JPS5939624B2 - Feed screw mechanism - Google Patents
Feed screw mechanismInfo
- Publication number
- JPS5939624B2 JPS5939624B2 JP990277A JP990277A JPS5939624B2 JP S5939624 B2 JPS5939624 B2 JP S5939624B2 JP 990277 A JP990277 A JP 990277A JP 990277 A JP990277 A JP 990277A JP S5939624 B2 JPS5939624 B2 JP S5939624B2
- Authority
- JP
- Japan
- Prior art keywords
- screw shaft
- roller
- carriage
- screw mechanism
- feed screw
- 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
Links
Description
【発明の詳細な説明】
この発明はネジ軸を螺動させることによって、それにが
ん合されたテーブルを移動させる送りネジ機構に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feed screw mechanism that moves a table coupled thereto by screwing a screw shaft.
従来のこの種の送りネジ機構の例を第１図に示す。An example of a conventional feed screw mechanism of this type is shown in FIG.
ネジ軸１の螺動によりメネジを有する往復台２を介して
テーブル３は前記ネジ軸１上を往復運動するのであるが
、ネジ軸１の回転に伴い、ネジ軸１と往復台２との間の
螺動面に滑り摩擦抵抗が生じるため、テーブル３を移動
させるにはネジ軸１に過大なトルクが必要となる。Due to the screw movement of the screw shaft 1, the table 3 reciprocates on the screw shaft 1 via the carriage 2 having a female thread. Since sliding friction resistance occurs on the threaded surface of the screw shaft 1, an excessive torque is required on the screw shaft 1 to move the table 3.
この発明は以上の欠点を解決したことを特徴とするもの
で、その一例を以下に述べる。This invention is characterized by solving the above-mentioned drawbacks, and an example thereof will be described below.
第２図は矩形ネジを有するネジ軸１の螺動により往復台
２に取り付けられたテーブル３が移動する原理図である
。FIG. 2 is a diagram showing the principle of movement of the table 3 attached to the carriage 2 by the screw movement of the screw shaft 1 having a rectangular screw.
往復台２にはａ点に軸受４に支持されたコロ５を設置し
、ｂ点には軸受６に支持されたコロ１を有し且つ外周に
ネジ部を有するホルダ８を設置する。On the reciprocating table 2, a roller 5 supported by a bearing 4 is installed at a point a, and a holder 8 having a roller 1 supported by a bearing 6 and a threaded portion on the outer periphery is installed at a point b.
前記ネジ軸１をＡ方向に回転するとネジ軸１は往復台２
のａ点でコロ５に接するため、コロ５の回転により滑り
摩擦が減少し、テーブル３を低トルクでＲ方向に移動で
きる。When the screw shaft 1 is rotated in the direction A, the screw shaft 1 is moved to the carriage 2.
Since it contacts the roller 5 at point a, the rotation of the roller 5 reduces sliding friction, allowing the table 3 to be moved in the R direction with low torque.
次に、前記ネジ軸１をＢ方向に回転すると、ネジ軸は往
復台２のｂ点でコロ７に接するため、コロ７の回転によ
り滑り摩擦が減少し、テーブル３を低トルクでビ方向に
移動できる。Next, when the screw shaft 1 is rotated in the B direction, the screw shaft contacts the rollers 7 at point b of the carriage 2, so the rotation of the rollers 7 reduces the sliding friction, and the table 3 is moved in the B direction with low torque. Can be moved.
又ホルダ８のセンタとコロ１のセンタが偏心しているた
め、ホルダ８を回転することによりａ−ｂ間の距離が変
動し、バックラッシュを調整することができる。Further, since the center of the holder 8 and the center of the roller 1 are eccentric, the distance between a and b can be varied by rotating the holder 8, and backlash can be adjusted.
以上、説明したとおり、ネジ軸と保合部の摩擦を低減す
ると同時に、軸方向のバックラッシュの調整が可能であ
る。As described above, it is possible to reduce the friction between the screw shaft and the retaining portion and at the same time adjust the backlash in the axial direction.
【図面の簡単な説明】
第１図Ａは従来の送りネジ機構の一例の外観図、第１図
Ｂはその動作図、第２図Ａは本発明の動作図、第２図Ｂ
はその側面図、第２図Ｃはホルダ８とコロ７との関係を
示す詳細図である。
第１図において、１・・・・・・ネジ軸、２・・・・・
・往復台、３・・・・・・テーブル、第２図において、
１・・・・・・ネジ軸、２・・・・・・往復台、３・・
・・・・テーブル、４・・・・・・軸受、５・・・・・
・コロ、６・・・・・・軸受、７・・・・・・コロ、８
・・・・・・ホルダ。[Brief Description of the Drawings] Fig. 1A is an external view of an example of a conventional feed screw mechanism, Fig. 1B is an operation diagram thereof, Fig. 2A is an operation diagram of the present invention, and Fig. 2B
is a side view thereof, and FIG. 2C is a detailed view showing the relationship between the holder 8 and the rollers 7. In Fig. 1, 1...screw shaft, 2...
・Transportation carriage, 3...table, in Fig. 2,
1...screw shaft, 2...reciprocating table, 3...
...Table, 4...Bearing, 5...
・Roller, 6... Bearing, 7... Roller, 8
······holder.
Claims (1)
配置された往復台と、前記軸部の矩形ネジ部の谷に隙間
をもってかん合するコロと、前記コロを保持する軸受と
、前記軸受を偏心した位置で保持するホルダーとを具備
し、前記ホルダーを回転可能に前記往復台に位置を変え
て複数設け、前記軸部を回転することにより前記往復台
を移動するようにした送りネジ機構。1. A shaft portion having a rectangular threaded portion, a carriage disposed to surround the shaft portion, a roller that engages with a gap in a valley of the rectangular threaded portion of the shaft portion, and a bearing that holds the roller; a holder for holding the bearing at an eccentric position, a plurality of the holders are rotatably provided at different positions on the carriage, and the carriage is moved by rotating the shaft portion. screw mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990277A JPS5939624B2 (en) | 1977-01-31 | 1977-01-31 | Feed screw mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990277A JPS5939624B2 (en) | 1977-01-31 | 1977-01-31 | Feed screw mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5395471A JPS5395471A (en) | 1978-08-21 |
| JPS5939624B2 true JPS5939624B2 (en) | 1984-09-25 |
Family
ID=11733035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP990277A Expired JPS5939624B2 (en) | 1977-01-31 | 1977-01-31 | Feed screw mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5939624B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6291050U (en) * | 1985-11-27 | 1987-06-10 | ||
| DE3776230D1 (en) * | 1986-08-28 | 1992-03-05 | Ciba Geigy Ag | SILICATE-TREATED HONEYCOMB STRUCTURE. |
| JP2582114Y2 (en) * | 1990-12-12 | 1998-09-30 | 東京電子工業株式会社 | Feed screw mechanism |
| JP2006257805A (en) * | 2005-03-18 | 2006-09-28 | Toshiba Elevator Co Ltd | Opening/closing mechanism of door |
-
1977
- 1977-01-31 JP JP990277A patent/JPS5939624B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5395471A (en) | 1978-08-21 |
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