JPS5877430A - Cooling unit for rotary shaft - Google Patents
Cooling unit for rotary shaftInfo
- Publication number
- JPS5877430A JPS5877430A JP56176776A JP17677681A JPS5877430A JP S5877430 A JPS5877430 A JP S5877430A JP 56176776 A JP56176776 A JP 56176776A JP 17677681 A JP17677681 A JP 17677681A JP S5877430 A JPS5877430 A JP S5877430A
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- cooling
- cooling unit
- elements
- inner peripheral
- 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.)
- Granted
Links
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
- B23Q11/00—Accessories 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
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、高速−転する回転輪の熱款散が良好に行な＃
ＡｌＩｂように企図した回転軸の冷却装置に関し、４１
に工作機械のスピンドルに組み込んで好適１に％のであ
る・
工作機械のスピンドルの転が９軸受の温度上昇は、これ
に伴う熱変形によシ被加工物の加工精度を劣化盲せえり
、場合によっては転がｐ輪受自体の鉤付き０１Ｅ因とな
ることもある。このえめ、−受の温度上昇を低くする方
法として極微量のグリースを軸受に封入し、軸受の転が
）接触部てグリースが受ける大きな変形速度に起因し丸
軸受の発熱量を小さくする方法が採用されている・
しかしながら、近年の工作機械におけるスピンドルの高
速化に伴い、加工精度の確保の九めに軸受の発熱を一層
小さくする必要にせまられてお９、軸受の外輪を支持す
るハウジング内管油中水或いは空気等の流体で冷却する
方法が多用されつつある。このような従来の工作機械の
スピンドルの冷却構造管表す第１８ｉｌＫ示すようこれ
ら軸受２０周１１に位置するハウジング３内には、冷却
油が供給される給油口４と軸受２との間で熱交換して高
自となった冷却油を排出する排油口５とを具えた油＃Ｉ
６が形成されてｉる・−毅に、軸受２の外輪はハウジン
グ３Ｋｍ触しているため、その内輪よりも熱の放散性が
嵐〈て温度も低ｖｈＯが普通である。しかし、上述しえ
冷却構造では更に外輪の温度が内輪よ〕も下がる傾向に
あるため、内輪と外輪との１ｉｕｌ！差が大きくなって
熟＊ｉｉ差によル軸受すきまがよ〕小さく ｔ ＊ ｓ
今後、スピンドルの一層の高速化を推進する上で仁の軸
受す１１まの減少が新たな発熱原因となる可能性がある
。DETAILED DESCRIPTION OF THE INVENTION The present invention provides excellent heat dissipation of a rotating wheel rotating at high speed.
Regarding a cooling device for a rotating shaft designed as AlIb, 41
It is suitable to be incorporated into the spindle of a machine tool at a rate of 1%. When the spindle of a machine tool rotates, the temperature of the bearing increases, resulting in thermal deformation that deteriorates the machining accuracy of the workpiece. In some cases, rolling may cause the p-wheel bridge itself to become hooked. In order to reduce the temperature rise of the bearing, there is a method of sealing a very small amount of grease in the bearing to reduce the amount of heat generated by the round bearing due to the large deformation rate that the grease undergoes at the contact area when the bearing rolls. However, as spindles in machine tools have become faster in recent years, it has become necessary to further reduce the heat generated by bearings in order to ensure machining accuracy9. Cooling methods using fluids such as water in pipe oil or air are increasingly being used. As shown in the cooling structure of the spindle of a conventional machine tool, the housing 3 located around the circumference 11 of these bearings 20 has heat exchange between the bearing 2 and the oil filler port 4 to which cooling oil is supplied. Oil #I equipped with an oil drain port 5 for discharging the cooling oil that has become stale.
Since the outer ring of the bearing 2 is in contact with the housing 3 km, the outer ring of the bearing 2 has better heat dissipation than the inner ring, and the temperature is usually lower than that of the inner ring. However, with the above-mentioned cooling structure, the temperature of the outer ring tends to be lower than that of the inner ring, so the temperature of the inner ring and outer ring is 1iul! As the difference becomes larger, the bearing clearance becomes smaller due to the difference.
