JPS62241633A - Linear feed mechanism - Google Patents
Linear feed mechanismInfo
- Publication number
- JPS62241633A JPS62241633A JP61083463A JP8346386A JPS62241633A JP S62241633 A JPS62241633 A JP S62241633A JP 61083463 A JP61083463 A JP 61083463A JP 8346386 A JP8346386 A JP 8346386A JP S62241633 A JPS62241633 A JP S62241633A
- Authority
- JP
- Japan
- Prior art keywords
- feed
- feed screw
- guide track
- screw
- linear
- 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
Links
- 238000005452 bending Methods 0.000 claims description 15
- 230000002265 prevention Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012840 feeding operation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
- B23Q5/408—Nut bearings therefor
-
- 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
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は各種の工作機械、精密測定装置等に用いる直線
送シ機構に関するものであるっ（従来の技術及び発明の
目的）
各種の工作機械や精密測定装置等に於ける直線送シ機構
には、直線案内軌道に沿って移動自在に装置したテーブ
ル等の被送シ部材を、該＠線案内軌道に平行に装置した
送シねじの回転により、該送りねじに螺合した雌ねじ部
材を介して直線的に送る機構が広く用いられている。し
かしながら、前記直線案内軌道と送りねじの平行誤差を
零とする事は部品の加工精度や組立精度の関係上不可能
であり、また送シねじを完全に直線状とすることも非常
に難かしいので、送９ねじに螺合した雌ねじ部材を単に
被送り部材に固定した従来の直線送シ機構では、送シ作
動中に部分的に負荷かに動じ、この影響を受けて送り精
度が不均一になってしまうという欠点がある。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a linear feed mechanism used in various machine tools, precision measuring devices, etc. (Prior Art and Object of the Invention) Various machine tools. A linear feed mechanism in a precision measuring device or the like uses a rotation of a feed screw installed parallel to the linear guide track to move a member such as a table that is movable along a linear guide track. Therefore, a mechanism is widely used in which the feed screw is fed linearly via a female screw member screwed into the feed screw. However, it is impossible to reduce the parallelism error between the linear guide track and the feed screw to zero due to the processing accuracy and assembly accuracy of the parts, and it is also extremely difficult to make the feed screw completely linear. Therefore, in the conventional linear feed mechanism in which the female threaded member screwed into the feed screw 9 is simply fixed to the workpiece, the load may partially change during the feed operation, and due to this influence, the feed accuracy may be uneven. The disadvantage is that it becomes
本発明の目的は直線送シ機構に於いて、直線案内軌道と
送シねじとの間に平行誤差があっても、負荷変動等の作
動不良が生じないようにし、以って送シ精度を上けるこ
とを目的とするものである。The purpose of the present invention is to prevent malfunctions such as load fluctuations from occurring even if there is a parallelism error between the linear guide track and the feed screw in a linear feed mechanism, thereby improving the feed accuracy. The purpose is to raise the level.
（発明の構成）
かかる目的を達成する定めに、本発明は１区線案内軌道
に治って移動自在に装置した被送り部材ｔ１該直線案同
軌道に平行に装置した送りねじの回転によシ、該送シね
じに螺合した雌ねじ部材を介して直線的に送る機構に於
いて、前記雌ねじ部材と被送り部材とて、送り方向の軸
線の回ｐに回動自在に構成した油量すンク金介して連結
したことを要旨とするものである。以下実施例に基づい
て詳細に説明すると次の通υである。(Structure of the Invention) In order to achieve the above object, the present invention provides a feed member t1 which is movably mounted on a first section line guide track and which is moved by the rotation of a feed screw arranged parallel to the linear guide track. In the mechanism for linearly feeding oil via a female threaded member screwed onto the feeding screw, the female threaded member and the fed member are configured to be rotatable in a rotation direction p of an axis in the feeding direction. The gist of this is that they are connected through a link. The following general explanation will be given below in detail based on examples.
