镗杆

The results of simulation and experiment indicate that the control system can restrain the vibration of boring bar effectively during cutting process.

理论仿真和实验分析结果表明，该装置能够有效抑制镗削过程中镗杆的振动，且结构简单，易于实现。

Comparing with boring bar,numerical results reveal that boring bar with dynamic absorber has the effect of vibration decrease.

通过和普通镗杆对比分析，结果表明动力减振镗杆有效地达到了减振效果。

Combining with National Natural Science Foundation of China -"Research on theory and technique of magnetorheological intelligent boring bar with self-chatter-suppression" NO.

本论文结合国家自然科学基金项目&基于磁流变液自抑振的智能镗杆构件理论与方法研究&(No.50405036)，开展了基于磁流变自抑振智能镗杆的颤振控制技术研究。

Modeling and derivation mathematics result of the use of Matlab software Simulation tests of its accuracy and error analysis, to verify the measurement of two boring bar/boring displacement signal the feasibility of the entire system, so as to the smooth development has laid a theoretical foundation.

介绍了两点法测量镗刀位置信号的方案构思，采用最小二乘法对镗杆的圆度误差和被测圆面的偏心量进行了建模计算，并对数学推导的结果利用Matlab软件进行仿真检验，对其精度和误差作了分析，验证了两点法测量镗杆／镗刀位移信号的可行性，从而为整个系统的顺利开发奠定了理论基础。

Finally, the experimental setup of MR intelligent boring bar was built on the CA6140 type lathe. The experimental results show that the method can suppress the chatter efficiently and can improve the surface quality of workpieces significantly, whose roughness has decreased from 10 μm to 1.5 μm.

最后，在车床CA6140上搭建了磁流变智能镗杆的颤振抑制实验系统，实验结果表明，变结构刚度方法能够快速高效地抑制镗削过程中产生的颤振，并且使加工表面的粗糙度Ra从10μm降至1.5μm，大幅度提高了加工表面质量。

This paper introduced the mechanism of vibration in the process of deep hole boring ,developed a dynamic modal of the damping boring bar,optimizing the parameters of the damping system,analyzed the transient dynamic and harmonic response of the damping boring bar.

介绍了深孔镗削加工过程中产生振颤的机理，建立了减振镗杆的动力学模型，在此基础上优化减振系统的参数，并且对减振镗杆进行瞬态动力学和谐响应分析，分析结果表明该减振系统具有良好的减振性能。

One kind of PCD boring tool and a fine adjustment boring bar,which are suitably used in precision finishing the surface of pinhole of combustion engine piston,are introduced.

介绍了一种适用于发动机活塞销孔表面精镗加工用聚晶金刚石镗刀和可微调刀具尺寸的精密微调镗杆，该镗刀和镗杆组合具有较高的加工精度和表面粗糙度精度以及调整方便、使用寿命长的特点。

On the base of studying the forming mechanism of spire ditches in deep-hole boring process, this paper analyses theoretically the effect of the boring bar diameter on the oscillation and spire ditches and established the mechanical model.

在研究深孔镗削螺旋沟产生机理的基础上，对深孔镗削加工过程中镗杆直径对振动及螺旋沟的影响进行了理论分析及力学建模，并通过试验研究了增大镗杆直径对减小振动和抑制螺旋沟的积极作用。

The boring bar was designed into a new structure consisting of two coaxial bars. As a result, the micro-boring bar can be made with relatively smaller outer diameter, which was suitable for boring smaller and deeper hole, even the measuring and compensating sensors have been incorporated.

但是，在镗削加工中就遇到了较大困难，因为镗杆的径向尺寸受到被镗孔尺寸的严格限制，用于误差在线检测的传感器和用于误差在线补偿驱动的传感器不能直接安装在镗杆内。

A series of special boring rod s made by using fine control boring unit solves the problem that produces easily rejected parts because of difficult adjustment in machining high-precision hole of shell components in ordinary boring machine.

利用微调精镗镗刀头设计制造了系列专用镗杆，解决了壳体类零件在普通镗床上加工高精度孔时，因对刀困难而出现辅助时间过长并易产生废品的问题，使生产效率和产品质量得到大幅度提高。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。