数控车床毕业论文设计.docx
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1、数控车床毕业论文摘要数控车床不仅能够车外圆还能用于镶孔、车端面、钻孔与钱孔。与其他种类的机床相比,车床在生产中使用最广。本论文首先介绍了我国数控机床发展的过程与现状,并分析了其存在的问题;对数控机床的发展趋势进行了探讨;并对JIFCNC-B数控车床主轴箱传动系统进行了设计与计算。主轴箱有安装在精密轴承中的空心主轴和一系列变速齿轮组成。数控车床主轴可以获得在调速范围内的任意速度,以满足加工切削要求。目前,数控车床的发展趋势是通过电气与机械装置进行无级变速。变频电机通过带传动和变速齿轮为主轴提供动力。通常变频电机调速范围3-5,难以满足主轴变速要求;串联变速齿轮则扩大了齿轮的变速范围。本设计将原来
2、的带轮不卸荷结构变为了带轮卸荷结构,使输入轴在带处只受转矩,将轴上的径向力传动到车床机体上,改善了输入轴的受力情况,O关键词:主轴箱,无级调速,传动系统AbstractNC lathe can do boring, facing, drilling and Reaming in addition toturningeThe use of lathes in the production than the other types of machine toolsand more. And compared to other types of machine tools, lathes in th
3、e productionis the most widely used.In this design , the development and current situation of NC machine inChina was introduced and a series of problems were presented .The developmenttrend to NC lathe was discussed.Some countermeasures was presented for thedevelopment of NC machine in China and the
4、n the headstock of JIFCNC-B NClathe has been calculatly designed Headstocks is composed of the hollow spindlewhich is installed in precision bearings and a series of transmission gears. Thespindle can obtain any speed in the speed range to meet the processingrequirements of cutting.At present, the d
5、evelopment trend is to provide a continuously variablespeed through the electrical or mechanical devices Variable Frequency Motorconveys the power through belt drive and a set of transmission gears. The speedrange of Variable Frequency Motor is usually 3-5 , which is difficult to meet thespeed range
6、 requirements of the spindle speed; The transmission gears is toexpand the scope of a variable-speed to meet the speed range of the spindleIn addition, in this design the design of the belt drive has been changed fromthe original unloading structure into the loading structure, transmissed the forcet
7、o the lathe body so that input shaft is only forced torque, improved the forcingstate of the input shaftKey words: headstocks, a continuously variable speed , transmissionSysterm摘要IABSTRACT (英文摘要)II目录Ill第一章绪论11.1 数控车床主传动系统的要求 11.2 数控车床主传动系统方式11. 3国内外数控车床主传动系统的发展 21.1 .1设数控车床发展总趋势21.3 . 2确中国数控车床发展的主要
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