CN113175478A - 一种凹球面圆柱滚子轴承 - Google Patents

一种凹球面圆柱滚子轴承 Download PDF

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CN113175478A
CN113175478A CN202110318100.9A CN202110318100A CN113175478A CN 113175478 A CN113175478 A CN 113175478A CN 202110318100 A CN202110318100 A CN 202110318100A CN 113175478 A CN113175478 A CN 113175478A
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roller
diameter
raceway
retainer
cylindrical
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燕敬祥
张士玉
燕修磊
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Shandong Cooper Bearing Technology Service Co ltd
Shandong Xiuhan Inspection And Testing Co ltd
Shandong Camery Kmr Bearing Science & Technology Co ltd
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Shandong Cooper Bearing Technology Service Co ltd
Shandong Xiuhan Inspection And Testing Co ltd
Shandong Camery Kmr Bearing Science & Technology Co ltd
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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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/084—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface sliding on a complementary spherical surface
    • 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
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    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
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    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
    • 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
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
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    • 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
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    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4629—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from metal, e.g. cast or 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/56—Selection of substances
    • 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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    • F16C2204/10—Alloys based on copper
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    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/66—High carbon steel, i.e. carbon content above 0.8 wt%, e.g. through-hardenable steel
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Abstract

一种凹球面圆柱滚子轴承，其零件包括外圈、内圈、滚子、保持架。所述外圈为圆环形结构，外径为外圆柱面，外滚道为凸球面形状,外圈滚道可根据实际需求，在滚子两端面位置设置一或两个挡边；所述内圈为圆环形结构，内径为圆柱面，内圈滚道为凸球面形状，内圈滚道凸球面圆心与轴承几何中心相聚为一点；所述滚子滚动面为凹球面形状，材质为轴承钢或陶瓷；所述保持架为环形结构，尼龙材质或黄铜材质，保持架外径圆柱面、保持架内径圆柱面分别关于滚子回转轴线对称。应用本发明设计方案的凹球面调心滚子轴承，具有高转速、易加工、高可靠性、具备主轴不对中补偿功能等显著优点。

