JP4376003B2 - Sliding device - Google Patents

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Publication number
JP4376003B2
JP4376003B2 JP2003166789A JP2003166789A JP4376003B2 JP 4376003 B2 JP4376003 B2 JP 4376003B2 JP 2003166789 A JP2003166789 A JP 2003166789A JP 2003166789 A JP2003166789 A JP 2003166789A JP 4376003 B2 JP4376003 B2 JP 4376003B2
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load
sliding
shaft
sliding body
groove
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JP2005003080A (en
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充 山崎
信一郎 山田
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Nippon Bearing Co Ltd
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Nippon Bearing Co Ltd
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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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/502—Other types of ball or roller bearings with rolling elements in rows not forming a full circle
    • 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
    • F16C33/58—Raceways; Race rings
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/20—Application independent of particular apparatuses related to type of movement
    • F16C2300/28—Reciprocating movement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、摺動装置に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来の縦湾曲線摺動する摺動装置として、軸21に対して摺動体22が縦湾曲線摺動するように設けられた図１の摺動装置がある。具体的には、軸21及び摺動体22に、夫々縦湾曲形状の第一負荷溝21ａが形成された縦湾曲形状のレール体21ｂ及び第二負荷溝22ａが形成された縦湾曲形状のレール体22ｂが、該第一負荷溝21ａと第二負荷溝22ａとが対向して負荷路23が形成されるように設けられ、負荷路23には該負荷路23を転動移動する複数の転動体24が配設され、この転動体24は転動体保持器25により所定間隔を保持する状態で配設されている。
【０００３】
尚、図１の摺動装置の場合、負荷路23は左右一カ所ずつ設けられている。図中符号27は、転動体保持器25の抜けを防止するストッパーネジである。
【０００４】
ところで、従来の図１に図示したような縦湾曲線摺動する摺動装置には、以下に示すような欠点がある。
【０００５】
（１） 縦湾曲形状のレール体21ｂ・22ｂの製作は、直線形状のレール体の製作に比して非常に手間がかかる。
【０００６】
（２） また、レール体21ｂ・22ｂを付設する軸21及び摺動体22にも該レール体21ｂ・22ｂの縦湾曲形状に合致する曲面を形成しなければならず、縦湾曲形状のレール体21ｂ・22ｂの製作同様、非常に手間がかかる。特に、この軸21と摺動体22の製作は、平面と曲面の幾何交差が必要で、汎用機器による加工は極めて困難であり、専用の加工機器・加工方法で加工しなければならずコスト高となるのは避けられない。
【０００７】
（３） しかも、この縦湾曲形状のレール体21ｂ・22ｂを軸21及び摺動体22の曲面に取り付ける際には、曲面同士の調整が必要となり、精度良く取り付け作業を行うのは困難で、この点からもコスト高となるのは避けられない。
【０００８】
本発明は、上述の問題点を解決したもので、軸及び摺動体に直接、縦湾曲形状の負荷溝を形成することで、従来より大幅に部品点数を削減して製作が極めて容易となる極めて実用性に秀れた画期的な摺動装置を提供するものである。
【０００９】
【課題を解決するための手段】
