Sleeve coil spring for damper and manufacturing method thereof

Abstract

The invention relates to the field of coil spring production, and provides a manufacturing method of a sleeve coil spring for a damper. The manufacturing method comprises the following steps of: testing and analyzing the material of the original imported sleeve coil springs, to select the raw material for developing coil springs; based on the analysis on the structure of the sleeve coil springs, determining the shape and size of a blank; bending and curling the blank to be round by means of a bending mould; carrying out heat treatment on obtained spring strips; and assembling the spring strips into sleeve coil springs by means of a assembly mould. According to the invention, a spring strip bending mould with high dimensional accuracy and good surface quality is used for carrying out bending treatment on the spring strips in the method for bending treatment of the spring strips, which ensures the concentricity and curvature of coil springs of different thickness; and an extrusion-assembly mould is utilized for the assembly of the spring strips, which ensures rational assembly intervals between each of the spring strips and the accuracy of coil spring assembly, thus filling a gap in the diesel engine industry of China, improving the domestic capability of researching and developing coil springs for high-performance diesel dampers, and increasing the production and preparation level of sleeve coil springs of dampers.

Description

technical field [0001] The invention belongs to the field of coil spring manufacturing, in particular to a method for manufacturing a shock absorber sleeve coil spring. Background technique [0002] Throughout the development of diesel engines, there are almost no high-power diesel engines that do not use vibration reduction technology. There are many structures of shock absorbers. At present, there are mainly damping type, power type and hybrid type. The characteristic of the damping type is to use damping to eliminate the excitation energy to achieve the purpose of vibration reduction, such as silicone oil shock absorber; the dynamic type is to use the dynamic effect of resonance to generate a counter torque change system that is equal in magnitude and opposite in direction to the disturbance torque. Vibration form to achieve the purpose of vibration reduction, such as pendulum type shock absorber; hybrid shock absorber has the characteristics of the above two kinds of sho...

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Problems solved by technology

[0004] The invention provides a method for manufacturing coil springs of shock absorber sleeves, aiming to solve the problem that current domestic coil spring-related preparation technologies are relatively backward and lack heat treatment and forming technologies for corresponding materials. Most of the research is that the elastic elements are springs rather than coils. Spring, high-performance coil spring product development results are not satisfactory, the method of purchasing shock absorbers from abroad is used to meet the problem of diesel engine production

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