JPS59161202A - Structure of bearing opposing surface and slide guide surface of machine tool - Google Patents
Structure of bearing opposing surface and slide guide surface of machine toolInfo
- Publication number
- JPS59161202A JPS59161202A JP3348283A JP3348283A JPS59161202A JP S59161202 A JPS59161202 A JP S59161202A JP 3348283 A JP3348283 A JP 3348283A JP 3348283 A JP3348283 A JP 3348283A JP S59161202 A JPS59161202 A JP S59161202A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- layer
- materials
- heat
- layers
- 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
- B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Machine Tool Units (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は工作機械において熱による変形が起きると精度
を低下させる部分に熱が伝導されることを少くした工作
機械の軸受対向面及び摺動案内面の構造に関する。Detailed Description of the Invention Technical Field The present invention relates to a structure of a bearing facing surface and a sliding guide surface of a machine tool, which reduces the conduction of heat to parts that degrade accuracy when deformation due to heat occurs in the machine tool. .
従来技術
工作機械の主軸等軸の軸受部は長時間の連続運転による
軸受温度の上昇につれて熱の伝導が多くなり、運転初期
に対してその軸心が変化し加工精度に悪い影響を及ぼし
ている。 また摺動案内面においては運動部材の高速化
にともなう高い摩擦熱の影響によって案内面が変化を起
し高精度化に要求される安定した案内面の精度が保たれ
ず重要な問題の一つになっている。 このため流体循環
による冷却が行なわれているが主軸の変位に対して満足
すべき効果が得られていない。 またヒートパイプによ
る冷却方法が考えられているがスペース、取付加工、コ
ストの面で実用上の多くの問題を有している。Conventional technology In the equiaxed main shaft bearings of machine tools, heat conduction increases as the bearing temperature rises due to long-term continuous operation, and the axis changes compared to the initial stage of operation, which has a negative effect on machining accuracy. . In addition, in the case of sliding guide surfaces, the guide surfaces change due to the influence of high frictional heat due to the increase in the speed of moving members, and the stable precision of the guide surfaces required for high precision cannot be maintained, which is an important problem. It has become. For this reason, cooling by fluid circulation is performed, but a satisfactory effect on the displacement of the main shaft has not been obtained. A cooling method using a heat pipe has been considered, but it has many practical problems in terms of space, installation process, and cost.
目的
従って本発明は熱変形が起って問題となる部分への熱の
伝導を遮断して、高い機械精度が得られるための軸受対
向面若しくは摺動案内面を提供しようとするものである
。Accordingly, the present invention seeks to provide a bearing facing surface or a sliding guide surface that can obtain high mechanical accuracy by blocking heat conduction to a portion where thermal deformation is a problem.
解決手段
本発明は熱の伝導を遮断したい部分に熱伝導率の低い材
料で断熱層を形成しこの断熱層の加工性の良くない性質
を補なうためにその上に精密加工の可能な層を形成した
多層構造となしたことてある。Solution: The present invention forms a heat insulating layer made of a material with low thermal conductivity in the area where heat conduction is to be blocked, and in order to compensate for the poor workability of this heat insulating layer, a layer that can be precisely machined is added on top of the heat insulating layer. It has been made into a multi-layered structure.
実施例 以下本発明の実施例を図面にもとづき説明する。Example Embodiments of the present invention will be described below based on the drawings.
