Mechanism modeling method and device

Abstract

The invention discloses a mechanism modeling method and a mechanism modeling device. The method comprises the following steps of: finishing assembly simulation of a product model under a virtual assembly environment to form a product part linked list; acquiring constraint information during an assembly process and establishing a moving pair object to form a moving pair linked list; identifying a mechanical object and acquiring part information of the mechanism from the product part linked list to form a mechanical member linked list, and acquiring moving pair information of the mechanism from the moving pair linked list to form a mechanism moving pair linked list; loading corresponding data information in the mechanism object and establishing a mechanical information model under the virtual assembly environment; and calling a mathematical expression model of a corresponding moving pair by the mechanism object according to the moving pair information in the moving pair linked list to establish a mechanism generalized mathematical expression model. A modeling process of the mechanism is realized by a mixed expression method of information model and mathematical model under the virtual assembly environment, so that the method and the device can serve assembly product analysis and mechanism performance analysis better.

Description

technical field [0001] The present invention mainly relates to mechanism modeling in a virtual assembly environment, and more specifically relates to a mechanism modeling method and device based on a virtual assembly platform serving assembly product analysis and mechanism performance analysis. Background technique [0002] Virtual assembly technology is one of the important applications of advanced manufacturing technology in actual engineering. It can detect problems in the assembly process in advance and correct them in time by performing virtual pre-assembly of products in a virtual environment before the actual assembly of products. It not only improves the first-time assembly success rate in actual assembly, but also reduces the product development cycle. [0003] However, most of the current research on virtual assembly technology still stays at the level of geometric simulation, that is, to simulate and optimize the assembly sequence and assembly path of products by ...

AI Technical Summary

Problems solved by technology

Although there are corresponding mathematical means to describe the mechanism in the field of mechanics and mechanism, the relevant methods are limited to parameter solving, and the related programs written are only used to output the calculated results for the corresponding input parameters, and there is no combination with 3D visualization means. , lacks the data information of the model in the 3D environment, so it cannot visually and intuitively reflect the kinematic simulation of the mechanism

[0005] In short, some current mechanism modeling methods and mechanism simulation methods cannot perfectly serve virtual assembly technology, and related theories cannot realize the establishment of general mechanism models in virtual assembly environments.

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