CN108368882A - 滚珠轴承保持架 - Google Patents
滚珠轴承保持架 Download PDFInfo
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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
- F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
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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
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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
- F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
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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
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
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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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
- F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
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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
- F16C19/14—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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/20—Application independent of particular apparatuses related to type of movement
- F16C2300/22—High-speed rotation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
本发明涉及一种滚珠轴承保持架(1),包括多个分别通过周向的侧圈(3,4)的部段和连接所述侧圈(3,4)的连接部段(5)构成的滚动体兜孔(6),所述滚动体兜孔被设计用于沿周向有间隙地引导滚动体(7),其中,所述滚动体兜孔(6)的侧边的导向轮廓(8)平行于所述侧圈(3,4)。根据本发明,所述滚动体兜孔(6)具有在所述侧边的导向轮廓(8)和所述连接部段(3,4)之间的过渡区域中向内凸出的、被设置用于与滚动体(7)接触的角部凸起(11)。
Description
技术领域
本发明涉及一种特别适用于主轴轴承的、根据权利要求1前序部分所述的滚珠轴承保持架。
背景技术
这种滚珠轴承保持架例如由EP 2 787 229 A1已知。该滚珠轴承保持架具有呈圆形且细长的沿轴承保持架的圆周方向延伸的滚动体兜孔。
具有非圆形的滚动体兜孔的另外的滚珠轴承保持架例如由DE 10 2010 047 962A1,由US 2007/0116395 A1以及由WO 2010/066293 A1已知。
发明内容
本发明所要解决的技术问题是,相对所述现有技术改进滚珠轴承保持架,所述滚珠轴承保持架具有滚动体兜孔,所述滚动体兜孔能够在滚动轴承的圆周方向上有间隙地引导滚动体,即滚珠,其中,即使在高转速特性的情况下(例如在机床中的主轴轴承中),也能够使用所述滚珠轴承。
根据本发明,该技术问题通过具有权利要求1的技术特征的滚珠轴承保持架解决。滚珠轴承保持架被设计为窗式保持架,其中,所有滚动体兜孔,即滚动轴承保持架的窗口均具有相同的形状。
在已知的基本结构中,滚珠轴承保持架具有两个周向的侧圈,两个侧圈通过连接部段优选一体式地相互连接。各个滚动体兜孔分别由侧圈的部段和两个沿周向相邻的连接部段限定。每个滚动体兜孔的侧边的导向轮廓相互平行且与侧圈平行。与侧边的导向轮廓不同,滚动体兜孔的、由连接部段构成的边界被称为边缘部段。然而,与侧向导向轮廓相反,滚动体,即滚珠不必须在边缘部段上滚动。相反,总共四个角部凸起在侧边的导向轮廓和连接部段之间的过渡区域中伸进滚动体兜孔中,角部凸起被设置用于与位于滚动体兜孔中的滚动体接触。因此,借助侧边的导向轮廓沿滚珠轴承的周向有间隙地引导滚动体,其中,滚动体和滚珠轴承保持架之间的接触区域同时借助角部凸起被减少,接触区域在滚动体沿周向滚向滚动体兜孔时与保持架摩擦相关。
滚动体兜孔的、具有直的侧边的导向轮廓和伸进滚动体兜孔的角部凸起的复杂形状同时提供了润滑剂存储器,因此润滑剂,特别是润滑脂,能够通过非常短的距离到达在滚动体和滚珠轴承保持架之间的接触面积。滚珠轴承保持架因低摩擦也适用于高转速特征的应用,其中,与传统的轴承设计不同,即使是在极端条件下仍然能够在没有外部冷却的情况下使用所述轴承。
