Inner cooled grinding wheel

Abstract

The invention discloses an inner cooled grinding wheel which comprises a wheel body and a shaft core; an inner ring flow passage is formed in the wheel body; a plurality of unidirectional curved flow passages which take the inner ring flow passage as starting points and an outer circular surface of the wheel body as end points are further formed in the wheel body; and cooling liquid nozzles are formed by the unidirectional curved flow passages on the outer circular surface of the wheel body. The inner cooled grinding wheel provided by the invention has a good cooling effect in processing, avoids surface damages of workpieces, and improves processing quality.

Description

technical field [0001] The invention relates to an internal cooling grinding wheel, which belongs to grinding processing tools. Background technique [0002] In the grinding process of metal or non-metal workpieces, abrasive grains are used to remove the surface allowance of the workpiece. When grinding, the cutting speed is high and the cutting thickness is small. Compared with the cutting processing methods such as turning and milling, the cutting amount per unit power of grinding is often more than ten times that of other methods, and almost all the consumed functions are turned into grinding heat. Therefore, It is very easy to cause instantaneous high temperature in the grinding area, which will cause problems such as burns and cracks on the surface of the workpiece during grinding, which will affect the quality of the parts. [0003] In order to control the temperature of the grinding area, some cooling methods can be used to reduce the grinding temperature, such as li...

AI Technical Summary

Problems solved by technology

When grinding, the cutting speed is high and the cutting thickness is small. Compared with the cutting processing methods such as turning and milling, the cutting amount per unit power of grinding is often more than ten times that of other methods, and almost all the consumed functions are turned into grinding heat. Therefore, It is very easy to cause instantaneous high temperature in the grinding area, which will cause problems such as burns and cracks on the surface of the workpiece during grinding, which will affect the quality of the parts

[0003] In order to control the temperature of the grinding area, some cooling methods can be used to reduce the grinding temperature, such as liquid nitrogen cooling, low-temperature air cooling, high-pressure jet impact cooling and pouring cooling, etc., but these cooling methods are difficult to directly act on the inside of the grinding area. Therefore, the cooling effect obtained is average, and the internally cooled grinding wheel can reduce the temperature of the grinding zone more directly and effectively. There are usually two results in the prior art. The irregular inner hole constitutes the coolant circulation channel, but due to the irregular shape of the inner hole, it is difficult for the coolant to ensure continuous and smooth access to the grinding area, which affects the cooling effect. The other is to process a radial line from the center of the grinding wheel to the edge The cooling groove is used to ensure the continuous flow of coolant, but the coolant sprayed from the radial cooling groove collides with the workpiece, which will easily cause vibration during grinding and affect the grinding accuracy

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