JPS6062438A - Cooling device for ball-and-screw shaft - Google Patents

Cooling device for ball-and-screw shaft

Info

Publication number
JPS6062438A
JPS6062438A JP16784083A JP16784083A JPS6062438A JP S6062438 A JPS6062438 A JP S6062438A JP 16784083 A JP16784083 A JP 16784083A JP 16784083 A JP16784083 A JP 16784083A JP S6062438 A JPS6062438 A JP S6062438A
Authority
JP
Japan
Prior art keywords
ball
slide
screw shaft
air
slide base
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
JP16784083A
Other languages
Japanese (ja)
Inventor
Toshio Suzuki
俊雄 鈴木
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.)
SHIYOUUN KOSAKUSHO KK
Original Assignee
SHIYOUUN KOSAKUSHO KK
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 SHIYOUUN KOSAKUSHO KK filed Critical SHIYOUUN KOSAKUSHO KK
Priority to JP16784083A priority Critical patent/JPS6062438A/en
Publication of JPS6062438A publication Critical patent/JPS6062438A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/125Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating ball screw systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE:To maintain the accuracy of machining of a machine tool which is driven by a ball-and-screw shaft, by providing such a feed device that heat generated from the ball-and-screw shaft is cooled by air stream to maintain the temperature of the ball-and-screw shaft constant. CONSTITUTION:A ball-and-screw shaft 2 which is rotatably supported at both end of a slide base 1 by means of bearings 4, 5, is set in parallel with the guide section 7 of the slide base 1, and is engaged with a ball nut 3 which is secured to a slide 6. The slide 6 is secured thereto with a tool bed 8 carrying a tool and a cooling pad 10 which is connected with an air-stream pipe 12 from an air source, through a pipe connector 11 so that the bad 10 may follow up the movement of the slide 6. Further air is fed from the air source through a control valve, a dehumidifier and a dust remover, and flows into the pipe 12. With this arrangement, the temperature of the ball-and-screw shaft is controlled to a predetermined value so that the accuracy of machining may be maintained.

Description

【発明の詳細な説明】 本発明はボールねじにより駆動される工作機械の駆動部
の冷却に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to cooling of a drive part of a machine tool driven by a ball screw.

最近工作機械のボールねじによる送り駆動部の高速化が
計られている。ボールねじを高速で回転するとボールね
じの発熱によりボールねじが熱膨張し、軸方向に延びる
。従ってボールねじをパルスモータで所要量回転しても
ポールナツトの位置は変化し、スライドの位置決め精度
のばらつきゃ絶対誤差が共に大きくなる。その結果加工
精度に悪影響を及ぼずので、ボールねじの発熱による送
り精度がくるうのを防ぐことが必要である。
Recently, efforts have been made to increase the speed of feed drives using ball screws in machine tools. When the ball screw is rotated at high speed, the ball screw thermally expands due to the heat generated by the ball screw and extends in the axial direction. Therefore, even if the ball screw is rotated by the required amount with a pulse motor, the position of the pole nut changes, and the absolute error becomes large due to variations in the positioning accuracy of the slide. As a result, the machining accuracy is not adversely affected, so it is necessary to prevent the feed accuracy from being affected by the heat generated by the ball screw.

従来、ボールねじの発熱を防ぐ方法として、ボールねじ
を油槽中につけることにより冷却するか、ボールねじの
軸心に長穴をあけて冷却空気を送りねじを冷却する方法
が使用されているが、前者の方法は油の撹拌熱により効
果が少く、ねじが垂直配置即ち竪型の場合構成困難であ
る。
Conventionally, the methods used to prevent heat generation in ball screws include cooling the ball screw by placing it in an oil bath, or drilling a long hole in the shaft center of the ball screw and feeding cooling air to cool the screw. The former method is less effective due to the heat of stirring the oil, and is difficult to construct when the screw is vertically arranged, that is, vertically shaped.

また後者の方法は長いねじの場合はねじの中心に穴をあ
けることが困難である。
Furthermore, with the latter method, it is difficult to drill a hole in the center of a long screw.

本発明はボールねじ部の発熱により工作精度が低下する
ことのないボールねじの冷却装置の提供を目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a ball screw cooling device that does not reduce machining accuracy due to heat generation in the ball screw portion.

本発明はボールねじのナツトに冷却空気を供給する手段
を備えたものである。
The present invention includes means for supplying cooling air to the nut of the ball screw.

以下本発明の実施例を図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.

第7図は本発明を実施する工作機械の送り装置の一部断
面を含む側面図である。工作機械の旋盤例えばスライド
を係合するスライドベース、フライス盤コラムに直接案
内を形成しスライドを係合した場合の該コラム等のスラ
イドベースlの両端に軸受ダ、3に回転自在に支持され
たボールねじコがスライドベースlの案内7に平行に設
けられ、ボールナツト3と係合している。
FIG. 7 is a side view, partially in section, of a feeding device of a machine tool embodying the present invention. A slide base of a machine tool lathe, for example, a slide base that engages a slide, a ball rotatably supported by bearings at both ends of the slide base l of a milling machine column, etc. when a guide is formed directly on the column and the slide is engaged. A screw is provided parallel to the guide 7 of the slide base l and engages with the ball nut 3.

