KR100664848B1 - Low friction ball bearing - Google Patents

Low friction ball bearing Download PDF

Info

Publication number
KR100664848B1
KR100664848B1 KR1020060012229A KR20060012229A KR100664848B1 KR 100664848 B1 KR100664848 B1 KR 100664848B1 KR 1020060012229 A KR1020060012229 A KR 1020060012229A KR 20060012229 A KR20060012229 A KR 20060012229A KR 100664848 B1 KR100664848 B1 KR 100664848B1
Authority
KR
South Korea
Prior art keywords
retainer
ball
cylinder
ball bearing
steel
Prior art date
Application number
KR1020060012229A
Other languages
Korean (ko)
Inventor
이재선
최순
김지호
박근배
Original Assignee
한국원자력연구소
한국수력원자력 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국원자력연구소, 한국수력원자력 주식회사 filed Critical 한국원자력연구소
Priority to KR1020060012229A priority Critical patent/KR100664848B1/en
Application granted granted Critical
Publication of KR100664848B1 publication Critical patent/KR100664848B1/en

Links

Images

Classifications

    • 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
    • F16C33/3881—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages with more than three parts, e.g. two end rings connected by individual stays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B23Q11/0816—Foldable coverings, e.g. bellows
    • 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
    • F16C33/3893—Ball cages with rolling elements with smaller diameter than the load carrying balls, e.g. cages with counter-rotating spacers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Landscapes

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

Abstract

A low friction ball bearing is provided to improve stability and reliability by installing the side reinforcing rings at both sides of the side retainer and circumferentially placing the cylinder retainer. A low friction ball bearing comprises a ball bearing outer ring(1); a ball bearing inner ring(2) installed in the outer ring; plural steel balls(3) inserted between the outer and inner rings; a cylinder retainer(5) in which an inner reinforcing cylinder(4) is inserted; side retainers(6) formed at both width surfaces of the steel ball; and side reinforcing rings(7) mounted at both sides of the side retainers installed at both sides of the steel ball. The cylinder retainer is point-contacted with the steel ball, and sliding-contacted with the inner reinforcing cylinder.

Description

저마찰 볼베어링{Low Friction Ball Bearing}Low Friction Ball Bearings

도 1 은 실린더형 리테이너가 장착된 저마찰 볼베어링의 단면도,1 is a cross-sectional view of a low friction ball bearing equipped with a cylindrical retainer,

도 2는 본 발명에 따른 저마찰 볼 베어링의 측단면도이,Figure 2 is a side cross-sectional view of a low friction ball bearing according to the present invention,

도 3은 본 발명의 실린더 리테이너, 내부보강 실린더, 측면 리테이너, 측면 보강링 및 리테이너 결합기구를 보인 분해 사시도이다. 3 is an exploded perspective view showing a cylinder retainer, an internal reinforcing cylinder, a side retainer, a side reinforcement ring, and a retainer coupling mechanism of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

(1) : 볼베어링 외륜 (2) : 볼베어링 내륜(1): ball bearing outer ring (2): ball bearing inner ring

(3) : 강구 (4) : 내부보강 실린더(3): Steel ball (4): Internal reinforcement cylinder

(5) : 실린더 리테이너 (6) : 측면 리테이너(5): cylinder retainer (6): side retainer

(7) : 측면 보강링 (8) : 리테이너 결합기구(7): side reinforcement ring (8): retainer coupling mechanism

본 발명은 저마찰 볼베어링에 관한 것으로, 자세하게는 일체형원자로 스마트(SMART)에 장착되는 제어봉구동장치용 볼베어링 등 저점도의 액체로 윤활되어 기존 에 개발되어 있는 베어링으로는 마찰이 크게 발생하여 적용이 어려운 기기에 사용되는 볼베어링에 관한 것이며, 특히 리테이너와 강구 사이에 발생하는 마찰력을 저감시켜 베어링에 발생하는 전체 마찰력을 감소시킨 볼베어링에 관한 것이다.The present invention relates to a low friction ball bearing, and in detail, it is difficult to apply to a bearing developed in the existing lubrication with low viscosity liquid such as a ball bearing for a control rod drive device mounted on an integrated reactor smart (SMART). The present invention relates to a ball bearing used in an apparatus, and more particularly to a ball bearing which reduces the overall frictional force generated in a bearing by reducing the frictional force generated between the retainer and the steel ball.

