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Constraint regeneration system and method based on three-dimensional model

A 3D model and model technology, applied in the field of constraint regeneration system based on 3D model, can solve problems such as waste of time, failure, and repeated problems, and achieve the effects of reducing repetition, improving work efficiency, and avoiding chain errors

Pending Publication Date: 2020-12-18
HEFEI UNIV OF TECH
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Problems solved by technology

[0004] II. When there are many and complex types of assembly components and features, the designer needs a lot of repeated operations, wasting time;
[0005] III. In the entire assembly, even if the feature reference is modified and added manually, in the later design operation, the problem of feature generation failure caused by the operation may occur again, causing the problem to recur

Method used

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  • Constraint regeneration system and method based on three-dimensional model
  • Constraint regeneration system and method based on three-dimensional model
  • Constraint regeneration system and method based on three-dimensional model

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Embodiment Construction

[0059] In this embodiment, this method is used to quickly regenerate the model that fails to regenerate, such as figure 1 As shown, first select the module to be used according to the 3D model provided by the user; then determine the cause of the model regeneration failure; select the regeneration method, including extrusion features, chamfer features, assembly sketch features, assembly constraints relationship; finally quickly regenerate the model. This method uses the human-computer interaction menu tool and application program interface API created by MFC to realize the communication between the regeneration feature unit and the Creo platform, and complete the instantiation expression of the regeneration information of the 3D model, and the communication process of the regeneration feature class is as follows: figure 1 shown.

[0060] In this embodiment, a constraint regeneration system based on a 3D model such as figure 2 As shown, including: assembly assembly constrain...

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Abstract

The invention discloses a constraint regeneration system and method based on a three-dimensional model. The system comprises an assembly body assembly constraint regeneration module and a feature geometric constraint regeneration module. The assembly body assembly constraint regeneration module comprises an assembly constraint regeneration unit; the feature geometric constraint regeneration modulecomprises a stretching sketch section reference unit, a chamfering edge unit and an assembly sketch unit. According to the method, the constraint-based three-dimensional model can be quickly regenerated, the error model regeneration time is shortened, and the design efficiency and quality are improved.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional model modeling, and relates to a constraint regeneration system and method based on a three-dimensional model. Background technique [0002] At present, more and more companies use CAD software to create 3D models of products. In the design and production, the failure of parametric CAD software model regeneration is mostly caused by the lack or error of feature references. Usually, references are divided into two categories, assembly constraint references And geometric reference, the external reference introduced by the former is assembly constraint information or dimensional positioning information. The loss of geometric reference refers to the parent feature of the failed feature as part of itself. In the traditional CAD design system, for lack of feature reference or The error caused the 3D model to fail to regenerate, and it is necessary to manually click "Edit Definition" one by one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20G06F111/04
CPCG06F30/17G06F30/20G06F2111/04
Inventor 董玉德王妍付志峰王刚刘江锋崔羽翔周弓
Owner HEFEI UNIV OF TECH
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