磁力轴承刚度的实验测量方法

在磁力轴承研究中关于磁力轴承刚度存在两种不同的定义,从转子受力分析和控制系统传递函数角度看,这两种刚度定义之间存在差异。针对两种不同的刚度定义分别给出了其测量方法,并设计了磁力轴承刚度测量的实验系统。该实验系统可以实现磁悬浮转子静态悬浮、刚性旋转和柔性旋转工作状态下的刚度测量。     

角接触球轴承外沟位置测量压点移位对测量误差的影响

通过对角接触球轴承外沟位置测量误差的分析,在磨加工过程中对测量误差加以调整,有利于提高双联、多联轴承的配对率和万能组配的合格率。     

角接触球轴承外圈端面跳动测量方法改进

根据角接触球轴承的结构特点，在测量轴承外圈端面跳动中采用了翻转装置，使得测量时装卸轴承非常方便，提高了测量效率．     

The use of sintered metal bearings for high sliding velocities

Results of investigations are discussed concerning the friction and wear behaviour of sliding bearings made by powder metallurgy. The aim of the work was to extend the use of such bearings up to speeds of 12 m/s. From the results obtained, selection guidelines were deduced for the practical use of such bearings under static and dynamic load and compiled in tables for the user. In addition to tribological investigations with conventional sintered bearings, the influence of changed geometry of the bearing bore on the running behaviour of such bearings was also studied, paying attention to the technological production variants. Using this design of bearings it is the aim of the work to create improved preconditions for the generation of partial hydrodynamic load-carrying portions, so decreasing the bearing temperature and, in turn, an increasing fatigue life and reliability. Furthermore, a measuring arrangement is introduced to determine the pressure in the lubrication gap. The measuring principle was evaluated by determining the pressure patterns of massive sliding bearings and comparing them with calculated pressure values. First results of measurements of the pressure build-up in conventional sintered bearings are discussed.     

非接触式轴承启动摩擦力矩测量仪

设计了一种能量转换机构,其产生非接触式驱动力矩驱使轴承转动,然后由非接触式监控机构监测轴承从静态到启动状态,整个测量系统组成反馈回路,通过测量输入能量转换机构的能量参数获得轴承启动摩擦力矩.     

双列调心球轴承轴向游隙测量仪器改进

由于双列调心球面球轴承幅高比较高,轴向游隙无法正常在X194上测量,通过对X194仪器底座的加高改进,实现了双列调心球面球轴承轴向游隙的测量。     

A method of temperature monitoring in fluid film bearings

In the present paper a method to improve temperature monitoring of fluid film bearings is described. The method is tested in an industrial tilting pad thrust bearing. Test results for steady state and transient operating conditions are reported. Temperatures monitored by a thermocouple through the utilisation of the proposed method are compared to those measured by thermocouples in the pad backing and in the collar. The method is also tested on a PTFE-faced bearing. Test results show that the proposed method improves sensitivity to thermal transients in conventional babbitted bearings and provides adequate means of temperature monitoring in the PTFE-faced bearings.     

圆锥滚子轴承外圈过盈配合量对装配高的影响

以33118圆锥滚子轴承为例,介绍了传统轴承过盈配合量与装配高变化量关系的数值计算方法,经与测量结果对比,误差较大(32％).分析其主要原因为计算中将壳体、外圈等效转化为规则圆环,与实际情况不符,故建立包含壳体、轴承实际结构的有限元模型,计算轴承过盈配合量与装配高变化量的关系,与测量结果误差为2.9％,可以满足工程应用...     

An Experimental Study on Film Pressure Circumferential Distribution of Water-Lubricated Rubber Bearings with Multiple Grooves

Experimental research on the water film pressure of water-lubricated rubber bearings with multiple grooves (WLRBMG) was carried out. A test rig was designed that could measure various performance of WLRBMG to further study the properties of the bearing. The experimental results indicated that film pressure circumferential distribution of WLRBMG was different from that of conventional rigid bearings. The relatively low water film pressure led to a partial contact between the shaft and rubber bearings, which will cause significant rubber deformation. Integration of the friction coefficient and orbit of the shaft center also suggest that the WLRBMG operated in mixed lubrication. The multigroove structure had a significant influence on the film pressure circumferential distribution of WLRBMG. By detailed analysis of the experimental results, some properties and working mechanism of the WLRBMG have been found and demonstrated.     

