JPS5829289Y2 - Cage for ball spline and polygonal shaft - Google Patents
Cage for ball spline and polygonal shaftInfo
- Publication number
- JPS5829289Y2 JPS5829289Y2 JP17221680U JP17221680U JPS5829289Y2 JP S5829289 Y2 JPS5829289 Y2 JP S5829289Y2 JP 17221680 U JP17221680 U JP 17221680U JP 17221680 U JP17221680 U JP 17221680U JP S5829289 Y2 JPS5829289 Y2 JP S5829289Y2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- retainer
- cage
- outer ring
- polygonal shaft
- 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
Links
Landscapes
- Bearings For Parts Moving Linearly (AREA)
Description
【考案の詳細な説明】 本考案は、精密機械、省力化機器、測定機械。[Detailed explanation of the idea] This invention is a precision machine, a labor-saving device, and a measuring machine.
工作機械など直線で動く機構に組み込まれる機械要素に
関し、更に詳述すると、上下若しくは左右対称にボール
循環溝を内周面に形威した外輪に。Regarding mechanical elements incorporated in linear moving mechanisms such as machine tools, in more detail, it is an outer ring with vertically or horizontally symmetrical ball circulation grooves formed on the inner circumferential surface.
組み込み時の角度αよりいくらか大きめにそれぞれ製作
した上下若しくは左右対称の保持器に所定数のボールを
のせ、該保持器を内方に撓わませた状態で組み込むボー
ルスプライン許多角軸用保持器に関する。Relating to a cage for a polygonal shaft with a ball spline, in which a predetermined number of balls are mounted on vertically or horizontally symmetrical cages each manufactured at an angle α slightly larger than the angle α at the time of assembly, and the cage is assembled with the cage bent inward. .
一般に使用されている異径断面形状のスプラインシャフ
ト用ボールスプラインはボールを本体に直接組み込むケ
ーシングタイプと保持器を使用するケージ付タイプであ
る。Generally used ball splines for spline shafts with different cross-sectional diameters include a casing type in which the balls are directly incorporated into the main body, and a caged type in which a retainer is used.
保持器を使用しないケージレスタイプはケージの部分だ
けパーツが少なくなるので、コスト低減に役立つが組立
て分解にさいし、ボールが本体から離脱し易く１点検修
理などが面倒である。The cageless type, which does not use a cage, has fewer parts for the cage, which helps reduce costs, but the balls tend to come off from the main body during assembly and disassembly, making one-time inspections and repairs cumbersome.
これに対し、保持器にてボールを案内するタイプはボー
ルの回転半径は小さいため、負荷から無負荷へのころが
り抵抗が大きく、スムーズに循環せしむることか困難で
あると同時に組み込みが面倒であるなどの欠点を有する
。On the other hand, in the type where the balls are guided by a cage, the rotation radius of the balls is small, so the rolling resistance from loaded to unloaded is large, making it difficult to circulate smoothly and making installation difficult. It has some disadvantages such as:
本考案の目的は、軌道溝（軌道面）に接触する面積を点
接触タイプ（ボールブツシュタイプ）から線接触方式に
変えたことにより、これによって。The purpose of this invention is to change the area that contacts the raceway groove (raceway surface) from a point contact type (ball bush type) to a line contact type.
ベアリングの半径方向（あらゆる方向）に加わるすべて
の荷重を負荷でき、かつボールと軌道溝の接触面積が大
きいためボールブツシュにくらべ約１３倍の耐負荷性能
を有し、さらに摺動部の摩擦抵抗がすべり方式より数十
分の１と小さくすることができるボールスプラインと多
角軸周の保持器を提供することにある。It can carry all the loads that are applied in the radial direction (all directions) of the bearing, and because the contact area between the balls and raceway grooves is large, it has about 13 times the load-bearing performance compared to ball bushings, and it also has low frictional resistance on the sliding parts. It is an object of the present invention to provide a cage with a ball spline and a polygonal shaft circumference that can be made several tenths smaller than a sliding type.
