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KR100213921B1 - Assembly method of hemispherical bearing - Google Patents

Assembly method of hemispherical bearing Download PDF

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Publication number
KR100213921B1
KR100213921B1 KR1019970029360A KR19970029360A KR100213921B1 KR 100213921 B1 KR100213921 B1 KR 100213921B1 KR 1019970029360 A KR1019970029360 A KR 1019970029360A KR 19970029360 A KR19970029360 A KR 19970029360A KR 100213921 B1 KR100213921 B1 KR 100213921B1
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South Korea
Prior art keywords
floating member
fixed shaft
hemispherical
floating
bushing
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KR1019970029360A
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Korean (ko)
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KR19990005187A (en
Inventor
우기명
김영일
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윤종용
삼성전자주식회사
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Priority to KR1019970029360A priority Critical patent/KR100213921B1/en
Publication of KR19990005187A publication Critical patent/KR19990005187A/en
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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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/02—Assembling sliding-contact bearings
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/52—Positive connections with plastic deformation, e.g. caulking or staking

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

본 발명은 반구형 베어링의 조립방법에 관한 것으로, 반구 베어링의 부상부재와 부싱의 간극을 조절하는 스페이서를 사용하지 않고, 부상부재의 위치를 조정시킨 후 고정용 지그(Jig)를 사용하여 고정축에 결합할 수 있도록 하는 반구형 베어링의 조립방법에 관한 것이다.The present invention relates to a method of assembling a hemispherical bearing, and does not use a spacer for adjusting the gap between the floating member and the bushing of the hemisphere bearing, and after adjusting the position of the floating member, a fixing jig is used to fix the position of the floating member. It relates to a method of assembling a hemispherical bearing to be able to engage.

이를 위한 본 발명에 따른 반구형 베어링의 조립방법은, 고정축에 대칭되게 결합되는 반구형상의 제1, 2 부상부재 상면에 원주방향의 홈을 형성하는 단계와, 상기 고정축에 제1, 2 부상부재를 대칭되게 결합시킨 후, 고정용 지그를 상기 홈에 장착하여 상기 고정축에 상기 제1, 2 부상부재가 스테이킹(Staking)방법으로 고정되도록 하는 단계로 된다.The method of assembling a hemispherical bearing according to the present invention for this purpose, forming a circumferential groove on the upper surface of the hemispherical first, second floating member is symmetrically coupled to the fixed shaft, and the first, second floating member on the fixed shaft After symmetrically coupled to the mounting jig for mounting in the groove to the first and the second floating member is fixed to the fixed shaft by a staking (staking) method.

Description

반구형 베어링의 조립방법Assembly method of hemispherical bearing

본 발명은 반구형 베어링의 조립방법에 관한 것으로, 더욱 상세하게는 반구 베어링의 부상부재와 부싱의 간극을 조절하는 스페이서를 사용하지 않고, 부상부재의 위치를 조정시킨 후 고정용 지그(Jig)를 사용하여 고정축에 결합할 수 있도록 하는 반구형 베어링의 조립방법에 관한 것이다.The present invention relates to a method for assembling a hemispherical bearing, and more particularly, without using a spacer for adjusting the gap between the floating member and the bushing of the hemispherical bearing, and using a fixing jig after adjusting the position of the floating member. It relates to an assembly method of the hemispherical bearing to be coupled to the fixed shaft.

최근 들어 정보, 컴퓨터 산업의 급격한 발달로 각종 기기를 구동시키는데 필요로 하는 구동모터들, 예를 들면, 레이저 프린터의 폴리건 미러 구동장치, 하드 디스크의 스핀들모터, VCR의 헤드 구동모터 등은 기기의 특성상 보다 많은 데이터의 검색 및 저장, 재생을 단축된 시간에 수행하기 위해서는 축 흔들림이나 축 떨림 없는 고 정밀, 초고속 회전 성능을 요구하고 있다. 이에 따라 구동모터의 축 흔들림이나 축 진동을 억제하며 안정적으로 고속회전 하는 구동모터의 개발과 함께 이와 같은 모터 회전을 가능하게 하는 동압형 유체 베어링장치의 다양한 형태에 대하여 연구 개발이 추진되고 있다.Recently, due to the rapid development of information and computer industry, drive motors required to drive various devices, such as polygon mirror driving device of laser printer, spindle motor of hard disk, head drive motor of VCR, etc. In order to search, store, and play more data in a shorter time, high precision and ultra-fast rotational performance without shaft shaking or shaft shaking is required. Accordingly, research and development are being conducted on various types of dynamic pressure fluid bearing devices that enable the motor rotation as well as the development of a drive motor that stably rotates at high speed while suppressing shaft shaking and shaft vibration of the drive motor.

