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Electroplated cbn grinding wheel for high-efficiency precision profile grinding of gears and preparation method thereof

A precision forming and grinding wheel technology, applied in the direction of bonding grinding wheels, abrasives, manufacturing tools, etc., can solve the problems of simple shape and low precision of electroplated CBN grinding wheels, and achieve the effect of load reduction, optimized mass distribution, and accelerated penetration

Active Publication Date: 2016-05-04
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of rapid prototyping grinding for gears, so that the surface roughness of the processed workpiece reaches Ra0.4 electroplated CBN grinding wheel and its preparation method

Method used

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  • Electroplated cbn grinding wheel for high-efficiency precision profile grinding of gears and preparation method thereof
  • Electroplated cbn grinding wheel for high-efficiency precision profile grinding of gears and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 and figure 2 As shown, the electroplated CBN emery wheel used for high-efficiency precision profile grinding of gears includes a dish-shaped substrate 1 and an abrasive zone on its edge, the quality of the abrasive zone accounts for 4% of the total mass of the substrate, and the abrasive layer on the abrasive zone 2 The cross-sectional shape is an isosceles trapezoid with rounded corners between the upper bottom and the two waists, and the angle between the two waists and the lower bottom is 60°. The fillet radius r is 0.3. There are thread holes and circular holes evenly distributed on the concentric arc of the grinding wheel base body from the center R27mm, the thread holes include 3 thread holes I3 and 3 thread holes II4, and there are 6 circular holes 5, which are used to fasten the grinding wheel and Avoid wheel runout. The abrasive used in the grinding wheel is CBN, the particle size is 70 / 80, and the embedding rate of the coating is 60%.

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Embodiment 2

[0034] For the post-treatment of the electroplated grinding wheel, the arc abrasive layer of the grinding wheel is divided into 4 areas on average, each area is immersed in the activation solution successively, the depth is 3mm, the current density is 1A*dm-2, and the time is 10min; then the grinding wheel is taken out for After cleaning and drying, the blade height deviation on the arc and on the plane is 14.8%, and other steps are the same as in Example 1.

Embodiment 3

[0036]For the post-treatment of the electroplated grinding wheel, the arc abrasive layer of the grinding wheel is divided into 20 areas on average, each area is immersed in the activation solution successively, the depth is 1mm, the current density is 1A*dm-2, and the time is 3min; then the grinding wheel is taken out for treatment. After cleaning and drying, the blade height deviation on the arc and on the plane is 5.6%, and other steps are the same as in Example 1.

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Abstract

The invention relates to an electroplating CBN grinding wheel for efficient and precise gear profile grinding. The electroplating CBN grinding wheel comprises a dish-shaped base body and a material grinding area at the edge of the dish-shaped base body, the mass of the material grinding area is 4%-15% of the total mass of the base body, the cross-section of a material grinding layer on the material grinding area is in an isosceles trapezoid shape, and the upper bottom and the two lateral edges are chamfered. A manufacturing method of the electroplating CBN grinding wheel includes the steps of firstly machining the base body of the grinding wheel, and then sequentially conducting negative and positive pole alternative electrochemistry oil removing, clamp and electrostatic adsorption film insulation assembling, negative and positive pole alternative electrolytic treatment, ballistic method preplating, grinding material assembling, thickening and grinding wheel electroplating on the base body of the grinding wheel. The using linear velocity of the electroplating CBN grinding wheel can achieve 250 m / s, and the grinding feeding amount achieves 4 m / min-10 m / min and is much higher than that of a common grinding wheel. The roughness Ra can achieve 0.4 micrometers, the surface quality requirement of a workpiece can be met, and gear efficient and precise gear profile grinding can be successfully achieved.

Description

technical field [0001] The invention belongs to the field of design and manufacture of abrasives and abrasive tools, in particular to an electroplated CBN grinding wheel for high-efficiency and precise form grinding of gears and a preparation method thereof. Background technique [0002] With the rapid advancement of my country's industrialization, the demand for gears is increasing exponentially, and the quality requirements for gears are getting higher and higher. In the precision gear manufacturing process, it is necessary to use a grinding wheel for profile grinding of the tooth blank surface. At present, the grinding wheels for profile grinding of gears on the market are deficient in several aspects such as grinding line speed, feed rate, and surface roughness of the gear after grinding. [0003] To achieve high-efficiency precision profile grinding of gears requires the use of CBN grinding wheels. CBN grinding wheels used for gear forming grinding can be divided into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D5/00C25D7/00
Inventor 王亮亮刘铭陈亚超胡玉峰刘天立朱文立王志强
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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