JPS6179063A - Straight movement device - Google Patents

Straight movement device

Info

Publication number
JPS6179063A
JPS6179063A JP20038084A JP20038084A JPS6179063A JP S6179063 A JPS6179063 A JP S6179063A JP 20038084 A JP20038084 A JP 20038084A JP 20038084 A JP20038084 A JP 20038084A JP S6179063 A JPS6179063 A JP S6179063A
Authority
JP
Japan
Prior art keywords
screw shaft
moving body
shaft
nut
linear motion
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.)
Pending
Application number
JP20038084A
Other languages
Japanese (ja)
Inventor
Hitoshi Funato
均 船戸
Yoshihiko Takahashi
高橋 美彦
Norihiko Koizumi
小泉 則彦
Noriyoshi Ishikawa
典良 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP20038084A priority Critical patent/JPS6179063A/en
Publication of JPS6179063A publication Critical patent/JPS6179063A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20Screw mechanisms
    • F16H25/2003Screw mechanisms with arrangements for taking up backlash
    • F16H25/2009Screw mechanisms with arrangements for taking up backlash with radial preloading

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE:To cause a moving body to accurately move straight without playing, by securing bearings to the moving body, and fitting the bearings slidably on a screw shaft. CONSTITUTION:A screw shaft 8 is coupled to a motor 7 as a driver. A nut 10 is screw-engaged on the screw shaft 8. Bearings 9a, 9b are secured to one side of a moving body 12 and coupled to the nut 11 by an elastic member 10. A guide 13 projects from another side of the moving body 12 and is slidably engaged on a guide rail 14. Since the screw shaft 8 also serves as a guide shaft, the rotative position of the screw shaft and the location of the moving body 12 are prevented from not corresponding to each other as in the case that the screw shaft and a guide shaft are separately provided. This results in enabling the smooth movement of the moving body 12.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、1.駆動源と連結して回転するねじ軸と、
このねじ軸にねじ結合するナツトとを利用して回転運動
を直線運動に変換する直動装置VC関するもので、タリ
えば画像読取装置や11j冨工作機械のX−Y移動テー
ブルの直線移動を高精1度に行えるようにしたことを特
徴とする原動装置に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention includes the following features: 1. a screw shaft that rotates in conjunction with a drive source;
This relates to a linear motion device VC that converts rotational motion into linear motion using a nut screwed to this screw shaft. This invention relates to a driving device characterized in that it can be operated with one precision.

〔従来の技術〕[Conventional technology]

従来のこの種装置として、第3図に示すように、駆動源
であるモータ(1)にベルト等の伝達機構(la)を介
して連結する回転ねじ軸(2)にねじ結合するナンド(
3)を移動体(4)に固定し、また、上記ねじ@(2)
と平行に配設されたガイド軸(6)上に、移動体(4)
に固定されたベアリング(5a)、(5b)を摺動可能
に取付けると共に、ねじ軸(2)及びガイド軸(6)と
平行に配設されたカイトレール(掻上に、移動体(4)
に突設されたカイト部材(131を摺動可能に係合して
成る構造のものが知られている。このように構成される
装置は、モータ(1)の回転に伴って回転するねじ軸(
2)とナツト(3)との関係により回転運動を直線運動
に変換して、移動体を直線的に往復移動させる場合に利
用される。
As shown in Fig. 3, a conventional device of this kind is a NAND (2) screwed to a rotary screw shaft (2) connected to a motor (1) as a drive source via a transmission mechanism (LA) such as a belt.
3) to the moving body (4), and also the above screw @ (2)
The movable body (4) is placed on the guide shaft (6) arranged parallel to the
Bearings (5a) and (5b) fixed to
A structure is known in which a kite member (131) protruding from the shaft is slidably engaged with the kite member (131). (
2) and the nut (3) to convert rotational motion into linear motion, which is used to linearly reciprocate a moving body.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、上記従来のこの稲装置においては、ベア
リング(5a)、(5b)がガイド軸(6)上を摺動す
るためには、ねじ軸(2)とカイト軸(6)との平行精
度を高精度に維持する必要があるか、実際には困難が伴
うため、ガイド軸(6)とベアリング(5a)、 (5
b)との間に遊びをもたせるための隙間が形成されてい
る。しかし、この隙間により、移動体(4)とガイド軸
(6)との間でがたつきが生じ、特に往復移動を行う場
合では、ねじ軸(2)の回転位置と移動体(4)の位置
が対応しないという欠点があった。また、この欠点を除
去するためにガイド軸(6)とベアリング(5a)、 
(5b)間の隙間を小さくすると、ねじ軸(2)とガイ
ド軸(6)間の平行度に狂いが生じて、ねじ軸(2)と
ガイド軸(6)にラジアル荷重がかかり、そのため移動
体(4)が円滑に移動できなくなるという不都合があっ
た。更には、この種装置においては、互いに平行なねじ
軸(2)とガイド軸(6)及びガイドレール(141の
3本が必要となるため、構成部材が多くなると共に、装
置全体が大型となるなどの問題もあった。
However, in this conventional rice device, in order for the bearings (5a) and (5b) to slide on the guide shaft (6), the parallel accuracy of the screw shaft (2) and the kite shaft (6) is required. Since it is necessary to maintain high precision or is difficult in practice, the guide shaft (6) and bearing (5a), (5
b) A gap is formed to provide play. However, this gap causes backlash between the movable body (4) and the guide shaft (6), and especially when performing reciprocating movement, the rotational position of the screw shaft (2) and the movable body (4) There was a drawback that the positions did not correspond. In addition, in order to eliminate this drawback, a guide shaft (6) and a bearing (5a),
(5b) If the gap between them is made small, the parallelism between the screw shaft (2) and the guide shaft (6) will be distorted, and a radial load will be applied to the screw shaft (2) and the guide shaft (6), which will cause movement. There was an inconvenience that the body (4) could not move smoothly. Furthermore, this type of device requires three parallel screw shafts (2), guide shafts (6), and guide rails (141), which increases the number of structural members and increases the size of the entire device. There were also other problems.

