Ultrasonic vibration screening structure and machining method

The invention discloses an ultrasonic vibration screening structure and a machining method, the ultrasonic vibration screening structure comprises a concave supporting block and a screening supporting bracket, a telescopic moving structure is mounted on the inner side of the concave supporting block, and a quantitative feeding structure and an ultrasonic vibration structure are mounted on the screening supporting bracket; the device has the beneficial effects that the device can be moved to different positions according to different requirements through the telescopic moving structure, so that the movable supporting effect is achieved, raw materials are quantitatively fed through the quantitative feeding structure, meanwhile, the raw materials are magnetically driven to rotate forwards and backwards at a high speed through the ultrasonic vibration structure, and the working efficiency is improved. Meanwhile, through lifting vibration in a certain range in the vertical direction, positive and negative centrifu