Design of lubricating oil nozzle for internal combustion engine and research on its production technology

The structure of the inner cooling nozzle has been introduced in the text.According to basic theory of small diameter tube necking and bending as well as the practical experience in production,the design of necking die and bending die demanded in machining process of nozzle has been described.The composition characteristics of necking tool and bending tool have been mainly introduced.The functions of adjustable angle,squeeze pressure, deformation volume,and compression travel process parameters of forming tool have been clarified as well as the selection of specific process parameters.