METHOD, MODULE AND APPARATUS FOR ROLL-PROCESSING EXTERNAL PIPE THREAD, AND EXTERNAL PIPE THREAD PRODUCTION LINE

Title:

METHOD, MODULE AND APPARATUS FOR ROLL-PROCESSING EXTERNAL PIPE THREAD, AND EXTERNAL PIPE THREAD PRODUCTION LINE

Document Type and Number:

WIPO Patent Application WO/2016/197960

Kind Code:

A1

Abstract:

Provided is a method for performing an external pipe thread process on a hollow blank by at least twice rolling, wherein amounts of rolling wheels (81, 82) 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.

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Inventors:

ZHOU JUN (CN)
ZHANG YONGLIANG (CN)
YANG JIANMING (CN)
YANG MINJUN (CN)

Application Number:

PCT/CN2016/085368

Publication Date:

December 15, 2016

Filing Date:

June 08, 2016

Export Citation:

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Assignee:

ZHOU JUN (CN)

International Classes:

B21H3/04

Foreign References:

CN1555938A	2004-12-22
CN102423789A	2012-04-25
CN103521666A	2014-01-22
CN204276766U	2015-04-22
CN105121052A	2015-12-02
JPS6027423A	1985-02-12
US4712407A	1987-12-15
CN1251820C	2006-04-19
CN2582780Y	2003-10-29
SU782937A1	1980-11-30

Other References: