High-frequency flutter cold extruding die

A technology of cold extrusion and flutter, applied in the direction of metal extrusion dies, etc., can solve the problems that large-scale parts cannot be vibrated at high frequencies, and the dimensional accuracy of formed parts cannot be guaranteed, and achieve simple structure, large output force, Effect of High Vibration Frequency

Active Publication Date: 2012-04-04
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • High-frequency flutter cold extruding die
  • High-frequency flutter cold extruding die
  • High-frequency flutter cold extruding die

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the drawings.

[0028] Reference Figure 1 ~ Figure 7 , A high-frequency flutter cold extrusion die, including a forming mechanism, the forming mechanism includes a male mold 3 and a female mold 6, the male mold 3 is fixedly connected to the upper mold plate 1, and the female mold 6 is located in the male mold 3. Immediately below, the die 6 is installed in the die sleeve 9. The high-frequency flutter cold extrusion die also includes a flutter generating mechanism that includes a vibrating table and a high-frequency valve. The vibrating table includes an upper plate 10 and a lower plate 11. The upper plate 10 is provided with a boss in the middle, and the boss is fixedly connected to the female mold sleeve 9, and the upper plate around the boss is provided with a vertically symmetrical annular groove 14. The cross-section of the annular groove 14 is arc-shaped, and a lower groove is provided in the m...

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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 volume of auto parts is getting larger and larger, and cold extrusion technology is also showing its talents here. More and more auto parts are required to change from cutting technology to cold extrusion processing. Compared with cutting parts, cold extruded parts have continuous metal fiber streamlines and higher mechanical strength, especially in the tooth-shaped parts that are used more in automobiles, and the tooth profile is basically unnecessary after cold extrusion. Machining or just leaving the amount of grinding processing, 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, when the blank is formed, the deformation resistance rises ...

Claims

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Application Information

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IPC IPC(8): B21C25/02
Inventor 杨庆华阮健孟彬陈鑫
Owner ZHEJIANG UNIV OF TECH
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