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11 条记录 (耗时 0.023 秒)

    Method and Apparatus for Measuring Apparent Viscosity of a Non-Newtonian Fluid
    2.
    发明申请
    Method and Apparatus for Measuring Apparent Viscosity of a Non-Newtonian Fluid 审中-公开
    用于测量非牛顿流体表观粘度的方法和装置

    公开(公告)号：US20130253855A1

    公开(公告)日：2013-09-26

    申请号：US13427655

    申请日：2012-03-22

    申请人： Canlong He ,  Paul G. Conley ,  Pieter Martin Lugt

    发明人： Canlong He ,  Paul G. Conley ,  Pieter Martin Lugt

    IPC分类号： G06F19/00

    CPC分类号： G01N11/08 ,  G01N2011/0033

    摘要： Method and apparatus are disclosed for measuring an apparent viscosity of a non-Newtonian fluid. The method and apparatus involves calculating a power-law number n relating a shear stress of the fluid to a shear rate of the fluid, and then calculating an estimated apparent viscosity ηest of the fluid at a selected shear rate based on a yield stress Y of the fluid and on the calculated power-law number n. The estimated apparent viscosity of the fluid at a selected shear rate is calculated based on the experimental observation that reference shear stress is 1.5 times the yield stress for most shear thinning fluids (e.g., grease).

    摘要翻译： 公开了用于测量非牛顿流体的表观粘度的方法和装置。 该方法和装置包括计算关于流体的剪切应力与流体的剪切速率相关联的幂律数n，然后基于屈服应力Y在选定的剪切速率下计算流体的估计表观粘度等级 流体和计算的幂律数n。 基于参考剪切应力为大多数剪切稀化流体（例如油脂）的屈服应力的1.5倍的实验观察，计算出在选定的剪切速率下的流体的估计表观粘度。

    Prediction of relubrication interval
    4.
    发明授权
    Prediction of relubrication interval 有权
    再润滑间隔预测

    公开(公告)号：US08718991B2

    公开(公告)日：2014-05-06

    申请号：US12992817

    申请日：2008-05-14

    申请人： Pieter Martin Lugt

    发明人： Pieter Martin Lugt

    IPC分类号： G06G7/48 ,  G06F17/50

    CPC分类号： G06F17/5018 ,  G01M13/04 ,  G01M13/045

    摘要： The invention relates to a method of predicting when a grease in a grease-lubricated rolling element bearing (10) will reach an unacceptable condition. According to the invention, a time series of a parameter is measured and recorded, whereby the parameter is directly or indirectly indicative of a degree of breakdown of a lubricant film separating the rolling contacts. With the aid of processing means (22), the time series is analyzed, a dynamic model is constructed that predicts the evolution of parameter values, and the model is used to extrapolate the time series. A time at which a predefined limit will be exceeded is then determined from the extrapolated time series, whereby the predefined limit is representative of unacceptable grease condition. The method according to the invention can be used to predict a relubrication interval for an individual grease-lubricated bearing.

    摘要翻译： 本发明涉及一种预测润滑脂润滑的滚动体轴承（10）中的润滑脂何时将达到不可接受的状态的方法。 根据本发明，测量和记录参数的时间序列，由此参数直接或间接地指示分离滚动接触件的润滑剂膜的击穿程度。 在处理手段（22）的帮助下，分析了时间序列，构建了一个预测参数值演化的动态模型，并用模型推断时间序列。 然后从外推时间序列确定将超过预定极限的时间，由此预定义的极限代表不可接受的润滑脂状况。 根据本发明的方法可以用于预测单个油脂润滑轴承的再润滑间隔。

    Bearing with Reduced Reflow
    5.
    发明申请
    Bearing with Reduced Reflow 审中-公开
    轴承减少回流

    公开(公告)号：US20080050059A1

    公开(公告)日：2008-02-28

    申请号：US10572207

    申请日：2004-09-20

    申请人： Pieter Martin Lugt ,  John Howard Tripp

    发明人： Pieter Martin Lugt ,  John Howard Tripp

    IPC分类号： F16C33/66

    CPC分类号： F16C33/6651 ,  F16C19/22 ,  F16C33/363 ,  F16C33/585 ,  F16C33/6614 ,  F16C33/6629 ,  F16C33/6681 ,  F16C2300/02

    摘要： A method for lubricating the rolling contacts in a rolling element bearing having at least two rings which are each provided with raceways, as well as a at least one series of rolling elements which are in contact with the raceways, comprises the steps of providing the raceway surface of at least one of the rings and rolling elements with a pattern which has a dominant oblique characteristic in relation to the axis of the bearing, providing a lubricant on the raceway surface, and making the rolling elements overroll over the patterned raceway surface over at least the full circumference of the raceway so as to displace the lubricant in the axial direction under the influence of the engagement of the rolling elements with the pattern.

