The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1976
Filed:
Oct. 22, 1974
Tuyoshi Tamesui, Okazaki, JA;
Tetsuo Matsuzaki, Nishio, JA;
Toyoda Koki Kabushiki Kaisha, , JA;
Abstract
An apparatus for controlling the timing for slowing down the feed of a grinding wheel on a grinding machine against work to enable the wheel to effect a finish cut on the work, in relation to a gradual reduction in the cutting performance of the wheel. The apparatus essentially comprises means for moving the grinding wheel reciprocally relative to the work at a variable speed; a device for measuring the diameter of the work at a plurality of different diametral positions thereof during each cycle of grinding operation and producing a corresponding number of signals each at one of those diametral positions; and an electric circuit adapted to cause the slowing down of the wheel feed upon receiving one of the signals except the last one from the measuring device, while comparing with a predetermined value the time elapsed or the number of pulses counted between receipt of the one signal and the last signal during one cycle of grinding operation and causing the slowing down of the wheel feed during another cycle of grinding operation upon receiving another signal that is produced earlier than the one signal if the above time or number of pulses is exceeded by the predetermined value.