Single excitation ultrasonic elliptic vibration extrusion processing device

Abstract

The invention discloses a single excitation ultrasonic elliptic vibration extrusion processing device which comprises a supporting plate, a jacket, a linear bearing, a pre-pressure device, a housing unit, an ultrasonic vibration transducer arranged in the housing unit, an elliptic vibration mode converter and an extrusion head arranged at the front end of the elliptic vibration mode converter, wherein the supporting plate is arranged on the jacket; the housing unit comprises a front baffle, an inner sleeve and a rear baffle; the linear bearing is supported between the housing unit and the jacket; the pre-pressure device is arranged at the rear end of the housing unit in the jacket; the ultrasonic vibration transducer comprises a bolt as well as a rear cover plate, a piezoelectric ceramic piece, electrode plates and a front cover plate which sleeve the bolt in sequence; the rear cover plate, the piezoelectric ceramic piece, the electrode plates and the front cover plate are connected and compressed through the bolt; the elliptic vibration mode converter is arranged at the front end of the front cover plate, adopts a straight beam and oblique beam combined structure and can convert longitudinal ultrasonic vibration generated by the ultrasonic vibration transducer into longitudinal-flexural composite ultrasonic elliptic vibration of the tail end of the elliptic vibration mode converter and the extrusion head.

Description

technical field [0001] The invention relates to an ultrasonic vibration extrusion processing device suitable for ordinary lathes, ordinary milling machines, ordinary boring machines, and corresponding CNC machine tools, machining centers, etc., for strengthening and smoothing the inner and outer surfaces of parts, especially involving A single-excitation ultrasonic elliptical vibration extrusion processing device that provides an electric energy signal with one ultrasonic power supply. Background technique [0002] Extrusion processing is a commonly used process for surface strengthening and finishing. It is mostly used for processing the inner and outer surfaces of rotating parts. It is often used as the last machining process for parts with high requirements for surface strengthening, stress state and surface quality. occasions. Ordinary extrusion process has large extrusion force, severe friction, and low extrusion surface quality. Ultrasonic one-way extrusion process ha...

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Problems solved by technology

However, this device needs to use two sets of piezoelectric ceramics to excite two vibration modes with a certain phase difference, and each set of piezoelectric ceramics must be equipped with an ultrasonic drive power signal, and it is necessary to control each ultrasonic drive power signal The phase difference between the ultrasonic vibration system and the control system is complex, the manufacture is difficult, the control is difficult, the production cost is high, it is not easy to realize miniaturization, and the working performance is not stable enough. These problems restrict the ultrasonic elliptical vibration transducer in industrial production. Application and promotion in

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