JPS60179520A - Bearing of machine tool and its forming method - Google Patents
Bearing of machine tool and its forming methodInfo
- Publication number
- JPS60179520A JPS60179520A JP3385884A JP3385884A JPS60179520A JP S60179520 A JPS60179520 A JP S60179520A JP 3385884 A JP3385884 A JP 3385884A JP 3385884 A JP3385884 A JP 3385884A JP S60179520 A JPS60179520 A JP S60179520A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- shaft
- fitted
- ring
- bearing
- 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
- 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
-
- 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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/015—Frames, beds, pillars
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Sliding-Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は工作機械等の軸承部に係り、特に軸支部及び回
転軸？セラミックで形成した工作機械等の軸承部に係る
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shaft bearing of a machine tool, etc., and particularly to a shaft bearing and a rotating shaft. Pertains to shaft bearings for machine tools, etc. made of ceramic.
従来、セラミックはもろいという概念があつたが、素材
組成物の改良に伴って従来のセラミックに見られなかっ
た物性ン仔するようになった最近、これらのセラミック
のもつ特性ケ生かして諸機械の部材？製作する動きが見
られるようになった。特にセラミックのもつ耐熱性、耐
摩耗性？利用して工作機械等の軸支部２回転軸等ｔセラ
ミックで形成することが考えられるが、セラミックは硬
性が高いという点が逆に加工性か悪いという難点となっ
ている。例えば第１図忙示すように、精密工作機の主軸
台１ｖセラミツクで形成し、軸支部２の軸支孔３にセラ
ミックの軸受環４１に嵌合させ、該′＠受環４にセラミ
ックの（ロ）転軸５を軸支させる場合、軸支部２゜軸支
環４１回転軸５ともにセラミックなので、芯合わせ、同
軸度を高めることが極めて困難である。Traditionally, ceramics were thought to be brittle, but as the material composition has improved, they have developed physical properties that were not found in conventional ceramics.Recently, these characteristics have been utilized to develop various types of machinery. Element? We can now see a movement toward production. Especially the heat resistance and wear resistance of ceramics? It is conceivable to use this method to form the shaft support of a machine tool, etc., with two rotating shafts, etc., from ceramic, but the drawback of ceramic being its high hardness is that it has poor workability. For example, as shown in Fig. 1, the headstock of a precision machine tool 1v is formed of ceramic, a ceramic bearing ring 41 is fitted into the shaft support hole 3 of the shaft support 2, and the ceramic bearing ring 4 is (b) When the rotating shaft 5 is supported, since both the shaft support 2° shaft support ring 41 and the rotating shaft 5 are made of ceramic, it is extremely difficult to improve centering and coaxiality.
すなわち、セラミックはダイヤモンドを使用した研削、
研摩しか加工手段がなく、セラミックの工作機械への応
用技術が未開発であるため、加工機の問題、加工技術の
問題等幾多の難点がある。In other words, ceramics are ground using diamonds,
Because the only processing method available is polishing, and the technology for applying ceramics to machine tools has not yet been developed, there are many problems with processing machines and processing technology.
本発明はこれら問題点、難点を解消しセラミックを全面
的に使用しながら芯出し、同軸性を高めることのできる
工作機械等の軸承ｓｔ提供することを目的としているも
ので、その構成は、軸支部の軸支孔に回転軸を軸支した
工作機械等において、該軸支部と回転軸とをセラミック
で形成すると共に前記軸支孔には金属環ン介してセラミ
ックの軸受Ｒ”を嵌着し、該軸受環に回転軸を内嵌軸支
して成ることｔ特徴としている。The purpose of the present invention is to solve these problems and difficulties and provide a shaft bearing for machine tools, etc., which can improve centering and coaxiality while using ceramics throughout. In a machine tool or the like in which a rotating shaft is supported in a shaft support hole of a branch, the shaft support and the rotating shaft are made of ceramic, and a ceramic bearing R'' is fitted into the shaft support hole via a metal ring. , the rotary shaft is internally supported in the bearing ring.
