JPH0457909B2 - - Google Patents
Info
- Publication number
- JPH0457909B2 JPH0457909B2 JP58182071A JP18207183A JPH0457909B2 JP H0457909 B2 JPH0457909 B2 JP H0457909B2 JP 58182071 A JP58182071 A JP 58182071A JP 18207183 A JP18207183 A JP 18207183A JP H0457909 B2 JPH0457909 B2 JP H0457909B2
- Authority
- JP
- Japan
- Prior art keywords
- feed screw
- screw shaft
- shaft
- rotating body
- ring
- 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 - Lifetime
Links
Classifications
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2056—Telescopic screws with at least three screw members in coaxial arrangement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
(a) 発明の技術分野
本発明は、載物台を上下動させるリフト等に用
いるねじ軸構造に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a screw shaft structure used in a lift or the like for moving a stage up and down.
(b) 従来技術と問題点
例えば載物台を上下動させるリフトにおいて、
リフト量の大きいものは一般にワイヤロープを介
して載物台を上下動させているが、各種製造装置
の付帯設備としてのリフトは、リフト量が比較的
小さいこと及びリフト量の制御が駆動体の制御に
よつて容易に行われること等の理由により、載物
台をねじ軸で直接的に上下動させるリフト（ジヤ
ツキ）が使用されている。(b) Conventional technology and problems For example, in a lift that moves the stage up and down,
In cases where the lift amount is large, the stage is generally moved up and down via a wire rope, but for lifts used as ancillary equipment for various manufacturing equipment, the lift amount is relatively small and the control of the lift amount is dependent on the driver. For reasons such as ease of control, a lift is used to directly move the stage up and down using a screw shaft.
しかしながら、ねじ軸を用いたねじ対偶で載物
台を上下動させる従来のリフトは、リフト量に等
しいねじ対偶長さを必要とし、リフト量が比較的
大きいときはねじ軸がそれに追従して長くなるた
め、かかるリフトを付帯させる装置の据付面より
も低く据付けなければならない等の欠点があつ
た。 However, conventional lifts that move the workpiece table up and down with a pair of screws using a screw shaft require a length of the pair of screws equal to the amount of lift, and when the amount of lift is relatively large, the screw shaft follows and lengthens. Therefore, there are drawbacks such as the need to install such a lift lower than the installation surface of the equipment to which it is attached.
(c) 発明の目的
本発明の目的は、１対のねじ対偶を利用するこ
とにより上記問題点を除去するねじ軸を提供する
ことである。(c) Object of the invention The object of the invention is to provide a screw shaft that eliminates the above-mentioned problems by utilizing a pair of screws.
(d) 発明の構成
上記目的は本発明により送りねじ軸、回動体、
中空送りねじ軸、スプライン軸を有し、表面に送
りねじを有する送りねじ軸の下端は回転自在に垂
直に軸支され、回動体はシリンダチユーブと、そ
の上下端内周に固定されたリング状の上部めねじ
と下部めねじ及び下端外周にリング状に取付けら
れた歯車とよりなり、送りねじ軸の送りねじに螺
合する下端リング状めねじによつて送りねじ軸に
同軸に上下動可能に取付けられ、中空送りねじ軸
は送りねじ軸と回動体間に同心的に嵌挿され、表
面には回動体の上部リング状めねじと螺合しかつ
送りねじ軸の送りねじとは逆送りねじを有し、上
端に固定された載物台は上下動可能で回転が阻止
され、スプライン軸は上下端で送りねじ軸に並行
に回転自在に軸支され、軸上には回動体の歯車と
螺合するリング状歯車が軸と共に回動し、かつ回
動体の上下動と共に上下動自在に取付けられ、ス
プライン軸と共に同一方向に回転する送りねじ軸
により、回動体は送りねじ軸の軸方向に移動する
と共にスプライン軸の歯車によつて送りねじ軸と
反対方向に回転し、回動体の上部めねじで中空送
りねじ軸は軸方向に移動することを特徴とするね
じ軸構造によつて達成される。(d) Structure of the invention The above object is achieved by the present invention.