그리고, 이와 같은 동압형 유체베어링들 중 특히, 레이디얼 하중과 드러스트 하중을 동시에 지지하며 초고속 회전에 적합한 동압형 유체베어링장치인 반구 베어링의 연구 개발이 활발하게 진행되고 있다.Further, among these dynamic fluid bearings, research and development of hemisphere bearings, which are dynamic fluid bearing devices suitable for ultra high speed rotation while simultaneously supporting radial loads and thrust loads, are being actively conducted.

이와 같은 반구 베어링이 적용된 레이저 프린터의 폴리건 미러 구동장치를 첨부된 도 1에 의해 상세히 설명하면 다음과 같다.The polygon mirror driving apparatus of the laser printer to which the hemisphere bearing is applied will be described in detail with reference to FIG. 1.

도 1은 레이저 프린터의 폴리건 미러 구동장치에 적용된 반구형 베어링장치의 주요구성을 나타내는 단면도로서, 전술한 폴리건 미러 구동장치는 크게 보아 폴리건 미러(10)의 회전 중심인 고정축(20)과, 이 고정축(20)에 진구도가 높은 반구형상의 부상부재(30)(40) 및, 부상부재(30)(40)의 레이디얼 하중 및 드러스트 하중을 지지하는 부싱(50)과, 구동장치인 모터(60) 및 허브(70), 하부 하우징(80)등으로 구성되어 있다.1 is a cross-sectional view showing a main configuration of a hemispherical bearing device applied to a polygon mirror driving device of a laser printer. The polygon mirror driving device described above has a fixed shaft 20, which is a rotation center of the polygon mirror 10, and the fixed shaft 20. As shown in FIG. Hemispherical floating members 30 and 40 having a high sphericity on the shaft 20, a bushing 50 for supporting radial loads and thrust loads of the floating members 30 and 40, and a motor as a driving device. 60, the hub 70, the lower housing 80, and the like.

전술한 폴리건 미러(10)와 고정축(20) 및, 부상부재(30)(40)와 부싱(50)의 결합관계를 살펴보면, 하부 하우징(80)에는 부상부재(30)(40)가 고정된 고정축(20)이 결합되어 있고, 부싱(50)의 외주면에는 폴리건 미러(10) 및 스테이터 모터(60)가 설치되도록 허브(70)가 압입되어 있어, 결과적으로 부상부재(30)(40) 및 고정축(20)은 고정되어 있으며, 부싱(50)은 고정축(20)에 대하여 회전할 수 있도록 되어 있다.Looking at the relationship between the polygon mirror 10 and the fixed shaft 20, and the floating member 30, 40 and the bushing 50 described above, the floating member 30, 40 is fixed to the lower housing 80 Fixed shaft 20 is coupled, and the hub 70 is press-fitted to the outer circumferential surface of the bushing 50 so that the polygon mirror 10 and the stator motor 60 are installed, and as a result, the floating member 30 (40) ) And the fixed shaft 20 is fixed, the bushing 50 is to be able to rotate about the fixed shaft (20).

한편, 전술한 부상부재(30)(40)의 레이디얼 하중 및 드러스트 하중을 지지하는 부싱(50)은, 소정 직경을 갖는 속이 찬 원통 형상의 봉 중심에, 고정축(20) 보다 큰 직경으로 관통공을 형성한 다음, 봉의 양단에는 부상부재(30)(40)의 곡률과 동일한 반구홈을 형성하고, 부싱(50)의 관통공에는 부상부재(30)(40)와 반구홈 사이의 간극 간격을 조정하기 위한 스페이서(90)가 삽입된다.On the other hand, the bushing 50 supporting the radial load and the thrust load of the above-mentioned floating members 30 and 40 has a diameter larger than that of the fixed shaft 20 at the center of a rod of a cylindrical shape having a predetermined diameter. After forming the through hole, the both ends of the rod to form a hemisphere groove equal to the curvature of the floating member 30, 40, the through hole of the bushing 50 between the floating member 30, 40 and the hemisphere groove Spacers 90 are inserted for adjusting the gap spacing.

이와 같이 구성된 반구형 베어링장치는, 상,하부 부상부재(30)(40)와 부싱(50)의 반구홈 사이에 일정한 간극을 유지하기 위하여, 상,하부 부상부재(30)(40) 사이에 스페이서(90)가 개재되는데, 스페이서(90)의 정밀한 가공이 매우 까다롭고, 부상부재(30)(40)들의 장착이 매우 정밀한 조립 과정이 요구된다.The hemispherical bearing device configured as described above has a spacer between the upper and lower floating members 30 and 40 to maintain a constant gap between the upper and lower floating members 30 and 40 and the hemisphere groove of the bushing 50. 90 is interposed, the precise processing of the spacer 90 is very demanding, and the assembly of the floating member 30, 40 is very precise assembly process is required.

