IMPROVEMENTS IN OR RELATING TO SELF-PIERCING RIVET

专利名称：IMPROVEMENTS IN OR RELATING TO SELF-PIERCING RIVETING

发明人：COTTERILL, Alf,BLACKET, Stuart

Edmond,SINGH, Sumanjit

申请号：EP94902918.5申请日：19931220公开号：EP0675774B2公开日：20040512

摘要：A method of riveting comprises inserting a self-piercing rivet (1) into sheetmaterial (5, 6) without full penetration such that the deformed end of the rivet (1)remains encapsulated by an upset annulus of the sheet material. The sheet material (5, 6)is clamped with a substantial force during the riveting operation in the region around therivet insertion location. The clamping force is maintained constant throughout at leastthe major part of the riveting operation and has a magnitude of up to 1.5 tonnes. Ariveting machine for carrying out the method comprises a punch (10), means for feedingrivets successively to the punch (10) for insertion into sheet material (5, 6) to be riveted, adie (15) aligned with the punch (10) for deforming the rivet (1) inserted thereby, andclamping means (11) for clamping the sheet material (5, 6) with a substantial force duringthe riveting operation in the region around the rivet insertion location.

申请人：HENROB LTD

地址：GB

国籍：GB

代理机构：Mock, Hans

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