主轴

Motion synchronization between tool in X direction and principal axis rotation was controlled by electronic gearbox in cam turning. And profiling mechanism could be superseded by servo tool-holder. Linear motor direct drive servo tool-holder was designed, and host-slave control system with PC and DSP was developed for the require of high-speed and realtime servo. The technical process was analyzed in cam turning. Servo tool holder with tool swinging and principal axis variable rotate speed were presented to keep constant cutting angle and speed.

将电子齿轮箱用于凸轮车削加工系统的传动，以伺服刀架取代了传统加工的靠模装置，实现了刀具X方向直线运动与机床主轴转动的同步控制；设计了直线电机直接驱动的伺服刀架及基于PC与DSP构成的上—下位机控制结构，采用DSP进行实时控制以满足高速伺服需要；对凸轮加工过程的工艺特点与恒角度、恒速度车削进行研究，提出了具有刀具摆动功能的伺服刀架与机床主轴变转速运动方案。

Based on the hierarchical express of tool and workpiece, overlapping test between OBBs and octants of the surfaces octree with the separation axis theorem is implemented.

在对主轴头、刀具体和被加工工件进行层次化近似表示的基础上，运用分离轴理论实现了对主轴头及刀具体包围盒和工件八叉树节点之间的相交测试。

According to these theories, a special mechanical test platform is established, the design and debugging of the temperature signal processing board are finished and the data acquisition and analysis system about the High speed motorized spindle is established based on the PC and data acquisition card.

在上述理论研究的基础上，搭建了高速电主轴专用的机械平台，完成了温度信号调理板的设计与调试，并构建了基于PC+数据采集卡的高速电主轴数据采集及分析系统。

With the development of high speed machining,the request of motorized spindle become more and more high.

随着高速加工的发展，对电主轴的要求也越来越高，电主轴的发热成为一个有待解决的重大难题。

The spindle speed can be easily specified and the spindly can be turned on in a forward or reverse direction.

主轴速度的指定很简单。主轴可丄方向转动，也可反方向转动。

Based on the requirements of ascertaining the orientation and dimension of toy major axis, calculating the flaming dimension and speed along with the toy major axis in American standard consumer safety specification for toy safety, combine with PLC control technology, high-performance and fine-segmentation driver as well as step-in motor.

基于美国玩具安全中要求确定玩具的主轴线方向和尺寸，并沿主轴线方向计算玩具燃烧长度和速度的需求，结合PLC控制技术、高性能细分型驱动装置和步进电机的工作原理，对研制玩具燃烧测试仪的工作原理、工作过程、结构设计以及软硬件结构和技术特性进行了详细论述，指出此测试仪可满足美国玩具燃烧测试需求。

If the straight line linking the nose and tail is defined as the major axis of the aircraft, any aircraft boundary is symmetric about its major axis.

尽管不同用途、不同国度生产的飞机，其形状、大小千差万别，但如果将机首与机尾的中心直线方向定义为飞机的主轴方向，则任何一架飞机的边缘图像都是关于主轴对称的。

In this paper ,to overcome the shortcomings in 3MK133 Groove Grinder's hybrid spindle system that the shallow slots of the throttler are easy to be blocked and difficult to be disassembled to clean,we use the throttler which is put on the big-side surface of the conical bearing to replace the traditional throttler, change gap throttling to capillary throttling, and adjust the taper of the conical bearing , oil return way , seals and sealed mode.

针对 3MK133沟道磨床动静压主轴系统中，节流器浅沟容易堵塞及拆卸清洗不便等缺陷，提出采用端置式节流器替代原有的内置式浅沟节流器，变间隙节流为毛细管节流，并相应调整了主轴系统中圆锥轴承的锥度、回油通路、密封装置及密封方式。

We found that the toolholder made according to the ISO 12164 1 can not entirely contact with the spindle bore under the action of the centrifugal forces.

研究表明，在离心力的作用下，按照ISO12 16 4 1制造的刀柄不会与主轴完全接触，极大地影响了主轴/刀具的联结特性。

The main content of this dissertation can be described as follows: Firstly, the precision measuring theory of spindle rotatory error by the single, double, trinary sensor respectively is researched more thoroughly along with the elimination principle of measurement deviation. According to the characteristic of boring, a new measuring theory and its evaluation criteria of two radiating sensors is proposed based on the theory of relative axis trace movement.

全文围绕实现主轴回转误差的测量与补偿理论机器在镗削加工中的应用研究展开，具体内容概括如下：首先，在分析主轴回转误差的精密测试理论之后、对单传感器、双传感器、三传感器方法的测试理论，测量偏差的消偏原理等理论进行深入地研究。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。