Impact hydraulic expansion system for metal thin-walled pipes
A technology of hydraulic bulging and metal thinning, which is applied in the field of hydraulic bulging of thin-walled metal tubes. It can solve the problems of cumbersome operation, low liquid injection efficiency, and complicated devices, and achieve high hydraulic bulging efficiency, easy operation, and prevention of local shrinkage. thin effect
Active Publication Date: 2014-12-24
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology
This method has the disadvantages of low liquid injection efficiency, cumbersome operation, and complicated equipment.
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[0023] Upper mold 8 is installed in the middle of upper workbench 12 lower sides, and there are inclined sliders 11 fixed on upper workbench 12 two ends on both sides of upper mold 8 .
[0024] A positioning formwork 10 is fixed above the lower workbench 3, a liquid container 6 is arranged in the middle of the positioning formwork 10, and a side door 4 is arranged on the side of the liquid container 6, and the lower mold 1 for axially installing the metal thin-walled pipe 7 is arranged on the Put in the liquid container 6, the metal thin-walled horizontal guide post 9 that is used to withstand metal thin-walled tube 7 two ends nozzles is arranged on both sides of lower mold 1.
[0025] The two sides of the liquid container 6 are provided with a limited space 19 outside. There is a hole on the side wall of the limiting space 19, an anti-rotation slider 18 and a linear bearing 15 are arranged on the hole wall, and the horizontal guide post 9 passes therethrough, and the horizon...
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The invention discloses an impact hydraulic expansion system for metal thin-walled pipes. The system comprises an upper working platform and a lower working platform. An upper die is mounted on the middle of the bottom of the upper working platform, and inclined sliders which are fixed on both ends of the upper working platform are arranged at both sides of the upper die. A positioning die set is fixed on the top of the lower working platform, a liquid container is arranged in the center of the positioning die set, the side of the liquid container is provided with a side door, a lower die which is used for axially mounting a metal thin-walled pipe is arranged in the liquid container, and horizontal guide posts which are used for holding the orifices of both ends of the metal thin-walled pipe are arranged at both sides of the lower die. An anti-rotation slider, a linear bearing and a restoring spring are arranged on the outer end of each horizontal guide post. The system does not need a special internal pressure source, is simple and easy to implement, and has high hydraulic expansion efficiency. In the process of impact expansion, a metal thin-walled pipe can be automatically fed axially, and can be prevented from being thinned partially. Different metal thin-walled pipe shapes can be formed as long as the upper die and the lower die are replaced, operation is simple, the structure is simple, and the cost is low.
Description
technical field [0001] The invention relates to a hydraulic bulging technology for thin-walled metal tubes, in particular to an impact hydraulic bulging system for thin-walled metal tubes. Background technique [0002] Hydraulic bulging of thin-walled metal pipes is a forming technology that plastically deforms thin-walled metal pipes through internal pressure and fits them with molds. Metal thin-walled tube hydraulic bulging technology has the advantages of simple process, less process, high material utilization rate, high part rigidity and light weight. It has been more and more widely used in industries such as automobile, aerospace, aviation, home appliances and construction. [0003] At present, the hydraulic bulging of metal thin-walled tubes can be achieved by using a special internal pressure source to provide high pressure inside the tube, but the equipment is relatively large and the cost is high. It can also be filled with liquid containers, such as the patented [...
Claims
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IPC IPC(8): B21D26/033B21D26/047
Inventor 刘建伟李玉寒武敏建黄承明周荣秦王开明佘雨来
Owner GUILIN UNIV OF ELECTRONIC TECH