以下図に基いて本考案の一実施例について説明する。An embodiment of the present invention will be described below based on the drawings.
１はパイプ材あるいは棒材よりなる中空円筒状の外輪で
あって、該外輪１にまず略２／３Ｒの円筒面ａを形成し
、ついで該円筒面ａにボールスプラインの負荷ボール溝
２．２を外輪の中心を通り。Reference numeral 1 denotes a hollow cylindrical outer ring made of pipe material or bar material. First, a cylindrical surface a of approximately 2/3R is formed on the outer ring 1, and then a load ball groove 2.2 of a ball spline is formed on the cylindrical surface a. through the center of the outer ring.
かつ水平線上軸心方向左右平行に形威し１次にこれら負
荷ボール溝２，２の上下に間隔りをおいて。The load ball grooves 2, 2 are shaped horizontally parallel to each other in the axial direction, and are spaced above and below the load ball grooves 2, 2.
それぞれ無負荷ボール溝３，３，３，３を旋削あるいは
引き抜き等の機械加工にて形成することにより負荷ボー
ル溝２と無負荷ボール溝３間に分離帯頂壁４，４，４．
４が形成される。By forming the non-load ball grooves 3, 3, 3, 3 by machining such as turning or drawing, separation zone top walls 4, 4, 4.
4 is formed.
さらに、外輪１の両端部に接近して内周方向逃げ部５，
５を形成してボール循環溝が構成される。Furthermore, inner circumferential relief portions 5, which are close to both ends of the outer ring 1,
5 to form a ball circulation groove.
ついで、保持器押え段部６，６およびサークリップ周胴
凹部７，７を形成する。Next, the retainer presser step portions 6, 6 and the circlip peripheral recesses 7, 7 are formed.
前記負荷ボール溝２，２は負荷ボール８，８゜・・が多
角軸１０のボール軌道溝９，９・・・と接点１１，１１
，１２，１２を結ぶ延長線上の角度θ′が直角ななすよ
うに形成されている。In the load ball grooves 2, 2, the load balls 8, 8°... contact the ball raceway grooves 9, 9... of the polygonal shaft 10, and the contact points 11, 11
, 12, 12 so that the angle θ' on the extension line connecting them is a right angle.
上記多角軸１００ボール軌道溝９，９・・・は多角軸１
０の対角線上に外輪１の内周面２／３Ｒを越えない半径
の円弧あるいは直線で長手方向軸心に平行して切截され
てなる多角軸１０の上下若しくは左右車送１０１，１０
１・・・に近接して４条形成される。The polygonal shaft 100 and the ball raceway grooves 9, 9... are the polygonal shaft 1
The upper and lower or left and right carriages 101, 10 of the polygonal shaft 10 are cut parallel to the longitudinal axis by an arc or a straight line with a radius that does not exceed 2/3R of the inner circumferential surface of the outer ring 1 on the diagonal line of 0.
1... are formed in the vicinity of 4 strips.
該ボール軌道溝９，９・・・は該軌道溝９，９・・・を
走行するボール８，８・・・が外輪１の負荷ボール溝の
接点１１．１１と該軌道溝９，９の接点１２，１２の前
記対角線上の交点の角度θ′が直角を形成する。The balls 8, 8... running in the raceway grooves 9, 9... contact the contact point 11.11 of the load ball groove of the outer ring 1 with the contact point 11.11 of the raceway groove 9, 9. The angle θ' of the diagonal intersection of the contacts 12, 12 forms a right angle.
また、無負荷ボール溝３，３が円筒面ａと接する側は第
１図の如き傾斜側壁１３ななす。Further, the side where the no-load ball grooves 3, 3 contact the cylindrical surface a forms an inclined side wall 13 as shown in FIG.
