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:
Mar. 19, 2024
Filed:
Aug. 19, 2020
Applicant:
Nsk Ltd., Tokyo, JP;
Inventor:
Nobuyuki Hagiwara, Fujisawa, JP;
Assignee:
NSK LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B30B 1/32 (2006.01); B21J 5/02 (2006.01); B21J 5/08 (2006.01); B21J 5/10 (2006.01); B30B 1/06 (2006.01); B30B 15/00 (2006.01);
U.S. Cl.
CPC ...
B30B 1/32 (2013.01); B21J 5/02 (2013.01); B21J 5/08 (2013.01); B21J 5/10 (2013.01); B30B 1/06 (2013.01); B30B 15/00 (2013.01);
Abstract
A method of performing pressing on a workpiece using a press machine. The pressing method includes: performing pressing on the workpiece between a lower die and an upper die by causing the upper die to approach the lower die by using the hydraulic cylinder in a state in which the workpiece is disposed between the lower die and the upper die, and performing the pressing on the workpiece between the lower die and the upper die, in a state in which a shape of each of the frame, the lower die and the upper die has a rotationally symmetric shape about the reference axis and in which the workpiece center axis coincides with the reference axis.