| The conveying manipulator is an indispensable transmission system of JM31-160automatic stamping production line, the reliability and stability of which directly affects the productivity of auto stamping production line.This paper has taken the conveying manipulator as research object, using virtual prototyping technology, basing on the Multi-body dynamics theory, explores the technical line of dynamic design theory using on the transmission system.The key points of this article read as follows:(1)Finite element analysis and virtual prototype technology research and development status at home and abroad, as well as the rigid-flexible coupling technology research and development, illustrate the significance of the research content and research purpose.(2)Describe the composition of JM31-160automatic stamping production line and the function and design feature of conveying manipulator as well as compute and allocate machine-hour of the periodic operation for conveying manipulator.(3)Build model and finite element analysis. According to characteristics of conveying manipulator, the use of three-dimensional design software Solidworks to model, and achieving a complete virtual assembly. Importing solid model into the finite element analysis software ANSYS to build finite element model through the CAD/CAE software interface. Executing static and modal analysis to ensure static and dynamic rigidity, then reaching a conclusion X axis transmission system is the frailest structure on dynamic function of the whole conveying manipulator via analyzing mode shapes.(4)Through Solidworks software establishing the simplified three-dimensional solid model of X axis transmission system, and import into ADAMS software, build constraints and drivers in ADAMS, preparations having done before simulation. The modality neutrality file used by simulation model of the flexible system is created. And then replace the corresponding rigid body with the components deformation flexible body to realize the coupling model. To rigid model and rigid-flexible coupling model of X axis transmission system makes simulation analysis respectively, then coming to a conclusion rigid-flexible coupling model is more satisfied with the need of engineering.(5)Based on rigid-flexible coupling model of X axis transmission system, analyze vibration features of the transmission system, conducting forced vibration analysis in the light of different types of vibration to realize the research of vibration response, which provides foundations for optimization of X axis transmission system.(6)Put forward optimized scheme according to the vibration response analysis. In the optimized model to do the same excitation input vibration analysis, comparing the vibration response of original and optimized model. Reaching a conclusion the function of optimized model is not only improved, but also manufacturing cost brings down. Finally, making physical prototypes of conveying manipulators with different kinds transmission structures test respectively, roundly mastered product performance, effectively shorten the design cycle. |
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