The Study And Development Of The CAPP System Of The Engine Air-cylinder Jackets

The CAPP is the shortened form of computer aided process planning.the process planning is the first stage of preparation for manufacturing technical document. And it is the bridge between design and product manufacturing. The system of CAPP can not only make decision scientifically,According to the experience knowledge of technologist and the process data,but also help people design a proper process planning, furthermore,and also calculating the process dimension,protracting the fig of working procedure choosing the cutting parameter and the optimizing the result of designing of techniques automatically, as a result a better and high quality technical rules can be designed . it make it possible to integrate the CAD ,CAM MIS etc .The air cylinder jacket is an important spare part of the engine, it is usually produced by the flowing water line in batches, the precise of it's production is very high.Generally specified equipments,tongs and cutting tools are adopted in it's production,So in the course of the development of the air cylinder jackets CAPP, specified equipments, tongs and cutting tools must be considered.There are many kinds of the air cylinder,but it can be divided into two classes of the cooled by the water and the wind, and the air cylinder of cooled by water can also be divided into the dry air cylinder and the wettest air cylinder there is a comparability of structure for the air cylinder of the kindred,so a identical technical line can be used for it,the distinctness is the dimension of the equipment ,the tongs and the knifes,this offers the condition for us to develop the CAPP system according to the technology of group.The automobile absorber CAPP system adopt half-creation mode. The air cylinder aims at the practicality, the automation and flexibility and integration based on the practicality.the air cylinder based on the production of factory,adopted the group communication technology, establish he data of equipments,tongs and cutting tools the method of input of form surface,and the method of man-machine conversation .According to the principle of converse technology,every working procedure can be decided,and the figures of technology and the cards of technology can be created automatically,in the end the cards can be arranged by order of process,and a template of a kind of air cylinder Techniques can be created .if a kind of air cylinder is resembled in the structure,the template for it can be found for it automatically by the system.and the parameter of this kind of air cylinder can be...