CN109458400A - 一种无保持架曲沟球轴承 - Google Patents

一种无保持架曲沟球轴承 Download PDF

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CN109458400A
CN109458400A CN201910024162.1A CN201910024162A CN109458400A CN 109458400 A CN109458400 A CN 109458400A CN 201910024162 A CN201910024162 A CN 201910024162A CN 109458400 A CN109458400 A CN 109458400A
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steel ball
inner ring
curved surface
outer ring
retainer
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CN109458400B (zh
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郭康权
胡耀华
张文静
谷芳
武明放
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Northwest A&F University
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Northwest A&F University
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Priority to US16/729,403 priority patent/US10895281B2/en
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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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • 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
    • F16C31/00—Bearings for parts which both rotate and move linearly
    • F16C31/04—Ball or roller bearings
    • 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
    • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers

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

Abstract

本发明涉及一种无保持架的曲沟球轴承，属于通用机械零件领域。针对曲沟球轴承存在的摆动频率高，振幅小，承载能力（滚动体数目）与摆动频率之间相互矛盾的问题，本发明公开一种无保持架曲沟球轴承。无保持架曲沟球轴承是在内圈和外圈同时设置“峰”和“谷”个数分别相等的曲面滚道，用钢球布满曲面滚道，取消固定钢球之间相对位置的保持架，使钢球在运动过程中能够随滚道的“峰”和“谷”的位置不同各自上下起伏摆动，这样就可以增大曲沟球轴承的振幅，减小摆动频率，同时提高承载能力。本发明公开的无保持架曲沟球轴承有以下优点：（1）可以将回转运动变为直线运动；（2）摆动幅度大，摆动频率小；（3）结构简单，承载能力强。

Description

一种无保持架曲沟球轴承
技术领域
本发明涉及一种球轴承，属于通用机械零件领域，具体来说涉及一种无保持架的曲沟球轴承。
背景技术
轴承是用来定位轴类零件，使其能够灵活转动，但不能产生轴向位移。但是对于需要在转动的同时，能够进行轴向位移的机构，通用轴承的使用将使得机构变得非常复杂。为了简化挤压揉搓辊的机械结构，也为了将回转运动用更简单的方法变成往复直线运动，公开号（CN103438104B）公开了一种曲沟球轴承，将原来轴承内外圈的直线沟槽变成形状完全对称的曲线沟槽，使轴转动的同时实现了往复直线运动，但配对安装要求严格；公开号（CN104454968A）公开了一种宽沟球轴承，简化了曲沟球轴承的配对要求；公开号（CN204704264U）公开了一种角接触曲沟球轴承，其成对安装实现往复运动，同时简化曲沟加工难度。上述曲沟球轴承都有一个共同的不足，就是摆动频率高，振幅小，承载能力（滚动体数目）与摆动频率之间相互矛盾。为了克服上述曲沟球轴承的不足，本发明公开一种无保持架曲沟球轴承，可以增大振幅，减小摆动频率，同时提高承载能力。
发明内容
实现上述发明的技术方案是：在内圈和外圈同时设置“峰”和“谷”个数分别相等的曲面滚道，用钢球布满曲面滚道，取消固定钢球之间相对位置的保持架，使钢球在运动过程中能够随滚道的“峰”和“谷”的位置不同各自上下起伏摆动，这样可以增加钢球的个数，减少“峰”和“谷”的数目，使安装该曲沟球轴承轴的轴及其作业部件在转动的同时，以较低的频率作往复直线运动，同时可以根据需求增大振幅。具体发明内容是：
一种无保持架曲沟球轴承,由一个外圈1、一组钢球2和一个内圈3构成，其特征是：所述的外圈1和内圈3同为一边壁厚厚、一边壁厚薄的曲面沟槽，且外圈1的曲面沟槽中心线沿轴承轴线方向摆动的“峰”和“谷”的个数与内圈3的“峰”和“谷”的个数分别相等；所述的外圈1和内圈3与钢球2接触部分的曲面形状以钢球2的球心连线为轴线对称且相似；所述的内圈3的曲面沟槽的薄壁边的厚度不超过钢球半径，厚壁边的厚度不超过钢球直径；所述的外圈1的薄壁边与曲面沟槽的圆弧相切，峰顶沿轴线方向的宽度大于内圈3在轴线方向的振幅与钢球2的直径之和；所述的外圈1的厚壁边的厚度不超过曲面沟槽镶入钢球以后钢球的半径，谷底沿轴线方向的宽度大于内圈3在轴线方向的振幅与钢球2的直径之和；
所述的外圈1和内圈3的曲面沟槽中心线的长度是钢珠直径的正整数倍；
所述的外圈1和内圈3的曲面沟槽中心线沿轴承轴线方向摆动的“峰”和“谷”的个数相等，且各等于或大于2个。
本发明公开的无保持架曲沟球轴承有以下优点：
（1）可以将回转运动变为直线运动；
（2）摆动幅度大，摆动频率小；
（3）结构简单，承载能力强。
附图说明
图1是内圈位移到左边，即在峰顶时的结构示意图；
图2是内圈位移到右边，即在谷底时的结构示意图；
图3是内圈与钢球位置关系示意图；
图4是外圈与钢珠关系示意图；
图5是内圈装配钢球以后的形状示意图；
图6是外圈装配钢球以后的形状示意图；
附图中各图例标记分别表示的意义如下：
1—外圈，2—钢球，3—内圈。
具体实施方式
下面结合附图给出具体的实施例。
本发明的一个实施例是将外圈1和内圈3做成都具有4个“峰”和“谷”的曲面沟槽，外圈1和内圈3的曲面各为振幅5毫米，24个钢珠正好布满内圈3的曲面沟槽，得到一个振幅10毫米，每转动一圈摆动4次的无保持架曲沟球轴承，该无保持架曲沟球轴承使用时需要成对安装，以实现其摆动和转动的功能。
同样，也可以将外圈1和内圈3做成都具有2个“峰”和“谷”的曲面沟槽，外圈1和内圈3的曲面各为振幅2.5毫米，得到一个振幅5毫米，每转动一圈摆动2次的无保持架曲沟球轴承。
这些原理相同，结构上的改变都可以构成本发明的其他实施方式。

