工程机械变速箱再制造的研究与应用

发布时间：2018-05-24 13:38

本文选题：再制造流程 + 激光熔覆　；参考：《广西科技大学》2015年硕士论文

【摘要】：本文从再制造的现实意义出发,论述再制造在工程机械变速箱中的应用,依据再制造的理论研究对变速箱关键零部件进行再制造,对再制造的齿类件采取有限元接触强度分析,最后对整个再制造后的变速箱进行各项试验项目的验证。从失效形式的不同采取换件法、修理尺寸法、改变零件特性三种方法实施再制造件的加工,从而为再制造在整个工程机械行业提高现实的依据。首先,从整个工程机械行业的巨大的退役量为出发点,为再制造提供可靠的依据。进而以制造流程和再制造流程的加工特点出发,详细阐述再制造在经济和环境方面突出节省材料、节约能源、对环境友好等特点的价值作用。再制造流程:对废旧件的拆解、拆解之后的清洗、其次对清洗的零件检测、选择合适的再加工方法、对再制造后的零件再装配、最后调试在变速箱整个再制造过程的应用。其次,对变速箱中的齿类件和轴类件等关键零部件进行失效形式的分析,而在分析外齿轮失效的原因以及建立失效模型,利用该模型和相应的检测技术定量分析可再制造件,在废旧变速箱的拆解和清洗方面,该论文从不同方面总结出相应的方法以及该方法所应注意的事项。而在再制造加工方面主要结合变速箱关键零部件的失效形式采取换件法、修理尺寸法、改变零件特性三种主要方法实施,最后对再制造件进行再加工的工艺参数优化,通过有限元模拟正交试验分析不同工艺参数的影响结果为以后的再制造工艺的优化提供可行的数据参考和依据。最后,对再制造后的变速箱进行试验分析,试验项目主要为各档空载损失试验、各档传动效率试、制动工况各档最大输出扭矩、换挡过程试验四个项目,试验过程中应注意的相关事项以及较好的数据的处理方法,在分析试验结果时,应将试验结果与新品试验结果对比为以后新产品设计应注意再制造工艺提供可靠的依据。
[Abstract]:Based on the practical significance of remanufacturing, this paper discusses the application of remanufacturing in gearbox of construction machinery. According to the theoretical research of remanufacturing, the key parts of gearbox are remanufactured, and the contact strength of the remanufactured gear parts is analyzed by finite element method. Finally, the whole remanufactured gearbox is verified by various test items. According to the different failure forms, the three methods of changing parts, repairing dimensions and changing the characteristics of parts can be used to process the remanufactured parts, so as to improve the practical basis for remanufacturing in the whole construction machinery industry. First of all, from the entire construction machinery industry's huge retirement as the starting point, to provide a reliable basis for re-manufacturing. Based on the processing characteristics of manufacturing process and remanufacturing process, the value of remanufacturing in economic and environmental aspects such as material saving, energy saving and environmental friendliness is expounded in detail. The process of remanufacturing: the disassembly of used parts, the cleaning after disassembly, the examination of the cleaned parts, the selection of appropriate reprocessing methods, the reassembly of the parts after remanufacture, and the application of debugging in the whole remanufacturing process of the gearbox. Secondly, the failure forms of the key parts such as gear parts and shaft parts in the gearbox are analyzed, and the causes of the failure of the outer gear and the failure model are established. The model and the corresponding detection techniques are used to quantitatively analyze the remanufactured parts. In the aspect of disassembly and cleaning of waste gearbox, this paper summarizes the corresponding methods from different aspects and points out the points that should be paid attention to in this method. In the aspect of remanufacturing, three main methods are adopted, such as changing parts method, repairing dimension method, changing the characteristics of parts, combining the failure form of key parts of gearbox. Finally, the process parameters of remanufacturing parts are optimized. Through the finite element simulation orthogonal test, the influence of different process parameters is analyzed. The results provide a feasible data reference and basis for the optimization of the remanufacturing process in the future. Finally, the test analysis of the remanufactured gearbox is carried out. The test items are mainly four items: the no-load loss test of each gear, the transmission efficiency test of each gear, the maximum output torque of each gear in the braking condition, and the shift process test. In the analysis of the test results, the comparison between the test results and the new product test results should provide a reliable basis for the design of the new products to pay attention to the remanufacturing process.
【学位授予单位】：广西科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU605

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