그러나 이와 같은 종래의 반구형 베어링은, 상부 부상부재(30)와 하부 부상부재(40) 사이에 스페이서(90)를 이용하여 수 ㎛의 간극을 유지하여야 하므로, 스페이서(90)는 매우 정밀한 치수로 가공되어야 하며, 따라서 스페이서(90) 제작에 많은 시간과 비용이 소요되며, 스페이서(90)의 치수 불량이 발생할 경우 반구형 베어링의 성능이 크게 저하되는 문제점이 있었다.However, such a conventional hemispherical bearing has to maintain a gap of several micrometers by using the spacer 90 between the upper floating member 30 and the lower floating member 40, so that the spacer 90 is processed to a very precise dimension. Therefore, it takes a lot of time and cost to manufacture the spacer 90, there was a problem that the performance of the hemi-spherical bearing is greatly reduced when the dimensional defect of the spacer 90 occurs.

따라서, 본 발명은 전술한 문제점을 해결하기 위한 것으로서, 본 발명의 목적은, 반구형 베어링장치의 부싱에 형성한 상하부 부상부재의 간극 간격을 조정하는 스페이서를 사용하지 않고, 고정용 지그를 사용하여 부상부재를 고정축에 고정할 수 있도록 하는 반구형 베어링의 조립방법을 제공하는 것에 있다.Accordingly, the present invention is to solve the above-mentioned problems, the object of the present invention, without using a spacer for adjusting the gap gap of the upper and lower floating member formed in the bushing of the hemispherical bearing device, using a fixing jig It is an object of the present invention to provide a method for assembling a hemispherical bearing for fixing a member to a fixed shaft.

도 1은 종래의 레이저 프린터의 폴리건 미러 구동장치에 적용된 반구형 베어링장치의 주요구성을 나타내는 단면도,1 is a cross-sectional view showing the main configuration of a hemispherical bearing device applied to a polygon mirror driving device of a conventional laser printer;

도 2는 본 발명에 의한 반구형 베어링의 단면도,2 is a cross-sectional view of a hemispherical bearing according to the present invention,

도 3a와 3b는 본 발명에 의한 고정축에 반구형의 부상부재를 고정하는 방법을 나타낸 단면도이다.3A and 3B are cross-sectional views illustrating a method of fixing a hemispherical floating member to a fixed shaft according to the present invention.

* 도면의 주요부분에 사용된 부호의 설명* Explanation of symbols used in the main part of the drawing

100 : 고정축 110 : 제1 부상부재100: fixed shaft 110: first floating member

120 : 제2 부상부재 130 : 부싱120: second floating member 130: bushing

전술한 본 발명의 목적은, 고정축에 대칭되게 결합되는 반구형상의 제1, 2 부상부재 상면에 원주방향의 홈을 형성하는 단계와, 상기 고정축에 제1, 2 부상부재를 대칭되게 결합시킨 후, 고정용 지그를 상기 홈에 장착하여 상기 고정축에 상기 제1, 2 부상부재가 스테이킹(Staking)방법으로 고정되도록 하는 단계로 되는 것을 특징으로 하는 반구형 베어링의 조립방법을 제공함에 의해 달성된다.The object of the present invention described above is to form a groove in the circumferential direction on the upper surface of the hemispherical first and second floating members that are symmetrically coupled to the fixed shaft, and to symmetrically couple the first and second floating members to the fixed shaft. Thereafter, by mounting a fixing jig to the groove to achieve the first and second floating member to the fixed shaft fixed by the staking method (Staking) achieved by providing a method of assembling a semi-spherical bearing do.

본 발명의 바람직한 특징에 의하면, 상기 고정축과 상기 제1, 2 부상부재간에 완전하게 고정되도록, 상기 홈과 대향되게 상기 고정축에 걸림홈을 형성한다.According to a preferred feature of the present invention, a locking groove is formed in the fixed shaft to face the groove so as to be completely fixed between the fixed shaft and the first and second floating members.

본 발명의 다른 특징과 효과는, 이하 첨부 도면을 참조하여 상세히 설명할 본 발명의 바람직한 실시예에 의해 더욱 명확해질 것이다.Other features and effects of the present invention will be further clarified by the preferred embodiments of the present invention which will be described in detail below with reference to the accompanying drawings.

