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Reverse engineering computer-aided design (CAD) modeling method based on three-dimensional sketch

A technology of reverse engineering and modeling methods, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effects of improving stability and reliability, easy implementation, and simple algorithms

Inactive Publication Date: 2012-08-01
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems and deficiencies existing when the existing reverse engineering CAD modeling method is used for model reconstruction of structural solid parts, the purpose of the present invention is to provide a reverse engineering CAD modeling method based on three-dimensional sketches

Method used

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  • Reverse engineering computer-aided design (CAD) modeling method based on three-dimensional sketch
  • Reverse engineering computer-aided design (CAD) modeling method based on three-dimensional sketch
  • Reverse engineering computer-aided design (CAD) modeling method based on three-dimensional sketch

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with drawings and embodiments.

[0033] Such as figure 2 As shown, the physical prototype is first measured to obtain data, and then the reverse engineering CAD model is reconstructed to obtain the digital model of the physical prototype, and then the innovative design is carried out based on the digital model, and finally a new product model is formed. Described acquisition data, then carry out reverse engineering CAD model reconstruction to draw three-dimensional sketch, then carry out the reverse engineering CAD model reconstruction based on three-dimensional sketch, the steps of this method are as follows:

[0034] 1) According to the geometric characteristics of the physical parts, select a group of solid primitives in the way of interactive design, and construct the 3D sketch model of the solid parts through geometric transformation operations and Boolean operations;

[0035] 2) Based on the 3D...

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Abstract

The invention discloses a reverse engineering computer-aided design (CAD) modeling method based on a three-dimensional sketch. The achieving process of the method includes first measuring a real object model to obtain data, drawing the three-dimensional sketch for reverse engineering CAD model reconstruction, then conducting reverse engineering CAD model reconstruction based on the three-dimensional sketch to obtain a digitalized model of the real object model, conducting innovation design with the digitalized model as the base and finally forming a new product model. The method provides simplified and complete measurement elements and measurement route plans for structure real object parts, enables the contact type reversing measurement process of the structure real object parts to have specific measurement route guide, does not need to design complex mass data processing algorithm, avoids links which are difficult to achieve correctly and completely in real time such as characteristic recognition and design parameter reduction, improves stability and reliability for reverse engineering CAD model reconstruction of the structure real object parts, and is convenient and easy to achieve.

Description

technical field [0001] The invention relates to a reverse engineering CAD modeling method, in particular to a reverse engineering CAD modeling method based on a three-dimensional sketch. Background technique [0002] Reverse engineering is a general term for computer-aided technology, digital measurement technology, and geometric model reconstruction technology that convert product prototypes into digital models. It is an important technical means to digest and absorb advanced technologies and realize rapid development of new products. Reverse engineering technology is widely used in many fields such as industrial production, scientific research and social life, and its realization process is as follows: figure 1 shown. [0003] In industrial production, there are such a batch of parts: their geometric models can be expressed by a limited set of solid primitives, a set of geometric transformation operations and a set of Boolean set operations, among which solid primitives i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 卢科青王文吴尧锋高曙明陈子辰
Owner ZHEJIANG UNIV
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