Comparing the performance of diamond wheels in terms of the density of cutting grains

Abstract

In the laboratory and in production conditions, it is often necessary to compare the performance of dia� mond grinding wheels and select the best for future use. For example, in production conditions, the perfor� mance of wheels from different manufacturers in the sharpening of saws may need to be compared. In the laboratory, the performance of wheels may be compared in the creation of new binders. In production condi� tions, however, it is practically impossible to ensure identical conditions and identical duration of the wheel tests, Laboratory tests in compliance with State Stan� dard GOST 16181–82 are relatively laborious. Accordingly, the number of cutting grains per unit area of the wheel’s working surface (the density of the cutting grains) has been proposed as the basis for accelerated assessment of wheel performance. Research is required to verify that approach. The performance of diamond grinding wheels may be characterized by the relative consumption q of dia� monds, determined by the method in State Standard GOST 16181–82. Tests are conducted on a V3�318E universal sharpening machine with hydraulic longitu� dinal supply. The grinding depth is established manu� ally and measured by means of an indicator with a 0.002�mm scale division. The speed of the diamond wheel is monitored by means of a TCh10�R tachome� ter. The relative consumption q of diamonds is deter� mined by weighing on VLT�1�1 scales (error 0.01 g). To find the mean value of q, each experiment is repeated five times. The number N of cutting grains is determined within the field of view of the microscope