JPH043125Y2

JPH043125Y2 -

Info

Publication number: JPH043125Y2
Application number: JP1984069725U
Authority: JP
Priority date: 1984-05-15
Filing date: 1984-05-15
Publication date: 1992-01-31
Also published as: JPS60182523U

Description

【考案の詳細な説明】イ考案の目的「産業上の利用分野」本考案は、例えば直径と長さが略等しい多数の
円筒状のころが、夫々の回転軸心を90°異にして
隣接して交互に配列され、無限循環路上を循環す
るいわゆるクロスローラ型式の直線運動するころ
軸受に関するものである。[Detailed explanation of the invention] A. Purpose of the invention ``Industrial application field'' This invention is based on the invention, for example, in which a number of cylindrical rollers having approximately the same diameter and length are adjacent to each other with their respective rotation axes different by 90 degrees. This invention relates to so-called cross-roller type linear-moving roller bearings that are alternately arranged and circulate on an endless circulation path.

「考案が解決しようとする問題点」第８図は円弧上をころの端面と接しながらころ
が移動する様子を描いたもので、長さＬのころ１
が半径Ｒの内周面を有する円弧路に沿つて移動す
るためには円弧路の外周面の半径はR₁＝Ｒ＋Ｌ
ではなくて、 R₂＝√²＋1.118²−２・・1.118・
cos153.435° ＞R₁ となり、方向転換路の断面寸法が直線路（リター
ン路、軌道路）の断面寸法より大きくなり、この
違いは円弧路から直線路に入つてもしばらく続き
Ｂ距つたｂに至つて止む。そして、Ｏ＜Ｂ＜Ｌで
ある。このように方向転換路からリターン路への
接続部分は通路の断面積が徐々に変化するためこ
ろの挙動が複雑になりやすく、軸受としての摺動
抵抗に影響することがあつた。``Problem that the invention attempts to solve'' Figure 8 depicts the movement of a roller on an arc while contacting the end surface of the roller.
To move along an arcuate path having an inner circumferential surface with radius R, the radius of the outer circumferential surface of the arcuate path is R ₁ = R + L
Rather, R ₂ =√ ² +1.118 ² −2・・1.118・
cos153.435° > R ₁ , and the cross-sectional dimension of the direction change road becomes larger than the cross-sectional dimension of the straight road (return road, trackway), and this difference continues for a while even after entering the straight road from the circular arc road. It stops when it reaches . And O<B<L. As described above, since the cross-sectional area of the passage gradually changes at the connecting portion from the direction change path to the return path, the behavior of the rollers tends to become complicated, which may affect the sliding resistance of the bearing.

「従来の技術」従来のものは、リターン路の部材と方向転換路
の部材が直線路と円弧路とに区分され、別体とな
つていたため、組立時の誤差や位置決め不良など
で直線路と円弧路の境目に段差が生じやすく、軸
受の摺動抵抗を大きくしてしまう欠点があつた。"Conventional technology" In the conventional technology, the members of the return path and the members of the direction change path were divided into straight paths and circular paths, and were separate pieces, so errors during assembly and poor positioning caused problems between straight paths and turning paths. This has the disadvantage that steps tend to occur at the boundaries of the arcuate paths, increasing the sliding resistance of the bearing.

ロ考案の構成「問題点を解決するための手段」「作用」本考案は前記接続部分の外まわりの壁面の継ぎ
目をなくし、かつ複雑な接続部分の壁面を射出成
形で形成するため、この部分でのころの挙動は円
滑な動きをし、軸受の摺動抵抗を安定的に小さく
することができ、さらに、軽量でかつ安価な側板
や案内板を作成することにより軽量で安価な軸受
を提供しうるものである。B. Composition of the invention: ``Means for solving the problem''``Operations'' This invention eliminates the seam on the wall surface around the outside of the connection part, and forms the wall surface of the complicated connection part by injection molding. The rollers move smoothly and the sliding resistance of the bearing can be stably reduced.Furthermore, by creating lightweight and inexpensive side plates and guide plates, we can provide a lightweight and inexpensive bearing. It is something that can be used.

