System for adjusting load characteristics of conical spring

Abstract

Object of the Invention To provide a load characteristic adjustment system for use with a linear-spring forming apparatus for forming a conic spring, the system capable of adjusting the load characteristic of a conic spring formed by the apparatus in a simple manner and relieving physical burden of a worker setting up the apparatus Means for Solving Problems The load characteristics adjustment system has a linear material feeder for feeding a linear material; at least one spring forming tool arranged to face the linear material feeder and abutted against the linear material to coil the linear material; spiraling means for spiraling the linear material into a spiral; and coil diameter varying means for changing the diameter of the coiled linear material The load characteristic adjustment system controls the linear material feeder so as to feed the linear material at a regulated constant acceleration to adjust the load characteristic of the conical spring formed.

Description

technical field [0001] The present invention relates to a load of a conical coil spring formed by abutting and winding a wire fed forward from a wire feeding unit serving as a wire guide in a wire spring forming device with a forming tool disposed in front of the wire spring. Character adjustment system. Background technique [0002] As an apparatus for forming a wire spring by winding a wire rod, an apparatus disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2004-237352 ) is known. According to this device, the wire is sent from the sleeve shaft (wire delivery unit) to the forming table by the wire pressure feeding mechanism having the pinch roller, and formed into a coil that advances toward the wire spring forming table from a direction perpendicular to the axis of the wire. The tools are butted and coiled to form a coil. [0003] In addition, the diameter of the formed coil varies depending on the distance between the coil forming tool and the quill axis. ...

AI Technical Summary

Problems solved by technology

[0004] However, in the wire used as the raw material of the conical coil spring, due to differences in manufacturing batches, etc., there are differences in characteristics such as slight deviations in the wire diameter.

Therefore, even if a tapered coil spring of the same shape is formed by using wire materials with subtly different characteristics, the finished tapered coil spring often has deviations in the obtained load characteristics, and does not have the load characteristics within the predetermined range of design.

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