JPS631851A - Method of cooling feed-secrew-shaft of straight-line-motion-generating mechanism - Google Patents
Method of cooling feed-secrew-shaft of straight-line-motion-generating mechanismInfo
- Publication number
- JPS631851A JPS631851A JP14462186A JP14462186A JPS631851A JP S631851 A JPS631851 A JP S631851A JP 14462186 A JP14462186 A JP 14462186A JP 14462186 A JP14462186 A JP 14462186A JP S631851 A JPS631851 A JP S631851A
- Authority
- JP
- Japan
- Prior art keywords
- screw shaft
- shaft
- rotor
- fixed
- cooling
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims 2
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000012809 cooling fluid Substances 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
(産業上の利用分!)
この発明は、出願人が先に出願した特願昭61−625
67号及び特願昭61−62668号並びに特願昭61
−102814号等による発明に係わる直線運動発生機
構において、直線運動を行う移動本体の中心となる滑り
ねじ軸又はボールねじ軸の内部に冷却用の流体流通用の
中空貫通孔を軸方向に穿設し、この両端に流体の流入口
及び流出口をそれぞれ具設した直線運動発生機構の電動
機送りねじ軸の強制冷却法に関するものである。[Detailed description of the invention] [Object of the invention] (Industrial use!) This invention is based on the patent application No. 61-625 previously filed by the applicant.
No. 67 and Japanese Patent Application No. 61-62668 and Japanese Patent Application No. 1983
- In the linear motion generating mechanism according to the invention disclosed in No. 102814, etc., a hollow through hole for cooling fluid circulation is bored in the axial direction inside the sliding screw shaft or ball screw shaft that is the center of the moving body that performs linear motion. The present invention relates to a forced cooling method for a motor feed screw shaft of a linear motion generating mechanism, which has a fluid inlet and an outlet at both ends thereof.
(従来の技術)
従来電動機の冷却法は一般に回転子軸にファンを取付け
、室内の空気を攪拌し循環させて冷却したり又は電動機
の外部にファンを設けて外側から冷却していた。また従
来の電動機を外部に設置した直線運動発生装置における
送りねじ装置の油冷却法も一部で行われているが、(参
考文献:符開公昭58−186545号送りねじ装置、
第2図参照)大きな孔はあけられず、強制油圧により、
しかも送りねじ軸が回転しているため油シール部からの
油洩れの同角が大きな難点となっている。(Prior Art) Conventional methods for cooling electric motors generally involve attaching a fan to the rotor shaft and stirring and circulating indoor air to cool the motor, or installing a fan outside the electric motor to cool the motor from the outside. In addition, oil cooling of the feed screw device in conventional linear motion generators in which an electric motor is installed externally has been used in some cases.
(See Figure 2) Large holes cannot be drilled, and forced hydraulic pressure is used to
Moreover, since the feed screw shaft rotates, oil leakage from the oil seal is a major problem.
(問題点を解決するための手段)
そこでこの発明は、従来の装置とは全然異り電動機を内
蔵した移動本体が送りねじ軸上を移動するので、送りね
じ軸が固定されているため冷却用の流体の流入流出部に
特殊の回転シール接手の必要がないので極めて容易に強
制冷却を可能とするものである。(Means for Solving the Problems) Therefore, this invention is completely different from the conventional device in that a movable body with a built-in electric motor moves on the feed screw shaft. Since there is no need for special rotary seal joints at the inflow and outflow portions of the fluid, forced cooling can be performed extremely easily.
(実施例)
以下本発明の一実施列を図面(第1図)に従って説明す
ると、基台(1)に滑りねじ軸又はボールねじ軸(2)
の両端を固定し、該ねじ軸(2)に電動機(財)の回転
子軸(3)をナツト(4)により回転自在に螺合し、ま
た回転子軸(3)に固着した回転子(5)の周囲には固
定子(6)を遊嵌し、該固定子(6)の外側に移動本体
(7)を形設して電舶1つの回転力を移動本体(7)の
直線運動に変換する直線連動発生機構において、上記の
ねじ軸(2)の内部に冷却用の流体流通用の貫通孔(8
)を軸方向に穿設し、この両端に流体の流入口(9)及
び流出口υOをそれぞれ具設して成る送りねじ軸の冷却
法である。(Example) One embodiment of the present invention will be described below with reference to the drawings (Fig. 1).
A rotor shaft (3) of an electric motor (goods) is rotatably screwed onto the screw shaft (2) with a nut (4), and a rotor (3) fixed to the rotor shaft (3) is fixed at both ends. 5), a stator (6) is loosely fitted around the movable body (7), and a moving body (7) is formed outside the stator (6) to transfer the rotational force of one electric boat to the linear movement of the moving body (7). In the linear interlock generation mechanism that converts into
) is bored in the axial direction, and a fluid inlet (9) and an outlet υO are provided at both ends of the feed screw shaft.
