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:
Jun. 22, 1976
Filed:
Sep. 27, 1974
Sadao Moritomo, Ichikawa, JA;
Seiko Seiki Kabushiki Kaisha, , JA;
Abstract
A grinding apparatus has an in-process sizing device to measure a size of a workpiece under grinding, and a detecting device to measure the location of the infeed table on which a grinding wheel is mounted to grind the workpiece. The outputs of the in-process sizing device and of the detecting device are so calculated that the amount of residual stock-removal on the workpiece is computed out as the difference between in-feed amount of the wheel head and actual stock-removal amount on the workpiece which is continuously measured by the in-process sizing device. The computed residual stock-removal is compared with a pre-set value which is selected from a series of pre-set values for various grinding steps such as a rough grinding step or a fine grinding step, in response to the workpiece size measured by the in-process sizing device. In-feed speed of the infeed table to the workpiece is so controlled by the output of a comparator which executes the above comparing process that the output value is intended to become zero.