目 录
摘 要...............................................................................................................................III
第一章 前 言 ................................................................................................................4
1.1 镗床概述...............................................................................................................4
1.2 液压传动概述......................................................................................................6
1.2.1 液压传动原理及系统组成.......................................................................6
1.2.2 液压传动优缺点.......................................................................................7
1.3 本课题意义...........................................................................................................8
1.4 液压系统设计主要参数及要求..........................................................................8
第二章 液压系统工况分析 ..........................................................................................10
2.1 负载计算及分析.................................................................................................10
2.2 液压系统参数计算及工况分析........................................................................12
2.2.1 初选液压缸工作压力..............................................................................12
2.2.2 计算液压缸主要尺寸.............................................................................13
第三章 液压系统回路选择.............................................................................................17
3.1 选择油源形式....................................................................................................17
3.2 动作实现及基本回路选择................................................................................17
3.2.1 调速回路.................................................................................................17
3.2.2 速度切换和换向回路..............................................................................17
3.2.3 选择速度换接回路.................................................................................18
3.2.4 进油调压回路..........................................................................................18
3.3..............................................................................................................................19
第四章 液压元件选型与计算.........................................................................................22
4.1 确定液压泵的规格.............................................................................................22
4.1.1 计算液压泵的最大工作压力.................................................................22
4.1.2 计算液压泵的流量.................................................................................22
4.2 确定电动机功率.................................................................................................23
4.3 确定其它元件及辅件.........................................................................................23
4.3.1 确定阀类元件及辅件..............................................................................23
4.3.2 确定油管.................................................................................................25