첨부도면 도 2는 본 발명에 의한 반구형 베어링의 단면도, 도 3은 본 발명에 의한 고정축에 반구형의 부상부재를 고정하는 방법을 나타낸 단면도이다.2 is a cross-sectional view of a hemispherical bearing according to the present invention, Figure 3 is a cross-sectional view showing a method of fixing a hemispherical floating member to a fixed shaft according to the present invention.

본 실시예에 의한 반구형 베어링은, 도 2 및 도 3에 도시된 바와 같이, 하우징에 고정된 고정축(100)과, 이 고정축(100)의 외주연과 대응되어 삽입될 수 있는 축공(115)(125)을 형성한 반구형상의 제1, 2 부상부재(110)(120)와, 이 제1, 2 부상부재(110)(120)와 결합되어 고정축(100)을 중심으로 소정 속도로 회전되는 부싱(130)으로 구비된다. 전술한 제1, 2 부상부재(110)(120)의 상면에는 축공(115)(125)을 중심으로 원주방향으로 파여지는 홈(140)을 형성한다.2 and 3, the hemispherical bearing according to the present embodiment has a fixed shaft 100 fixed to the housing and a shaft hole 115 which can be inserted corresponding to the outer circumference of the fixed shaft 100. ) 125 and hemispherical first and second floating members (110, 120) and the first and second floating members (110, 120) are coupled to a predetermined speed around the fixed shaft (100) It is provided with a bushing 130 is rotated. The upper surface of the above-mentioned first and second floating members 110 and 120 forms a groove 140 which is dug in the circumferential direction about the shaft holes 115 and 125.

그리고, 고정축(100)과 제1, 2 부상부재(110)(120)간에 개략적으로 도시된 지그(160)를 통하여 고정시 완전하게 고정이 이루어 지도록 고정축(100) 외주연에 제1, 2 부상부재(110)(120)의 홈(140)(145)과 대향되게 걸림홈(150)을 형성한다.In addition, the fixing shaft 100 and the first and second floating members 110 and 120 through the jig 160 schematically shown in the fixing when the fixing is completely made to the outer periphery of the fixed shaft 100 to the first, 2 to form a locking groove 150 to face the grooves 140 and 145 of the floating member (110, 120).

여기서, 고정축(100)에 제1, 2 부상부재(110)(120)와 부싱(130)을 조립하는 방법은, 고정축(100)에 제1 부상부재(110)를 고정하는 제1 단계와, 제1 단계에 부싱(130)을 위치 시키고, 제2 부상부재(120)를 결합 고정하는 제2 단계로 나누어지는데, 각 단계별로 설명하면 다음과 같다.Here, the method of assembling the first and second floating members 110 and 120 and the bushing 130 on the fixed shaft 100 is a first step of fixing the first floating member 110 to the fixed shaft 100. And, to place the bushing 130 in the first step, and divided into a second step of fixing and fixing the second floating member 120, each step will be described as follows.

먼저, 고정축(100)에 대응되는 제1 부상부재(110)의 축공(115)을 통하여 고정축(100)에 제1 부상부재(110)를 삽입한다. 이 때, 제1 부상부재(110)는 고정축(100)의 하부측에 위치시키고, 고정용 지그(160)를 홈(140)에 장착한 후에, 도 3에 도시된 화살표 방향으로 지그(160)를 통해 스테이킹 방법으로 힘을 주어 제1 부상부재(110)가 고정축(100)에 고정되도록 한다. 여기서, 홈(140)과 대향되는 고정축(100)에는 걸림홈(150)이 형성되어 있으므로, 제1 부상부재(110)의 내주연 일측부가 걸림홈(150)에 걸리게 되어 유동이 발생하지 않게 된다.First, the first floating member 110 is inserted into the fixed shaft 100 through the shaft hole 115 of the first floating member 110 corresponding to the fixed shaft 100. At this time, the first floating member 110 is located on the lower side of the fixed shaft 100, and after mounting the fixing jig 160 to the groove 140, jig 160 in the direction of the arrow shown in FIG. The first floating member 110 is fixed to the fixed shaft 100 by applying a force through the staking method. Here, since the locking groove 150 is formed in the fixed shaft 100 facing the groove 140, one side of the inner circumference of the first floating member 110 is caught by the locking groove 150 so that no flow occurs. do.

한편, 고정축(100)에 제1 부상부재(110)를 고정하는 스테이킹 방법은 각 방향에서 동시에 힘이 작용되면서 이루어지도록 하여, 고정시 균형을 유지할 수 있도록 한다.On the other hand, the staking method for fixing the first floating member 110 to the fixed shaft 100 is to be made while the force is applied at the same time in each direction, to maintain the balance at the time of fixing.

