JPS58113656A - Diametrical movement converting device - Google Patents

Abstract

PURPOSE:To enable a rotary shaft to be positioned in its radial direction with high accuracy and as well to enhance the rigidity and impact-resistant capability thereof, by allowing two eccentric bushings disposed between the rotary shaft and a cylindrical casing to reversely rotate at a same angular speed. CONSTITUTION:Pinions 15, 16 rotate first and second eccentric bushings 6, 9 in the reverse direction at a same angular speed through mating ring gears 13, 8 when the rotary shaft 17 is predeterminedly rotated with respect to a cylindrical casing 2, while the first and second bushings 6, 9 slide in the cylindrical casing 2 and the first bushing 6, respectively. At this time, since the eccentric bushings 6, 9 reversely rotate together, the deflected wall parts of both bushings are operated so that they are chronogically intensified in the vertical direction, that is, during a half cycle, the thin wall parts of both bushings are in the lower side but the thick wall parts thereof are in the upper side, but during the next half cycle, they take the reverse positions. Thereby, a shaft 12 reciprocatingly moves in the vertical direction on the diameter of the cylindrical casing 2 in the vertical direction as viewed on the drawing.

Description

【発明の詳細な説明】 く技術分類〉 開示技術は回転運動をして直線運動に変換させる工作機
械等の工具機械素子の技術分野に属する。[Detailed Description of the Invention] Technological Classification> The disclosed technology belongs to the technical field of tool machine elements such as machine tools that convert rotational motion into linear motion.

〈要旨の解説〉 而して、この発明は工作機械のポーリング加工を行う際
等に用いるボーリングバイト等の加工径セット移動等如
利用される円運動調節径方向直線運動変換装置において
、ケーシングにバイト等に対する軸を有する回動体を回
動自在に内装し、又、該回動体のギヤに係合するギヤ機
構を装備して該ギヤ機構を回動することにより上記軸を
径方向に直線的に変位させるようにした径方向変位変換
装置に関する発明であり、特に、上記ケーシングを円筒
状となし、その等肉厚内面に摺動可能にして端面にクラ
ウンギヤ状リングギヤな有する第１の偏心ブツシュを内
接嵌装し、又、端面に同じくクラウンギヤ状リングギヤ
な有した第２の偏心ブツシュを該第１の偏心ブツシュの
偏肉厚内面に摺動可能に嵌装させ、更に該第２の偏心ブ
ツシュの偏肉厚内面に前記軸を嵌装させ、而して上記円
筒状ケーシングの直径上に軸方向に直交して回動軸を回
動可能に軸装させ被回動軸に一体に設けた１対のビニオ
ンを上記第１．２の偏心ブツシュσ端面リングギヤの各
々に両偏心ブツシュが等角速度で逆方向に回動可能なギ
ヤ比で噛み合うようにした径方向運動変換装置に係る発
明である。<Explanation of the gist> The present invention is a circular motion adjustment radial linear motion conversion device used for moving the machining diameter set of a boring tool used when performing polling of a machine tool, etc. A rotary body having a shaft for the rotary body is rotatably installed inside the body, and a gear mechanism that engages with the gear of the rotary body is installed, and by rotating the gear mechanism, the shaft can be linearly moved in the radial direction. The invention relates to a radial displacement converting device for displacement, and in particular, the casing has a cylindrical shape, and a first eccentric bushing having a crown gear-like ring gear on an end surface is slidable on the inner surface of the same thickness. A second eccentric bushing, which is internally fitted and also has a crown gear-like ring gear on the end face, is slidably fitted into the unevenly thick inner surface of the first eccentric bushing, and The shaft is fitted into the unevenly thick inner surface of the bushing, and the rotating shaft is rotatably mounted perpendicular to the axial direction on the diameter of the cylindrical casing, and is integrally provided with the rotated shaft. The invention relates to a radial motion converting device in which a pair of pinions are engaged with each of the 1.2 eccentric bush σ end face ring gears at a gear ratio that allows both eccentric bushes to rotate in opposite directions at a constant angular velocity. be.

〈従来技術〉 周知の如く、例えば、工作機械において、ポーリング加
工を行う場合、ボーリングバイトを取付けるボーリング
バーの径方向移動調節を行うが、この場合、直線運動を
規制する機構としては直線スライドやガイドに沿って行
っていた。<Prior art> As is well known, for example, when performing polling on a machine tool, the radial movement of the boring bar to which the boring bar is attached is adjusted. was going along.

