WO2021109581A1 - 滚珠保持架及角接触球轴承 - Google Patents

滚珠保持架及角接触球轴承 Download PDF

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Publication number
WO2021109581A1
WO2021109581A1 PCT/CN2020/102967 CN2020102967W WO2021109581A1 WO 2021109581 A1 WO2021109581 A1 WO 2021109581A1 CN 2020102967 W CN2020102967 W CN 2020102967W WO 2021109581 A1 WO2021109581 A1 WO 2021109581A1
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WIPO (PCT)
Prior art keywords
bearing
ball
balls
cage
outer ring
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PCT/CN2020/102967
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English (en)
French (fr)
Inventor
张书玉
赵鸿宝
杨海博
李明锐
王争民
刘星民
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山东博特轴承有限公司
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Publication of WO2021109581A1 publication Critical patent/WO2021109581A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3893—Ball cages with rolling elements with smaller diameter than the load carrying balls, e.g. cages with counter-rotating spacers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races

Definitions

  • the invention relates to the technical field of bearings, in particular to a bearing cage and an angular contact ball bearing.
  • the bearing cage and the ball rub against each other, which is a dynamic friction and wear part of the bearing that bears various complex stresses.
  • a steel wave-shaped bearing cage or a frame-type bearing cage is generally used ,
  • the contact area between the two cages and the steel ball is large, the wear is fast, and the life is short.
  • the large friction between the cage and the steel ball will cause the initial reaction force of the bearing to be large, and then the starting moment of the bearing
  • the angular contact bearing can bear radial load and axial load at the same time, and can work and contact at higher speeds.
  • the contact area between the cage and the steel ball in the prior art is large, which affects the contact between the steel ball and the slideway, limits the range of the contact angle, and makes the angular contact ball bearing anti-overturning moment Smaller, less capable of bearing axial load.
  • the purpose of the present invention is to provide a ball cage and angular contact ball bearing to solve the above-mentioned problems in the prior art, extend the service life of the bearing, reduce the starting moment of the bearing, and increase the anti-overturning moment of the angular contact ball bearing.
  • the present invention provides the following solutions:
  • the present invention provides a ball cage, including a plurality of frame bodies, each of the frame bodies is provided with ball pockets on both sides of the frame body, the surface of each of the ball pockets is used to contact the bearing balls, any one of the frame bodies The linear distance between any two points on the cross section is smaller than the diameter of the bearing ball, and a frame body is arranged between two adjacent bearing balls.
  • the cage is a lightweight nylon cage.
  • the ball pocket is a spherical groove, and the radius of the spherical groove of the spherical groove is the same as the radius of the bearing ball.
  • the present invention also provides an angular contact ball bearing, comprising a bearing inner ring, a bearing ball, a bearing outer ring and the ball cage described in any one of the above, and a ball is arranged between the bearing inner ring and the bearing outer ring Slide, each of the bearing balls can slide in the ball slide, the ball cage is arranged in the ball slide and used to separate the bearing balls and prevent the bearing balls from falling off, the bearing balls are There are multiple, and the number of the bearing balls is the same as the number of the frame body.
  • the upper part of the outer side wall of the inner ring of the bearing is provided with a first shoulder
  • the lower part of the inner side wall of the outer ring of the bearing is provided with a second shoulder.
  • the upper surface of the two retaining shoulders is provided with arc-shaped concave surfaces, and each of the arc-shaped concave surfaces is used to contact the bearing balls.
  • the first and second retaining shoulders can restrict the bearing inner ring and the bearing ball.
  • the first stop shoulder and the second stop shoulder can restrict the movement of the bearing ball along the axial direction of the bearing inner ring or the bearing outer ring.
  • the bearing inner ring, the bearing balls and the bearing outer ring are all bearing steel materials.
  • the contact angle of the bearing is 38.6°-41.4°.
  • the present invention provides a ball cage, which includes a plurality of frame bodies, and ball pockets are provided on both end faces of each frame body, and the surface of each ball pocket is used for contact with the bearing balls, and any two points on any cross section of the frame body
  • the linear distance between the two adjacent bearing balls is smaller than the diameter of the bearing balls.
  • the contact area between the split cage and the bearing balls is small and wear is slow, which prolongs the life of the bearing balls; split type
  • the cage is light in weight, reducing the weight of the bearing and the starting torque of the bearing.
  • the frame body is made of lightweight nylon material.
  • the lightweight nylon cage is not only light in weight, but also has good toughness and good wear resistance, so that the weight of the bearing can be reduced and the life of the bearing can be prolonged.
  • the ball pocket is a spherical groove.
  • the radius of the spherical groove is the same as the radius of the bearing ball. All surfaces of the spherical groove are in contact with the bearing balls, which can reduce the pressure on the cage and prolong the life of the cage.
  • the present invention also provides an angular contact ball bearing, including a bearing inner ring, a bearing ball, a bearing outer ring, and the ball cage described in any one of the above.
