CK516立式数控车床Z向进给传动系统设计.doc

Forpersonaluseonlyinstudyandresearch;mercialuse网络教育学院继续教育学院毕业设计(论文)题目函授站(学****中心)北京学****中心专业06级(春、秋)······································································································································································································································································································································································································(N)········································································································································ ································································结论·······································、自动控制、自动检测及精密机械等高新技术的产物,是技术密集度及自动化程度很高的典型机电一体化加工设备。它与普通机床相比,其优越性是显而易见的,不仅零件加工精度高,产品质量稳定,且自动化程度极高,可减轻工人的体力劳动强度,大大提高了生产效率,特别值得一提的是数控机床可完成普通机床难以完成或根本不能加工的复杂曲面的零件加工,因而数控机床在机械制造业中的地位愈来愈显得重要。、数控装置、伺服系统和机床本体组成。:以指令的形式记载各种加工信息;:接受输入的加工信息,经数控装置运算处理,向伺服系统发出相应的脉冲;:把数控装置的脉冲信号转换成机床运动部件的机械位移;用于实现数控机床的进给伺服控制和主轴伺服控制。:包括,主轴部分、进给系统、刀库和自动换刀装置(ATC)、自动托盘交换装置(APC)等。,分类方法不一。根据不完全统计,目前已有近500种数控机床。根据数控机床的功能和组成,一般分为以下几类:按坐标轴数分类:一般数控机床,数控加工中心机床,多坐标轴数控机床;按特点分类:点位控制数控机床,直线控制数控机床,轮廓控制数控机床;按有无测量装置分类:开环数控系统,半闭环数控系统,闭环数控系统;按功能水平分类:经济型,普及型,高级型。、精密、小批、多变的零件加工问题,是一种灵活的、高效能的自动化机床,尤其对于约占机械加工总量80%的单件、小批量零件的加工,更显示出其特有的灵活性。概括起来,数控机床有以下几方面的特点:,尤其提高了同批零件加工的一致性,使产品质量稳定;,一般约提高效率3-5倍,使