14. FUNCTIONS TO SIMPLIFY
This function enables continuous dressing.
When G75, G77, G78, or G79 is specified, grinding wheel cutting and
dresser cutting are compensated continuously according to the amount of
continuous dressing during grinding.
Specify an offset number (grinding–wheel wear compensation number)
at address L in the block containing G75. The compensation amount set
in the offset memory area corresponding to the specified number is used
as the amount of dressing.
Up to 400 offset numbers (L1 to L400) can be specified. Compensation
amounts must be set beforehand in offset memory corresponding to offset
numbers from the CRT/MDI panel.
When L is omitted or L0 is specified in a surface grinding canned cycle
block, compensation is not performed.
Compensation is performed for every grinding operation (every
movement along the X–axis) in the operation sequences of a canned
grinding cycle. While the tool moves along the X–axis, compensation is
performed along the Y–axis (grinding wheel cutting) and the V–axis
(dresser cutting) for simultaneous three–axis interpolation.
The travel distance (compensation amount) along the Y–axis is the same
as specified dressing amount, and the travel distance along the V–axis is
twice as long (diameter).