원자로는 고온, 고압의 냉각수를 원자로 내에 순환시켜 고온의 증기를 발생시키도록 구성되며, 출력 조정을 위하여 제어봉구동장치를 사용한다. 일체형원자로에서는 제어봉구동장치의 구동을 위해서 볼스크류와 볼베어링 등 기계요소가 사용되는데 고온, 고압 하에서 구동 요소간 접촉부에 별도의 윤활유를 공급하거나 시일, 시일드 등의 밀봉장치를 구성하는 것이 불가능하여 냉각수인 물로 윤활되어야 한다. The reactor is configured to circulate high temperature and high pressure cooling water in the reactor to generate high temperature steam, and control rod driving device is used for output adjustment. In the integrated reactor, mechanical elements such as ballscrews and ball bearings are used to drive the control rod driving device, and it is impossible to supply a separate lubricating oil to the contact between the driving elements under high temperature and high pressure, or to construct a sealing device such as a seal or a seal, It should be lubricated with water.

특히 볼베어링에 있어 강판프레스 리테이너(Steel pressed retainer)나 일반적인 플라스틱 리테이너[Application Number 2000-7010397, 볼 베어링용 케이지와, 이러한 케이지를 구비하는 볼 베어링], 기계가공형 리테이너를 사용한 볼베어링은 리테이너와 강구 간의 과다 마찰로 인해 회전이 불량하고 조기 파손되기 때문에 높은 신뢰도가 요구되는 원자로용 제어봉구동장치 등에는 사용할 수 없다는 문제점이 있다.Especially for ball bearings, steel pressed retainers or general plastic retainers [Application Number 2000-7010397, cages for ball bearings and ball bearings with these cages], and ball bearings with machined retainers are used between the retainers and the steel balls. Due to excessive friction, the rotation is poor and premature failure, there is a problem that can not be used in a control rod drive device for a reactor that requires high reliability.

이러한 리테이너는 리테이너 포켓이 강구를 감싸는 형태의 면접촉이 되는데 저점도의 유체로 윤활되는 경우 과다한 마찰력에 의해 강구의 회전이 불량하게 되는 원인이 된다. Such a retainer is in surface contact with the retainer pocket surrounding the steel ball, but when lubricated with a low viscosity fluid, excessive rotation of friction causes the steel ball to become poor.

유사한 형태의 리테이너로 분절형 리테이너[20-1999-0003981, 대형구름베어 링의 분절형 리테이너] 등이 있으나 면접촉 시 발생하는 큰 마찰력으로 인해 수윤활 등의 불량한 윤활조건에서는 적용이 불가능하다는 문제점이 있다. Similar retainers are segmented retainers [20-1999-0003981, segmented retainers for large rolling bearings], but they are not applicable to poor lubrication conditions such as water lubrication due to the large frictional forces generated during surface contact. have.

더욱이 원자로용 베어링 등과 같은 적용 부위에는 리테이너에 윤활제를 함유시킬 경우 냉각재의 오염이 발생하므로 윤활제를 함유한 리테이너의 적용이 불가능하다.In addition, application of a retainer containing a lubricant is not possible in an application site such as a bearing for a nuclear reactor because the contamination of the coolant occurs when the retainer contains a lubricant.

리테이너와 강구 간의 접촉형태를 면접촉에서 점접촉 형태로 변환하여 마찰력을 저감시키기 위한 발명의 한 예로 복열 볼베어링에 대해 두열의 궤도홈 간격을 조정하여 두열의 강구들이 톱니 같이 서로 견제하도록 한 발명 등이 있으나, 이는 단열 볼베어링에는 적용이 불가능하다는 문제점이 있다[1989-0008356, 구름 베어링의 마찰을 줄이는 방법 및 장치]. As an example of the invention for reducing the frictional force by converting the contact form between the retainer and the steel ball from the surface contact to the point contact type, the invention in which the two rows of steel balls are held together as a sawtooth by adjusting the interval between two rows of grooves for a double row ball bearing. However, this has a problem that it is not applicable to a single row ball bearing [1989-0008356, method and apparatus for reducing friction of rolling bearings].

