GSK 988T, Руководство пользователя

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GSK988T Turning CNC System User Manual
98
Ⅰ
Programming
Command explanations:
Starting point
(end point) Position before block runs and behind blocks run, defined by A point.
End point of
thread End point of thread cutting defined by X(U) Z(W) ,.The tool will not
reach the point in cutting if there is the thread run-out path.
Starting point
of thread Its absolute coordinates is the same that of A point and the different value
of X absolute coordinates between C and D is i(thread taper with radius
value). The tool cannot reach C point in cutting when the defined angle of
thread is not 0°.
Reference
position of
thread cutting
depth
Its absolute coordinates is the same that of A point and the different value
of X absolute coordinate between B and C is k(thread taper with radius
value).The cutting depth of thread at B point is 0 which is the reference
position used for counting each thread cutting depth by the system.
Thread cutting
depth
It is the cutting depth for each thread cutting cycle. It is the different value
(radius value, without signs) of X absolute coordinate between B and
intersection of reversal extension line for each thread cutting path and
straight line BC. The cutting depth for each roughing is
n
×
△
d, n is the
current roughing cycle times, △ d is the thread cutting depth of first
roughing.
Travel of
thread cutting Different value between the current thread current depth and the previous
one:(
1 n n
− −
) ×
△
d
End point of
tool retraction
It is the end position of radial (X) tool retraction after the thread cutting
in each thread roughing, finishing cycle is completed, is defined by E
point.
| t replacemen X |
| t replacemen Z |
2
a
tg
=
a
：
thread angle
Thread cut-in
point
Actual start thread cutting point in each thread roughing cycle and finishing
cycle. It is defined by (n is the cutting cycle times), B
n
is the first thread
roughing cut-in point, B
1
is the last thread roughing cut-in point, B
e
is the
thread finishing cut-in point. B
n
is the X, Z displacement formula for B
point.
X X absolute coordinate of thread end point.
U Difference value of X absolute coordinate between thread end point and
starting point.
Z Z absolute coordinate of thread end point.
W Different value of Z absolute coordinate between thread end point and
starting point.
P(m)
Times of thread finishing: 00
～
99 (unit: times) with 2-digit digital. It is valid
after m command value is executed, and the value of system parameter
No.5142 is rewritten to m. The value of system parameter No.5142 is
regarded as finishing times when m is not input. The thread is finished
according to the programmed thread path, the first finishing cutting travel is
d and the following one is 0.