Design of an ultrasonic machining system based on a special grinding wheel

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (18) : 132-137.

TANG Jun 1 ZHAO Bo 2

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Abstract

In the process of the ultrasonic assisted grinding of carbon fiber composites, the self-sharpening of the grinding wheel can be guaranteed, and the producing of defects of the carbon fiber composites can be suppressed.Therefore, an ultrasonic machining system, suitable for machining the special-shaped and deep cavity combustion chambers of a supersonic propeller, was investigated.Based on the one-dimensional vibration theory and the thin plate vibration theory, the frequency equations for a muti-section horn and a special grinding wheel were established, and the ultrasonic machining system with the special grinding wheel was created by using the software MATLAB 7.1.Then, the finite element analysis and natural frequency test of the designed ultrasonic machining system were carried out, and the results show that the frequency error between the analysis and test results is less than 1.4%.An example workpiece made of carbon-fiber composite was processed with the designed ultrasonic assisted grinding system, and better machining results were obtained.

Key words

ultrasonic machining / special grinding wheel / carbon fiber composite / finite element analysis

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TANG Jun 1 ZHAO Bo 2. Design of an ultrasonic machining system based on a special grinding wheel[J]. Journal of Vibration and Shock, 2018, 37(18): 132-137

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