537941 A7 B7 五、發明説明（彳） 發明背景 1·發明領域 本發明有關一種用於支撐譬如光學連接器所用的 z r〇2套圈等圓柱形工件之定心裝置，並有關一種使用此 裝置之工具機，更特定言之，本發明係有關具有優良耐久 性並適於精確加工操作之定心裝置及工具機。 2 ·相關技藝的描述 光學連接器所用的Z r〇2套圏係具有2 . 5公厘或 1 · 25公厘的外徑，並具有0 _ 125公厘的孔徑。孔 及外表面需要以次微米的精確度彼此呈同心狀。 一般而言，爲了加工具有高同心度的圓柱形工件，一 種使用從兩側予以定心之加工操作係爲最佳方式。然而， 當加工由一種陶瓷基脆性材料所製造的一細微的工件（譬 如Z r〇2套圈）時，若採用一載體或類似物來旋轉工件， 需要包括逆向轉動工件及重新附接此載體等操作，在經加 工工件的外表面上產生一階級，利用如圖2所示之加工構 件作爲一種解決這些問題的加工方法。 在Z r 〇2套圈的製程中，在外表面加工之前先加工一 孔，故難以一孔晷基礎形成一中心孔，因此利用一預加工 的通孔來加工外表面，利用此方式確保了高的同心度。 特定言之，在如圖2所示加工一 Z r〇2套圈F的外表 面時，此套圈F放置於一主軸台單元的中心4與一尾座單 本紙張尺度適用中國國家標準（CNS ) A4規格（210X；297公釐） (請先閲讀背面之注意事項再填寫本頁) -裝· 訂 -4 - 537941 A7 B7 五、發明説明（2) 元的中心5之間，Z r〇2套圈F受到兩中心4及5所支撐 ，一通孔Η形成爲沿著套圈F的軸線之一光纖插孔，中心 4及5分別插入及接合於通孔Η的相對端點中，Z r〇2套 圈F從其相對端點表面側邊受到推動並在這兩個中心4及 5之間受到擠壓，利用此方式支撐Z r 0 2套圏F。當依此 方式支撐的此套圈F的外表面受到一硏磨輪3所硏磨，一 用於旋轉工件的輥1 8係抵靠住Z I*〇2套圏F的外表面。 同時，套圈F受到輥1 8的旋轉所轉動。 上述先前技藝使用兩中心4及5的支撐結構中，主軸 台單元的中心4受到固定，因此，在此固定中心4與旋轉 的Z r〇2套圈F中的通孔Η之間發生摩擦及磨損。特別是 ，固定中心4的側邊將容易磨損及變形成爲具有一階級， 且因爲中心4與套圈F的材料硬度差異並因爲通孔Η很薄 而呈現容易破裂的推拔形式，因此，中心4僅具有短的壽 命，利用此方式，設備的耐久性將產生問題。 上述磨損及變形所造成之中心4的推拔部係未必一直 與中心軸線呈同軸狀，而可能會偏離中心。若中心4受到 任何偏離的磨損，以硏磨輪3加工此套圈F外表面時， Z r〇2套圈F將硏磨成推拔狀而破壞Z r 0 2套圈F的圓 柱率（cylindncity)，此方式將損害套圈F的加工精確度。 因此，在習知技_使用兩中心4及5之支撐結構中，需要 以人工矯正由於上述中心4偏移磨損所造成之偏心，這並 不適於精確的加工。 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） . 批衣-- (請先閱讀背面之注意事項再填寫本頁) 、11 -5- 537941 A7 B7 五、發明説明（3) 發明槪論 本發明已試圖解決上述問題，本發明之一目的係提供 一種具有優良耐久性並適於實行精確加工之定心裝置以及 一種使用此定心裝置之工具機。 爲了達成上述目的，根據本發明之一定心裝置係支擦 一圓柱形工件並具有一對中心，此對中心分別插入及接合 於沿著圓柱形工件的軸線所形成之一通孔的相對端點中， 使得圓柱形工件從其相對端點表面的側邊受到推動並在中 心之間受到擠壓，此對中心係藉由非接觸型軸承構件予以 可旋轉式浮動支撐。 根據本發明之定心裝置係爲一種用於支撐一圓柱形工 件並具有一對中心之定心裝置，此對中心分別插入及接合 於沿著圓柱形工件的軸線所形成之一通孔的相對端點中， 工件從其相對端點表面的側邊受到推動並在中心之間受到 擠壓，通孔的一端點呈現一邊緣形狀，通孔的另一端點具 有類似字母R的形狀。此對中心中，插入通孔的一上述邊 緣狀端點內之中心係由一非接觸型軸承構件予以可旋轉式 浮動支撐，插入通孔的另一 R形端點內之中心係由具有低 摩擦係數的一固定中心譬如鑽石康佩斯（diamond compax) 所組成。 根據本發明的定心裝置所具有之一項特徵爲：上述軸 承構件爲多孔型空氣靜力軸承，其藉由從位於中心基底部 側邊上之多孔材料體的眾多微孔將高壓空氣供往中心而可 旋轉式浮動支撐住中心。 -6- (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 537941 A7 —_____^B7_____ 五、發明説明（4) (請先閲讀背面之注意事項再填寫本頁) 並且，根據本發明的定心裝置所具有之一項特徵爲： 上述非接觸型軸承構件爲磁性軸承，其以位於中心基底部 側邊上之電磁鐵的磁力可旋轉式浮動支撐住中心。 並且，根據本發明的定心裝置所具有之一項特徵爲： 受到可旋轉式支撐的中心係具有與圓柱形工件相接觸時防 止滑移所需要之表面摩擦係數。 此外，根據本發明的定心裝置所具有之一項特徵爲： 其配備有一馬達，藉以可旋轉式驅動受到可旋轉式支撐的 中心。 並且，根據本發明的定心裝置所具有之一項特徵爲： 其配備有一輥，藉以直接抵靠住圓柱形工件外表面而轉動 圓柱形工件。 根據本發明的一種工具機係爲一種用於加工圓柱形工 件的外表面之工具機，用於支撐上述圓柱形工件的定心裝 置係具有一對中心，此對中心分別插入及接合於沿著圓柱 形工件的軸線所形成之一通孔的相對端點中。圓柱形工件 從其相對端點表面的側邊受到推動並在中心之間受到擠壓 ，中心係藉由非接觸型軸承構件予以可旋轉式浮動支撐。537941 A7 B7 V. Description of the invention (i) Background of the invention 1. Field of the invention The present invention relates to a centering device for supporting a cylindrical workpiece such as a zr02 ferrule used for an optical connector, and to a device using the device. Machine tools, and more particularly, the present invention relates to centering devices and machine tools that have excellent durability and are suitable for precise machining operations. 