In the future, as spindle speeds are further increased, the reduction in the number of bearings to 11 may become a new cause of heat generation.
スピンドルに＃ｉ工具交換装置の一部が装備されている
ことが多−ため、スピンドル１２内こヒートバイブ中冷
却流体を通すこし訴因−である。Since the spindle is often equipped with a part of the #i tool changer, it is difficult to pass the cooling fluid through the heat vibration inside the spindle 12.
そζで、軸受の内輪側の熱放散會良くするためＫＦｉス
ピンドルＯ外周Ｓ會冷却することも考えられるが、―冷
却で嬬高速回転軸Ｏ油の剪断変形が新た１に褪熱要因と
碌る。又、空気冷却では熱伝導率の低−空気會低謳にし
ておかなければならず、空気中の水分の結露と軸受内へ
の突気流入によるグリース劣化が問題となって来る。Therefore, cooling the outer circumference of the KFi spindle to improve heat dissipation on the inner ring side of the bearing may be considered, but cooling can increase the shear deformation of the high-speed rotating shaft oil as a new cause of heat loss. Ru. In addition, in air cooling, the thermal conductivity of the bearing must be kept low, and deterioration of the grease due to condensation of moisture in the air and sudden inflow of air into the bearing becomes a problem.
本発明は、二種の金属を組み合わせた一Ｎに電流を流す
と両者の接合部て熱の吸収或いは発生が起こるというペ
ルチェ効果に着目し、上述した従来の高速回転スピンド
ルの冷却装置における種々の不＾合に鑑みて効率の非常
によい熱放散性に優れた冷却装置を提供するととｔ−目
的とする。The present invention focuses on the Peltier effect, in which heat is absorbed or generated at the joint between two metals when a current is passed through a 1N current, and the present invention utilizes various methods in the conventional high-speed rotating spindle cooling device described above. In view of the above disadvantages, it is an object of the present invention to provide a cooling device that is highly efficient and has excellent heat dissipation properties.
この目的を達成する本発明の回転軸の冷却装置にかかる
構成は、回転軸管駆動回転自在に支持するハウジング内
に前記回転軸を堆シ囲み且つ外周側が発熱部となると共
に内周側が畷熱部となった円筒状の熱電素子を固定し、
更にこの熱電素子の外周側に冷却手段を設けた仁と會特
黴とするものである・
以下、本発明による回転軸の冷却装置を高速回転し得る
工作機械のスピンドルに組み込んだ一実施例について、
第２図〜第５図を参照しなから膵ｍに説明する。本実施
例の全体の構造を表す１１２図に示すように、先端部に
図示しない工＾が嵌合されるテーパ穴１１ｔ形成したス
ピンドル１２内には、スピンドル１２に対して工具の一
定及び固定解除を行う′ドローバ１３がスピンドル１２
の中心軸に沿って移動自在に取り付けられてｉる・前記
スピンドル１２＆！陶後一対ｅｌＨｌｘ４．ｘｓ會介し
てハウジング１６に駆動−転自１！ＩＫ支持されておや
、これら軸受１４゜１１ｓはそれぞれ軸受押え１７．１
８及びナツト１９１１０等によ）スピンドル１２とハウ
ジングＩｌｌとの閏に固定されて−る。The configuration of the rotating shaft cooling device of the present invention that achieves this object is such that the rotating shaft is surrounded by a housing that rotatably supports the rotating shaft tube, and the outer circumferential side serves as a heat generating part while the inner circumferential side serves as a heat generating part. Fix the cylindrical thermoelectric element that became the part,
Furthermore, a cooling means is provided on the outer periphery of this thermoelectric element.Hereinafter, an example will be described in which a rotating shaft cooling device according to the present invention is incorporated into a spindle of a machine tool capable of high speed rotation. ,
The pancreas m will be explained with reference to FIGS. 2 to 5. As shown in FIG. 112 showing the overall structure of this embodiment, the spindle 12 has a tapered hole 11t into which a not-shown tool is fitted at the tip. The drawbar 13 is connected to the spindle 12.
