进给运动

And it is very difficult to control the tool contouring with nanometer lever accuracy.

课题研究的主要内容包括：超精密机床进给机构的运动特性研究，进给系统的伺服控制技术和跟踪控制技术研究，两轴联动轮廓误差控制技术研究等。

It's discussed that self-excitation vibration mechanism with creeping phenomenon for lower motion parts running speed in NC machine tool feed system.

讨论了数控机床进给系统中因运动部件转动速度较低，因而产生爬行现象的自激振动机理；通过对进给系统建立运动模型、导出振动方程从而对爬行现象进行了理论分析。

To improve the manufacturing capability of shoe tree in our country and enhancethe market competition, this paper studys a new method of motion control formachining shoe tree with NC machinetool. This paper discusses a method ofoptimizing the transmission system ,analyzing the stability of Servo System andascertaining every gains of servo system through dynamics emulation, analyzing themotion control of velocity and acceleration, programming to build NC programautomatically and developping a trajectory emulation software to emulate the tool'smachining movement.

为了提高我国鞋楦制造水平，增强产品市场竞争力，本文研究了鞋楦数控加工运动控制方法；对鞋楦机床的数控进给传动系统进行了优化设计和载荷匹配分析；分析了伺服控制系统的稳定性，并通过动态仿真确定伺服系统各环节的增益系数；分析了鞋楦加工运动速度和加速度控制方法；编软件自动生成数控程序；最后开发了鞋楦数控加工仿真软件。

The design contains collectivity distribution design, principle axis design, landscape orientation feed design, portrait feed design, circumgyrate worktable design.

此次设计包括机床的总体布局设计，主轴运动的设计，横向进给，纵向进給，回转方向运动的设计。

The table base with the table backand forward is Y. The spindle head going up and down is thedirection of Z axis feed. The Z motor takes with brake. when thepower is cut off, the motor stops in order to prevent the spindlehead fall down because of self-gravity.

工作台底座带工作台前后运动为Y轴方向。Z向进给为主轴头的上下运动，并且Z向电动机是带制动器的，当断电时，Z向刹紧，以防主轴头因自重而下滑。

The thesis designs that PLC controls four servo electric motors using Aimosheng EC20H , the rocker arm realizing beam drill goes up and down , the rocker arm rotates , the main spindle box slides , the chief axis moves forward to give axial four action , PLCs the motion controlling one frequency conversion electric motor at the same time realizing the machine tool host moving the revolution being a chief axis.

本论文设计使用艾默生EC20H PLC控制四台伺服电机，实现摇臂钻床的摇臂升降、摇臂旋转、主轴箱滑动、主轴进给四个轴向的动作，PLC同时控制一台变频电机实现机床的主运动即主轴的旋转运动。

High-speed feed may Ball screw, sport, high efficiency, small heat, so can achieve high-speed feed.

高速进给可能滚珠丝杠副由于运动效率高、发热小、所以可实现高速进给。

Motor driven ball screw to achieve the main cutting me up and down the movement; the main movement is driven by the hydraulic motor rotating the spindle in order to achieve the cutting tool on the workpiece; radial feed through the nut and screw to achieve manually.

电机带动滚珠丝杠实现主切削箱的上下运动；主运动是由液压马达带动主轴的旋转，从而实现刀具对工件的切削；径向进给是通过螺母与丝杠手动实现的。

Carry on the numerical control transformation to the ordinary lathe. Mainly vertical and horizontal enter give system transform into by what microcontroller. The knife rest is transformed into the gyration knife rest that can be changed one hundred sheets automatically.

对普通车床进行数控化改造，主要是将纵向和横向进给系统改造成为用微控制器控制的，能独立运动的进给伺服系统；刀架改造成为能自动换刀的回转刀架。

Feed system uses open-loop control, stepper motor driven by the slowdown after the ball screw. driven Tool for horizontal and vertical movement; After transformation, the introduction of automatic lathe transfer Tool for automatic tool change function; To achieve automatic screw machining, in the original round of the initiative pegged to the installation of the axis of photoelectric pulse generator.

进给系统采用开环控制，由步进电机经减速后驱动滚珠丝杠，带动刀架进行横向和纵向运动；改造后的车床采用自动转位刀架实现自动换刀功能；为了实现自动螺纹切削加工，在原挂轮主动轴处安装了光电脉冲发生器。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。