第１図、第２図に於いて、符号１は被送９部材としての
テーブルで、２はベッド３に固定された直線案内軌道で
ある。前記テーブル１は適宜の軸受４等によって前記直
線案内軌道２に沿って移動自在に装置する。軸受４に、
テーブル１ｆｅ前記直線案内軌道２に沿って移動自在と
する構成であれば、すベシ軸受、ころがυ軸受等適宜で
ある。例えば第５図の実施例は、断面略コ字状に構成し
た軸受４本体に、ボール等の多数の転動体１９を循環移
動自在に構成し、移動方向に適宜距離突出支持した複数
の転動体１９を前記直線案内軌道２に当接支持する、い
わゆる直線運動軸受を適用したものである。また第６図
の実施例は、ボール等の多数の転動体１９を循環移動自
在に構成した軸受４本体の外側に前記直線案内軌道２を
構成し、やはり第５図の実施例と同様に、移動方向適宜
距離突出支持した複数の転動体１９を、外側の直線案内
軌道２の突条２０に当接支持するもので、前記直線運動
軸受を簡略化した軸受を適用したものである。符号５は
前記直線案内軌道２に平行に装置した送りねじで、６は
該送υねじ５に螺合した雌ねじ部材である。かかる送９
ねじ６、雌ねじ部材Ｔの構成は通常のねじ、ボールねじ
等適宜である。In FIGS. 1 and 2, reference numeral 1 is a table serving as a member to be transported 9, and reference numeral 2 is a linear guide track fixed to the bed 3. The table 1 is movable along the linear guide track 2 by suitable bearings 4 and the like. To the bearing 4,
As long as the table 1fe is configured to be movable along the linear guide track 2, it is possible to use a straight bearing, a υ bearing for the rollers, or the like as appropriate. For example, in the embodiment shown in FIG. 5, a large number of rolling elements 19 such as balls are configured in a bearing 4 main body having a substantially U-shaped cross section so as to be movable in circulation, and the plurality of rolling elements are supported to protrude an appropriate distance in the direction of movement. 19 is supported in contact with the linear guide track 2, a so-called linear motion bearing is applied. Further, in the embodiment shown in FIG. 6, the linear guide track 2 is constructed on the outside of the main body of the bearing 4 in which a large number of rolling elements 19 such as balls are configured to be able to circulate freely, and similarly to the embodiment shown in FIG. A plurality of rolling elements 19, which are supported by projecting a suitable distance in the direction of movement, are supported in contact with the protrusions 20 of the outer linear guide track 2, and a bearing that is a simplified version of the linear motion bearing described above is applied. Reference numeral 5 is a feed screw installed parallel to the linear guide track 2, and 6 is a female screw member screwed onto the feed screw 5. Such delivery9
The screw 6 and the female screw member T may be of any suitable type, such as a normal screw or a ball screw.
咀ねじ部材６は雌ねじ自体γと適宜のハウジング８で構
成している。しかして該雌ねじ部材６とテーブル１とを
、その送り方向、即ち送シねじ５の軸線と平行な方向の
軸線の回りに回動自在に構成した屈曲リンク９を介して
連結する。１０はテーブル１に設けた支持金具である。The male screw member 6 consists of an internal screw thread itself γ and a suitable housing 8. The female screw member 6 and the table 1 are connected via a bending link 9 that is rotatable about an axis parallel to the feed direction, that is, the axis of the feed screw 5. Reference numeral 10 denotes a support fitting provided on the table 1.
屈曲リンク９はテーブル１側の第１のリンク１１と、雌
ねじ部材６側の第２のリンク１２とから構成ぢれ、夫々
の端部に於いてビン１３，１４．１５の回りに回動自在
にＬｔｉ！り付けられている。第１図に示す％施例は、
屈曲リンク９を、平行リンク機構１１ｍ＋１ｉＺするよ
うにしたもので、このように構成することによシ、前述
したように送ｐ作動に於いて雌ねじ部材６がテーブル１
に対して相対的に上下左右方向に移動した場合にも、該
蛾ねじ部材６自体の、送りねじ５回シの回転を防ぐこと
ができ、以って送シ精度を均一に行なうことができる。The bending link 9 is composed of a first link 11 on the table 1 side and a second link 12 on the female thread member 6 side, and is rotatable around the pins 13, 14, and 15 at each end. To Lti! is attached. The % examples shown in Figure 1 are:
The bending link 9 is configured as a parallel link mechanism 11m+1iZ, and with this configuration, the female screw member 6 is connected to the table 1 during the feeding operation as described above.
