Adaptation of a CAD System for Technological Process Formation for Part Manufacturing in Small-Series and Single Production

Abstract

The task of automating the system of technological preparation of production, including the stage of technological process design, is currently gaining special relevance. Implementation of re-engineering programs within the framework of solving the problems of ensuring technological independence and safety implies rapid deployment of production capacities and effective development of new production facilities. As a consequence, reliable and correct for application in various forms of production enterprises automation systems are required. The existing systems of automated design of technological processes remain poorly adapted for single and small batch productions, so they are practically not applicable for multi-nomenclature productions of small or medium-sized enterprises. Functioning of modern domestic systems of computer-aided design of technological process is based on algorithms adapted and applied in conditions of large series, when production has greater stability of production of products. Consequently, it is necessary to adapt the algorithms of technological process design to work at a small-scale enterprise. The general scheme of technological process design for serial systems of automated technological process design is considered, the possibilities of its unification and subsequent adaptation for single and small batch productions are shown and evaluated. On the basis of the analysis of the obtained unified functional scheme the adaptation of the algorithm of formation of the technological process of part manufacturing is carried out. Taking into account the existing limitations and requirements to the peculiarities of functioning of the systems of computer-aided design of technological process in single and small batch production, a new functionality of the subsystem of initial information preparation is formed and proposed. The proposed algorithm of forming the technological process of part manufacturing includes three fundamental blocks: preparation of initial information, construction of the technological model of the part and its analysis, formation and issuance of technological documentation. Thus, the proposed adapted algorithm of technological process formation in the conditions of single and small batch production of products has a simpler form, understandable structure.