添付図面を参照して本発明の要旨を説明する。
【００１０】
軸１に対して摺動体２が縦湾曲線摺動するように設けられた摺動装置であって、前記軸１と前記摺動体２との間には縦湾曲形状の負荷路３が設けられ、この負荷路３には該負荷路３を転動移動する複数の転動体４が配設され、前記負荷路３は、前記軸１と前記摺動体２に夫々対向状態となるように形成された縦湾曲形状の第一負荷溝１ａと第二負荷溝２ａとで構成され、この第一負荷溝１ａは前記軸１と一体に構成されており、また、前記第二負荷溝２ａは前記摺動体２と一体に構成されており、前記第一負荷溝１ａは、前記軸１の下面に形成された平坦面を加工基準面として形成され、且つ、この第一負荷溝１ａは前記軸１の下面に形成された平坦面と平行な接線を有する縦湾曲形状に形成され、前記第二負荷溝２ａは、前記摺動体２の上面に形成された平坦面を加工基準面として形成され、且つ、この第二負荷溝２ａは前記摺動体２の上面に形成された平坦面と平行な接線を有する縦湾曲形状に形成され、この軸１及び摺動体２に形成された前記平坦面は夫々、前記軸１及び前記摺動体２を被取付部材に取り付ける際、前記摺動体２の摺動軌道の曲率中心と前記負荷路３の曲率中心とを一致させるための取付基準面であることを特徴とする摺動装置に係るものである。
【００１１】
また、請求項１記載の摺動装置において、前記摺動体２として基部２ｂと該基部２ｂの左右に袖部２ｃ・２ｄを有する断面視略逆凹形状のものが採用され、この摺動体２の前記基部２ｂの下面は凸縦湾曲面２ｂ’に設定されていることを特徴とする摺動装置に係るものである。
【００１２】
請求項２記載の摺動装置において、前記摺動体２の基部２ｂの下面と対向する前記軸１の上面は前記摺動体２の基部２ｂの凸縦湾曲面２ｂ’と略合致する凹縦湾曲面１’に設定されていることを特徴とする摺動装置に係るものである。
【００１３】
また、請求項２，３いずれか１項に記載の摺動装置において、前記摺動体２の左右の袖部２ｃ・２ｄの下面は前記基部２ｂの凸縦湾曲面２ｂ’と同様の凸縦湾曲面２ｃ’・２ｄ’に設定されていることを特徴とする摺動装置に係るものである。
【００１４】
また、請求項２〜４いずれか１項に記載の摺動装置において、前記負荷路３を構成する前記第一負荷溝１ａは前記軸１の左右の側面に設けられ、また、前記負荷路３を構成する前記第二負荷溝２ａは前記摺動体２の左右の袖部２ｃ・２ｄの内面に設けられていることを特徴とする摺動装置に係るものである。
【００１５】
また、請求項１〜５いずれか１項に記載の摺動装置において、前記負荷路３には、前記転動体４同士を所定間隔で保持する転動体保持器５が設けられていることを特徴とする摺動装置に係るものである。
【００１６】
【発明の作用及び効果】
本発明は、軸１及び摺動体２に直接、縦湾曲形状の第一負荷溝１ａ及び第二負荷溝２ａを形成した構成であるから、従来の軸21及び摺動体22に夫々第一負荷溝21ａ及び第二負荷溝22ａを形成したレール体21ｂ・22ｂを取り付ける構成にとって必須の、軸１及び摺動体２にレール体を付設するための曲面を形成する必要がなく、よって、専用の機器等を用いず、汎用機器による加工が可能となり、当然、この軸１及び摺動体２にレール体を取り付ける手間、また、曲面同士を調整する手間もかからず精度が向上し、回転中心位置精度も容易に高精度にすることができ、更に、部品点数を大幅に削減でき製作が極めて容易となる。
【００１７】
以上、本発明は、極めて容易且つコスト安に製作できる極めて実用性に秀れた画期的な摺動装置となる。
【００１８】
【発明の実施の形態】
図２は本発明の一実施例を図示したものであり、以下に説明する。
【００１９】
本実施例は、軸１に対して摺動体２が縦湾曲線摺動するように設けられた摺動装置であって、軸１と摺動体２との間には縦湾曲形状の負荷路３が設けられ、この負荷路３には該負荷路３を転動移動する複数の転動体４が配設され、前記負荷路３は、軸１と摺動体２に夫々対向状態となるように形成された縦湾曲形状の第一負荷溝１ａと第二負荷溝２ａとで構成され、この第一負荷溝１ａは軸１と一体に構成されており、また、第二負荷溝２ａは摺動体２と一体に構成されているものである。
【００２０】
即ち、本実施例は、従来の縦湾曲線摺動する摺動装置のように、軸及び摺動体に別体で設けられるレール体に形成された第一負荷溝及び第二負荷溝により負荷路を形成したものでなく、軸１及び摺動体２に夫々直接形成した第一負荷溝１ａ及び第二負荷溝２ａにより負荷路３を形成した（レール体と軸若しくは摺動体とを一体化した）ものである。
【００２１】
従って、部品点数が削減されて組み立てが容易となり、しかも、剛性が向上するのは勿論、左右一対の第一負荷溝１ａを形成する加工基準面は一つの平坦面となり、同様に左右一対の第二負荷溝２ａを形成する加工基準面も一つの平坦面となるから極めて容易且つ精密に前記第一負荷溝１ａ及び第二負荷溝２ａを形成できる。
【００２２】
各部を具体的に説明すると、軸１は上面に凹縦湾曲面１’を有し、下面に平坦面を有する断面視略四角形状のものが採用されている。この軸１には、基部２ｂの左右に袖部２ｃ・２ｄを有する断面視略逆凹形状の摺動体２が被嵌されている。
【００２３】
