CN106224373A - 一种非标深沟球轴承 - Google Patents

一种非标深沟球轴承 Download PDF

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CN106224373A
CN106224373A CN201610770235.8A CN201610770235A CN106224373A CN 106224373 A CN106224373 A CN 106224373A CN 201610770235 A CN201610770235 A CN 201610770235A CN 106224373 A CN106224373 A CN 106224373A
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inner ring
outer ring
deep groove
ball bearing
groove ball
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CN106224373B (zh
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陈江
童川
刘遵化
蒋洪波
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Co Ltd Is Held By Chongqing City Newly Super Mechanical Axis
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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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/32—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
    • F16C33/38—Ball 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
    • F16C33/58—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
    • 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
    • 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
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C2220/00—Shaping

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

Abstract

本发明公开一种非标深沟球轴承，包括相互配合的外圈、内圈、钢珠和保持架，所述外圈的外径为35mm，所述内圈的内径为15mm，所述外圈和内圈的宽度均为11mm，其关键在于：所述钢珠直径为6.747mm，所述钢珠为七粒，七粒所述钢珠通过所述保持架的限定，环向均匀分布在所述外圈和内圈之间。该案的有益效果是，在不改变现有摩托车(发动机主轴及对应的安装壳体)任何技术参数的情况下，对现有6202标准轴承进行调整，得到一种非标深沟球轴承，使其能够承受的径向荷载大幅提高，使用寿命提高，应用范围更广，大排量(0.25L‑1L)摩托车的行驶里程不受影响。

Description

一种非标深沟球轴承
技术领域
本发明涉及轴承，具体涉及一种非标深沟球轴承。
背景技术
摩托车发动机主轴一端安装有6202标准轴承，用于支撑主轴旋转，并承受相应的径向轴向联合载荷力矩，轴向力矩主要为离合器所产生主要轴向力，同时不排除曲轴一端齿轮与主轴齿轮、主轴齿轮与副轴齿轮三者相对旋转打滑所产生轴向载荷；6202标准轴承的转速为与曲轴同步，为3000～5000r/min。
随着摩托车行业的发展，各大主机厂均研发了较多大排量发动机。但随着发动机排量的增大，发动机输出的最大扭矩不断提高，6202标准轴承的承受的轴向、径向荷载增大，致使原有的6202标准轴承无法满足大排量发动机的使用条件，从而导致钢球异常磨损；保持架断裂；内圈沟道、钢球点蚀或疲劳剥落，内圈沟道翻边等轴承提前失效的问题。
发明内容
为解决以上技术问题，本发明提供一种非标深沟球轴承。
技术方案如下：
一种非标深沟球轴承，包括相互配合的外圈、内圈、钢珠和保持架，所述外圈的外径为35mm，所述内圈的内径为15mm，所述外圈和内圈的宽度均为11mm，其关键在于：所述钢珠直径为6.747mm，所述钢珠为七粒，七粒所述钢珠通过所述保持架的限定，环向均匀分布在所述外圈和内圈之间。
上述外圈的沟道曲率半径Re＝3.47+0.03mm，所述内圈的沟道曲率半径Ri＝3.54+ 0.03mm。
上述内圈外径为21.70-0.021mm，挡边系数为0.378。
上述外圈和内圈之间的径向游隙为13-20um，轴向游隙为90-125um。
上述保持架的串动量为0.35-0.45mm。
上述外圈和内圈经过淬火和回火工艺处理；
所述淬火工艺的温度为810-860℃，时间为60±5min；
所述回火工艺的温度为170-190℃，时间为230-250min。
上述保持架经过表面渗氮处理，渗氮处理后所述保持架表面的白亮层厚度为4-11um。
附图说明
图1为本发明的结构示意图。
具体实施方式
一、下面结合实施例和附图对本发明作进一步说明。
如图1所示，一种非标深沟球轴承，包括相互配合的外圈1、内圈2、钢珠3和保持架4，所述外圈1和内圈2同轴线设置，所述外圈1内圆面设有内沟道，所述内圈2外圆面设有外沟道，所述钢珠3位于所述外圈1和内圈2之间，沿所述内沟道和外沟道滚动，所述钢珠3通过保持架4限定；
所述外圈1的外径为35mm，所述内圈的内径为15mm，所述外圈1和内圈2的宽度均为11mm，所述钢珠3直径为6.747mm，所述钢珠3为七粒，七粒所述钢珠3通过所述保持架4的限定，环向均匀分布在所述外圈1和内圈2之间。
所述外圈1的沟道曲率半径Re＝3.47+0.03mm，所述内圈2的沟道曲率半径Ri＝3.54+0.03mm。
所述内圈2外径为21.70-0.021mm，挡边系数为0.378。
所述外圈1和内圈2之间的径向游隙为13-20um，轴向游隙为90-125um。
所述保持架4的串动量为0.35-0.45mm。
所述外圈1和内圈2经过淬火和回火工艺处理；
所述淬火工艺的具体过程为：将外圈1和内圈2置于淬火炉中，在5min内升温至830-860℃，保持45min；再降温至810-840℃，保持10min，取出后急速降温至100-120℃，最后冷却至5-10℃；15min后进行回火处理；
所述回火工艺的具体过程为：将外圈1和内圈2升温至170-190℃，保持230-250min，取出后自然冷却。
所述保持架4经过表面渗氮处理，渗氮处理后所述保持架4表面的白亮层厚度为4-11um。
二、轴承疲劳寿命试验
6202标准轴承的外径为35mm，内径为15mm，宽度为11mm，在内、外圈之间设有8粒直径为5.953mm的钢珠，8粒钢珠通过保持架环向均匀限定在内、外圈之间；外圈的沟道曲率半径Re＝3.06+0.03mm，内圈的沟道曲率半径Ri＝3.06+0.03mm；内圈外径为21.3-0.021mm，内圈挡边系数为0.294；外圈和内圈之间的径向游隙为11-18um，轴向游隙为75-110um；保持架的串动量为0.25-0.45mm。
随机选取100个6202标准轴承，和100个上述实施例提供的一种非标深沟球轴承，在相同条件下进行轴承疲劳寿命试验，变量为径向荷载，分别为7KN、8.5KN、10KN、12KN的径向荷载，测定各轴承寿命L10，轴承寿命L10指在固定荷载条件下，在疲劳剥落发生前，轴承能达到的转数，取平均数L，结果见表1：
表1、6202标准轴承、一种非标深沟球轴承的寿命
从表1可以看出，以上实施例提供的一种非标深沟球轴承相对于6202标准轴承的寿命大大提高，在径向施加12KN荷载的情况下，以上实施例提供的一种非标深沟球轴承的寿命仍能达到9.98*105转(约100万转)；而现有的6202标准轴承随径向荷载的增大，寿命大幅缩短，其能承受的径向动载荷远远小于以上实施例提供的一种非标深沟球轴承所能能承受的径向动载荷。
三、实际使用情况数据统计
分别以多个0.25L、0.5L、0.75L和1L排量的摩托车(输出的最大扭矩依次增大)作为试验载体，分别安装6202标准轴承和以上实施例提供的一种非标深沟球轴承，在各同路况条件下行驶。当出现钢球异常磨损；保持架断裂；内圈沟道、钢球点蚀或疲劳剥落；内圈沟道翻边等任一项轴承失效的问题时截止，统计行驶里程，取平均值S，结果如表2所示：
表2、行驶里程统计
从表2可以看出，以上一种非标深沟球轴承安装在排量为0.75L及以下的摩托车上时，仍能保持长距离(时间)正常行驶，不会出现钢球异常磨损；保持架断裂；内圈沟道、钢球点蚀或疲劳剥落；内圈沟道翻边等轴承失效的问题，而现有的6202标准轴承随摩托车气缸排量增大，能保持的行驶里程(时间)大幅缩短。
结合以上试验可知，采用本发明的有益效果是：在不改变现有摩托车(发动机主轴及对应的安装壳体)任何技术参数的情况下，对现有6202标准轴承进行调整，得到一种非标深沟球轴承，使其能够承受的径向动载荷大幅提高，使用寿命提高，应用范围更广，大排量(0.25L-1L)摩托车的行驶里程不受影响。
最后需要说明的是，上述描述仅仅为本发明的优选实施例，本领域的普通技术人员在本发明的启示下，在不违背本发明宗旨及权利要求的前提下，可以做出多种类似的表示，这样的变换均落入本发明的保护范围之内。