Claims (3)

1.一种无保持架曲沟球轴承,由一个外圈（1）、一组钢球（2）和一个内圈（3）构成，其特征是：所述的外圈（1）和内圈（3）同为一边壁厚厚、一边壁厚薄的曲面沟槽，且外圈（1）的曲面沟槽中心线沿轴承轴线方向摆动的“峰”和“谷”的个数与内圈（3）的“峰”和“谷”的个数分别相等；所述的外圈（1）和内圈（3）与钢球（2）接触部分的曲面形状以钢球（2）的球心连线为轴线对称且相似；所述的内圈（3）的曲面沟槽的薄壁边的厚度不超过钢球半径，厚壁边的厚度不超过钢球直径；所述的外圈（1）的薄壁边与曲面沟槽的圆弧相切，峰顶沿轴线方向的宽度大于内圈（3）在轴线方向的振幅与钢球（2）的直径之和；所述的外圈（1）的厚壁边的厚度不超过曲面沟槽镶入钢球以后钢球的半径，谷底沿轴线方向的宽度大于内圈（3）在轴线方向的振幅与钢球（2）的直径之和。
2.根据权利要求书1所述的无保持架曲沟球轴承,其特征是：外圈（1）和内圈（3）的曲面沟槽中心线的长度是钢珠直径的正整数倍。
3.根据权利要求书1所述的无保持架曲沟球轴承,其特征是：所述的外圈（1）和内圈（3）的曲面沟槽中心线沿轴承轴线方向摆动的“峰”和“谷”的个数相等，且各等于或大于2个。
CN201910024162.1A 2019-01-10 2019-01-10 一种无保持架曲沟球轴承 Active CN109458400B (zh)

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US16/729,403 US10895281B2 (en) 2019-01-10 2019-12-29 Curved groove ball bearing without retainer

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109707509A (zh) * 2019-03-14 2019-05-03 西北农林科技大学 一种无曲柄连杆机构的往复活塞式内燃机
CN110017210A (zh) * 2019-05-29 2019-07-16 西北农林科技大学 一种内燃机
US11421764B2 (en) 2019-05-13 2022-08-23 Northwest A&F University Curved groove ball bearing mechanism

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DE10042648A1 (de) * 2000-08-30 2002-03-14 Schaeffler Waelzlager Ohg Lager für Längs-und Drehbewegungen
CN103438104A (zh) * 2013-09-11 2013-12-11 西北农林科技大学 一种曲沟球轴承
CN205744909U (zh) * 2016-06-22 2016-11-30 西北农林科技大学 一种窝眼曲沟球轴承

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104454968A (zh) 2014-11-14 2015-03-25 西北农林科技大学 一种宽沟球轴承
CN204704264U (zh) 2015-02-09 2015-10-14 西北农林科技大学 一种角接触曲沟球轴承

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10042648A1 (de) * 2000-08-30 2002-03-14 Schaeffler Waelzlager Ohg Lager für Längs-und Drehbewegungen
CN103438104A (zh) * 2013-09-11 2013-12-11 西北农林科技大学 一种曲沟球轴承
CN205744909U (zh) * 2016-06-22 2016-11-30 西北农林科技大学 一种窝眼曲沟球轴承

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109707509A (zh) * 2019-03-14 2019-05-03 西北农林科技大学 一种无曲柄连杆机构的往复活塞式内燃机
CN109707509B (zh) * 2019-03-14 2024-03-01 西北农林科技大学 一种无曲柄连杆机构的往复活塞式内燃机
US11421764B2 (en) 2019-05-13 2022-08-23 Northwest A&F University Curved groove ball bearing mechanism
CN110017210A (zh) * 2019-05-29 2019-07-16 西北农林科技大学 一种内燃机

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CN109458400B (zh) 2023-01-10
US10895281B2 (en) 2021-01-19

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