数控车床主轴组件毕业设计（论文）.doc

毕 业 论 文（设计） 机电工程系 级 机电一体化 专业 题 目： 数控车床主轴组件设计 学生姓名： 指导教师： 班 级： 2008 年 06月 10日 目 录 绪 论························································4 一、设计题目及参数············································5 1.1 题目·················································5 1.2 参数·················································5 二、主轴的要求及结构·········································5 2.1主轴的要求 ···········································5 2.1.1旋转精度 ··········································5 2.1.2静刚度··············································6 2.抗振性·················································6 2.1.4温升和热变形········································6 2.耐磨性·················································7 2.1.6材料和热处理········································7 2.2主轴的结构············································7 三、主传动系统变速方式········································8 四、机床夹具的确定··········································10 五、主轴主要参数的计算及校核·································11 5.1主轴主要参数的计算···································11 5.1.1主轴前端直径D1····································12 5.1.2主轴内径d·········································12 5.1.3主轴前端悬伸量确定······························· 13 5.1.4主轴跨距的确定 ····································14 5.2 轴的刚度计算········································15 六、主轴轴承的选择···········································16 6.1 轴承的选型··········································16 6.1.1角接触球轴承····································· 17 6.1.2圆柱滚子轴承·······································19 6.1.3圆锥滚子轴承·······································16 6.1.4深沟球轴承·········································19 6.2轴承间隙调整和预紧···································19 七、主轴箱箱体的设计·········································20 7.1主轴箱的概述·········································20 7.2主传动的设计········································20 7.2.1驱动源的选择······································20 7.2.2传动轴的估算······································21 7.2.3齿轮模