The lower end of the feed screw shaft, which has a hollow feed screw shaft and a spline shaft and has a feed screw on its surface, is rotatably supported vertically. It consists of an upper female thread, a lower female thread, and a gear attached in a ring shape to the outer periphery of the lower end, and the lower end ring-shaped female thread screws into the feed screw of the feed screw shaft, making it possible to move up and down coaxially with the feed screw shaft. The hollow feed screw shaft is fitted concentrically between the feed screw shaft and the rotating body, and the surface is threaded with the upper ring-shaped female thread of the rotating body, and the feed screw of the feed screw shaft is opposite to the feed screw. The workpiece table, which has a screw and is fixed to the upper end, can move up and down and is prevented from rotating.The spline shaft is rotatably supported at the upper and lower ends parallel to the feed screw shaft, and the gear of the rotating body is mounted on the shaft. A ring-shaped gear screwed into the spline shaft rotates together with the shaft, and is mounted so that it can move up and down as the rotating body moves up and down.The rotating body rotates in the axial direction of the feed screw shaft due to the feed screw shaft rotating in the same direction as the spline shaft. This is achieved by a screw shaft structure characterized in that the hollow feed screw shaft moves in the axial direction and rotates in the opposite direction to the feed screw shaft by the gears of the spline shaft, and the hollow feed screw shaft moves in the axial direction by the upper female thread of the rotating body. be done.
(e) 発明の実施例
以下、図面を用いて本発明に係わる実施例を説
明する。(e) Embodiments of the invention Examples of the invention will be described below with reference to the drawings.
第１図は本発明のねじ軸の基本構成における主
要部分の構成と動作を説明するための図であり、
(イ)は前記ねじ軸を短縮した側断面図、(ロ)は前記ね
じ軸を延長させた側断面図である。 FIG. 1 is a diagram for explaining the configuration and operation of the main parts in the basic configuration of the screw shaft of the present invention,
(A) is a side sectional view of the screw shaft shortened, and (B) is a side sectional view of the screw shaft extended.
第１図において、ねじ軸１は送りねじ軸２と中
空送りねじ軸３と回動体４にて構成し、回動体４
は送りねじ軸２のねじ２ａに螺合するリング状め
ねじ５と中空送りねじ軸３の送りねじ３ａに螺合
するリング状めねじ６とシリンダチユーブ７とよ
り構成され、中空送りねじ軸３の下端部には回動
体７の内筒面にそつて滑動するスライダ８が固着
されている。 In FIG. 1, a screw shaft 1 is composed of a feed screw shaft 2, a hollow feed screw shaft 3, and a rotating body 4.
The hollow feed screw shaft 3 is composed of a ring-shaped female screw 5 screwed into the thread 2a of the feed screw shaft 2, a ring-shaped female screw 6 screwed into the feed screw 3a of the hollow feed screw shaft 3, and a cylinder tube 7. A slider 8 that slides along the inner cylindrical surface of the rotating body 7 is fixed to the lower end of the rotating body 7.
このように構成されたねじ軸１は、送りねじ軸
２と中空送りねじ軸３と回動体４とがほぼ同じ長
さであり、送りねじ２ａと３ａとはそのリードが
逆方向になつている。そして第１図イに示す如く
短縮させたとき、送りねじ軸２が中空送りねじ軸
３に嵌挿し、中空送りねじ軸３は回動体４に嵌挿
される。 In the screw shaft 1 configured in this way, the feed screw shaft 2, the hollow feed screw shaft 3, and the rotating body 4 have approximately the same length, and the leads of the feed screws 2a and 3a are in opposite directions. . When it is shortened as shown in FIG.
