Abstract
This research includes the analysis of kinematic relations between abrasive disk grains and the workpiece in the abrading process while applying ultrasonic vibrations (USV) on the workpiece. Supposition, that applying vibrations lied in axes of abrasive disk increases efficiency of disk grinding, has been set. Analytical approach showed dependences for calculating the grinding force. These dependences include changing of disk grains microcutting kinematics and mechanical characteristics of workpieces while applying USV. The technique of pilot studies is given. For imposing on preparation of USV used the device in which it was one of links of oscillatory system that provides the minimum losses of energy USV and high amplitude of fluctuations of preparation. Field researches have shown, that applying USV lied in axes of abrasive disk decreased the grinding force, the wear of disk, and high-level parameters of the processed surface roughness.
Highlights
Process of grinding of tough material workpieces has high intensity of wearing and loading during grinding of disk working surface; it causes a high heating rate
A significant amount of works is directed to studying of kinematics of grinding, only in the few the kinematics with imposing of ultrasonic vibrations (USV) is analyzed
Where l2r – size of cutting abrasive grains (AG) blunting area, m; μs – internal friction coefficient of processing material; K2UZ – dependence component, that includes changing of microcutting kinematics while applying USV
Summary
Process of grinding of tough material workpieces has high intensity of wearing and loading during grinding of disk working surface; it causes a high heating rate. This factor makes difficult to have high quality surface while high productive process. The lack of analytical researches complicates development of the recommendations concerning use of USV for increase in efficiency of process of grinding. For achievement of goals the following problems were solved: - analytical researches of kinematics of interaction of AG of a circle with preparation and grinding forces with imposing of USV; - pilot studies of efficiency of process of grinding with imposing of USV; - analysis of results and development of recommendations about application of USV
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