Electroplastic rotary pressing device

A technology of electroplasticity and energization device, applied in the field of electroplastic spinning device, can solve the problems of reducing plastic deformation resistance, poor plasticity, etc., and achieve the effects of reducing plastic deformation resistance, improving efficiency, and low cost and energy loss

Inactive Publication Date: 2013-12-11
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that may arise in the existing heat treatment technology, the present invention provides an electroplastic spinning device, which increases the ductility of the spinning blank and reduces the plastic deformation resistance in the spinning process by introducing the electroplastic effect of the metal material , so that some materials with poor plasticity or not suitable for heat treatment can be formed by spinning. On the other hand, the partial electrification treatment is adopted for the spinning blank, which is consistent with the characteristics of local plastic deformation of spinning. Compared with heat treatment, Can reduce costs and energy consumption

Method used

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  • Electroplastic rotary pressing device
  • Electroplastic rotary pressing device
  • Electroplastic rotary pressing device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] Such as figure 1 As shown, this embodiment includes: a main shaft 1, a rotary wheel 2, a blank 3, a power supply 4, a pulse power supply 5, a spring 6, a conductive rod 7, a spinning frame 8 and a wire 9, wherein the external pulse power supply 5 passes through the wire 9 It is connected to the energizing device 4, and the two energizing devices 4 are respectively connected to the positive and negative poles of the pulse power supply 5.

[0024] Such as figure 2 As shown, there are two electrification devices 4, which are distributed on one side of the rotary wheel 2, and are on the same plane as the rotary wheel 2. The devices 4 are all fixed on the wheel frame 8 so that they can move synchronously with the wheel 2 .

[0025] Such as image 3 As shown, the shell of the energizing device 4 is insulated, and there is a conductive rod 7 inside. The head of the conductive rod 7 is hemispherical, so that it can form surface contact with the blank 3 under pressure, and t...

Embodiment 2

[0029] In this implementation example, the blank to be processed is a tungsten-copper refractory alloy, which is circular, with a diameter of 1100mm and a thickness of 1.5mm. The process parameters of the continuous pulse power output pulse current are: peak current 2000A, frequency 300HZ, pulse width 40μs , duty cycle 10%.

[0030] This embodiment is the same as other implementations of Embodiment 1.

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Abstract

The invention provides an electroplastic rotary pressing device which comprises two or multiple electrifying devices, wherein the electrifying devices are positioned on the same plane with a rotating wheel and positioned on the same side of the rotating wheel, the electrifying devices are fixed relative to the rotating wheel and can move synchronously along with the rotating wheel, the electrifying devices are connected with a pulse power supply, and when the rotating wheel is used for pressurizing a blank, the electrifying devices are in contact with the blank for conducting continuous electric pulses to the blank. The invention further provides an electroplastic rotary pressing method for the electroplastic rotary pressing device, which comprises the following steps: A) fixedly placing the blank in a processing position; B) enabling the blank to rotate along with a main shaft of a machine tool, and enabling the rotating wheel to start to do radial feed motion; and C) enabling the electrifying devices to be in contact with the blank for conducting current to the blank when the rotating wheel is used for pressurizing the blank.

Description

technical field [0001] The invention relates to the technical field of spinning forming in plastic processing, in particular to an electroplastic spinning device. Background technique [0002] Spinning is an important forming technology in the field of plastic processing. The traditional spinning technology uses the feed motion of tools such as rotary wheels to pressurize the blank that is rotating along the same axis with the spindle of the random machine to produce continuous local plastic deformation, thereby obtaining hollow rotary parts. In order to reduce the increase of deformation resistance caused by work hardening, the existing method is generally to perform heat treatment to ensure the plastic deformation ability of subsequent processing, reduce the deformation resistance, and optimize the structural properties at the same time. However, this method faces some problems, because the nature of some materials determines that they are not suitable for heat treatment....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/14
Inventor 沈耀马佳伟吕智李奥金学军
Owner SHANGHAI JIAOTONG UNIV
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