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:
Nov. 26, 2019
Filed:
May. 24, 2017
Shuichi Nowatari, Kanagawa, JP;
Shuichi Nowatari, Kanagawa, JP;
Other;
Abstract
A production method for a ring-shaped part is provided with: an inner cutting step for reciprocating a first cutting blade in the radial direction Dfrom a state of contact with the center of the thickness of one endof a rotating cylindrical blankand moving toward the other endin the axial direction Dto form a semicircular track while cutting the inner circumferential R-side of the cylindrical blank; an outer cutting step before, after or simultaneously with the inner cutting step for reciprocating a second cutting blade in the radial direction Dfrom a state of contact with the center of the thickness of the one endof the rotating cylindrical blankand moving toward the other endin the axial direction Dto form a semicircular track while cutting the outer circumferential R-side of the cylindrical blank; and a separation step after the inner cutting step and the outer cutting step for cutting the portionof the cylindrical blank, the inner circumferential R-side and the outer circumferential R-side of which have been cut, from the remainderof the cylindrical blankto obtain a ring-shaped partwith a roughly circular cross-section.