Description

一种凹球面圆柱滚子轴承
技术领域
本发明涉及轴承技术领域，主要涉及一种凹球面圆柱滚子轴承。
背景技术
常规圆柱滚子轴承设计的零件包括外圈、内圈、圆柱滚子、保持架等，外圈滚道呈内圆柱面，内圈滚道和滚子滚动面呈外圆柱面，保持架通常由尼龙或黄铜材质制成，可承受径向载荷，受结构设计限制，该类轴承不允许存在主轴的不对中，主轴不可避免的会受到重力作用，因此不对中现象在实际应用中普遍存在，在此工况下运转的圆柱滚子轴承会出现受力不均匀进而造成轴承过早疲劳失效；外圈或/和内圈可有一到两个挡边，用来对滚子进行轴向限位，并提供部分轴向承载能力，为防止与滚子倒角产生干涉以及方便磨加工滚道，在挡边与滚道相交处，必须加工相应的越程槽，当轴向载荷较大时，极易在挡边越程槽位置出现裂纹，甚至挡边局部断裂现象，加大了加工难度，降低了可靠性。
发明内容
发明的目的是提供一种凹球面圆柱滚子轴承，内圈可以相对外圈组件进行自由调心，且可取消挡边的设置，其具有高转速、易加工、高可靠性、具备主轴不对中补偿功能等显著优点。
本发明的目的可采用如下技术方案来实现：本发明的凹球面圆柱滚子轴承，包括外圈、内圈、滚子、保持架。
所述外圈为圆环形结构，外径为外圆柱面，外滚道为凸球面形状；所述内圈为圆环形结构，内径为圆柱面，内圈滚道为凸球面形状；所述滚子滚动面为凹球面形状，材质为轴承钢或陶瓷；所述保持架为环形结构，尼龙材质或黄铜材质。
所述内圈滚道凸球面圆心与轴承几何中心相聚为一点。
所述滚子滚动面凹球面曲率半径与内圈滚道曲率半径相匹配，前后两者半径曲率比值为1.01~1.03，滚子两侧平面可设置有滚子凹穴。
所述外圈滚道凸球面曲率半径与内圈滚道曲率半径相一致，两者曲率圆心在同一径向平面内，外圈滚道左极限交圆与外圈滚道右极限交圆直径大小相等，且圆心均在轴承回转中心轴线上。
所述外圈滚道可根据实际需求，在滚子两端面位置设置一或两个挡边。
所述保持架兜孔直径与滚子滚动面直径相匹配，两者比值为1.006~1.009。
所述保持架外径圆柱面、保持架内径圆柱面分别关于滚子回转轴线对称。
所述保持架外径圆柱面直径为滚子分布中心圆直径与滚子直径之和。
所述保持架内径圆柱面直径为滚子分布中心圆直径与滚子直径之差。
所述保持架可采用组合方式或一体式设计，采用组合式保持架设计时，滚子由保持架侧面装入兜孔；一体式设计时，滚子保持架内径一侧装入兜孔。
附图说明
附图1为现有标准设计的圆柱滚子轴承示意图。
附图2为本发明凹球面圆柱滚子轴承示意图。
附图3为本发明凹球面圆柱滚子轴承外圈示意图。
附图4为本发明凹球面圆柱滚子轴承内圈示意图。
附图5为本发明凹球面圆柱滚子轴承滚子示意图。
附图6为本发明凹球面圆柱滚子轴承一体式保持架示意图。
图中：1外圈，1.1外径，1.2外滚道，1.2.1外滚道左极限交圆，1.2.2外滚道右极限交圆，1.3外圈挡边，1.4轴承回转中心轴线，2内圈，2.1内圈滚道，2.2内径，3滚子，3.1滚子滚动面，3.2滚子凹穴，3.3滚子回转轴线，4保持架，4.1保持架兜孔，4.2保持架外径，4.3保持架内径，4.4滚子分布中心圆
具体实施方式
结合附图，说明本发明的具体实施例。
如附图1至附图6所示：本发明的凹球面圆柱滚子轴承，包括外圈1、内圈2、滚子3、保持架4。
所述外圈1为圆环形结构，外径1.1为外圆柱面，外滚道1.2为凸球面形状，所述外圈滚道1.2凸球面曲率半径与内圈滚道2.1曲率半径相一致。两者曲率圆心在同一径向平面内。外圈滚道1.2可根据实际需求，在滚子3两端面位置设置一或两个挡边1.3。外圈滚道左极限交圆1.2.1与外圈滚道右极限交圆1.2.2直径大小相等，且圆心均在轴承回转中心轴线1.4上。
所述内圈2为圆环形结构，内径2.2为圆柱面，内圈滚道2.1为凸球面形状，内圈滚道2.1凸球面圆心与轴承几何中心相聚为一点。
所述滚子滚动面3.1为凹球面形状，材质为轴承钢或陶瓷，滚子滚动面3.1凹球面曲率半径与内圈滚道2.1曲率半径相匹配，前后两者半径曲率比值为1.01~1.03，滚子3两侧平面可设置有滚子凹穴3.2。
所述保持架4为环形结构，尼龙材质或黄铜材质，保持架兜孔4.1直径与滚子3直径相匹配，两者比值为1.006~1.009，保持架外径4.2圆柱面、保持架内径4.3圆柱面分别关于滚子回转轴线3.3对称，保持架外径4.2圆柱面直径为滚子分布中心圆4.4直径与滚子3直径之和，保持架内径4.3圆柱面直径为滚子分布中心圆4.4直径与滚子3直径之差，保持架4可采用组合方式或一体式设计，采用组合式保持架设计时，滚子3由保持架4侧面装入兜孔4.1；一体式设计时，滚子3由保持架内径4.3一侧装入兜孔4.1。
本发明的有益效果是：
外圈滚道1.2由原来的圆柱面改为了凸球面、内圈滚道2.1由原来的圆柱面改为了凸球面、滚子滚动面3.1由原来的圆柱面改为了凹球面，配合合理的外圈滚道1.2曲率半径、内圈滚道2.1曲率半径和滚子滚动面3.1曲率半径，使内圈2可以相对外圈1组件进行自由调心，使原本不具备主轴不对中补偿功能的圆柱滚子轴承变成了具备主轴不对中补偿功能，从根源上杜绝了原设计中因主轴不对中造成的轴承过早失效的问题；因为外圈滚道1.2凸球面和滚子滚动面3.1凹球面的设计，使得外圈1具备了滚子3的轴向定位功能，可取消原设计的外圈挡边1.3的设置，减少了挡边及越程槽的加工工序，规避了轴承运转时滚子3端面与挡边1.3之间的摩擦阻力，加工难度和启动转矩显著降低，滚子3两侧平面的滚子凹穴3.2的设置，进一步降低了滚子3平面与保持架4之间的摩擦阻力，进而提高了轴承极限转速；滚子滚动面3.1凹球面的设置，使得保持架4的两兜孔4.1之间的梁宽进一步得到了加强，因此，可适用比标准设计更大尺寸、更多数量的加强型设计。综上所述，本发明的凹球面圆柱滚子轴承具有高转速、易加工、高可靠性、具备主轴不对中补偿功能等显著优点。

Claims (9)

1.一种凹球面圆柱滚子轴承，零件包括外圈、内圈、滚子、保持架，其特征在于：
所述外圈为圆环形结构，外径为外圆柱面，外滚道为凸球面形状；所述内圈为圆环形结构，内径为圆柱面，内圈滚道为凸球面形状，所述内圈滚道凸球面圆心与轴承几何中心相聚为一点；所述滚子滚动面为凹球面形状，材质为轴承钢或陶瓷；所述保持架为环形结构，尼龙材质或黄铜材质。
2.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述滚子滚动面凹球面曲率半径与内圈滚道曲率半径相匹配，前后两者半径曲率比值为1.01~1.03，滚子两侧平面可设置有滚子凹穴。
3.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述外圈滚道凸球面曲率半径与内圈滚道曲率半径相一致，两者曲率圆心在同一径向平面内，外圈滚道左极限交圆与外圈滚道右极限交圆直径大小相等，且圆心均在轴承回转中心轴线上。
4.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述外圈滚道可根据实际需求，在滚子两端面位置设置一或两个挡边。
5.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述保持架兜孔直径与滚子滚动面直径相匹配，两者比值为1.006~1.009。
6.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述保持架外径圆柱面、保持架内径圆柱面分别关于滚子回转轴线对称。
7.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述保持架外径圆柱面直径为滚子分布中心圆直径与滚子直径之和。
8.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述保持架内径圆柱面直径为滚子分布中心圆直径与滚子直径之差。
9.根据权利要求1所述的凹球面圆柱滚子轴承，其特征是所述保持架可采用组合方式或一体式设计，采用组合式保持架设计时，滚子由保持架侧面装入兜孔；一体式设计时，滚子保持架内径一侧装入兜孔。
CN202110318100.9A 2021-03-25 2021-03-25 一种凹球面圆柱滚子轴承 Pending CN113175478A (zh)

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