美国PMC公司管加工机床的技术特点

从设计原理，结构和性能等方面分析了美国ＰＭＣ公司制造的这车丝机，接箍车丝机，切管机和接箍切断机等主要石油专用管材加工机床的技术特点，在概托其先进性的同时，也指出其存在的不足之处。     

热模锻压力机右侧机架精加工后的补焊及热处理

本文所述的整体机架预热和补焊新技术—梯形分段平焊、双面增肉交错堆焊以及热处理新技术—在550～600℃下局部消除焊接应力、在250℃下长时间消除整体机架残余应力,是对精加工后的大型铸钢零部件缺陷修复的正确工艺方案,具有推广交流意义。     

汽车零部件工业的柔性制造

阐述了加工中心的发展趋势；介绍了采用柔性制造、提高切削速度和超精密机床结构等问题；着重叙述了加中心在汽车零部件工业中的应用。     

数控加工路线的确定原则与选择要点

提出数控加工中加工路线的确定原则和选择要点,以保证加工质量与提高生产效率。     

数控机床联网与数控程序管理整体方案

为了解决传统的单机生产模式，提出了一套完整的数控机床联网方案．通过程序编辑、数据库管理和程序传输，用一台计算机可以进行多台数控机床的程序管理和程序传输，从而提高了数控加工的灵活性与效率。     

On the stabilizing and destabilizing effects of damping in wood cutting machines

In this paper an analytical investigation of the possibility of employing damping elements to prevent chatter instability in wood machining is presented. A simplified model of a two-degree-of-freedom machine for wood cutting is first established. Then, the stabilizing effect of damping on the initially unstable and undamped system is investigated. The influence of damping on flutter and divergence instability is analyzed separately following different approaches. Some simplified assumptions are made to facilitate the analysis and a set of explicit conditions ensuring stability is found. Since the studied system is nonconservative, not only the effect of damping on the initially unstable system is investigated, but also its effect on the initially stable system. In particular, a condition preventing the destabilization of the system is achieved through the eigenvalue sensitivity analysis. The results attained might ensure important productivity improvements in real wood machining applications.     

Improvement of form accuracy in hybrid machining of microstructures

Micromachining is gaining popularity due to recent advancements in Micro Electro Mechanical Systems. Using conventional micromachining, it is relatively difficult to produce moving components in the order of microns. In this study, an attempt is made to fabricate microstructures using a combination of turning and electrodischarge machining (EDM). Several sets of experiments have been performed to study the characteristics of the hybrid machining process. From the experiments, it has been observed that a higher form of accuracy could be obtained by integrating the on-machine fabrication of the tool and by subsequently using the same tool for EDM. The main cause of the form error is due to the deflection of the shaft during turning. Hence, an attempt is made to observe the deflection of the shaft using a deflection sensor. The influence of micro-EDM parameters such as feed rate, discharge circuits, and gap control parameters on material removal rate and tool wear is also discussed in this study.     

数控自动编程系统中几种后处理模块的修改

通过修改Mastercam软件系统的后处理文件，解决了生民的NC代码与多种数控机床不通用问题，如删除NC文件中不必要的程序段、加入特定程序段、改变NC程序格式、改变插补方式等。修改后处理的文件可提高加工的效率，使NC程序更优化。     

自由曲面的CNC直接插补加工技术

在ＣＮＣ系统上直接根据曲面几何定义与加工工艺参数对多轴贡面加工的连续运动轨迹进行实时插补控制，在ＣＮＣ上直接在ＡＰＴ高级语言编程，极大地科化了零件程序，并可在线修改与补偿机床运动结构、刀具形状尺寸及加工作量等工艺参数，使曲在线曲面精加工经济而高效。在单ＣＰＵ硬件环境下实现了从一般二次曲线到复杂的参数组合曲面，从两轴加工到复杂的五轴联动功能，可采用多种加工刀具与加工方式，可实时检测与处理刀具干涉，并     

电解加工测试方法的研究进展

为了配合电解加工成形规律的研究和新技术的开发,对电解加工测试手段及研究方法进行了调研.实例证明,测试手段与加工技术相辅相成.将计算机辅助测试、仿真、电化学测试、SEM和AES分析手段与工艺试验相结合,有利于深入了解电解加工成形规律.提出了在一定条件下将测试手段与其他单元技术集成将产生新技术的理念.