    摘要翻译： 一种用于在具有至少两个环的滚动元件轴承中润滑滚动触头的方法，每个环设置有滚道，以及与滚道接触的至少一系列滚动元件，包括提供滚道的步骤 至少一个环和滚动元件的表面具有相对于轴承的轴线具有主要倾斜特性的图案，在滚道表面上提供润滑剂，并且使滚动元件在图案化的滚道表面上滚动超过在 至少是滚道的整个圆周，以便在滚动元件与图案的啮合的影响下使润滑剂沿轴向移动。

    Prediction of Relubrication Interval
    6.
    发明申请
    Prediction of Relubrication Interval 有权
    预测时间间隔

    公开(公告)号：US20110125475A1

    公开(公告)日：2011-05-26

    申请号：US12992817

    申请日：2008-05-14

    申请人： Pieter Martin Lugt

    发明人： Pieter Martin Lugt

    IPC分类号： G06G7/48

    CPC分类号： G06F17/5018 ,  G01M13/04 ,  G01M13/045

    摘要： The invention relates to a method of predicting when a grease in a grease-lubricated rolling element bearing (10) will reach an unacceptable condition. According to the invention, a time series of a parameter is measured and recorded, whereby the parameter is directly or indirectly indicative of a degree of breakdown of a lubricant film separating the rolling contacts. With the aid of processing means (22), the time series is analyzed, a dynamic model is constructed that predicts the evolution of parameter values, and the model is used to extrapolate the time series. A time at which a predefined limit will be exceeded is then determined from the extrapolated time series, whereby the predefined limit is representative of unacceptable grease condition. The method according to the invention can be used to predict a relubrication interval for an individual grease-lubricated bearing.

    摘要翻译： 本发明涉及一种预测润滑脂润滑的滚动元件轴承（10）中的润滑脂何时将达到不可接受的状态的方法。 根据本发明，测量和记录参数的时间序列，由此参数直接或间接地指示分离滚动接触件的润滑剂膜的击穿程度。 在处理手段（22）的帮助下，分析了时间序列，构建了一个预测参数值演化的动态模型，并用模型推断时间序列。 然后从外推时间序列确定将超过预定极限的时间，由此预定义的极限代表不可接受的润滑脂状况。 根据本发明的方法可以用于预测单个油脂润滑轴承的再润滑间隔。

    Method for treating the surface of a machine element
    7.
    发明授权
    Method for treating the surface of a machine element 有权
    用于处理机械元件表面的方法

    公开(公告)号：US07389666B2

    公开(公告)日：2008-06-24

    申请号：US10555776

    申请日：2004-05-05

    申请人： Pieter Martin Lugt

    发明人： Pieter Martin Lugt

    IPC分类号： B21D19/04

    CPC分类号： F16C33/32 ,  B23P9/02 ,  B24B39/00 ,  C21D7/08 ,  C21D2261/00 ,  F16C19/163 ,  F16C33/64 ,  F16C2240/18 ,  Y10T29/47

    摘要： A method for treating the surface of a machine element, such as the raceway and/or a rolling element of a rolling element bearing, comprising the steps of—subjecting the surface to a hard turning operation so as to obtain a specific roughness profile having a series of alternating ridges and grooves, —after the hard turning operation subjecting the surface to a ball calendering operation so as to flatten the ridges of the roughness profile whereby a Δq value smaller than 5° is obtained.

    摘要翻译： 一种用于处理诸如滚道和/或滚动元件轴承的滚动元件的机器元件的表面的方法，包括以下步骤：对所述表面进行硬切削操作，以获得具有 一系列交替的脊和槽，在硬表面进行滚压操作之后，使粗糙度轮廓的脊平坦化，从而获得小于5°的Δq值。

    Rolling element bearing for ultra-low viscosity fluids
    9.
    发明授权
    Rolling element bearing for ultra-low viscosity fluids 有权
    滚动轴承用于超低粘度流体

    公开(公告)号：US07090404B2

    公开(公告)日：2006-08-15

    申请号：US10479237

    申请日：2002-05-31

    申请人： Espejel Guillermo Morales ,  Antonio Gabelli ,  Pieter Martin Lugt

    发明人： Espejel Guillermo Morales ,  Antonio Gabelli ,  Pieter Martin Lugt

    IPC分类号： F16C19/00

    CPC分类号： F16C33/6648 ,  F16C33/30 ,  F16C33/6651 ,  F16C33/6659

    摘要： A rolling element having comprises an inner ring, an outer ring and a series of rolling elements which are in contact with the raceways of the rings, an ultra-low viscosity fluid being present in the contacts having a kinematic viscosity ν=(ηo/ρ) of less than 2 mm2/s, wherein the surfaces of the rings and the rolling elements have asperities which can have solid-to-solid contact during operation of the bearing. A factor Dq is defined which is equal to (I) whereby the solid-to-solid contact of the asperities is reduced by selecting such design parameters and operating conditions of the bearing that Dq is in the range from 8.0×10−6 mrad s1/2 to 1.36×10−4 mrad s1/2.

    摘要翻译： 一种滚动元件，其具有内环，外圈和与环的滚道接触的一系列滚动元件，触点中存在的超低粘度流体具有运动粘度nu =（eta Q 在8.0×10 -6 mrad s 1/2以上至1.36×10 -3的范围内， SUP> -4 mrad s 1/2。