对削

This method possesses important theory and practice meaning. In this article, the method and steps of milling rotators tool path was defined on the basis of research and summary on free-surface .

本文在对自由曲面、螺旋曲面的加工方法及步骤进行详细的研究和归纳总结的基础上，确定了采用四自由度无瞬心包络铣削方法求解螺杆压缩机阴阳转子加工刀具空间轨迹的方法和步骤。

In order to solve this kind of machining problems,bore reaming process with stepped reaming cutter is applied.Through modification of common reamers and proper machining process applied,combined bore quality can be effectively ensured and machining productivity is satisfied.

为解决此类工件的加工难题，采用阶梯铰刀铰削孔的加工工艺方法，通过对普通铰刀进行改制，并采取适当的加工工艺，可有效确保上述复合孔的加工质量，并满足加工效率的要求。

Grinding experiments are conducted on bearing raceways to confirm the simulation results.

我们还进一步通过对轴承滚道进行试验磨削来验证模拟结果。

In this dissertation, in-depth studies are made on the multi-sensors monitoring technology in the milling process.

本文对多传感器监测技术进行了深入研究，并就铣削加工过程刀具状态监测技术进行了实验研究。

The stability and cutting forces in high speed milling process can be forecasted with the model.

利用该模型，可对铣削过程的特征参数如稳定性、切削力等进行预测。

The law of cutting force and temperature in milling process are studied using this model, and the cutting force and temperature curves are established.

同时在对切削力和切削温度实验详细设计和改进的基础上，测量了铣削过程切削力和切削温度曲线，分析了它们的数值及变化规律。

A time-delay reconstruction of a phase space equal to the original system has been made by analyzing of observed time series of current signal and vibratory signal, and the methods of choosing properly the embedding dimension and delay-time for phase space reconstruction have been studied in detail.

本文利用振动信号和电流信号时间序列，采用时间延迟法，重构了系统的等价相空间，并详细研究了嵌入维数及时间延迟的选择对重构相空间的影响，计算了铣削加工典型过程的Lyapunov指数谱，分析了系统的混沌特性；同时采用P-G算法，计算了混沌动力系统的奇异吸引子的分维数，分析了分维数与系统状态的关系，定量地指示出系统的混沌程度，同时也反映出系统的不可预报程度。

Based on the transfer matrix method and ball bearing analysis theory, the dynamic characteristics of rotor-bearing system of high speed machine tool spindle are researched.

完成5SD51A和5SD18-4等两款高速磨削电主轴的动态设计，分析了各种结构因素对主轴临界转速、不平衡响应和动、静刚度的影响。

The applications of user subprograms,macroprograms and tool plane exchanging in NC milling programming are introduced briefly.

简略介绍了用户子程序、宏程序及刀具平面转换在数控铣削加工编程中的应用，并以实例的形式进行了其应用说明，对读者有借鉴作用。

Through the simulation, you can simulate real processing CNC tool grinding process, and monitor the process.

通过仿真，可以真实的模拟数控工具磨削的加工过程，并对加工过程进行监控。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。