  • a ball slide is provided between the bearing inner ring and the bearing outer ring, each The bearing balls can slide in the ball slide.
  • the ball cage is arranged in the ball slide and used to separate the bearing balls and prevent the bearing balls from falling off. There are multiple bearing balls. The number of bearing balls and the frame is the same.
  • the split bearing cage is provided Between each bearing ball, the bearing cage does not affect the setting of the bearing inner ring and the bearing outer ring, that is, the optional range of the contact point position of the bearing ball and the bearing inner ring and the bearing outer ring is increased, which can increase the contact of the bearing Angle, so that the angular contact ball bearing can withstand larger axial load, increase the anti-overturning moment of the angular contact ball bearing.
  • the upper part of the outer side wall of the bearing inner ring is provided with a first shoulder
  • the lower part of the inner side wall of the bearing outer ring is provided with a second shoulder
  • the lower surface of the first shoulder and the upper surface of the second shoulder are both provided
  • the first shoulder and the second shoulder can limit the relative position of the inner ring of the bearing and the outer ring of the bearing.
  • the first shoulder and the second shoulder can Limit the movement of the bearing balls along the axial direction of the bearing inner ring or the bearing outer ring.
  • the bearing inner ring, the bearing ball and the bearing outer ring are all made of bearing steel material, which makes the bearing high in hardness and fatigue resistance, and can extend the service life of the bearing.
  • the contact angle of the bearing is 38.6°-41.4°, which makes the angular contact ball bearing suitable for positions subject to large axial loads.
  • Figure 1 is a schematic structural diagram of a ball cage provided by the first embodiment of the utility model
  • Fig. 2 is a schematic structural diagram of an angular contact ball bearing provided by the second embodiment of the utility model.
  • the purpose of the present invention is to provide a ball cage and angular contact ball bearing to solve the problems existing in the prior art, prolong the service life of the bearing, reduce the starting moment of the bearing, and increase the anti-overturning moment of the angular contact ball bearing.
  • the ball cage includes a plurality of frame bodies 1, and two end surfaces of each frame body 1 are provided with ball pockets 2, and each ball pocket 2 The surface of is used to contact the bearing ball 4.
  • the linear distance between any two points on any cross section of the frame body 1 is less than the diameter of the bearing ball 4.
  • a frame body 1 is provided between two adjacent bearing balls 4,
  • the split-type cage has a small contact area with the bearing ball 4 and is slow to wear, which prolongs the life of the bearing ball 4; the split-type cage is light in weight, reducing the weight of the bearing and the starting torque of the bearing.
  • the frame body 1 is made of a lightweight nylon material, which is not only light in weight, but also has good toughness and good wear resistance, so that the weight of the bearing can be reduced and the life of the bearing can be prolonged.
  • the ball pocket 2 is a spherical groove
  • the spherical radius of the spherical groove is the same as the radius of the bearing ball 4, and all the surfaces of the spherical groove are in contact with the bearing balls 4, which can reduce the pressure on the cage and extend the cage life.
  • the angular contact ball bearing includes a bearing inner ring 3, a bearing ball 4, a bearing outer ring 5, and the balls described in the first embodiment.
  • a ball slide is provided between the bearing inner ring 3 and the bearing outer ring 5.
  • Each bearing ball 4 can slide in the ball slide.
  • the ball cage is arranged in the ball slide and used to separate the bearing balls 4 and prevent the bearing balls 4 Falling off, there are multiple bearing balls 4, the number of bearing balls 4 is the same as the frame body 1, and the split bearing cage is arranged between the bearing balls 4, so that the bearing cage does not affect the bearing inner ring 3 and the bearing outer ring 5
  • the setting that is, the optional range of the position of the contact point of the bearing ball 4 with the bearing inner ring 3 and the bearing outer ring 5 is increased, which can increase the contact angle of the bearing, so that the angular contact ball bearing can withstand larger axial loads and increase
  • the anti-overturning moment of the angular contact ball bearing is calculated.
  • the upper part of the outer side wall of the bearing inner ring 3 is provided with a first shoulder 6, the lower part of the inner side wall of the bearing outer ring 5 is provided with a second shoulder 7, the lower surface of the first shoulder 6 and the second shoulder
  • the upper surface of 7 is provided with arc-shaped concave surfaces, each arc-shaped concave surface is used to contact the bearing ball 4, the first shoulder 6 and the second shoulder 7 can limit the relative position of the inner ring 3 and the outer ring 5 of the bearing , The first shoulder 6 and the second shoulder 7 can restrict the axial movement of the bearing ball 4 along the bearing inner ring 3 or the bearing outer ring 5.
  • bearing inner ring 3, the bearing balls 4, and the bearing outer ring 5 are all bearing steel materials, which makes the bearing high in hardness and fatigue resistance, and can prolong the service life of the bearing.
  • the contact angle of the bearing is 38.6°-41.4°, which makes the angular contact ball bearing suitable for positions subject to large axial loads.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

