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Discontinuous contact incremental forming method and product of sheet metal driven by equal-diameter spiral trajectory

A progressive forming and discontinuous technology, which is applied in the field of discontinuous contact progressive forming and products driven by equal-diameter spiral trajectory, can solve the problems of forming limit angle, increasing external force of sheet forming, and large frictional resistance, etc., to achieve The effect of reducing the degree of thinning and improving formability

Active Publication Date: 2019-07-02
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The thickness of ordinary continuous contact incremental forming products conforms to the sine law, and there is a forming limit angle
In addition, the friction resistance along the feed direction is relatively large, which increases the external force required for sheet metal forming

Method used

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  • Discontinuous contact incremental forming method and product of sheet metal driven by equal-diameter spiral trajectory
  • Discontinuous contact incremental forming method and product of sheet metal driven by equal-diameter spiral trajectory
  • Discontinuous contact incremental forming method and product of sheet metal driven by equal-diameter spiral trajectory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The implementation process of discontinuous contact incremental forming driven by equidiametric spiral trajectory is as follows: figure 1 As shown, as follows:

[0069] (1) Establish a three-dimensional CAD model of a conical cup with a side wall inclination angle of 60°, a radius of 100 m, and an opening size of 100 mm in UGNX8.0 software.

[0070] (2) The machining module in UGNX8.0 software generates the machining trajectory of continuous contact incremental forming.

[0071] (3) Set the accuracy of the incremental forming processing trajectory to 0.02 mm, and output the continuous processing trajectory in the form of discrete points through calculation.

[0072] (4) Interpolate the processing trajectory points output in step (3), and set the number of trajectory points that each helical lead should meet to be 18, and obtain the space of the new processing trajectory point i through the Lagrange linear interpolation method The coordinates are (x i ,y i ,z i ); ...

Embodiment 2

[0083] A sheet-shaped formed part, that is, the above-mentioned product, is obtained by using the non-continuous contact sheet metal incremental forming method driven by the equal-diameter spiral trajectory described in Implementation 1. After using steps (1)-(8) to obtain the corresponding program, then use an industrial pure aluminum 1060 plate with a thickness of 1mm to cut the plate into 230×230mm, so that the geometric center of the plate coincides with the geometric center of the forming fixture , press the plate around 15mm and clamp it; the forming tool is gradually formed point by point according to the equal-diameter spiral trajectory data generated in step (8) under the control of the machine tool; the final product is obtained.

[0084] The parameters mentioned in the above embodiments are only given as a specific embodiment and are not limited thereto. In other embodiments, those skilled in the art can adjust according to the parameters of the processed products or...

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Abstract

The invention discloses an equal-diameter spiral trace-driven sheet metal discontinuous contact incremental forming method and a product. In the forming method, because the forming trace of a formingtool is spiral, acting force being upward along the spiral trace tangent line is exerted on sheet metal, plastic flow of sheet metal in an unprocessed area to a processed part is increased, and thus partial thinning of sheet metal in a processed area is reduced, the forming performance of the sheet metal can be exerted to a greater extent, and the product with a steeper sidewall is formed.

Description

technical field [0001] The invention relates to a non-continuous contact progressive forming method and product of a plate driven by an equal-diameter spiral track. Background technique [0002] Sheet metal incremental forming technology is a rapid manufacturing technology that integrates computer technology, numerical control technology and plastic forming technology. According to the three-dimensional data model of the product, the processing trajectory is generated, so as to control the processing tool with simple shape, so that it can perform continuous local plastic processing on the metal sheet, and finally accumulate and form the geometric shape of the product. Since the forming process does not require a special mold, it can form products of any shape, eliminating the need for mold design and manufacturing, and is suitable for single-piece or small-batch production of thin shell products, which is a favorable supplement to traditional stamping. [0003] Commonly ref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D31/00
CPCB21D31/005
Inventor 王进李丽华孙树峰姜虎森王旭金烨堂顾宁王新太
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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