GSK GSK980TDc, Руководство пользователя

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GSK980TDc Turning CNC System User Manual
126
Ⅰ
Progra
mming
Fig. 3-44
Z W
④
Z axis
Thread
run-out width
A
①
②
③
B
C
D
X/2
Rapid traverse
Thread cutting
A:starting point(End point)
B:starting point of cutting
C:End point of cutting
U/2
Fig. 3-45
The system can machine one thread with many tool infeed in G92, but cannot do continuous two
thread and end face thread. Definition of thread pitch in G92 is the same that of G32, and a pitch is
defined that it is a moving distance of long axis(X in radius) when the spindle rotates one rev.
Pitch of taper thread is defined that it is a moving distance of long axis(X in radius). When
absolute value of Z coordinate difference between B point and C point is more than that of X (in
radius), Z is long axis; and vice versa.
Cycle process: straight thread as Fig.3-44 and taper thread as Fig.3-45.
①
X traverses from starting point to cutting starting point;
② Thread interpolates (linear interpolation) from the cutting starting point to cutting end point;
③
X retracts the tool at the cutting feedrate (opposite direction to the above-mentioned
①
), and
return to the position which X absolute coordinate and the starting point are the same;
④ Z rapidly traverses to return to the starting point and the cycle is completed.