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:
Apr. 24, 2012
Filed:
May. 03, 2009
Yasuo Tomita, Kyotango, JP;
Takahiro Azuma, Kyotango, JP;
Yasuo Tomita, Kyotango, JP;
Takahiro Azuma, Kyotango, JP;
Nissin Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A grindstone contact sensing technology capable of sensing the contact position of the honing grindstone with the inner circumference of the work at high precision. A servo motor for driving the spindle rotation, and a servo motor for driving the depth of cut are provided and used respectively as spindle rotation drive source for rotating and driving the rotary spindle having the honing tool and depth-of-cut drive source for moving the honing grindstone at a specified depth of cut, and the contact position of the honing grindstone with the inner circumference of the work is sensed from various electrical information (rotating speed, torque, current value, stagnant pulses, etc.) obtained from the operations of both the servo motors.