또 다른 예로 위치결정 구름 부재가 대향 단부의 레이스웨이 상의 위치결정 링에 의해 제한되도록 하고, 강구와 강구 사이에 위치결정 구름 부재를 위치시켜 리테이너의 역할을 수행하도록 하면서 베어링 내 모든 접촉부에 순수 구름 접촉이 발생하도록 한 순수 구름 베어링[10-2001-7002170, 순수 구름 베어링]이 있으나, 이 경우에도 위치결정 구름 부재는 위치결정 링에 의해서 안내는 되나 정해진 위치에 구속되지는 않기 때문에 등 간격으로 강구를 배열시킬 수 없다. In another example, the pure rolling contact to all the contacts in the bearing is made while the positioning rolling member is limited by the positioning ring on the raceway at the opposite end and the positioning rolling member is positioned between the steel ball and the steel ball to serve as a retainer. Although there are pure rolling bearings [10-2001-7002170, pure rolling bearings], the positioning rolling members are guided by the positioning ring but are not constrained to the fixed position. Cannot be arranged.

강구가 베어링 원주 상에 균등하게 배열되지 않을 경우에는 개개 강구의 공전 속도에 따라 여러 개의 강구가 서로 간섭되어 몰릴 수 있으며, 이 경우 강구의 회전은 제약을 받게 된다. If the steel balls are not evenly arranged on the bearing circumference, several steel balls may interfere with each other depending on the idle speed of the individual steel balls, in which case the rotation of the steel balls is restricted.

특히 원자로용 베어링과 같이 저점도의 윤활제로 윤활되어 접촉점에서의 마찰이 큰 경우에는 강구의 쏠림 현상이 크게 발생하며, 이는 베어링 회전 불량의 원인이 된다.In particular, when the friction at the contact point is large because the lubricant is lubricated with a low viscosity lubricant such as a bearing for a nuclear reactor, the deflection of steel balls occurs largely, which causes bearing rotation failure.

이외 많은 리테이너의 발명은 쉽게 베어링에 조립할 수 있는 구조에 주안점을 두어 생산성 향상을 꾀하는데 목적이 있어 베어링의 마찰 저감에는 기여하지 않는다.In addition, many of the inventions of the retainer are intended to improve productivity by focusing on a structure that can be easily assembled to the bearing, and thus do not contribute to reducing the friction of the bearing.

따라서 종래의 볼베어링이 수윤활 등 불량한 윤활조건 하에는 사용할 수 없다는 문제점이 있다.Therefore, there is a problem that conventional ball bearings cannot be used under poor lubrication conditions such as water lubrication.

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 물과 같이 저점도의 유체 등으로 윤활되는 열악한 윤활 조건에서 강구 간의 공전 속도 차이에 따른 상호 간섭을 방지할 수 있도록 견고한 구조의 리테이너로 구성되고, 강구와 리테이너 포켓 간에는 점접촉이 발생하도록 하고 세라믹 또는 자기윤활성이 우수한 소재를 사용한 실린더 리테이너를 사용하여 마찰력을 저감시키고, 실린더 리테이너 부재 자체가 내부 보강 실린더에 안내되어 회전하게 되어 베어링 전체 회전마찰을 감소시켜 베어링의 신뢰성을 제공하고 필요수명을 보장하며, 개방형의 볼베어링을 실현하여 내부순환냉각재를 베어링 폭방향으로 유동시킬 수 있는 구조 설계를 갖는 저마찰 볼베어링을 제공하는데 있다.An object of the present invention for solving the above problems is composed of a retainer of a rigid structure to prevent mutual interference due to the difference in revolving speed between the steel balls in poor lubrication conditions lubricated with a low viscosity fluid, such as water, The point contact between the steel ball and the retainer pocket is generated, and the cylinder retainer made of ceramic or self-lubricating material is used to reduce friction, and the cylinder retainer member is guided to the internal reinforcement cylinder to rotate, reducing the overall friction of the bearing. It is to provide a low friction ball bearing having a structural design that can provide the reliability of the bearing, guarantee the required life, and realize the open ball bearing to flow the internal circulating coolant in the bearing width direction.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명의 구성은 실린더 형태의 실린더 리테이너(5)와 측면 리테이너 (6) 가 리테이너 포켓을 형성하여 강구(3)와 점접촉을 함과 동시에 실린더 리테이너(5)가 내부보강 실린더(4) 주위를 회전하여 마찰력을 저감시키고, 견고한 측면 보강링(7)이 실린더 리테이너(5)를 원주 방향으로 위치고정하여 강구 간 상호 간섭을 방지하고 볼베어링의 원활한 회전을 보장하도록 구성된 볼베어링을 특징으로 한다.The construction of the present invention to achieve the object as described above and to perform the problem for eliminating the conventional drawbacks is that the cylinder retainer 5 and the side retainer 6 in the form of a cylinder form a retainer pocket to form a steel ball 3 At the same time, the cylinder retainer 5 rotates around the inner reinforcement cylinder 4 to reduce friction, while the rigid side reinforcement ring 7 fixes the cylinder retainer 5 in the circumferential direction to mutually interfere with the steel balls. It is characterized by a ball bearing configured to prevent and ensure a smooth rotation of the ball bearing.