2 · Description of related arts ZrO2 sleeves used in optical connectors have an outer diameter of 2.5 mm or 1.25 mm, and have an aperture of 0 _ 125 mm. The holes and the outer surface need to be concentric with each other with sub-micron accuracy. In general, in order to process cylindrical workpieces with high concentricity, a machining operation using centering from both sides is the best method. However, when processing a fine workpiece (such as a ZrO2 ferrule) made of a ceramic-based brittle material, if a carrier or the like is used to rotate the workpiece, it is necessary to include counter-rotating the workpiece and reattaching the carrier Such operations generate a class on the outer surface of the processed workpiece, and use the processing component shown in FIG. 2 as a processing method to solve these problems. In the manufacturing process of Z r 〇2 ferrule, a hole is processed before the outer surface is processed, so it is difficult to form a center hole with a hole and a foundation. Therefore, a pre-machined through hole is used to process the outer surface. Concentricity. In particular, when processing the outer surface of a Zr02 ferrule F as shown in FIG. 2, the ferrule F is placed at the center 4 of a spindle unit and a single paper size of the tailstock applies Chinese national standards ( CNS) A4 specification (210X; 297mm) (Please read the notes on the back before filling out this page)-Binding-4-537941 A7 B7 V. Description of the invention (2) Between the center 5 of the yuan, Z r 〇2 Ferrule F is supported by two centers 4 and 5. A through hole Η is formed as a fiber jack along the axis of ferrule F. Centers 4 and 5 are inserted and joined to the opposite ends of through hole Η, respectively. The Z r〇2 ferrule F is pushed from the side of the opposite end surface and squeezed between these two centers 4 and 5. In this way, the Z r 0 2 ferrule F is supported. When the outer surface of the ferrule F supported in this way is honed by a honing wheel 3, a roller 18 for rotating the workpiece is abutted against the outer surface of the Z I * 〇2 bushing F. At the same time, the ferrule F is rotated by the rotation of the roller 18. In the above-mentioned prior art using the support structure of the two centers 4 and 5, the center 4 of the headstock unit is fixed. Therefore, friction occurs between the fixed center 4 and the through hole Η in the rotating Z r〇2 ferrule F. abrasion. In particular, the sides of the fixed center 4 will be easily worn and deformed to have a class, and because the material hardness of the center 4 and the ferrule F are different, and because the through hole Η is thin, the push-out form is easily broken. Therefore, the center 4 only has a short life, with this