CAD (computer aided design)-based complicated mechanical design method

Abstract

The invention discloses a CAD (computer aided design)-based complicated mechanical design method, belongs to the technical field of CAD, in particular relates to the improvement of the CAD-based complicated mechanical design method, and aims to provide a CAD-based top-down complicated mechanical design method. According to the technical scheme, the method comprises the following steps: (1) entirely splitting N functions of complicated machinery into N functional parts; (2) searching for a possible embodiment of each functional part; (3) permuting and combining the possible embodiments of all the functional parts to obtain a plurality of groups of possible implementation schemes; (4) performing comprehensive analysis, and keeping two to five schemes; (5) after the analysis, selecting an optimum scheme from the two to five schemes kept in the step (4); (6) establishing an upper-layer framework model through CAD software according to the optimum scheme selected in the step (5); (7) on the basis of the upper-layer framework model, splitting into components, and then dividing each component into single pieces in detail; (8) completing the design of each single piece, namely completing the overall design.

Description

technical field [0001] The invention belongs to the technical field of computer-aided design, in particular, the invention relates to an improvement of a complex mechanical design method based on CAD. Background technique [0002] The most important link in the product life cycle is the design link, and the finished products of most products are determined by the design stage. [0003] There are two main characteristics in the complex mechanical design process. [0004] 1. Complex system design, especially innovative design, usually adopts a top-down design method, and its design process is a process of continuous evolution from abstraction to concreteness; this process is usually divided into three parts: requirement analysis, conceptual design, and detailed design. stage. [0005] 2. Complex system design is usually completed by multiple designers or design teams, who are respectively responsible for the design of different parts or different sub-assemblies. [0006] Th...

AI Technical Summary

Problems solved by technology

[0008] However, the existing CAD (Computer-Aided Design) can only adopt a bottom-up design method, that is: input the set constraint relationship between parts, and assemble the designed parts into products; if some parts are found in the assembly process If it does not meet the design requirements, it is necessary to modify the parts; after the modification, it will be assembled, and if there is a problem, it will be modified again, and so on; it will greatly waste manpower and physics, and the design cycle will be greatly extended