14. FUNCTIONS TO SIMPLIFY
G92X(U)__ Z(W)__ F__ ; Lead (L) is specified.
F…… Specified by
(The chamfered angle in the left figure
is 45 degrees or less because of the
delay in the servo system.
Detailed chamfered thread
Fig. 14.1.2 (a) Straight Thread Cutting
In incremental programming, the sign of numbers following addresses U
and W depends on the direction of paths 1 and 2. That is , if the direction
of path 1 is the negative along the X axis, the value of U is negative.
The range of thread leads, limitation of spindle speed, etc. are the same
as in G32 (thread cutting). Thread chamfering can be performed in this
thread cutting cycle. A signal from the machine tool, initiates thread
chamfering. The chamfering distance is specified in a range from 0.1L
to 12.7L in 0.1L increments by parameter (No. 5130). (In the above
expression, L is the thread lead.)
In the single block mode, operations 1, 2, 3, and 4 are performed by
pressing cycle start button once.
Thread Cutting Cycle