method, the durability of the equipment will cause problems. The pushing part of the center 4 caused by the above-mentioned wear and deformation may not always be coaxial with the center axis, but may be off-center. If the center 4 is subjected to any deviating wear, when the outer surface of this ferrule F is machined with the honing wheel 3, the Z r〇2 ferrule F will be honing into a push shape, which will destroy the cylindrical ratio of the Z r 0 2 ferrule F (cylindncity ), This method will damage the machining accuracy of the ferrule F. Therefore, in the support structure using the two centers 4 and 5, it is necessary to manually correct the eccentricity caused by the offset wear of the center 4, which is not suitable for accurate processing. This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm). Approval-(Please read the precautions on the back before filling this page), 11 -5- 537941 A7 B7 V. Description of the invention (3 ) Invention The present invention has attempted to solve the above problems, and an object of the present invention is to provide a centering device having excellent durability and suitable for performing precise processing, and a machine tool using the centering device. In order to achieve the above object, the centering device according to the present invention supports a cylindrical workpiece and has a pair of centers that are respectively inserted and engaged in opposite ends of a through hole formed along the axis of the cylindrical workpiece. , So that the cylindrical workpiece is pushed from the side of the opposite end surface and squeezed between the centers, and the center is rotatably floating supported by a non-contact bearing member. The centering device according to the present invention is a centering device for supporting a cylindrical workpiece and having a pair of centers, which are respectively inserted and engaged at opposite ends of a through hole formed along the axis of the cylindrical workpiece. In the point, the workpiece is pushed from the side of its opposite end surface and squeezed between the centers. One end of the through hole presents an edge shape, and the other end of the through hole has a shape similar to the letter R. Among the pair of centers, the center inserted into one of the edge-shaped end points of the through hole is rotatably floating supported by a non-contact bearing member, and the center inserted into the other R-shaped end point of the through hole is provided with a low A fixed center of friction coefficient is formed by diamond compax, for example. A feature of the centering device according to the present invention is that the above-mentioned bearing member is a porous aerostatic bearing that supplies high-pressure air to a plurality of micropores from a porous material