一种滚珠保持架及角接触球轴承，滚珠保持架包括多个架体（1），各架体（1）的两侧端面设有球兜（2），各球兜（2）的表面用于与轴承滚珠（4）接触，架体（1）的任意一个横截面上任意两点之间的直线距离小于轴承滚珠（4）的直径，两相邻的轴承滚珠（4）之间设有一个架体（1），延长了轴承滚珠（4）的寿命，减小了轴承的重量和轴承的起动力矩；角接触球轴承包括轴承内圈（3）、轴承滚珠（4）、轴承外圈（5）和上述的滚珠保持架，轴承内圈（3）与轴承外圈（5）之间设有滚珠滑道，滚珠保持架用于隔开轴承滚珠（4）以及防止轴承滚珠（4）脱落，轴承滚珠（4）为多个，轴承滚珠（4）与架体（1）数量相同，各轴承滚珠（4）能够在滚珠滑道内滑动，滚珠保持架不影响轴承内圈（3）和轴承外圈（5）的设置，可以增大轴承的接触角。

Description

滚珠保持架及角接触球轴承 技术领域
本发明涉及轴承技术领域，特别是涉及一种轴承保持架及角接触球轴承。
背景技术
轴承在工作时，轴承保持架与滚珠之间相互摩擦，是轴承中承受各种复杂应力的动态摩擦磨损零件，现有技术中，一般采用钢制的波浪形轴承保持架或框架型轴承保持架，这两种保持架与钢珠之间的接触面积大、磨损快、寿命短，而且，保持架与钢珠之间的摩擦力大，就会使得轴承起始的反作用力大，进而轴承的起动力矩就要大，保持架质量较大，也使得轴承的起动力矩较大、能耗较高，此外，角接触轴承可同时承受径向负荷和轴向负荷，能在较高的转速下工作且接触角越大，轴向承载能力越高，现有技术中的保持架与钢珠的接触面积大，影响了钢珠与滑道的接触，限制了接触角的范围，使得角接触球轴承的抗倾覆力矩较小，承受轴向载荷的能力较小。
发明内容
本发明的目的是提供一种滚珠保持架及角接触球轴承，以解决上述现有技术存在的问题，延长轴承的使用寿命，减小轴承的起动力矩，增加角接触球轴承的抗倾覆力矩。
为实现上述目的，本发明提供了如下方案：
本发明提供一种滚珠保持架，包括多个架体，各所述架体的两侧端面设有球兜，各所述球兜的表面用于与轴承滚珠接触，所述架体的任意一个横截面上任意两点之间的直线距离小于所述轴承滚珠的直径，两相邻的轴承滚珠之间设有一个所述架体。
优选的，所述保持架为轻质尼龙保持架。
优选的，所述球兜为球面凹槽，所述球面凹槽的球面半径与轴承滚珠的半径相同。
本发明还提供一种角接触球轴承，包括轴承内圈、轴承滚珠、轴承外圈和上述任意一项所述的滚珠保持架，所述轴承内圈与所述轴承外圈之间设有滚珠滑道，各所述轴承滚珠能够在所述滚珠滑道内滑动，所述滚珠保持架设置于所述滚珠滑道内并用于隔开所述轴承滚珠以及防止所述轴承滚珠脱落，所述轴承滚珠为多个，所述轴承滚珠与所述架体数量相同。
优选的，所述轴承内圈的外侧壁的上部设有第一挡肩，所述轴承外圈的内侧壁的下部设有第二挡肩，所述第一挡肩的下表面和所述第二挡肩的上表面均设有弧形凹面，各所述弧形凹面用于与所述轴承滚珠接触，所述第一挡肩和所述第二挡肩能够限制所述轴承内圈与所述轴承外圈的相对位置，所述第一挡肩与所述第二挡肩能够限制所述轴承滚珠沿所述轴承内圈或所述轴承外圈的轴向的运动。
优选的，所述轴承内圈、所述轴承滚珠和所述轴承外圈均为轴承钢材料。
优选的，轴承接触角为38.6°～41.4°。
本发明相对于现有技术取得了以下技术效果：
本发明提供一种滚珠保持架，包括多个架体，各架体的两侧端面设有球兜，各球兜的表面用于与轴承滚珠接触，架体的任意一个横截面上任意两点之间的直线距离小于轴承滚珠的直径，两相邻的轴承滚珠之间设有一个架体，分体式的保持架与轴承滚珠的接触面积小、磨损慢，延长了轴承滚珠的寿命；分体式的保持架重量轻，减小了轴承的重量和轴承的起动力矩。
进一步的，架体为轻质尼龙材料，轻质尼龙保持架不仅质量轻而且韧性好、耐磨性好，使得可以减小轴承的重量，延长轴承的寿命。
进一步的，球兜为球面凹槽，球面凹槽的球面半径与轴承滚珠的半径相同，球面凹槽的表面全部与轴承滚珠接触，可以减小保持架所受压强，延长保持架的寿命。