そして本考案の構成は下記の要素からなるもの
である。すなわち、トラツクレールの側面部に軌
道溝を長手方向に形成し、該軌道溝に対応する長
手方向の片側の軌道溝と両端の円弧状（半径Ｒ）
の方向転換路内まわり壁面とをエンドレスに形成
したベアリングプレートをころを介してトラクレ
ールと組合わせてなる無限直線運動用ころ軸受に
おいて、 (1) ころは直径と長さが略等しいＬの円筒ころで
隣接するころの軸心を直交させたクロスローラ
方式であること、 (2) ベアリングプレートの長手方向の他側には中
心からＲ＋Ｌの位置にリターン路の外まわり壁
面が形成された薄肉鋼板等製の案内板が設けら
れ、また長手方向の両端にはプラスチツク等製
で円弧状（半径R₂＞Ｒ＋Ｌ）の方向転換路外
まわり壁面を有する側板が結合されているこ
と、 (3) 方向転換路におけるR₂−（Ｒ＋Ｌ）の寸法差
がリターン路の両端の側板部において、長さＬ
程度の寸法範囲内で徐々に吸収されているこ
と、を特徴とする直線運動用ころ軸受の方向転換路で
ある。 The configuration of the present invention consists of the following elements. That is, a raceway groove is formed in the longitudinal direction on the side surface of the track rail, and a raceway groove on one side in the longitudinal direction corresponding to the raceway groove and an arc shape (radius R) at both ends are formed on the side surface of the track rail.
In a roller bearing for infinite linear motion, which is formed by combining a bearing plate with an endless inner wall surface of a direction changing path and a track rail via rollers, (1) The rollers are L-shaped cylinders with approximately equal diameter and length. (2) On the other longitudinal side of the bearing plate, there is a thin steel plate, etc. on which the outer wall surface of the return path is formed at the position R+L from the center. ( ₃ ) Turning path The dimensional difference of R ₂ - (R + L) in the side plate portions at both ends of the return path is equal to the length L
This is a direction changing path for a roller bearing for linear motion, characterized in that the direction change path is gradually absorbed within a size range of about 1.

「実施例」第１図は本考案実施例第１例を示す一部切断正
面図、第２図、第３図は同じく斜視図および平断
面図である。図中１はころ、２はトラツクレー
ル、３はベアリングプレート、４は側板、５はテ
ーブル、６は保持板、７は案内板である。Embodiment FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention, and FIGS. 2 and 3 are a perspective view and a plan sectional view. In the figure, 1 is a roller, 2 is a track rail, 3 is a bearing plate, 4 is a side plate, 5 is a table, 6 is a holding plate, and 7 is a guide plate.

トラツクレール２の側面部には軌道溝２ａが長
手方向に形成せられ、またベアリングプレート３
の外周面は直線状の平行な２平面と、この２面を
結ぶ円弧状の２つの曲面からなつており、外周面
にエンドレスのＶ溝３ａが形成され、ころ１の無
限循環路の内側半分となつている。ベアリングプ
レート３の長手方向両端には、ベアリングプレー
ト３のＶ溝３ａに対応したＶ溝４ａが形成されて
いる側板４が固着されて方向転換路を形成してい
る。リターン路の外まわり壁面は、薄肉鋼板を塑
性加工してＶ溝７ａを形成した案内板７によつて
形成されるが、方向転換路との接続部分の外まわ
り通路は側板４の壁面４ｂが案内板側へ少なくと
もころ１個分は連続して延びていて該延びた部分
に案内板６が入り込んで一体に形成されている。
側板４は普通、プラスチツク材を射出成形して製
作するが、精密鋳造品でもよい。側板４を形成す
る際に、完成した案内板７を側板４の金型へ中子
のように挿入し、射出成形することによつて、側
板４と案内板７とを一体結合する。 A raceway groove 2a is formed in the side surface of the track rail 2 in the longitudinal direction, and a bearing plate 3 is formed on the side surface of the track rail 2.
The outer circumferential surface of the roller 1 is made up of two straight parallel planes and two arcuate curved surfaces connecting these two surfaces, and an endless V-groove 3a is formed on the outer circumferential surface, and the inner half of the endless circulation path of the roller 1 is formed on the outer circumferential surface. It is becoming. Side plates 4 having V grooves 4a formed therein corresponding to the V grooves 3a of the bearing plate 3 are fixed to both ends of the bearing plate 3 in the longitudinal direction to form a direction change path. The outer wall surface of the return path is formed by a guide plate 7 in which a V-groove 7a is formed by plastic processing of a thin steel plate, while the outer wall surface 4b of the side plate 4 is formed by the guide plate 7 at the connection portion with the direction change path. The guide plate 6 extends continuously toward the side by at least one roller, and is integrally formed with the guide plate 6 inserted into the extended portion.
The side plate 4 is usually manufactured by injection molding plastic material, but may also be a precision casting. When forming the side plate 4, the completed guide plate 7 is inserted into a mold for the side plate 4 like a core and injection molded, thereby integrally joining the side plate 4 and the guide plate 7.