body located on the side of the bottom of the center base. The center is supported by a rotatable floating support. -6- (Please read the precautions on the back before filling this page) This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 537941 A7 —_____ ^ B7_____ 5. Description of the invention (4) (Please read first Note on the back side, please fill out this page again) And, a feature of the centering device according to the present invention is that the above-mentioned non-contact bearing member is a magnetic bearing, which uses the magnetic force of an electromagnet located on the side of the bottom of the center base A rotatable floating support supports the center. Furthermore, the centering device according to the present invention has a feature that the center supported by the rotatable support has a surface friction coefficient required to prevent slippage when it comes into contact with a cylindrical workpiece. In addition, a centering device according to the present invention has a feature that it is equipped with a motor by which a center rotatably supported is rotatably driven. Furthermore, the centering device according to the present invention has a feature that it is equipped with a roller to rotate the cylindrical workpiece directly against the outer surface of the cylindrical workpiece. A machine tool according to the present invention is a machine tool for processing an outer surface of a cylindrical workpiece. A centering device for supporting the cylindrical workpiece has a pair of centers, and the centers are respectively inserted and joined along The axis of the cylindrical workpiece is formed at the opposite end of a through hole. The cylindrical workpiece is pushed from the side of its opposite end surface and squeezed between the centers, which are rotatably floatingly supported by non-contact bearing members.
根據本發明的一種工具機係爲一種用於加工圓柱形工 件的外表面之工具機，用於支撐上述圓柱形工件的定心裝 置係具有一對中公，此對中心分別插入及接合於沿著圓柱 形工件的軸線所形成之一通孔的相對端點中。圓柱形工件 從其相對端點表面的側邊受到推動並在中心之間受到擠壓 ，通孔的一端點呈現一邊緣形狀，而另一端點呈現字母R 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 537941 Α7 Β7 五、發明説明（5) (請先閲讀背面之注意事項再填寫本頁) 的形狀。此對中心中，插入上述一邊緣狀端點內之中心係 由一非接觸型軸承構件予以可旋轉式浮動支撐’插入通孔 的另一 R形端點內之中心係由具有低摩擦係數的一固定中 心譬如鑽石康佩斯（diamond compax )所組成。 根據本發明的一種工具機所具有之一項特徵爲：上述 非接觸型軸承構件爲多孔型空氣靜力軸承，其藉由從位於 中心基底部側邊上之多孔材料體的眾多微孔將高壓空氣供 往中心而可旋轉式浮動支撐住中心。 並且，根據本發明的一種工具機所具有之一項特徵爲 :上述非接觸型軸承構件爲磁性軸承，其經設計藉由位於 中心基底部側邊上之電磁鐵的磁力可旋轉式浮動支撐住中 心。 此外，根據本發明的一種工具機所具有之一項特徵爲 :受到可旋轉式支撐的中心係具有與圓柱形工件相接觸時 防止滑移所需要之表面摩擦係數。 並且’根據本發明的一種工具機所具有之一項特徵爲 :此工具機配備有一馬達，藉以可旋轉式驅動受到可旋轉 式支撐的中心。 並且，根據本發明的一種工具機所具有之一項特徵爲 :此工具機配備有一輥，藉以直接抵靠住圓柱形工件外表 面而轉動圓柱形：ς件。 本發明中，中心受到非接觸型軸承構件所支撐，可藉 由此結構來降低支撐住中心的軸承部之磨耗阻力，使中心 得以平順地旋轉。因此，圓柱形工件及中心係同步旋轉。 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公董) ---- 537941 A7 __B7 五、發明説明（6) (請先閲讀背面之注意事項再填寫本頁} 特別是，在一種採用多孔型空氣靜力軸承作爲用於支 撐住中心的非接觸型軸承構件之結構中，此等中心所具有 的剛性係比使用孔口節流或自體節流的液體靜力軸承來支 撐中心之結構更高。 