Bending mould of forming straight circular tube and incremental forming method

A round pipe and mold technology, which is applied in the fields of high strength and high resilience titanium alloy to be continuously bent into straight round pipes in multiple steps at room temperature, combined bending molds and progressive forming, and sheet metal bending forming, can solve the problem of Insufficient deformation of the material, inability to overcome springback, uneven deformation, etc., to achieve the effect of solving bending interference, simple and reasonable structure, and easy promotion and realization

Inactive Publication Date: 2015-07-01
XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the defect that the traditional method of forming a titanium alloy straight tube cannot overcome the rebound, the purpose of the present invention is to provide a combined bending die and a progressive forming method for forming a straight tube; the method adopts a hollow detachable composite structure The upper mold solves the problem of part bending interference and mold separation; by controlling the lowering height of the upper mold, it solves the problem of insufficient material deformation and uneven deformation

Method used

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  • Bending mould of forming straight circular tube and incremental forming method
  • Bending mould of forming straight circular tube and incremental forming method
  • Bending mould of forming straight circular tube and incremental forming method

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Embodiment Construction

[0019] Referring to the accompanying drawings, a bending die for forming straight round pipe parts, the die contains an upper die 1 and a lower die 2, the upper die 1 is a combined structure, composed of a die handle 4 and a forming punch 5, the die The handle 4 is a strip structure with a T-shaped cross-section. The two ends of the mold handle 5 are provided with connecting holes 7. The forming punch 5 is a strip structure with a hammer-shaped cross-section. The connecting hole 7 corresponding to the die handle, the die handle 4 and the forming punch 5 are connected through the connecting block 3 with the upper and lower connecting holes 7 and the connecting pin 9, and the cross section of the connecting block 3 is an H-shaped structure with upper and lower mounting grooves , the two ends of the upper mold and the lower mold are respectively plugged into the upper and lower installation grooves of the connecting block, and then connected through the connecting holes with the c...

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Abstract

Provided are a bending mould of a forming straight circular tube and an incremental forming method. The mould comprises an upper mould body and a lower mould body. The upper mould body is of a composite structure and is composed of a mould handle and a forming male mould, the mould handle is of a strip-shaped structure with a T-shaped section, the two ends of the mould handle are provided with connecting holes, the forming male mould is of a strip-shaped structure with a hammer-shaped section, the two ends of the forming male mould are provided with connecting holes corresponding to the mould handle, and the mould handle is connected with the forming male mould through connecting blocks with upper and lower connecting holes and connecting pins. The lower mould body is in the shape of a cuboid with grooves, and the grooves are corresponding to the position of the forming male mould.

Description

technical field [0001] The invention relates to a sheet metal bending forming technology in the field of aircraft manufacturing, specifically a bending combined mold and a progressive forming method, especially suitable for multi-step continuous bending forming of high-strength and high-resilience titanium alloys at room temperature. Straight round tube. Background technique [0002] In the field of aircraft parts manufacturing, as users have increasingly stringent requirements on aircraft life, weight reduction effects, and fuel economy; titanium alloys are more and more favored by aircraft developers for their light weight, excellent rigidity and strength. It is known that the mechanical characteristics of titanium alloys are high strength and large springback; sheet metal forming often requires a greater amount of deformation to make it rebound to obtain the desired shape; often high temperature heating is used to reduce springback and required deformation, making forming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D5/10
CPCB21D37/10B21D5/10
Inventor 白颖倪兴屹李世峰惠小鹏范子翠赵平
Owner XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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