そこで例えば、送りねじ軸２の軸首２ｂを上下
動しないように固定し、中空送りねじ３が回動し
ない回り止めを設け、回動体４を送りねじ２ａの
リード方向に回転させると、第１図ロに示す如く
送りねじ２ａとリング状めねじ５のねじ対偶によ
り回動体４は回転しながら送りねじ軸２に沿つて
上昇する。同時に送りねじ３ａとリング状めねじ
６のねじ対偶により、中空送りねじ軸３は回動体
４よりも大きく上昇し、中空送りねじ軸３の上昇
量は１対の前記ねじ対偶の累積値になる。 Therefore, for example, if the shaft neck 2b of the feed screw shaft 2 is fixed so that it does not move up and down, a detent is provided to prevent the hollow feed screw 3 from rotating, and the rotating body 4 is rotated in the lead direction of the feed screw 2a, the first As shown in FIG. 2, the rotary body 4 moves upward along the feed screw shaft 2 while rotating due to the screw pair of the feed screw 2a and the ring-shaped female screw 5. At the same time, due to the screw pair of the feed screw 3a and the ring-shaped female screw 6, the hollow feed screw shaft 3 rises more than the rotating body 4, and the amount of rise of the hollow feed screw shaft 3 becomes the cumulative value of the pair of screws. .
次いで、回動体４を前記回転の逆方向に回転さ
せると、送りねじ軸２と中空送りねじ軸３は回動
体４の中に嵌挿され、第１図イに示す状態に戻
る。従つて、ねじ軸１の最大延長時長さは１対の
ねじ対偶それぞれの最大ストロークを加えた値に
なる。 Next, when the rotary body 4 is rotated in the opposite direction of the rotation, the feed screw shaft 2 and the hollow feed screw shaft 3 are fitted into the rotary body 4, returning to the state shown in FIG. 1A. Therefore, the maximum extended length of the screw shaft 1 is the sum of the maximum strokes of each pair of screws.
第２図において、スプライン軸２０は構成部材
２３，２４に、また送りねじ軸１３は２３に軸支
され、夫々ベルト車２５，２６が取付けられ、ベ
ルト２７で連結され図示しないウオーム歯車装置
でスプライン軸２０を回動させると、送りねじ軸
１３も回動される。またスプライン軸２０には歯
車２２が取付けられているが、この場合スプライ
ン軸の軸方向に溝が設けられ、歯車２２には溝に
係合するピンが設けられているため、歯車２２は
回転方向には固定され上下動は自在となつてい
る。 In FIG. 2, the spline shaft 20 is supported by component members 23 and 24, and the feed screw shaft 13 is supported by 23, belt pulleys 25 and 26 are respectively attached, and the spline shaft 20 is connected by a belt 27 and splined by a worm gear device (not shown). When the shaft 20 is rotated, the feed screw shaft 13 is also rotated. Further, a gear 22 is attached to the spline shaft 20, but in this case, a groove is provided in the axial direction of the spline shaft, and a pin that engages with the groove is provided in the gear 22, so that the gear 22 is attached in the rotation direction. It is fixed and can move up and down freely.
さらにシリンダチユーブ１７と、その下端の同
軸に固定された下部リング状めねじ１５及び上端
に同軸に固定された上部リング状めねじ１６より
構成される回動体１２の中心部には送りねじ軸１
３が同軸的に位置し、かつ回動体の筒内で送りね
じ軸との間には同心的に中空送りねじ軸１４が設
けられ、回動体のリング状めねじ１５は送りねじ
軸１３のねじと、またリング状めねじ１６と中空
送りねじ軸１４のねじとは夫々図示の如く螺合さ
れ、かつ中空送りねじ軸の上部には載物台１８が
取り付けられ、載物台の一端に設けられた摺動軸
１９は構成部材２４の孔中に上下動しうる如く挿
入されている。 Furthermore, a feed screw shaft 1 is provided at the center of the rotary body 12, which is composed of a cylinder tube 17, a lower ring-shaped female thread 15 coaxially fixed at its lower end, and an upper ring-shaped female thread 16 coaxially fixed at its upper end.
3 are located coaxially, and a hollow feed screw shaft 14 is provided concentrically between the feed screw shaft and the feed screw shaft within the cylinder of the rotating body, and the ring-shaped female thread 15 of the rotating body is connected to the thread of the feed screw shaft 13. The ring-shaped female screw 16 and the screw of the hollow feed screw shaft 14 are screwed together as shown in the figure, and a stage 18 is attached to the upper part of the hollow feed screw shaft, and a stage 18 is installed at one end of the stage. The sliding shaft 19 is inserted into a hole in the component 24 so as to be able to move up and down.
