面向对象的电力变压器电磁设计软件的开发

介绍了一个面向对象进行电力变压器电磁设计计算的软件，论述了面向对象设计方法在定义软件数据结构时的应用，指出了该软件的优点。     

面向对象CFD有限元集成软件的应用开发研究

提出一种新的CFD软件的开发思想和实现方法：面向对象有限元集成化软件。介绍了该软件系统3个方面的技术特点，即：强大的有限元计算能力、高效的面向对象程序设计方法和功能完善的集成化软件体系。     

面向对象的数控软件开发平台及实现

针对数控系统软件可重用性差的现状，采用建立面向对象的数控软件模型方法来提高数控软件的动态扩充性。运用面向对象技术开发了达用于WINDOWS环境的应用软件。该仿真软件具有较强的实用性和先进性。对刀具轨迹动态仿真和加工过程动态仿真技术进行了重点介绍。软件运行结果证明了其有效性和正确性。     

机电一体化系统建模技术与仿真软件的研究与分析

总结了国际上目前研究的几种可以实现自动向数学模型转化的机电一体化系统理想的物理模型建立的方法，即键合图方法、面向对象的方法、方块图方法、系统图方法和混合Petri网方法。分析研究了由Lancaster大学EDC(Engineering Design Center)中心的研究者们开发的计算机辅助机电一体化系统概念设计的建模与仿真软件Schemebuilder，研究了用键合图方法建模的仿真软件20-sim和使用面向对象方法建模的仿真软件Dymola，以及使用方块图建模的控制系统仿真软件Matlab和机械机构系统仿真软件Adams。最后总结了机电一体化建模与仿真的发展趋势，即机电相结合的机电一体化系统仿真软件为机电一体化系统理想的建模和仿真环境。     

开放式控制器轴运动控制对象模型

介绍了作者在开放式控制器软件体系结构的研究工作中，采用面向对象技术对基本轴控制过程建立软件模型的过程，证明了采用面向对象技术建立具有实时性要求的控制器软件模型的可行性，同时保证了软件模型的开放化特征。     

车辆动力学时间离散建模及面向对象方法的仿真实现

通过数值离散方法建立了车辆动力学的时间离散模型，为对车辆工况进行实时监测和控制奠定了基础。将车辆及各部件作为对象，运用面向对象方法建立了车辆动力学仿真软件模型，面向对象方法所特有的封装、继承等特点使系统具有结构清晰、直观、扩展和维护方便等特点。     

基于Windows的数控系统

在研究开放式数控系统概念的基础上，讨论了软件数控的实现方法，介绍了一种在windows98下利用面向对象的设计方法实现的全软件数控系统。该系统具有良好的可扩充性，实时性强，人机界面友好等特点，适用于经济型数控铣床、数控车床。     

面向对象的轨道衡设计方法

为了适应轨道衡发展的需要，面对日益增多的轨道衡产品，汲取软件危机的经验和教训，提出轨道衡设计中的面向对象方法。供诸位同仁指正。     

空调安装工程概预算软件开发

采用VisualC^ 6.0开发工具及面向对象的设计方法，以空调风管系统安装工程为例，探讨了开发空调安装工程概预算软件的方法。     

基于VisualC＋＋的数控软件的设计

基于Window下的CNC是数控技术发展的必然趋势，提出了运用面向对象的思想来实现多任务处理的方法，并介绍了数控软件的体系结构和实现的相关技术。     

差载轴承用于汽车轮毂轴承的设计及其可靠性研究浅析

为了不断提高轴承的寿命与精度,目前轴承所使用的材料、设备、工艺都有了飞跃的发展.轴承加工单位在不断提高这些加工精度与研发材料达到某个极限时,不得不从轴承设计角度上对通用轴承进行创新.由于“差载轴承”属新型轴承产品,尚无详细的寿命及其精度方面的理论分析,以汽车轮毂轴承为主要事例,就该新轴承相对传统结构的轴承,有效提高了寿命与极限转速,做了表浅性研究分析,为行业提供参考和借鉴.     

Cage Speed of Hydrodynamic Rolling Hybrid Bearings

Hydrodynamic bearings are subjected to wear during starts and stops due to the absence of sufficient film pressure to effect complete separation of the sliding surfaces. In an earlier publication, our group reported the development of a new hydrodynamic rolling hybrid bearing (HRHB) to overcome the wear problem in hydrodynamic bearings. In the configuration, the transition of operation modes between the rolling bearing supporting state and the hydrodynamic bearing supporting state was realized by the clearance of the rolling bearing. Here we report on the development of a method to identify the operation modes for HRHBs based on monitoring the cage speed of the rolling bearing. The variation of cage speed with the shaft speed is measured. The effects of external load and starting time on the cage speed are also investigated experimentally. The results show that variation in the cage speed reflects changes in the load on the rolling bearing, as well as the operation modes of the HRHBs. With increases in the shaft speed, the variation in the cage speed presents three stages: the increasing stage, the decreasing stage, and the stationary stage. In the first two stages, the HRHB works at the rolling bearing supporting state while in stationary stage, the HRHB works at the hydrodynamic bearing supporting state. In additions to its property of no wear sufferance during starts and stops, compared to hydrodynamic bearings there is little risk of catastrophic failure with HRHBs during any interruption to the lubricant supply and compared to rolling bearings there is no fatigue failure. Therefore this hybrid design is useful at very high speeds.     