工作機械の主軸１の前部軸受部において、ころがり軸受
２のインナレースの内径と等しいか僅かに小さい径の７
ランジ３の首部１ａにはディスタンスカラーが嵌装され
、このスラスト軸受側の面に熱伝導率ｋが鉄材５４５０
のｋ ＝ ０．１０５ ｃａｌ／ ｃｍ−ｓｅｃ・００
．５０Ｍ２１のに＝０．１１の値に比べて熱伝導率にの
低い材料例えばセラミック材のＡｌ２Ｏ３のに−０，０
６ｃａｌ／ｃｍ−８ｅｃ・０Ｃ９ｚｒＯ２（ジルコニア
）のに＝ ０．０００６ ＋ Ｓｉ３Ｎ４ のｋ ＝
０．０１３ｚＯ，０３７、ｓｓａのに＝＝ ｏ、 ０７
〜０．１４８の内特に価の小さいジルコニアのドーナツ
型平板を熱伝導率にの低いエポキシ樹脂に＝ ０．００
３４の接着剤若しくはこれに特殊充填物を添加した接着
剤によって接着するか、溶射によって約０．５ｍｒｒ＋
程度の第１層を形成する。 このジルコニアは硬度が高
く加工が困難で層形成後そのまま使用できず衝撃によっ
て欠は易いために、第１層の上に精密加工の可能な材料
例えばステンレス５ＵＳ３０４．この材料はｋ ＝ ０
．０３９でｋの価が小さく而もじん性があり好適である
。 また加工性と耐摩耗性が要求されるときはセラミッ
クＡｌ２Ｏ３等をエポキシ樹脂等の接着剤で接着するか
若しくは溶射によって約０．５′ｎ１１１１程度の第２
層６を形成する。At the front bearing part of the main shaft 1 of the machine tool, there is a diameter 7 that is equal to or slightly smaller than the inner diameter of the inner race of the rolling bearing 2.
A distance collar is fitted to the neck 1a of the lunge 3, and the surface on the thrust bearing side has a thermal conductivity k of 5450.
k = 0.105 cal/cm-sec・00
．． Materials with low thermal conductivity compared to the value of 50M21 = 0.11, such as ceramic materials Al2O3 -0,0
6cal/cm-8ec・0C9zrO2 (zirconia) = 0.0006 + k of Si3N4 =
0.013zO,037, ssa == o, 07
A doughnut-shaped flat plate of zirconia with a particularly low value of ~0.148 is used as an epoxy resin with a low thermal conductivity = 0.00
Approximately 0.5mrr+ by adhesion with No. 34 adhesive or an adhesive with special filler added, or by thermal spraying.
Form a first layer of about 100 ml. This zirconia has high hardness and is difficult to process, so it cannot be used as is after layer formation and is easily chipped by impact. This material has k = 0
．． 039, which has a small value of k and has good toughness, is suitable. In addition, when processability and wear resistance are required, ceramic Al2O3 etc. can be bonded with adhesive such as epoxy resin or thermal sprayed to form a second layer of about 0.5'n1111.
Form layer 6.
そしてディスタンスカラー４と第２層乙の面を研削加工
またはラップ加工で千行且軸直角面に仕上げられている
。 軸受２の嵌合する部１ｂの径は前記第１層、第２層
を形成する厚み分小径につくられており、この部に同様
の手法によって断熱材を主とするセラミック材の第１層
７と加工性を主とする金属またはセラミック材等の第２
層８を形成して、主軸１の１ａ部とともに第２層８の外
径を精密研削加工して軸受との嵌合に適する寸法に仕上
げられている。 軸受２の後側のディスタンスカラー９
は主、軸の１ｂ部の径に嵌合する内径を有しスラスト軸
受側の面にディスタンスカラー４と同様の手法で断熱性
を主とするセラミック材の第１層１０とこの上に加工性
を主とする金属また′はセラミック等の第２層１１を形
成し両側の面が平行で軸に直角となるよう研削加工若し
くはラップ加工されている。 そして両面が平行に仕上
げられたカラー１２を介して主軸１の中央ねじ部１Ｃに
螺合するナツト１３によって締着され、軸受２のプリロ
ードと軸方向の位置が決められている。Then, the surfaces of the distance collar 4 and the second layer B are finished by grinding or lapping into a 1,000-line, axis-perpendicular surface. The diameter of the part 1b into which the bearing 2 is fitted is made smaller by the thickness of the first and second layers, and a first layer of ceramic material mainly made of heat insulating material is applied to this part by the same method. 7 and the second material, such as metal or ceramic material, which mainly has workability.