圖式簡單說明 圖1爲顯示本發明之一項實施例的剖視圖； 圖2顯示一種用於以習知技藝的定心裝置來支撐一圓 柱形工件之結構；及 圖3顯示圓柱形工件。 主要元件對照表 2 定心裝置 3 硏磨輪 4 中心 5 中心 6 心軸 今 7 心軸 -〇 1 8 非接觸式軸承構件 b t ί 9 非接觸式軸承構件 b r* 10 多孔型空氣靜力軸承 1 11 多孔型空氣靜力軸承 f 12 多孔材料體 iJ 13 圓盤 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 537941 A7 _ B7 五、發明説明（7) 1 4 車床尾座壓力調整機構 1 5 彈簧 1 6 馬達 1 7 在製錶規 W 圓柱形工件 U 1 車床尾座單元 F Z r〇2套圈 Η 通孔 (請先閲讀背面之注意事項再填寫本頁) -裝· 較佳實施例的描述 訂 下文參照圖1詳細描述根據本發明之一種定心裝置的 一項實施例以及使用此定心裝置之一種工具機的一項實施 例。A machine tool according to the present invention is a machine tool for processing an outer surface of a cylindrical workpiece. A centering device for supporting the cylindrical workpiece has a pair of center pins, and the pair of centers are respectively inserted and joined along the center. The axis of the cylindrical workpiece is formed at the opposite end of a through hole. The cylindrical workpiece is pushed from the side of its opposite end surface and squeezed between the centers. One end of the through hole presents an edge shape and the other end presents the letter R. The paper dimensions are applicable to Chinese national standards (CNS ) A4 size (210X 297 mm) 537941 Α7 Β7 V. Description of the invention (5) (Please read the precautions on the back before filling this page). Of this pair of centers, the center inserted into the above-mentioned one edge-shaped end point is rotatably floating supported by a non-contact bearing member. The center inserted into the other R-shaped end point of the through-hole is formed by a low-friction coefficient. A fixed center is made up of diamond compax, for example. A feature of a machine tool according to the present invention is that the above-mentioned non-contact bearing member is a porous aerostatic bearing, which uses a plurality of micro holes in a porous material body located on the side of the bottom of the center base to apply high pressure Air is supplied to the center and the center is supported by a rotatable floating support. In addition, a feature of a machine tool according to the present invention is that the non-contact bearing member is a magnetic bearing, which is designed to be rotatably floatingly supported by the magnetic force of an electromagnet located on the side of the bottom of the center base. center. In addition, a machine tool according to the present invention has a feature that the center supported by the rotatable support has a surface friction coefficient required to prevent slippage when it comes into contact with a cylindrical workpiece. And, a feature of a machine tool according to the present invention is that the machine tool is equipped with a motor by which a center rotatably supported is rotatably driven. In addition, a feature of a machine tool according to the present invention