Coil spring processing device
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United States of America Patent
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-
Oct 20, 2020
Grant Date -
Dec 13, 2018
app pub date -
Aug 21, 2018
filing date -
Feb 23, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.
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