A layer 8 is formed, and the outer diameter of the second layer 8 along with the portion 1a of the main shaft 1 is precision ground to a size suitable for fitting with a bearing. Distance collar 9 on the rear side of bearing 2
The main body has an inner diameter that fits into the diameter of the 1b portion of the shaft, and a first layer 10 of a ceramic material mainly having heat insulation properties is formed on the surface on the thrust bearing side using a method similar to that of the distance collar 4. A second layer 11 of ceramic or the like is formed of metal or ' mainly composed of metal or ', and is ground or lapped so that both sides are parallel and perpendicular to the axis. It is then tightened by a nut 13 which is screwed into the central threaded portion 1C of the main shaft 1 via a collar 12 whose both surfaces are finished parallel, thereby determining the preload and axial position of the bearing 2.
更に主軸１の小径側の後部軸受部は軸受１４の径に等し
いか僅かに小さな径の１ｄ部に嵌装されるディスクレス
カラー１５は軸受１４側の面にディスタンスカラー３と
同様の手法で断熱を主とするセラミック材の第１層１６
とこの上に加工性を主とする金属またはセラミックの第
２層１７を形成し、ディスタンスカラー１５の外側と第
２層１７の面とが平行で且軸直角となるように研削加工
若しくはラップ加工で仕上げられている。 軸、受１４
が位置する主軸１の１ｅ部は第１層、第２層の厚み分小
径で軸受１４の巾と等しいか僅かにせまい巾に同様の手
法で断熱性を主とするセラミック材の第１層１８とその
上に加工性を主とする金属若しくはセラミックの第２層
１９を形成し、研削加工によって軸受１４の嵌合寸法に
仕上げられている。 軸受１４の外側のディスタンスカ
ラー２０は主軸１ｅに嵌合する穴を有し軸受１４側の面
に同様の手法で断熱性を主とするセラミック材の第１層
２１とその上に加工性を主とする金属若しくはセラミッ
クの第２層２２とを形成して、両面が平行で且軸直角な
面に研削加工若しくはラップ加工によって仕上げられて
いる。 そして主軸１の軸端のねじ部１ｆに螺合するナ
ツト２３によって締着されている。Furthermore, in the rear bearing part on the small diameter side of the main shaft 1, a discless collar 15 fitted in a part 1d having a diameter equal to or slightly smaller than the diameter of the bearing 14 is heat-insulated on the surface on the bearing 14 side using the same method as the distance collar 3. First layer 16 of mainly ceramic material
A second layer 17 of metal or ceramic, which is mainly workable, is formed on this, and is ground or lapped so that the outside of the distance collar 15 and the surface of the second layer 17 are parallel and perpendicular to the axis. It is finished with. Shaft, receiver 14
The portion 1e of the main shaft 1 where is located has a smaller diameter due to the thickness of the first and second layers, and is equal to or slightly narrower than the width of the bearing 14.A first layer 18 of a ceramic material mainly having heat insulating properties is formed using the same method. A second layer 19 of metal or ceramic, which mainly has workability, is formed thereon, and is finished to the fitting dimensions of the bearing 14 by grinding. The distance collar 20 on the outside of the bearing 14 has a hole that fits into the main shaft 1e, and a first layer 21 of a ceramic material mainly for heat insulation properties is coated on the surface on the side of the bearing 14 using a similar method, and a first layer 21 of a ceramic material mainly for machinability is applied thereon. A second layer 22 of metal or ceramic is formed, and both surfaces are finished in parallel and perpendicular to the axis by grinding or lapping. It is fastened by a nut 23 that is screwed into a threaded portion 1f at the end of the main shaft 1.
このように構成された主軸は長時間の連続運転で軸受部
の湿度上昇にもかかわらず熱伝導率の低い断熱材によっ
て熱の伝導が抑制、されるため、主軸の温度変化が少く
また温度変化がゆるネかになる。With a spindle configured in this way, heat conduction is suppressed by the insulating material with low thermal conductivity, even though the humidity in the bearing part increases during long-term continuous operation, so there is little temperature change in the spindle. It becomes loose.