이하 본 발명의 실시예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다.Hereinafter, the configuration and the operation of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1 은 본 발명에 따른 저마찰 볼베어링의 정단면도, 도 2는 본 발명에 따른 저마찰 볼 베어링의 측단면도를 나타내고 있는데, 원자로용 볼베어링 등과 같이 물 또는 저점도의 액체 속에서 운전되는 베어링은 스테인리스강 또는 세라믹 소재를 베어링 외,내륜(1,2) 및 강구(3)로 사용하였다. 1 is a front sectional view of a low friction ball bearing according to the present invention, Figure 2 is a side cross-sectional view of a low friction ball bearing according to the present invention, such as a ball bearing for nuclear reactors are operated in water or low viscosity liquids such as stainless steel Steel or ceramic material was used as the bearing, the inner ring (1, 2) and the steel ball (3).

볼베어링용 리테이너는 세라믹 또는 고분자 소재의 원통 형태를 갖는 내부보강 실린더(4)와 실린더 리테이너(5)를 강구 사이에 위치시키고, 베어링 양 폭면으로 측면 리테이너(6)를 사용하여 볼베어링의 리테이너 포켓을 형성하며, 두개의 스테인레스강 재질의 측면 보강링(7)으로 원주방향 강성을 제공하도록 구성된다. Retainers for ball bearings have internal reinforcing cylinders (4) and cylinder retainers (5) having a cylindrical shape made of ceramic or polymer material between steel balls, and retainer pockets of ball bearings using side retainers (6) on both bearing surfaces. And, it is configured to provide the circumferential rigidity with the two stainless steel side reinforcement ring (7).

볼베어링에서 강구는 분산하중의 크기, 치수 상호차 등의 요인으로 인해 공전 속도가 균일하지 않으며, 이로 인하여 강구 간 상호 간섭이 발생하고 윤활 조건 이 나쁠 경우에는 한쪽으로의 쏠림 현상도 발생한다. 3개 이상의 강구가 상호 간섭하거나 강구 전체의 쏠림이 발생하면 강구는 원활하게 회전할 수 없어 파손이 발생한다. 이를 방지하기 위하여 본 발명에서는 리테이너의 원주 강성을 크게 증가시켜 강구 간 상호 간섭을 방지하였는데 이를 자세히 설명하면 다음과 같다. In ball bearings, the ball speed is not uniform due to factors such as the size of the distributed load and the dimensional difference, which results in mutual interference between the balls, and in the case of poor lubrication conditions, the ball is pulled to one side. If three or more steel balls interfere with each other or the entire steel ball is pulled out, the steel balls cannot rotate smoothly, causing damage. In order to prevent this, in the present invention, the circumferential rigidity of the retainer is greatly increased to prevent mutual interference between steel balls.

