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, 2013
Filed:
Aug. 01, 2008
Yoshikoto Yanase, Ritto, JP;
Masashi Ochi, Ritto, JP;
Yoshikoto Yanase, Ritto, JP;
Masashi Ochi, Ritto, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
To provide a barrel worm-shaped tool capable of grinding processing in high precision, while maintaining the reduction of heavy load during the processing and partial wear. For this purpose, a barrel worm-shaped tool that is used in the gear machining of an internal gear () is formed with its diameter gradually increasing from the two end portions in the axial direction thereof towards the middle portion thereof. The barrel worm-shaped tool () is formed so that edge shapes () of the grinding wheel () becomes gradually smaller from the edge shape () located in the middle portion, in the axial direction of the barrel worm-shaped tool () towards the edge shape () located in the two end portions, in the axial direction, of the barrel worm-shaped tool () in accordance with the amount of machining allowance for the internal gear ().