JPS5923120A - Direct-acting ball bearing - Google Patents
Direct-acting ball bearingInfo
- Publication number
- JPS5923120A JPS5923120A JP13155882A JP13155882A JPS5923120A JP S5923120 A JPS5923120 A JP S5923120A JP 13155882 A JP13155882 A JP 13155882A JP 13155882 A JP13155882 A JP 13155882A JP S5923120 A JPS5923120 A JP S5923120A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- relay
- ring
- raceway
- rolling elements
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/068—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track
- F16C29/0683—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque
- F16C29/0685—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque with balls
- F16C29/0688—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque with balls whereby a sleeve surrounds the circulating balls and thicker part of the sleeve form the load bearing tracks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
Description
【発明の詳細な説明】
との発明は、軸、)、を直線運動する直動玉軸受、殊に
非常に小さな直径の軸にも適応するようにした直動玉軸
受に関する。DETAILED DESCRIPTION OF THE INVENTION The invention relates to a linear motion ball bearing that moves a shaft in a straight line, and in particular to a linear motion ball bearing that is adapted to a shaft with a very small diameter.
例えば特公昭41−1364号公報(第1図。For example, Japanese Patent Publication No. 41-1364 (Fig. 1).
第2図径照)に示されるように、複数組の負荷軌道lと
無負荷軌道2とを軸方向に貫設したスIJ −ブ3の前
記各軌道1.2の両端に、管体からなるU字形のサーキ
ュレータ4を取付けて、閉じられた長円形の複数の転動
体循環路を形成し、さらにその両端を側板6で固定して
、各循環路内の転動体5の転勤循環を自在ならしめた直
動玉軸受は公知である。As shown in FIG. A U-shaped circulator 4 is attached to form a plurality of closed oval rolling element circulation paths, and both ends thereof are fixed with side plates 6 to freely transfer and circulate the rolling elements 5 in each circulation path. Strained linear ball bearings are known.
ところがこのような従来のものは、転動体が、前記循環
路において循環移動する際、負荷をうけ九寸寸直接サー
キュレータに移11tl+ シ、或はサーキュレータか
ら直接負荷部に循環するために、その循環における摩擦
力が大きく、性能面に問題があった。壕だ従来の直動玉
軸受は、それが使用される軸径がせいぜい6間才でであ
って、それより小径の軸に適応するものがなかった。However, in such a conventional device, when the rolling elements circulate in the circulation path, they receive the load and transfer it directly to the 9-inch circulator, or directly from the circulator to the load section, so that there is a problem in the circulation. The frictional force was large and there were performance problems. Unfortunately, conventional direct-acting ball bearings can only be used with a shaft diameter of six inches at most, and there is nothing that can be used for shafts with smaller diameters.
一方、最近は、コンピュータ、電気製品等の分野におい
て、超小型、低摩擦力で、しかも安価な直線運動用ころ
がり軸受の需要が増大しつつある○この発明は、以上の
ような直動玉軸受において、低摩擦力で超小型化を可能
となし、高性能でしかも安価なものを提供することを目
的とするものである。On the other hand, recently, the demand for ultra-compact, low-friction, and inexpensive linear motion rolling bearings has been increasing in the fields of computers, electrical products, etc. This invention is based on the above-mentioned linear motion ball bearings. The purpose of this invention is to provide a high-performance and low-cost product that enables ultra-miniaturization with low frictional force.
実施例について説明すれば、第3図〜第8図において、
軸10の直径より僅かに大きい内径を有するスリーブ1
1に、転動体12を一部露出させて軸10に転接させか
つ転動体12を自在に転勤循環させる負荷軌道13と、
該軌道13よりも外径側に位置して転動体12との間に
僅かのすきまを形成し、該転動体12を自在に転勤循環
させる無負荷軌道14との複数組(少なくとも3組、実
施例では4組)を軸線と平行に貫通させて設け、さらに
スリーブ11の両端部に筒部15をそれぞれ形成する。To explain the embodiment, in FIGS. 3 to 8,
Sleeve 1 having an inner diameter slightly larger than the diameter of the shaft 10
1, a load track 13 that partially exposes the rolling elements 12 and brings them into rolling contact with the shaft 10, and freely transfers and circulates the rolling elements 12;
A plurality of sets (at least 3 sets, implemented) of a no-load track 14 which is located on the outer diameter side of the raceway 13 and forms a slight clearance between the raceway 13 and the rolling element 12 and freely transfers and circulates the rolling element 12. In the example, four pairs of sleeves 11 are provided to extend through the sleeve 11 in parallel with the axis, and cylindrical portions 15 are formed at both ends of the sleeve 11, respectively.
