阅读说明：本技术 一种波形弹簧热固定工装 (Wave spring hot fixation tool ) 是由 孙振淋 郑医 吴彦芬 钱钰 辛玉武 于 2020-04-30 设计创作，主要内容包括：本申请提供一种波形弹簧热固定工装,所述固定工装包括心轴1第一压块2、第二压块3、压板4、垫圈5和螺母6,其中：心轴1为两极凸台结构,第一级凸台设置螺纹,第一级凸台的直径小于第二级凸台；第一压块2为中空管状结构,第一压块2的一端为平面,第一压块2的另一端为波形面；第二压块3为中空管状结构,第二压块2的一端为平面,第二压块2的另一端为波形面；第一压块2和第二压块3的波形面相对设置,用于波形弹簧热固定；第一压块2和第二压块3穿过心轴1的第二级凸台；压板4、垫圈5和螺母6依次穿过心轴1的第一级凸台。(The application provides a wave spring hot fixation frock, fixed frock includes 1 first briquetting 2 of mandrel, second briquetting 3, clamp plate 4, packing ring 5 and nut 6, wherein: the mandrel 1 is of a two-pole boss structure, a first-stage boss is provided with threads, and the diameter of the first-stage boss is smaller than that of a 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 corrugated surface; the second pressing block 3 is of a hollow 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 corrugated surface; the corrugated surfaces of the first pressing block 2 and the second pressing block 3 are arranged oppositely and used for heat fixation of the corrugated spring; the first pressing block 2 and the second pressing block 3 pass through the second-stage boss of the mandrel 1; the pressure plate 4, washer 5 and nut 6 are passed through the first stage boss of the spindle 1 in sequence.)

1. The utility model provides a wave spring hot fastening frock, its characterized in that, fixed frock includes mandrel (1), first briquetting (2), second briquetting (3), clamp plate (4), packing ring (5) and nut (6), wherein:

the mandrel (1) is of a two-pole boss structure, a first-stage boss is provided with threads, and the diameter of the first-stage boss is smaller than that of a 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 corrugated surface; the second pressing block (3) is of a hollow 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 corrugated surface; the wavy surfaces of the first pressing block (2) and the second pressing block (3) are arranged oppositely and used for heat fixation of a wavy spring;

the first pressing block (2) and the second pressing block (3) penetrate through a second-stage boss of the mandrel (1); the pressing plate (4), the gasket (5) and the nut (6) sequentially penetrate through the first-stage boss of the mandrel (1), the first pressing block (2) and the second pressing block (3) are pressed through screwing the nut (6), and the wave spring is subjected to heat fixing.

2. The wave spring thermal fixing tool according to claim 1, wherein the first stage boss is provided with T-shaped threads.

3. The wave spring thermal fixing tool according to claim 2, wherein the torque applied to the nut (6) is (35-175) N-m.

4. The wave spring thermal fixing tool according to claim 2, characterized in that the number of the wave springs placed between the first pressing block (2) and the second pressing block (3) is not more than 5.

5. The wave spring hot fixing tool according to claim 1, wherein the fixing tool is made of 1Cr18Ni9 Ti.

6. The wave spring thermal fixing tool according to claim 1, characterized in that the wave surface of the first pressing block (2) and the wave surface of the second pressing block (2) are arranged according to the wave shape of the wave spring.

Technical Field

The invention belongs to the technical field of metal heat treatment, and relates to a wave spring hot fixing tool.

Background

The wave spring has small volume, small occupied space and even stress, is particularly suitable for shaft parts, and has wide application in the fields of aerospace and the like. The single WS-series wave spring needs to be heat-set after the stamping is finished. Traditional heat fixation frock selected material is 45 # steel, and the screw thread kind is the triangle screw thread, and the heat fixation goes on under high temperature usually, and the long-term work back softens under 45 # steel high temperature state, and the thread adhesion can take place when the uninstallation to the heat fixation frock, causes the frock whole to scrap.

Disclosure of Invention

The purpose of the invention is: the utility model provides a wave spring hot fixation frock through the adjustment of frock selection of material, changes the screw thread kind, uses the measure of fixed moment of torsion, when improving the profile laminating degree of monolithic WS series wave spring in the hot fixation process, prolongs frock life by a wide margin.

