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A grinding method capable of eliminating grinding cracks

A technology for grinding and grinding cracks, applied in the field of grinding, which can solve problems such as affecting production and installation speed, easy occurrence of grinding cracks, and failure to install normally, so as to optimize processing steps and operating skills, and increase heat dissipation. Spaces and channels, the effect of increasing cooling channels and spaces

Active Publication Date: 2020-11-17
孙佑军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in winter when the temperature is very low, grinding cracks are easy to appear, resulting in batches of unqualified products
Once cracks appear, the products will be scrapped in batches, unable to be installed normally, wasting costs, and affecting production and installation speed

Method used

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  • A grinding method capable of eliminating grinding cracks

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Experimental program
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Effect test

Embodiment 1

[0029] A grinding method capable of eliminating grinding cracks, used for grinding carburized parts, comprising the steps of:

[0030] Step 1, reduce the workpiece speed: reduce the workpiece speed from the standard speed of 300 rpm to 150 rpm during normal grinding, so as to slow down the processing speed and frequency, reduce the speed of grinding heat, and avoid rapid heat generation. accumulation;

[0031] Step 2, turn the angle of the grinding head: turn the angle of the grinding head so that the grinding side of the grinding wheel forms a slight angle with the surface of the workpiece to be ground. The slight angle is controlled at about 0.5°, so that the heat can quickly Diffusion out without affecting processing efficiency and precision;

[0032] Step 3, dressing the side of the grinding wheel: use a diamond pen to trim the grinding surface of the grinding wheel into a concave shape, so that the outer edge of the grinding wheel is the highest, and form point contact w...

Embodiment 2

[0038] A grinding process capable of eliminating grinding cracks is used for grinding a quenched high-carbon steel workpiece, comprising the steps of:

[0039] Step 1, reduce the workpiece speed: reduce the workpiece speed from the standard speed of 280 rpm to 170 rpm during normal grinding, so as to slow down the processing speed and frequency, reduce the speed of grinding heat, and avoid rapid heat generation. accumulation;

[0040] Step 2, turn the angle of the grinding head: turn the angle of the grinding head so that the grinding side of the grinding wheel forms a slight angle with the surface of the workpiece to be ground. Diffusion out without affecting processing efficiency and precision;

[0041] Step 3, dressing the side of the grinding wheel: Use a diamond pen to trim the grinding surface of the grinding wheel into a concave shape, so that the outer edge of the grinding wheel is the highest, and form point contact with the grinding surface during the grinding process...

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Abstract

A grinding method capable of removing grinding cracks comprises the steps that 1, the rotating speed of a workpiece is decreased, specifically, the rotating speed of the workpiece is decreased by onethird to one second from the normal rotating speed; 2, the angle of a grinding head is rotated, specifically, the angle of the grinding head is rotated, so that a small included angle is formed between the grinding side face of a grinding wheel and the ground face of the workpiece; 3, the side face of the grinding wheel is trimmed, specifically, the grinding face of the grinding wheel is trimmed into a U shape, so that the point at the outermost edge of the grinding wheel is highest, and the workpece is in point contact with the grinding face during grinding; 4, get-close grinding is conducted, specifically, in the grinding operation process, a handwheel is manually shaken for feeding, thus the grinding wheel slowly gets close to the contact face, and collision is avoided; 5, slow feedingis conducted, specifically, when the grinding wheel grinds the side face of the workpiece, the small feed amount and the cut depth are controlled; and 6, polishing is conducted, specifically, when themachining size is about to reach, a pause is added, and buffing is conducted. The grinding method can be summarized as a six-step working method including the steps of first decreasing, second rotating, third trimming, fourth get-close grinding, fifth slow feeding and six polishing, grinding heat can be effectively controlled, and grinding cracks in carbon steel pieces, carburized pieces and thelike are avoided and completely eradicated.

Description

technical field [0001] The invention relates to the technical field of grinding, in particular to a grinding method capable of eliminating grinding cracks. Background technique [0002] In the grinding process of workpieces with high carbon content such as carburizing steel, quenched high-carbon steel, and cemented carbide, because the chemical composition, brittleness, and heat treatment structure of these materials are different from other workpiece materials, in high-speed grinding processing When the thermal stress on the grinding surface of the workpiece is greater than the strength of the workpiece material, it is easy to produce cracks, also known as grinding cracks, so that the processed surface of the workpiece forms an irregular network with a depth of about 0.5 mm. The main reason is: when the workpiece is subjected to force and heat during high-speed grinding, thermal stress is rapidly generated, and the heat dissipation space is small during processing, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B27/033
CPCB24B27/033
Inventor 孙佑军
Owner 孙佑军
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