JPS6383446A - Nut holder in screw feed device - Google Patents

Nut holder in screw feed device

Info

Publication number
JPS6383446A
JPS6383446A JP22666386A JP22666386A JPS6383446A JP S6383446 A JPS6383446 A JP S6383446A JP 22666386 A JP22666386 A JP 22666386A JP 22666386 A JP22666386 A JP 22666386A JP S6383446 A JPS6383446 A JP S6383446A
Authority
JP
Japan
Prior art keywords
nut
feed
block
motion
axial direction
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
JP22666386A
Other languages
Japanese (ja)
Inventor
Yuichi Okazaki
祐一 岡崎
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP22666386A priority Critical patent/JPS6383446A/en
Publication of JPS6383446A publication Critical patent/JPS6383446A/en
Pending legal-status Critical Current

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  • Transmission Devices (AREA)

Abstract

PURPOSE:To obtain high linear motion accuracy of a direct acting slide, by transmitting only the motion in an axial direction of motion components of a feed nut to the slide to restrict rotation of the feed nut. CONSTITUTION:When a feed nut is driven in an axial direction by a feed screw, the motion in an axial direction of motion components of the feed nut is transmitted linearly to an direct acting slide. On the other hand, a nut mounting unit 5 crosses a connecting portion 6 of the direct acting slide at right angle in an axial direction and it has flexibility in two directions crossing at a right angle so that the motion of the feed nut in these directions is not transmitted to the direct acting slide by being absorbed by flexible portions 11, 11 and 12, 12. As a result, only the motion in the axial direction of the motion components is transmitted to the direct acting slide, the motion being transmitted in such a manner that it restricts the rotation of the feed nut, whereby high linear motion accuracy of the direct acting slide can be obtained.

Description

【発明の詳細な説明】 [産業上の利用分野] 大発明は、ポールねじ等の送りねじを用いてCμ直動ス
ライド駆動するようなねじ送り装置におけるナツトホル
ダに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nut holder in a screw feed device that uses a feed screw such as a pole screw to drive a Cμ linear motion slide.

[従来の技術] 送りねじを用いて直動スライドを駆動するねじ送り装置
においては、ポールねじの装造誤差やアラインメント誤
差によって、直動スライドの直線運動精度が損なわれ、
これが工作機械や精密ステージ等においてしばしば問題
になる。このような場合、送りナツトの運動成分のうち
、軸方向の駆動のみ゛を直動スライドに伝え、なお旧っ
送りナツトの回転を拘束するような駆動伝達機構が必要
になる。
[Prior Art] In a screw feeding device that uses a feed screw to drive a linear slide, the linear motion accuracy of the linear slide is impaired due to installation errors and alignment errors of the pole screw.
This often becomes a problem in machine tools, precision stages, etc. In such a case, a drive transmission mechanism is required that transmits only the axial drive of the motion component of the feed nut to the linear slide and restrains the rotation of the feed nut.

従来、上述したねじ送り装置における送りナツトの運動
を直動スライドに伝えるナツトホルダは、複数の板ばね
を組合せることにより、送りナツトの回転を拘束しなが
ら軸方向の運動を直動スラ・イドに伝えるように構成さ
れている。
Conventionally, the nut holder in the above-mentioned screw feeding device transmits the motion of the feed nut to the linear slide by combining multiple leaf springs to restrain the rotation of the feed nut while transmitting the axial movement to the linear slide. It is designed to convey.

しかしながら、かかる構成のナツトホルダでは、複数の
板ばねを正確に組立てる必要があって、その作業が煩雑
であるばかりでなく、組立時の調整が面倒で多くの手数
を要するという問題がある。
However, in the nut holder having such a structure, it is necessary to accurately assemble a plurality of leaf springs, which is not only complicated, but also requires a lot of trouble and adjustment during assembly.