又、通常一般的な直線運動機構としては厳密なものにス
コットラッセル機構、ノ・−ト機構等があり、近似直線
運動機構としてはワットの直線運針機構等があった。Further, as general linear motion mechanisms, there are strict ones such as Scott Russell mechanism and Note mechanism, and examples of approximate linear motion mechanisms include Watt's linear movement mechanism.

〈従来技術の問題点〉 さりながら、上述在来技術（（おいては前者は調整調度
が高く出せない難点があり、後者は剛性に劣り、耐衝撃
力に欠け、工作機械等には不向きである欠点があった。<Problems with the prior art> However, with the above-mentioned conventional technology, the former has the disadvantage of not being able to be adjusted to a high degree, and the latter has poor rigidity and lacks impact resistance, making it unsuitable for machine tools, etc. There was a certain drawback.

そして、工作機械においてバイトの径方向変換機構とし
ては特公昭５４−２４３３号公報もあるが、当該公報開
示技術はバイトの刃先が円を画く軌跡をたどり、円筒上
のすくい角、逃げ角が変化し、刃先位置が変化可能であ
っても切削条件が変化して精密な加工、内径寸法が調整
出来ないという不具合があった。There is also Japanese Patent Publication No. 54-2433 regarding a mechanism for changing the radial direction of a cutting tool in a machine tool, but the technology disclosed in this publication allows the cutting edge of the cutting tool to follow a circular trajectory, and the rake angle and relief angle on the cylinder change. However, even if the position of the cutting edge can be changed, the cutting conditions change, making precise machining and adjustment of the inner diameter impossible.

〈発明の目的〉 この発明の目的は上述従来技術に基づく工作機械工具等
の直線運動装置の問題点を解決すべき技術的課題とし、
円運動を直線運動に変換することによって高精度調整可
能であるように、又、周面摺動により常接として剛性を
増し、耐衝撃力を高め得るようにし、簡単な構成ながら
、極めて合理的設計にし、各種機械産業における変換運
動機構利用分野に益する優れた径方向運動変換装置を提
供せんとするものである。<Object of the invention> The object of the invention is to solve the problems of linear motion devices such as machine tool tools based on the above-mentioned prior art, and
High-precision adjustment is possible by converting circular motion into linear motion, and rigidity and impact resistance can be increased as a constant contact due to peripheral sliding, making it extremely rational despite its simple structure. The purpose of the present invention is to provide an excellent radial motion conversion device that is useful for the field of application of conversion motion mechanisms in various mechanical industries.

〈発明の構成〉 上述目的に沿い先述特許請求の範囲を要旨とするこの発
明の構成は前述問題点を解決するために円筒状ケーシン
グの直径上に軸装した回動軸を所定量回動させ、その１
対のビニオンが該円筒状ケーシング等の肉厚内面に嵌装
されている第１の偏心ブツシュの端部に設けたリングギ
ヤと該第１の偏心ブツシュの偏肉内面に嵌装された第２
の偏心ブツシュの端部に設げられたリングギヤに噛み合
って該第１．２の偏心ブツシュを互いに逆方向に、且つ
１等角速度で相対摺動回動させ、それにより該第２の偏
心ブツシュの偏肉内面に嵌装された軸をして上記円筒状
ケーシングの直径上を直線状態で変位するようにした技
術的手段を講じたものである。<Configuration of the Invention> In order to solve the above-mentioned problems, the configuration of the present invention, which is in accordance with the above-mentioned object and whose gist is the scope of the above-mentioned claims, is to rotate a rotating shaft mounted on the diameter of a cylindrical casing by a predetermined amount. , Part 1
A ring gear is provided at the end of a first eccentric bushing in which a pair of binions are fitted into the thick inner surface of the cylindrical casing, etc., and a second ring gear is fitted into the unevenly thick inner surface of the first eccentric bushing.
meshes with a ring gear provided at the end of the eccentric bushing to cause the first and second eccentric bushes to slide and rotate relative to each other in opposite directions and at a constant angular velocity, thereby A technical measure is taken in which a shaft fitted into the inner surface of the cylindrical casing is linearly displaced on the diameter of the cylindrical casing.

〈実施例−構成〉 次にこの発明の実施例を図面に基づいて説明すれば以下
の通りである。<Embodiments - Configuration> Next, embodiments of the present invention will be described below based on the drawings.

１はこの発明の要旨を成す径方向運動変換装置であり、
図示態様は図示都合上概略図として示されており、その
外側円筒状ケーシング２は等肉厚で内外面３．４が真円
で形成され、その内部には該内面３に摺接可能に真円外
面５を当接させて第１の偏心ブツシュ６が嵌装されてい
る。1 is a radial motion converting device which constitutes the gist of this invention,
The illustrated embodiment is shown as a schematic diagram for convenience of illustration, and the outer cylindrical casing 2 has the same wall thickness and the inner and outer surfaces 3.4 are perfectly circular. A first eccentric bushing 6 is fitted with the circular outer surface 5 in contact.