スリーブ11の両端の筒部15内に、それぞれ負荷軌道
13と無負荷軌道14とに連続して転動体12との間に
僅かのすきまを形成し、該転動体12を自在に転動させ
る中継軌道16.1蹄、前記負荷軌道13と無負荷軌道
140組と同数組軸方向に貫設した斜溝幅18を嵌合固
定する。そして少なくとも各負荷軌道13に連続する各
中継軌道16を、斜溝幅18の外端側、すなわち後述の
側輪19に接する端面側において、該軌道16の開口が
外径側に偏位するように軸線に対して僅かに傾ける。In the cylindrical portion 15 at both ends of the sleeve 11, a slight gap is formed between the rolling elements 12 and the loaded raceway 13 and the unloaded raceway 14, respectively, so that the rolling elements 12 can freely roll. The same number of tracks 16.1 and 140 sets of the loaded track 13 and the unloaded track are fitted and fixed with diagonal groove widths 18 extending in the axial direction. At least each relay raceway 16 that is continuous with each load raceway 13 is arranged so that the opening of the raceway 16 is deviated toward the outer diameter side at the outer end side of the diagonal groove width 18, that is, at the end face side in contact with a side wheel 19, which will be described later. tilt slightly with respect to the axis.
スリーブ11の両端の筒部15にはさらに、斜溝幅18
の軸方向外端に接し、対をなす中継軌道16.17にそ
れぞれ連続して、前記各軌道13゜14.16.17と
共同して長円形に閉じられた転動体12の循環路を形成
する半円弧状の循環溝20を、前記各軌道の組と同数設
けた側輪19を嵌合固定する。The cylindrical portion 15 at both ends of the sleeve 11 is further provided with a diagonal groove width 18.
in contact with the outer ends in the axial direction, respectively continuous with the pair of relay raceways 16.17, and forming a circulation path for the rolling elements 12 closed in an oval shape in cooperation with the respective raceways 13, 14, 16, and 17. The side wheels 19, which are provided with the same number of semicircular arc-shaped circulation grooves 20 as the respective sets of tracks, are fitted and fixed.
すなわち、スリーブ11の両端の筒部15に対レズ、各
々、斜溝幅18と側輪19とを位置決めして嵌合固定し
、閉じられた長円形の循環路内に配置した転動体12の
自在な転動循環を行わせるようにしたものであるが、ス
リーブ11、及び1対の斜溝輪18.1対の側輪19を
、スリーブとは別体の筒体内に前記と同様の配置で位置
決め固定してもよく、前記筒体に代えて、直動玉軸受が
組みつけられるハウジングを利用する構成としてもよい
。また斜溝輪I8と側輪19の内径は、スリーブ11の
内径と同一寸法とし、軸10に対し僅かのすき1を形成
する構成とするのがよい。That is, the cylindrical portions 15 at both ends of the sleeve 11 are fitted with the diagonal groove width 18 and the side wheels 19, respectively, and are fitted and fixed, and the rolling elements 12 are arranged in a closed oval circulation path. Although the sleeve 11 and the pair of diagonal groove rings 18 and the pair of side wheels 19 are arranged in a cylinder separate from the sleeve in the same manner as described above, Alternatively, instead of the cylindrical body, a housing to which a linear motion ball bearing is assembled may be used. Further, it is preferable that the inner diameters of the oblique groove ring I8 and the side ring 19 be the same as the inner diameter of the sleeve 11, and form a slight clearance 1 with respect to the shaft 10.
スリーブ11、斜溝輪18、及び側輪19は、そのいず
れか或は全部を、例えば炭素繊維等の強化材を配合した
合成樹脂材料、或はセラミック、焼結合金等により成形
することができ、その使用材料は、使用目的に合わせて
適宜選択する。Any or all of the sleeve 11, oblique groove ring 18, and side ring 19 can be formed from a synthetic resin material containing reinforcing material such as carbon fiber, ceramic, sintered alloy, or the like. The materials used are selected appropriately depending on the purpose of use.
