Research On Mechanical Process Decision-making Support Technology And System Of Impeller

Process planning is a key technical activity that technological design person provideproducts or parts manufacturing process and methods of operation based on relevantprinciples and methods of mechanical manufacture technology. Scientific and rationalproduct process planning is an important manifestation of enterprise core competence,and it is also an effective means to improve production efficiency and to reducemanufacturing cost and production energy consumption. The rotating impeller is thecore component of turbines, and the processing quality has a decisive impact on theperformance of turbo machine, but its structure is complex, especially the complexblade surface processing has been a bottleneck which restricts the overall performanceof product, and it is also an important symbol of weighing the impeller machiningtechnology level. Therefore, the research on the optimization and improvement ofrotating impeller process has been a research hotspot in the field of mechanicalmanufacturing.Due to the importance of process planning in the field of mechanical manufacturingand the important function of the rotating impeller and its structural characteristics, theresearch purpose of this paper is to promote the mechanical process decision-makinglevel of the rotating impeller. The paper proposes a set of rotating impeller mechanicalprocess decision-making techniques based on an impeller of a turbocharger plant inChongqing, and designs a prototype system based on the technology so as to providetechnical support for the improvement and upgrading of the rotating impellerprocessing.Firstly, study the process route optimization of rotating impeller. A rotating impellerprocess route optimization method is proposed based on fuzzy comprehensiveevaluation and genetic algorithm according to the structural characteristics of therotating impeller and the effective combination of practical experience of craft workersand scientific algorithm. The feasible and optimization process line is finally obtainedthrough the technological characteristics of processing scheme decision-making basedon the fuzzy comprehensive evaluation and the process/step sequencing based ongenetic algorithm.Secondly, study the cutting parameter optimization of rotating impeller. Through theanalysis of rotating impeller machining features, establish a kind of cutting parameter model oriented multi-process manufacturing system, and design a complex algorithm tosolve the optimization model according to characteristics of the optimization problem,finally obtain scientific and rational cutting parameters.Thirdly, study some of key technologies in the mechanical process decision-making.Considering the process quality prediction and effectively tracing back when qualityproblems arise in the production process, study process correlation relationships; In thestage of process design, considering effectively avoiding frequent bottleneck process inthe production, study prediction methods and treatment strategies of the bottleneckprocess; Put forward a method of working hours formulation, to assist enterprises torealize the scientific and standard management of working hours.Finally, based on the above method, design a set of rotating impeller mechanicalprocess decision-making support prototype system, including the system technicalscheme, system structure, functional model as well as the design of databaseinformation model, etc. And the research achievement of this paper is applied to theimpeller process design in a turbocharger factory in Chongqing and good applicationeffect is achieved.