上記構成により成る本発明によれば、セラミックの軸受
環Ｚ金属環ケ介してセラミックの軸支部の軸支孔に嵌着
したので、先す軸支孔に金属環を圧入嵌着して芯出し加
工？し、しかる後にその金属環に精度の高いセラミック
の軸受環を圧入ｉ着しＶ該軸受環にセラミックの回転軸
ケ内低軸支させるので、回転軸の両Ｑ＠部で支承する態
様のものにあって同心度を慄めて烏くすることができ、
かつセラミックのもつ精密度の高い主軸回転Ｙ保持させ
ることができる効果がある。前記金ｐＡ環は硬度の高い
もので薄いものを使用するときは熱による膨張変化ン少
なくすることができ、軸受に悪影響は生じないし超精密
芯出し加工ができる特長がある。According to the present invention having the above configuration, since the ceramic bearing ring Z is fitted into the shaft support hole of the ceramic shaft support via the metal ring, the metal ring is press-fitted into the shaft support hole first, and centering is performed. processing? Then, a high-precision ceramic bearing ring is press-fitted into the metal ring, and the bearing ring supports the ceramic rotating shaft at the lower part of the rotating shaft, so that it is supported by both Q@ parts of the rotating shaft. The concentricity can be frightened and distorted in the
Moreover, it has the effect of being able to maintain the spindle rotation Y with the high precision that ceramics have. When the gold pA ring has high hardness and is thin, the expansion change due to heat can be reduced, and there is no adverse effect on the bearing, and it has the advantage of allowing ultra-precision centering processing.
以下本発明の実施例１図面に基づいて説明する。第２図
以下本発明に係り、第２図は自動旋盤の正面図、第３図
は主軸台軸承Ｓの断面図。Embodiment 1 of the present invention will be described below based on the drawings. Fig. 2 and the following are related to the present invention, Fig. 2 is a front view of an automatic lathe, and Fig. 3 is a sectional view of a headstock bearing S.
第４図は第３図のＡ−Ａ＠面図である。FIG. 4 is an AA@ plane view of FIG. 3.
工作機械の中でも超精密機器用の旋＃ＩＩ６は主軸の軸
承部に精度ｖ髪求されるため、セラミックを用いた軸承
部が好ましい。図中旋盤６の主軸台７は囲壁部分をセラ
ミックで形成しである。Among machine tools, the spindle #II6, which is used for ultra-precision equipment, requires high accuracy in the bearing part of the main spindle, so it is preferable to use a bearing part made of ceramic. In the figure, the headstock 7 of the lathe 6 has a surrounding wall portion made of ceramic.
該主軸台７には通常金鵬製旋盤と同様に軸支部８．８が
主軸台７の軸方間両Ｖ＠都にあり、当然セラミックで形
成されている。The headstock 7 has shaft supports 8.8 on both sides of the headstock 7 in the same way as the Kinpo lathe, and are naturally made of ceramic.
軸支部８，８には軸支孔９，９がセラミック焼成前から
開孔しである。Pivot holes 9, 9 are opened in the shaft supports 8, 8 before ceramic firing.
該軸支孔９，９に、肉厚の薄い金属環ｉｏ、ｉ。The shaft support holes 9, 9 are provided with thin metal rings io, i.
ｖａ−人＠着して、そり内孔面に超精密芯出し加工を実
施する。しかる後、この金属環ｉｏ、ｉ。Attach the va-person and perform ultra-precision centering processing on the inner hole surface of the sled. After that, this metal ring io, i.
の内孔にセラミックで形成された軸受環１１゜１１ＹＰ
ｉ嵌させ、その内孔にセラミックで形成された回転軸１
２を内嵌軸支している。Bearing ring 11゜11YP made of ceramic in the inner hole of
A rotating shaft 1 made of ceramic is fitted into the inner hole of the rotary shaft 1.
2 is internally supported.
上記構成により成る本発明によれば、軸支部８の軸孔９
内に肉厚の薄い金属環１０，１０’Ｐ圧入嵌着したので
、この金属環１０，１０の内孔ン超精密芯出し加工ケす
ることによって、セラミックの軸受環１１，１１ｖこれ
に内嵌させて精度の高い同心度を得ることかヂきる効果
がある。According to the present invention having the above configuration, the shaft hole 9 of the shaft support 8
Since the thin metal rings 10, 10'P are press-fitted into the inside, the inner holes of the metal rings 10, 10 are machined with ultra-precision centering, and the ceramic bearing rings 11, 11v are fitted inside. This has the effect of obtaining highly accurate concentricity.
しかして、金Ｍ環１０，１０はセラミックより加工し一
？丁（、薄いもの馨使用すれば熱による膨張変化も少な
くて、主軸の回転精度に悲影峙を及はさない特長がある
。However, is the gold M ring 10, 10 processed from ceramic? If a thin material is used, there will be little expansion change due to heat, which has the advantage of not affecting the rotation accuracy of the main shaft.
本発明は前記構成に限定、されるものではない。The present invention is not limited to the above configuration.
主軸台を従来の金楓製とし、軸支部のみ適宜形状にセラ
ミックで形成できるのは当然である。Naturally, the headstock can be made of conventional gold maple, and only the shaft support can be made of ceramic in an appropriate shape.
また、前記軸支部の軸支孔内周面には金属塊の嵌合に通
する凹凸を形成することもできる。Furthermore, the inner circumferential surface of the shaft support hole of the shaft support may be formed with projections and recesses through which a metal lump can be fitted.