また、摺動体２にして前記軸１の凹縦湾曲面１’と対向する基部２ｂの下面及び袖部２ｃ・２ｄの下面は、夫々該凹縦湾曲面と略合致する凸縦湾曲面２ｂ’・２ｃ’・２ｄ’に設定されている。
【００２４】
従って、軸１と摺動体２との間隙を可及的に縮小でき、それだけ小型化を図ることができる。
【００２５】
尚、本実施例においては、前述のように軸１と摺動体２とに夫々縦湾曲面を形成しているが、軸１と摺動体２との対向面（凹縦湾曲面１’と凸縦湾曲面２ｂ’）を平面とした構成としても良く、この場合には、一層加工が容易となり、コスト安に製作できることになる。
【００２６】
軸１の両側面には縦湾曲形状の第一負荷溝１ａが形成され、摺動体２の左右の袖部２ｃ・２ｄの内面にして前記第一負荷溝１ａの対向位置には縦湾曲形状の第二負荷溝２ａが夫々形成されている。
【００２７】
この第一負荷溝１ａは、軸１の下面に形成された平坦面を加工基準面として形成されており、具体的には、第一負荷溝１ａはこの平坦面と平行な接線を有する縦湾曲形状に形成されている。尚、凹縦湾曲面１’もこの平坦面を加工基準面として形成される。
【００２８】
また、第二負荷溝２ａは、摺動体２の上面に形成された平坦面を加工基準面として形成されており、具体的には、第二負荷溝２ａはこの平坦面と平行な接線を有する縦湾曲形状に形成されている。尚、凸湾曲面２ｂ’・２ｃ’・２ｄ’もこの平坦面を加工基準面として形成される。
【００２９】
本実施例においては、軸１の下面及び摺動体２の上面に夫々第一負荷溝１ａ及び第二負荷溝２ａの加工基準面となる平坦面を形成しているが、この平坦面は軸１及び摺動体２の側面等の他の面に形成しても良い。側面を平坦面とし、この平坦面を加工基準面とした場合には、該平坦面と垂直な接線を有する縦湾曲形状となるように形成する。
【００３０】
第一負荷溝１ａ及び第二負荷溝２ａは夫々断面視略横Ｖ字状に形成されている。この第一負荷溝１ａ及び第二負荷溝２ａにより負荷路３は断面視略正菱形状となる。
【００３１】
負荷路３には、転動体保持器５が配設される。この転動体保持器５は、板体５ａに、転動体４が転動可能な状態で保持される転動体保持窓５ｂを所定間隔で複数設けたものであり、この転動体保持器５の両側が第一負荷溝１ａ及び第二負荷溝２ａの中央に形成される溝８に嵌入される。この転動体保持器５に、複数の転動体４が所定間隔をおいて保持される。この転動体保持器５は第一負荷溝１ａ及び第二負荷溝２ａと略同形状の縦湾曲形状に設定されている。
【００３２】
尚、転動体保持器５の板体５ａとしては、前記縦湾曲形状になじみやすいように、湾曲方向に可撓性を有するものが採用される。この可撓性は、合成樹脂等の可撓性を有する素材に起因するものや、板体５ａを細かな板体から構成し、この細かな板体をリンク機構等を介して屈曲自在に連結した構成とすることに起因するものでも良い。
【００３３】
転動体４としては円柱体が採用され、これらの円柱体は隣接する円柱体の軸芯線が直角に交叉する状態で配設されている。
【００３４】
以上、本実施例は、摺動機構として公知のクロスローラ機構を採用しているが、勿論ボールを転動体として配設した構成等、他の摺動機構を採用しても良い。
【００３５】
また、軸１及び摺動体２の摺動方向両端部には、前記転動体保持器５の抜けを防止するためのストッパーネジ７が螺合する螺子孔６が形成されている。
【００３６】
更に、本実施例においては、前記軸１及び摺動体２に形成した平坦面を取付基準面として被取付部材に取り付け可能に設定されている。即ち、本実施例は、軸１及び摺動体２における加工基準面と取付基準面とが一致した構成である。
【００３７】
具体的には、上述のように第一負荷溝１ａ及び第二負荷溝２ａは、軸１若しくは摺動体２に設けた加工基準面と平行な接線を有する縦湾曲形状に設定しているから、軸１若しくは摺動体２を所定の場所に取り付ける際、この加工基準面は、摺動体２の摺動軌道の曲率中心と負荷路３の曲率中心とを一致させる際の面としても用いることができる。
【００３８】
従って、組み立て及び取り付けの際に必要な基準面数が少なく、誤差の重畳を可及的に阻止することができ、極めて精度に秀れたものとなる。
【００３９】
本実施例は上述のように構成したから、従来の軸21及び摺動体22に夫々第一負荷溝21ａ及び第二負荷溝22ａを形成したレール体21ｂ・22ｂを取り付ける構成に比し、部品点数が大幅に削減でき、湾曲面同士の複雑な調整が不要となり製作が極めて容易となる。
【００４０】
また、加工基準面と取付基準面が単一で一致しているため、極めて高精度な曲線摺動が可能となる。
【００４１】
更に、前記軸１若しくは摺動体２に設けた平坦面を加工基準面として第一負荷溝１ａ及び第二負荷溝２ａを形成するため、縦湾曲線摺動する摺動装置で重要な回転中心位置精度を容易に精度良く得ることができる。
【００４２】
その上、部品点数が少なく調整が容易であるから、組み立て時間が短くなり、極めてコスト安となり、しかも、購入したユーザーも面倒な調整をする必要なく容易に使用することができる。
【００４３】
よって、本実施例は、極めて容易且つコスト安に製作できる極めて実用性に秀れた画期的な摺動装置となる。
【図面の簡単な説明】
【図１】 従来例の説明斜視図である。
【図２】 本実施例の分解説明斜視図である。
【符号の説明】
１ 軸
１ａ 第一負荷溝
２ 摺動体
２ａ 第二負荷溝
３ 負荷路
４ 転動体
５ 転動体保持器[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding device.
[0002]
[Prior art and problems to be solved by the invention]
As a conventional sliding device that slides along a vertical curve line, there is the sliding device shown in FIG. Specifically, a longitudinally curved rail body in which a longitudinally curved rail body 21b and a second loaded groove 22a are formed on the shaft 21 and the sliding body 22, respectively. 22b is provided such that the first load groove 21a and the second load groove 22a face each other to form a load path 23, and the load path 23 includes a plurality of rolling elements that roll along the load path 23. 24 is disposed, and the rolling elements 24 are disposed in a state where a predetermined interval is maintained by the rolling element holder 25.
[0003]
In the case of the sliding device shown in FIG. 1, the load path 23 is provided at one place on each of the left and right sides. Reference numeral 27 in the figure denotes a stopper screw that prevents the rolling element holder 25 from coming off.
[0004]
By the way, the conventional sliding device that slides in the longitudinal curve line as shown in FIG. 1 has the following drawbacks.
[0005]
(1) The production of the longitudinally curved rail bodies 21b and 22b is much more laborious than the production of the linear rail bodies.
[0006]
(2) Further, the shaft 21 and the sliding body 22 to which the rail bodies 21b and 22b are attached must also have curved surfaces that match the longitudinally curved shape of the rail bodies 21b and 22b, and the longitudinally curved rail body 21b.・ Like the production of 22b, it takes a lot of work. In particular, the production of the shaft 21 and the sliding body 22 requires a geometrical intersection between a flat surface and a curved surface, and machining with a general-purpose device is extremely difficult. It is inevitable.
[0007]
(3) Moreover, when attaching the longitudinally curved rail bodies 21b and 22b to the curved surfaces of the shaft 21 and the sliding body 22, it is necessary to adjust the curved surfaces, and it is difficult to perform the mounting work with high accuracy. In terms of cost, it is inevitable that costs will increase.
[0008]
The present invention solves the above-mentioned problems, and by forming a longitudinally curved load groove directly on the shaft and the sliding body, the number of parts can be greatly reduced compared to the prior art, which makes it extremely easy to manufacture. The present invention provides an innovative sliding device with excellent practicality.
[0009]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0010]
A sliding device provided such that a sliding body 2 slides in a longitudinally curved line with respect to a shaft 1, and a longitudinally curved load path 3 is provided between the shaft 1 and the sliding body 2. The load path 3 is provided with a plurality of rolling elements 4 that roll and move along the load path 3, and the load path 3 is formed so as to face the shaft 1 and the sliding body 2. The first load groove 1a and the second load groove 2a having a longitudinally curved shape are formed integrally with the shaft 1, and the second load groove 2a is formed by sliding the slide. The first load groove 1a is formed with a flat surface formed on the lower surface of the shaft 1 as a machining reference surface, and the first load groove 1a The second load groove 2a is formed on the upper surface of the sliding body 2 and has a longitudinally curved shape having a tangent line parallel to the flat surface formed on the lower surface. The second load groove 2a is formed in a longitudinally curved shape having a tangent line parallel to the flat surface formed on the upper surface of the sliding body 2, and this axis is formed as a processing reference surface. the flat surface formed on the first and sliding body 2 respectively, the curvature of the shaft 1 and the time of attaching the sliding body 2 in the mounted member, the sliding body 2 of the sliding track center of curvature and the load path 3 those of the sliding device, characterized in that the reference plane Mounting for matching the center.
[0011]
Further, in the sliding device according to claim 1, as the sliding body 2, a base portion 2 b and a substantially reverse concave shape in cross-sectional view having sleeve portions 2 c and 2 d on the left and right sides of the base portion 2 b are adopted. The lower surface of the base portion 2b is set to a convex longitudinally curved surface 2b ′, which relates to a sliding device.
[0012]
3. A sliding device according to claim 2, wherein the upper surface of the shaft 1 facing the lower surface of the base 2b of the sliding body 2 is substantially coincident with the convex vertical bending surface 2b 'of the base 2b of the sliding body 2. The present invention relates to a sliding device characterized by being set to 1 ′.
[0013]
Further, in the sliding device according to any one of claims 2 and 3, the lower surfaces of the left and right sleeve portions 2c and 2d of the sliding body 2 are convex vertical curves similar to the convex vertical curved surfaces 2b 'of the base portion 2b. The present invention relates to a sliding device characterized by being set on the surfaces 2c ′ and 2d ′.
[0014]
Further, in the sliding device according to any one of claims 2 to 4, the first load groove 1a constituting the load path 3 is provided on the left and right side surfaces of the shaft 1, and the load path 3 The second load groove 2a constituting the sliding device 2 is provided on the inner surfaces of the left and right sleeve portions 2c and 2d of the sliding body 2 and relates to a sliding device.
[0015]
Moreover, the sliding device of any one of Claims 1-5 WHEREIN: The said load path 3 is provided with the rolling element holder 5 which hold | maintains the said rolling elements 4 at predetermined intervals. This relates to the sliding device.
[0016]
[Action and effect of the invention]
In the present invention, the first load groove 1a and the second load groove 2a having a longitudinally curved shape are formed directly on the shaft 1 and the sliding body 2, so that the first load groove is formed on the conventional shaft 21 and the sliding body 22, respectively. It is not necessary to form a curved surface for attaching the rail body to the shaft 1 and the sliding body 2, which is essential for the configuration for attaching the rail bodies 21 b and 22 b formed with 21 a and the second load groove 22 a. Can be processed by general-purpose equipment, and naturally, the accuracy is improved without the trouble of attaching the rail body to the shaft 1 and the sliding body 2 and the trouble of adjusting the curved surfaces, and the rotational center position accuracy is also improved. High accuracy can be achieved easily, and the number of parts can be greatly reduced, making the production extremely easy.
[0017]
As described above, the present invention is an epoch-making sliding device with excellent practicality that can be manufactured very easily and at low cost.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 illustrates one embodiment of the present invention, which will be described below.
[0019]
The present embodiment is a sliding device provided so that the sliding body 2 slides in a longitudinally curved line with respect to the shaft 1, and the longitudinally curved load path 3 is provided between the shaft 1 and the sliding body 2. The load path 3 is provided with a plurality of rolling elements 4 that roll and move along the load path 3, and the load path 3 is formed so as to be opposed to the shaft 1 and the slide body 2, respectively. The first load groove 1a and the second load groove 2a having a longitudinally curved shape are formed. The first load groove 1a is formed integrally with the shaft 1, and the second load groove 2a is formed by the sliding body 2. It is comprised integrally with.
[0020]
That is, in this embodiment, the load path is formed by the first load groove and the second load groove formed in the rail body provided separately from the shaft and the slide body as in the conventional sliding device that slides in the longitudinal curve line. The load path 3 is formed by the first load groove 1a and the second load groove 2a directly formed on the shaft 1 and the sliding body 2 respectively (the rail body and the shaft or the sliding body are integrated). Is.
[0021]
Accordingly, the number of parts is reduced, the assembly is facilitated, the rigidity is improved, and the processing reference surface for forming the pair of left and right first load grooves 1a is a single flat surface. Since the processing reference surface for forming the two load grooves 2a is also a single flat surface, the first load groove 1a and the second load groove 2a can be formed very easily and precisely.
[0022]
Specifically, the shaft 1 has a substantially rectangular shape in cross-sectional view having a concave longitudinal curved surface 1 'on the upper surface and a flat surface on the lower surface. The shaft 1 is fitted with a sliding body 2 having a substantially inverted concave shape in cross-sectional view having sleeve portions 2c and 2d on the left and right sides of the base portion 2b.
[0023]
Further, the lower surface of the base 2b and the lower surfaces of the sleeve portions 2c and 2d facing the concave vertical curved surface 1 ′ of the shaft 1 as the sliding body 2 are respectively convex convex curved surfaces 2b ′ that substantially match the concave vertical curved surfaces. It is set to 2c 'and 2d'.
[0024]
Therefore, the gap between the shaft 1 and the sliding body 2 can be reduced as much as possible, and the size can be reduced accordingly.
[0025]
In the present embodiment, the longitudinal curved surface is formed on the shaft 1 and the sliding body 2 as described above, but the opposing surface (the concave longitudinal curved surface 1 ′ and the convex surface) of the shaft 1 and the sliding body 2 are formed. The longitudinal curved surface 2b ′) may be a flat surface. In this case, the processing is further facilitated and the manufacturing cost can be reduced.
[0026]
First load grooves 1a having a longitudinally curved shape are formed on both side surfaces of the shaft 1, and the longitudinally curved first load grooves 1a are formed on the inner surfaces of the left and right sleeve portions 2c and 2d of the sliding body 2 at positions opposite to the first load grooves 1a. Second load grooves 2a are respectively formed.
[0027]
The first load groove 1a is formed with a flat surface formed on the lower surface of the shaft 1 as a processing reference surface. Specifically, the first load groove 1a has a longitudinal curve having a tangent parallel to the flat surface. It is formed into a shape. The concave vertical curved surface 1 ′ is also formed with this flat surface as a processing reference surface.
[0028]
The second load groove 2a is formed with a flat surface formed on the upper surface of the sliding body 2 as a processing reference surface. Specifically, the second load groove 2a has a tangent line parallel to the flat surface. It is formed in a vertically curved shape. The convex curved surfaces 2b ′, 2c ′, and 2d ′ are also formed using this flat surface as a processing reference surface.
[0029]
In this embodiment, flat surfaces serving as processing reference surfaces of the first load groove 1a and the second load groove 2a are formed on the lower surface of the shaft 1 and the upper surface of the sliding body 2, respectively. Further, it may be formed on another surface such as a side surface of the sliding body 2. When the side surface is a flat surface and this flat surface is used as a processing reference surface, it is formed to have a longitudinally curved shape having a tangent line perpendicular to the flat surface.
[0030]
The first load groove 1a and the second load groove 2a are each formed in a substantially horizontal V shape in sectional view. Due to the first load groove 1a and the second load groove 2a, the load path 3 has a substantially rhomboid shape in a sectional view.
[0031]
In the load path 3, a rolling element holder 5 is disposed. This rolling element holder 5 is provided with a plurality of rolling element holding windows 5b, which are held in a state in which the rolling element 4 can roll, on the plate body 5a at predetermined intervals. Is inserted into a groove 8 formed at the center of the first load groove 1a and the second load groove 2a. A plurality of rolling elements 4 are held by the rolling element holder 5 at a predetermined interval. The rolling element cage 5 is set to a longitudinally curved shape that is substantially the same shape as the first load groove 1a and the second load groove 2a.
[0032]
In addition, as the plate body 5a of the rolling element holder 5, one having flexibility in the bending direction is adopted so as to be easily adapted to the longitudinally curved shape. This flexibility is caused by a flexible material such as synthetic resin, or the plate body 5a is composed of a fine plate body, and the fine plate body is flexibly connected via a link mechanism or the like. It may be caused by having the configuration described above.
[0033]
Cylindrical bodies are employed as the rolling elements 4, and these cylindrical bodies are disposed in a state in which the axis lines of adjacent cylindrical bodies intersect at right angles.
[0034]
As described above, this embodiment employs a known cross roller mechanism as a sliding mechanism, but other sliding mechanisms such as a configuration in which balls are arranged as rolling elements may be employed.
[0035]
Further, at both ends in the sliding direction of the shaft 1 and the sliding body 2, screw holes 6 into which stopper screws 7 for preventing the rolling element holder 5 from coming off are screwed are formed.
[0036]
Further, in the present embodiment, the flat surface formed on the shaft 1 and the sliding body 2 is set to be attachable to the member to be attached using the attachment reference surface. In other words, the present embodiment has a configuration in which the machining reference surface and the attachment reference surface of the shaft 1 and the sliding body 2 coincide with each other.
[0037]
Specifically, as described above, the first load groove 1a and the second load groove 2a are set in a vertically curved shape having a tangent line parallel to the processing reference surface provided on the shaft 1 or the sliding body 2. When the shaft 1 or the sliding body 2 is attached to a predetermined place, the processing reference surface can also be used as a surface for matching the center of curvature of the sliding track of the sliding body 2 with the center of curvature of the load path 3. .
[0038]
Therefore, the number of reference planes required for assembly and attachment is small, and error superposition can be prevented as much as possible, so that the accuracy is excellent.
[0039]
Since the present embodiment is configured as described above, the number of parts is smaller than the conventional configuration in which the rail bodies 21b and 22b formed with the first load groove 21a and the second load groove 22a are attached to the shaft 21 and the sliding body 22, respectively. Can be drastically reduced, and complicated adjustment between curved surfaces is not required, making the manufacture extremely easy.
[0040]
In addition, since the machining reference plane and the mounting reference plane are identical and coincide with each other, it is possible to slide the curve with extremely high accuracy.
[0041]
Further, since the first load groove 1a and the second load groove 2a are formed by using the flat surface provided on the shaft 1 or the sliding body 2 as a processing reference surface, the rotation center position important in the sliding device that slides in the longitudinally curved line. The accuracy can be easily obtained with high accuracy.
[0042]
In addition, since the number of parts is small and adjustment is easy, the assembly time is shortened, the cost is extremely low, and the purchased user can easily use it without having to make troublesome adjustments.
[0043]
Therefore, the present embodiment is an epoch-making sliding device with excellent practicality that can be manufactured very easily and at low cost.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view of a conventional example.
FIG. 2 is an exploded perspective view of the present embodiment.
[Explanation of symbols]
1 axis 1a first load groove 2 sliding body 2a second load groove 3 load path 4 rolling element 5 rolling element cage

Claims (6)

軸に対して摺動体が縦湾曲線摺動するように設けられた摺動装置であって、前記軸と前記摺動体との間には縦湾曲形状の負荷路が設けられ、この負荷路には該負荷路を転動移動する複数の転動体が配設され、前記負荷路は、前記軸と前記摺動体に夫々対向状態となるように形成された縦湾曲形状の第一負荷溝と第二負荷溝とで構成され、この第一負荷溝は前記軸と一体に構成されており、また、前記第二負荷溝は前記摺動体と一体に構成されており、前記第一負荷溝は、前記軸の下面に形成された平坦面を加工基準面として形成され、且つ、この第一負荷溝は前記軸の下面に形成された平坦面と平行な接線を有する縦湾曲形状に形成され、前記第二負荷溝は、前記摺動体の上面に形成された平坦面を加工基準面として形成され、且つ、この第二負荷溝は前記摺動体の上面に形成された平坦面と平行な接線を有する縦湾曲形状に形成され、この軸及び摺動体に形成された前記平坦面は夫々、前記軸及び前記摺動体を被取付部材に取り付ける際、前記摺動体の摺動軌道の曲率中心と前記負荷路の曲率中心とを一致させるための取付基準面であることを特徴とする摺動装置。A sliding device provided such that a sliding body slides in a longitudinally curved line with respect to a shaft, and a longitudinally curved load path is provided between the shaft and the sliding body, and the load path includes Is provided with a plurality of rolling elements that roll and move along the load path, and the load path includes a first load groove having a longitudinally curved shape and a first load groove formed so as to face the shaft and the sliding body, respectively. The first load groove is formed integrally with the shaft, the second load groove is formed integrally with the sliding body, and the first load groove is: The flat surface formed on the lower surface of the shaft is formed as a processing reference surface, and the first load groove is formed in a vertically curved shape having a tangent line parallel to the flat surface formed on the lower surface of the shaft, The second load groove is formed with a flat surface formed on the upper surface of the sliding body as a processing reference surface, and the first load groove Load groove is formed vertically curved shape having a top surface formed flat surface parallel to the tangent of the sliding body, the flat surface formed on the shaft and the sliding member are each, said shaft and said sliding body when attached to the mounting member, the sliding device characterized in that said a reference plane mounting for the center of curvature of the sliding trajectory to match the center of curvature of the load path of the sliding body. 請求項１記載の摺動装置において、前記摺動体として基部と該基部の左右に袖部を有する断面視略逆凹形状のものが採用され、この摺動体の前記基部の下面は凸縦湾曲面に設定されていることを特徴とする摺動装置。  2. The sliding device according to claim 1, wherein the sliding body has a base portion and a substantially reverse concave shape in cross-sectional view having sleeve portions on the left and right sides of the base portion, and the lower surface of the base portion of the sliding body has a convex longitudinal curved surface. The sliding device characterized by being set to. 請求項２記載の摺動装置において、前記摺動体の基部の下面と対向する前記軸の上面は前記摺動体の基部の凸縦湾曲面と略合致する凹縦湾曲面に設定されていることを特徴とする摺動装置。  3. The sliding device according to claim 2, wherein the upper surface of the shaft facing the lower surface of the base portion of the sliding body is set to a concave vertical curved surface that substantially matches the convex vertical curved surface of the base portion of the sliding body. A sliding device characterized. 請求項２，３いずれか１項に記載の摺動装置において、前記摺動体の左右の袖部の下面は前記基部の凸縦湾曲面と同様の凸縦湾曲面に設定されていることを特徴とする摺動装置。  4. The sliding device according to claim 2, wherein the lower surfaces of the left and right sleeve portions of the sliding body are set to have a convex longitudinal curved surface similar to the convex longitudinal curved surface of the base portion. A sliding device. 請求項２〜４いずれか１項に記載の摺動装置において、前記負荷路を構成する前記第一負荷溝は前記軸の左右の側面に設けられ、また、前記負荷路を構成する前記第二負荷溝は前記摺動体の左右の袖部の内面に設けられていることを特徴とする摺動装置。  5. The sliding device according to claim 2, wherein the first load groove that constitutes the load path is provided on left and right side surfaces of the shaft, and the second load that constitutes the load path. The load device is provided with inner surfaces of left and right sleeve portions of the sliding body. 請求項１〜５いずれか１項に記載の摺動装置において、前記負荷路には、前記転動体同士を所定間隔で保持する転動体保持器が設けられていることを特徴とする摺動装置。  The sliding device according to any one of claims 1 to 5, wherein a rolling element holder for holding the rolling elements at a predetermined interval is provided in the load path. .
JP2003166789A 2003-06-11 2003-06-11 Sliding device Expired - Fee Related JP4376003B2 (en)

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JP4883788B2 (en) * 2007-03-28 2012-02-22 シグマ光機株式会社 Arc slide device
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