本书将机械原理与机械设计的内容结合在一起，并将课程理论和实践内容有机地融合，突出知识的应用性，强化系统设计观念，强调设计技能的培养。本书所选内容和设计实例适合普通高等院校应用型人才培养的需要。 本书系统地阐述了机械中的各种常用机构、零部件的结构设计与工作原理及设计方法。全书共14章，内容包括绪论、平面机构的结构分析、平面连杆机构、凸轮机构与间歇运动机构、齿轮机构和齿轮传动、轮系、机械运转速度波动的调节与平衡、零件的连接、挠性传动、轴和联轴器、轴承、其他零部件、机械传动系统设计与实践、机械设计中的计算机辅助设计及实践。 本书可作为高等院校"机械设计基础”课程的教材，对研究生、高职院校学生及相关的工程技术人员也有很好的参考价值。

目 录 第1 章 绪论 ·················································································································.1 1.1 机械设计的有关概念 ······························································································.1 1.2 本课程研究的内容、性质和任务 ···············································································.4 1.2.1 本课程研究的内容 ························································································.4 1.2.2 本课程的性质 ············································��·················································.4 1.2.3 本课程的任务 ······························································································.4 1.3 机械设计的基本要求和机械零件的设计准则 ································································.4 1.3.1 机械设计的基本要求 ·····················································································.4 1.3.2 机械零件的设计准则 ·····················································································.5 1.3.3 机械零件的结构工艺性 ··················································································.8 1.4 机械设计的一般程序 ······························································································.8 1.5 机械零件常用材料及热处理 ·····················································································.9 1.5.1 金属材料 ····································································································.9 1.5.2 非金属材料 ································································································.11 1.5.3 钢件的热处理 ·····························································································.11 1.6 金属材料加工方法及其精度和表面粗糙度 ··································································.13 1.6.1 常用机床及其使用 ·······················································································.13 1.6.2 机械加工方法能够达到的尺寸精度和表面粗糙度 ················································.13 1.7 机械零件设计的标准化 ··························································································.14 1.8 机械设备中的润滑油及润滑简介 ··············································································.15 1.8.1 润滑油的命名方法 ·······················································································.15 1.8.2 润滑油的主要规格指标 ·················································································.16 1.8.3 润滑脂的构成及指标 ····················································································.16 1.8.4 添加剂 ······································································································.17 1.8.5 齿轮传动中的润滑 ·······················································································.18 思考题 ·····················································································································.18 第2 章 平面机构的结构分析 ························································································.19 2.1 平面机构的组成 ···································································································.20 2.2 平面机构运动简图 ································································································.21 2.2.1 构件的分类 ································································································.21 2.2.2 运动副及构件的表示方法 ··············································································.22 2.2.3 平面机构运动简图的绘制 ··············································································.23 VI 机械设计基础（第2版） 2.3 平面机构的自由度 ································································································.25 2.3.1 平面机构自由度的计算公式 ···········································································.25 2.3.2 机构具有确定运动的条件 ··············································································.25 2.3.3 计算平面机构自由度时的注意事项 ··································································.26 2.4 构件和运动副的结构 ·····························································································.29 2.4.1 构件的结构 ································································································.29 2.4.2 转动副的结构 ·········································2