HUST CNC H6D-T - Page 100

HUST CNC H6D-T Manual
3 - 38
Details:
When using incremental coordinates, the signs (+/-) of U and W are determined by the
tool's direction of movement. If the direction is positive, the increment of U and W is
(+), and vice versa. R value is as Fig. 3-26.
Fig. 3-26 G90 Cutting Path and Direction
3. Thread Cutting Fixed Cycle, G92
The advantage of the G92 block is that it functions as four G32 blocks.
Format:
G92 X(U) ___ Z(W) ___ I___ K___ L___ Q ___ F ___ E ___
X, Z : End point C in absolute coordinates
U, W : End point C in incremental coordinates
F : Thread pitch (metric)
E : Number of threads per inch range from 1.0-100.0. This setting shall
not appear when an F setting is given.
I : The axial travel length on X-axis for ending of the thread cutting. If K
0, “I” will be omitted and regarded as 2*K (i.e. ending of the thread
1. U-,W-,R-
W
U/2
R
2. U+,W-,R+
W
U/2
R
3. U-,W-,R+
U/2
And |R| < |U/2|
4. U+,W-,R-
R
U/2
And |R| < |U/2|
X
Z