组合钻床液压系统设计.doc

膇芃螃袅聿薁螂羈芅蒇螁肀 目 录 前言 1 1.液压传动的发展概况和应用 1 1.1液压传动的发展概况 1 1.2液压传动的特点及在机械行业中的应用 2 1.2.1 液压传动的优点 2 1.2.2 液压系统的缺点 3 1.2.3 液压系统在机械行业中的应用 3 2.液压传动的工作原理和组成 3 2.1工作原理 3 2.2液压系统的组成 4 2.3液压控制阀的介绍 4 2.3.1 压力控制阀 4 2.3.2 流量控制阀 5 2.3.3 方向控制阀 5 3.负载与运动分析 5 4.负载图和速度图的绘制 7 5.确定液压系统主要参数 8 5.1确定液压缸工作压力 8 5.2计算液压缸主要结构参数 8 5.3绘制液压缸工况图 10 6.液压系统方案设计 11 6.1选用执行元件 11 6.2速度控制回路的选择 11 6.3选择快速运动和换向回路 12 6.4速度换接回路的选择 12 6.5组成液压系统原理图 13 6.6系统图的原理 14 7.液压元件的选择 16 7.1确定液压泵的规格和电动机功率 16 7.2确定其它元件及辅件 18 结 论 18 参考文献 19 摘 要 组合机床是以系列化、标准化设计的通用部件为基础，配以以工件形状和加工工艺要求而设计的少量专用部件，对一种或若干种零件按预先确定的工序进行加工的高效率和自动化程度较高的机床。它能完成钻、镗、铣、刮端面、倒角、攻螺纹、等加工和工件的转位、定位、夹紧、输送等动作。通用部件按功能可分为动力部件、支承部件、输送部件、控制部件和辅助部件五类。动力部件是为组合机床提供主运动和进给运动的部件。主要有动力箱、切削头和动力滑台。Abstract Combination machine tool to serialization, standardization design of common parts for the foundation, with a shape of the workpiece and processing requirements and design a small special components, in one or several parts according to the predetermined procedures for the processing of high efficiency and high degree of automation of machine tool.It can complete the drilling, boring, milling, scraping face, chamfer, tapping, and other processing and the workpiece positioning, clamping, transposition, transportation and other movements.General components can be classified according to the functions of power part, the supporting part, conveyor components, control components and auxiliary components of five kinds.Power unit for modular machine tool with main movement and feed movement of the parts.The main driving force for box, cutting head and a power sliding feed table. Combination drilling machine hydraulic system is used to control the hydraulic power sliding table.Combination machine tool hydraulic system power, can realize the working cycle is: fast forward to feed, quickly return to in situ stop, hydraulic technology is the mechanical equipment of the fast development of technology of the.Especially in recent years and microelectronics, computer technology comb