公开(公告)号：US20010028753A1

公开(公告)日：2001-10-11

申请号：US09842713

申请日：2001-04-27

Applicant: NSK Ltd.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C033/60

CPC classification number: G11B19/2009 ,  F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  Y10T29/49636 ,  Y10T29/497 ,  Y10T29/49863

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。

公开(公告)号：US20040213493A1

公开(公告)日：2004-10-28

申请号：US10757579

申请日：2004-01-15

Applicant: NSK LTD.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C019/00

CPC classification number: F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C33/60 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  G11B19/2009

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。

公开(公告)号：US20020118901A1

公开(公告)日：2002-08-29

申请号：US10080152

申请日：2002-02-22

Applicant: NSK LTD.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C033/60

CPC classification number: F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C33/60 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  G11B19/2009

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。