plane.
(for G code system A. X_,Z_ is executed for other conditions)
P
（
∆ i
）
Travel (radius value) of X discontinuous tool infeed without sign symbols in radial