is that the machine tool is equipped with a roller to rotate the cylindrical member directly against the outer surface of the cylindrical workpiece. In the present invention, the center is supported by a non-contact bearing member, and by this structure, the abrasion resistance of the bearing portion supporting the center can be reduced, and the center can be smoothly rotated. Therefore, the cylindrical workpiece and the center rotate synchronously. This paper size applies to Chinese National Standard (CNS) A4 specification (210 × 297 public directors) ---- 537941 A7 __B7 V. Description of the invention (6) (Please read the precautions on the back before filling this page} In particular, Porous aerostatic bearings are used as structures to support the center of non-contact bearing members. The rigidity of these centers is more than that of liquid static bearings that use orifice throttling or self-throttling to support the center. The structure is higher. Brief description of the drawings: Fig. 1 is a cross-sectional view showing an embodiment of the present invention; Fig. 2 shows a structure for supporting a cylindrical workpiece with a centering device known in the art; and Fig. 3 shows a cylinder Shaped workpiece. Table of main components 2 Centering device 3 Honing wheel 4 Center 5 Center 6 Mandrel 7 Mandrel -〇1 8 Non-contact bearing member bt ί 9 Non-contact bearing member br * 10 Porous aerostatic Bearing 1 11 Porous aerostatic bearing f 12 Porous material body iJ 13 Disc The paper size is applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) 537941 A7 _ B7 V. Invention Ming (7) 1 4 Lathe tailstock pressure adjustment mechanism 1 5 Spring 1 6 Motor 1 7 Watchmaking gauge W Cylindrical workpiece U 1 Lathe tailstock unit FZ r〇2 Ferrule Η Through hole (Please read the note on the back first (Please fill in this page again)-description of the preferred embodiment. An embodiment of a centering device according to the present invention and an embodiment of a machine tool using the centering device will be described in detail below with reference to FIG. 1. .
-P 圖1所示之一種工具機係加工譬如z r 〇2套圈等一圓 柱形工件W，此工具機係處理圓柱形工件W的外表面，亦 即，此工具機以硏磨輪3硏磨圓柱形工件的外表面，同時 以一定心裝置2支撐工件W。 定心裝置2具有一對中心4、5，這些中心4、5的 配置亦使其前端點彼此相對。一中心4係可脫離式安裝至 一主軸台單元U 1的一心軸6的前端點，而另一中心5係 可脫離式安裝至7車床尾座單元U 2的一心軸7的前端點 。主軸台單元U 1的中心4及心軸6爲同軸式安裝。並且 ，車床尾座單元U 2的中心5及心軸7爲同軸式安裝。並 且，可藉由移動整個主軸台單元U 1或整個車床尾座單元 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐) 71 ' -- 537941 Α7 Β7 五、發明説明（9) 應至圓盤13的前與後表面。 (請先閱讀背面之注意事項再填寫本頁) 位於車床尾座單元U 2側邊上之多孔型空氣靜力軸承 1 1係具有在一徑向的固定位置中可旋轉式浮動支撐住中 心5之功能。相對於浮動支撐住中心之結構，多個多孔材 料體係配置於與心軸7外表面相對的位置中，並且以與位 於主軸台單元U 1的側邊上之多孔型空氣靜力軸承1 〇相 同的方式將高壓空氣從多孔材料體1 2的許多微孔供往心 軸7外表面。但不同於主軸台單元U 1側邊上之多孔型空 氣靜力軸承1 0，位於車床尾座單元U 2側邊上之此多孔 型空氣靜力軸承1 1並不具有確實將中心5放置在止推方 向的位置中之功能，因此，位於車床尾座單元U 2側邊上 之中心5可與心軸7 —起在止推方向中移動（亦即朝向此 中心的軸線）。 