本发明还提供一种角接触球轴承，包括轴承内圈、轴承滚珠、轴承 外圈和上述任意一项所述的滚珠保持架，轴承内圈与轴承外圈之间设有滚珠滑道，各轴承滚珠能够在滚珠滑道内滑动，滚珠保持架设置于滚珠滑道内并用于隔开轴承滚珠以及防止轴承滚珠脱落，轴承滚珠为多个，轴承滚珠与架体数量相同，分体式的轴承保持架设置在各轴承滚珠之间，使得轴承保持架不影响轴承内圈和轴承外圈的设置，即轴承滚珠与轴承内圈和轴承外圈的接触点位置的可选范围增加，可以增大轴承的接触角，使得角接触球轴承可以承受较大的轴向载荷，增加了角接触球轴承的抗倾覆力矩。
进一步的，轴承内圈的外侧壁的上部设有第一挡肩，轴承外圈的内侧壁的下部设有第二挡肩，第一挡肩的下表面和第二挡肩的上表面均设有弧形凹面，各弧形凹面用于与轴承滚珠接触，第一挡肩和第二挡肩能够限制所述轴承内圈与轴承外圈的相对位置，第一挡肩与第二挡肩能够限制轴承滚珠沿轴承内圈或轴承外圈的轴向的运动。
进一步的，轴承内圈、轴承滚珠和轴承外圈均为轴承钢材料，使得轴承的硬度高、耐疲劳，可以延长轴承的使用寿命。
进一步的，轴承接触角为38.6°～41.4°，使得角接触球轴承适用于所受轴向负荷较大的位置。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实用新型实施例一提供的滚珠保持架的结构示意图；
图2为本实用新型实施例二提供的角接触球轴承的结构示意图。
图中：1-架体；2-球兜；3-轴承内圈；4-轴承滚珠；5-轴承外圈；6-第一挡肩；7-第二挡肩。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案 进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的目的是提供一种滚珠保持架及角接触球轴承，以解决现有技术存在的问题，延长轴承的使用寿命，减小轴承的起动力矩，增加角接触球轴承的抗倾覆力矩。
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。
实施例一
本实施例提供一种滚珠保持架，如图1所示，于本实施例中，滚珠保持架包括多个架体1，各架体1的两侧端面设有球兜2，各球兜2的表面用于与轴承滚珠4接触，架体1的任意一个横截面上任意两点之间的直线距离小于轴承滚珠4的直径，两相邻的轴承滚珠4之间设有一个架体1，分体式的保持架与轴承滚珠4的接触面积小、磨损慢，延长了轴承滚珠4的寿命；分体式的保持架重量轻，减小了轴承的重量和轴承的起动力矩。
进一步的，架体1为轻质尼龙材料，轻质尼龙材料不仅质量轻而且韧性好、耐磨性好，使得可以减小轴承的重量，延长轴承的寿命。
进一步的，球兜2为球面凹槽，球面凹槽的球面半径与轴承滚珠4的半径相同，球面凹槽的表面全部与轴承滚珠4接触，可以减小保持架所受压强，延长保持架的寿命。
实施例二
本实施例提供一种角接触球轴承，如图2所示，于本实施例中，角接触球轴承包括轴承内圈3、轴承滚珠4、轴承外圈5和实施例一中所述的滚珠保持架，轴承内圈3与轴承外圈5之间设有滚珠滑道，各轴承滚珠4能够在滚珠滑道内滑动，滚珠保持架设置于滚珠滑道内并用于隔开轴承滚珠4以及防止轴承滚珠4脱落，轴承滚珠4为多个，轴承滚珠4 与架体1数量相同，分体式的轴承保持架设置在各轴承滚珠4之间，使得轴承保持架不影响轴承内圈3和轴承外圈5的设置，即轴承滚珠4与轴承内圈3和轴承外圈5的接触点位置的可选范围增加，可以增大轴承的接触角，使得角接触球轴承可以承受较大的轴向载荷，增加了角接触球轴承的抗倾覆力矩。
进一步的，轴承内圈3的外侧壁的上部设有第一挡肩6，轴承外圈5的内侧壁的下部设有第二挡肩7，第一挡肩6的下表面和第二挡肩7的上表面均设有弧形凹面，各弧形凹面用于与轴承滚珠4接触，第一挡肩6和第二挡肩7能够限制所述轴承内圈3与轴承外圈5的相对位置，第一挡肩6与第二挡肩7能够限制轴承滚珠4沿轴承内圈3或轴承外圈5的轴向的运动。
进一步的，轴承内圈3、轴承滚珠4和轴承外圈5均为轴承钢材料，使得轴承的硬度高、耐疲劳，可以延长轴承的使用寿命。
进一步的，轴承接触角为38.6°～41.4°，使得角接触球轴承适用于所受轴向负荷较大的位置。
本发明中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。