Claims (7)

1.一种非标深沟球轴承，包括相互配合的外圈(1)、内圈(2)、钢珠(3)和保持架(4)，所述外圈(1)的外径为35mm，所述内圈的内径为15mm，所述外圈(1)和内圈(2)的宽度均为11mm，其特征在于：所述钢珠(3)直径为6.747mm，所述钢珠(3)为七粒，七粒所述钢珠(3)通过所述保持架(4)的限定，环向均匀分布在所述外圈(1)和内圈(2)之间。
2.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述外圈(1)的沟道曲率半径Re＝3.47+0.03mm，所述内圈(2)的沟道曲率半径Ri＝3.54+0.03mm。
3.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述内圈(2)外径为21.70-0.021mm，挡边系数为0.378。
4.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述外圈(1)和内圈(2)之间的径向游隙为13-20um，轴向游隙为90-125um。
5.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述保持架(4)的串动量为0.35-0.45mm。
6.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述外圈(1)和内圈(2)经过淬火和回火工艺处理；
所述淬火工艺的温度为810-860℃，时间为60±5min；
所述回火工艺的温度为170-190℃，时间为230-250min。
7.根据权利要求1所述的一种非标深沟球轴承，其特征在于：所述保持架(4)经过表面渗氮处理，渗氮处理后所述保持架(4)表面的白亮层厚度为4-11um。
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Cited By (2)

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CN109707731A (zh) * 2019-01-14 2019-05-03 嘉兴雷特精密轴承有限公司 一种用于摩托赛车曲轴箱的高速轴承及其淬火工艺
CN111919040A (zh) * 2018-03-28 2020-11-10 Ntn株式会社 锥形滚柱轴承

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Publication number Priority date Publication date Assignee Title
CN111919040A (zh) * 2018-03-28 2020-11-10 Ntn株式会社 锥形滚柱轴承
US11293484B2 (en) 2018-03-28 2022-04-05 Ntn Corporation Tapered roller bearing
CN111919040B (zh) * 2018-03-28 2022-09-13 Ntn株式会社 锥形滚柱轴承
CN109707731A (zh) * 2019-01-14 2019-05-03 嘉兴雷特精密轴承有限公司 一种用于摩托赛车曲轴箱的高速轴承及其淬火工艺

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