Positive sequence and negative sequence combination-based three-dimensional process model generation method

Abstract

The invention discloses a positive sequence and negative sequence combination-based three-dimensional process model generation method in the field of three-dimensional digitalization process design. The positive sequence and negative sequence combination-based three-dimensional process model generation method comprises the following steps: firstly reading a design model and establishing a blank model; building part process information and a process framework flow, then, establishing process models of part process framework nodes, performing negative sequence establishment on all process models for operating parts to be changed in all stages, and finally, completing the establishment on all the process models. According to the positive sequence and negative sequence combination-based three-dimensional process model generation method disclosed by the invention, concurrent working of process design and support for collaborative design are realized, and the flow and the efficiency of the three-dimensional process design can be improved; in a three-dimensional process model generation process, by adopting a method that the positive sequence man-machine interaction design of the framework node process models and the automatic negative sequence generation of small-process node process models are combined, all kinds of modeling software are supported, and the generation efficiency of the process models is improved.

Description

technical field [0001] The invention belongs to the field of three-dimensional digital process design, and is a method for generating a three-dimensional process model based on the combination of positive and negative sequences. That is, in the three-dimensional process design, the process model is divided into a frame node process model and a sub-process model. The forward sequence method is used to construct the frame node process model by deleting or suppressing features or model operations; the reverse sequence method is used to construct the sub-process model by using the frame node process model as input and the automatic generation of synchronous modeling. Background technique [0002] With the rapid popularization and development of 3D software, my country's manufacturing industry has basically realized 3D product design. However, most of the process design, which is an important part of the digital design and manufacturing platform, is still based on two-dimensiona...

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Problems solved by technology

[0005] Aiming at the technical problems existing in the existing 3D process model generation methods, such as low generation efficiency of 3D process models, many manual interactions, and lack of support for collaborative and synchronous work, a 3D process model generation method based on the combination of positive sequence and reverse sequence was invented to solve the problem. The problem of collaborative parallel design of 3D process model in the process of process design

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