An electro-hydraulic chatter table for cold extrusion vibration processing

Abstract

The invention provides an electric liquid type fluttering platform used for cold extruding vibration machining. The electric liquid type fluttering platform comprises a cylinder barrel, a piston, a piston rod, a mold base connected with a mold and a cylinder barrel base connected with a hydraulic machine, wherein the upper end of the piston rod is fixedly connected with the mold base; the piston rod sequentially penetrates through central through holes of a cylinder barrel top cover, the piston and the cylinder barrel base from top to bottom; the piston is fixed on the piston rod in a sealed manner; symmetrical grooves are formed in upper and lower faces of the piston; the cylinder barrel top cover and the cylinder barrel base are fixed at the upper and lower ends of the cylinder barrel in a sealed manner respectively; the piston rod, the cylinder barrel top cover and the cylinder barrel base are in dynamic sealing fit; an outer ring of the piston is in sealing fit with an inner wall of the cylinder barrel; a first oil opening P1 and a second oil opening P2 are formed in the upper and lower ends of the side face of the cylinder barrel respectively; the first oil opening P1 is communicated with an upper cavity of the groove in the upper face of the piston; and the second oil opening P2 is communicated with a lower cavity of the groove in the lower face of the piston. According to the electric liquid type fluttering platform used for the cold extruding vibration machining, enough excitation force and frequency can be provided and the amplitude is controllable.

Description

technical field [0001] The invention belongs to the technical field of cold extrusion, in particular to a vibration table used for cold extrusion vibration processing. Background technique [0002] Because cold extrusion has many advantages such as "high production efficiency, high material utilization rate, and good part performance", it has been widely used in industrial production. However, during cold extrusion processing, due to the high flow stress of the material at room temperature, the deformation resistance rises sharply when the billet is formed, and the friction between the mold and the billet also hinders the flow of the metal billet. Not only that, the high Deformation resistance and friction have stricter requirements on the tonnage of the press and the mold. [0003] With the continuous exploration of this problem, people have found that introducing high-frequency vibration into the forming process of wire and pipe drawing can effectively reduce the forming ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of insufficient output excitation force and uncontrollable amplitude of the existing vibration mode based on hydraulic drive, the present invention provides a vibration process for cold extrusion that can provide sufficient excitation force and controllable frequency and amplitude. electrohydraulic flutter table

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