ポールナツト3はスライド基に固定されている。The pole nut 3 is fixed to the slide base.

スライド基には工具9を備えた工具台ざとクーリングパ
ッドioが固定されている。クーリングパッド10には
管接手/lを介して空気源に空気管/コがスライド基の
移動に追従できるように取付けである。パルスモータ/
3はスライドベースlに固定され図示されない連結手段
を介してボールねじコに連結されている。
A tool stand equipped with a tool 9 and a cooling pad io are fixed to the slide base. An air pipe is attached to the cooling pad 10 via a pipe joint to an air source so that it can follow the movement of the slide base. Pulse motor/
3 is fixed to the slide base l and connected to the ball screw via a connecting means (not shown).

パルスモータ/3がボールねじコを回転駆動すると、ボ
ールねじコとポールナツト3との保合によりスライド6
は矢印方向に移動する。
When the pulse motor 3 rotates the ball screw, the ball screw and the pole nut 3 are engaged, and the slide 6 is rotated.
moves in the direction of the arrow.

第2図は第1図のA−A拡大断面図、第3図は第2図の
クーリングパッド底面図、第9図は第3図の側面図であ
る。スライドベースlの上部に案内7があり、案内7に
摺動自在にスライド6が接触し、スライド基に固定した
押え板/ざにより上方へのスライド基の脱出を防止して
いる。ポールナツト3はスライド基にボルト/41によ
り固定されている。スライド基の仕上面6aにクーリン
グパッド/θの仕上面/Qaを当接させてボルト/sに
よりクーリングパッドioはスライド基に固定されてい
る。スライド基には穴/7がクーリングパッド7の穴l
乙に丁度合うように設けである。/Aaは穴/Aへの空
気流入口である。
2 is an enlarged sectional view taken along the line AA in FIG. 1, FIG. 3 is a bottom view of the cooling pad in FIG. 2, and FIG. 9 is a side view in FIG. 3. There is a guide 7 on the upper part of the slide base l, the slide 6 is slidably in contact with the guide 7, and the slide base is prevented from escaping upward by a presser plate fixed to the slide base. The pole nut 3 is fixed to the slide base with a bolt/41. The cooling pad io is fixed to the slide base with bolts/s by bringing the finished surface/Qa of the cooling pad/θ into contact with the finished surface 6a of the slide base. Hole/7 in the slide base is the hole for cooling pad 7.
It is set up to suit you exactly. /Aa is the air inlet to hole /A.

第一図のクーリングパッド10の穴/6はクーリングパ
ッドの内部に形成されているが、第3図に示すようにク
ーリングパッドloを成型材を用いてクーリングパッド
の穴は溝/Abとしてクーリングパッド10の下面に掘
り込むように形成してもよい。また第3図はク−リグパ
ッドの底面図で、第6図は側面図であり、第3図の溝/
6bは1体の空間/Acのようにしても空間IAaの周
辺が第2図のスライド基の穴17を覆っておればよい。
The holes /6 of the cooling pad 10 in Figure 1 are formed inside the cooling pad, but as shown in Figure 3, the cooling pad lo is formed using a molding material, and the holes in the cooling pad are made into grooves /Ab. It may be formed so as to be dug into the lower surface of 10. Fig. 3 is a bottom view of the Kurig pad, and Fig. 6 is a side view.
6b may be made into one space/Ac, as long as the periphery of the space IAa covers the hole 17 of the slide base shown in FIG.

空気の流入口/Aaより流入して穴/6、溝/ A b
、空間/Aaを経てスライド基の穴17より吹き出し、
矢印aのようにポールナツト3の壁面を流れて、ポール
ナツト3とボールねじコとの係合面より発生する熱は矢
印aの冷却空気流によりポールナツト3のケースの壁面
から冷却される。
Air inflow port/Aa, hole/6, groove/A b
, from the hole 17 of the slide base via the space /Aa,
The heat flowing on the wall surface of the pole nut 3 as indicated by arrow a and generated from the engagement surface between the pole nut 3 and the ball screw is cooled from the wall surface of the case of the pole nut 3 by the cooling air flow indicated by arrow a.

この空気の流れは図示しない空気源からコントロールバ
ルブを通し、除湿、防塵装置を経て第1図の空気管12
に流入する。コントロールバルブは基準位置に対して、
ボールねじの温度もしくは伸びを比較し、供給空気量を
調節するので、ボールねじの温度を所定値に制御する。
This air flow is passed from an air source (not shown) through a control valve, through a dehumidifying and dust-proofing device, and then through an air pipe 12 in Fig. 1.
flows into. The control valve is relative to the reference position.
Since the temperature or elongation of the ball screw is compared and the amount of air supplied is adjusted, the temperature of the ball screw is controlled to a predetermined value.