[発明が解決しようとする問題点] 本発明の目的は、ねじ送り装置におけるナツトホルダと
して、構造が簡単で小型化でき、しかも複数の板ばねを
用いる場合のように、組立、調整の必要がないホルダ構
造を得ることにある。
[Problems to be Solved by the Invention] An object of the present invention is to provide a nut holder for a screw feeding device that has a simple structure and can be made compact, and does not require assembly or adjustment unlike when using a plurality of leaf springs. The purpose is to obtain a holder structure.

[問題点を解決するための手段] 上記目的を達成するため、本発明においては。[Means for solving problems] In order to achieve the above object, in the present invention.

ねじ送り装置における送りナツトの動きを直動スライド
に伝えるナツトホルダを、送りナツトが取付けられる中
心ブロー・りと、その周囲の中間ブロックと、その中間
ブロックの周囲に位置して直動スライドに連結される周
囲ブロックとを有し、1つ送りねじの軸線方向に剛性を
有する金属ブロックにより形成し、上記金属ブロックに
おける中心ブロックと中間ブロックとの間、及び中間ブ
ロフクとIM囲ジブロックの間を、相尾に直交する方向
に伸びた可撓性のあるリンク部により連結し、上記各す
ンク部を、金属ブロックに切設した互いに対向する一対
の二字型スリット、及びそれらのスリットとは90@だ
け向きを変えて切設した一対の口字型スリットにより形
成している。
A nut holder that transmits the movement of the feed nut to the linear slide in a screw feeding device is made up of a central blow rod to which the feed nut is attached, an intermediate block around it, and a nut holder located around the intermediate block that is connected to the linear slide. A surrounding block is formed by a metal block having rigidity in the axial direction of the feed screw, and between the center block and the intermediate block in the metal block, and between the intermediate block and the IM surrounding block, A pair of double-shaped slits that are connected to each other by a flexible link extending in a direction perpendicular to the tail and each of the above-mentioned slits are cut into a metal block, and these slits are 90 It is formed by a pair of mouth-shaped slits cut in different directions by the @ mark.

[作 用] 送りねじにより送りナツトが軸線方向に駆動されると、
゛その送りナツトの動きがナツトホルダを介して直動ス
ライドに伝えられるが、その際。
[Operation] When the feed nut is driven in the axial direction by the feed screw,
゛The movement of the feed nut is transmitted to the linear slide via the nut holder.

ナツトホルダの軸線方向の剛性により、送りナツトの連
動成分のうち、軸線方向の連動は直動スライドに直接的
に伝えられる。また、ナツト取付部は回転方向の可撓性
を持たないため、ナツト取付部の回転は拘束される。
Due to the axial rigidity of the nut holder, the axial movement of the feed nut movement component is directly transmitted to the linear slide. Further, since the nut mounting portion does not have flexibility in the rotational direction, rotation of the nut mounting portion is restricted.

一方、ナツト取付部は、直動スライドとの連結部に対し
送りねじの軸線方向に直交し且つ互いに直交する2方向
に可撓性を持つため、これらの方向の送りナツトの動き
は直動スライドには伝わらない。
On the other hand, since the nut mounting part is flexible in two directions perpendicular to the axial direction of the feed screw and mutually orthogonal to the connection part with the linear slide, the movement of the feed nut in these directions is caused by the movement of the linear slide. It doesn't get across.

従って、送りナツトの連動成分のうち、軸線方向の運動
のみが直動スライドに伝えられ、且つ送りナツトの回転
は拘束され、それにより直動スライドの高い直線運動精
度を得ることができる。
Therefore, of the interlocking components of the feed nut, only the motion in the axial direction is transmitted to the linear slide, and the rotation of the feed nut is restrained, thereby achieving high linear motion accuracy of the linear slide.

[実施例] 以下に未゛発明の実施例を図面を参照しながら詳述する
[Embodiments] Below, embodiments of the invention will be described in detail with reference to the drawings.

第1図及び第2図に示すねじ送り装置において、送りね
じ1は、図示しない駆動機構による回転駆動により、そ
れに螺合した送りナツト2を軸線方向に移動させるもの
で、その送りナツト2は、以下に説明するナツトホルダ
3を介して、図示しない直動スライドに連結される。
In the screw feeding device shown in FIGS. 1 and 2, the feed screw 1 moves a feed nut 2 screwed thereon in the axial direction by being rotationally driven by a drive mechanism (not shown). It is connected to a linear slide (not shown) via a nut holder 3, which will be described below.

上記ナツトホルダ3は、送りナツト2の動きを直動スラ
イドに伝えるに際し、送り方向と回転方向には高い剛性
によってそれ自体が変形せず、他の2方向には自由度を
持つもので、中心部にナツト取付部5を設けると共に、
周辺部に直動スライドとの連結部Bを設けた金属ブロッ
ク4により構成している。
When the nut holder 3 transmits the movement of the feed nut 2 to the linear slide, it does not deform due to its high rigidity in the feed direction and rotation direction, and has a degree of freedom in the other two directions. In addition to providing a nut mounting portion 5 on the
It is composed of a metal block 4 having a connecting part B with a linear slide at its peripheral part.

一上記金属ブロック4は、ナツト取付部5を設けた中心
プロ・ツク4aと、その周囲に位置する中fullブロ
ック4bと、その中間ブロック4bの周囲に位置して直
動スライドの連結部6が設けられている周囲ブロック4
Cとを備え、中心ブロック4aと中間ブロック4bとの
間、及び中間ブロック4bと周囲ブロック4Cとの間は
、相互に直交する方向に伸びたリンク部7,7及び8,
8により連結している。これらのリンク部?、7及び8
,8は、各々の両端部を切欠9,8及び10.10によ
り薄肉化して可撓部11.II及び12.12としたも
のである。
The metal block 4 includes a central block 4a provided with a nut mounting portion 5, an intermediate full block 4b located around it, and a connecting portion 6 of a linear slide located around the intermediate block 4b. Surrounding block 4 provided
C, and between the center block 4a and the intermediate block 4b, and between the intermediate block 4b and the peripheral block 4C, there are link parts 7, 7 and 8 extending in mutually orthogonal directions.
It is connected by 8. These links? , 7 and 8
, 8 are thinned at both ends by cutouts 9, 8 and 10.10 to form flexible portions 11. II and 12.12.

従って、それらの可撓部11.11及び12.12によ
り、ナツト取付部5が直動スライドとの連結部6に対し
て、軸線方向に直交し往つ〃いに直交する2方向に可撓
性を持ち、これらの方向の送り子・ノI・2の動きが上
記OTtえ部11.11及び12.12におけるIiT
 )a性によって吸収されて、直動スライドに伝わらな
い。
Therefore, these flexible parts 11.11 and 12.12 allow the nut mounting part 5 to be flexible in two directions perpendicular to the axial direction and back and forth with respect to the connecting part 6 with the linear slide. The movement of the sender I and 2 in these directions causes IiT in the above OT sections 11.11 and 12.
) It is absorbed by the a property and is not transmitted to the linear slide.

また、上記可撓部11.11及び12.12はす・、ト
取付部5に対して回転方向の可撓性を与えるものではな
く、従ってナツト取付部5の回転は拘束される。
Furthermore, the flexible portions 11.11 and 12.12 do not provide flexibility in the rotational direction to the nut attachment portion 5, and therefore rotation of the nut attachment portion 5 is restricted.

上記金属ブロック4における各リンク部7.7及び可撓
部It、11は、金属ブロック4に対し、ワイヤ放電加
丁機等を用いて、々二いに対向する一対のコ字型スリッ
ト13.13を切設すると共に、それらのスリ、 l−
13,13の各端部に切欠9,9−・を設けることによ
り形成したものである。さらに、各リンク部8,8及び
可撓部12,12は、金属ブロック4に対1.て上記と
同様な子役により、!ノーいに対向する一対のコ字型ス
リット14.14を、上記のスリ7h 13,13とは
90″だけ向きを変えて切設すると共に、それらのスリ
7) 14.14の各端部に切欠10.10 ・φを設
けることにより形成したものである。
Each link part 7.7 and flexible part It, 11 in the metal block 4 are cut into a pair of U-shaped slits 13. 13, and those pickpockets, l-
It is formed by providing notches 9, 9-. at each end of 13, 13. Further, each link portion 8, 8 and flexible portion 12, 12 is connected to the metal block 4 by one. By a child actor similar to the above! A pair of U-shaped slits 14.14 facing each other are cut in a direction 90'' different from the above-mentioned slits 7h 13, 13, and at each end of those slits 7) 14.14. Notch 10.10 ・It is formed by providing φ.

また、に記金属ブロック4は、第2図かられかるように
、送り+シト2の動きを直動スライドに伝えるに際し、
送りねじ1の軸線方向には変形しない程度の厚さを備え
たものである。
In addition, as shown in FIG. 2, the metal block 4 shown in FIG.
The thickness is such that the feed screw 1 does not deform in the axial direction.

上記構成を有するねじ送り装置においては、送りねじ1
゛により送りす71・2が軸線方向に駆動されると、そ
の送りナツト2の動きがナツトホルダ3を介して直動ス
ライドに伝えられるが、その際、ナツトホルダが軸線方
向に大きな剛性を有しているため、送りナツト2の運動
成分のうち、軸線方向の運動は直動スライドに直接的に
伝えられる。
In the screw feed device having the above configuration, the feed screw 1
When the feed pin 71.2 is driven in the axial direction by ``, the movement of the feed nut 2 is transmitted to the linear slide via the nut holder 3, but at this time, the nut holder has large rigidity in the axial direction. Therefore, among the motion components of the feed nut 2, the motion in the axial direction is directly transmitted to the linear slide.

また、各リンク8′l(7,7及び8,8の両端の可1
兆部1i、11及び12.12は、ナツト取付部5に対
して回転方向の可撓性を1・えるものではないため、ナ
ツト取付部5の回転は拘束される。
In addition, each link 8'l (possible 1 at both ends of 7, 7 and 8, 8)
Since the portions 1i, 11, and 12.12 do not increase the flexibility of the nut mounting portion 5 by 1/2 in the rotational direction, the rotation of the nut mounting portion 5 is restricted.

一方、ナツト取付部5は、上記11T t^部It、+
1及び12.12により、直動スライドとの小結部6に
対し送りねじの軸線方向に直交し且つ〃いに直交する2
方向に+1[挑性を持ち、これらの方向の送りナンド2
の動きが上記町1建部11.11及び12.12におけ
る可撓性によって吸収され、直動スライドには伝わらな
い。
On the other hand, the nut mounting part 5 is the above-mentioned 11T t^ part It, +
1 and 12.12, 2 is perpendicular to the axial direction of the feed screw and perpendicular to the small connection part 6 with the linear slide.
+1 in directions [defiant, send nand 2 in these directions
The movement is absorbed by the flexibility of the above-mentioned town 1 building parts 11.11 and 12.12 and is not transmitted to the linear slide.

従って、送りナンド2の連動成分のうら、軸線方向の1
!!!初のみが直動スライドに伝えられ、且つ送りナツ
ト2の回転を拘束するような運動伝達が行われ、直動ス
ライドの高い直線連動精度を得ることができる。
Therefore, behind the interlocking component of the feed nand 2, 1 in the axial direction
! ! ! Only the first movement is transmitted to the linear slide, and the motion is transmitted such that the rotation of the feed nut 2 is restrained, so that high linear interlocking precision of the linear slide can be obtained.

[発明の効果〕 以上に詳述したように、本発明によれば、ねじ送り装置
ηのナツトホルダとして、構造がMlでボッ化でき、し
かも複数の板ばねを用いる場合のように5M1立、調整
の必要がないホルダ構造を得ることができる。
[Effects of the Invention] As detailed above, according to the present invention, the structure can be made of Ml as a nut holder for the screw feeding device η, and the structure can be made of Ml, and it can be adjusted in 5M1 position as in the case of using a plurality of leaf springs. It is possible to obtain a holder structure that does not require .

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

第1図は本発明に係るねじ送り装置におけるす、トホル
ダの正面図、第2図は同側断面図である。 l ・・送りねじ、    2 口送りナツト、3・嗜
ナツトホルダ、 4−皆金属ブロック、4d−Φ中心ブ
ロック、 4b・・中間ブロック。 4c・・周囲ブロック、7.8−−リンク部、13、+
4 ・・コ字型スリー、1・。 第1図 R 第2図
FIG. 1 is a front view of a screw feeder according to the present invention, and FIG. 2 is a sectional view of the same side. l...Feed screw, 2-feed nut, 3-nut holder, 4-all metal block, 4d-Φ center block, 4b...intermediate block. 4c... Surrounding block, 7.8--Link part, 13, +
4... U-shaped three, 1. Figure 1R Figure 2

Claims (1)

【特許請求の範囲】[Claims] 1、送りねじの回転駆動によりそれに螺合した送りナッ
トを介して直動スライドを軸線方向に移動させるねじ送
り装置において、上記送りナットの動きを直動スライド
に伝えるナットホルダを、送りナットが取付けられる中
心ブロックと、その周囲の中間ブロックと、その中間ブ
ロックの周囲に位置して直動スライドに連結される周囲
ブロックとを有し、且つ送りねじの軸線方向に剛性を有
する金属ブロックにより形成し、上記金属ブロックにお
ける中心ブロックと中間ブロックとの間、及び中間ブロ
ックと周囲ブロックとの間を、相互に直交する方向に伸
びた可撓性のあるリンク部により連結し、上記各リンク
部を、金属ブロックに切設した互いに対向する一対のコ
字型スリット、及びそれらのスリットとは90°だけ向
きを変えて切設した一対のコ字型スリットにより形成し
たことを特徴とするねじ送り装置におけるナットホルダ
1. In a screw feeding device that moves a linear slide in the axial direction via a feed nut screwed onto the feed screw by rotational drive of the feed screw, the feed nut attaches a nut holder that transmits the movement of the feed nut to the linear slide. It has a central block, an intermediate block surrounding it, and a peripheral block located around the intermediate block and connected to the linear slide, and is formed of a metal block having rigidity in the axial direction of the feed screw. , the center block and the intermediate block in the metal block and the intermediate block and the peripheral block are connected by flexible link portions extending in mutually orthogonal directions, and each of the link portions is connected to A screw feeding device characterized in that it is formed by a pair of U-shaped slits facing each other cut in a metal block, and a pair of U-shaped slits cut in a direction opposite to each other by 90 degrees. nut holder.
JP22666386A 1986-09-25 1986-09-25 Nut holder in screw feed device Pending JPS6383446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22666386A JPS6383446A (en) 1986-09-25 1986-09-25 Nut holder in screw feed device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22666386A JPS6383446A (en) 1986-09-25 1986-09-25 Nut holder in screw feed device

Publications (1)

Publication Number Publication Date
JPS6383446A true JPS6383446A (en) 1988-04-14

Family

ID=16848706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22666386A Pending JPS6383446A (en) 1986-09-25 1986-09-25 Nut holder in screw feed device

Country Status (1)

Country Link
JP (1) JPS6383446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680529U (en) * 1993-04-23 1994-11-15 日本トムソン株式会社 Driving device and XY driving device including the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113101A (en) * 1984-06-29 1986-01-21 Tokyo Optical Co Ltd Feeding mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113101A (en) * 1984-06-29 1986-01-21 Tokyo Optical Co Ltd Feeding mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680529U (en) * 1993-04-23 1994-11-15 日本トムソン株式会社 Driving device and XY driving device including the same

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