一方回動体の下端周囲には歯車２８が固着さ
れ、これはスプライン軸の歯車２２と噛み合い、
また回動体の下端にはフランジ付金具２９で連動
金具２１が取付けられ、この連動金具２１は、そ
れが回動体の上昇とともに歯車２２も上昇するよ
うに歯車２２に係合している。 On the other hand, a gear 28 is fixed around the lower end of the rotating body, and this meshes with the gear 22 of the spline shaft.
Further, an interlocking metal fitting 21 is attached to the lower end of the rotating body by a flanged metal fitting 29, and this interlocking metal fitting 21 engages with the gear 22 so that the gear 22 also rises as the rotating body rises.
この場合送りねじ軸１３と中空送りねじ軸１４
のねじ方向は逆となつている。 In this case, the feed screw shaft 13 and the hollow feed screw shaft 14
The screw direction is reversed.
かかる構成においてスプライン軸２０を回転さ
せるとベルト車２５、ベルト２７、ベルト車２６
を介し送りねじ軸１３はスプライン軸と同一方向
に回転する。この場合歯車２２もスプライン軸と
共に回転し、それは回動体１２の歯車２８と噛み
合つているため回動体１２は送りねじ軸１３とは
逆方向に回転し、しかも送りねじ軸とリング状め
ねじ１５は螺合しているので、回動体は回転しな
がら上昇する。 In such a configuration, when the spline shaft 20 is rotated, the belt pulley 25, the belt 27, and the belt pulley 26 are rotated.
The feed screw shaft 13 rotates in the same direction as the spline shaft. In this case, the gear 22 also rotates together with the spline shaft, and since it meshes with the gear 28 of the rotating body 12, the rotating body 12 rotates in the opposite direction to the feed screw shaft 13, and moreover, the gear 22 rotates in the direction opposite to the feed screw shaft 13. are screwed together, so the rotating body moves up while rotating.
かかるリング状めねじ１５と送りねじ軸１３と
のねじ対偶による回動体の上下動は送りねじ軸と
回動体１２のそれぞれの回動による蓄積量とな
る。 The vertical movement of the rotary body due to the screw pairing of the ring-shaped female thread 15 and the feed screw shaft 13 becomes an accumulation amount due to the respective rotations of the feed screw shaft and the rotary body 12.
一方回動体１２が回動しながら上下したとき、
回動体１２の上端部に固着されたリング状めねじ
１６と中空送りねじ軸１４の送りねじとは螺合
し、そのねじ対偶により中空送りねじ軸は上昇
し、それに固定された載物台１８はその摺動軸１
９が構成部材２４の孔中を摺動しながら上下動す
るようになる。 On the other hand, when the rotating body 12 moves up and down while rotating,
The ring-shaped female screw 16 fixed to the upper end of the rotating body 12 and the feed screw of the hollow feed screw shaft 14 are screwed together, and the hollow feed screw shaft is raised by the pair of screws, and the stage 18 fixed thereto is the sliding shaft 1
9 comes to move up and down while sliding in the hole of the component 24.
なお第２図において、中空送りねじ軸１４の下
端部に突出する環状突起１４ａはスライダであ
る。 In FIG. 2, an annular projection 14a projecting from the lower end of the hollow feed screw shaft 14 is a slider.