The spindle 12 &! is mounted movably along the central axis of the spindle 12&! Suego pair elHlx4. Drive-rotation 1 to the housing 16 through the xs connection! These bearings 14゜11s are supported by IK, and each bearing holder 17.1
8 and nuts 19110, etc.) to the lock between the spindle 12 and the housing Ill.
一方、これら軸受１４．１５０間のハウジング１・の内
周１１に＆！曽状【なす冷却装置２１が設けられて＆）
、仁の冷却装置２１ｔ−拡大しえ菖ｓＩａ及びそのＷ−
Ｗ矢視断ｍｅ衆す菖４図に示すよ５に、本実施例ては一
端ｉＩが切）欠かれ″ｋｓＩ状ｔ−なすＮｉＭのテルル
化ビスマス２２と同形状の！渥Ｏテルル化ビスマス２３
とが交互に樹ｊ１１１４會介して配置され、この樹脂＃
ｉ２４によ）一つをＩＩＫ仕切られる筒状の内部鋼板２
Ｓと外部端４［２６と−ＩＩＸＭＷｉのテルル化ビスマ
ス２２の内周画と１’ ｊｌ ｔ）テルル化ビスマスｚ
ｓｏ外ｓ暦とに！Ｉｍ！してｉる・これらは樹Ｍ板２４
と同様な熱伝導率中導電率が小さなエポキシ樹脂や四フ
ッ化エチレン１１ＪＩＩ等の樹脂７ランジ２７て一体化
されてお〕、これらの内周画中外周画は比較的熱伝導率
ｏｍｈセラミック等の絶緻層２８てコーティングされて
いる・１１１４図中ｏ ｖ −ｖ矢視断１１を表す菖Ｓ
図に示すように、内部銅板２６０両端ＩＩＫはハウジン
グ１６の外部から導かれ大リード４１２９が電気的に接
続し、内部銅板２５が吸熱側となシ且つ外部銅板３藝が
発熱部となるように露Ｓ＠中、右端の内部銅＊２Ｓが正
電位ＫＩＩ絖し且つ左端の内部銅４［２ｓが負電位Ｎｉ
Ｍ続してｉる・本実施例では熱電素子としてＭ＃１のテ
ルル化ビスマス２２とｙｌｉｏテルル化ビス！ス２３と
音便用してｉるが、ペルチェ効果ａ６る４のであれば他
のＰＭＩＩ！合素子＊１任意に使うことが可能である。On the other hand, on the inner circumference 11 of the housing 1 between these bearings 14 and 150 &! Zeng [Eggplant cooling device 21 is provided &)
, Jin's cooling device 21t-enlarged irises sIa and its W-
As shown in Figure 4, in this example, one end of iI is cut off, and the bismuth telluride of the same shape as NiM bismuth telluride 22 is cut in the shape of ksI. 23
and are arranged alternately through the tree j1114, and this resin #
i24) A cylindrical internal steel plate 2 partitioned into IIK
S and outer end 4 [26 and -IIXMWi inner circumference of bismuth telluride 22 and 1' jl t) bismuth telluride z
So out of calendar! Im! I am doing this.These are tree M board 24.
These inner and outer circumferences are made of a resin such as epoxy resin or tetrafluoroethylene 11JII, which has a low thermal conductivity and low electrical conductivity, and these inner and outer circumferences are made of a material with a relatively low thermal conductivity, such as OMH ceramic, etc. 1114 The irises S representing the o v - v arrow cross section 11 in the figure are coated with a very dense layer 28
As shown in the figure, both ends IIK of the internal copper plate 260 are guided from the outside of the housing 16 and electrically connected to the large lead 4129, so that the internal copper plate 25 is on the heat absorption side and the external copper plate 3 is the heat generating part. During dew S@, the right-most internal copper *2S is at a positive potential KII, and the left-most internal copper 4[2s is at a negative potential Ni
In this example, M#1 bismuth telluride 22 and ylio bis telluride are used as thermoelectric elements. I use S23 for sound delivery, but if it has Peltier effect A6ru4, other PMII! Combined element*1 can be used arbitrarily.
