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Extruded profile correcting die and correcting method thereof

A technology for extruding profiles and correcting shapes, which is applied in the direction of metal extrusion dies, etc., can solve problems such as poor forming accuracy, uneven wall thickness, collapse, etc., and achieve good consistency in forming accuracy, high quality stability, and simple methods Effect

Active Publication Date: 2021-03-12
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a method for correcting the shape of the extruded profile, which is used to solve the problem of strong tension between the blank, the extrusion cylinder and the extrusion die during the extrusion of large light alloy profiles. At the same time, the huge extrusion force will also have an impact on the core and other structures of the mold, resulting in poor forming accuracy such as local waves, collapse, uneven wall thickness, and excessive contour.

Method used

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  • Extruded profile correcting die and correcting method thereof
  • Extruded profile correcting die and correcting method thereof
  • Extruded profile correcting die and correcting method thereof

Examples

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Embodiment 1

[0039] A specific embodiment of the present invention discloses a shape-correcting mold for extrusion profiles, such as Figure 1-Figure 7 As shown, it includes: bulging tire 1, mandrel 2 and bulging petals. Wherein, the inflated tire 1 is covered on the outside of the extruded profile 13, and the mandrel 2 is sleeved in the circular cavity in the middle of the extruded profile 13, that is, the extruded profile 13 is arranged between the mandrels 2 of the inflated tire 1 The expansion valve is arranged in the side cavity of the extruded profile 13, and the side surfaces of the extruded profile 13 are avoided from being fitted with the expansion tire 1, the mandrel 2 or the expansion valve. The surface of the extruded profile 13 is pressed tightly, and the extruded profile 13 is corrected.

[0040] In a specific embodiment of the present invention, the extrusion profile precision shape correction die of the present invention also includes a positioning plate 12, specifically, ...

Embodiment 2

[0062] On the basis of the extrusion profile precision shape correction die of Example 1, in order to realize the shape correction of the extrusion profile 13 with a tapered cavity, in another specific embodiment of the present invention, the expansion valve includes a The sub-lobes of the solid conical structure and at least one non-slope solid cylindrical structure. When pressing in the expansion valve, put in the solid conical split valve with slope first, and then press into the solid cylindrical split valve without slope.

[0063] Furthermore, after the expansion petals are combined by a solid cylindrical structure without slope and at least one solid conical structure with slope, they can cooperate with the sloped cavity of the extruded profile 13 to realize different types of extruded profiles. High precision extrusion.

[0064] Specifically, the number of split lobes of the tapered solid conical structure is the same as the number of sloped surfaces of the cavity, tha...

Embodiment 3

[0067] Taking the large thin-walled multi-cavity extruded profile as an example, its shape is as follows Figure 8 As shown, the material is 6005A aluminum alloy, the wall thickness is 3mm, the cross-section width is 800mm, the height is 600mm, the length is 1000mm, and the precision of the surface contour is required to be ±0.5mm.

[0068] This embodiment provides a method for correcting the shape of an extruded profile shape correcting die, comprising the following steps:

[0069] Step S1: making a precise shape-calibrating mold for the extruded profile according to the profile of the extruded profile 13;

[0070] Step S2: Fix the inflated tire 1 and the mandrel 2 and place them on the workbench of the press; and press the extruded profile 13 into the space between the inflated tire 1 and the mandrel 2 through the press;

[0071] Step S3: Put the expansion flap into the cavity of the extruded profile 13;

[0072] Step S4: Fix the positioning plate 12 on the shape-correctin...

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Abstract

The invention relates to an extruded profile correcting die and a correcting method thereof, and belongs to the technical field of metal precision forming. The problems that in the prior art, in the profile extrusion process, a strong friction effect is generated among a blank, an extrusion cylinder and an extrusion die, meanwhile, extrusion force impacts structures such as a die core of the die,so that poor forming precision defects of local waves, collapse, uneven wall thickness, poor profile tolerance and the like are caused are solved. The correcting die comprises expanding tires, core shafts, expanding petals and positioning plates, the expanding tires, the core shafts and the expanding petals are arranged on the outer side of an extrusion profile and the inner sides of different cavities separately, the configuration of the extrusion profile and the forming precision of the inner cavities can be effectively guaranteed, and the high-precision forming requirement of the large complex-section extrusion profile is met; and by means of the extruded profile correcting die, high-precision forming of extruded profiles is achieved.

Description

technical field [0001] The invention relates to the technical field of metal precision forming, in particular to a shape-correcting mold for extrusion profiles and a shape-correcting method thereof. Background technique [0002] In recent years, aerospace, rail transit, petrochemical and other industries have higher and higher requirements for lightweight, complex and integrated manufacturing of parts and components. In order to meet the above requirements, large-scale lightweight alloy extrusion profiles are widely used. With the development of technology, thin-walled, complex cross-section and high-precision shape and dimension of large light-weight alloy extruded profiles have become important research topics in the industry. [0003] During the profile extrusion process, the billet enters the cavity of the extrusion die under the extrusion of the extrusion rod for shunt welding, and finally forms a profile with equal cross-section at the working zone of the lower die and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/02B21C23/00
CPCB21C25/02B21C23/002
Inventor 王胜龙王猛团李妍华郭晓琳李保永刘玉平吴顺通
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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