发明名称 |
Process and device for removing punch rivets from a workpiece |
摘要 |
The invention relates to a process and a device for removing punch rivets (23) set in a workpiece (12,13), which are tubular and axisymmetric in design. Upon setting of the punch rivet (23) a punched-out piece (21) remaining therein is removed by a tool (18) and thereafter a threaded mandrel (20) is screwed into the punch rivet (23) with simultaneous formation of a substantially continuous distinctive thread. Upon its subsequent withdrawal counter to the pressure of an abutment (22) resting on the workpiece (12,13) the threaded mandrel (20) withdraws the punch rivet (23) from the workpiece (12,13). <IMAGE> |
申请公布号 |
EP1136155(A3) |
申请公布日期 |
2002.02.06 |
申请号 |
EP20010302304 |
申请日期 |
2001.03.13 |
申请人 |
EMHART INC. |
发明人 |
OPPER, REINHOLD;MAUER, DIETER |
分类号 |
B25B27/067;B21J15/02;B21J15/50;B25B27/073 |
主分类号 |
B25B27/067 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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