この冷却装置２１の外周とハウジング１６と０１１４１
に＃ｉ、冷却油が送給される冷却Ｍ供給路３゜とζＯ冷
却油を排出する冷却油排出路３１とに適過する油！１１
８２−ｆｉｓ威されてお）、ζ０油擲３２を流れる冷却
油が高温となる外部端［２６’を冷却するようになって
ｉるり本実Ｊ１１１ｆｌては冷却装置＝１の冷却手数と
してその周囲に冷却油ｔｍすようにしたが、＊０周知の
冷却手段音用ｉてもよ％／％こと轄轟然である・
従って、内部鋼４［２ｓ及び外部鋼板２６を介して扇動
テルル化ビスマス２２及びＰ ［１９テルル化ビスｗＸ
３３に通電すると、ペルチェ効果によｐ内部鋼４［ｍ５
ＫｌｌｌＩｋ作用が発生し、高速１転するスピンドル１
３から０＠會吸駅する友め、スピンドル１２及び軸受１
４ｅ１５が高温化する虞は１ｋｖｈ・一方、これと並行
して外部鋼板２６が発熱するが、―溝３ｚｔ流れる冷却
油が外部銅板！１６と０間で熱交換を行い、外部鋼板２
６が冷却されて高温となりえ冷却油が冷却油排出路３１
からハクレンダ１６外に導き出される◎この外部鋼ＩＩ
Ｅ雪・の冷却によｐ内部鋼Ｉ［２５の微熱効率が高まる
ため、スピンドル１２及び軸受１４．１！！ｅ冷却が一
層促進される０こＯように本発明の一転軸の冷却装置に
よると、高速１転するスピンドルの周Ｓｔ熱電嵩子で取
）■み、ペルチェ効果を利用してスピンドルＯ熱管冷却
手段で吸熱するようにし喪ので、熱放散性に優れえ効率
の高−冷却を行うことが可能である・The outer periphery of this cooling device 21 and the housing 16 and 01141
#i, oil that flows into the cooling M supply path 3° through which cooling oil is supplied and the cooling oil discharge path 31 through which ζO cooling oil is discharged! 11
82-fis), the cooling oil flowing through the ζ0 oil pump 32 cools the external end [26' where the temperature is high. However, the cooling oil tm was applied to the well-known cooling means. and P [19 bis telluride wX
33, the P internal steel 4 [m5
Spindle 1 rotates once at high speed due to KllIk action.
3 to 0＠ Friends at the meeting station, spindle 12 and bearing 1
The risk that 4e15 will heat up is 1kvh.Meanwhile, the external steel plate 26 generates heat in parallel, but the cooling oil flowing through the groove 3zt is the external copper plate! Heat exchange is performed between 16 and 0, and the external steel plate 2
6 is cooled down to a high temperature, and the cooling oil flows through the cooling oil discharge path 31.
◎This external steel II
Spindle 12 and bearing 14.1 because cooling of E snow increases the slight thermal efficiency of p internal steel I [25! ! In order to further promote cooling, the single-rotation shaft cooling device of the present invention uses a thermoelectric bulkhead around the spindle that rotates at high speed, and uses the Peltier effect to cool the spindle O-thermal tube. Since it absorbs heat by means of cooling, it has excellent heat dissipation properties and can perform highly efficient cooling.