도 3에 보이는 바와 같이 실린더 리테이너(5)와 내부보강 실린더(4)는 강구 사이사이에 위치하며, 측면 리테이너(6)와 스테인리스강으로 제작된 측면 보강링(7)이 양쪽 폭방향에서 조립되고 리테이너 결합기구(8)에 의해 최종 체결된다. 볼베어링에서 강구의 공전 속도가 변화하게 되면 강구가 리테이너 포켓을 밀거나 리테이너 포켓에 의해 밀리게 되는 상호 간섭을 하게 되는데, 이 때 리테이너 포켓 간 강성이 부족하게 되면 리테이너의 원주 방향 변형이 발생하게 되고, 이로 인해 3개 이상의 강구가 상호 간섭을 하게 된다. 본 발명에서는 리테이너 포켓의 역할을 하고 있는 실린더 리테이너가 강인한 측면 보강링에 의해 원주 방향으로 고정되어 리테이너 전체의 원주 방향 변형이 방지되기 때문에 인접한 3개 이상의 강구 간 상호 간섭은 발생하지 않는다. 리테이너의 원주 방향 강성은 측면 보강링(7)과 내부 보강 실린더(4)에서 제공되며, 실린더 리테이너(5)와 측면 리테이너(6)는 보조 역할을 수행한다.As shown in FIG. 3, the cylinder retainer 5 and the internal reinforcement cylinder 4 are located between the steel balls, and the side retainer 6 and the side reinforcement ring 7 made of stainless steel are assembled in both width directions. Final fastening by retainer coupling mechanism 8. When the ball ball's idle speed changes, the steel balls interfere with each other by pushing the retainer pockets or by the retainer pockets.At this time, when the rigidity between the retainer pockets is insufficient, the circumferential deformation of the retainers occurs. This causes three or more steel balls to interfere with each other. In the present invention, since the cylinder retainer serving as the retainer pocket is fixed in the circumferential direction by a strong side reinforcement ring to prevent the circumferential deformation of the entire retainer, mutual interference between three or more adjacent steel balls does not occur. The circumferential stiffness of the retainer is provided in the side reinforcement ring 7 and the internal reinforcement cylinder 4, with the cylinder retainer 5 and the side retainer 6 playing an auxiliary role.

상기 실린더 리테이너(5)는 강구 사이 사이에 위치하여 강구 간의 간섭을 방지하여 강구의 원활한 회전을 보장한다. 특히 실린더 형상으로 구성되어 강구와 접촉 시에 점접촉을 하게 되어 마찰력이 감소되며, 세라믹 또는 내마모성이 우수한 고분자 소재를 사용하여 마찰력을 더욱 감소시키도록 한다. The cylinder retainer 5 is positioned between the steel balls to prevent interference between the steel balls to ensure smooth rotation of the steel balls. In particular, the cylindrical shape is in contact with the steel ball is in contact with the friction force is reduced, by using a ceramic or polymer material having excellent wear resistance to further reduce the friction force.

또한 상기 실린더 리테이너(5)는 세라믹 또는 고분자 소재를 사용하게 되므로 강성이 부족하여 강구와 접촉되는 하중을 지지할 수 없으므로 내부보강 실린더(4)가 접촉하중을 지지할 수 있도록 한다. 특히 실린더 리테이너는 내부보강 실린더에 대해 자유롭게 회전할 수 있어 강구와 실린더 리테이너 부재 간에는 구름 접촉이 발생하도록 한다.In addition, since the cylinder retainer 5 uses a ceramic or polymer material, the inner reinforcement cylinder 4 can support the contact load because it lacks rigidity and cannot support a load in contact with the steel ball. In particular, the cylinder retainer can rotate freely with respect to the internal reinforcement cylinder so that rolling contact occurs between the steel ball and the cylinder retainer member.

상기 측면 리테이너(6)는 실린더 리테이너(5)와 동일한 소재로 제작되며 실린더 리테이너(5)와 함께 리테이너 포켓을 형성한다. 측면 리테이너(6)는 폭방향으로는 강구에 의해 안내되며, 반경방향으로 베어링 내륜(2) 또는 베어링 외륜(1)에 의해 안내되어, 전체 리테이너의 안정된 공전을 보장한다. The side retainer 6 is made of the same material as the cylinder retainer 5 and together with the cylinder retainer 5 forms a retainer pocket. The side retainers 6 are guided by steel balls in the width direction and guided by the bearing inner ring 2 or the bearing outer ring 1 in the radial direction, to ensure stable idle of the entire retainer.

상기 실린더 리테이너(5)는 측면 보강링(7)에 의하여 원주 방향으로 일정한 간격을 유지하게 된다. 볼베어링에서는 인접한 두 강구의 간섭에 의해 회전 불량이 발생하기도 하지만, 불량한 윤활 조건 하에서는 인접한 세 강구가 서로 근접하여 간섭이 발생하게 되는데 이때 가운데 강구는 리테이너 부재를 사이에 두고 양 옆의 강구에 의해 압착되어 회전이 불가능하게 되는 현상이 심하게 발생한다. 이와 같은 문제점을 본 발명 측면 보강링(7)은 견고한 구조로 강구와 강구가 상호 간섭을 일으키지 않도록 사이 간격을 유지시키도록 구성된다.The cylinder retainer 5 is maintained at a constant interval in the circumferential direction by the side reinforcement ring (7). In ball bearings, rotational failure may occur due to interference between two adjacent steel balls, but under poor lubrication conditions, three adjacent steel balls may be in close proximity to each other, where the middle steel balls are crimped by steel balls adjacent to each other with retainer members interposed therebetween. The phenomenon that the rotation is impossible occurs badly. In the present invention, the side reinforcement ring 7 is configured to maintain a gap between the steel ball and the steel ball so as not to cause mutual interference.