〔問題点を解決するための手段〕[Means for solving problems]

この発明は、上記問題を解決することを企図してなされ
たもので、上記技術的課題を解決する手段として、駆動
源と連結して回転するねじ軸と、このねじ軸にねじ結合
するナツトとを利用して回転運動を直線運動に変換する
直動装置において、直線変位しうる移動体に固定された
ベアリングを上記ねし軸に摺動可能に取付(すて成るこ
とを特徴とする直動装置を提供しようとするものである
This invention was made with the intention of solving the above-mentioned problem, and as a means for solving the above-mentioned technical problem, it includes a screw shaft that rotates in connection with a drive source, and a nut that is screwed to the screw shaft. In a linear motion device that converts rotational motion into linear motion using The aim is to provide equipment.

〔作用〕[Effect]

上記の技術的挙段は以下のように作用する。 The above technical measures work as follows.

駆動源の回転に伴って回転するねじ軸とナツトにより、
回転運動が直線運動に変換され、ナツトを固定する移動
体に固定されたベアリングが上記ねじ軸をガイド軸とし
て摺動することにより、移動体の直線往復運動が可能と
なる。
The screw shaft and nut rotate with the rotation of the drive source,
The rotational motion is converted into linear motion, and the bearing fixed to the moving body that fixes the nut slides on the screw shaft as a guide shaft, thereby allowing the moving body to reciprocate linearly.

したがって、ねじ軸かガイド軸を兼用するため、ガイド
軸を別個に設けた場合に生じるねじ軸の回転位置と移動
体の位置との対応不一致を解消することができると共に
、移動体の円滑な移動を可能にし、また、構成部材の削
減及び装置の小型化を° 図れるようにしたことを特徴
とするものである。
Therefore, since the screw shaft and the guide shaft can be used together, it is possible to eliminate the mismatch between the rotational position of the screw shaft and the position of the movable object that would occur when a separate guide shaft is provided, and also to ensure smooth movement of the movable object. The present invention is characterized in that the number of structural members can be reduced and the device can be made smaller.

〔実施例〕〔Example〕

以下にこの発明の実施例を図面に基づいて詳細に説明す
る。
Embodiments of the present invention will be described in detail below based on the drawings.

