Wave spring thermal fixing tool
A wave spring, fixing tooling technology, applied in the direction of making springs from wire, wire processing, other household appliances, etc., can solve the problems of thread adhesion, tooling scrapping, etc., to prolong the service life, ensure the degree of fit, and improve the dimensional accuracy. Effect
Active Publication Date: 2020-08-18
HARBIN DONGAN ENGINE GRP
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Problems solved by technology
The material of traditional heat-fixing tooling is No. 45 steel, and the thread type is triangular thread. Heat-fixing is usually carried out at high temperature. No. 45 steel softens after long-term work at high temperature. Thread adhesion will occur when the heat-fixing tool is unloaded, resulting in overall scrapped
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[0020] The invention belongs to the technical field of metal heat treatment, and relates to a wave spring heat fixing tool. The tooling is made of 1Cr18Ni9Ti. The tooling thread is a temperature-resistant T-shaped thread. After the tooling clamps the wave spring, apply a 35-175N·m torque to lock the tooling. The number of wave springs clamped by the tooling does not exceed 5 pieces, and the locking wave spring The heat-fixing tool is placed in a vacuum furnace to keep warm at the heat-fixing temperature. After cooling out of the furnace, use a torque wrench to unload and take out the wave spring. Through the above method, the problem of low service life of the original 45 steel heat-fixing tooling can be effectively solved, the service life of the tooling is greatly extended, and the curing locking torque effectively ensures the profile and tooling during the heat-fixing process of the wave spring. The degree of fit effectively improves the dimensional accuracy of the wave spr...
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The invention provides a wave spring thermal fixing tool. The fixing tool comprises a mandrel 1, a first pressing block 2, a second pressing block 3, a pressing plate 4, a washer 5 and a nut 6, wherein the mandrel 1 is of a two-stages boss structure, the first-stage boss is provided with threads, and the diameter of the first-stage boss is smaller than that of the second-stage boss; the first pressing block 2 is of a hollow tubular structure, one end of the first pressing block 2 is a plane, and the other end of the first pressing block 2 is a wave surface; the second pressing block 3 is of ahollow tubular structure, one end of the second pressing block 2 is a plane, and the other end of the second pressing block 2 is a wave surface; the wave surfaces of the first pressing block 2 and thesecond pressing block 3 are oppositely arranged and used for thermally fixing a wave spring; the first pressing block 2 and the second pressing block 3 penetrate through the second-stage boss of themandrel 1; and the pressing plate 4, the washer 5 and the nut 6 sequentially penetrate through the first-stage boss of the mandrel 1.
Description
technical field [0001] The invention belongs to the technical field of metal heat treatment, and relates to a wave spring heat fixing tool. Background technique [0002] Wave springs are small in size, occupy less space, and are evenly stressed, especially suitable for shaft parts, although they are widely used in aerospace and other fields. After stamping, the single-piece WS series wave spring needs to be heat-fixed. The material of traditional heat-fixing tooling is No. 45 steel, and the thread type is triangular thread. Heat-fixing is usually carried out at high temperature. No. 45 steel softens after long-term work at high temperature. Thread adhesion will occur when the heat-fixing tool is unloaded, resulting in overall scrapped. Contents of the invention [0003] The object of the present invention is to provide a heat-fixing tool for wave springs, which can improve the profile fit degree of single-piece WS series wave springs in the heat-fixing process by adjusti...
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IPC IPC(8): B21F35/04
CPCB21F35/04
Inventor 孙振淋郑医吴彦芬钱钰辛玉武
Owner HARBIN DONGAN ENGINE GRP