次にすべり軸受を用いる主軸においては、主軸６１の７
ランジ３２につづく軸受部３１ａの軸受面には同様の手
法で断熱性を主とするセラミック材のジルコニア（ｚｒ
ｏ２）の第１層６３とその上に耐焼付性、耐摩耗性のあ
るセラミック材Ａｌ２Ｏ３で直接滑り面となる第２層３
４を形成して、研削加工によってすべり軸受３５が静圧
軸受とし作用する寸法に仕上げられている。 この構成
によって長時間連続運転でも主軸３′１の温度上昇はゆ
るやかである。Next, in the main shaft using a sliding bearing, 7 of the main shaft 61
Zirconia (zr
o2) first layer 63 and a second layer 3 made of a ceramic material Al2O3 having seizure resistance and wear resistance on top of which becomes a direct sliding surface.
4, and is finished by grinding to a size that allows the sliding bearing 35 to act as a hydrostatic bearing. With this configuration, the temperature of the main shaft 3'1 increases slowly even during long-term continuous operation.
次にベッド等の摺動案内面においては、ベッド４１の上
面の例えば２本の平行なＴ字形断面を有び両側の摩擦面
４２ ｂ ｙ ４２ ｃ ’ ４５ ｂ ＊ ４３ Ｃ
を同様の手法によって断熱性を主とするセラミック材の
ジルコニア（ＺｒＯ２）の少くとも約０．５−厚の第１
層４４．４５と、その上に加工性と耐摩耗性、耐焼付性
のあるセラミックＡｌ２Ｏ３の少くとも約ｏ、５１？１
ｍ厚の第２層４６．４７を形成してベラ・−ド研削盤に
より摺動面４２Ｌ、４２１）ｔ ４２Ｑ ：４３ａ ＋
４３ ｂ ｔ ４３ Ｃの第２層４６．４７が平行に
仕上げられている。Next, in the sliding guide surface of a bed, etc., the upper surface of the bed 41 has, for example, two parallel T-shaped cross sections, and friction surfaces 42 b y 42 c ' 45 b * 43 C on both sides.
Using a similar method, the first layer of zirconia (ZrO2), which is a ceramic material mainly having thermal insulation properties, is at least about 0.5-thick.
layer 44.45 and on top of it a processable, wear-resistant, seizure-resistant ceramic Al2O3 of at least about 0.51?1
A second layer 46.47 with a thickness of m is formed and the sliding surface 42L, 421)t 42Q: 43a +
The second layer 46,47 of 43 b t 43 C is finished in parallel.
なお実施例はベッドを示したがこれに限られることなく
他の部の摺動案内面に応用できることは勿論である。Although the embodiment shows a bed, the present invention is not limited to this and can of course be applied to sliding guide surfaces of other parts.
効果
以上詳述したように本発明は金属よりはるかに低い熱伝
導率を有するセラミック材の第１層の上に精密加工の容
易又は可能な金属またはセラミックの第２層を形成した
ので、熱伝導を抑制する構造を複雑にすることなく、ま
たそのためのスペースを必要としないで、主軸あるいは
ベッド等への熱伝導が１１］制されて熱変位が少く長時
間運転でも機械の精度をｄａ持することができ、ｔた変
位そのものもゆるやかになるため熱補償の制御が容易と
なるうえ、ヒートパイプなどを用いるものに比べてコス
トを安くすることができる。 また接触面の第２層に加
工しやすい材料を使用したので高精度の仕上が得られ高
い精度の機械のＬ４ 迄に支１沁２をきたさないもので
ある。 更に第２層には接触する相手側の性質に適応し
た加工性ある材料のうちから選択することによって耐摩
耗性、耐焼付性が層
向上し、機械寿命を長くでき、また金ノ・罵となしたΔ
ときは第１層の欠は易いセラミックを保腹し取扱い上の
配慮を特徴とする特徴を有するものであるEffects As detailed above, the present invention forms a second layer of metal or ceramic that can be easily or precisely processed on the first layer of ceramic material, which has a much lower thermal conductivity than metal, so that thermal conductivity is improved. Heat conduction to the spindle, bed, etc. is suppressed without complicating the structure and without requiring space for it, resulting in little thermal displacement and maintaining machine accuracy even during long-term operation. Since the displacement itself becomes gentler, thermal compensation can be easily controlled, and the cost can be lower than that using a heat pipe or the like. In addition, since a material that is easy to process is used for the second layer of the contact surface, a high-precision finish can be obtained, and it does not take a long time to reach L4 of a high-precision machine. Furthermore, by selecting materials for the second layer that are workable and adaptable to the properties of the other side that comes into contact, wear resistance and seizure resistance can be further improved, machine life can be extended, and metal corrosion resistance can be improved. When the Δ value is 100%, the first layer is made of ceramic that is easily chipped, and has the characteristics of being careful in handling.