第1図はこの発明の直動装置の平面図を示すもので、こ
の発明の直動装置は、駆動源であるモータ(7)に連結
して回転するねじ軸(8)と、このねじ軸(8)にねじ
結合してねじ軸(8)の回転運動を直線運動に変換する
ナラ) +101と、直線変位しうる移動体021の一
側に固定されると共に、後述する弾性部材00)を介し
て上記ナツト(111に連結されてねじ軸(8)上に摺
動可能に取付けられるベアリング(9a) 、 (9b
)とで主要部が構成されている。この場合、上記移動体
(121の他側にはカイト部材(131が外側に向って
突設されており、このガイド部材(131は、保持部材
(151をもって上記ねじ軸(8)と平行に配設された
カイトレール(14I上に摺動可能に係合されている。
FIG. 1 shows a plan view of a linear motion device of the present invention. (8) to convert the rotational motion of the screw shaft (8) into linear motion) +101, and is fixed to one side of the movable body 021 capable of linear displacement, and has an elastic member 00) to be described later. Bearings (9a), (9b) connected to the nut (111) and slidably mounted on the screw shaft (8)
) and the main part is made up of. In this case, a kite member (131) is provided on the other side of the movable body (121), and this guide member (131 is arranged parallel to the screw shaft (8) with a holding member (151). The kite rail (14I) is slidably engaged on the provided kite rail (14I).

また、上記ナンド(11)は生別状になっており、かつ
、このナンド(111を両ベアリング(9a)、 (9
b)間に配置した状態にて、板ばね等で構成される弾性
部材111)を介して互いに連結されて、弾性方を付勢
してナラl−tillがねじ軸(8)をラジアル方向へ
押圧しうるよってなっている。
In addition, the above-mentioned Nando (11) is in a separate shape, and this Nando (111) is connected to both bearings (9a), (9
b) In the state arranged between them, they are connected to each other via an elastic member 111) composed of a leaf spring, etc., and the elastic member is biased so that the l-till moves the screw shaft (8) in the radial direction. It is designed so that it can be pressed.

なお、上記ねじ軸(8)とベアリング(9a)、 (9
b)の係合態様は、第2図に示すように、台形ねじ等で
構成されるねじ軸(8)の複数のねじ山頂面(8a)に
ベアリング(9a)、(”9b)の内周面が摺接する構
造となっている。この場合、ねじ軸(8)のねじ山形状
は必ずしも台形ねじである必要はないが、好ましくはね
じ山頂部に平坦部を有する台形ねじあるいは角形ねじな
どを使用することにより、ベアリング(”9a)。
In addition, the screw shaft (8) and the bearing (9a), (9
In the engagement mode b), as shown in Fig. 2, a plurality of threaded crests (8a) of a screw shaft (8) constituted by a trapezoidal thread, etc. are attached to the bearing (9a), and the inner circumference of the bearing (9b). The screw shaft (8) has a structure in which the surfaces are in sliding contact.In this case, the thread shape of the screw shaft (8) does not necessarily have to be a trapezoidal thread, but preferably a trapezoidal thread or a square thread with a flat part at the top of the thread. By using bearings ("9a).

(9b)の摺動を円滑かつ確実に行うことができる。The sliding movement (9b) can be performed smoothly and reliably.

上記のように構成されるこの発明の直動装置において、
モータ(7)を、駆動させてねじ軸(8)を回転すると
、このねじ軸(8)にねじ結合するナツト(litがね
じ軸(8)上に摺動可能に取付けられているベアリング
(9a)、 (9b)に弾性部材101を介して連結さ
れているため、ナラl−fillは回転運動を規制され
つつねじ軸(8)上を移動する。したがって、ベアリン
グ(9a)’。
In the linear motion device of the present invention configured as described above,
When the motor (7) is driven to rotate the screw shaft (8), a nut (lit) screwed to the screw shaft (8) is attached to a bearing (9a) slidably mounted on the screw shaft (8). ) and (9b) via the elastic member 101, the l-fill moves on the screw shaft (8) while its rotational movement is restricted.Therefore, the bearing (9a)'.

(9b)を固定した移動体f121はねじ軸(8)及び
カイトレール圓に沿って直線移動し、モータ(7)の回
転方向を変換させることにより、移動体(12)は往複
運動を行うことができる。セして、移動体f121に取
付(すられる画像読取装置等(図示せず)の直綽往復動
作を行うことができる。
The movable body f121 to which (9b) is fixed moves linearly along the screw shaft (8) and the kite rail circle, and by changing the rotation direction of the motor (7), the movable body (12) performs reciprocating motion. Can be done. The image reading device or the like (not shown) attached to the movable body f121 (not shown) can be reciprocated in a straight line.

