JPS599350A - Thread feeding mechanism - Google Patents
Thread feeding mechanismInfo
- Publication number
- JPS599350A JPS599350A JP11672582A JP11672582A JPS599350A JP S599350 A JPS599350 A JP S599350A JP 11672582 A JP11672582 A JP 11672582A JP 11672582 A JP11672582 A JP 11672582A JP S599350 A JPS599350 A JP S599350A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- stage
- rotating speed
- expansion
- feeding mechanism
- 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.)
- Granted
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)
Abstract
Description
【発明の詳細な説明】
本発明は多段伸縮機構に係り、特に伸縮比が２以上を必
要とする場合に好適なねじ送り伸縮機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-stage telescoping mechanism, and particularly to a screw feed telescoping mechanism suitable when an expansion/contraction ratio of 2 or more is required.
従来のねじ送り機構は、回転運動をするねじ要素と回転
軸方向に直線運動をするねじ要素により構成され、前者
の１回転に対し、後者がねじのリードと等しい距離だけ
直線的に動く。ただし、後者が回転をすると、この関係
が保たれないことから、回り止めによって、拘束されて
いる。このようなねじ送り機構においては、伸縮這がね
じ部の長さによって制限される。従って、ねじ要素の全
長にわたって完全ねじ部があると仮定しても、伸縮長は
２つのねじ要素のうち短いほうの長さと等しく、伸縮比
は２未満である。ここで伸縮比とは、ねじ送り機構の最
大長さを最小長さで除した値としたうこのため、伸縮比
に２以上を必要とする機構には応用できなかった。A conventional screw feeding mechanism is composed of a screw element that rotates and a screw element that moves linearly in the direction of the rotation axis, and for each rotation of the former, the latter moves linearly by a distance equal to the lead of the screw. However, if the latter rotates, this relationship cannot be maintained, so it is restrained by a rotation stopper. In such a screw feeding mechanism, expansion and contraction are limited by the length of the threaded portion. Therefore, even assuming a full thread over the entire length of the threaded element, the stretch length is equal to the shorter of the two threaded elements, and the stretch ratio is less than two. Here, the expansion/contraction ratio refers to the value obtained by dividing the maximum length of the screw feeding mechanism by the minimum length, so it could not be applied to a mechanism requiring an expansion/contraction ratio of 2 or more.
本発明の目的は、前記伸縮比を２以上にすることのでき
るねじ送り機構を提供することにある。An object of the present invention is to provide a screw feeding mechanism that can increase the expansion/contraction ratio to 2 or more.
伸縮比２以上のねじ送り機構は、既に述べたように、２
個のねじ要素の結合では実現不可能であり、複数個のね
じ結合を必要とする。このような場合、各ねじの回り止
めの処理が困難である。本発明は、この回り止めを、最
先端のねじ要素にのみほどこし、他のねじを自由に回転
させることによりこの問題を解決している。また、回り
止めを伸縮自在とすることにより、最小長さへの制約を
除いた。、窮１図を用いて本発明の詳細な説明する。As already mentioned, a screw feeding mechanism with an expansion/contraction ratio of 2 or more has an expansion ratio of 2 or more.
This cannot be achieved by connecting only one threaded element, and requires a plurality of threaded connections. In such a case, it is difficult to prevent each screw from rotating. The present invention solves this problem by applying this detent only to the most advanced screw element, allowing the other screws to rotate freely. Furthermore, by making the rotation stopper expandable and retractable, restrictions on the minimum length are removed. The present invention will be explained in detail using FIG.
同図には初段要素１１、中段要素１２ 終段要素１３及
び伸縮回り止め１４より成る３段構成が示されている。The figure shows a three-stage configuration consisting of a first-stage element 11, a middle-stage element 12, a final-stage element 13, and a telescopic detent 14.
