机械设计基础(第2版)

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