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:
Feb. 26, 1985
Filed:
Jan. 18, 1983
Takao Yoneda, Toyoake, JP;
Yasuji Sakakibara, Hekinan, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Abstract
A numerical controller for an angular slide grinding machine capable of controlling movement of a work table with a dressing tool in a machine coordinate system in a dressing operation and a workpiece coordinate system in a grinding operation. When the work table is initially moved to such a position as to bring the dressing tool into slight contact with an end surface of a grinding wheel carried by a wheel head, the numerical controller calculates and stores a dressing reference value indicating a positional relation between a fixed machine origination position and the dressing tool in the machine coordinate system. Prior to grinding operations for each workpiece, the work table is moved under the control of a sizing device to such a position as to present a reference surface of the workpiece to a predetermined positional relation with the original machine position. The numerical controller at this time calculates and stores a coordinate difference between the machine coordinate system and the workpiece coordinate system. When a dressing operation is needed following a grinding operation, the numerical controller calculates a dressing start position or coordinate value of the work table in the machine coordinate system based upon the dressing reference value previously calculated and stored and a dressing start coordinate value of the wheel head indicated by a present position counter for the wheel head and then, converts the calculated dressing start coordinate value into a corresponding coordinate value in the workpiece coordinate system based upon the coordinate difference previously calculated and stored.