| 摘要 |
PROBLEM TO BE SOLVED: To allow even a worker who has no knowledge on NC program to improve machining efficiency by correcting overlapping width so as to keep number of cuttings at specific number when end width is shorter than a predetermined value. SOLUTION: Whether a grinding wheel width W is longer than a machining width F is recognized (step S500), if the grinding wheel width W is shorter than the machining width F, an integer n (number of displacements + 1) that is number at which grinding tools are arranged in the machining width F in the width direction with a predetermined overlapping widthαand an end widthγthat is shorter than a length (W-α) remaining un-machined and is longer than zero, based on the equation F=n(W-α)+γ, andαandγare compared with each other (step S530). Whenαis smaller thanγ, N is set to n+1 (step S550) and a first cutting position Zi for i=0 is derived form Zi=-'+1(W-α) (step S570).
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