なお、ナンドaυは弾性部材(10)の弾曲力を付勢し
てねじ軸(8)の山部あるいは谷部にねじ結合するため
、ねじ軸(8)が多少変形しても、追従して回転運動を
直線運動に変換することができる。
In addition, since the NAND aυ applies the elastic force of the elastic member (10) and is threadedly connected to the peaks or troughs of the screw shaft (8), it will not follow even if the screw shaft (8) is slightly deformed. rotational motion can be converted into linear motion.

〔発明の効果〕〔Effect of the invention〕

以上に説明したように、この発明の直動装置によれば、
回転運動を直線運動に変換する機構の一部であるねじ軸
に、移動体に固定されたベアリングを摺動可能に取付け
て成るため、以下のような効果が得られる。すなわち、 1)ねじ軸が従来のガイド軸を兼用するため、移動体は
がたつくことなく、高精度の直線移動を行うことができ
る。
As explained above, according to the linear motion device of the present invention,
Since a bearing fixed to a moving body is slidably attached to a screw shaft that is part of a mechanism that converts rotational motion into linear motion, the following effects can be obtained. That is, 1) Since the screw shaft also serves as a conventional guide shaft, the moving body can perform highly accurate linear movement without rattling.

2)ねじ軸の回転により、ベアリングとの静摩擦をなく
すことができ、移動体の応答・註を良好にすることがで
きる。
2) By rotating the screw shaft, static friction with the bearing can be eliminated, and the response and note of the moving body can be improved.

:3)構成部材の削減及び′装置の小型化を図ることが
できるなどの曖れた効果が得られるため、その利用価値
は顕著である。
:3) Its utility value is remarkable because it has vague effects such as reducing the number of structural members and making the device more compact.

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

第1図はこの発明の直動装置の平面図、第2図は第1図
のII−II線に沿う拡大断面図、第3図は従来の直動
装置の平面図である。 (符号説明) (7)・・・・・・モータ(駆動源) (8)・・・・・・ねじ軸 (9a)(9b)・・・・・・ベアリング(1(11・
・・・・・弾性部材 (11)・・・・・・ナツト (121・・・・・・移動体
FIG. 1 is a plan view of a linear motion device of the present invention, FIG. 2 is an enlarged sectional view taken along line II-II in FIG. 1, and FIG. 3 is a plan view of a conventional linear motion device. (Explanation of symbols) (7)...Motor (drive source) (8)...Screw shaft (9a) (9b)...Bearing (1 (11)
...Elastic member (11) ... Nut (121 ... Moving object

Claims (2)

【特許請求の範囲】[Claims] (1)駆動源と連結して回転するねじ軸と、このねじ軸
にねじ結合するナットとを利用して回転運動を直線運動
に変換する直動装置において、直線変位しうる移動体に
固定されたベアリングを上記ねじ軸に摺動可能に取付け
て成ることを特徴とする直動装置。
(1) In a linear motion device that converts rotational motion into linear motion using a screw shaft that rotates in conjunction with a drive source and a nut that is screwed to the screw shaft, the device is fixed to a moving body capable of linear displacement. A linear motion device characterized in that a bearing is slidably attached to the screw shaft.
(2)ナットをねじ軸に押圧すべくナットとベアリング
とを弾性部材を介して連結して成る特許請求の範囲第1
項記載の直動装置。
(2) Claim 1, in which the nut and the bearing are connected via an elastic member to press the nut against the screw shaft.
Linear motion device as described in section.
JP20038084A 1984-09-27 1984-09-27 Straight movement device Pending JPS6179063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20038084A JPS6179063A (en) 1984-09-27 1984-09-27 Straight movement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20038084A JPS6179063A (en) 1984-09-27 1984-09-27 Straight movement device

Publications (1)

Publication Number Publication Date
JPS6179063A true JPS6179063A (en) 1986-04-22

Family

ID=16423354

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20038084A Pending JPS6179063A (en) 1984-09-27 1984-09-27 Straight movement device

Country Status (1)

Country Link
JP (1) JPS6179063A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106457A (en) * 1986-10-14 1988-05-11 サントル・スイス・デレクトロニク・エ・ド・ミクロテクニク・ソシエテ・アノニム Screw actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106457A (en) * 1986-10-14 1988-05-11 サントル・スイス・デレクトロニク・エ・ド・ミクロテクニク・ソシエテ・アノニム Screw actuator

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