Method for quickly dressing grinding wheel

Abstract

The invention discloses a method for quickly dressing a grinding wheel. The method for quickly dressing the grinding wheel includes steps that (1) fixing the grinding wheel to be dressed; (2) setting an initial point; (3) dressing the cup-shaped grinding wheel; (4) finishing dressing the cup-shaped grinding wheel. The method for quickly dressing the grinding wheel is capable of greatly reducing the cup-shaped grinding wheel dressing time, the cup-shaped grinding wheel dressing time is reduced to 20 minutes from the original dressing time of 4 hours, and the single equipment capacity is improved by 7.4% per day; because the change of the cup-shaped grinding wheel dressing mode enables the inner edge of a grinding wheel blade to be flat, the different sizes due to the rugged diagonal line are avoided, and the single crystal size fluctuation of an SiS156G Okamoto integrated machine is reduced; the flatness of the cup-shaped grinding wheel is guaranteed, and the error between the highest point and lowest point of the cup-shaped grinding wheel is smaller than 50 micrometers.

Description

Technical field: [0001] The invention relates to a method for dressing a grinding wheel, in particular to a method for quickly dressing a grinding wheel. Background technique: [0002] The main function of the diamond grinding wheel dressing equipment used in China is to smooth the surface of the grinding wheel to ensure the flatness of the cup-shaped grinding wheel. The error between the highest point and the lowest point is within 50um. The uneven surface and a large amount of silicon powder attached to the surface reduce the processing capacity. Therefore, when the SiS156G Okamoto integrated machine processes a single crystal up to 18000mm, it is necessary to repair the surface of the grinding wheel. [0003] At present, the SiS156G Okamoto all-in-one machine in use has its own grinding wheel dressing function. The principle is that the cup-shaped grinding wheel to be trimmed is installed on the SiS156G Okamoto all-in-one machine, and it contacts the silicon carbide oilst...

AI Technical Summary

Problems solved by technology

[0002] The main function of the diamond grinding wheel dressing equipment used in China is to smooth the surface of the grinding wheel to ensure the flatness of the cup-shaped grinding wheel. The error between the highest point and the lowest point is within 50um. The uneven surface and a large amount of silicon powder attached to the surface reduce the processing capacity. Therefore, when the SiS156G Okamoto integrated machine processes a single crystal up to 18000mm, it is necessary to repair the surface of the grinding wheel.

[0003] At present, the SiS156G Okamoto all-in-one machine in use has its own grinding wheel dressing function. The principle is that the cup-shaped grinding wheel to be trimmed is installed on the SiS156G Okamoto all-in-one machine, and it contacts the silicon carbide oilstone strip used to clamp the single crystal fixture. Dressing of the grinding wheel, but this method is only applicable to the case of a cup-shaped grinding wheel with an extremely low feed rate. An increase in the feed rate will cause a large force on each blade of the grinding wheel when it first contacts the whetstone strip, and the whetstone bar will produce slight damage in the process of dressing the grinding wheel. Due to the wear and tear, the force on the edge of the knife is small. Due to the difference in force, there will be a height difference in the position of the grinding wheel. After dressing, the grinding wheel is used to process single crystals, resulting in serious quality abnormalities. When measuring the thickness of the grinding wheel before grinding, a high value is measured. position, the device defaults to the thickness of the grinding wheel, but the lower part of the grinding wheel will grind this part of the single crystal size too large due to the small thickness; when measuring the thickness of the grinding wheel before grinding to a lower position, the device defaults to the thickness of the grinding wheel here, However, due to the high thickness of the grinding wheel, the size of this part of the single crystal is relatively small; therefore, the tool setting can only be trimmed with a feed rate of less than 0.04mm, which will inevitably result in a lot of man-hours for dressing in this way, reducing the The production capacity of SiS156G Okamoto all-in-one machine will eventually lead to higher costs