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GSK980TDi Turning CNC System User Manual
104
Ⅰ
Programming
3.21.2 Radial Cutting Cycle G94
Command format:
G94 X(U) __ Z(W) __ F__; (face cutting)
G94 X(U) __ Z(W) __ R__ F__; (taper face cutting)
Command function:
From starting point,
the cutting cycle of cylindrical surface or taper surface
is completed by radial feeding(X) and axial (Z or X and Z) cutting.
Command specifications:
G94 is modal;
Starting point of cutting: starting position of linear interpolation (cutting feed). Unit: mm;
End point of cutting: end position of linear interpolation (cutting feed). Unit: mm;
X: X absolute coordinate of end point of cutting. Unit: mm;
U: Different value of absolute coordinate from end point to starting point of cutting in X
direction .Unit: mm;
Z: Z absolute coordinates of end point of cutting, Unit: mm;
W: Different value of X absolute coordinate from end point to starting point of cutting, Unit:
mm;
R: Different value(R value) of X absolute coordinates from end point to starting point of
cutting. When the sign of R is not the same as that of U, R,
│
R
│≤│
W
│
.
Radial linear cutting is shown in Fig. 3-21, radial taper cutting is as Fig. 3-60.
Ranges of X, U, Z, W
，
R are referred to Table 1-2 of Section 1.4.1, unit: mm/inch.
Cycle process:
①
Z rapidly traverses from starting point to cutting starting point;
②
Cutting feed (linear interpolation) from the cutting starting point to cutting end point;
③
Z executes the tool retraction at the cutting feedrate (opposite direction to the
above-mentioned
①
), and returns to the position which the absolute coordinates and the
starting point are the same;
④
The tool rapidly traverses to return to the starting point and the cycle is completed.
A
B
C
D
Z
W
U/2
X/2
X axis
Z axis
Rapid traverse
Cutting feed
A:Starting point(End point)
B:Cutting starting point
C:Cutting end point
1(R)
2(F)
3(F)
4(R)
Fig. 3-59