Even when the moth screw member 6 moves vertically and horizontally relative to the feed screw, it is possible to prevent the feed screw member 6 itself from rotating five times, thereby making it possible to maintain uniform feed accuracy. .
平行リンク機構はどのように構成しても良いが、ｍｌチ
ーに於いでは、前記第１、第２のリンク１１．１２’に
中間部材１８を介して２連、即ち第１、第２のリンク１
１ 、１１’ ； １２ 、１２’によって構成するこ
とができる。The parallel link mechanism may be configured in any way, but in the ML Q, two links, that is, first and second links, are connected to the first and second links 11 and 12' via the intermediate member Link 1
1, 11'; 12, 12'.
（作用）
以上の構成に於いて適宜の駆動装置（図示せず）によっ
て送りねじ５を回転すると、雌ねじ部材６が該送シねじ
５に沿って移動し、屈曲リンク９を介してテーブル１ｔ
−駆動するので、テーブル１は直線案内軌道２に沿って
直線止金移動し、適宜の送りを行なえる。尚、屈曲り／
り９は送シ方回の遊びができるだけ小さくなるように構
成する。かかる送シ作動に於いて、雌ねじ部材６は送り
ねじ５に沿って移動するのであるから、例えば直線案内
軌道２と送υねじ５の平行が僅かにずれている場合や、
送りねじ５が僅かに湾曲している場合には、雌ねじ部材
６は、テーブル１との相対関係に於いて、該テーブル１
の送り方向と直角な平面内を上下左右方向に移動する。(Function) In the above configuration, when the feed screw 5 is rotated by an appropriate drive device (not shown), the female screw member 6 moves along the feed screw 5, and the table 1t is moved through the bending link 9.
- Since the table 1 is driven, the table 1 can move linearly along the linear guide track 2 and perform appropriate feeding. In addition, bending/
The steering wheel 9 is constructed so that the play in the feed direction is as small as possible. In such a feed operation, the female screw member 6 moves along the feed screw 5, so if, for example, the linear guide track 2 and the feed screw 5 are slightly out of parallel,
When the feed screw 5 is slightly curved, the female threaded member 6 is in a relative relationship with the table 1.
Move up, down, left and right in a plane perpendicular to the feed direction.
しかしながら本発明は送シねじ５と雌ねじ部材６とを、
屈曲リンク９を介して連結しているので、これらの位置
の相対的変化は、この屈曲リンク９の屈曲、即ち第１、
第２のリンクｔ１．１２の偽かな回動によって吸収する
ことができ、従って負荷が変動せず、送υ精度が不均一
となることを効果的に防止することができる。尚、屈曲
リンク９は図示例に於いては、第１１第２のリンク１１
，１２をビン１３ 、１４゜１５の両側に構成しておシ
、即ち屈曲リンク９を、雌ねじ部材６の前後に設けてい
るが、前記送シ方向に遊びなく駆動力全良好に伝達し得
る限９に於いては、片側でも良い。However, in the present invention, the feed screw 5 and the female thread member 6 are
Since they are connected via the bending link 9, the relative change in these positions is due to the bending of this bending link 9, that is, the first,
This can be absorbed by the false rotation of the second link t1.12, so that the load does not fluctuate and it is possible to effectively prevent uneven feeding accuracy. In the illustrated example, the bending link 9 is the eleventh second link 11.
, 12 are constructed on both sides of the bins 13, 14 and 15, and the bending links 9 are provided at the front and rear of the female screw member 6, and the driving force can be fully transmitted in the feeding direction without any play. In limit 9, it may be on one side.