この発明は以上のような構成であって、負荷軌道と無負
荷#1.;首とを有するスリーブの両端に、中継軌道を
形成した斜閏輪を配し、さらにその軸方向外端に半円形
の循環溝を有する側輪を配置したので、中継軌道の軸線
に対する傾き角度を任意に選択することにより、或は中
継軌道の軸方向長さを適宜定めることによって、転動体
が転接する軸の直径を、従来に比べて著るしく・J1径
にすることが可能となり、直動玉軸受の超小型化をきわ
めて容易に実現することができる。しかも前記斜溝輪の
中継軌道の軸線に対する傾き角度を小さく設定すること
によシ、負荷域から無負荷域へ、或はその逆方向の転動
体の循環移動をきわめてスムーズに無理なく行わせるこ
とができ、従来に比べて前記循環移動における摩擦力を
格段に軽減することができ、その構成がきわめて簡単で
、かつ高性能の直動玉軸受を提供することができる。The present invention has the above-described configuration, and includes a loaded track and an unloaded track #1. ; Since a diagonal ring with a relay raceway is arranged at both ends of the sleeve having a neck, and a side ring with a semicircular circulation groove is arranged at the outer end in the axial direction, the inclination angle of the relay raceway with respect to the axis is By arbitrarily selecting , or by appropriately determining the axial length of the relay raceway, it is possible to significantly increase the diameter of the shaft on which the rolling elements roll into contact, to the J1 diameter, compared to the conventional method. Ultra-miniaturization of linear motion ball bearings can be achieved extremely easily. Furthermore, by setting the inclination angle of the diagonal groove ring to the axis of the relay raceway to be small, the rolling elements can circulately move from the load area to the no-load area or in the opposite direction very smoothly and effortlessly. This makes it possible to significantly reduce the frictional force during the circulation movement compared to the conventional one, and to provide a linear motion ball bearing with an extremely simple structure and high performance.
壕だスリーブ、斜溝輪、側輪の加工も容易であり、管体
から成形したサーキュレータ等を必要としないので、そ
の価格をきわめて低順となしうる。The trench sleeve, diagonal groove ring, and side ring are easy to process, and there is no need for a circulator formed from a tubular body, so the price can be kept extremely low.
さらに、合成樹脂、セラミック等により前記各部材を成
形することにより、所要経費の削減と、軸受の軽量化と
を達成することができ、直セ11玉軸受の作動における
慣性力を著るしく小さくすることができる。Furthermore, by molding each of the above-mentioned members from synthetic resin, ceramic, etc., it is possible to reduce the required costs and reduce the weight of the bearing, and the inertia force during the operation of the direct-set 11-ball bearing can be significantly reduced. can do.
第1図は従来の直動玉軸受の第2図1−I線における横
断面図、第2図は第1図のIT−IT線における縦断面
図、第3図はこの発明の実施例の半部縦断面図、第4図
及び第5図は、それぞれ第3図の■−■線、■−■線に
おける横断面図、第6図。
第7図は、それぞれ第3図の■−■線、■−vll線か
らみた側輪、斜溝輪の側面図、第8図は第3図。
第4図中の■−■線に沿う縦断面図である。
10・・・軸、11・・・スリーブ、12・・・転動体
、13・・・負荷軌道、14・・・無負荷軌道、15・
・・筒部、16゜17・・・中継軌道、18・・・斜溝
輪、19・・・側輪、20・・・循環溝
出願人 光洋精工株式会社
dゞ“
第1図 第4図Fig. 1 is a cross-sectional view taken along line 1-I in Fig. 2 of a conventional linear motion ball bearing, Fig. 2 is a longitudinal sectional view taken along line IT-IT in Fig. 1, and Fig. 3 is a cross-sectional view of a conventional linear motion ball bearing taken along line IT-IT in Fig. 1. The half longitudinal cross-sectional views, FIGS. 4 and 5, are cross-sectional views taken along the lines ■--■ and ■--■ in FIG. 3, respectively, and FIG. 6. 7 is a side view of the side wheel and diagonal groove ring as seen from the ■-■ line and the ■-vll line of FIG. 3, respectively, and FIG. 8 is a side view of the diagonal groove ring. 5 is a longitudinal sectional view taken along the line ■-■ in FIG. 4. FIG. DESCRIPTION OF SYMBOLS 10... Shaft, 11... Sleeve, 12... Rolling element, 13... Load raceway, 14... No-load raceway, 15...
