双面镗孔组合机床液压系 油路块与泵站总成设计.doc

双面镗孔组合机床液压系统 油路块与泵站总成设计 学院：机电工程学院 班级：070102班 姓名：冯丽 指导老师：田彦 摘要 本次毕业设计的题目是双面镗孔组合机床液压系统、油路块与泵站总成设计，设计过程包括：设计方案分析，负载与速度分析，确定液压系统主要参数，拟定液压系统原理图，计算和选择液压元件。 本设计首先介绍了液压系统的组成及工作原理，分析了液压技术的发展趋势及其优缺点，然后根据本设计的特点及要求，提出了设计方案，对设计要求及工况进行了分析，确定了液压系统的主要参数，选取了液压缸的工作压力，最后计算了液压缸的尺寸。 在设计方案拟定的基础上，确定了液压系统原理图，其中包括几种基本回路，如：调速回路，夹紧回路和调压回路等。计算和选择了液压元件，如：流量阀和溢流阀的选择，油管的选择，确定液压泵的规格和电动机功率，确定了油箱容积。 最后进行了液压系统性能的验算，其中包括几种工况情况下压力损失的验算及泵压力的调整，整体液压系统的发热与温升验算。 关键词: 液压传动 液压泵 液压缸 Abstract The subject of the graduation project is double-sided boring machine tool hydraulic system and oil blocks and pump station assembly design, including: design scheme analysis, load and velocity analysis, confirming the main parameters of the hydraulic system, draw up hydraulic system diagram, calculation and selection of hydraulic components. Firstly, this design introduced the hydraulic system structure and working principle, analyzes the development trend of the technology of hydraulic and their advantages and disadvantages, then according to the characteristics and requirements of the project, this paper puts forward the design plan. In the scheme, the requirements and working conditions were analyzed to determine the main parameters of the hydraulic system, select the working pressure of the hydraulic cylinder, and finally calculate the size of the hydraulic cylinder. Programming in the design, based on the diagram to determine the hydraulic system, including several basic circuit, such as: speed loop, clamping circuit and the voltage regulator circuit and so on. Calculation and selection of hydraulic components, such as: the choice of flow valve and pressure relief valve, tubing choice, to determine the specifications of hydraulic pump and motor power to determine the tank volume. Finally, the performances of the hydraulic system are checked, which includes several conditions to testing the pressure loss and adjusting the pump pressure , and checking the heating and temperature rise of the over