High-frequency flutter cold extruding die

Abstract

The invention discloses a high-frequency flutter cold extruding die, which comprises a forming mechanism. A male die is fixedly connected with an upper template; a female die is positioned under the male die and is arranged in a female die sleeve; a flutter generation mechanism comprises a vibration table and a high-frequency valve, wherein the vibration table comprises an upper plate and a lower plate; a lug boss is arranged in the middle of the upper plate and is fixedly connected with the female die sleeve; a vertically-symmetrical annular groove is arranged on the upper plate around the lug boss; the section of the annular groove is in an arc shape; a lower groove is arranged in the middle of the upper surface of the lower plate and is communicated with an annular groove on the lower surface of the lower plate; the upper plate is in fixed sealing connection with the lower plate through a fastener; the fastener is positioned at an outer circle of the annular groove; the lower plate is provided with an oil passage through which hydraulic oil enters or exits; one end of the oil passage is communicated with the lower groove; the other end of the oil passage is communicated with the high-frequency valve; and the lower plate is fixedly connected with a lower template. According to the high-frequency flutter cold extruding die disclosed by the invention, enough vibration output force, higher vibration frequency and lower amplitude can be provided; and dimensional precision of complex parts can be ensured while the vibrated extrusion of the complex parts are finished.

Description

technical field [0001] The invention relates to a cold extrusion die. Background technique [0002] With the rapid development of China's automobile industry, the batches of auto parts are getting larger and larger, and cold extrusion technology is also showing its talents here. More and more auto parts require changing from cutting technology to cold extrusion processing. Compared with cutting parts, cold extrusion parts have continuous metal fiber streamlines and higher mechanical strength, especially for tooth-shaped parts that are widely used in automobiles. Processing or just leaving the amount of grinding, and the material utilization rate and production efficiency are high, and the product quality is relatively stable. [0003] However, during cold extrusion processing, due to the high flow stress of the material at room temperature, the deformation resistance rises sharply (up to 2000MP or even higher) when the billet is formed, and the friction between the die and ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the existing high-frequency cold extrusion dies that cannot realize the high-frequency vibration of large-sized parts and the dimensional accuracy of the formed parts cannot be guaranteed, the present invention provides a device that can provide sufficient vibration output force and high vibration Frequency and small amplitude, high-frequency flutter cold extrusion die that can ensure the dimensional accuracy while completing the vibration extrusion of complex parts

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