(作用及び効果)
本発明は以上説明のように第2図に示す従来の外部に設
置した電動機による直線運動発生機構と異り、送りねじ
軸が回転することなく両端が固定されているので、流体
の回転シール接手を必要とせず固定シールのため高圧の
流体使用に充分耐えられるものである。又本装置の電動
機の回転子軸は従来JI8規格の定める直径の2倍程度
の太軸に剛性1強度ともに充分耐え得る貫通孔(8)を
設けたことにより、油冷却のほか外気をそのまま冷媒と
して吸引させ空気自体で冷却させることができ、太軸の
ため回転千部の放熱面積も広くなり冷却効果も高まると
ともに大巾な部品の削減が図られ、コンパクト化し保守
管理が容易化するなど幾多の効果を発揮する送りねじ軸
の冷却法である。(Operations and Effects) As explained above, the present invention differs from the conventional linear motion generation mechanism using an externally installed electric motor as shown in FIG. The rotary seal for fluid does not require a joint and is a fixed seal, so it can withstand high-pressure fluid use. In addition, the rotor shaft of the electric motor of this device has a through hole (8) that has sufficient rigidity and strength in the thick shaft, which is about twice the diameter specified by the conventional JI8 standard, so that in addition to oil cooling, outside air can be used as a refrigerant. It can be sucked in and cooled by the air itself, and the thick shaft increases the heat dissipation area of the rotating parts, increasing the cooling effect, reducing the number of parts, making it more compact, and making maintenance management easier. This is a cooling method for the feed screw shaft that exhibits the following effects.
第1図は本発明の実施例を示す縦断面図、第2図は従来
の装置における実施列である。FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a diagram showing an implementation of a conventional device.
Claims (1)
軸に電動機の回転子軸をナットにより回転自在に螺合し
、また回転子軸に固着した回転子の周囲には固定子を遊
嵌し、該固定子に移動本体を形設して電動機の上記回転
子の回転力を移動本体の直線運動に変換する直線運動発
生機構において、上記のねじ軸の内部に冷却用の流体流
通用の貫通孔を軸方向に穿設し、この両端に流体の流入
口及び流出口をそれぞれ具設して成る直線連動発生機構
の送りねじ軸の冷却法。Both ends of a sliding screw shaft or a ball screw shaft are fixed to the base, and the rotor shaft of the electric motor is rotatably screwed onto the shaft with a nut. Also, a stator is installed around the rotor fixed to the rotor shaft. In a linear motion generating mechanism in which a movable body is loosely fitted to the stator and converts the rotational force of the rotor of the electric motor into linear motion of the movable body, a cooling fluid is distributed inside the screw shaft. A method for cooling a feed screw shaft of a linear interlock generation mechanism, which comprises a through hole drilled in the axial direction, and a fluid inlet and outlet provided at both ends of the feed screw shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14462186A JPS631851A (en) | 1986-06-19 | 1986-06-19 | Method of cooling feed-secrew-shaft of straight-line-motion-generating mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14462186A JPS631851A (en) | 1986-06-19 | 1986-06-19 | Method of cooling feed-secrew-shaft of straight-line-motion-generating mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS631851A true JPS631851A (en) | 1988-01-06 |
Family
ID=15366291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14462186A Pending JPS631851A (en) | 1986-06-19 | 1986-06-19 | Method of cooling feed-secrew-shaft of straight-line-motion-generating mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS631851A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992008583A1 (en) * | 1990-11-08 | 1992-05-29 | Fanuc Ltd | Industrial robot with means for cooling ball screw shaft |
JPH0493547U (en) * | 1990-12-28 | 1992-08-13 | ||
EP0654325A1 (en) * | 1993-06-08 | 1995-05-24 | Kabushiki Kaisha Yaskawa Denki Seisakusho | Apparatus for driving arms of industrial robot |
JPH09505384A (en) * | 1994-09-07 | 1997-05-27 | コミツサリア タ レネルジー アトミーク | Telescopic system |
WO2002093716A1 (en) * | 2001-05-16 | 2002-11-21 | Power Jacks Limited | Improved electromechanical linear actuator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60220257A (en) * | 1984-04-13 | 1985-11-02 | Nippon Seiko Kk | Device for cooling feed screw |
-
1986
- 1986-06-19 JP JP14462186A patent/JPS631851A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60220257A (en) * | 1984-04-13 | 1985-11-02 | Nippon Seiko Kk | Device for cooling feed screw |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992008583A1 (en) * | 1990-11-08 | 1992-05-29 | Fanuc Ltd | Industrial robot with means for cooling ball screw shaft |
US5282390A (en) * | 1990-11-08 | 1994-02-01 | Fanuc Ltd. | Industrial robot with means for cooling a linear motion nut and screw shaft |
JPH0493547U (en) * | 1990-12-28 | 1992-08-13 | ||
EP0654325A1 (en) * | 1993-06-08 | 1995-05-24 | Kabushiki Kaisha Yaskawa Denki Seisakusho | Apparatus for driving arms of industrial robot |
JPH09505384A (en) * | 1994-09-07 | 1997-05-27 | コミツサリア タ レネルジー アトミーク | Telescopic system |
WO2002093716A1 (en) * | 2001-05-16 | 2002-11-21 | Power Jacks Limited | Improved electromechanical linear actuator |
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