Method for producing an end lug of a spring member formed of a strand of wire, and apparatus for manufacturing same
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United States of America Patent
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Feb 26, 2008
Grant Date -
Sep 22, 2005
app pub date -
Mar 18, 2005
filing date -
Mar 18, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for producing an end lug of a spring member formed of a strand of wire, the strand of wire is initially gripped by two clamping jaws or a pair of tongs, held between said clamping jaws and, subsequently, at a predetermined distance behind the gripping tongs, while forming a rear wire segment protruding behind the spring element, is severed. In this regard, a shaping jaw conforming to the shape of the lug is employed as the one clamping jaw of the gripping tongs, around which the wire segment is bent by means of a shaping pin that can be inserted directly behind the other clamping jaw perpendicular to the longitudinal center line of the wire segment over the latter to form the lug. The relative movements between the shaping pin and the shaping jaw required for this purpose are generated by means of program-controlled movements of the gripping tongs and/or shaping pin.
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