第４図は側板４と案内板７の位置関係を示した
ものである。また第５図は軌道溝側に設けられた
保持板６の斜視図であつて、トラツクレール１と
ベアリングプレート３を分離してもころの脱落を
防止するためのスリツト６ａと、負荷域にあるこ
ろを方向転換路へ案内する機能を持つ舌片６ｂが
設けられる。第６図は案内板７の変形例で、案内
板７の必要個所に、切欠部７ｂ、Ｕ字状切欠部７
ｃ、孔７ｄなどを形成し、側板４と一体成形すれ
ば結合力が強化される。 FIG. 4 shows the positional relationship between the side plate 4 and the guide plate 7. FIG. 5 is a perspective view of the retaining plate 6 provided on the raceway groove side, and shows a slit 6a for preventing the rollers from falling off even if the track rail 1 and the bearing plate 3 are separated, and a retaining plate 6 in the load area. A tongue piece 6b is provided which has the function of guiding the roller to the direction change path. FIG. 6 shows a modification of the guide plate 7, in which cutouts 7b and U-shaped cutouts 7 are provided at necessary locations on the guide plate 7.
If holes 7d, etc. are formed and integrally molded with the side plate 4, the bonding force will be strengthened.

第７図は方向転換路の外まわり壁面形状に対す
る改善例を示すもので、側板４の壁面４a′を曲面
にして方向転換路内のころ１の移動を円滑にして
いる。 FIG. 7 shows an example of an improvement to the shape of the outer wall surface of the direction change path, in which the wall surface 4a' of the side plate 4 is curved to allow smooth movement of the roller 1 within the direction change path.

ハ考案の効果本考案による効果は次の通りである。C. Effect of the idea The effects of the present invention are as follows.

(1) 接続部分の外まわりの壁面の継ぎ目がなくな
る。(1) There will be no seam on the wall around the outside of the connection.

(2) 射出成形により接続部分の壁面が形成される
ため、壁面精度がよい。(2) Since the wall surface of the connection part is formed by injection molding, the wall surface accuracy is good.

(3) 薄肉鋼板とプラスチツクまたはダイカスト合
金にて外まわり壁面を形成するため量産性に富
み、軽量で安価な軸受となる。(3) Since the outer wall is made of thin steel plate and plastic or die-cast alloy, the bearing is easy to mass produce and is lightweight and inexpensive.

(4) 接続部分のころの引つかかりが減少し、軸受
の摺動抵抗が減少する。(4) The rollers at the connection part are less likely to get caught, and the sliding resistance of the bearing is reduced.

(5) ころがクロスローラ方式であるからリテーナ
等の部材を必要としないで強力な負荷に耐え得
る。(5) Since the rollers are of the cross-roller type, strong loads can be withstood without the need for retainers or other members.

[Brief explanation of drawings]

第１図は本考案実施の１例を示す一部切断正面
図、第２図、第３図、第４図および第５図は同じ
く斜視図、平断面図、要部斜視図、および要部斜
視図であり、第６図、第７図は変形例を示す斜視
図、一部切断正面図である。また第８図はころ移
動状態を示す説明図である。図中の符号はそれぞれ下記部材を示す。１……
ころ、２……トラツクレール、３……ベアリング
プレート、４……側板、５……テーブル、６……
保持板、７……案内板。 FIG. 1 is a partially cutaway front view showing an example of the implementation of the present invention, and FIGS. 2, 3, 4, and 5 are a perspective view, a plan sectional view, a perspective view of the main part, and a main part. It is a perspective view, and FIGS. 6 and 7 are a perspective view and a partially cutaway front view showing modified examples. Further, FIG. 8 is an explanatory diagram showing the state of roller movement. The symbols in the drawings indicate the following members, respectively. 1...
Roller, 2... Track rail, 3... Bearing plate, 4... Side plate, 5... Table, 6...
Holding plate, 7... guide plate.

Claims

[Claims for Utility Model Registration] A raceway groove is formed in the side surface of the track rail in the longitudinal direction, and a raceway groove on one side and the other side in the longitudinal direction corresponding to the raceway groove and an arc-shaped (radius R) direction at both ends. In a roller bearing for infinite linear motion, which is constructed by combining a bearing plate with an endless inner circumferential wall surface of the switching path and the track rail via rollers, (1) the rollers have a circumference of L whose diameter and length are approximately equal; (2) The raceway groove on the other side of the bearing plate should be a thin steel plate, etc., with an outer wall surface of the return path formed at the position R+L from the center. ( ₃ ) Turning path The dimensional difference of R ₂ - (R + L) in is gradually absorbed within a dimensional range of approximately length L at the side plate portions at both ends of the return path, (4) the formed guide plate made of the thin steel plate, etc. A roller for infinite linear motion having a direction change path, characterized in that the direction change path is formed by integrally combining the side plate and the guide plate by inserting the same into a mold for the side plate like a core and injection molding. bearing.