球轴承接触角的测量方法

提出了一种测量球轴承接触角的测量方法并进行了理论分析，设计了相应的测量装置并在实际生产中论证了这种测量方法的可行性和准确性。     

短圆柱滚子轴承内圈滚道宽度的测量

短圆柱滚子轴承内圈滚道宽度的测量一般采用样板测量,本文着重介绍使用仪器测量短圆柱滚子轴承内圈滚道宽度的原理。通过一系列结构连接,先用标准件对表,最后由仪表显示出被测轴承内圈滚道宽度尺寸。     

圆度仪检测技术在控制滚动轴承振动中的应用

针对加工制造有振动要求的滚动轴承,其直接影响振动指标的主要轴承零件(内圈、外圈)难以在生产过程中及时检测控制的问题,通过大量试验与理论推导分析,总结出一种可对轴承内、外圈在生产过程中进行及时、可靠的振动检测控制方法,该方法为使用圆度仪通过测量圆度值中15~500波的数值来考核轴承内、外圈沟道质量,从而达到控制轴承成品振动性能。     

Experimental investigation of air spindle unit thermal characteristics

This paper presents a report on the first stage of a research on the thermal analysis of spindle units with aerostatic bearings and an experimental investigation of temperature distributions. The objective of the present paper is to provide background information for further analysis. A test machine was used running to a maximum rotational speed of 20000 min⁻¹ with a 60 mm diameter spindle supported by aerostatic journal bearings of 20 μm radial clearance, and the temperatures of the housing, bush and the interface between the bush and air film were measured. In addition, the inlet and outlet air temperatures, the air film pressures and the deformations of the housing and spindle were measured. The experimental results show that the heat flow pattern is essentially radial flow, although axial heat flow was observed. The circumferential temperature distribution can be considered to be uniform, and the temperatures are proportional to the square of the spindle speed.     

异型三点接触球轴承轴向游隙的测量方法

针对某异型三点接触球轴承需要在一定载荷下加载测量轴向游隙的要求,提出了一种使用T693S凸出量仪加载测量异型三点接触球轴承内、外圈之间的凸出量,并通过凸出量与内、外圈高度之间的关系计算轴向游隙的方法.试验表明,该方法的检测数值偏离度小于10.3％.     

宽温域向心关节轴承径向游隙试验研究

针对宽温域向心关节轴承径向游隙测量存在的宽温域测量研究少,无测量误差补偿,环境箱使用不标准,位移点测量单一等主要问题,提出了一种降低径向游隙测量误差的测量方法,研制开发了宽温域向心关节轴承试验机,通过多温度阶段自润滑关节轴承径向游隙测量验证了试验机设计的合理性及测量方法的有效性。     

角接触球轴承组配与凸出量测量方法

生产企业制造组配角接触球轴承时,对不同组合方式和载荷要求的角接触球轴承的组配,可通过不同的凸出量测量方法来实现。     

预知性维修中的轴承测振

根据设备磨损的规律说明了预知性维修的必要性;阐述了常用轴承磨损的原因;介绍了测振仪的使用原理及传感器安装要点;通过具体事例证实了轴承测振在预知性维修中起到不可忽视的作用。     

Vibration monitoring of rolling element bearings by the high-frequency resonance technique — a review

Vibration monitoring of rolling element bearings by the high-frequency resonance technique is reviewed. It is shown that the procedures for obtaining the spectrum of the envelope signal are well established, but that there is an incomplete understanding of the factors which control the appearance of this spectrum. Until the envelope spectrum can be fully explained, use of the technique is limited     

Vibration monitoring of bearings at low speeds

Some experimetnal observations and results are given comparing acceleration shock pulse transducer, acoustic emission and jerk measurements from slightly damaged bearings at medium to low speeds. Additional results showing defects at very low speeds with an acoustic emission transducer are not easily explained     

用Minitab进行测量系统分析

以滚动轴承制造现场使用的D0 12轴承检测仪的“GR&R”研究为例 ,介绍用Minitab进行测量系统分析的方法 ,并以分析数据为依据对测量仪器作相应的调整和改进