Positioning clamp for rotary polishing of R face of sliding vane of compressor and polishing method for rotary polishing of R face of sliding vane of compressor

A compressor and sliding vane technology, which is applied to the positioning fixture and polishing field of rotary polishing of the R surface of the compressor sliding vane, can solve the problems of only 0.4μm surface roughness, metal dust pollution, and reduce polishing efficiency, and achieve improved Polishing accuracy, ensuring stable grinding, and improving polishing efficiency

Active Publication Date: 2022-01-04
陕西金信天钛材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (a) Fine grinding technology: use a grinder to polish the R surface of the slider, but the surface roughness achieved so far is only 0.4μm
And there are following deficiencies: 1) there are micro-cracks and residual stress on the machined surface; 2) there is pollution from metal dust; 3) because the surface hardness of the sliding plate is improved, the polishing efficiency is reduced

Method used

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  • Positioning clamp for rotary polishing of R face of sliding vane of compressor and polishing method for rotary polishing of R face of sliding vane of compressor
  • Positioning clamp for rotary polishing of R face of sliding vane of compressor and polishing method for rotary polishing of R face of sliding vane of compressor
  • Positioning clamp for rotary polishing of R face of sliding vane of compressor and polishing method for rotary polishing of R face of sliding vane of compressor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The compressor sliding vane is made of high-speed steel with carburized gas surface, the original hardness is 60HRC, the original roughness Ra is 2.8μm, and the machining allowance is ≤5μm.

[0035] 1) Evaluate the original roughness of the R surface of the compressor slide vane carburized in the gas surface layer to be 2.8 μm.

[0036] 2) Install the compressor slide in the fixture, such as figure 2 .

[0037] 3) Select the abrasive B for precision polishing according to the original roughness, such as image 3 (b), the abrasive B is corn kernels: chromium oxide: corundum according to the mass ratio of (90-100): (2-5): (30-40), the D50 of the abrasive B is 100 microns, The structure is a topological polyhedron, each angle of the topological polyhedron ranges from 15° to 160°, and the processing time is 30 minutes to obtain a polished slide, such as Figure 4 .

[0038] 4) After polishing, the roughness of the R surface of the compressor sliding vane is less than 0...

Embodiment 2

[0040] The compressor slide is made of carbonitrided high-speed steel on the gas surface. The original hardness is 60HRC, the original roughness Ra is 12μm, and the machining allowance is ≤5μm. It is required that the roughness Ra of the R surface of the slide must be less than 0.05μm.

[0041] 1) Evaluation The original roughness of the R surface of the compressor slide vane carburized by the gas surface is 12 μm.

[0042] 2) Install the compressor slide in the fixture.

[0043] 3) According to the original roughness, select the grinding material A and add water and grinding liquid. The grinding material A includes: A abrasive grains, water, and grinding liquid. The volume ratio of the A grinding grains to water is 6-8:1. The grinding The ratio of liquid to water added is 2 to 5:100, the hardness of the A abrasive grain is greater than 2000HV, and the shape and structure are conical, and the A abrasive grain is green silicon carbide: brown corundum: plastic grinding according...

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Abstract

The invention relates to a polishing method for rotary polishing of the R face of a sliding vane of a compressor. The polishing method comprises the steps that firstly, the original roughness of the R face of the sliding vane of the compressor is confirmed, then grinding materials are selected according to the original roughness, fine polishing or grinding and fine polishing is / are carried out, the R face of the sliding vane does forward and reverse rotation motion of revolution and rotation in the grinding materials, and therefore even and effective polishing can be carried out, and the surface precision of the R face of the sliding vane can be effectively controlled. After the polishing method for rotary polishing of the R face of the sliding vane of the compressor is adopted, the roughness Ra of the polished R face of the sliding vane of the compressor is smaller than 0.05 micron, no chamfer exists on the side face, and no oxidative deterioration layer, corrosion layer or element pollution layer exists on the surface; and the polishing method is physical polishing and is not limited by materials, and therefore the polishing efficiency is improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of mechanical processing of compressors, and in particular relates to a positioning fixture for rotary polishing of the R surface of a compressor sliding vane and a polishing method thereof. 【Background technique】 [0002] In the field of household appliances and automobiles, with the improvement of energy efficiency standards, higher requirements are put forward for the power consumption and stand-alone energy efficiency of rotary compressors. High speed and high load become the trend, which makes the surface slip of traditional compressor vanes; At the same time, with the development of refrigerants, due to the different physical properties of the working medium, the working pressure of the compressor is increasing, and the lubrication conditions are deteriorating, resulting in increased wear and leakage between the friction pairs, resulting in a decrease in the energy efficiency ratio of the compressor. ...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B41/06B24B29/02
CPCB24B1/00B24B41/06B24B29/02
Inventor 米天健高军帅
Owner 陕西金信天钛材料科技有限公司
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