리테이너 구성품은 도 1과 같이 배치된 후 리벳 등의 리테이너 결합기구(8)를 이용하여 체결한다.The retainer components are arranged as shown in FIG. 1 and then fastened using retainer coupling mechanisms 8 such as rivets.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다. The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

상기한 바와 같이 본 발명은 저점도 유체로 윤활되는 환경에서도 사용 가능한 볼베어링이 개발됨으로서 안정성과 신뢰성이 획기적으로 개선된 기기 설계 개념 구현이 가능하게 되었다는 장점이 있어 산업상의 이용이 기대되는 발명이다.As described above, the present invention is an invention that is expected to be used in the industry because the ball bearing which can be used even in an environment lubricated with a low viscosity fluid has been developed, thereby enabling the implementation of the concept of a device design with improved stability and reliability.

<참고문헌><References>

본 발명에 따른 볼베어링의 마찰력 저감 효과에 대해서는 그 시험 결과가 연구논문으로 발표되었음. [이재선, 최순, 김지호, 박근배, 지성균, "수윤활 볼베어링의 리테이너 설계 특성," 한국윤활학회지, Vol. 21, No. 6, 2005]The test results of the frictional force reduction effect of the ball bearing according to the present invention were published in the research paper. [Jae-Sun Lee, Soon-Soon, Ji-Ho Kim, Geun-Bae Park, Sung-Kyun Ji, "Retainer Design Characteristics of Water-lubricated Ball Bearings," Journal of the Korean Society of Lubrication Sciences, Vol. 21, No. 6, 2005]

Claims (5)

볼베어링 외륜(1)과; 볼베어링 외륜의 내부에 설치된 볼베어링 내륜(2)과; 상기 볼베어링 외륜과 내륜 사이에 삽입된 다수의 강구(3)와; 강구와 강구 사이에 설치된 리테이너를 포함하여 구성된 볼베어링에 있어서,A ball bearing outer ring 1; A ball bearing inner ring 2 provided inside the ball bearing outer ring; A plurality of steel balls 3 inserted between the ball bearing outer ring and the inner ring; In the ball bearing comprising a steel ball and a retainer installed between the steel ball, 상기 강구와 강구 사이에는, 내부에 내부보강 실린더(4)가 삽입 설치된 실린더 리테이너(5)가 설치되고, 강구의 양 폭면으로는 측면 리테이너(6)가 형성되어 볼베어링의 리테이너 포켓을 형성하며, 강구의 양측면에 설치된 측면 리테이너(6)의 양측에서 바깥쪽에 측면 보강링(7)이 설치되어 실린더 리테이너(5)를 원주 방향으로 견고하고 균일하게 위치토록 구성하여 강구 간 상호 간섭을 방지하도록 한 것을 특징으로 하는 저마찰 볼베어링.Between the steel ball and the steel ball, a cylinder retainer 5 having an internal reinforcement cylinder 4 inserted therein is installed, and side retainers 6 are formed on both width surfaces of the steel ball to form retainer pockets of ball bearings. Side reinforcement rings (7) are installed on both sides of the outer side retainers (6) installed on both sides of the outer side of the cylinder retainer (5) is configured to be firmly and uniformly positioned in the circumferential direction to prevent mutual interference between steel balls Friction ball bearing made with. 제 1 항에 있어서,The method of claim 1, 상기 실린더 리테이너(5)는 강구(3)와는 점접촉을 하고, 내부보강 실린더(4)와는 미끄럼접촉을 하도록 구성한 것을 특징으로 하는 저마찰 베어링.The cylinder retainer (5) is a low friction bearing, characterized in that configured to make a point contact with the steel ball (3), the sliding contact with the internal reinforcing cylinder (4). 제 1 항에 있어서,The method of claim 1, 상기 측면 리테이너(6)는 실린더 리테이너(5)와 동일한 소재로 제작된 것을 특징으로 하는 저마찰 베어링.Low friction bearing, characterized in that the side retainer (6) is made of the same material as the cylinder retainer (5). 제 1 항에 있어서,The method of claim 1, 상기 측면 보강링은 스테인레스강 재질로 이루어진 것을 특징으로 하는 저마찰 베어링.The side reinforcing ring is a low friction bearing, characterized in that made of stainless steel material. 제 1 항에 있어서,The method of claim 1, 상기 내부보강 실린더(4)는 세라믹 또는 고분자 소재 중에서 선택된 하나의 소재로 이루어진 원통 형태를 갖는 것을 특징으로 하는 저마찰 볼베어링The internal reinforcing cylinder (4) is a low friction ball bearing, characterized in that having a cylindrical shape made of one material selected from ceramic or polymer material
KR1020060012229A 2006-02-08 2006-02-08 Low friction ball bearing KR100664848B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060012229A KR100664848B1 (en) 2006-02-08 2006-02-08 Low friction ball bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060012229A KR100664848B1 (en) 2006-02-08 2006-02-08 Low friction ball bearing