當圓柱形工件W爲一 Z r 〇2套圈F，若定心裝置2具 有上述構造，中心4及5係分別插入及接合於沿著Z I*〇2 套圈的軸線所形成之一通孔Η的相對端點內，此通孔Η作 爲光纖插孔。Ζ I*〇2套圈F從其相對端點表面側邊受到推 動並在兩中心4及5之間受到擠壓，藉由位於車床尾座單 元U 2側邊上之一車床尾座壓力調整機構1· 4來提供中心 4及5之此種推動與擠壓力量。 車床尾座壓方調整機構1 4的構造係從心軸後端以一 彈簧1 5的力量在止推方向推動位於車床尾座單元U 2側 邊上之心軸7。本實施例中，僅有位於車床尾座單元U 2 側邊上之心軸7可以單元狀在止推方向中移動，位於主軸 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -12- 537941 t ^cr % 't i t !J Ά A7 _ B7五、發明説明（^ 台單元ϋ 1側邊上之心軸6及中心4係放置於止推方向的 位置中並呈現靜態。因此，若車床尾座壓力調整機構1 4 運作時，位於車床尾座單元U 2側邊上之中心5將Z r〇2 套圈F以彈簧1 5的力量推抵住位於主軸台單元U 1側邊 上之中心4，Z r〇2套圈F係在此對中心4與5之間受到 推力所擠壓。 一馬達1 6係設置於主軸台單元U 1內，此馬達1 6 係爲一種直接可旋轉式驅動位於主軸台單元U 1側邊上的 中心4之構件，馬達安裝在中心4的基底側邊上（亦即心 軸6側邊上）。 接下來參照圖1描述藉由具有上述構造之工具機1來 加工Z r〇2套圈F外表面之一種操作。 當藉由圖1的工具機1來加工Z r〇2套圈F的外表面 時’ Z r 0 2套圈F以一工件進給機構（未圖示）設置於主 軸台單元U 1的中心4與車床尾座單元U 2的中心5之間 ，中心4及5分別插入沿著Z r〇2套圏的軸線所形成之一 通孔Η的相對端點內。特定言之，位於主軸台單元u 1側 邊上之中心4係插入位於主軸台單元U 1側邊上之中心4 的相對通孔Η的端點內，此孔係沿著Z r〇2套圈的軸線而 形成。位於車床尾座單元U 2側邊上之中心5係插入位於 車床尾座單元U公側邊上之中心5的相對通孔Η的端點內 ，通孔Η係沿著套圈的軸線而形成。 完成上述插入中心4及5之操作時，車床尾座壓力調 整機構1 4產生運作，因此，位於車床尾座單元U 2側邊 (請先閲讀背面之注意事項再填寫本頁) 裝· -Ρ. 本纸張尺度適用中國國家標準（CNS ) Α4規格（210X29*7公釐） -13- 537941 A7 B7 五、發明説明（ 上之中心5係以彈簧1 5的力量將Z r〇2套圈F推抵住位 於主軸台單元U 1側邊上之中心4，Z r〇2套圈F以推力 固持在此對中心4及5之間。 然後，馬達1 6產生運作，且位於主軸台單元U 1側 邊上之心軸6及中心4以單元狀旋轉，此時，亦經由位於 主軸台單元U 1側邊上之中心4與Z r〇2套圈F之間的接 觸且經由套圏F與位於車床尾座單元U 2側邊上之中心5 之間的接觸而將馬達1 6的旋轉力傳送至位於車床尾座單 元U 2側邊上之中心5。此對中心4、5及Z r〇2套圏F 係同步旋轉。 本工具機1中，硏磨輪3抵靠住如上述旋轉的Z I*〇2 套圈F的外表面，藉由硏磨輪3來加工Z r〇2套圈F的外 表面。同時以在製錶規（in-process gage) 1 7來量測套圏 F的尺寸，。 cr (請先閱讀背面之注意事項再填寫本頁) 若中心4、5與Z r〇2套圈F之間的接觸具有小的摩 擦係數，則因爲硏磨輪3產生的硏磨阻力或其他關係而在 中心4、5與Z r〇2套圈F之間發生滑移。若摩擦阻力夠 大且不發生滑移，此對中心4、5及Z r〇2套圈F亦將於 硏磨操作期間完全同步旋轉，因此，爲了確保此完全同步 的旋轉，可能採用具有大的表面摩擦係數之中心4及5。 如目前所述j在根據本實施例之工具機1中，中心4 及5均由非接觸型軸承構件8及9予以可旋轉式浮動支撐 。因此，用於支撐中心4及5之軸承部產生較少的磨耗損 失，故中心4及5得以平順地旋轉。特別是，若一種硬材 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -14- 537941 A7 B7 五、發明説明（d (請先閱讀背面之注意事項再填寫本頁) 料製成之圓柱形工件w (譬如Z r〇2套圏F )固持於此對 中心4與5之間並旋轉，圓柱形工件W及中心4、5亦同 步旋轉，這將消除中心4、5與圓柱形工件W之間的摩擦 與磨損，藉以延長中心4及5的壽命，因此提供優良的耐 久性。並且，可防止中心4及5的磨損；否則將損及加工 的精確度，譬如可防止破壞圓柱率，可具有穩定的加工精 確度，此外，不再需要一種用於矯正因爲中心4、5的偏 向磨損導致偏離中心之人工操作，這將適於實行精確的加 工。 並且，在根據本實施例之工具機1中，採用多孔型空 氣靜力軸承1 0及1 1作爲用於支撐住中心4及5之非接 觸型軸承構件8及9，並且此結構可讓中心4及5所具有 的剛性比起使用孔口節流或自體節流的液體靜力軸承來支 撐中心4及5之結構更高。因此，在工件旋轉的同時將固 持於此對中心4與5之間的圓柱形工件W外表面予以加工 之情形中，圓柱形工件W可精確地旋轉而不受到施加至圓 柱形工件W上的加工負載所影響，因此亦使得圓柱或類似 物具有穩定的加工精確度，此工具機適於實行精確的加工 〇 此外，在根據本實施例之工具機1中，以馬達1 6直 接可旋轉式驅動中心4而轉動圓柱形工件W。因此，可省 略作爲用於轉動此種圓柱形工件W且迄今用於轉動工件之 一輥單元。 在上述實施例的描述中，藉由定心裝置2來支撐具有 本紙張尺度適用中國國家榡準（CNS ) A4規格（210Χ297公釐） 537941 A7 __ B7 五、發明説明（^ 兩邊緣狀端點的通孔Η之圓柱形工件W。藉由此種定心裝 置2 ，可支撐具有如圖3所不形狀的一通孔之一圓柱形工 (請先閲讀背面之注意事項再填寫本頁) 件W。在圖示的圓柱形工件W中，通孔Η的一端點爲邊緣 形狀，通孔Η的另一端點爲類似字母R的形狀。在具有此 形狀的通孔Η之圓柱形工件W受到定心裝置2所支撐之情 形中，此對中心4與5中，因爲定心裝置2的結構，插入 通孔Η的一邊緣狀端點內之中心4係以與上述實施例相同 的方式而由非接觸型軸承構件8予以可旋轉式浮動支撐。 插入通孔Η的R形端點內之中心5係構成具有低摩擦係數 的一固定中心，譬如利用一種結合劑將細鑽石顆粒燒結而 成之鑽石康佩斯（diamond compax)。 在上述實施例中，多孔型空氣靜力軸承1 0及1 1作 爲非接觸型軸承構件8及9，譬如，可使用磁性軸承作爲 此種非接觸型軸承構件8、9。