本考案の保持器２０はプラスチック、硬質ゴムの如き可
塑材料あるいは焼結合金の如き粉末材料若しくはダイキ
ャスト合金の如き材料からなり。The retainer 20 of the present invention is made of a plastic material such as plastic, hard rubber, a powder material such as a sintered alloy, or a material such as a die-cast alloy.
そして該保持器２０．２０は左右対称形に成形する。The retainer 20.20 is formed symmetrically.
該保持器２０の長手方向内測面は上下垂直面２１．２１
と中央垂直面２２０間を巾広の傾斜面２３．２３で接続
し、そして該傾斜面２３，２３の傾斜角度後外輪１内に
組み込んだときに少なくとも直角をなすように形成する
。The inner measuring surface in the longitudinal direction of the cage 20 is the upper and lower vertical surfaces 21.21.
and the central vertical surface 220 are connected by a wide inclined surface 23.23, and the inclined angles of the inclined surfaces 23, 23 are formed so as to form at least a right angle when assembled into the outer ring 1.
保持器２０の長手方向外側面は外輪１の負荷ボール溝２
と略同−半径の中央曲面２４並びに上下曲面２５．２５
と、外輪１の分離帯頂壁４と略同−半径の中間曲面２６
．２６間をそれぞれ傾斜面２７．２７にて連続し、前記
上下垂直面２１の端部と上下曲面２５の端部を接続する
ことにより外輪１の無負荷ボール溝３に形成される側壁
１３と同一傾斜面２８を形成する。The longitudinal outer surface of the cage 20 is connected to the load ball groove 2 of the outer ring 1.
Central curved surface 24 and upper and lower curved surfaces 25.25 with approximately the same radius as
and an intermediate curved surface 26 having approximately the same radius as the separation zone top wall 4 of the outer ring 1.
．． 26 are continuous at inclined surfaces 27 and 27, respectively, and are the same as the side walls 13 formed in the no-load ball groove 3 of the outer ring 1 by connecting the ends of the upper and lower vertical surfaces 21 and the ends of the upper and lower curved surfaces 25. An inclined surface 28 is formed.
上記の如き内側面と外側面を形成した本考案の保持器２
０には負荷ボール８容と無負荷ボール８用の無限軌道環
状凹溝２９，２９が上部、下部に形成され、さらにこれ
ら凹溝２９，２９内負荷ボール８，８・・・が脱落しな
い程度の長孔３０゜３０を形成する。Cage 2 of the present invention having inner and outer surfaces formed as described above
0 has endless track annular grooves 29, 29 for the loaded balls 8 and the unloaded balls 8 formed at the upper and lower parts, and furthermore, the grooves 29, 29 are designed to the extent that the loaded balls 8, 8... do not fall out. A long hole 30°30 is formed.
次に、外輪１内に１本考案の保持器２０にボール、サー
クリップと組み込み、さらに多角軸を嵌挿せしむる順序
を説明する。Next, the order of assembling the ball and circlip into the retainer 20 of the present invention in the outer ring 1, and further fitting and inserting the polygonal shaft will be explained.
まず１本考案の左側の保持器２０の無限軌道環状凹溝２
９，２９内に負荷ボール８，８・・・と無負荷ボール８
’、８’ ・・・をグリースを介して充填し、しかるの
ち、保持器２０の上下傾斜面２８．２８を押圧した状態
で、外輪１の側壁１３゜１３に挿入すると共に保持器の
中央曲面２４を外輪１の負荷ボール溝２に当接する迄押
圧挿入し、押圧力なとることにより前記上下傾斜面２８
゜２８は外輪１の傾斜側壁１３に強く接することになる
。First of all, the endless track annular groove 2 of the left cage 20 of this invention
Loaded balls 8, 8... and unloaded balls 8 in 9, 29
', 8'... are filled with grease, and then, while pressing the upper and lower sloped surfaces 28 and 28 of the cage 20, it is inserted into the side wall 13° 13 of the outer ring 1 and the center curved surface of the cage. 24 is pressed and inserted until it contacts the load ball groove 2 of the outer ring 1, and by applying the pressing force, the vertically inclined surface 28
28 comes into strong contact with the inclined side wall 13 of the outer ring 1.
