Petal-shaped corrugated pipe forming method

A corrugated tube and petal-shaped technology, which is applied in the field of petal-shaped corrugated tube forming, can solve problems affecting the performance of corrugated tubes, complex tooling design, and scratches on corrugated tubes, and achieve good product size consistency, reduce surface damage, and process good flexibility

Active Publication Date: 2021-03-12
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The invention provides a method for forming a petal-shaped corrugated pipe, which solves or partially solves the complicated design and high cost of the tooling for preparing the petal-shaped corrugated pipe in the prior art, which is easy to form scratches on the surface of the corrugated pipe and affects the performance of the corrugated pipe. question

Method used

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  • Petal-shaped corrugated pipe forming method
  • Petal-shaped corrugated pipe forming method
  • Petal-shaped corrugated pipe forming method

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Embodiment Construction

[0024] see Figure 1-4 , a petal-shaped bellows forming method provided by an embodiment of the present invention includes:

[0025] Obtain the unfolding material 1.

[0026] Set n gate pressure lines 2 on the unfolded material, the distance between every two adjacent gate pressure lines in the n gate pressure lines 2 matches the half-wave expansion length of the bellows, and n is a positive integer.

[0027] The developed material 1 is placed on the two lower die mandrels 3-1 of the lower die forming mold 3, and the developed material is supported by the two lower die mandrels 3-1, wherein the mth gate pressure of the n gate pressure lines 2 The line is aligned with the axis of one of the two die mandrels, and m is an odd number greater than 1.

[0028] Operate the upper mold forming die 4 to move between the two lower mold mandrels 3-1, press the gate to expand the material 1, until all the corrugations 5 on the expanded material 1 are formed, and the parts are obtained. ...

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Abstract

The invention discloses a petal-shaped corrugated pipe forming method, and belongs to the technical field of metal plastic forming. The petal-shaped corrugated pipe forming method comprises the stepsthat n brake pressing lines are arranged on an unfolding material, the distance between every two adjacent brake pressing lines in the n brake pressing lines is matched with the half-wave unfolding length of a corrugated pipe, and n is a positive integer; the unfolded material is placed on two lower die mandrels of a lower die forming die, the unfolded material is supported through the two lower die mandrels, the mth brake pressing line in the n brake pressing lines is aligned with the axis of one lower die mandrel in the two lower die mandrels, and m is an odd number larger than 1; and an upper die forming die is operated to act between the two lower die mandrels, the unfolded material is braked and pressed till all ripples on the unfolded material are formed, and a part is obtained. According to the petal-shaped corrugated pipe forming method provided by the invention, different types of petal-shaped corrugated pipes can be formed, the machining flexibility is good, the cost is low,operation is easy and reliable, and the product size consistency is good.

Description

technical field [0001] The invention relates to the technical field of metal plastic forming, in particular to a petal-shaped bellows forming method. Background technique [0002] The bellows is a flexible, thin-walled and transversely corrugated tube and shell part. It is allowed to produce large deformation under the action of axial force, lateral force and bending moment during operation, and has the characteristics of high strength and flexibility. The shape is complex, the precision is high, and the surface quality is high. During the forming process, the surface is not allowed to be strained. After being formed by the usual forming die forming method, the surface of the bellows is severely strained, and the shape and position tolerance is difficult to meet the requirements of the design drawings. . [0003] Commonly used forming methods for bellows include hydraulic bulging and stamping. However, the petal-shaped corrugated pipe is prepared by hydraulic bulging, and ...

Claims

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Application Information

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IPC IPC(8): B21D15/04
CPCB21D15/04
Inventor 朱婷婷施国宏张建华王维新於喆刘礼军熊舒雅
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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