JPH0643850B2 - Direct acting ball bearing unit with cage - Google Patents
Direct acting ball bearing unit with cageInfo
- Publication number
- JPH0643850B2 JPH0643850B2 JP62270009A JP27000987A JPH0643850B2 JP H0643850 B2 JPH0643850 B2 JP H0643850B2 JP 62270009 A JP62270009 A JP 62270009A JP 27000987 A JP27000987 A JP 27000987A JP H0643850 B2 JPH0643850 B2 JP H0643850B2
- Authority
- JP
- Japan
- Prior art keywords
- ball bearing
- balls
- linear motion
- cage
- bearing unit
- 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.)
- Expired - Lifetime
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
-
- 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
- F16C29/0614—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only
- F16C29/0616—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a shoe type bearing body, e.g. a body facing one side of the guide rail or track only for supporting load essentially in a single direction
-
- 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
- F16C33/3825—Ball cages formed as a flexible belt, e.g. spacers connected by a thin film
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、各種産業機械の直動部分の軸受として利用す
る保持器付直動ボールベアリングユニットに関するもの
である。TECHNICAL FIELD The present invention relates to a linear motion ball bearing unit with a retainer used as a bearing for a linear motion portion of various industrial machines.
［従来の技術］ 従来から循環形の直動ボールベアリングは、各種機械の
直動部分の軸受として利用されているが、一般的に総玉
形式（ソリッド形）であり、そのため、隣接する玉同士
が接触するばかりでなく、その接触点において玉の表面
が互いに逆方向に移動するように回転しているので、そ
の摩擦抵抗は転がり接触といってもかなり大きいもので
ある。[Prior Art] Conventionally, a circulating type linear motion ball bearing has been used as a bearing for a linear motion portion of various machines, but is generally a full ball type (solid type), and therefore, adjacent balls Not only do they make contact with each other, but at the contact point, the surfaces of the balls are rotating so as to move in opposite directions, so the frictional resistance is quite large even if it is rolling contact.
［発明が解決しようとする問題点］ 本発明の目的は、上記直動ボールベアリングの摩擦抵抗
の軽減をはかると同時に、メンテナンスフリー化、利用
の容易化をはかることにある。[Problems to be Solved by the Invention] An object of the present invention is to reduce the frictional resistance of the linear motion ball bearing, and at the same time, make it maintenance-free and easy to use.
［問題点を解決するための手段］ 上記目的を達成するための本発明の直動ボールベアリン
グユニットは、周囲に設けた軌道の一部に直線的な軌道
部分を有する無限軌道ブロックの周囲に、その軌道に沿
って多数の玉を等間隔で配列し、それらの玉を、多数の
リング状の玉保持部とそれらを連結する連結部からなる
屈曲可能な柔軟構造の保持器によって保持させ、それら
の玉及び保持器の外側を、玉の転がり接触部に開口をも
つケースにより覆い、それによって直動ボールベアリン
グをユニット化したものである。[Means for Solving the Problems] A linear motion ball bearing unit of the present invention for achieving the above object is provided around the endless track block having a linear track part in a part of the track provided in the periphery, A large number of balls are arranged at equal intervals along the track, and the balls are held by a bendable flexible structure cage composed of a large number of ring-shaped ball holders and a connecting portion connecting them, The outside of the ball and the cage is covered with a case having an opening at the rolling contact portion of the ball, whereby the linear motion ball bearing is unitized.
［作 用］ 直動ボールベアリングの玉を柔軟構造の保持器によって
保持させ、隣接する玉同士が接触しないようにしている
ので、総玉形式の場合に比して摩擦抵抗が大きく低減
し、しかも保持器が柔軟構造を有しているため、無限軌
道の曲率半径の小さい部分においても円滑に駆動され、
またそれらの玉及び保持器の外側をケースにより覆い、
直動ボールベアリングをユニット化しているので、この
ユニットを円筒形の支持リングなどに組み込むことによ
り、直動ボールベアリングを構成することができ、平面
状に配置すれば直動案内面などとしての使用も可能であ
る。[Operation] The balls of the linear motion ball bearings are held by a cage with a flexible structure to prevent adjacent balls from contacting each other, so the frictional resistance is greatly reduced compared to the case of the full ball type. Since the cage has a flexible structure, it can be driven smoothly even in a portion with a small radius of curvature of the endless track.