ついで１本考案の右側の保持器２０も左側同様な順序で
外輪内に組み込み、保持器押え４０．４０を外輪の保持
器押え段部６，６に挿入し、ついでサークリップ４Ｌ４
１を凹部７，７に嵌め込んでボールスプラインの組み立
てが完了し、ついで４条のボール軌道溝９，９・・・を
構威した多角軸１０を嵌挿せしむる。Next, the cage 20 on the right side of the present invention is also assembled into the outer ring in the same order as the left side, and the cage pressers 40 and 40 are inserted into the cage presser steps 6, 6 of the outer ring, and then the circlip 4L4 is inserted.
1 is fitted into the recesses 7, 7 to complete the assembly of the ball spline, and then the polygonal shaft 10 having four ball raceway grooves 9, 9, . . . is fitted and inserted.
本考案のボールスプラインと多角軸周保持器はボールス
プラインの外輪の内円面には負荷ボール溝と無負荷ボー
ル溝が右左２組形成されるため。The ball spline and polygonal shaft periphery retainer of the present invention have two sets of loaded ball grooves and non-loaded ball grooves formed on the inner circular surface of the outer ring of the ball spline, right and left.
負荷ボールと無負荷ボール間の巾りが在来のボールスプ
ラインに比して大きくとることができ、転動するボール
が保持器により分離されているため。The width between the loaded and unloaded balls can be larger than that of conventional ball splines, and the rolling balls are separated by a cage.
無負荷ボールには走行抵抗はなくスムーズに循環するこ
とができ、さらに負荷から無負荷あるいは無負荷から負
荷へ移行するさいのボールの回転半径を大きく形成する
ことができるので、ボールのころがり抵抗を少なく、か
つスムーズに循環することができる。Unloaded balls have no running resistance and can circulate smoothly, and the rolling radius of the balls can be made larger when transitioning from loaded to unloaded or from unloaded to loaded, which reduces the rolling resistance of the balls. It can be circulated smoothly and in a small amount.
また１本考案の保持器は２分割され、それぞれが可塑材
料あるいは粉末冶金、ダイキャスト合金の如き材料を用
いて一体成形されるため、予め組み込みの時の角度αよ
りいくらか大きめに製作し。Furthermore, since the cage of the present invention is divided into two parts, each of which is integrally molded using a material such as a plastic material, powder metallurgy, or die-cast alloy, the cage must be made in advance to be slightly larger than the angle α when assembled.
外輪１内に組み込むと１本考案の保持器の中央曲面２４
．中間曲面２６．２６が、外輪１の負荷ボール溝２０曲
面と分離帯頂壁４にそれぞれ接触し。When incorporated into the outer ring 1, the central curved surface 24 of the cage of the present invention
．． The intermediate curved surfaces 26, 26 are in contact with the curved surface of the load ball groove 20 of the outer ring 1 and the top wall 4 of the separation zone, respectively.
さらに上下傾斜面２８．２８が外輪１の傾斜側壁１３に
抑圧固定され、保持器の回転方向の固定と外輪への固定
を兼ねることができる効果を奏する。Further, the vertically inclined surfaces 28, 28 are pressed and fixed to the inclined side wall 13 of the outer ring 1, thereby achieving the effect that the retainer can be fixed in the rotational direction and fixed to the outer ring.
なお、負荷ボールと無負荷ボールが異なる符号を付しで
あるが、これは説明上付したのであって。It should be noted that the loaded balls and non-loaded balls are given different numerals, but this is for illustrative purposes only.
同一ボールであることは勿論である。Of course, they are the same ball.
