Envelope die design method for improving spatial envelope forming precision under linear track

A technology of mold design and trajectory, applied in the direction of design optimization/simulation, etc., to achieve the effect of simple method, strong practicability and versatility, and high precision

Active Publication Date: 2020-02-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports at home and abroad on the enveloping die design method to improve the accuracy of the space enveloping forming of thin-walled and high-reinforced components under a straight line trajectory

Method used

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  • Envelope die design method for improving spatial envelope forming precision under linear track
  • Envelope die design method for improving spatial envelope forming precision under linear track
  • Envelope die design method for improving spatial envelope forming precision under linear track

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Embodiment Construction

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0046] This example is aimed at a component with two S-shaped high ribs on a flat plate such as figure 1 As shown, the present invention is used to design the enveloping die for space enveloping forming under its straight line trajectory. The shape design method of the envelope mold includes the following steps:

[0047] S1, such as figure 1 As shown, take the highest plane geometric midpoint O on the upper surface of the component to be formed as the coordinate origin, take the horizontal plane passing through O as the xy plane, any straight line passing through O in this plane as the axis of rotation, and take this axis of rotation as X The axis and the rotation axis are fixed during the envelope forming process, an...

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Abstract

The invention relates to an envelope die design method for improving the spatial envelope forming precision under a linear trajectory. The method comprises the following steps of S1, building an O-xyzrectangular coordinate system through employing the highest plane geometric midpoint O of the upper surface of a component as the origin of coordinates; S2, generating an envelope mold design principle based on a component inversion method, and enabling the component to perform linear reciprocating swing motion around a rotating shaft; S3, dispersing and extracting the coordinates of the points on the upper surface of the component, and putting the coordinates into a set V1; S4, obtaining a point set V1' under different rotation angles from the point set V1 in the step S3 according to the movement in the step S2, wherein the set is the overall point cloud during the reverse movement process of the component, and the point cloud on the upper surface of the set is the envelope mold; and S5,extracting the upper surface points from the V1' point set by utilizing a boundary extraction algorithm, and putting the upper surface points into a point set V2, so that the point set V2 is the surface points of the envelope mold under the linear track. The envelope mold obtained by the method does not interfere with the upper surface of the component, and thus the spatial envelope forming precision of the component is improved.

Description

technical field [0001] The invention relates to the technical field of space envelope forming, and more specifically relates to an envelope mold design method for improving the accuracy of space envelope forming under a straight line trajectory. Background technique [0002] Space enveloping forming refers to the plastic forming method in which the complex spatial motion of the enveloping mold is enveloped into the complex shape of the component during the relative movement of the enveloping mold and the component. Space enveloping forming has the characteristics of small forming force, high material utilization rate, good forming precision, and better metal flow line, which can ensure the performance of components, so as to meet the requirements of high-performance and high-efficiency forming and manufacturing of components. [0003] In the process of space envelope forming, according to the trajectory of any point on the envelope mold, space envelope forming can be divided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
Inventor 韩星会华林杨思伟
Owner WUHAN UNIV OF TECH
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