组合机床动力滑台液压系统设计毕业论文介绍.doc

摘 要本文首先对液压系统进行工况分析，通过分析计算，绘制速度、负载循环图，初步选定液压缸工作压力，并计算缸尺寸以及各阶段流经液压缸的流量；其次根据液压系统供油方式、调速方式、速度换接方式拟定液压系统图，并且对系统工作状态分析；再次通过对流各元件的流量的计算，合理选择液压元件；最后通过对系统升温的验算，对液压系统进行性能分析。还必须符合体积小、重量轻、成本低、效率高、结构简单、工作可靠、使用和维修方便等一些公认的普遍设计原则。关键词:工况分析；液压系统；液压 Design of combination machine tool hydraulic pressure system The hydraulic drive technology is one of the fastest-growing technologies in the mechanical equipment. Especially in recent years, hydraulic technology with microelectronics and computer technology combined, make the hydraulic technology has entered into a new stage of development. Hydraulic technology has high transfer efficiency, simple structure, action to achieve easy outstanding advantages. Hydraulic transmission has been widely applied in construction machinery. Firstly this paper analyzes the working conditions of the hydraulic system of power sliding table in modular machine tools. The rendering speed and the graph of load circulation are obtained by the analysis and calculation, as well as the working pressure of hydraulic cylinders. Calculation for hydraulic cylinders is to get suitable cylinder size and the each stage flow of the hydraulic cylinder; Secondly protocolling the circuit diagram for hydraulic system is based on its oil mode, speed mode and the access mode of speed and analysis for the working conditions of hydraulic system. Calculation for the flow of hydraulic cylinders again is to choose the rational components; Finally analyzing for hydraulic system performance is to check the efficient and temperature of this system. In addition the above requirements should be met, the system must meet the principles including the small size, light weight .low cost, high efficiency, simple structure, reliable operation, convenient use, which are recognized as rational design principles. Key words: power sliding; working conditions; hydraulic system; hydraulic cylinder 目 录 摘 要 I Design of combination machine tool hydraulic pressure system II 1 绪 论 1 1.1 液压传动的发展历史及发展前景