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. 27, 2019
Filed:
Dec. 12, 2016
Applicant:
Mitsui High-tec, Inc., Kitakyushu-shi, Fukuoka, JP;
Inventors:
Takahiro Shimizu, Fukuoka, JP;
Hironosuke Taniishi, Fukuoka, JP;
Assignee:
MITSUI HIGH-TEC, INC., Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P 19/00 (2006.01); B21D 28/14 (2006.01); H02K 15/02 (2006.01);
U.S. Cl.
CPC ...
B21D 28/14 (2013.01); H02K 15/022 (2013.01); Y10T 29/49012 (2015.01); Y10T 29/53161 (2015.01); Y10T 83/6484 (2015.04);
Abstract
A blanking die apparatus includes multiple machining stations having respective cutting tools operated simultaneously to perform predetermined blanking operations on a belt-shaped workpiece fed progressively in a longitudinal direction and finally to perform a contour blanking operation on the workpiece, thereby forming core pieces used for manufacturing a laminated iron core, and an auxiliary cutting tool that forms a disposal hole by partly blanking a scrap forming area of the workpiece simultaneously with the operations of the cutting tools of the machining stations.