Design Of Riveting Machine For Cover Plate Of Capacitor Based On IDEF0 Model Of Manufacturing Knowledge

This research relies on the college-enterprise cooperation project to develop the riveting machine of aluminum electrolytic capacitor cover,aiming to provide small and medium-sized capacitor production enterprises with automation equipment suitable for small and medium-sized batch production,and meet the increasingly diversified demand for capacitor products in the electronic product market.Firstly,the structure and process requirements of the cover plate of aluminum electrolytic capacitor are analyzed in detail,and the design principles and technical requirements of the cover plate riveting machine are summarized.Combined with the analysis of the general processing technology of the existing cover plate,the overall process flow of the pin-type capacitor cover plate riveting is obtained.The riveting machine is divided into rotary components,feeding components,riveting components and discharging components,and the overall layout form of the riveting machine is determined.Secondly,according to the needs of enterprises for short-cycle and rapid development of products,in order to improve the efficiency of school-enterprise cooperative development and reduce the disconnection between design and manufacturing caused by insufficient understanding of the manufacturing capacity of enterprises,product development and design are carried out based on the IDEF0 model of manufacturing knowledge.Through the IDEF0 model of manufacturing knowledge,the design process is planned and controlled,and the manufacturing knowledge such as the machining level,commonly used materials and surface treatment capabilities,and purchased parts suppliers of the cooperative enterprise are fully understood and summarized,which provides strong support for the design to rely on the manufacturing capacity of the enterprise.Then,combined with the manufacturing knowledge of the enterprise,the detailed scheme design of each functional component is carried out,and the principle scheme and structural design of the riveting machine rotary component,the pin rivet feeding component,the cover plate feeding component and the riveting component are completed.The selection of parts structure,materials and purchased parts fully considers the manufacturing capacity of the enterprise.In the design,the LS-DYNA display dynamics analysis of the riveting process is carried out to obtain the deformation of the riveting rivet,verify the rationality of the mold material selection and structural design,obtain the riveting force and determine the operating power required for riveting.Finally,the three-dimensional design model of the riveting machine is summarized,the procurement priority of the purchased parts and the processed parts is determined,and the detailed drawings of the parts are completed in sequence,and the procurement and processing are delivered to the enterprise to complete the prototype assembly and debugging.The whole design and development is completed 20 days ahead of schedule,which is 13 % shorter than the original plan cycle.There are few modifications caused by design disconnection in the manufacturing process.The prototype trial production proves that the riveting machine meets the production efficiency and quality requirements.This project has completed the college-enterprise cooperation development of the capacitor cover riveting machine.Through the application of the IDEF0 model of manufacturing knowledge,the design and enterprise manufacturing capabilities are fully matched,which can effectively shorten thedevelopment cycle ofcollege-enterprise cooperation and reduce costs of the development.