Also, cover the balls and the outside of the cage with a case,
Since the linear motion ball bearing is unitized, a linear motion ball bearing can be configured by incorporating this unit into a cylindrical support ring, etc. If it is arranged in a plane, it can be used as a linear motion guide surface. Is also possible.
［実施例］ 以下に本発明の実施例を図面を参照しながら詳述する。Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図及び第２図は、本発明に係る直動ボールベアリン
グユニットの一実施例の使用状態を示している。この直
動ボールベアリングユニットは、平坦な対向面１ａ，１
ａを直線的な軌道部分とした無限軌道ブロック１の周囲
に玉２の軌道を設け、その軌道に沿って多数の玉２，
２，・・を等間隔で配列し、それらの玉を、多数のリン
グ状の玉保持部３ａとそれらを連結する連結部３ｂから
なる屈曲可能な柔軟構造の保持器３によって保持させ、
玉２，２，・・及び保持器３の外側を、玉の転がり接触
部に開口５をもつケース４で覆うことにより、直動ボー
ルベアリングのユニット化を行っている。1 and 2 show a usage state of an embodiment of the linear motion ball bearing unit according to the present invention. This linear motion ball bearing unit has flat facing surfaces 1a, 1
The orbit of the ball 2 is provided around the endless orbital block 1 in which a is a linear orbital portion, and a large number of balls 2 are arranged along the orbit.
2, ... Are arranged at equal intervals, and these balls are held by a bendable flexible structure cage 3 including a large number of ring-shaped ball holding portions 3a and connecting portions 3b connecting them,
A linear motion ball bearing is unitized by covering the outside of the balls 2, 2, ... And the cage 3 with a case 4 having an opening 5 at the rolling contact portion of the ball.
保持器３は、高分子材料などの摩擦特性の良い材料を用
い、少なくとも各玉間の連結部を屈曲可能に構成すれば
よく、各玉間の空間にグリースなどの潤滑剤を封入する
ことにより、軸受の高性能化を図ることもできる。The cage 3 may be made of a material having a good friction characteristic such as a polymer material, and at least the connecting portion between the balls may be configured to be bendable. By filling a lubricant such as grease in the space between the balls, It is also possible to improve the performance of the bearing.
上記直動ボールベアリングユニットは、無限軌道を含む
平面内において、ケース４における玉の転がり接触部の
開口５から、直線的な軌道に沿って配列された玉２，
２，・・を若干突出させ、この直動ボールベアリングユ
ニットを、支持すべき直動部材６に対して無限軌道を含
む平面がほぼ直交するような向きにして、円筒形の支持
リング７に組み込んでいる。従って、支持リング７には
単に直動ボールベアリングユニットを組み込むための溝
８を加工しておけばよい。The linear motion ball bearing unit has balls 2, which are arranged along a straight path from the opening 5 of the rolling contact portion of the case 4 in the plane including the endless track.
2, ... are slightly projected, and the linear motion ball bearing unit is incorporated in the cylindrical support ring 7 in such a direction that the plane including the endless track is substantially orthogonal to the linear motion member 6 to be supported. I'm out. Therefore, it suffices to simply form the groove 8 in the support ring 7 for incorporating the linear motion ball bearing unit.
上記構成を有する直動ボールベアリングユニットにおい
ては、玉２，２，・・を柔軟構造の保持器３によって保
持させ、隣接する玉同士が接触しないようにしているの
で、従来の総玉形式の場合に比して摩擦抵抗が大きく低
減し、しかも、無限軌道ブロック１の周囲に多数の玉２
を配列状態で保持する保持器３を屈曲可能な柔軟構造に
しているので、剛性の高い保持器で玉相互を連結する場
合のように、無限軌道ブロック両端の湾曲部を各保持器
が通過する過程において、保持器全体に必要な長さに変
動が生じ、玉及び保持器の動作が不円滑になるようなこ
とがなく、円滑に駆動することができる。またそれらの
玉２及び保持器３の外側をケース４で覆うことによりユ
ニット化しているので、このユニットを円筒形の支持リ
ング７などに組み込むだけで、簡単且つ容易に直動ボー
ルベアリングを構成することができ、平面状に配置すれ
ば直動案内面などとしての使用も可能である。In the linear motion ball bearing unit having the above structure, the balls 2, 2, ... Are held by the retainer 3 having a flexible structure so that adjacent balls do not come into contact with each other. The frictional resistance is greatly reduced compared to the above, and a large number of balls 2 are provided around the endless track block 1.