而して、該第１の偏心ブツシュ６は設定偏心度を有して
真円内面７を形成されると共にその一方の端面にクラウ
ンギヤ状リングギヤ８を刻設形成されている。The first eccentric bushing 6 has a perfectly circular inner surface 7 with a predetermined degree of eccentricity, and a crown gear-like ring gear 8 is engraved on one end surface thereof.

又、９は第２の偏心ブツシュであり、その真円外面１０
を上記第１の偏心ブツシュ６の内面７に摺接可能に当接
されて嵌装されており、設定偏心度の真円内面１１には
真円断面の軸１２が嵌装され、該第２の偏心ブツシュ９
の上記第１の偏心ブツシュ６と同じ側の端面にはクラウ
ンギヤ状のリングギヤ１３が刻設形成されている。Further, 9 is a second eccentric bushing, and its perfectly circular outer surface 10
is fitted so as to be slidably abutted on the inner surface 7 of the first eccentric bushing 6, and a shaft 12 with a perfectly circular cross section is fitted into the perfectly circular inner surface 11 of the set eccentricity. Eccentric bushing 9
A ring gear 13 in the form of a crown gear is engraved on the same end surface of the first eccentric bushing 6.

又、前記円筒状ケーシング２の、直径上に穿設した１対
の軸孔１４．１４にはビニオン１５．１６を一体にＭす
る回動軸１７が回動可能に軸装され、それらのビニオン
１５．１６は上記第１，２のリングギヤ１３．８に噛合
している。Further, a rotation shaft 17 that integrally holds the binions 15 and 16 is rotatably mounted in a pair of shaft holes 14 and 14 that are diametrically bored in the cylindrical casing 2. 15.16 meshes with the first and second ring gears 13.8.

尚、該ビニオン１５．１６の噛合とリングギヤ１３．８
の噛合い歯数は両偏心ブツシュ６・９が同一角速度で逆
回転（逆回転は歯数によるものではないが）する歯故に
設計されている。In addition, the engagement of the binions 15 and 16 and the ring gear 13.8
The number of meshing teeth is designed so that both eccentric bushes 6 and 9 rotate in opposite directions at the same angular velocity (though the reverse rotation is not dependent on the number of teeth).

又、組付けに際しては第１．２の偏心ブツシュ６．９の
偏肉部の位相を第２図に示す様に１８０゜異ならしめて
回動軸１７のビニオン１５．１６にそれらのリングギヤ
８．１３を噛合させるようにしてセットしておく。In addition, when assembling, the phases of the uneven thickness portions of the first and second eccentric bushes 6.9 are made to differ by 180 degrees as shown in FIG. Set them so that they mesh together.

〈実施例−作用〉 上述構成において、回動軸１７を円筒状ケーシング２に
対して所定に回動させると、ビニオン１５゜１６は噛合
リングギヤ１３．８を介して第１．２の偏心ブツシュ６
．９を同一角速度で逆方向にそれぞれ円筒状ケーシング
２、第１偏心ブツシユ６内に摺動しながら回転させる。<Embodiment - Effect> In the above-described configuration, when the rotation shaft 17 is rotated in a predetermined manner with respect to the cylindrical casing 2, the pinions 15 and 16 engage the first and second eccentric bushings 6 through the meshing ring gear 13.8.
．． 9 are rotated at the same angular velocity in opposite directions while sliding inside the cylindrical casing 2 and the first eccentric bushing 6, respectively.

而して、上述行程では偏心ブツシュ６．９が共に等遠道
回転するため、両者の偏肉部は共に経時的に上下に集約
されるように働き、半サイクルで両者の薄肉相互が下側
にそして、厚肉部が上側に、次の半サイクルではその逆
になるため、軸１２は円筒状ケーシング２の図上、上下
方向直径上を上下に往復運動する。In the above-mentioned process, since both eccentric bushes 6.9 rotate equidistantly, the uneven thickness portions of both act to be concentrated vertically over time, and in half a cycle, the thin walls of both are moved downward. Then, since the thick part is on the upper side and vice versa in the next half cycle, the shaft 12 reciprocates up and down on the diameter of the cylindrical casing 2 in the vertical direction in the drawing.

したがって、回動軸１７の円運動が軸１２の直線往復運
動に変換される。Therefore, the circular motion of the rotation shaft 17 is converted into a linear reciprocating motion of the shaft 12.