第１図は本発明をころがり軸受に実施した主軸ユニット
の図、第２図はすべり軸受に実施した主軸ユニットの部
分図、第６図はベッドの摺動面Ｇこ実施した図である。
１．３１・・・主軸、 ２，１４・・・軸受４．９，
１５．２０・・・ディスタンスカラー５ 、７ 、１０
．１６．１８．２１．３３．４４．４５・・・第１層、
６ 、８ 、１１ 、１７．１９．２２．３４．４
６゜４７・・・第２層、３５・・・すべり軸受４１・・
・ベッド、４２．４３・・・摺動案内面第３図FIG. 1 is a diagram of a main shaft unit in which the present invention is applied to a rolling bearing, FIG. 2 is a partial view of a main shaft unit implemented in a sliding bearing, and FIG. 6 is a diagram in which the present invention is applied to a sliding surface of a bed. 1.31...Main shaft, 2,14...Bearing 4.9,
15.20...Distance color 5, 7, 10
．． 16.18.21.33.44.45...1st layer,
6, 8, 11, 17.19.22.34.4
6゜47...Second layer, 35...Sliding bearing 41...
・Bed, 42.43...Sliding guideway Figure 3
Claims (1)
対向面或いは摩擦熱によって熱が伝導されるベッド等の
摺動案内面にセラミックのような熱伝導率の低い材料で
断熱層を形成し、その上に精密加工可能な材料による層
を形成したことを特徴とする工作機械の軸受対向面及び
摺動案内面の構ム(1) Form a heat insulating layer using a material with low thermal conductivity, such as ceramic, on the bearing facing surface of the main shaft, etc., where heat is conducted by the heat generated by the bearing, or on the sliding guide surface, such as the bed, where heat is conducted, due to frictional heat. A structure of a bearing facing surface and a sliding guide surface of a machine tool, characterized in that a layer made of a material capable of precision machining is formed on the bearing facing surface and a sliding guide surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3348283A JPS59161202A (en) | 1983-02-28 | 1983-02-28 | Structure of bearing opposing surface and slide guide surface of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3348283A JPS59161202A (en) | 1983-02-28 | 1983-02-28 | Structure of bearing opposing surface and slide guide surface of machine tool |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1809788A Division JPS63212426A (en) | 1988-01-28 | 1988-01-28 | Structure of slide guide surface of machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59161202A true JPS59161202A (en) | 1984-09-12 |
| JPH0229444B2 JPH0229444B2 (en) | 1990-06-29 |
Family
ID=12387765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3348283A Granted JPS59161202A (en) | 1983-02-28 | 1983-02-28 | Structure of bearing opposing surface and slide guide surface of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59161202A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168848U (en) * | 1984-10-08 | 1986-05-12 | ||
| JPS61121802A (en) * | 1984-11-15 | 1986-06-09 | Koyo Seiko Co Ltd | Antifriction bearing for machine tool spindle |
| JPS61270043A (en) * | 1985-05-22 | 1986-11-29 | Toyoda Mach Works Ltd | Spindle mechanism |
| JPS61270042A (en) * | 1985-05-22 | 1986-11-29 | Toyoda Mach Works Ltd | Spindle mechanism of machine tool |
| WO1988007910A1 (en) * | 1987-04-07 | 1988-10-20 | Salje Ernst | Spindle system for machine-tools, in particular grinding machines |
