CN103946566A - 滚动轴承 - Google Patents

滚动轴承 Download PDF

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CN103946566A
CN103946566A CN201280056966.6A CN201280056966A CN103946566A CN 103946566 A CN103946566 A CN 103946566A CN 201280056966 A CN201280056966 A CN 201280056966A CN 103946566 A CN103946566 A CN 103946566A
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rolling bearing
lasso
radius
ball
raceway
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CN103946566B (zh
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西尔维娅·海德
约阿希姆·克吕佩尔
科尔内留斯·哈特曼
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Schaeffler Technologies AG and Co KG
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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
    • F16C33/58—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
    • F16C33/62—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
    • F16C33/64—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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • 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
    • F16C19/18—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 two or more rows of balls
    • F16C19/181—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 two or more rows of balls with angular contact
    • F16C19/183—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 two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—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 two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/04—Hardness
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/06—Strength or rigidity
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • 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
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii
    • F16C2240/76—Osculation, i.e. relation between radii of balls and raceway groove

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

Abstract

本发明涉及一种在具有低转速的应用中，特别是在搬运车辆的驱动器中的滚动轴承(1)，该滚动轴承具有设有预先给定的滚珠半径(r)的滚珠(6、7)，这些滚珠在两个彼此径向布置的至少局部硬化的套圈(2、3)之间、在具有预先给定的横向于套圈(2、3)的转动轴线的滚道半径(R)的滚道(4、5)中滚动。为了能够在类似的耐久性下以更小的生产耗费提供特别是针对缓慢转动的应用的滚动轴承(1)，根据本发明，至少其中一个套圈(2、3)由透淬的具有贝氏体组织的钢形成，并且伴有至少一个套圈(2、3)的滚道半径(R)与滚珠半径(r)的比例(R/r)的密合度小于等于1.02。

