Grinding Tools that Contain Uniform Distribution of Abrasive Grits and Method of Manufacture Thereof

Abstract

The present invention relates to a method of uniformly distributing abrasive grits on grinding tools. It can be applied in the cutting, grinding segments of diamond tools, which are typically used in cutting and drilling various hard and fragile materials, such as granite, marble, concrete, asphalt, etc. The present invention provides a template, the template designed based on the arranging requirement of abrasive particles such as diamond grits. The template can adsorb only a single layer of abrasive particles and is then placed onto a sheet, where the diamond grits are pressed into the sheet, with the diamond grits distributed uniformly on the sheet.

Description

RELATED APPLICATIONS[0001]This is a continuation of International Application PCT / CN2008 / 000331, with an international filing date of Feb. 13, 2008.FIELD OF THE INVENTION[0002]The present invention relates to the cutting and grinding tools, such as the cutting segments of diamond tools, which are typically used in cutting and drilling various hard and fragile materials, such as granite, marble, concrete, asphalt, etc. More particularly, the present invention relates to the uniform distribution of abrasive particles such as diamond grits on the segments of cutting tools to increasing the cutting efficiency.BACKGROUND OF THE INVENTION[0003]Synthetic diamonds are the hardest abrasive material currently known, and they have been widely used as super-abrasives on cutting and grinding tools. Diamond tools are particularly used to cut and grind rocks in machining stone and other structural components. Diamond tools mainly have cutting segments on which diamonds or other abrasive particles ...

AI Technical Summary

Benefits of technology

[0013]The distance between diamond or other abrasive particles determines the work load each particle will perform. Improper spacing of the abrasive particles will lead to premature failure of the abrasive surface or structure. If the abrasive particles are too close to one another, some of the particles are redundant and add to the cost. Moreover, these non-performing particles can block the passage of debris, thereby reducing cutting efficiency.

[0014]If the diamond grits are uniformly distributed, the distance between the grits will be optimized according to the cutting materials and cutting conditions. It has be found that in practice, 85% of the distances between diamond grits on uniform distributed saw blade are 2 mm-5 mm, while on traditional saw blades, this percentage is only 60%. The increasing of diamond content weakly affects the work load, but the applicable cutting times are lengthened markedly, thus the cutting efficiency is increased and useful time of the saw blade is lengthened.

[0016]The exposed height of diamond particularly affects the sawing efficiency and the useful time of the saw blade, it is rest with the size and the distribution of diamond and the hold of the sheet. So, the uniform distribution of diamond or other abrasive particles on matrix will markedly affect the cutting and grinding tools. The object of the present invention is to provide a method of arranging the abrasive particles uniformly on cutting and grinding tools, and the method can be industrialized.

[0036]Therefore, the present invention provides a template, the shape and the pattern of the template can be designed conveniently on the arranging requirement of abrasive particles, and the template can adsorb only single layer of abrasive particles, place the template with uniformly distributed abrasive particles into or adhere to sheet, then will form a sheet with uniformly distributed abrasive particles, thus the position of abrasive particles can be located exactly on the sheet on predetermination. The abrasive particles can be uniformly distributed, or arranged on the requirement of accounted cutting force of provided cutting and grinding tools, For example, higher concentration diamond grits are preferred in the edge and front of saw, while in the middle, the lower concentration diamond grits are preferred.

[0037]In practice, compared with irregularly distributed diamond saw blade, the saw blade with uniformly distributed diamond grits has a lower concentration diamond grits, the practical cutting distance is 1150 m (the distance of irregularly distributed diamond saw blade is 450 m), the blade cuts smoothly and there is not collapse piece of blade, the sum power consumption of abrasive tools decrease 30 percents, the noise of perigee decrease 10 db(A), cutting efficiency increase 30 percents, and the useful life is three times longer than those irregularly distributed diamond saw blade.

Problems solved by technology

Improper spacing of the abrasive particles will lead to premature failure of the abrasive surface or structure.

If the abrasive particles are too close to one another, some of the particles are redundant and add to the cost.

Moreover, these non-performing particles can block the passage of debris, thereby reducing cutting efficiency.

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