... Cylinder part, 16° 17 ... Relay track, 18 ... Diagonal groove ring, 19 ... Side ring, 20 ... Circulation groove Applicant: Koyo Seiko Co., Ltd. " Figure 1 Figure 4
Claims (1)
と、該軌道よシも外径側に位置して転動体を自在に転動
させる無負荷軌道との少なくとも3組を軸線と平行に貫
設したスリーブと、該スリーブの両端にそれぞれ配置し
、前記負荷軌道と無負荷軌道にそれぞれ連続して転動体
を自在に転動させる中継軌道を軸方向に貫設した斜溝輪
と、斜溝輪の軸方向外端に配置し、対をガす中継軌道に
それぞれ連続して、前記各軌道と共同し長円形に閉じら
れた転動体の循環路を形成する半円弧状の循環溝を設け
た側輪とを備え、斜溝輪の少なくとも前記各負荷軌道に
連続する各中継軌道を、該斜溝輪の側輪側端面で外径側
に偏位するように軸受の軸線に対して僅かに傾け、前記
各軌道と循環溝とが、閉じられた長円形の循環路内で転
動体の自在な転勤循環を行わせるように連続する如く・
前記スリーブと各斜溝輪及び側輪を一体的に位置決めし
て固定したことを特徴とする直動玉軸受(2)前記スリ
ーブが、その軸方向両端に、前記斜溝輪と側輪とをそれ
ぞれ嵌入して位置決め固定する筒部を備えだ特許請求の
範囲(1)記載の直動玉軸受 (3)前記スリーブ、斜溝輪、側輪の少なくともいずれ
かが・合成樹脂・セラミック、または焼結合金のいずれ
かにより成形されている特許請求の範囲(1)又は(2
)記載の直動玉軸受[Claims] (1) A loaded raceway in which the rolling elements are partially exposed and roll in contact with the shaft, and a non-loaded raceway in which the rolling elements are also located on the outer diameter side and the rolling elements freely roll. a sleeve in which at least three sets of A circulation path for rolling elements, which is disposed through the diagonal groove ring and is disposed at the outer end in the axial direction of the diagonal groove ring and is continuous with the relay raceway that connects the pair, is cooperating with each of the raceways and is closed in an oval shape. and a side ring provided with a semicircular circulation groove to form a semi-circular groove, and each relay raceway continuous to at least each of the load raceways of the diagonal groove ring is offset toward the outer diameter side at the end surface on the side wheel side of the diagonal groove ring. It is slightly tilted with respect to the axis of the bearing so that each raceway and the circulation groove are continuous so that the rolling elements are freely transferred and circulated within the closed oval circulation path.
A linear motion ball bearing (2) characterized in that the sleeve, each oblique groove ring and a side ring are integrally positioned and fixed. A linear motion ball bearing according to claim (1), wherein at least one of the sleeve, diagonal groove ring, and side ring is made of synthetic resin, ceramic, or sintered. Claims (1) or (2) molded from any of the bonded metals.
) Linear motion ball bearings listed in
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13155882A JPS5923120A (en) | 1982-07-27 | 1982-07-27 | Direct-acting ball bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13155882A JPS5923120A (en) | 1982-07-27 | 1982-07-27 | Direct-acting ball bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5923120A true JPS5923120A (en) | 1984-02-06 |
Family
ID=15060870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13155882A Pending JPS5923120A (en) | 1982-07-27 | 1982-07-27 | Direct-acting ball bearing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5923120A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61236920A (en) * | 1985-04-10 | 1986-10-22 | ドイツチエ シユタ−ル ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Ball sliding bearing |
DE3634980A1 (en) * | 1985-10-15 | 1987-05-14 | Hiroshi Teramachi | ROLLER BEARING WITH CONTINUOUS BALL GROOVE FOR KEY SHAFT |
JPS6338716A (en) * | 1986-07-30 | 1988-02-19 | Hiihaisuto Seiko Kk | Linear ball bearing |
JPS6474317A (en) * | 1987-09-16 | 1989-03-20 | Nippon Thompson Co Ltd | Ball spline bearing |
JPH0193298U (en) * | 1987-12-08 | 1989-06-19 | ||
JP2015090172A (en) * | 2013-11-05 | 2015-05-11 | ニッタ株式会社 | Linear guide device |
-
1982
- 1982-07-27 JP JP13155882A patent/JPS5923120A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61236920A (en) * | 1985-04-10 | 1986-10-22 | ドイツチエ シユタ−ル ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Ball sliding bearing |
JPH0369005B2 (en) * | 1985-04-10 | 1991-10-30 | Doitsuche Shutaaru Gmbh | |
DE3634980A1 (en) * | 1985-10-15 | 1987-05-14 | Hiroshi Teramachi | ROLLER BEARING WITH CONTINUOUS BALL GROOVE FOR KEY SHAFT |
JPS6338716A (en) * | 1986-07-30 | 1988-02-19 | Hiihaisuto Seiko Kk | Linear ball bearing |
JPS6474317A (en) * | 1987-09-16 | 1989-03-20 | Nippon Thompson Co Ltd | Ball spline bearing |
JPH0361046B2 (en) * | 1987-09-16 | 1991-09-18 | Nippon Thompson Co Ltd | |
JPH0193298U (en) * | 1987-12-08 | 1989-06-19 | ||
JP2015090172A (en) * | 2013-11-05 | 2015-05-11 | ニッタ株式会社 | Linear guide device |
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