External pressure forming device for viscous medium of large-curvature thin-wall component
A technology for viscous medium and thin-walled components, which is applied in the field of external pressure forming devices for viscous medium of large-curvature thin-walled components, can solve problems such as lack of forming devices, and achieve the effects of simple structure, improved plate formability, and good control stability.
Active Publication Date: 2019-04-26
HARBIN INST OF TECH
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Problems solved by technology
However, there is a lack of corresponding forming devices
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[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0027] see Figure 1-Figure 8 , a large-curvature thin-walled component viscous medium external pressure forming device, the device includes a viscous medium injection loading die 1, a die 2, a mandrel 3, a viscous medium injection cylinder 4, a loading die seal ring 5, a barrel blank 7, a viscous medium The loading power source hydraulic c...
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The invention relates to the field of thin-wall component manufacturing for aerospace equipment, in particular to an external pressure forming device for a viscous medium of a large-curvature thin-wall component. The external pressure forming device comprises a viscous medium injection loading die, a forming die, a core shaft, a viscous medium injection cylinder, a loading die sealing ring, a cylinder blank, a viscous medium loading power source hydraulic cylinder and a viscous medium injection loading die end part sealing loading power source hydraulic cylinder. According to the device, viscous medium injection pressure is provided through a power control system, and viscous medium loading pressure is controlled; viscous media are applied to a forming blank through injection channels andgenerate forming force on the forming blank, different numbers of injection channels in different shapes can be arranged according to the shape and the wall thickness of the forming part, external pressure forming pressure loading of the viscous media can be effectively controlled, the stress state of the blank of a control panel is achieved, the blank reasonably deforms and flows, and the formability of plates is improved. The device is simple in structure, easy to operate, good in control stability and capable of effectively carrying out external pressure forming on the viscous media.
Description
technical field [0001] The invention relates to the field of forming and manufacturing thin-walled parts of aerospace equipment, in particular to a large-curvature thin-walled component external pressure forming device for viscous medium. Background technique [0002] Large-curvature thin-walled components are a typical shell structure, which are often used in thermal protection systems in aerospace, aerospace and industrial thermal engineering fields. At present, the commonly used method for processing such parts is to perform simple soft mold compression forming on the deformation area. When the two ends of the billet are not constrained, since the two ends of the billet are in a free state, the effect of the adhesive stress of the cylindrical material on the viscous soft mold material Flow downward to the deformation zone, if the supplemented material is greater than the increase of the surface area, under the action of the hoop compressive stress, defects such as instabi...
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IPC IPC(8): B21D26/021B21D26/029B21D26/031
CPCB21D26/021B21D26/029B21D26/031
Inventor 王忠金冯业坤蔡舒鹏
Owner HARBIN INST OF TECH