文档介绍：摘要
螺纹球形轴是组成机器的重要零件之一,其主要功能是支持作回转运动的传动零件(如齿轮、蜗轮等),并传递运动和动力。这导致轴类的加工成为了数控车床重要的课题, 直齿圆柱齿轮轴是典型的数控机床典型的例子,数控机床集计算机技术、电子技术、自动控制、传感测量、机械制造、网络通信技术于一体,是典型的机电一体化产品,它的发展和运用,开创了制造业的新时代,改变了制造业的生产方式、产业结构、管理方式,使世界制造业的格局发生了巨大变化。现代的CAD/CAM、FMS、CIMS等,都是建立在数控技术之上。数控技术水平的高低已成为衡量一个国家制造业现代化程度的核心标志,实现加工机床及生产过程数控化,已经成为当今制造业的发展方向。
数控系统是数控机床的控制部分,C装置、主轴及进给伺服驱动装置,以及主轴电动机、进给电动机和与其相关的检测反馈元件。一个数控系统性能的好坏是与上述各个环节的性能密切相关的。为了达到一定的精度要求,本次设计对进给伺服系统采用了开环控制。用直流伺服电机做执行部件。通过PWM调速系统来控制电机;利用LM629驱动PWM;采用编码盘作为主轴的速度检测元件来构成精度较高的半闭环控制。
在科技迅猛发展的今天,随着自动信息处理、数据处理以及电子计算机的出现,给自动化技术带来了新的概念,用数字化信号对机床运动及其加工过程进行控制,推动了机床自动化的发展。因此,数控机床能够解决普通机床难于胜任的问题。
关键词:轴,数控机床,数控系统,伺服单元,半闭环控制,主轴
Abstract
It was representative electromechanical integration product,its extend and handle,initiate know clearly manufacturing epoch,transfer know clearly manufacturing churn , industrial structure, supervisor mode,dispose world manufacturing structure occur know clearly greatness change to out into that numerically-controlled machine puter technology, electronics, auto control, transducer measure, machine manufacturing, munication technology to oneness. The kernel attribute,realize process tool and/or churn numerical control melt,have BECAME today manufacturing trend for out of the modern CAD/CAM , firms , cams wait,big city yes rest up on numerical control transducer p .p .m. Numerical control technique level height afterwards BECAME scale one state manufacturing up to date.
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