在一个有利的设计方式中,向内伸进每个滚动体兜孔的角部凸起分别具有倒圆,其倒圆半径至少等于过渡半径,过渡半径在角部凸起和侧边的通过侧圈构成的导向轮廓之间形成。在此,在角部凸起上构成的倒圆形成弯曲部,该弯曲部与在角部凸起和侧边的导向轮廓之间的过渡区域中给出的弯曲部方向相反。总的来说,滚动体兜孔的边缘交替形成凹凸轮廓。
基本平行于滚珠轴承轴线定向的边缘部段在每两个角部凸起之间优选地形成滚动体兜孔的直线型的边界,该边界与侧边的导向轮廓垂直地定向。这至少在边缘部段和连接部段的外圆周之间的过渡区域中适用。因此,在滚珠轴承保持架的沿径向从外侧朝向轴承轴线的俯视图中,滚动体兜孔形成闭合的矩形的基本形状,其中,直角通过指向滚动体兜孔的中心的角部凸起改进,所以,近似地形成十二边形。
在一个有利的设计方案中,每个滚动体兜孔沿径向从外向内至少对于侧边的导向轮廓逐渐收缩。在此,侧边的导向轮廓以导向轨的形式延伸到滚珠轴承保持架的内周。在这种情况下,设置导向轨用于在保持滚动体的周向间隙的情况下在滚动体兜孔内侧沿径向引导滚动体。所有导向轨的整体位于小于滚珠轴承保持架的节圆的圆上。节圆是指穿过轴承的滚珠的中心的圆。由此通过滚动体在滚珠的内侧沿径向支撑滚珠轴承保持架。优选地,导向轨位于的圆的半径和滚动轴承的节圆的半径之间的差,一方面足够大,使得滚动体和轴承保持架之间具有足够稳定的沿径向的支撑,另一方面足够小,使得各个滚珠靠近其分别通过滚珠轴承保持架的旋转轴线接触,从而在滚珠表面和轴承保持架之间的相对速度和由此的滚动体和滚珠轴承保持架之间的摩擦保持较小。
侧圈的两个外侧的端面优选是平的,从而滚珠轴承保持架总体呈圆柱形,该圆柱形由平面的端面限定形状。滚动体兜孔的沿径向向内的收缩相当于侧圈沿径向向内变宽。相反地,沿周向测量的连接部段的厚度优选沿径向从外向内递减。在滚珠轴承保持架的外周上,连接部段优选平滑地过渡到侧圈,也就是说,侧圈的外周(与整个滚珠轴承保持架的外周相同)与直接绕连接部段的圆的圆周重合,而连接部段的内侧优选相比侧圈沿径向向内延伸得较少。因此,在滚珠轴承保持架的内侧通过连接部段形成凹口或凹部。这些凹口或凹部用于容纳润滑剂的额外体积。
滚珠轴承保持架能够合理地由塑料制成,特别是由纤维增强塑料制成。滚珠轴承保持架例如能够用于深沟滚珠轴承,四点接触滚珠轴承或角接触滚珠轴承。
附图说明
下面参照附图,在两个优选实施方式中更详细地解释根据本发明设计的滚珠轴承保持架。附图为:
图1是滚珠轴承保持架的第一实施例的立体图,
图2是根据图1的滚珠轴承保持架的细节,其中引导有滚珠,
图3是具有根据图1的滚珠轴承保持架的滚珠轴承的部件的剖视图,
图4是根据图1的滚珠轴承保持架在径向上的局部俯视图,
图5是滚珠轴承保持架的改进的实施方式。
具体实施方式
除非另有说明,以下陈述涉及两个实施例。相应的或基本上等同的部分总是由相同的附图标记表示。
滚珠轴承保持架1被设计为由塑料制成的窗式保持架,并且用于被标记为2的滚珠轴承。滚珠轴承保持架1由两个通过连接部段5相互连接的侧圈3,4组成,其中,在侧圈3,4的部段和连接部段5之间形成滚动体兜孔6,滚动体兜孔被设置用于分别引导滚动体7,即滚珠。
平行于侧圈3,4的端面地将限定滚动体兜孔6的导向轮廓8这样延伸,使得滚动体7在滚动体兜孔6中具有沿滚珠轴承保持架的圆周方向的间隙。以导向轨9的形式运行导向轮廓8延伸在侧圈3,4的内侧上,导向轨9接合在滚动体7下方。导向轨9靠近滚珠轴承2的通过10标记的内圈,滚动体7在该内圈上滚动。被设计在侧圈3,4的内圆周上的导向轨9分别形成位于滚珠轴承2的节圆的径向内侧的圆。节圆是穿过滚动体7的中心的圆。
导向轨9在滚动体7上沿滚珠轴承2的径向支撑滚珠轴承保持架1,伸向滚动体兜孔6的角部凸起11用于使得每个滚动体7在避免大面积接触的情况下沿周向有间隙地通过滚动体兜孔6。在滚动体7和角部凸起11之间的接触区域中,角部凸起11具有倒圆,倒圆半径由rE表示。角部凸起11通过过渡半径rU过渡到侧圈3,4中。过渡半径rU小于每个角部凸起11的倒圆半径rE。
在两个分别与侧圈3,4相邻的角部凸起11之间的区域中,滚动体兜孔6由沿滚珠轴承2的轴向延伸的边缘部段12限定。边缘部段12和角部凸起11之间的过渡半径对应于角部凸起11和侧边的导向轮廓8之间的过渡半径rU。如在图2中特别示出,当滚动体6滚向角部凸起11,滚动体不与边缘部段12接触,使得滚动体7和边缘部段12之间保持润滑脂腔13。
如所描述的,每个滚动体兜孔6的径向向内的收缩由侧圈3,4的沿径向向内、朝向导向轨9更厚的形状形成。相对地,连接部段5从边缘部段12开始沿径向从外侧到内侧(沿滚珠轴承保持架1的圆周方向测量)渐薄。以这种方式,提供了特别大的润滑脂腔13。该效果在根据图5的实施方式中特别明显,其中,连接部段5在其内侧(即沿滚珠轴承2的旋转轴线的方向)具有凹口14。因此,根据图5的滚珠轴承保持架的连接部段5的沿径向测量的高度小于侧圈3,4的沿相同方向测量的高度。
附图标记列表
1 滚珠轴承保持架
2 滚珠轴承
3 侧圈
4 侧圈
5 连接部段
6 滚动体兜孔
7 滚动体
8 侧边的导向轮廓
9 导向轨
10 内圈
11 角部凸起
12 边缘部段
13 润滑脂腔
14 凹口
rE 倒圆半径
rU 过渡半径
Claims (10)
1.一种滚珠轴承保持架(1),包括多个分别通过周向的侧圈(3,4)的部段和连接所述侧圈(3,4)的连接部段(5)构成的滚动体兜孔(6),所述滚动体兜孔被设计用于沿周向有间隙地引导滚动体(7),其中,所述滚动体兜孔(6)的侧边的导向轮廓(8)平行于所述侧圈(3,4),其特征在于,所述滚动体兜孔(6)具有在所述侧边的导向轮廓(8)和所述连接部段(3,4)之间的过渡区域中向内凸出的、被设置用于与滚动体(7)接触的角部凸起(11)。
