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. 15, 2022
Filed:
Aug. 09, 2020
Southwest Technology and Engineering Research Institute, Chongqing, CN;
Harbin Institute of Technology AT Weihai, Shandong, CN;
Qiang Chen, Chongqing, CN;
Gang Chen, Shandong, CN;
Xusheng Chang, Shandong, CN;
Hongming Zhang, Shandong, CN;
Dayu Shu, Chongqing, CN;
Hong Zhan, Chongqing, CN;
Lin Xiang, Chongqing, CN;
Yunliang Xiang, Chongqing, CN;
Yan Tang, Chongqing, CN;
Southwest Technology and Engineering Research Institute, Chongqing, CN;
Harbin Institute of Technology at Weihai, Weihai, CN;
Abstract
A fine blanking device and method for forming a friction plate with friction material layers. The fine blanking device includes an upper die, a lower die, a guide mechanism, a punch and a counter punch. Upper and lower blank holders are respectively provided at outer circumferences of the punch and the counter punch. The upper and lower blank holders are respectively provided with a buffer mechanism. Friction material powders are sintered on both sides of the base sheet. The friction material layers are trimmed and planished by hot pressing. The base sheet with the friction material layers is fixed by the upper blank holder and the lower blank holder. A tooth profile with an absolute shear fractural surface is formed. The fixing indentation of the V-shaped structure of the friction material layers is cut off for obtaining a finished friction plate product with the friction material layers.