Research On Large Engine Camshaft Automatic Assembly Process And Application Analysis

With the quick development of manufacturing industry today, and rising environmental requirements for the engine industry is how to improve the engine power, how to reduce emissions and to achieve the goal of energy conservation, to meet the environmental requirements is essential and the requirement is stringent day by day. Engine building process is the critical process to ensure engine quality, so the engine parts, especial the moving parts of the assembly process are to achieve performance engine development a top priority.How to ensure the performance and quality of the engine is the key to ensure the new project successfully, due to the focus of the assembly precision directly affect engine performance, the process engineer should focus on how to ensure the accuracy of the assembly, the assembly process and choose the right way.In this thesis, we pick up one important assembly station-camshaft assembly, specifically addressed the research process engine camshaft assembly and the new application effective analysis, and also comparison of the assembly process U. S. facility. Use PFEMA in practical work to explain the discussion, and including the ergonomics. By studying the camshaft assembly process, select the most reasonable assembly process, make sure that the engine assembly precision, accuracy while avoiding dependence on operator proficiency, and to ensure the operator got suitable protection, improve station cycle times, reduce labor costs, the cost savings the companyThe following three topics will be analyzed:1Analyze assembly process for large engine camshaftBy searching information in domestic and foreign to analyze various types of engine (large, medium, small) in the form of block, head, camshaft, and to find out the advantage and disadvantage for very type of engine assembly style, this will include assembly method (Automatic or Manual), assembly accuracy, cycle time and assembly conveniences.2Automatic assembly machine technology design.Determine the appropriate assembly process for3500series engine camshaft, and use DFMEA tool to analyze the technical problems encountered in the design process and how to ensure the accuracy of the assembly, the assembly process to avoid damaging the camshaft, camshaft bearings and cylinder.3the application analyzes for new assembly processAfter finishing equipment installation and commission, according to the actual assembly layout and equipment situation on assembly side, Using PFMEA to analyze various potential risks about new assembly machining and process, combined with the manual process in U. S facility, including PQVC (People, Quality, Velocity, Cost) to analysis the advantages and disadvantages of the new process, thus design goals will be come true.