Claims (7)

  1. 一种滚珠保持架，其特征在于：包括多个架体，各所述架体的两侧端面设有球兜，各所述球兜的表面用于与轴承滚珠接触，所述架体的任意一个横截面上任意两点之间的直线距离小于所述轴承滚珠的直径，两相邻的轴承滚珠之间设有一个所述架体。
  2. 根据权利要求1所述的滚珠保持架，其特征在于：所述保持架为轻质尼龙保持架。
  3. 根据权利要求1所述的滚珠保持架，其特征在于：所述球兜为球面凹槽，所述球面凹槽的球面半径与轴承滚珠的半径相同。
  4. 一种角接触球轴承，其特征在于：包括轴承内圈、轴承滚珠、轴承外圈和权利要求1～3任意一项所述的滚珠保持架，所述轴承内圈与所述轴承外圈之间设有滚珠滑道，各所述轴承滚珠能够在所述滚珠滑道内滑动，所述滚珠保持架设置于所述滚珠滑道内并用于隔开所述轴承滚珠以及防止所述轴承滚珠脱落，所述轴承滚珠为多个，所述轴承滚珠与所述架体数量相同。
  5. 根据权利要求4所述的角接触球轴承，其特征在于：所述轴承内圈的外侧壁的上部设有第一挡肩，所述轴承外圈的内侧壁的下部设有第二挡肩，所述第一挡肩的下表面和所述第二挡肩的上表面均设有弧形凹面，各所述弧形凹面用于与所述轴承滚珠接触，所述第一挡肩和所述第二挡肩能够限制所述轴承内圈与所述轴承外圈的相对位置，所述第一挡肩与所述第二挡肩能够限制所述轴承滚珠沿所述轴承内圈或所述轴承外圈的轴向的运动。
  6. 根据权利要求4所述的角接触球轴承，其特征在于：所述轴承内圈、所述轴承滚珠和所述轴承外圈均为轴承钢材料。
  7. 根据权利要求4所述的角接触球轴承，其特征在于：轴承接触角为38.6°～41.4°。
PCT/CN2020/102967 2019-12-06 2020-07-20 滚珠保持架及角接触球轴承 WO2021109581A1 (zh)

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