GSK GSK980TDc, Руководство пользователя

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Chapter 3 G Commands
113
Ⅰ
Progra
mming
Fig. 3-36 G75 path
Execution process: (Fig. 3-36)
①
Radial (X) cutting feed
△
i from the starting point of radial cutting cycle, feed in X
negative direction when the coordinates of cutting end point is less than that of
starting point in X direction, otherwise, feed in X positive direction;
②
Radial(X) rapid tool retraction e and its direction is opposite to the feed direction of
①
;
③ X executes the cutting feed ( Δ k+e) again, the end point of cutting feed is still in it
between starting point A
n
of radial cutting cycle and end point of radial tool infeed, X
executes the cutting feed ( Δ i+e) again and executes
②
; after X cutting feed ( Δ i+e) is
executed again, the end point of X cutting feed is on B
n
or is not on it between A
n
and
B
n
cutting feed to B
n
and then execute ○
4
;
④
Axial(Z) rapid tool retraction
△
d to C
n
, when Z coordinate of B
f
(cutting end point) is
less than that of A (starting point), retract tool in Z positive, otherwise, retract tool in Z
negative direction;
⑤
Radial (Z) rapid retract tool to Dn, No. n radial cutting cycle is completed. The current
radial cutting cycle is not the last one, execute ⑥ ; if it is the previous one before the
last radial cutting cycle, execute
⑦
;
⑥
Axial(X) rapid tool infeed, and it direction is opposite to
④
retract tool. If the end point
of tool infeed is still on it between A and A
f
(starting point of last radial cutting cycle)
after Z tool infeed (
△
d+
△
k), i.e. D
n
→ A
n+1
and then execute
①
(start the next radial
cutting cycle); if the end point of tool infeed is not on it between D
n
and A
f
after Z tool
infeed (
△
d+
△
k), rapidly traverse to A
f
and execute
①
to start the first radial cutting
cycle;
⑦ Z rapidly traverses to A, and G75 is completed.