| JPH023340U (en) * | 1988-06-09 | 1990-01-10 | ||
| JPH023339U (en) * | 1988-06-09 | 1990-01-10 | ||
| JP2012187702A (en) * | 2011-02-24 | 2012-10-04 | Nsk Ltd | Motor built-in type spindle device |
| WO2013011815A1 (en) * | 2011-07-20 | 2013-01-24 | 日本精工株式会社 | Main shaft apparatus |
| JP2013022699A (en) * | 2011-07-22 | 2013-02-04 | Nsk Ltd | Motor built-in type main spindle device |
| JP2013022698A (en) * | 2011-07-22 | 2013-02-04 | Nsk Ltd | Main spindle device |
| JP2013022674A (en) * | 2011-07-20 | 2013-02-04 | Nsk Ltd | Main spindle device |
| JP2013082018A (en) * | 2011-10-06 | 2013-05-09 | Nsk Ltd | Spindle device of built-in motor system |
| JP2017020559A (en) * | 2015-07-09 | 2017-01-26 | 株式会社荏原製作所 | Slide bearing device |
| JP2017061999A (en) * | 2015-09-25 | 2017-03-30 | 株式会社荏原製作所 | Sliding bearing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593998A (en) * | 1979-01-08 | 1980-07-16 | Shibaura Eng Works Co Ltd | Canned pump |
-
1983
- 1983-02-28 JP JP3348283A patent/JPS59161202A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593998A (en) * | 1979-01-08 | 1980-07-16 | Shibaura Eng Works Co Ltd | Canned pump |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6168848U (en) * | 1984-10-08 | 1986-05-12 | ||
| JPH0314280Y2 (en) * | 1984-10-08 | 1991-03-29 | ||
| JPS61121802A (en) * | 1984-11-15 | 1986-06-09 | Koyo Seiko Co Ltd | Antifriction bearing for machine tool spindle |
| JPS61270043A (en) * | 1985-05-22 | 1986-11-29 | Toyoda Mach Works Ltd | Spindle mechanism |
| JPS61270042A (en) * | 1985-05-22 | 1986-11-29 | Toyoda Mach Works Ltd | Spindle mechanism of machine tool |
| WO1988007910A1 (en) * | 1987-04-07 | 1988-10-20 | Salje Ernst | Spindle system for machine-tools, in particular grinding machines |
| JPH023340U (en) * | 1988-06-09 | 1990-01-10 | ||
| JPH023339U (en) * | 1988-06-09 | 1990-01-10 | ||
| JP2012187702A (en) * | 2011-02-24 | 2012-10-04 | Nsk Ltd | Motor built-in type spindle device |
| WO2013011815A1 (en) * | 2011-07-20 | 2013-01-24 | 日本精工株式会社 | Main shaft apparatus |
| JP2013022674A (en) * | 2011-07-20 | 2013-02-04 | Nsk Ltd | Main spindle device |
| TWI503201B (en) * | 2011-07-20 | 2015-10-11 | Nsk Ltd | Spindle device |
| JP2013022699A (en) * | 2011-07-22 | 2013-02-04 | Nsk Ltd | Motor built-in type main spindle device |
| JP2013022698A (en) * | 2011-07-22 | 2013-02-04 | Nsk Ltd | Main spindle device |
| JP2013082018A (en) * | 2011-10-06 | 2013-05-09 | Nsk Ltd | Spindle device of built-in motor system |
| JP2017020559A (en) * | 2015-07-09 | 2017-01-26 | 株式会社荏原製作所 | Slide bearing device |
| JP2017061999A (en) * | 2015-09-25 | 2017-03-30 | 株式会社荏原製作所 | Sliding bearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0229444B2 (en) | 1990-06-29 |
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