Publications (1)

Publication Number Publication Date
KR100664848B1 true KR100664848B1 (en) 2007-01-03

Family

ID=37866946

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060012229A KR100664848B1 (en) 2006-02-08 2006-02-08 Low friction ball bearing

Country Status (1)

Country Link
KR (1) KR100664848B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104565073A (en) * 2014-12-01 2015-04-29 江苏南方轴承股份有限公司 Roller bearing retainer
CN108843692A (en) * 2018-08-24 2018-11-20 常州光洋轴承股份有限公司 Novel clutch bearing steel ball equal division device
CN114576271A (en) * 2022-03-16 2022-06-03 洛阳Lyc轴承有限公司 Metal reinforced retainer for liquid oxygen pump main shaft bearing and preparation process thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6474321A (en) * 1987-08-14 1989-03-20 Honeywell Inc Bearing
KR910001272A (en) * 1989-06-16 1991-01-30 임명화 Method and apparatus for reducing friction of rolling bearings

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6474321A (en) * 1987-08-14 1989-03-20 Honeywell Inc Bearing
KR910001272A (en) * 1989-06-16 1991-01-30 임명화 Method and apparatus for reducing friction of rolling bearings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104565073A (en) * 2014-12-01 2015-04-29 江苏南方轴承股份有限公司 Roller bearing retainer
CN108843692A (en) * 2018-08-24 2018-11-20 常州光洋轴承股份有限公司 Novel clutch bearing steel ball equal division device
CN108843692B (en) * 2018-08-24 2023-12-12 常州光洋轴承股份有限公司 Steel ball equal dividing device for clutch bearing
CN114576271A (en) * 2022-03-16 2022-06-03 洛阳Lyc轴承有限公司 Metal reinforced retainer for liquid oxygen pump main shaft bearing and preparation process thereof

Similar Documents

Publication Publication Date Title
US10859113B2 (en) Bearing arrangement for fluid machinery application
US7070334B2 (en) Ball Bearing
US9297414B2 (en) Bearing unit for fluid machinery application
US20120189235A1 (en) Bearing race for a rolling-element bearing
EP2469110B1 (en) Sealing device and rolling bearing device provided with sealing device
US11486444B2 (en) Bearing with at least one sealing element and at least one adjusting shim for axially displacing said sealing element
KR100664848B1 (en) Low friction ball bearing
JP2007239993A (en) Pre-loaded bearing device
TWI708018B (en) A fluid hydrodynamic bearing and cam mechanism having the same
JP2018159392A (en) Rolling bearing
CN102425601A (en) Three-ring bearing with cylindrical rollers used as inner and outer assemblies
JP2008121820A (en) Seal device for rolling bearing
JPWO2006098169A1 (en) Solid lubricated roller bearing
JP6275433B2 (en) Solid lubricated rolling bearing
JP2005321006A (en) Rolling bearing device
JP7171687B2 (en) Strain wave gearing and bearing member for strain wave gearing
CN117249170B (en) Motor bearing unit with oil leakage prevention lubrication sealing structure
JP2006125604A (en) Thrust roller bearing
KR100471553B1 (en) A Segmented Pin Type Journal Bearing for Water Lubricated Canned Motor Pump
JP2011112201A (en) Ball bearing
CN112714833B (en) Spindle device
JP2006300257A (en) Rolling bearing
Molotnikov et al. Shaft and Axle Supports
JP2005048847A (en) Ball screw integrated direct acting guide unit
JP5363304B2 (en) Full complement cylindrical roller bearings

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20111010

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20121011

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee