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Compression spring processing process

A processing technology, a technology for compressing springs, applied in the direction of wire processing, wire manufacturing springs, manufacturing tools, etc., can solve problems such as large pitch, unguaranteed spring load, and impact on spring production progress.

Inactive Publication Date: 2011-11-23
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compression springs are widely used in various industrial fields, but for compression springs with large spring winding ratio, large pitch, and the number of working turns is less than or equal to 3 turns, a large deformation occurs during processing, and the verticality and length of the spring are difficult. Control, geometric dimensions cannot meet the process requirements, and experienced workers need to trim the spring repeatedly to ensure the geometric dimensions and load of the spring
Not only is the processing difficult and the cycle is long, but it also seriously affects the production schedule of the spring
[0003] The original spring manufacturing process: rolling - ring breaking - grinding end face - correcting spring length - quenching - correcting length - tempering - mechanical performance inspection - standing treatment - heating and loading aging treatment - fine grinding - inspection - sandblasting - magnetic powder Flaw detection - sand blasting - surface treatment - heating and loading aging treatment - finished product inspection, the deformation of the outer diameter spring mainly occurs during the standing treatment and heating and aging treatment, the verticality and length of the spring are difficult to control, and the load of the spring cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A compression spring processing technology is characterized in that the process steps are as follows:

[0011] 1) Rolling: Coil the cored spring on the lathe, and ensure the technical parameters of the outer diameter, pitch, length, working ring, supporting ring and total number of turns of the supporting ring;

[0012] 2) Broken circle: use broken thread scissors to break the working circle and the total circle according to the process requirements;

[0013] 3) Diameter reduction: install the spring on Figure 1 On the special tool shown, the support ring is fixed on the big end of the mandrel, and the working ring of the spring is wound on the small diameter at the same time, so as to reduce the outer diameter of the working ring of the spring;

[0014] 4) Quenching: heat in a salt bath furnace at 850±10°C, keep it warm for 7-8 minutes, and then cool in oil at 20-100°C;

[0015] 5) Primary tempering: heating in the furnace at 430-520°C and holding for 60 minutes;

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PUM

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Abstract

The invention relates to a compression spring processing process. The compression spring processing process is characterized by comprising the following process steps of: rolling, cutting into rings, reducing diameters, quenching, performing primary tempering, inspecting mechanical properties, setting, grinding end faces, correcting the length and the concentricity of springs, performing secondary tempering, setting, performing primary heating and loading aging treatment, grinding the end faces, detecting, performing sand blasting, performing magnetic powder inspection, performing sand blasting, performing surface treatment, performing secondary heating and loading aging treatment, and detecting finished products. By the process, the deformation of the springs in the processing process can be reduced, the geometric dimension of the springs is ensured, and production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a compression spring processing technology, which is used for processing compression springs with large spring winding ratio, large pitch and less than or equal to 3 working turns. Background technique [0002] Compression springs are widely used in various industrial fields, but for compression springs with large spring winding ratio, large pitch, and the number of working turns is less than or equal to 3 turns, a large deformation occurs during processing, and the verticality and length of the spring are difficult. Control, the geometric size cannot meet the process requirements, and experienced workers need to trim the spring repeatedly to ensure the geometric size and load of the spring. Not only the processing is difficult and the cycle is long, but also seriously affects the production progress of the spring. [0003] The original spring manufacturing process: rolling - ring breaking - grinding end face - correcting spri...

Claims

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Application Information

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IPC IPC(8): B21F35/00C21D9/02
Inventor 韩文霞
Owner SHENYANG AIRCRAFT CORP
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