Load Capacity Estimation of Foil Air Journal Bearings for Oil-Free Turbomachinery Applications

This paper introduces a simple “Rule of Thumb” (ROT) method to estimate the load capacity of foil air journal bearings, which are self-acting compliant-surface hydrodynamic bearings being considered for Oil-Free turbomachinery applications such as gas turbine engines. The ROT is based on first principles and data available in the literature and it relates bearing load capacity to the bearing size and speed through an empirically based load capacity coefficient, D. It is shown that load capacity is a linear function of bearing surface velocity and bearing projected area. Furthermore, it was found that the load capacity coefficient, D, is related to the design features of the bearing compliant members and operating conditions (speed and ambient temperature). Early bearing designs with basic or “first generation” compliant support elements have relatively low load capacity. More advanced bearings, in which the compliance of the support structure is tailored, have load capacities up to five times those of simpler designs. The ROT enables simplified load capacity estimation for foil air journal bearings and can guide development of new Oil-Free turbomachinery systems.     

Study on the basic characteristics of a vortex bearing element

A new air bearing element called as vortex bearing is introduced and investigated in this study. In comparison to the conventional orifice bearing, the new bearing is characterized by blowing air through tangential nozzles to form a vortex flow. The study focuses on one vortex-bearing element to investigate its basic characteristics (flow rate characteristics, pressure and velocity distributions, load capacity, and static stiffness). We show that the vortex bearing uses vortex flow to form a sunken negative pressure distribution at the central area, so that it can narrow the gap clearance between the workpiece and the bearing and thereby improve the flotation stiffness. Moreover, blowing air tangentially instead of emitting onto the workpiece directly can avoid the formation of intense pressure distribution on the workpiece’s surface, which would reduce the partial stress concentration acting on the workpiece. For these reasons, the new vortex bearing is applicable in air conveyors that float and transport workpieces such as glass substrates and silicon wafers.     

数控曲轴端面磨床简介

针对曲轴的普通端面磨削和特殊“凸面”端面磨削，重点介绍了一款压缩机曲轴端面精密数控磨床，其精度高、效率高、自动化水平高、性能稳定等优良性能，满足了大批量生产过程中零件加工Cpk值，打破了进口机床在该领域的一统天下。     

弹性流体静压轴承

The elasto-hydraustatic bearing is a new type of hydraustatic bearing. In action, it is similar to some conventional type of hydraustatic bearing The difference lies in the fact that in a Conventional hydraustatic bearing, the inside surface of the bearing shell must bs made to a certain configuration to prodvce the by dravstatic action. In this new type of bearing, the bearing shell is made to the form of a plain cylindrical bushing with a circumferential groove in the middle. (Fig 3-1) when the oil pressure is low, it will function as a plain sliding bearing. But when the pressure of oil is high, the bearing Shell, mostly made of some elastomer, will deform and the diameter of the bearing at the middle will be larger than the diameter at both ends. As is well known, this taper shaped bearing shell will have hydracstatic action, (Fig 3-2) Experiments show that the load carrying capacity of this kind of hrdravstatic bearing can be computed by the following empirical formula;W=0.12xDxL when the bearing bushing is made of metal, the outside of the bushing must be hollowed out(Fig3-3) to make it easier to deform.There are many advantage of this type of hydraustatic bearing. It is simple in form and very easy to make. When the pressure of the oil drops, it will foction as a plain bearing and hence is very safe and reliable. As there is no groove at the inside of the bearing shell, it will function as a squeeze film bearing under shock or vibrating load and has a high capacity.     

中国TZ牌轧辊油膜轴承的发展和应用

介绍了太重集团油膜轴承的发展和TZ轧辊油膜轴承新技术的结构特点及应用。     

一种多线切割机主导辊轴承冷却方法应用的研究

多线切割机主导辊轴承（以下简称轴承）温度升高是研究中关注的问题.以控制轴承内、外圈的温度为研究对象,通过水冷的方法控制轴承座温度,进而控制轴承的温度.验证了采用水冷结构控制轴承温度的新方式,其结果显示该方法是可行的.     

附加轴向力法计算向心推力滚动轴承轴向力

向心推力滚动轴承本身所受轴向力通常采用判断“压紧”端和“放松”端的方法来求解,现有的判别方法既不完备,又容易出错。为了完善现有的判别方法,通过轴系结构的分析,引入轴承安装方式这一新增判别条件。为了简化计算过程,通过力学推导,提出了一种不需要利用判别方法,直接得到向心推力滚动轴承本身所受轴向力的新方法,称为附加轴向力法,即向心推力滚动轴承本身所受轴向力等于其本身派生轴向力与其本身所受附加轴向力之和,并通过与原先方法的结果对比验证了新方法的正确性。     

方钻杆旋塞阀的故障分析和改进

阐述了方钻杆旋塞阀的工作原理,分析了旋塞阀的主要故障.用Pro/E对旋钮进行结构有限元分析,讨论了旋钮的变形、应力与应变的分布.将浮动套轴承用于旋塞阀,在旋钮处安装-浮动套轴承,将旋钮的滑动摩擦变为浮动套轴承的滑动摩擦,减小开关阻力,为新型旋塞阀的研制提供一定的理论参考.