図において、第１図はボールスプラインと多角軸に本考
案の保持器を組合せの断面図、第２図は本考案の保持器
を組込んだボールスプラインの縦断正面図、第３図は本
考案の保持器を組込んだ要部ボールスプラインの側面図
、第４図イは本考案保持器を半裁外輪（仮想線）に組み
込んだ状態を示す第４図ロＡ−Ａ線断面図、第４図口は
本考案保持器の平面図である。
１・・・・・・外輪、２・・・・・・負荷ボール溝、９
・・・；・・ボール軌道溝、１０・・・・・・多角軸、
２０・・・・・・保持器。
２４・・・・・・中央曲面、２５・・・・・・上下曲面
、２６・・・・・・中間曲面、２７，２８・・・・・・
傾斜面、２９・・・・・・無限軌道環状凹溝、３０・・
・・・・負荷ボール用長孔。In the figures, Fig. 1 is a cross-sectional view of a combination of a ball spline and a cage of the present invention on a polygonal shaft, Fig. 2 is a longitudinal sectional front view of a ball spline incorporating the cage of the present invention, and Fig. 3 is a cross-sectional view of a ball spline and a cage of the present invention incorporated in the polygonal shaft. Fig. 4A is a side view of the main ball spline incorporating the retainer, Fig. 4B is a sectional view taken along line A-A, Fig. The figure opening is a plan view of the cage of the present invention. 1...Outer ring, 2...Load ball groove, 9
・・・；・・・Ball raceway groove, 10・・・・・・Polygonal shaft,
20...Retainer. 24...Central curved surface, 25...Upper and lower curved surface, 26...Intermediate curved surface, 27,28...
Inclined surface, 29... Track annular groove, 30...
...Long hole for load ball.
Claims (1)
若しくは、左右対称の保持器２０．２０は組み込む外輪
１の負荷ボール溝２，２と同一半径でもって形成された
中央曲面２４並びに上下曲面２５と外輪１の分離帯頂壁
４と同一半径でもって形威された中間曲面２６を有し、
これら曲面間を傾斜面２７にて接続し、そして上下端部
には傾斜面２８が形威されており、さらに前記外輪１の
内周面に形成された負荷ボール溝、無負荷ボール溝およ
び内周方向の逃げ部５，５と一致する無限軌道環状凹溝
２９，２９が形成され、これら無限軌道環状凹溝２９，
２９には負荷ボール用長孔３０．３０が形威され、該保
持器２０．２０を内方にそれぞれ撓わませた状態で組み
込むことができることを特徴とするボールスプラインと
多角軸用保持器。The vertically or horizontally symmetrical retainer 20.20, which is manufactured to be somewhat larger than the angle α at the time of assembly, has a central curved surface 24 and an upper and lower curved surface 25 formed with the same radius as the load ball grooves 2, 2 of the outer race 1 to be assembled, and the outer race. It has an intermediate curved surface 26 having the same radius as the top wall 4 of the separation zone 1,
These curved surfaces are connected by an inclined surface 27, and inclined surfaces 28 are formed at the upper and lower ends, and a loaded ball groove, a non-loaded ball groove, and an inner Track annular grooves 29, 29 are formed that coincide with the circumferential relief portions 5, 5, and these endless track annular grooves 29,
A retainer for a ball spline and a polygonal shaft, characterized in that a long hole 30, 30 for a load ball is formed in the retainer 29, and the retainer 20, 20 can be assembled in a state in which each retainer is bent inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17221680U JPS5829289Y2 (en) | 1980-12-02 | 1980-12-02 | Cage for ball spline and polygonal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17221680U JPS5829289Y2 (en) | 1980-12-02 | 1980-12-02 | Cage for ball spline and polygonal shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56148120U JPS56148120U (en) | 1981-11-07 |
| JPS5829289Y2 true JPS5829289Y2 (en) | 1983-06-27 |
Family
ID=29683024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17221680U Expired JPS5829289Y2 (en) | 1980-12-02 | 1980-12-02 | Cage for ball spline and polygonal shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829289Y2 (en) |
-
1980
- 1980-12-02 JP JP17221680U patent/JPS5829289Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56148120U (en) | 1981-11-07 |
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