STUDY OF THE EFFICIENCY OF FLAT GRINDING WITH THE APPLICATION OF ULTRASONIC VIBRATIONS TO THE WORKPIECE
The use of energy of ultrasonic vibrations is one of the directions of increase of efficiency of processes of mechanical processing. To impose vibrations on the workpiece during grinding, a device is proposed in which it is one of the links of the oscillatory system. However, the effectiveness of the device is not fully revealed. The researches were carried out to assess the influence of the vibration amplitude and the operating time of the grinding wheel on the efficiency of grinding workpieces using the proposed device. The possibility of increasing the efficiency of flat grinding by using the energy of ultrasonic vibrations (UZK), superimposed on the workpiece in the direction coinciding with the axis of the grinding wheel. To impose vibrations used a device in which the workpiece is fixed between the oscillator and the support, ie is one of the links of the oscillatory system. The design of the device provides a minimum loss of energy UZK and the maximum amplitude of the narrow oscillation of the workpiece. Fluctuations in the direction coinciding with the axis of the circle, as studies have shown, provide the most favorable indicators of grinding. Experimental studies were performed with grinding of the periphery of the round billets of steel 12KH18N10T and 3KH3M3F.The change of parameters of the grinding process depending on the amplitude of the narrow UZK and the operating time of the grinding wheel. When grinding UZK with a narrow grinding force is reduced by 10 ... 15%, wheel wear by 25 ... 40%, the height parameters of the roughness of the treated surface by 25%; grinding coefficient increases to 70%, and the period of resistance of the circle in 3 ... 3.5 times.