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:
Aug. 20, 1996
Filed:
Aug. 23, 1994
Hitoshi Ohmori, Tokyo, JP;
Rikagaku Kenkyusho, Saitama-ken, JP;
Abstract
An apparatus for grinding a workpiece while electrolytically dressing an electrically conductive grinding wheel. The apparatus has an electrically conductive grinding wheel with a contact surface for contacting the workpiece, an electrode opposed to the grinding wheel and spaced a distance therefrom, a nozzle for supplying conductive fluid between the grinding wheel and the electrode, and a device for applying a voltage between the grinding wheel and the electrode. An eddy current sensor is arranged in proximity to the working surface of the grinding wheel for measuring the position of the grinding wheel in a non-contact manner. A grinding wheel controlling device is provided for controlling the position of the grinding wheel based on the values measured by the eddy current sensor. The apparatus can measure the dimensions of the grinding wheel during its grinding operation without being influenced by the grinding fluid and the nonconductive film formed on the wheel and can therefore efficiently carry out high accuracy grinding without a high degree of operator skill.