以上説明したように、ボールねじにより駆動される工作
機械の送り装置等において、ボールねじから発生する熱
を冷却空気で冷却し、ボールねじを一定の温度状態にす
るため、工作精度を保持する効果がある。また空気流を
与える手段は簡易である。附近のものをよごすというこ
とかない。ボールねじを備えた周辺に空気圧が高まるの
で防塵効果もある。
As explained above, in the feeding device of a machine tool driven by a ball screw, the heat generated from the ball screw is cooled with cooling air, and the ball screw is kept at a constant temperature, which has the effect of maintaining machining accuracy. There is. Furthermore, the means for providing air flow is simple. It doesn't mean that it pollutes things nearby. It also has a dust-proofing effect because the air pressure increases around the ball screw.

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

第7図は本発明を実施する横型旋盤の一部断面を含む側
面図、第2図は本発明の冷却装置の縦断面図、第3図は
第一図のクーリングパッドの下視図、第9図は第3図の
側面図、第3図は他の実施例のクーリングパッドの下視
図、第6図は第3図の側面図である。 l・・スライドベース λ・・ボールねじ3・・ポール
ナツト ダ、5日軸受 611・スライド 7・・案内
 ざΦ・工具台 デ・・工具 lO・・クーリングパッ
ド /θa・・仕上面 /l・・管接手 /コ・・空気
管 /J・・パルスモータ /f 、 /、tΦ1ボル
ト /A。 17・・穴 /4a・・流入口 /Ab・・溝/Ac・
・空間 ig・・案内骨。 第1図 第2図
7 is a side view including a partial cross section of a horizontal lathe for implementing the present invention, FIG. 2 is a vertical sectional view of the cooling device of the present invention, and FIG. 3 is a bottom view of the cooling pad of FIG. 9 is a side view of FIG. 3, FIG. 3 is a bottom view of a cooling pad of another embodiment, and FIG. 6 is a side view of FIG. 3. l..Slide base λ..Ball screw 3..Pole nut Da, 5th bearing 611.Slide 7..Guide zaΦ.Tool stand D..Tool lO..Cooling pad /θa..Finished surface /l.. Pipe joint /K... Air pipe /J... Pulse motor /f, /, tΦ1 volt /A. 17...Hole /4a...Inlet /Ab...Groove/Ac...
・Space ig・・Guide bone. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] / スライドベースに係合するスライドに固定したボー
ルナツトとスライドベース側に軸承支持したボールスク
リューとを備えたものにおいて、スライドにボールナツ
ト周辺に到る空気通路を設け、ポールナツトを冷却でき
るように空気通路の開口を設けたことを特徴とする工作
機械のボールねじ装置の冷却装置。
/ In a device equipped with a ball nut fixed to the slide that engages with the slide base and a ball screw supported on the slide base side, an air passage is provided in the slide that reaches around the ball nut, and the air passage is designed to cool the pole nut. A cooling device for a ball screw device of a machine tool, characterized by having an opening.
JP16784083A 1983-09-12 1983-09-12 Cooling device for ball-and-screw shaft Pending JPS6062438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16784083A JPS6062438A (en) 1983-09-12 1983-09-12 Cooling device for ball-and-screw shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16784083A JPS6062438A (en) 1983-09-12 1983-09-12 Cooling device for ball-and-screw shaft

Publications (1)

Publication Number Publication Date
JPS6062438A true JPS6062438A (en) 1985-04-10

Family

ID=15857050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16784083A Pending JPS6062438A (en) 1983-09-12 1983-09-12 Cooling device for ball-and-screw shaft

Country Status (1)

Country Link
JP (1) JPS6062438A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250746A (en) * 1989-03-24 1990-10-08 Okuma Mach Works Ltd Cooling method for ball screw
JPH0516266U (en) * 1991-07-04 1993-03-02 株式会社新潟鐵工所 Injection molding equipment
WO2016009889A1 (en) * 2014-07-18 2016-01-21 Thk株式会社 Cooling nozzle for screw device and cooling nozzle for movement-guiding device
TWI664052B (en) * 2018-10-22 2019-07-01 國立勤益科技大學 Cooling device for processing machine feed system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59227352A (en) * 1983-06-10 1984-12-20 Anritsu Corp Cooling device of ball screw mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59227352A (en) * 1983-06-10 1984-12-20 Anritsu Corp Cooling device of ball screw mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250746A (en) * 1989-03-24 1990-10-08 Okuma Mach Works Ltd Cooling method for ball screw
JPH0516266U (en) * 1991-07-04 1993-03-02 株式会社新潟鐵工所 Injection molding equipment
WO2016009889A1 (en) * 2014-07-18 2016-01-21 Thk株式会社 Cooling nozzle for screw device and cooling nozzle for movement-guiding device
JP2016029304A (en) * 2014-07-18 2016-03-03 Thk株式会社 Cooling nozzle for screw device and cooling nozzle for motion guide device
TWI582323B (en) * 2014-07-18 2017-05-11 Thk股份有限公司 Cooling nozzle for screw device and cooling nozzle for motion guide device
US10060522B2 (en) 2014-07-18 2018-08-28 Thk Co., Ltd. Screw device cooling nozzle and motion guide device cooling nozzle
TWI664052B (en) * 2018-10-22 2019-07-01 國立勤益科技大學 Cooling device for processing machine feed system

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