前記軸受環の内孔周面には螺旋状その他適宜油導溝ン形
成しておくことができる。それらの油導溝孔は、セラミ
ックの焼成前に形成しておくものである。A spiral or other suitable oil guide groove may be formed on the circumferential surface of the inner hole of the bearing ring. These oil guide grooves are formed before firing the ceramic.
上記のように本発明は軸承部がセラミックで構成され、
主軸の同心度も高精ｔｊＬｖｃすることができるため、
セラミックのもつ耐熱性、耐膨張性、耐摩耗性に丁ぐれ
た超精密旋盤等の工作機械その他装置ン提供することが
できる効果がある。As mentioned above, in the present invention, the bearing part is made of ceramic,
Since the concentricity of the main axis can also be adjusted to high precision tjLvc,
Ceramic has the advantage of being able to provide machine tools and other equipment such as ultra-precision lathes that have excellent heat resistance, expansion resistance, and wear resistance.
第１図は他のセラミック主軸台断面図、第２図以下本発
明に係り、第２図は旋盤の正面図、第３図は主軸台軸承
部の断面図、第４図は第３図におけるＡ −Ａ Ｉ！１
面図。
６・・・旋 盤 ７・・・セラミック製主軸台８・・・
軸支部 ９・・・軸支孔
１０・・・金ｍ塩 １１・・・セラミック製軸受環１２
・・・セラミック製回転軸
第１図
牙２図
牙４図Fig. 1 is a sectional view of another ceramic headstock, Fig. 2 and the following are related to the present invention, Fig. 2 is a front view of the lathe, Fig. 3 is a sectional view of the headstock bearing, and Fig. 4 is the same as that in Fig. 3. A-AI! 1
Surface diagram. 6...Lathe 7...Ceramic headstock 8...
Shaft support 9... Pivot support hole 10... Gold m salt 11... Ceramic bearing ring 12
・・・Ceramic rotating shaft Fig. 1 Fig. 2 Fig. 4 Fig. 4
Claims (1)
において、該軸支部と回転軸と？セラミックで形成する
と共に前記軸支孔には金属環を介してセラミックの軸受
環Ｖ嵌着し、該軸受環に（ロ）転軸ン内嵌軸支して成る
ことＶ％徴とする工作機械等の軸承部。 ２、 セラミックより成る軸支部の軸支孔に金属環を圧
入すると共に該金属環の内孔に芯出し加エン施し、該金
属環の内孔にセラミックの軸受環を嵌着させることケ特
徴とする軸承部の形成方法。[Scope of Claims] 1. In a machine tool or the like in which (b) a rotating shaft is supported in a shaft support hole of a shaft support, the shaft support and the rotating shaft may be connected to each other. A machine tool which is made of ceramic, has a ceramic bearing ring V fitted into the shaft support hole via a metal ring, and has a (b) rotary shaft internally supported in the bearing ring. etc. shaft bearings. 2. A metal ring is press-fitted into the shaft support hole of the shaft support made of ceramic, and the inner hole of the metal ring is centered and engraved, and the ceramic bearing ring is fitted into the inner hole of the metal ring. How to form a shaft bearing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3385884A JPS60179520A (en) | 1984-02-24 | 1984-02-24 | Bearing of machine tool and its forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3385884A JPS60179520A (en) | 1984-02-24 | 1984-02-24 | Bearing of machine tool and its forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60179520A true JPS60179520A (en) | 1985-09-13 |
| JPS6367050B2 JPS6367050B2 (en) | 1988-12-23 |
Family
ID=12398200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3385884A Granted JPS60179520A (en) | 1984-02-24 | 1984-02-24 | Bearing of machine tool and its forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60179520A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148102A (en) * | 1985-12-20 | 1987-07-02 | Toyoda Mach Works Ltd | Main spindle device |
| JPS62209222A (en) * | 1986-03-10 | 1987-09-14 | Eguro Tekkosho:Kk | Spindle and bearing structure for machine tool and the like |
| JPS6338715A (en) * | 1986-07-31 | 1988-02-19 | Kyocera Corp | Rotary bearing device |
-
1984
- 1984-02-24 JP JP3385884A patent/JPS60179520A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62148102A (en) * | 1985-12-20 | 1987-07-02 | Toyoda Mach Works Ltd | Main spindle device |
| JPS62209222A (en) * | 1986-03-10 | 1987-09-14 | Eguro Tekkosho:Kk | Spindle and bearing structure for machine tool and the like |
| JPS6338715A (en) * | 1986-07-31 | 1988-02-19 | Kyocera Corp | Rotary bearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6367050B2 (en) | 1988-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |