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Machining method for cutting inner hole of grinding wheel

A processing method and technology for cutting grinding wheels, which are applied in the field of mechanical processing, can solve the problems of inability to accurately control the precision of the inner hole of the grinding wheel blank, affect the precision of the inner hole of the grinding wheel blank, and low EDM efficiency, and achieve small deformation, small stress concentration, and Effect of low surface roughness

Active Publication Date: 2016-06-01
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

When processing the inner hole of the grinding wheel blank by internal grinding, because the grinding wheel blank is thin, the inner hole is subjected to a large stress, which causes the grinding wheel blank to deform, and produces a large number of burrs around the inner hole, which affects the accuracy of the inner hole of the grinding wheel blank; EDM solves the problem of grinding wheel The deformation phenomenon occurs during the machining of the inner hole of the blank, but the surface of the inner hole is very rough after processing, and the accuracy of the inner hole of the grinding wheel blank cannot be accurately controlled, and the efficiency of EDM machining is low; manual grinding has high labor intensity and low production efficiency, and the grinding wheel is easy to Deformation and poor precision of the inner hole of the grinding wheel

Method used

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  • Machining method for cutting inner hole of grinding wheel
  • Machining method for cutting inner hole of grinding wheel
  • Machining method for cutting inner hole of grinding wheel

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for machining an inner hole of a cutting wheel, comprising the following steps:

[0023] (1) Put 12 metal-bonded diamond stones into the honing head with a specification of D60mm in sequence, and fix the two ends of the stones with rubber rings, and fasten the honing head with the stones installed on the main shaft of the honing machine;

[0024] (2) Fix the grinding wheel blank with an inner hole diameter of 59.90 mm on the honing fixture, set the honing fixture with the fixed grinding wheel blank on the honing head, and lock the honing fixture on the honing machine to keep it still; among them, the grinding wheel blank The depth of the superimposed inner hole is 12mm;

[0025] (3) Adjust the rotation speed of the honing head around the axial centerline of the honing head to 550 rpm, and the reciprocating times of the honing head along the axial direction of the inner hole of the grinding wheel blank to 55 times / min;

[0026] (4) The inner hole of the grindin...

Embodiment 2

[0032] A method for machining an inner hole of a cutting wheel, comprising the following steps:

[0033] (1) Put 8 metal-bonded cubic boron nitride whetstones into the honing head with a specification of D50mm in turn, fix the two ends of the whetstone with rubber rings, and fasten the honing head with the whetstone installed on the main shaft of the honing machine;

[0034](2) Fix the grinding wheel blank with an inner hole diameter of 49.88 mm on the honing fixture, set the honing fixture with the fixed grinding wheel blank on the honing head, and lock the honing fixture on the honing machine to keep it still; among them, the grinding wheel blank The superimposed inner hole depth range is 18mm;

[0035] (3) Adjust the speed of the honing head to 700 rpm, and the number of reciprocations of the honing head to 60 times / min;

[0036] (4) The inner hole of the grinding wheel honed in step (3) is tested for dimensional accuracy with a cylindrical plug gauge, then the grinding wh...

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Abstract

The invention discloses a machining method for cutting an inner hole of a grinding wheel. The machining method comprises the following steps: fastening and installing a honing head provided with oilstone on a main shaft of a honing machine at first, then installing a honing fixture fixed with a grinding wheel blank on the honing head in a sleeving manner, locking the honing fixture on the honing machine and keeping the honing fixture fixed, adjusting a cross-hatch honing movement stroke, then inspecting the honed grinding wheel by a plug gauge, and finally ultrasonically cleaning and drying the grinding wheel, wherein the oilstone is metal-bonded diamond oilstone or metal-bonded cubic boron nitride oilstone. According to the invention, during a honing process, the grinding wheel blank is clamped in a floating manner relative to the honing head, and easy to centre; the contact area of the oilstone and the surface of the inner hole is large, and a honing pressure is adjustable; moreover, low relative movement speed, stress concentration and deformation are achieved; and therefore, high dimensional accuracy and roundness, and low surface roughness can be obtained.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a method for processing the inner hole of a cutting wheel. Background technique [0002] High-precision ultra-thin and ultra-hard material cutting grinding wheel has dense structure, thin thickness, high precision, good self-sharpening, sharp cutting, small kerf, and good surface quality, etc. It is mainly used in various electronic products in the field of electronic information Cutting and grooving of precision parts in components and machinery industry. Since the blank forming of the grinding wheel cannot be accurate to the required dimensional accuracy, it must be guaranteed by subsequent processing. The machining of the inner hole of the ultra-thin and ultra-hard material cutting wheel blank generally includes internal grinding, electric discharge machining and traditional manual grinding. When processing the inner hole of the grinding wheel blank by intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/10B24D3/06B24B33/08C22C26/00C22C9/02C22C29/16
CPCB24B33/08B24D3/06B24D3/10B24D18/00C22C9/02C22C26/00C22C2026/003
Inventor 张亮波张云鹤杨涛
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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