（実施例）
第３図の実施例は、屈曲リンク９ｔ−雌ねじ部材６０前
後に設け、そのいずれか一方何に於ける雌ねじ部材６１
Ａｌｌ端部を、球面軸受１６ｔ−介して雌ねじ部材６に
連結した構成である。送シねじ５は熱処理等の影譬で、
その湾曲が大きい場合も６Ｌこの場合には雌ねじ部材６
は送シ作動に際して螺旋運動をすることになり、その繭
後面の振幅が異なってしまう場合を生じる可能性がある
。前述した第３図の実施例は、このような場合が生じて
も球面軸受１６によシ吸収し、以って負荷の変動を防止
することができる。尚、第３図に於いて符号１７はラジ
アル軸受である。(Embodiment) In the embodiment shown in FIG.
The All end portion is connected to the female threaded member 6 via a spherical bearing 16t. The feed screw 5 is due to heat treatment etc.
6L also when the curvature is large, in this case the female thread member 6
The cocoon undergoes a spiral motion during the feeding operation, and the amplitude of the rear surface of the cocoon may differ. In the embodiment shown in FIG. 3, even if such a situation occurs, it can be absorbed by the spherical bearing 16, thereby preventing load fluctuations. In addition, in FIG. 3, the reference numeral 17 is a radial bearing.
（発明の効果）
本発明は以上の通り、直線案内軌道に沿って移動自在に
装置した被送り部材を１咳直線案内軌道に平行に装置し
た送シねじの回転により、該送シねじに螺合した雌ねじ
部材を介して直線的に送る機構に於いて、前記雌ねじ部
材と被送り部材とを、送り方向の軸線の回りに回動自在
に構成した屈曲リンクを介して連結したので、例えば直
線案内軌道２と送９ねじ５の平行が僅かにずれている場
合や、送ジねじ５が備かに湾曲している場合に於いても
、送り作動中に負荷が部分的に変化することを防ぐこと
ができ、以って送シ精度を送り範囲に於いて均一に保持
し得るという格別なる効果がある。ζうして本発明は高
精度の直線送シ機構を安価に構成し得るという効果があ
る。(Effects of the Invention) As described above, the present invention allows a member to be fed, which is movable along a linear guide track, to be screwed into the feed screw by rotating the feed screw, which is arranged parallel to the linear guide track. In a mechanism for linearly feeding via female threaded members that are fitted together, the female threaded member and the fed member are connected via a bending link configured to be rotatable around an axis in the feeding direction, so that, for example, linear Even if the parallelism between the guide track 2 and the feed screw 5 is slightly off, or if the feed screw 5 is slightly curved, the load will partially change during the feed operation. There is a special effect that the feeding accuracy can be maintained uniformly in the feeding range. ζTherefore, the present invention has the effect that a highly accurate linear feed mechanism can be constructed at low cost.
第１図、第２図は本発明の一実施例を示す、夫夫横断面
説明図、部分側面説明図で、第３図は他実施例の要部断
面説明図である。
符号１・・・テーブル（被送シ部材）、２・・・直線案
内軌道、３・・・ベッド、４・・・軸受、５・・・送シ
ねじ、６・・・雌ねじ部材、７・・・雌ねじ自体、８・
・・ハウジング、９・・・屈曲リンク、１０・・・支持
金具、１１．１１’・・・第１のリンク、１２．１２’
・・・第２のリンク、１３．１４．１５・・・ピン、１
６・・・球面軸受、１７・・・ラジアル軸受、１８・・
・中間部材、１９・・・転動体、２０・・・突条。1 and 2 are an explanatory cross-sectional view and a partial side view showing one embodiment of the present invention, and FIG. 3 is an explanatory cross-sectional view of a main part of another embodiment. Reference numerals 1...Table (transferred member), 2...Linear guide track, 3...Bed, 4...Bearing, 5...Feed screw, 6...Female screw member, 7...・Female thread itself, 8・
...Housing, 9...Bending link, 10...Supporting metal fitting, 11.11'...First link, 12.12'
...Second link, 13.14.15...Pin, 1
6... Spherical bearing, 17... Radial bearing, 18...