Since the cages 3 for holding in an array state have a flexible structure that can be bent, each cage passes through the curved portions at both ends of the endless track block as in the case of connecting balls with each other by a cage having high rigidity. In the process, the required length of the entire cage does not fluctuate, the operation of the balls and the cage does not become unsmooth, and smooth driving is possible. Further, since the outer sides of the balls 2 and the cage 3 are covered with a case 4 to form a unit, a linear motion ball bearing can be simply and easily constructed by only incorporating this unit into a cylindrical support ring 7 or the like. It can be used as a linear motion guide surface or the like if it is arranged in a plane.
上述した第１図及び第２図の直動ボールベアリングユニ
ットは、無限軌道を縦形にした立体形のものであるが、
第３図及び第４図に示すように、無限軌道を横形にした
平面形とすることもできる。The linear motion ball bearing unit shown in FIGS. 1 and 2 is a three-dimensional type in which the endless track is a vertical type.
As shown in FIGS. 3 and 4, the endless track may have a horizontal plane shape.
即ち、第３図及び第４図に示す直動ボールベアリングユ
ニットは、上述した第１図及び第２図の実施例と同様
に、対向面１１ａ，１１ａを直線的な軌道部分とした無
限軌道ブロック１１の周囲の軌道に沿って、多数の玉１
２，１２，・・を等間隔で配列し、それらの玉を、屈曲
可能な柔軟構造の保持器１３によって保持させ、その外
側を玉の転がり接触部に開口１５をもつケース１４で覆
うことによりユニット化しているが、ケース１４におけ
る開口１５の位置を異にし、無限軌道を含む平面を直動
部材１６に対して若干傾斜するような向きにして、円筒
形の支持リング１７の溝１８に組み込むようにしてい
る。That is, the linear motion ball bearing unit shown in FIGS. 3 and 4 is an endless track block in which the facing surfaces 11a and 11a are linear track portions, as in the embodiment of FIGS. 1 and 2 described above. A large number of balls 1 along the orbit around 11
By arranging 2, 12, ... At equal intervals, the balls are held by a bendable flexible retainer 13, and the outside thereof is covered with a case 14 having an opening 15 at the rolling contact portion of the balls. Although unitized, the opening 15 in the case 14 is arranged in a different position so that the plane including the endless track is oriented so as to be slightly inclined with respect to the linear motion member 16, and is incorporated in the groove 18 of the cylindrical support ring 17. I am trying.
なお、その他の構成及び作用は、第１図及び第２図の実
施例の場合と実質的に同様である。The rest of the configuration and operation are substantially the same as those of the embodiment shown in FIGS. 1 and 2.
［発明の効果］ 以上に詳述した本発明の保持器付直動ボールベアリング
ユニットによれば、柔軟構造の保持器を採用することに
より、従来の総玉形式の直動ボールベアリングにおける
玉同士の接触による摩擦抵抗の増大という問題を解消
し、摩擦抵抗を著しく軽減することができ、さらにベア
リング部をユニット化したことにより、組み付けが簡単
且つ容易化されると共にメンテナンスフリー化され、そ
の利用分野の拡大を期待することができる。[Advantages of the Invention] According to the linear motion ball bearing unit with a retainer of the present invention described in detail above, by adopting a retainer having a flexible structure, it is possible to realize a ball-to-ball movement in a conventional total ball type linear motion ball bearing. The problem of increased frictional resistance due to contact can be solved, and the frictional resistance can be significantly reduced. Furthermore, by unitizing the bearing part, assembly is simple and easy, and maintenance-free. Expect expansion.
