Application Number: 00125946
Application Date: 2000.09.01
Publication Number: 1309000
Publication Date: 2001.08.22
Priority Information:
International: B21D21/00;B21D35/00;B23G7/00;E21D21/00
Applicant(s) Name: Xishan Coal-Electricity (Group) Co., Ltd.
Address:
Inventor(s) Name: Qin Binqing;Wang Weihu;Luo Husheng
Patent Agency Code: 14100
Patent Agent: zhang lezhong
Abstract A method for machining the rod body of anchor bolt features that the raw material of rod body is chosen according to the elongation percentage and strength requirement of anchor bolt to rod body and only the tail part of rod body is surficially cold-mechined. A special reducing equipment has hydraulic reducing unit with squeeze die, slide limiter for preventing deformation of rod body and fixtures for discontinuously clamping the surface of it and annular hydraulic couples. Its advantages are simple and reasonable structure and high anchoring force of rod body.