各ねじは住いに同一リードのねじにより結合され、終段
要素だけが回転を拘束されている。ここで、リードをｔ
、初段要素に対する中段要素の送り歌をＸｏ、２、中段
要素に灼する終段要素の送り暇をＸ７９１、とすれば、
初段要素から見た終段要素の送り量Ｘい、は次のように
求められる。すなわち、初段の回転数をα、中段をβと
する時、
ＸＩ ＋ ３ ”ｘｌ ＋ ２半ｘ２１ ｓ ＝ａｉ
ｔｌ＋従って、中段要素１２の回転数βがいかな
る値であっても、終段ネジの送り量ｘ５．は一定値αｔ
となる。このような関係は一般の０段構成に当てはまる
。１段目の要素と３段目の要素間の送り量をｘ：」で表
わし、各要素の回転数をθ、ねじのリードをｌ、段数を
ｎ段と仮定すると、前記と同様に、
故に、
ｘ、 、 、−＝ｘ、 ＋７↓ｘ２１、キ゛”本Ｘイー
２．。−、＋ｘｎｔｎ−＋＝θ、 ／＝
（２）
すなわち、中段要素の存在にかかわらず、伸線液は初段
要素の回転数によって決まる。Each screw is connected to the housing by a screw with the same lead, and only the final stage element is restrained from rotating. Here, set the lead to t
, if the sending song of the middle element to the first element is Xo, 2, and the sending time of the final element that burns to the middle element is X791, then
The feed amount X of the final stage element viewed from the first stage element is determined as follows. In other words, when the rotation speed of the first stage is α and the rotation speed of the middle stage is β,
tl+ Therefore, no matter what the rotation speed β of the middle stage element 12 is, the feed amount of the final stage screw x5. is a constant value αt
becomes. Such a relationship applies to a general zero-stage configuration. Assuming that the feed amount between the first stage element and the third stage element is expressed as x:'', the rotation speed of each element is θ, the screw lead is l, and the number of stages is n stages, then as above, , x, , , -=x, +7↓x21, key x 2. -, +xntn-+=θ, /=
(2) That is, regardless of the presence of the middle stage element, the wire drawing liquid is determined by the rotation speed of the first stage element.
以下、本発明の一実施例を第２図、第３図により説明す
る。本実症例は、５段構成のねじ送り伸線機溝である。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. This actual case is a screw feed wire drawing machine groove with a five-stage configuration.
最短状γりの図を第２図に示す。A diagram of the shortest form γ is shown in Fig. 2.
１段目゛妥素２１から５段目要素２５まで順にねじ結合
さねている。５段目要素２５の回転を拘束する回転上め
Ｘｒよ、やはり多段構成となっており、パイプ２７ａ、
ｂ、ｃ、ｄ 及び軸方向にしゆう動するシュー２８ａ、
ｈ、 ｃ、 ｄより成る。第３図には、最長時の様子
を示した。第２図、第３図により明らかなように、伸縮
比が２を超えている。The elements 21 in the first stage to the elements 25 in the fifth stage are screwed together in order. The rotation upper Xr that restricts the rotation of the fifth stage element 25 also has a multi-stage configuration, and the pipe 27a,
b, c, d and a shoe 28a that moves in the axial direction,
Consists of h, c, and d. Figure 3 shows the state at the longest time. As is clear from FIGS. 2 and 3, the expansion/contraction ratio exceeds 2.
第４図は曲の実施し１１と示すもので、ボールネジを用
いて３段構造を実現したものである。１段目要素４１及
び２段目要素４２は、ボールネジ及びボールネジ用ナツ
ト４４により結合され、２段目要素４２と３段目要素４
３も同様に、ボールネジ４６及びナツト４５により結合
されている。、！、た回り止めは４７．４８は２段の伸
縮構造を成している。本実施列によれば、比較的摩擦の
少ないねし伸縮Ｐ＆構が実現できる。FIG. 4 shows the performance of the song 11, in which a three-stage structure is realized using a ball screw. The first stage element 41 and the second stage element 42 are connected by a ball screw and a ball screw nut 44, and the second stage element 42 and the third stage element 4
3 is similarly connected by a ball screw 46 and a nut 45. ,! 47.48 has a two-stage expansion and contraction structure. According to this embodiment, it is possible to realize a spring extension/contraction P& structure with relatively little friction.
本発明によれば、最長時長さを最短時長さで除した値、
すなわち伸縮比が２以上のねじ１ムリ、邊構嘘実現でさ
る。According to the present invention, the value obtained by dividing the longest time length by the shortest time length,
In other words, a screw with an expansion/contraction ratio of 2 or more can be used with just one screw, and the side structure can be made straight.
第１図は原理の説明図、第２１・暑、第３図は本発明の
一実施例の側面図、第４図は同じく他の実施ρりの断面
図である。
１１・・・１段目要素、１２・・・２段目４本、１３・
・・３段目要素、１４・・・１ｇ Ｖ）止め、４５・・
・ボー２レネジナツト、４６・・・ボールネジっ
≠ １図FIG. 1 is an explanatory diagram of the principle, FIG. 21 is a side view of one embodiment of the present invention, and FIG. 4 is a sectional view of another embodiment. 11... 1st row elements, 12... 2nd row 4 elements, 13.
...3rd stage element, 14...1g V) Stop, 45...
・Ball screw nut, 46...Ball screw ≠ 1 diagram
Claims (1)
れている複数の要素及びこれら要素のうち最低１つの回
転を防止する回り市めを備えたねじ送り機構において、
前記ねじ結合のリードを全て同一とし、前記要素のうち
最先端の霞素のみ回り止めをほどこし、前記回り止めを
前記回転軸方向に伸縮自由な構造としたことを特徴とす
るねじ送り機構。1. In a screw feed mechanism equipped with a plurality of elements connected to each other by screw connections having the same rotation axis and a rotation stopper that prevents rotation of at least one of these elements,
A screw feeding mechanism characterized in that all the leads of the screw connection are the same, only the leading edge of the elements is detented, and the detent is structured to be freely expandable and contractable in the direction of the rotation axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11672582A JPS599350A (en) | 1982-07-07 | 1982-07-07 | Thread feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11672582A JPS599350A (en) | 1982-07-07 | 1982-07-07 | Thread feeding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599350A true JPS599350A (en) | 1984-01-18 |
| JPS6122190B2 JPS6122190B2 (en) | 1986-05-30 |
Family
ID=14694252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11672582A Granted JPS599350A (en) | 1982-07-07 | 1982-07-07 | Thread feeding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599350A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0338448U (en) * | 1989-08-28 | 1991-04-15 | ||
| US5012688A (en) * | 1989-02-24 | 1991-05-07 | Ellis Malcolm P | Sizing apparatus and proportional spacing mechanism |
| JPH03134355A (en) * | 1989-10-17 | 1991-06-07 | K & M Enterp Kk | Flexible ball screw unit and elastic strut using this screw unit |
| EP0819415A2 (en) * | 1996-07-15 | 1998-01-21 | Giovanni Binaghi | Pillow lifting Device, particularly for beds and the like |
-
1982
- 1982-07-07 JP JP11672582A patent/JPS599350A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5012688A (en) * | 1989-02-24 | 1991-05-07 | Ellis Malcolm P | Sizing apparatus and proportional spacing mechanism |
| JPH0338448U (en) * | 1989-08-28 | 1991-04-15 | ||
| JPH03134355A (en) * | 1989-10-17 | 1991-06-07 | K & M Enterp Kk | Flexible ball screw unit and elastic strut using this screw unit |
| EP0819415A2 (en) * | 1996-07-15 | 1998-01-21 | Giovanni Binaghi | Pillow lifting Device, particularly for beds and the like |
| EP0819415A3 (en) * | 1996-07-15 | 1998-05-20 | Giovanni Binaghi | Pillow lifting Device, particularly for beds and the like |
| US5937459A (en) * | 1996-07-15 | 1999-08-17 | Binaghi; Giovanni | Pillow lifting device, particularly for beds and the like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6122190B2 (en) | 1986-05-30 |
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