- Intermediate member, 19... Rolling element, 20... Projection.
Claims (3)
部材を、該直線案内軌道に平行に装置した送りねじの回
転により、該送りねじに螺合した雌ねじ部材を介して直
線的に送る機構に於いて、前記雌ねじ部材と被送り部材
とを、送り方向の軸線の回りに回動自在に構成した屈曲
リンクを介して連結したことを特徴とする直線送り機構(1) A member to be fed that is movably installed along a linear guide track is sent linearly through a female threaded member screwed into the feed screw by rotation of a feed screw installed parallel to the linear guide track. A linear feeding mechanism characterized in that the female threaded member and the fed member are connected via a bending link configured to be rotatable around an axis in the feeding direction.
したことを特徴とする特許請求の範囲第１項記載の直線
送り機構(2) The linear feed mechanism according to claim 1, wherein the bending link constitutes a parallel link mechanism.
ずれか一方側に於ける雌ねじ部材側端部を球面軸受を介
して雌ねじ部材に連結したことを特徴とする特許請求の
範囲第１項記載の直線送り機構(3) The bending link is provided at the front and rear of the female threaded member, and the female threaded member side end on either side is connected to the female threaded member via a spherical bearing. Linear feed mechanism described
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61083463A JPS62241633A (en) | 1986-04-11 | 1986-04-11 | Linear feed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61083463A JPS62241633A (en) | 1986-04-11 | 1986-04-11 | Linear feed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62241633A true JPS62241633A (en) | 1987-10-22 |
Family
ID=13803157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61083463A Pending JPS62241633A (en) | 1986-04-11 | 1986-04-11 | Linear feed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62241633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012189172A (en) * | 2011-03-11 | 2012-10-04 | Hitachi Constr Mach Co Ltd | Linear actuator device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129654A (en) * | 1979-03-20 | 1980-10-07 | Crosfield Electronics Ltd | Logitudinal direction feeding drive mechanism |
| JPS6113101A (en) * | 1984-06-29 | 1986-01-21 | Tokyo Optical Co Ltd | Feeding mechanism |
-
1986
- 1986-04-11 JP JP61083463A patent/JPS62241633A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129654A (en) * | 1979-03-20 | 1980-10-07 | Crosfield Electronics Ltd | Logitudinal direction feeding drive mechanism |
| JPS6113101A (en) * | 1984-06-29 | 1986-01-21 | Tokyo Optical Co Ltd | Feeding mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012189172A (en) * | 2011-03-11 | 2012-10-04 | Hitachi Constr Mach Co Ltd | Linear actuator device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4948330A (en) | Alignment stage device | |
| JPH02309011A (en) | Linear guide device | |
| US7159481B2 (en) | Ball screw device and linear motion device | |
| JPS624112A (en) | Chain | |
| JPH11270650A (en) | Ball screw device | |
| JPS61286608A (en) | Raceway groove of ball bearing for rectilinear motion | |
| US10507864B2 (en) | Gearbox assembly for an electric power steering assembly | |
| JPH01199020A (en) | Linear feed mechanism | |
| JP2010236610A (en) | Rolling-element screw device | |
| JPS60263765A (en) | Transfer device using ball screw | |
| JPH11210858A (en) | Circulation type screw device | |
| US4302981A (en) | Longitudinal drive mechanisms | |
| JPS62241633A (en) | Linear feed mechanism | |
| US4515416A (en) | Linear slide bearing | |
| US3974709A (en) | Screw and follower positioning device | |
| JPH04129957U (en) | feed screw device | |
| JPH1151145A (en) | Side lid type ball screw device | |
| CN1250434C (en) | Rolling guide apparatus and roller connector | |
| JP2021181813A (en) | Motion guide device | |
| JPS6225902B2 (en) | ||
| JPH0686884B2 (en) | Linear guide device | |
| KR102626030B1 (en) | Non-circulating type ball screw | |
| JPS61236443A (en) | Table transfer device | |
| GB2045124A (en) | Longitudinal drive mechanisms | |
| JP2575926B2 (en) | Linear guide device |