学 士 学 位 论 文
THESIS OF BACHELOR
( 2012 年 )
题 目:
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目 录
摘要····························································2
Abstract························································3
第一章:绪论……………………………………………………………4
1.1数控机床的概念、组成、特点 …………………………………4
1.1.1数控机床的概念………………………………………………4
1.1.2数控机床的组成…………………………………………………4
1.1.3数控机床的特点…………………………………………………5
1.2数控机床的发张趋势与现状………………………………………5
1.3设计的内容与方法…………………………………………………6
第二章:数控机床进给传动系统总体方案 ……………………………7
2.1进给传动系统的组成和原理………………………………………7
2.2进给系统传动部件…………………………………………………8
2.3进给传动伺服系统的选择…………………………………………9
2.4系统设计要求·········································10
2.5方案设计内容·········································11
第三章:机床横向进给系统机械部分设计计算 ………………………14
3.1确定系统脉冲量……………………………………………………14
3.2切削力计算…………………………………………………………15
3.3滚珠丝杆螺母副的计算和选型···························15
3.4齿轮进给齿轮箱传动比计算·····························19
3.5纵向进给步进电机计算·································20
3.4步进电机的计算和选型……………………………………………21
第四章:微机数控机床硬件系统的分析和设计 …………………………24
4.1微型计算机的选择…………………………………………………24
4.1.1 MCS-51的信号引脚……………………………………………24
4.1.2 8051单片机基本组成 …………………………………………26
4.2扩展存储器的选择……………………………………………………27
4.3确定I/O及键盘接口………………………………………………28
4.3.1按键开关去抖动问题……………………………………………29
4.3.2 按键连接方式 …………………………………………………30
4.3.3键盘扫描控制方式………………………………………………31
结束语 ……………………………………………………………………33
参考文献 …………………………………………………………………34
摘 要:
随着科学技术和社会的不断发展,社会对产品多样化的要求日益提高,产品更新换代越来越快,多品种小批量生产比重加大,零件形状越来越复杂,精度越来越高,此外,激烈的市场竞争要求产品研制周期越来越短,传统的加工设备和制造手段已经难于满足这种变化,为了解决这些问题,数控机床就这样应运而生。
在本次设计中,就包括了关于数控技术的基础知识,并且针对本次设计的课题,拟定了一系列的方案,进给系统的总体方案,数控车床进给传动系统的机械部分,以及数控系统的硬件分析和设计。
关键字:数控机床 单片机数控系统 伺服电机 传动系统
Abstract As science and technology and continuous development of society, society's demands for increasing product diversification, product upgrades faster and faster, and more varieties of small batch production increased in importance, more and more complex shape parts, increasing accuracy, In addition, the fierce market competition requires product development cycles are getting shorter, conventional processing equipment and manufacturing methods have been difficult to meet such changes, in order to solve these problems, numerical control machine tools came into being this way.
In this design, it includes information on the basics of digital technology and design for this project, developed a series of solutions into the overall solution to the system, CNC lathe feed drive system of mechanical parts, and CNC system hardware analysis and design.
Keywords: CNC machine CNC servo motor drive system microcontroller