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. 09, 2021
Filed:
Jun. 08, 2016
Applicant:
Jun Zhou, Shanghai, CN;
Inventors:
Jun Zhou, Shanghai, CN;
Yongliang Zhang, Shanghai, CN;
Jianming Yang, Shanghai, CN;
Minjun Yang, Shanghai, CN;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B21H 3/04 (2006.01); B21H 3/02 (2006.01);
U.S. Cl.
CPC ...
B21H 3/042 (2013.01); B21H 3/02 (2013.01); B21H 3/04 (2013.01);
Abstract
Provided is a method for performing an external pipe thread process on a hollow blank by at least twice rolling, wherein amount of rolling wheels in a rolling wheel set, used in any two back-to-back rolling processes in a processing sequence, are different in parity. Further provided are various roll-processing modules and corresponding rolling apparatuses, achieving the above processing method and having a simple structure, portability and practicality. A hollow blank is not liable to deform when performing an external pipe thread rolling process thereon, thereby improving a processing yield.