１１１１１は従来のスピンドルの冷却装置の概略構造【
表す断−図、第２図社本発明會工作機械のスピンドルに
応用した一実施例の概略構造を貴す断ｍ図、１１３図は
その冷却鋏置〇一部の詳顔構造【拡大した断―図、菖４
図蝶そのＷ−Ｗ矢１１ｒｒａｉｌＬ ｌ１ｓｌｌａそｔ
ｏｖ−ｖ矢視断−図であり、図中の符号で、
１２ｔｉスピンドル、
１４、ｉｓは軸受、
草６はハウジング、
２１は冷却装置、
２２ ハＭ Ｗ−＋？ルル化ビスマス、２３はＰ １１
９テルル化ビスマス、
２４＆！＠ｉｌ［，
２５は内部銅板、
２６は外部鋼板、
２＊＆！リード線、
ａＯは冷却油供給路、
８１は冷却油＃出路、
３２＆を鎗壽である。
特許出願人
三菱重工業株式会社
復代理人
弁鳳士党石士部
（他１名）11111 is a schematic structure of a conventional spindle cooling device [
Figure 2 is a cross-sectional view showing the schematic structure of an embodiment applied to a spindle of a machine tool of the present invention, and Figure 113 shows the cooling scissors and part of the detailed face structure -Figure, irises 4
Figure butterfly so W-W arrow 11rrailL l1slla sot
It is an OV-V cross-sectional view, and the symbols in the figure are: 12ti spindle, 14, is bearing, 6 is housing, 21 is cooling device, 22 is MW-+? Bismuth luride, 23 is P 11
9 bismuth telluride, 24 &! @il[, 25 is the internal copper plate, 26 is the external steel plate, 2*&! Lead wires, aO is the cooling oil supply path, 81 is the cooling oil #output path, and 32 & is the lead wire. Patent Applicant Mitsubishi Heavy Industries, Ltd. Sub-Agent Benhoshi Toshishibu (and 1 other person)
Claims (1)
記Ｂ＠軸１＊＊囲み且つ外周側が発熱部となると共に内
周側−１ＩＸＩＩｉＬ熱部となっ九円筒状の熱電素子ｔ
ｍ定し、災にこの熱電素子の外周側に冷却手段管設けた
ことを特徴とする１転軸の冷却装置。Inside the housing that rotatably supports the rotating shaft, there is a cylindrical thermoelectric element t, which surrounds the B@shaft 1** and whose outer circumferential side becomes a heat generating part, and whose inner circumferential side -1IXIIiL heat part.
A single rotation axis cooling device characterized in that a cooling means tube is provided on the outer circumferential side of the thermoelectric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56176776A JPS5877430A (en) | 1981-11-04 | 1981-11-04 | Cooling unit for rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56176776A JPS5877430A (en) | 1981-11-04 | 1981-11-04 | Cooling unit for rotary shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5877430A true JPS5877430A (en) | 1983-05-10 |
| JPH025545B2 JPH025545B2 (en) | 1990-02-02 |
Family
ID=16019626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56176776A Granted JPS5877430A (en) | 1981-11-04 | 1981-11-04 | Cooling unit for rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5877430A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168848U (en) * | 1984-10-08 | 1986-05-12 | ||
| JPS6239955U (en) * | 1985-08-28 | 1987-03-10 | ||
| WO2014195058A1 (en) * | 2013-06-06 | 2014-12-11 | Bilz Werkzeugfabrik Gmbh & Co. Kg | Tool clamping system |
| CN108942398A (en) * | 2018-07-08 | 2018-12-07 | 深圳市爱贝科精密机械有限公司 | A kind of electro spindle cooling body |
| CN109412325A (en) * | 2018-11-16 | 2019-03-01 | 江苏思维福特机械科技股份有限公司 | A kind of electric machine main shaft |
-
1981
- 1981-11-04 JP JP56176776A patent/JPS5877430A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168848U (en) * | 1984-10-08 | 1986-05-12 | ||
| JPH0314280Y2 (en) * | 1984-10-08 | 1991-03-29 | ||
| JPS6239955U (en) * | 1985-08-28 | 1987-03-10 | ||
| WO2014195058A1 (en) * | 2013-06-06 | 2014-12-11 | Bilz Werkzeugfabrik Gmbh & Co. Kg | Tool clamping system |
| CN108942398A (en) * | 2018-07-08 | 2018-12-07 | 深圳市爱贝科精密机械有限公司 | A kind of electro spindle cooling body |
| CN109412325A (en) * | 2018-11-16 | 2019-03-01 | 江苏思维福特机械科技股份有限公司 | A kind of electric machine main shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH025545B2 (en) | 1990-02-02 |
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