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A resin cbn grinding wheel for grinding the plane of the control valve sleeve of the fuel injector

A technology for controlling valve sleeves and fuel injection nozzles, which is applied in abrasives, manufacturing tools, metal processing equipment, etc., can solve the problems of small grinding area of ​​fuel injection nozzle control valve sleeves, inability to meet consistency requirements, and high precision requirements. Long dressing cycle, long service life, and the effect of ensuring shape consistency

Active Publication Date: 2018-03-30
沈阳中科超硬磨具磨削研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surface grinding area of ​​the nozzle control valve sleeve is small, the precision requirement is high (the flatness is less than 0.5 microns), and the shape is concave layer by layer. The existing grinding wheel cannot meet the consistency requirements when grinding the concave shape. Production high scrap rate

Method used

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  • A resin cbn grinding wheel for grinding the plane of the control valve sleeve of the fuel injector
  • A resin cbn grinding wheel for grinding the plane of the control valve sleeve of the fuel injector
  • A resin cbn grinding wheel for grinding the plane of the control valve sleeve of the fuel injector

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] 1. Prepare the matrix according to the general method;

[0008] 2. Preparation of the working abrasive layer; the composition of the working abrasive layer is a resin bond and a mixed filler; the resin bond is an ultrafine polyimide resin; the mixed filler is calculated by volume ratio: particle diameter 10 μm super Fine montmorillonite powder 15, particle size 0.04μm nanoscale SiO 2 5. Nanoscale polytetrafluoroethylene powder with a particle size of 0.05 μm 1, cashew nut shell oil modified friction powder with a particle size of 10 μm; diamond 7, CBN20.

[0009] Prepare the working abrasive layer and the substrate as a whole according to the general method, that is, the CBN grinding wheel;

Embodiment 2

[0011] 1. Prepare the matrix according to the general method;

[0012] 2. Preparation of the working abrasive layer; the composition of the working abrasive layer is a resin bond and a mixed filler; the resin bond is an ultrafine polyimide resin; the mixed filler is by volume ratio: a particle diameter of 15 μm super Fine montmorillonite powder 13, particle size 0.04m nanoscale SiO 2 8. Nanoscale polytetrafluoroethylene powder with a particle size of 0.04 μm 3, cashew nut shell oil modified friction powder with a particle size of 12 μm 1.5; diamond 8, CBN25.

[0013] Prepare the working abrasive layer and the substrate as a whole according to the general method, that is, the CBN grinding wheel;

Embodiment 3

[0015] 1. Prepare the matrix according to the general method;

[0016] 2. Preparation of the working abrasive layer; the composition of the working abrasive layer is a resin bond and a mixed filler; the resin bond is an ultrafine polyimide resin; the mixed filler is calculated by volume ratio: particle diameter 10 μm super Fine montmorillonite powder 15, particle size 0.03μm nanoscale SiO 2 10. Nanoscale polytetrafluoroethylene powder with a particle size of 0.03 μm 5, cashew nut shell oil modified friction powder with a particle size of 10 μm 2; diamond 5, CBN30.

[0017] Prepare the working abrasive layer and the substrate as a whole according to the general method, that is, the CBN grinding wheel;

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Abstract

The invention discloses a resin CBN grinding wheel for grinding a plane of a control valve bush of a fuel spray nozzle. The grinding wheel comprises a base body and a working abrasive material layer, wherein the working abrasive material layer comprises a resin binder and mixed packing; the resin binder is ultra-fine polyimide resin; and the mixed packing comprises the following components according to the volume ratio: 10-15 of ultra-fine montmorillonite powder with grain size of 10-20 [mu]m, 5-10 of nanoscale SiO2 with grain size of 0.03-0.05 [mu]m, 1-10 of nanoscale polytetrafluoroethylene powder with grain size of 0.03-0.05 [mu]m, 1-3 of cashew nutshell liquid modified frictional powder with grain size of 10-15 [mu]m, 5-10 of diamond and 20-30 of CBN. The resin CBN grinding wheel for grinding the plane of the control valve bush of the fuel spray nozzle has the advantages that (1) the grinding wheel is attached to the surface of a workpiece well, and grinding precision is high (planeness can be below 0.5 micrometer); (2) a cutting blade is sharp; (3) the grinding wheel is good in shape retention, long in finishing cycle and long in service life; and (4) the middles of ground workpieces are recessed, and shape consistency can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of grinding wheel manufacturing, in particular to a manufacturing technology of a CBN grinding wheel. Background technique [0002] The surface grinding area of ​​the nozzle control valve sleeve is small, the precision requirement is high (the flatness is less than 0.5 microns), and the shape is concave layer by layer. The existing grinding wheel cannot meet the consistency requirements when grinding the concave shape. Production The reject rate is high. Contents of the invention [0003] For solving the above-mentioned technical problems, the purpose of this invention is to provide a kind of CBN emery wheel, can satisfy the technical requirement in the production, concrete technical scheme is as follows: [0004] A resin CBN grinding wheel for grinding the plane of the control valve sleeve of an oil injector, the grinding wheel is composed of a base body and a working abrasive layer, and the working abra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/28B24D3/00
CPCB24D3/00B24D3/28
Inventor 郑师光王雀郑勇阁王昆
Owner 沈阳中科超硬磨具磨削研究所