B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
341/65, 51/99
B24B 49/02 (2006.01) B24B 49/00 (2006.01)
Patent
CA 1141007
ABSTRACT OF THE DISCLOSURE A method of controlling infeed in simultaneously grinding the inner and outer diameters of an annular workpiece with a multiple infeed speed. The method comprises, while supervising the amounts of infeed of the internal and external grind infeeding heads, the finish dimensions of the inner and outer diameters of the work- piece, the infeed positions of the internal and external grind infeed- ing heads, and the time when inner and outer diameter dimension signals are sent, starting the simultaneous rough grinding of the inner and outer diameters at rough grinding infeed speeds so deter- mined as to simultaneously reach predetermined allowances for precision grinding, completing the rough grinding of the inner dia- meter in response to a signal indicating the completion of the rough grinding of the outer diameter, and starting precision grinding at precision grinding infeed speeds so determined that when the precision grinding of one diameter is completed, the other diameter has a predetermined allowance for precision grinding left.
324547
Nakajima Kauzyoshi
Onoda Makoto
Ntn Toyo Bearing Company Limited
Ridout & Maybee Llp
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