Three-dimensional visualized process design system and its design method

Abstract

The invention relates to a three-dimension visualization process design system and a design method thereof, belonging to the computer integrated manufacturing field. In the invention, a three-dimension model is built on the supporting platform of a design system CAD, and other models carry out process design by taking the CAD system as a support and the three-dimension model as a basis; the features of the three-dimension model are identified automatically or semi-automatically by a feature identification module; the determination of a processing chain, the design of a clamping scheme, and the selection of a cutter and a clamp are respectively finished according to the identified features by a processing method selecting and positioning scheme design module; the sequencing of the processing features is finished by process sequencing; the generation of an intermediate state model leads the process design to be imagery and visual; the calibration of tolerance is finished by a process dimension calculation module; and various process cards which meet the requirements are output by a process card management module. The system and the method of the invention have the advantages of visual process design, good intelligence, high efficiency, and good quality, etc.

Description

technical field [0001] The invention relates to a system and a method in the technical field of computer integrated manufacturing, in particular to a three-dimensional visualization process design system and a design method thereof. Background technique [0002] Computer Aided Process Design (CAPP) is a bridge connecting CAD and CAM, and is one of the important foundations of advanced manufacturing technology. For a long time, people have been working hard to improve and improve the practicability, integration and intelligence level of the CAPP system. Especially in recent years, with the acceleration of product upgrading and the increasingly complex shape and structure of products, there are higher and more urgent requirements for the integration of CAD / CAPP / CAM and the ability of CAPP to process complex shape parts. In recent years, the ability of CAD and CAM systems to process complex shapes has been greatly improved. In contrast, the ability of CAPP is even weaker. Many...

AI Technical Summary

Problems solved by technology

This technology has the following deficiencies: [1] There is a CAX integration platform, but the process design is mainly based on process pictures, and there is no interface for converting 3D part models into 2D drawings. Even if the interaction between graphics and language is carried out through intermediate files, etc. convert

In the conversion process, information loss and ambiguity will inevitably be brought about, resulting in difficulties in integration; [2] There are processing feature definitions and typical process formulations, with low automation and low efficiency, which cannot meet the fast and efficient modern process design. Requirements; [3] There are interactive and derivative process design methods, but these two types of design methods are reasoning processes based on language symbol information, while part structure process analysis, processing surface accessibility judgment, tool space trajectory planning, machining Process design activities such as method selection, positioning method and reference surface selection, and spatial dimension chain calculation are inseparable from activities such as geometric shape analysis, spatial structure reasoning, and shape matching based on 3D model information.

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