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毕业设计-卧式数控铣床主传动系统的设计，共28页，14166字，设计图纸、任务书
一、原始依据（资料）
1. 数控铣床主传动系统的设计参考图。
2.典型零件（齿轮、蜗杆涡轮、主轴、轴、滚珠丝杠等）参考图。
3.有关数控机床的组成、特点、功用等内容的资料。
二、设计内容和要求：（说明书、专题、绘图、试验结果等）
1.两张零号图纸的CAD绘图工作量。
2.基本了解图纸中所涉及到的、主要的、基本的、关键的技术问题。
3.说明书要内容充实、字迹工整、文词通顺、文、图、表、数据兼备，总计不少于1.5万字。

摘 要
数字控制是近代发展起来的一种自动化控制技术是用数字化信号对机床运动极其加工过程进行控制的一种方法,随着科学技术的迅猛发展，数控机床已经是一个国家机械工业水平的重要标准。
数控机床是装有程序控制系统的机床。该系统能够逻辑地处理具有使用号码，或其他符号编码指令规定的程序。数控机床是以数控技术为代表的新技术对传统制造产业的渗透形成的机电一体化产品，起技术范围覆盖很多领域：（1）机械制造技术（2）信息处理、加工、传输技术；（3）自动控制技术；（4）伺服驱动技术；（5）传感技术；(6软件技术等。计算机对传统机械业的渗透，完全改变了制造业。制造业不但成为工业化的象征，而且由于信息技术的渗透，使制造业犹如朝阳产业，具有广阔的发展天地。数控机床就是将加工过程所需的各种步骤以及刀具与工件之间的相对位移量都是用数字化的代码来表示。通过控制介质数字信息送入专用区域通用的计算机。计算机对输入的信息进行处理，发出各种指令来控制机床的伺服系统或其他执行元件，使机床自动加工出所需要的工件。
关键词：机械设计；数控三坐标铣床；主轴；数控系统。

目 录
第一章 数控机床产生和发展趋势··························1
1.1课题的意义············································1
1.2数控机床的产生背景····································1
1.3数控机床的发展趋势····································2
第二章 数控机床的组成及优点····························5
2.1数控机床的组成········································5
2.2数控机床的工作原理····································6
2.3数控机床的优点········································7
第三章 数控铣床的主传动传动设计·······················8
3.1概述··················································8
3.1.1主传动设计要求······································8
3.1.2数控机床主轴的变速方式······························8
3.2主传动系统设计········································9
3.2.1主传动系统参数······································9
3.2.2 调速电动机的功率和转矩特性 ························10
3.2.3 驱动电动机和主轴功率特性的匹配设计·················11
3.3主传动系统传动副设计·································12
3.4 齿轮传动设计计算·····································16
3.5主轴组件设计·········································22
参考文献················································27
致谢····················································28