このように構成されたリフト１１において、載
物台１８の上下動は送りねじ軸のリードと、中空
送りねじ軸１４のリードと、歯車２２，２８の歯
数比と、ベルト車２５，２６の直径比により決定
される。また送りねじ軸１３と中空送りねじ軸１
４のストロークを同じにしたとき、両者のストロ
ークに無駄の少ない設計となる。そこで、例えば
送りねじ軸１３の送りねじがピツチ６mm、中空送
りねじ軸１４の送りねじがピツチ８mmであり前記
歯数比が１：１であるときは、ベルト車２５の直
径D1とベルト車２６の直径D2の比を
D1／D2＝（８−６）／６＝１／３
の如く設定することによりねじピツチの差が補正
され、該ピツチ差により生じる無駄が解消される
ことになる。 In the lift 11 configured in this way, the vertical movement of the stage 18 is determined by the lead of the feed screw shaft, the lead of the hollow feed screw shaft 14, the tooth ratio of the gears 22 and 28, and the ratio of the belt wheels 25 and 26. Determined by diameter ratio. Also, the feed screw shaft 13 and the hollow feed screw shaft 1
When the strokes of 4 are made the same, the design results in less waste in both strokes. Therefore, for example, when the feed screw of the feed screw shaft 13 has a pitch of 6 mm, the feed screw of the hollow feed screw shaft 14 has a pitch of 8 mm, and the ratio of the number of teeth is 1:1, the diameter D 1 of the belt wheel 25 and the belt wheel By setting the ratio of the diameter D 2 of 26 as D 1 /D 2 = (8-6)/6 = 1/3, the difference in thread pitch can be corrected, and the waste caused by the pitch difference can be eliminated. become.
これはリフト１１の強度付与上または載物台１
８の停止位置精度確保上の理由等により送りねじ
軸１３の送りねじと中空送りねじ軸１４の送りね
じのピツチが異なる場合に大きな効果を持つもの
である。 This is done to give strength to the lift 11 or to the stage 1.
This has a great effect when the pitch of the feed screw of the feed screw shaft 13 and the feed screw of the hollow feed screw shaft 14 are different due to reasons such as securing the accuracy of the stop position in the case of No. 8.
なお上記基本構成において、回動体１２とスプ
ライン軸２０との連動に、１対のベルト車２５，
２６とタイミングベルト２７及び１対の歯車２
２，２８を使用しているが、それらの連動機構を
タイミングベルト又は歯車による構成に統一して
もよい。 In the above basic configuration, a pair of belt pulleys 25,
26, a timing belt 27, and a pair of gears 2
2 and 28 are used, but their interlocking mechanism may be unified to a timing belt or gears.
(f) 発明の効果
以上説明した如く本発明によれば、中空送りね
じ軸と該ねじ軸に嵌挿可能な送りねじ軸とを用い
た２組のねじ対偶を利用して、ねじ軸の伸縮が行
なわれるため最短縮時には最大延長時の1/2以下、
かつその間を無段階に実現し、さらに前記中空送
りねじ軸と前記送りねじ軸のねじピツチが異なる
とき、そのことにより生じる構造上の無駄をなく
すねじピツチ補正手段を実現したことは、リフト
等に適用してそれらを小型化する効果が顕著であ
る。(f) Effects of the Invention As explained above, according to the present invention, the screw shaft can be expanded and contracted by using two pairs of screws each using a hollow feed screw shaft and a feed screw shaft that can be inserted into the screw shaft. is carried out, so the shortest time is less than 1/2 of the maximum length,
The realization of a thread pitch correction means that seamlessly realizes the difference between the hollow feed screw shaft and the feed screw shaft, and also eliminates the structural waste caused by the difference in thread pitch between the hollow feed screw shaft and the feed screw shaft, is a great advantage for lifts, etc. The effect of applying them to miniaturize them is remarkable.
第１図は本発明のねじ軸の基本構成における主
要部分の構成と動作を説明するための側断面図、
第２図は本発明をリフトの形態で構成した前記ね
じ軸の基本構成を示す側断面図である。
図中において、１はねじ軸、２，１３は送りね
じ軸、３，１４は中空送りねじ軸、４，１２は回
動体（シリンダチユーブ）、５，６，１５，１６
はリング状めねじ、２０はスプライン軸、２２，
２８は歯車、２５，２６はベルト車を示す。
FIG. 1 is a side sectional view for explaining the configuration and operation of the main parts in the basic configuration of the screw shaft of the present invention;
FIG. 2 is a sectional side view showing the basic structure of the screw shaft according to the present invention in the form of a lift. In the figure, 1 is a screw shaft, 2 and 13 are feed screw shafts, 3 and 14 are hollow feed screw shafts, 4 and 12 are rotating bodies (cylinder tubes), 5, 6, 15, 16
is a ring-shaped female thread, 20 is a spline shaft, 22,
28 is a gear, and 25 and 26 are belt wheels.