Description

滚动轴承
技术领域
本发明涉及一种在具有低转速的应用中的，特别是在搬运车辆的驱动器中的滚动轴承，该滚动轴承具有设有预先给定的滚珠半径的滚珠，这些滚珠在两个彼此径向布置的、至少局部硬化的套圈之间在具有预先给定的横向于套圈的转动轴线的滚道半径的滚道中滚动。
背景技术
这种类型的滚动轴承以公知的方式包括两个彼此径向插装的套圈，也就是说外圈和内圈。在套圈的彼此面对的周边上引入用于滚珠的滚道。在此，滚珠在优选构造成槽形的滚道中滚动，从而使轴承圈能相对彼此滚动地绕转动轴线扭转。在此，为了改善磨损将滚珠与滚道之间的触碰接触以如下方式构造成不是完全面式的，即，使滚道和滚珠的半径并不精确相等地构造。在此，所谓的密合度(Schmiegung)说明了滚道半径与滚珠半径之间的比例。公知的滚动轴承具有例如大于1.02至1.06的比例的密合度，这意味着，滚道半径是滚珠半径的102％至106％。套圈在滚道的区域中由此出现的局部点式的负载需要很高的额定载荷(Tragzahl)，这些额定载荷通过应用能高压力负载的、能使用在实现足够的表面硬度的渗碳硬化方法中的且相应地高成本的材料来实现。用于对滚动轴承的套圈进行渗碳硬化的方法例如由DE102006040814A1公知。这种方法在生产技术上是耗费且高成本的。
发明内容
因此，从公知的现有技术的上述缺点出发，本发明的任务在于，提供一种在以低转速转动的应用中的滚动轴承，该滚动轴承能够以降低的生产成本来制造。
根据本发明，该任务在根据权利要求1的前序部分的滚动轴承中以如下方式来解决，即，至少其中一个套圈由透淬的具有贝氏体组织的钢构成，并且伴有至少一个套圈的滚道半径与滚珠半径的比例的密合度小于等于1.02。具有在1.02与大于1.00之间的比例的特别小的密合度已证明是特别有利的。
由于在减小的密合度的情况下增加的额定载荷可以取消很高的表面硬度并且因此取消生产上耗费的渗碳硬化方法。在此证明有利的是，一个或两个套圈借助相应的硬化方法以如下方式透淬，即，形成了基础钢结构的贝氏体组织。硬化可以在硬化炉中以相应的温度引导来实现，而无需渗入材料。比较高的、但相对于经渗碳硬化的套圈减小的、对于形成套圈的由于密合度的减小的比例值而较小的额定载荷却仍足够的硬度通过在具有碳化物的层中形成针状铁素体(Ferritnadeln)或者片状铁素体(Ferritplatten)来形成。在此已证实，用于套圈的特别有利的贝氏体钢具有大于等于67J的冲击韧性，其中，对相应的钢样品按DIN EN10045-1无缺口地检验冲击韧性。此外有利的是，推荐的贝氏体钢具有最大为58HRC的硬度。
根据本发明提出的由滚道半径与滚珠半径的密合度的低的比例值和较高额定载荷的滚道的组合特别是对于具有小于500转每分钟的转速的低转速要求的滚动轴承来说是有利的，从而使得在使用寿命内出现的由于通过较高的磨擦产生的较高的热负载的磨损是微不足道的。不言而喻的是，为了减小磨擦可以例如在套圈之间设置相应的带有阻挡元件的润滑材料应用，例如对滚动轴承的接触粘附式或非接触式的封装。
尤其是在搬运车辆中的滚动轴承的缓慢转动的应用是特别有利的。在此，滚动轴承可以设置用于车辆以车轮的运动、控制车辆和/或抬升负载。在此，滚动轴承可以尤其使用在起重机(例如搬运车辆的升降托叉、悬臂和类似物)、电梯或类似物的运转滚轮和支撑滚轮和/或曲线滚轮中，在曲线滚轮中，内套圈构造为实心的螺栓。像在DE2803169A1中公开的那样，在搬运车辆(比如叉车)的升降门架滚轮(Hubmastrolle)中应用提出的滚动轴承是特别有利的。在此，构造有较小的密合度的比例的滚动轴承的磨擦在所有情况下可以忽略不计。通过一个或多个套圈的透淬的材料仍然以有利的方式给出了滚动轴承的高负载能力。
在最简单的情况下，滚动轴承设置为每个套圈具有各一个唯一的滚道的单槽滚动轴承。但是，为了保证相对转动轴线的防倾斜要求，已证实有利的是每个套圈具有多个，优选两个轴向并排布置的滚道。这些滚道可以根据不同的半径和/或在维持提出的密合度的比例值的情况下以不同的滚道半径和滚珠半径来设置。但优选的是构造两个在滚道半径和滚珠半径上相同的滚道，用于构造出双槽滚动轴承。
附图说明
下面参考附图进一步描述根据本发明构造的滚动轴承的优选实施方式。在此，唯一的附图示出根据本发明构造的滚动轴承的剖面图。
具体实施方式
唯一的附图示出绕转动轴线x旋转对称的滚动轴承1，该滚动轴承具有构造为外圈的套圈2和构造为内圈的套圈3。在其他实施方案中，内圈可以构造为螺栓。套圈2、3分别具有彼此面对的滚道4、5，它们用于轴向相间隔地容纳在周边上分布且彼此相间隔地容纳在滚珠保持架8、9中的滚珠6、7。滚珠6、7利用滚道4、5由于它们的轴向间隔形成双列滚动轴承1，该双列滚动轴承的滚珠6、7以及滚道4、5在所示实施例中分别具有相同的滚珠半径r和滚道半径R。
为了构造出滚动轴承1的高承载能力，在由具有贝氏体组织的钢构成的套圈2、3(它们与通过渗碳硬化制成的滚道相比具有很高的额定载荷)中，减小滚道半径R与滚珠半径r密合度的比例R/r，从而增大了滚珠6、7在它们各自的套圈2、3的滚道4、5上的承载面积，由此整体上在稍微增大了的摩擦(该摩擦对于低速转动的滚动轴承1而言是不重要的)的情况下实现了相似的或者甚至改善的承载能力。在此，滚动轴承1构造有小于等于1.02，优选在1.02与大于1.00之间的比例R/r。
为了避免在滚珠6、7与套圈2、3的滚道4、5之间的滚动部位的摩擦，或者说滚珠6、7相对于它们的滚珠保持架8、9的摩擦，在套圈2、3之间的环形间隙10至少局部地以润滑材料填充，该润滑材料通过在套圈之间径向地布置在套圈2、3的端侧上的密封垫11、12受到保护以防外溢，这些密封垫此外还防止了污染物，比如脏物、水和类似物进入。
附图标记列表
1   滚动轴承
2   套圈
3   套圈
4   滚道
5   滚道
6   滚珠
7   滚珠
8   滚珠保持架
9   滚珠保持架
10  环形间隙
11  密封垫
12  密封垫
r   滚珠半径
R   滚道半径
x   转动轴线

Claims (10)

1.一种在具有低转速的应用中，特别是在搬运车辆中的滚动轴承(1)，所述滚动轴承具有设有预先给定的滚珠半径(r)的滚珠(6、7)，这些滚珠在两个彼此径向布置的至少局部硬化的套圈(2、3)之间、在具有预先给定的横向于套圈(2、3)的转动轴线的滚道半径(R)的滚道(4、5)中滚动，其特征在于，所述套圈(2、3)中的至少一个套圈由透淬的具有贝氏体组织的钢形成，并且伴有至少一个套圈(2、3)的滚道半径(R)与滚珠半径(r)的比例(R/r)的密合度小于等于1.02。
2.根据权利要求1所述的滚动轴承(1)，其特征在于，密合度的比例在1.02与大于1.00之间。
3.根据权利要求1或2所述的滚动轴承(1)，其特征在于，设置有多个用于多列滚珠(6、7)的轴向彼此相间隔的滚道(4、5)。
4.根据权利要求1至3中任一项所述的滚动轴承(1)，其特征在于，所述滚动轴承(1)的使用转速小于500转每分钟。
5.根据权利要求1至4中任一项所述的滚动轴承(1)，其特征在于，按DIN EN10045-1在无缺口的情况下，所述至少一个套圈(2、3)具有大于等于67J的冲击韧性。
6.根据权利要求1至5中任一项所述的滚动轴承(1)，其特征在于，所述至少一个套圈(2、3)具有小于等于58HRC的硬度。
7.根据权利要求1至6中任一项所述的滚动轴承，所述滚动轴承应用在搬运车辆的升降门架滚轮中。
8.根据权利要求1至7中任一项所述的滚动轴承(1)，所述滚动轴承应用在搬运车辆的运转滚轮中。
9.根据权利要求1至8中任一项所述的滚动轴承(1)，所述滚动轴承应用在搬运车辆的支撑滚轮中。
10.根据权利要求1至9中任一项所述的滚动轴承，所述滚动轴承应用在搬运车辆的曲线滚轮中。
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PCT/EP2012/072216 WO2013075953A1 (de) 2011-11-23 2012-11-09 Wälzlager

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JP (1) JP2014534398A (zh)
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CN106197843A (zh) * 2016-08-31 2016-12-07 北京航天动力研究所 一种现场扭矩校准装置
CN110987152A (zh) * 2019-11-27 2020-04-10 苏州长风航空电子有限公司 一种高精度磁电式航空用振动测量装置
CN111684165A (zh) * 2018-03-05 2020-09-18 舍弗勒技术股份两合公司 用于内燃机的涡轮增压机

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CN106197843A (zh) * 2016-08-31 2016-12-07 北京航天动力研究所 一种现场扭矩校准装置
CN111684165A (zh) * 2018-03-05 2020-09-18 舍弗勒技术股份两合公司 用于内燃机的涡轮增压机
CN110987152A (zh) * 2019-11-27 2020-04-10 苏州长风航空电子有限公司 一种高精度磁电式航空用振动测量装置

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WO2013075953A1 (de) 2013-05-30
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EP2783120A1 (de) 2014-10-01
PL2783120T3 (pl) 2017-12-29
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DE102011086933A1 (de) 2013-05-23
CN103946566B (zh) 2017-05-17

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