The application provides a wave spring hot fixation frock, fixed frock includes 1 first briquetting 2 of mandrel, second briquetting 3, clamp plate 4, packing ring 5 and nut 6, wherein:

the mandrel 1 is of a two-pole boss structure, a first-stage boss is provided with threads, and the diameter of the first-stage boss is smaller than that of a 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 corrugated surface; the second pressing block 3 is of a hollow 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 corrugated surface; the corrugated surfaces of the first pressing block 2 and the second pressing block 3 are arranged oppositely and used for heat fixation of the corrugated spring;

the first pressing block 2 and the second pressing block 3 pass through the second-stage boss of the mandrel 1; the pressing plate 4, the gasket 5 and the nut 6 sequentially penetrate through the first-stage boss of the mandrel 1, the first pressing block 2 and the second pressing block 3 are pressed tightly by screwing the nut 6, and the wave spring is thermally fixed.

Preferably, the first stage boss is provided with a T-shaped thread.

Preferably, the torque applied to the nut 6 is (35 to 175) N · m.

Preferably, the number of the wave springs placed between the first pressing block 2 and the second pressing block 3 is not more than 5.

Preferably, the material of the fixing tool is 1Cr18Ni9 Ti.

Preferably, the wave surface of the first press piece 2 and the wave surface of the second press piece 2 are arranged according to the wave shape of the wave spring.

The invention has the technical effects that: according to the waveform spring thermal fixing tool, the fitting degree of the molded surface and the tool in the thermal fixing process of the waveform spring can be effectively ensured by using the tool, the size precision of the waveform spring after thermal fixing is improved, and meanwhile, the service life of the tool is greatly prolonged.

Drawings

FIG. 1 is a schematic structural view of a wave spring tooling diagram provided in the present application;

FIG. 2 is a schematic view of a mandrel provided herein;

FIG. 3 is a schematic view of a compact provided herein;

FIG. 4 is a schematic view of another platen provided herein;

FIG. 5 is a schematic view of yet another platen provided herein;

wherein: 1-mandrel, 2-first pressing block, 3-second pressing block, 4-pressing plate, 5-gasket and 6-nut.

Detailed Description

The invention belongs to the technical field of metal heat treatment, and relates to a wave spring hot fixing tool. The tool is manufactured by selecting 1Cr18Ni9Ti, the tool thread is a temperature-resistant T-shaped thread, after the tool clamps the wave spring, a torque of 35-175 N.m is applied to lock the tool, the number of the tool clamping wave springs is not more than 5, the thermal fixing tool for locking the wave spring is placed in a vacuum furnace and is kept warm at a thermal fixing temperature, and after the tool is taken out of the furnace and cooled, the tool is unloaded by using a torque wrench, and the wave spring is taken out. By the method, the problem that the service life of the original heat fixing tool made of No. 45 steel is too low can be effectively solved, the service life of the tool is greatly prolonged, the locking torque is solidified, the fitting degree of the molded surface and the tool in the process of the heat fixing process of the wave spring is effectively guaranteed, and the size precision of the wave spring after heat fixing is effectively improved.

The technical solution of the invention is as follows: the utility model provides a wave spring thermal fixation frock, chooses for use 1Cr18Ni9Ti stainless steel as the frock material, replaces original No. 45, improves the temperature resistant characteristic of frock.

The design uses T shape screw thread to replace original triangle screw thread, prevents that the frock from appearing gluing in the dismantlement process, causes the frock to scrap.

When the tool is clamped, a torque wrench is used, the locking torque is (35-175) N.m, and the fitting degree of the profile of the wave spring and the tool is improved.

The quantity of the wave springs clamped by each tool does not exceed 5 pieces, so that the situation that the fitting degree of the wave springs after thermal fixing and shape correction is not high due to excessive tool clamping is avoided.

And (4) placing the thermal fixing tool provided with the wave spring after locking into a vacuum furnace, and carrying out heat preservation and air cooling at the thermal fixing temperature.

When the thermal fixing tool is unloaded, the torque wrench is used for taking out the wave spring after thermal fixing and shape correction, and the damage of the tool thread opening is prevented.

The invention is further illustrated by the following examples:

a single WS series wave spring with a certain specification is made of 1Cr17Ni7Al, the temperature of a thermal fixing process is 475 ℃, the temperature is kept for 60min, the original tool is made of No. 45 steel, the thread type is triangular, and after the tool is used for 2 periods, the threads are adhered, so that the tool is scrapped.

The existing improvement measures are as follows:

1. the material of the tool is changed into 1Cr18Ni9Ti with good temperature resistance.

2. The thread type is changed from a triangle to a T shape.

3. And (5) locking the tool by using a torque wrench, wherein the torque is 75N m.

4. Each set of thermal fixing tool is used for clamping 3 wave springs.

5. And (5) after the parts are thermally fixed, air cooling.

6. And a torque wrench is used for unloading the tool.

Through tool optimization and tool use method solidification, the degree of the profile of the corrugated spring with the specification attached to the tool is increased, and the service life of the thermal fixing tool is greatly prolonged.