Claims (1)
ライン軸を有し、 表面に送りねじを有する送りねじ軸の下端は回
転自在に垂直に軸支され、 回動体はシリンダチユーブと、その上下端内周
に固定されたリング状の上部めねじと下部めねじ
及び下端外周にリング状に取付けられた歯車とよ
りなり、送りねじ軸の送りねじに螺合する下端リ
ング状めねじによつて送りねじ軸に同軸に上下動
可能に取付けられ、 中空送りねじ軸は送りねじ軸と回動体間に同心
的に嵌挿され、表面には回動体の上部リング状め
ねじと螺合しかつ送りねじ軸の送りねじとは逆送
りねじを有し、上端に固定された載物台は上下動
可能で回転が阻止され、 スプライン軸は上下端で送りねじ軸に並行に回
転自在に軸支され、軸上には回動体の歯車と螺合
するリング状歯車が軸と共に回動し、かつ回動体
の上下動と共に上下動自在に取付けられ、 スプライン軸と共に同一方向に回転する送りね
じ軸により、回動体は送りねじ軸の軸方向に移動
すると共にスプライン軸の歯車によつて送りねじ
軸と反対方向に回転し、回動体の上部めねじで中
空送りねじ軸は軸方向に移動することを特徴とす
るねじ軸構造。[Claims] 1. It has a feed screw shaft, a rotating body, a hollow feed screw shaft, and a spline shaft, the lower end of the feed screw shaft having the feed screw on its surface is rotatably supported vertically, and the rotating body is a cylinder. It consists of a tube, a ring-shaped upper female thread and a lower female thread fixed to the inner periphery of the upper and lower ends, and a ring-shaped gear attached to the outer periphery of the lower end, and the lower end ring-shaped screws into the feed screw of the feed screw shaft. It is attached to the feed screw shaft by a female thread so that it can move up and down coaxially, and the hollow feed screw shaft is fitted concentrically between the feed screw shaft and the rotating body, and the upper ring-shaped female thread of the rotating body and the upper ring-shaped female thread on the surface are inserted. It is threaded and has a feed screw opposite to the feed screw of the feed screw shaft.The stage fixed at the top end can move up and down and is prevented from rotating, and the spline shaft rotates parallel to the feed screw shaft at the top and bottom ends. A ring-shaped gear that is freely supported on the shaft and is threaded with the gear of the rotating body rotates with the shaft, and is attached so that it can move up and down as the rotating body moves up and down, and rotates in the same direction as the splined shaft. The rotating body moves in the axial direction of the feed screw shaft due to the feed screw shaft, and rotates in the opposite direction to the feed screw shaft by the gears on the spline shaft. A screw shaft structure characterized by movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18207183A JPS6073163A (en) | 1983-09-30 | 1983-09-30 | Construction of screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18207183A JPS6073163A (en) | 1983-09-30 | 1983-09-30 | Construction of screw shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6073163A JPS6073163A (en) | 1985-04-25 |
| JPH0457909B2 true JPH0457909B2 (en) | 1992-09-16 |
Family
ID=16111838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18207183A Granted JPS6073163A (en) | 1983-09-30 | 1983-09-30 | Construction of screw shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6073163A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2587921B2 (en) * | 1986-05-29 | 1997-03-05 | 株式会社島津製作所 | Operating table |
| US5722304A (en) * | 1994-03-01 | 1998-03-03 | Honeywell Inc. | Linear actuator |
| US5769184A (en) * | 1996-09-27 | 1998-06-23 | Brooks Automation, Inc. | Coaxial drive elevator |
| US20110290057A1 (en) * | 2009-02-16 | 2011-12-01 | Corcost Limited | Gearbox |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55171746U (en) * | 1979-05-30 | 1980-12-09 | ||
| JPS55179252U (en) * | 1979-06-11 | 1980-12-23 | ||
| EP0097169B1 (en) * | 1981-12-18 | 1986-04-30 | Lars International S.A. Luxembourg | Linear drive device with two motors |
-
1983
- 1983-09-30 JP JP18207183A patent/JPS6073163A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6073163A (en) | 1985-04-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |