Method and equipment for making a spring
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United States of America Patent
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Mar 17, 2015
Grant Date -
Sep 1, 2011
app pub date -
Oct 26, 2009
filing date -
Nov 5, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A method for making a variable pitch spring (9), in which a spring wire (1) is bent using bending lugs (5, 6) so as to impart a spiral configuration thereto, a gap is formed between the turns by placing, between the turns being formed, the beveled side of a rotary disc (2) having a rotation synchronized with the spring wire supply, the disc (2) having a beveled profile that varies along the periphery of the disc, and the spring wire is cut (3) at the end of the formation of each spring.
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