又、該回動軸１７の常回転の場合は該軸１２は上述の如
く直線往復運動をするが、回動軸１７を部分角度旋回す
るだけであるとそれに応じて軸１２は直線的に変位り動
することになる。In addition, when the rotating shaft 17 is constantly rotating, the shaft 12 makes a linear reciprocating motion as described above, but when the rotating shaft 17 is only rotated by a partial angle, the shaft 12 is linearly displaced accordingly. You will have to move around a lot.

く他の実施例〉 上述の基本動作を行うこの発明の径方向運動変換装置１
を工作機械のポーリング加工装置に用いた例の説明をす
ると、該径方向運動変換装置１をポーリング加工装置と
し、軸１２にボーリングバイトを取付けるようにし、円
筒状ケーシング４を主軸に適宜取付けるようにして所定
ポーリング加工を行う。Other Embodiments> Radial motion conversion device 1 of the present invention that performs the above-mentioned basic operation
To explain an example in which this is used in a polling device of a machine tool, the radial motion conversion device 1 is used as a polling device, a boring tool is attached to the shaft 12, and a cylindrical casing 4 is appropriately attached to the main shaft. Perform the predetermined poling process.

当該実施例１（おいてポーリング内径を所望内径に変え
たい場合、回動軸１７の軸端の円筒状ケーシング２部の
可視部（（ゲージ等を設けることにより該ゲージによっ
て所望に核回動軸１７を旋回させるとボーリングバイト
が軸１２を介して径方向に直線的に所定に変位々動し、
ポーリング径を変えることが可能となる。In Example 1, if you want to change the inner diameter of the pole to a desired inner diameter, you can use the visible part of the cylindrical casing 2 at the end of the rotating shaft 17 (by providing a gauge, etc. When the boring tool 17 is rotated, the boring tool moves in a predetermined manner linearly in the radial direction via the shaft 12.
It becomes possible to change the polling diameter.

このようにすることにより在来ポーリング加工装置の如
く、直線スライド部をネジやカム等テ調整する煩瑣な操
作は不要となり、又、加工精度も上り、作動部が全て面
摺動であり、ガタが来す、剛性も高く、耐衝撃性も良い
。By doing this, the complicated operations of adjusting the linear slide part with screws, cams, etc., as in conventional polling processing equipment, are no longer necessary, and the processing accuracy is also increased. All operating parts are surface sliding, so there is no backlash. It has high rigidity and good impact resistance.

〈他の実施例〉 尚、この発明の実施態様は上述工作機械のポーリング加
工装置の実施例に限るものでないことは勿論であり、例
えば、振動発生装置や直線往復運動装置、又、バイスや
ジグの締付装置等の移動力の拡大装置に用いたり、或は
、往復直線運動を利用して更に回動運動へ転用したりす
る等種々の態様が採用可能であり、又、偏心ブツシュの
偏心量を異、ならしめて楕円運動装置に応用する等のこ
とも可能である。<Other Embodiments> It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments of the polling device for a machine tool. Various modes can be adopted, such as using it as a device to expand the moving force such as a tightening device, or using the reciprocating linear motion and further converting it to rotational motion. It is also possible to apply it to an elliptical motion device by making the amount different.

〈発明の効果〉 以上この発明によれば、円運動を径方向の直線運動に変
換出来、しかもガイドやスライド部が無いためにスムー
ズな運動伝達が高出力で得られる優れた効果が奏される
。<Effects of the Invention> As described above, according to the present invention, circular motion can be converted into radial linear motion, and since there is no guide or sliding part, an excellent effect can be achieved in that smooth motion transmission can be obtained at high output. .

又、円筒状ケーシング、偏心ブツシュ、軸、回動軸等が
、円形部材で構成されるため各部品の成形加工精度が極
めて良く、したがって装置の精度が高くなる効果もある
。Furthermore, since the cylindrical casing, eccentric bushing, shaft, rotating shaft, etc. are composed of circular members, the molding precision of each part is extremely high, and therefore the precision of the device is also increased.

更に、円筒ケーシング内面に第１の偏心ブツシュが、又
、第１の偏心ブツシュの内面に第２の偏心ブツシュが、
そして、該第２の偏心ブツシュの内面に軸が摺接可能に
面当接されているために全面摺接が可能となり、したが
って、装置全体としての剛性が高く、一体化されて耐衝
撃性が良い優れた効果があり、耐摩耗性にも優れている
効果がある。Furthermore, a first eccentric bushing is provided on the inner surface of the cylindrical casing, and a second eccentric bushing is provided on the inner surface of the first eccentric bushing.
Since the shaft is in slidable surface contact with the inner surface of the second eccentric bushing, sliding contact is possible over the entire surface, and therefore, the entire device has high rigidity and is integrated with high impact resistance. It has good and excellent effects and has excellent wear resistance.