第１図は本発明に係る保持器付直動ボールベアリングユ
ニットの使用状態を示す要部縦断面図、第２図は同横断
面図、第３図は他の実施例の要部縦断面図、第４図は同
横断面図である。 １……無限軌道ブロック、 ２……玉、３……保持器、 ４……ケース、５……開口。FIG. 1 is a longitudinal sectional view of an essential part showing a usage state of a linear motion ball bearing unit with a retainer according to the present invention, FIG. 2 is a lateral sectional view of the same, and FIG. 3 is a longitudinal sectional view of an essential part of another embodiment. FIG. 4 is a transverse sectional view of the same. 1 ... Endless track block, 2 ... Ball, 3 ... Retainer, 4 ... Case, 5 ... Opening.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 水原 清司 茨城県新治郡桜村並木１丁目２番地 工業 技術院機械技術研究所内 (72)発明者 唯根 勉 東京都中央区銀座７丁目11番15号 光洋精 工株式会社東京事務所内 (72)発明者 本田 忠雄 茨城県土浦市大字中1313―３ 審査官 森林 克郎 (56)参考文献 特開 昭59−196137（ＪＰ，Ａ) 特開 昭59−43218（ＪＰ，Ａ) 実開 昭63−123824（ＪＰ，Ｕ) 実開 昭51−19147（ＪＰ，Ｕ) ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Kiyoji Mizuhara 1-2, Namiki Sakuramura, Shinji-gun, Ibaraki Prefectural Institute of Mechanical Engineers (72) Inventor Tsutomu Yune 7-11-15 Ginza, Chuo-ku, Tokyo Koyo Seiko Co., Ltd. Tokyo Office (72) Inventor Tadao Honda 1313-3, Naka, Tsuchiura, Ibaraki Examiner Katsuro Hayashi (56) References JP 59-196137 (JP, A) JP 59-43218 (JP, A) Actually opened 63-123824 (JP, U) Actually opened 51-19147 (JP, U)
Claims (1)
分を有する無限軌道ブロックの周囲に、その軌道に沿っ
て多数の玉を等間隔で配列し、それらの玉を、多数のリ
ング状の玉保持部とそれらを連結する連結部からなる屈
曲可能な柔軟構造の保持器によって保持させ、それらの
玉及び保持器の外側を、玉の転がり接触部に開口をもつ
ケースにより覆い、それによって直動ボールベアリング
をユニット化したことを特徴とする保持器付直動ボール
ベアリングユニット。1. A number of balls are arranged at equal intervals along a track around an endless track block having a linear track portion in a part of a track provided around the track, and the balls are arranged in a large number. It is held by a retainer having a bendable flexible structure consisting of a ring-shaped ball holding portion and a connecting portion connecting them, and the balls and the outside of the holder are covered with a case having an opening in the rolling contact portion of the ball, A linear motion ball bearing unit with cage characterized by unitizing the linear motion ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270009A JPH0643850B2 (en) | 1987-10-26 | 1987-10-26 | Direct acting ball bearing unit with cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270009A JPH0643850B2 (en) | 1987-10-26 | 1987-10-26 | Direct acting ball bearing unit with cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01112022A JPH01112022A (en) | 1989-04-28 |
| JPH0643850B2 true JPH0643850B2 (en) | 1994-06-08 |
Family
ID=17480279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62270009A Expired - Lifetime JPH0643850B2 (en) | 1987-10-26 | 1987-10-26 | Direct acting ball bearing unit with cage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643850B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3412914B2 (en) * | 1994-05-20 | 2003-06-03 | Ｔｈｋ株式会社 | Rolling guide device and method of manufacturing moving block of rolling guide device |
| DE102005023931B4 (en) * | 2005-05-24 | 2017-03-30 | Ab Skf | Ball bearing and ball chain |
| JP5292231B2 (en) * | 2009-09-01 | 2013-09-18 | 川崎重工業株式会社 | Control valve |
| CN113048147A (en) * | 2021-03-11 | 2021-06-29 | 北京博鲁斯潘精密机床有限公司 | High-precision linear motion guide rail of numerical control machine tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342671Y2 (en) * | 1974-07-30 | 1978-10-14 | ||
| DE3228762C2 (en) * | 1982-08-02 | 1986-10-16 | Ina Waelzlager Schaeffler Kg, 8522 Herzogenaurach | Rolling bearing for the longitudinally movable mounting of a component with a straight track |
| DE3313128A1 (en) * | 1983-04-12 | 1984-10-18 | Neff Gewindespindeln | BEARING ARRANGEMENT FOR THE LINEAR GUIDE OF A SLIDE LENGTH OF A GUIDE RAIL |
| JPH064094Y2 (en) * | 1987-02-03 | 1994-02-02 | 第一精工株式会社 | Cage for rolling elements |
-
1987
- 1987-10-26 JP JP62270009A patent/JPH0643850B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01112022A (en) | 1989-04-28 |
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Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
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| S533 | Written request for registration of change of name |
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| R350 | Written notification of registration of transfer |
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| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
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| R350 | Written notification of registration of transfer |
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| EXPY | Cancellation because of completion of term |