그리고, 제1 부상부재(110)의 외주연과 완전하게 밀착될 수 있도록 부싱(130)을 제1 부상부재(110)의 상부측에 위치시킨다. 이 때, 부싱(130)은 제1 부상부재(110)를 수용하는 상태를 유지하며, 부싱(130)의 내주연은 제1 부상부재(110)의 외주연과 대응되도록 형성되어 있다. 여기서, 또 다른 지그를 이용하여 부싱(130)을 소정 간극 높이로 위치 이동 시킨 후, 제1 부상부재(110)와 대칭되도록 제2 부상부재(120)의 축공(125)를 고정축(100)에 삽입시켜 제2 부상부재(120)가 고정축(100)에 결합되도록 한다.Then, the bushing 130 is positioned on the upper side of the first floating member 110 to be in close contact with the outer circumference of the first floating member 110. At this time, the bushing 130 maintains a state in which the first floating member 110 is accommodated, and the inner circumferential edge of the bushing 130 is formed to correspond to the outer circumferential edge of the first floating member 110. Here, after the bushing 130 is moved to a predetermined gap height by using another jig, the shaft hole 125 of the second floating member 120 is symmetrical with the first floating member 110 to fix the shaft 100. Inserted into the second floating member 120 to be coupled to the fixed shaft (100).

이 때, 제2 부상부재(120)와 부싱(130)은 밀착 대응되고, 제1 부상부재(110)와 부싱(130) 일정한 간극을 유지하게 되며, 제2 부상부재(120)의 홈(145)에 고정용 지그를 위치시켜, 전술한 제1 부상부재(110)의 고정방법과 동일하게 고정한다. 전술한 제2 부상부재(120)의 홈(145)과 대향되는 고정축(100)의 외주연에도 걸림홈(150)을 형성하여 제2 부상부재(120)가 고정축(100)에 완전하게 고정되게 된다.At this time, the second floating member 120 and the bushing 130 is in close contact with each other, maintains a constant gap between the first floating member 110 and the bushing 130, the groove 145 of the second floating member 120 The fixing jig is positioned in the c) and is fixed in the same manner as the fixing method of the first floating member 110 described above. A locking groove 150 is also formed on the outer circumference of the fixed shaft 100 opposite to the groove 145 of the second floating member 120 so that the second floating member 120 is completely fixed to the fixed shaft 100. It will be fixed.

이상 설명한 바와 같이, 본 발명에 의한 반구형 베어링의 조립방법에 의하면, 제1 부상부재와 제2 부상부재를 조립하는 경우에 스페이서를 이용하지 않고, 지그를 이용한 스테이킹 방법으로 고정축에 제1, 2 부상부재를 간단하게 고정이 이루어져 반구형 베어링의 제작 원가가 절감되고, 제작시간이 단축되어 제품의 경쟁력이 상승되는 효과가 있다.As described above, according to the assembling method of the hemispherical bearing according to the present invention, when assembling the first floating member and the second floating member, the first shaft is fixed to the fixed shaft by a staking method using a jig without using a spacer. 2 Simple fixing of the floating member reduces the manufacturing cost of the hemispherical bearing, and the production time is shortened, thereby increasing the competitiveness of the product.

Claims (2)

고정축에 대칭되게 결합되는 반구형상의 제1, 2 부상부재 상면에 원주방향의 홈을 형성하는 단계와,Forming a circumferential groove on the upper surface of the hemispherical first and second floating members symmetrically coupled to the fixed shaft; 상기 고정축에 제1, 2 부상부재를 대칭되게 결합시킨 후, 고정용 지그를 상기 홈에 장착하여 상기 고정축에 상기 제1, 2 부상부재가 스테이킹(Staking)방법으로 고정되도록 하는 단계로 되는 것을 특징으로 하는 반구형 베어링의 조립방법.Symmetrically coupling the first and second floating members to the fixed shaft, and then mounting a fixing jig to the groove to fix the first and second floating members to the fixed shaft by a staking method. Assembly method of the hemispherical bearing, characterized in that. 제 1항에 있어서,The method of claim 1, 상기 고정축과 상기 제1, 2 부상부재간에 완전하게 고정되도록, 상기 홈과 대향되게 상기 고정축에 걸림홈을 형성하는 단계로 되는 것을 특징으로 하는 반구형 베어링의 조립방법.And a locking groove formed on the fixed shaft to face the groove so as to be completely fixed between the fixed shaft and the first and second floating members.
KR1019970029360A 1997-06-30 1997-06-30 Assembly method of hemispherical bearing KR100213921B1 (en)

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