更に又、回動軸の回転角に対する軸の移動量の拡大率が
大きいので軸の移動精度が高くなる優れた効果も奏され
る。Furthermore, since the magnification of the amount of movement of the shaft relative to the rotation angle of the rotation shaft is large, an excellent effect of increasing the accuracy of movement of the shaft is also achieved.

而して、円筒状ケーシング内に第」、第２の偏心ブツシ
ュがそれぞれ内接して面摺動可能に嵌装されてそれらの
クラウンギヤ状リングギヤに回動軸のビニオンが噛合し
ていることにより、核間偏心ブツシュをして等角速度逆
回転を保証することが出来、それにより軸の直線保証が
可能となる優れた効果がある。The second and second eccentric bushes are respectively inscribed in the cylindrical casing and fitted so as to be slidable on their surfaces, and the pinion of the rotating shaft is meshed with the crown gear-like ring gear. , it is possible to guarantee constant angular speed reverse rotation by using an eccentric bushing between the cores, which has the excellent effect of making it possible to guarantee the straightness of the shaft.

そして、回動軸の旋回転のみで軸の移動量が現出出来る
ため、精度出しが高く出来る効果がある。Further, since the amount of movement of the shaft can be expressed only by turning the rotation shaft, there is an effect that accuracy can be increased.

加えて、工作機械のボーリングバイトのポーリング径変
えホルダーに利用出来たり、振動装置に利用出来たり、
又、締付は装置等にも利用出来る汎用性が高い利点もあ
る。In addition, it can be used as a holder for changing the diameter of boring bits in machine tools, as well as in vibration devices.
Further, the tightening method has the advantage of being highly versatile and can be used for devices and the like.

【図面の簡単な説明】[Brief explanation of the drawing]

図面はこの発明の基本的実施例の概略説明図であり、第
１図は装置の縦断面説明図、第２図は第１図■−■断面
図、第３図は第１の偏心ブツシュの斜視図、第４図は第
２の偏心ブツシュの斜視図、第５図は回動軸の斜視図で
ある。 ２・・・（円筒状）ケーシング、 １２・・・軸、　　　　　　　６．１０・・・回動体、
８．１３・・・ギヤ機構、　　・・□・１・−・径方向
運動変換装置、 ８・・・リングギヤ、 ６・・・第１の偏心ブツシュ、 １３・・・リングギヤ、 ９・・・第２の偏心ブツシュ、 １７・・・回動軸、　　　　　１５．１６・・・ビニオ
ン出願人　　篠　原　　　博 第５図The drawings are schematic explanatory diagrams of a basic embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional explanatory view of the device, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. FIG. 4 is a perspective view of the second eccentric bushing, and FIG. 5 is a perspective view of the rotating shaft. 2... (cylindrical) casing, 12... shaft, 6.10... rotating body,
8.13...Gear mechanism,...□・1...Radial motion conversion device, 8...Ring gear, 6...First eccentric bushing, 13...Ring gear, 9...Nth Eccentric bushing of No. 2, 17... Rotating shaft, 15.16... Binion applicant Hiroshi Shinohara Figure 5

Claims (1)

【特許請求の範囲】[Claims] ケーシングに対し軸を有する回動体を内装すると共に該
回動体に係合するギヤ機構を装備する上記軸に対する径
方向運動変換装置において、円筒状ケーシングに端面に
リングギヤを有する第１の偏心ブツシュな摺動自在に内
接させ、又該第１の偏心ブツシュに端面にリングギヤを
有すると共に軸を内装する第２・の偏心ブツシュを摺動
自在に内接させ、而して上記円筒状ケーシングに直交し
て軸装した回動軸に一体的に設けた１対のビニオンが上
記第１、第２の偏心ブツシュの各リングギヤに該第１、
第２の偏心ブツシュの等角速度逆回転を成すギヤ比で噛
合されていることを特徴とする径方向運動変換装置。In the radial motion converting device for the shaft, the casing is equipped with a rotating body having a shaft and a gear mechanism that engages with the rotating body, the cylindrical casing having a first eccentric bushing having a ring gear on its end surface. A second eccentric bushing having a ring gear on its end face and a shaft therein is slidably inscribed in the first eccentric bushing, and is perpendicular to the cylindrical casing. A pair of binions integrally provided on a rotating shaft mounted on a shaft are connected to each ring gear of the first and second eccentric bushings.
A radial motion converting device characterized in that the second eccentric bushing is meshed with a gear ratio that achieves constant angular speed reverse rotation.