Abstract
The issues of the influence of the orientation and shape of grinding grains of coated abrasive tools on their basic performance characteristics are considered in the article. The advantages of machining with flexible grinding tools are listed. The features of the abrasive grains contained in tools on a flexible basis are presented. The low efficiency of using standard tools is justified. A method is described for increasing the efficiency of the grinding process with tools on a flexible basis due to an integrated approach to the design of new tool designs. It is proposed to use abrasive grains of a given shape and oriented in a certain way relative to the surface of the tool base. The main stages of work related to the development of new tool designs and studies of their operational characteristics are presented. Experimental data of the dependencies of cutting capability, wear, temperature in the cutting zone, power spent on cutting, and the cut surface quality on the shape and the orientation angle of grinding grains are presented. Practical recommendations for the application of tools containing in their structure certain varieties of grinding grains are proposed.
Highlights
Grinding of parts with coated abrasive tools, such as sanding belts and flap wheels, has found wide distribution in many industries
A distinctive feature of coated abrasive tools is the working conditions of grains, which, as a rule, is levelled in height during operation and evenly distribute the load among them, which has a positive effect on the grinding process [1-4]
This approach to the design and manufacture of grinding tools leads to the fact that most of abrasive grains do not participate properly in the cutting process [12-15]
Summary
Grinding of parts with coated abrasive tools, such as sanding belts and flap wheels, has found wide distribution in many industries This type of grinding has a number of advantages, such as the grinding surface elasticity, the low power loads, and the low heat density of the process. Despite the large number of advantages presented above, there is a relatively low efficiency in the use of the potential capacities of coated abrasive tools, as well as of any other abrasive tools In many ways, this result is predetermined by the use of standard abrasive in the manufacture of tools, when the shape and orientation parameters of grains relative to the substrate are not taken into account [5-11]. This design activity has great relevance and practical significance, since fuller use of the potential of each individual grain in the structure of the tool allows achieving higher grinding performance
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