| The axis test specimen is mainly used to research the material characteristic of a structural part in the aero-engine.The traditional production line of the factory for the test specimen is low degree of automation,intelligence,and informatization.It’s also low efficiency,quality and reliability It’s also great labor intensity.In view of this,this paper is based on the automation-upgrading project of a production line for an aero engine test specimen.Based on the on-site process and needs,the production line has been designed and researched.The main content is summarized as below:(1)Integrated planning of the production line.The shortcoming of the existing production line has been analyzed and various function modules have been applied according to the function requirements,such as intelligent detection modules,MES,robot to load-unloading workpiece,etc.The overall process has been designed and optimized,which can be applied to the production of four kinds of axis parts.On this basis,some critical mechanical structures have been designed and the main equipment has been selected.The overall layout of the production line has been designed and optimized according to the overall process,the overall structure of the new production line and the total transportation path of the robot.Finally,the beat of the production line has been designed.(2)The simulation analysis of the production line by DELMIA.The kinematic models of the production line have been constructed in DELMIA and the kinematics analysis of the robot has been conducted.The teaching of the robot and trajectory planning have been finished by DELMIA and the robot’s trajectory curves have been generated in DELMIA.The interference and reachability tests have been conducted on the robot.The unreasonable design and layout of the production line have been discovered in advance.Finally,the overall simulation of the production line has been conducted and the beat of the robot has been optimized which can increase the efficiency of the production line to some extent and provide a certain theoretical foundation for the research of the production line.(3)The hardware and software design of the control system for the production line.The structure and function of the hardware has been designed.The Multi-level and modularized controlling means has been designed by PLC and communication protocols such as PROFINET.The network topology,resource allocations and the electrical wiring have been designed.The overall framework of the software,the control flowcharting,the framework of the program and the HMI of the control system have been designed.Finally,the production scheduling and condition monitoring of the production line have been achieved by communicating the control layer with MES through the TCP/IP protocol.Through the on-site debugging and operation,the feasibility of the overall structure and the control scheme of the production line can be proved.It has characteristics of automation,intelligence,informatization and flexibility which can improve the production efficiency and product quality.It has the certain significance and high utility value in engineering and theoretical research. |
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