2.根据权利要求1所述的滚珠轴承保持架(1),其特征在于,向内凸出的角部凸起(11)具有倒圆,所述倒圆的倒圆半径(rE)至少等于过渡半径(rU),所述过渡半径在所述角部凸起(11)和所述侧边的导向轮廓(8)之间形成。
3.根据权利要求1或2所述的滚珠轴承保持架(1),其特征在于,所述滚动体兜孔(6)的位于两个角部凸起(11)的轴向之间的边缘部段(12)形成所述滚动体兜孔(6)的直线型的、与所述侧边的导向轮廓(8)垂直的边界。
4.根据权利要求1至3中任一项所述的滚珠轴承保持架(1),其特征在于,所述滚动体兜孔(6)沿径向向内收缩。
5.根据权利要求4所述的滚珠轴承保持架(1),其特征在于,所述侧边的导向轮廓(8)以沿周向延伸的导向轨(9)的形式沿径向向内延伸,所述导向轨被设置用于在保持周向间隙的情况下沿径向引导滚动体(7)。
6.根据权利要求1至3中任一项所述的滚珠轴承保持架(1),其特征在于,所述连接部段(5)的沿周向测量的厚度沿径向从外向内递减。
7.根据权利要求6所述的滚珠轴承保持架(1),其特征在于,所述连接部段(5)的内侧轮廓在径向上比所述侧圈(3,4)的内侧轮廓更靠外侧。
8.根据权利要求1至7中任一项所述的滚珠轴承保持架(1),其特征在于,所述滚珠轴承保持架仅具有相同形状的滚动体兜孔(6)。
9.根据权利要求1至8中任一项所述的滚珠轴承保持架(1),其特征在于,所述滚珠轴承保持架由塑料,特别是由纤维增强塑料制成。
10.一种在主轴轴承中,特别在机床的主轴轴承中应用根据权利要求1所述的滚珠轴承保持架(1)的方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102015224859.3A DE102015224859A1 (de) | 2015-12-10 | 2015-12-10 | Kugellagerkäfig |
DE102015224859.3 | 2015-12-10 | ||
PCT/DE2016/200523 WO2017097295A1 (de) | 2015-12-10 | 2016-11-18 | Kugellagerkäfig |
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CN108368882A true CN108368882A (zh) | 2018-08-03 |
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CN201680070569.2A Pending CN108368882A (zh) | 2015-12-10 | 2016-11-18 | 滚珠轴承保持架 |
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Country | Link |
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US (1) | US20180363706A1 (zh) |
EP (1) | EP3387277A1 (zh) |
CN (1) | CN108368882A (zh) |
DE (1) | DE102015224859A1 (zh) |
WO (1) | WO2017097295A1 (zh) |
Cited By (1)
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CN112739923A (zh) * | 2018-09-21 | 2021-04-30 | Ntn株式会社 | 滚珠轴承用保持架及滚动轴承 |
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JP6556454B2 (ja) * | 2014-09-30 | 2019-08-07 | Ntn株式会社 | 玉軸受用保持器 |
DE102015223255A1 (de) * | 2015-11-25 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Kugellagerkäfig |
CN108757737A (zh) * | 2018-08-10 | 2018-11-06 | 江苏天驰轴承有限公司 | 一种轴承及其纺锤形的滚动体 |
DE102020103421A1 (de) * | 2020-02-11 | 2021-08-12 | Liebherr-Components Biberach Gmbh | Wälzlager mit Überwachungsvorrichtung |
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Also Published As
Publication number | Publication date |
---|---|
US20180363706A1 (en) | 2018-12-20 |
EP3387277A1 (de) | 2018-10-17 |
WO2017097295A1 (de) | 2017-06-15 |
DE102015224859A1 (de) | 2017-06-14 |
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