轴承

For example, the roll elastic deformation breaks the statically determinate condition of roll system in duo mill, and this is the main reason of bearing longevity shortening and burning accident; in aluminium foil four-high mill roll system with a 1 mm gap, the ideal position kept by a 3 mm offset is out of effect, some phenomenon such as chock horizontal vibration, gyroscopic effect and micro dimensional dynamic cross happen in fact rolling process, abnormal super and partial load resulted by these is the main reason of the end thrust bearing accident; the thermal deformation of mill roll system accompanying the temperature raising not only changes the roller track age of rolling bearing, but also results a micro dimensional slow dynamic inverse cross that counteracts the gyroscopic effect in a degree.

如二辊高刚度轧机轧辊的弹性弯曲微尺度行为，破坏了辊系机构杆系的静定条件，成为轧机轴承短寿烧损的主要根源；铝箔四辊轧机只具有1mm的有隙辊系，凭借设置3mm偏移距和轧制力平衡产生的水平力以保持轧辊理想定位失去效用，却发生轴承座水平振动现象、陀螺效应和动态交叉微尺度行为，成为止推滚动轴承异常超偏载导致短寿烧损的主要根源；轧机辊系的伴随升温产生的热变形，不仅改变了滚动轴承滚道轮廓，还引起运动副内慢变动态反交叉微尺度行为，抵消陀螺效应的部分动态交叉角度。

By using the computer emulation technique, This paper researched design parameter (the equivalent radial or axial direction stillness , the damp parameter, the bearing pre-tightening force, the span, the extra centralized mass and damp) influence law on dynamical characteristic of the principal axis system, which made a meaningful explorati.

采用计算机仿真技术，研究轴承等效径向刚度与阻尼参数、轴承预紧力、跨距，附加集中质量和阻尼等设计参数对主轴系统动力特性的影响规律，为主轴系统的动态优化设计进行了有意的探索。

According to the vibration signal features of frequency-domain, energy eigenvector was established by means of wavelet packet.

试验结果表明，系统不仅能够检测到轴承故障的存在，而且能够比较准确地识别轴承的故障模式。

This grinding machine processes the way adoption correspond type to whet to pare the way, the work piece install at turn round the work on the stage, turn round with the work pedestal, the emery wheel turns round at the same time, the path of the emery wheel to enter to depend turn round the work pedestal to follow the X direction moves the realization, top of bearings bore and top end face process good after, process with same emery wheel underneath of bearings bore and under carry the noodles, the work piece install once, with guarantee the accuracy.

此磨床的加工方式采用切入式磨削方式，工件安装在回转工作台上，随工作台回转，同时砂轮回转，砂轮的径向进给靠回转工作台沿 X 方向位移实现，上面的轴承孔及上端面加工好后，用同一砂轮加工下面的轴承孔及下端面，工件一次安装，以保证精度。

For example the bearings of high temperature tunnel kiln vehicle, enamelware , the chain of paint baking dry product line, door hinge of high temperature furnace .

使用部门如高温隧道窑车的轴承，搪瓷、油漆烘干线的链条和托辊轴承，高温烘烧炉的门框铰链、垃圾发电燃烧炉等等。

Many experiments indicate that flocculus steel balls possessing reticulate veins surface tend to elastic fluid kinetic lubricating layer and improves of the lubricating conditions of bearings.

而且许多实验表明：表面呈现网状纹理形貌的"绒面"钢球，有利于钢球和套圈之间的点接触区域形成全膜弹流润滑层，使得轴承的润滑状态得到改善，从而实现轴承减振降噪和提高寿命的目的。

High Quality Components: anti-friction bearings fsmooth operation with lower horsepower; front rear bearings fprecise cranksLSEft alignment long sLSEft life; fully enclosed, all metal fan-blade guard; fly wheel precision-balanced fan-bladed fexcellent cooling capacity; heavy duty, sLSEft-driven, gear-type oil pump fgenerous lubrication to critical wear areas flonger pump life; stainless steel, disc-in-plate valves flong wear excellent heat resistance dissipation; valve housings nickel-plated fcorrosion resistance.

高质量部件：低摩擦轴承提供平滑的运行并降低功耗。前后轴承提供精确的曲轴对中，延长曲轴寿命。全封闭风扇防护罩。飞轮经过精确平衡并带有风扇叶片，提供极好的冷却能力。重载型曲轴驱动齿轮式油泵为磨损区域提供充足的润滑。不锈钢阀片耐磨损，散热性好。阀座采用镀镍处理，耐腐蚀。

Theoretical and experimental studies on temperature drop process of freight car bearing under natural convection are done.

为此提出以还原轴承温度的方法描述拦停报警时轴承的实际温度。

In existing technology, the nonnal way is adopting the four-bar linkage mechanism to imitate the arc or the linear movement. On the theoretical analysis, its movement precision can meet the requirement, while in the operation, because of the abrasion of bearings in gemel, which do much greater effect on movement than the former, its movement precision goes much beyond the theoretical value.

现有技术中一般是采用四连杆机构来仿弧线或直线运动，从理论上讲其运动精度是能够满足要求的，但在实际使用中，由于铰链点轴承的磨损（另外，装配时也预留了一定的轴承间隙），对运动轨迹产生的影响很大，其运动精度就大大超出理论值。

This research presented a new guide mechanism and belt driving theory of the abrasive band polishing for inner aperture, satisfied the driving requirement of abrasive belt leading smoothly into grinding area, realized the band grinding and band polishing of inner aperture, developed a abrasive band polishing headstock for of the ball track of ball bearing and roller bearing individually adopting a way of curvature concave oscillating and vibrating, researched the process regular and fundamental process method and parameter of abrasive band polishing of ball track. The results of experiments and tests showed that the surface roughness of ball track by abrasive band polishing can reach Ra0.02μm, and the original geometric cross section shape precision of ball track can be kept.

本项研究提出了砂带研抛内孔的新型导引机构和传带原理，满足了砂带平稳导入内孔磨削区的传动要求，实现了内孔的砂带磨削和研抛；研制了采用弧面摆动和振动方式分别用于球轴承滚道和滚柱轴承滚道研抛的砂带研抛头架；研究了轴承滚道砂带研抛的工艺规律和基本工艺方法、工艺参数；实验测试结果，轴承滚道砂带研抛的表面粗糙度达Ra0.02μm，研抛过程保持了滚道的原始几何截面形状精度。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。