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Micro-texture grinding wheel and grinding heat dissipation improvement method thereof

A micro-texture, grinding wheel technology, applied in the direction of bonded grinding wheels, abrasives, metal processing equipment, etc., can solve the problems of poor heat dissipation performance of abrasive materials, deterioration of workpiece processing quality, low material removal in a single time, etc. The effect of cutting heat dissipation, avoiding overheating and workpiece burn, and improving grinding efficiency

Inactive Publication Date: 2019-02-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the cutting process, the cutting heat will lead to rapid wear of the tool and a decrease in the processing quality of the workpiece
In the grinding process, a considerable part of the power consumption of the machine tool will be converted into grinding heat. The single material removal amount of grinding is low, and the heat carried away by grinding debris is very little. The heat dissipation performance of the abrasive material itself is relatively poor. , most of the heat will accumulate in the grinding arc area, causing the temperature of the arc area to rise sharply, which will easily cause grinding wheel burns and deterioration of the processing quality of the workpiece
During the grinding process, the contact area between the grinding wheel and the workpiece surface is relatively airtight, and the traditional method of pouring coolant is also difficult to realize that the cooling medium really enters the grinding contact interface, and the cooling effect is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A micro-textured grinding wheel, the base material of which is alumina vitrified bond CBN composition, the outer circular arc grinding working surface of the grinding wheel is processed with a groove array texture by diamond precision grinding, and the grooves are aligned with the central axis of the grinding wheel Arranged at an included angle of 45°, the cross section of the groove is V-shaped, the width of the top of the V-shaped groove is 150 μm, the groove depth is 200 μm, and the circumferential spacing of the groove array along the grinding arc surface of the grinding wheel is 600 μm.

[0011] The existence of the texture array of the grinding wheel makes the heat dissipation surface of the grinding arc area increase by more than 40%, and the heat dissipation space is greatly increased. The grinding wheel can be applied to the high-speed grinding of aerospace titanium alloys. The coolant can effectively infiltrate into the "grinding wheel-workpiece" contact interf...

Embodiment 2

[0013] A micro-textured grinding wheel, the base material of which is a vitrified bond silicon carbide (corundum) composition, the outer circular arc grinding working surface of the grinding wheel is processed by a micro-milling processing method with a cylindrical micro-pit array texture, columnar concave The diameter of the pit is 500 μm, the depth of the pit is 500 μm, the pit array is neatly arranged to occupy the entire outer circular working surface of the grinding wheel, and the distance between the centers of the pits is 1000 μm.

[0014] The existence of the texture array of the grinding wheel makes the heat dissipation surface of the grinding arc area increase by nearly 80%, and the heat dissipation space is greatly increased. The grinding wheel can be applied to high-speed grinding of difficult-to-machine materials such as mold steel. Under this condition, the sprayed coolant can effectively penetrate into the "grinding wheel-workpiece" contact interface in the grind...

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Abstract

The invention belongs to the technical field of mechanical grinding tool manufacturing, and relates to a micro-texture grinding wheel and a grinding heat dissipation improvement method thereof. Regular surface pits or groove array textures are arranged on the grinding working arc surface of the micro-texture grinding wheel, during grinding of the grinding wheel, the grinding wheel material of thegrinding arc area and the workpiece material are in a close contact state, the actual heat dissipation area of the grinding arc area can be increased due to the existence of the regular surface pits or the groove array textures, so that the grinding fluid can be sprayed into the grinding arc area, and meanwhile, the abrasion of the grinding wheel can be reduced due to the fact that hard grinding scraps are contained. The micro-texture grinding wheel can be widely applied to grinding machining of high-toughness refractory materials, the problem that heat exchange is difficult due to the fact that the grinding liquid forms a film and is boiled under a high-speed grinding working condition can be solved, so that efficient grinding production is realized, and the process is simple and convenient.

Description

technical field [0001] The invention relates to a micro-textured grinding wheel and a method for improving heat dissipation during grinding, and belongs to the technical field of mechanical grinding tool manufacturing. Background technique [0002] Machining is an important metal forming method. In the field of cutting technology research, improving the service life of cutting tools, improving the processing quality and processing efficiency of workpieces has always been a hot spot of concern. During the cutting process, the cutting heat will cause the rapid wear of the tool and the decline of the processing quality of the workpiece. In the grinding process, a considerable part of the power consumption of the machine tool will be converted into grinding heat. The single material removal amount of grinding is low, and the heat carried away by grinding debris is very little. The heat dissipation performance of the abrasive material itself is relatively poor. , most of the he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D5/10
CPCB24D5/10
Inventor 吴泽邢佑强刘晓军
Owner SOUTHEAST UNIV
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