此情形中，將電磁鐵安裝 在中心4及5的基底部側邊（心軸6及7 )上並浮動支撐 住中心4及5以電磁鐵的磁力隨著心軸6及7旋轉，藉以 構成磁性軸承。 上述實施例中，藉由馬達1 6直接可旋轉式驅動位於 主軸台單元U 1側邊上之中心4來轉動圓柱形工件W。相 對於此種用於轉動圓柱形工件W之構件，譬如可採用習知 技藝的結構，亦即，如圖2所示，令用於轉動工件的輥 1 8直接抵靠住圓柱形工件W的外表面，並藉由輥1 8的 旋轉來轉動工件W。 上述實施例中，採用內建式馬達1 6作爲可旋轉式驅 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -16- 537941 A7 _ B7 _-P A machine tool shown in FIG. 1 processes a cylindrical workpiece W such as a zr 〇2 ferrule. This machine tool processes the outer surface of the cylindrical workpiece W, that is, the machine tool is honed with a honing wheel 3 The outer surface of the cylindrical workpiece, while supporting the workpiece W with the centering device 2. The centering device 2 has a pair of centers 4, 5 which are also arranged such that their front end points face each other. One center 4 series is detachably mounted to the front point of a spindle 6 of a headstock unit U1, while the other center 5 series is detachably mounted to the front point of a spindle 7 of a 7-bed lathe tailstock unit U2. The center 4 and the spindle 6 of the headstock unit U 1 are coaxially mounted. In addition, the center 5 and the spindle 7 of the lathe tailstock unit U 2 are coaxially mounted. In addition, by moving the entire headstock unit U 1 or the entire lathe tailstock unit, the paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 71 '-537941 Α7 Β7 V. Description of the invention (9) Go to the front and back surfaces of the disc 13. (Please read the precautions on the back before filling this page) Porous aerostatic bearing 1 on the side of the U 2 of the lathe tailstock unit 1 1 has a rotatable floating support center in a radial fixed position 5 Its function. With respect to the structure that supports the center floating, a plurality of porous material systems are arranged in positions opposite to the outer surface of the mandrel 7 and are the same as the porous aerostatic bearing 1 located on the side of the headstock unit U 1 The high-pressure air is supplied to the outer surface of the mandrel 7 from a number of micropores of the porous material body 12 in a manner. But unlike the porous aerostatic bearing 10 on the side of the headstock unit U 1, the porous aerostatic bearing 1 1 on the side of the lathe tailstock unit U 2 does not have the center 5 in place. The function of the position in the thrust direction, therefore, the center 5 located on the side of the lathe tailstock unit U 2 can move in the thrust direction (ie, the axis toward this center) together with the spindle 7. When the cylindrical workpiece W is a Z r 〇2 ferrule F, if the centering device 2 has the above structure, the centers 4 and 5 are respectively inserted and joined in a through hole formed along the axis of the ZI * 〇2 ferrule Η At the opposite end of the hole, this through hole Η acts as a fiber optic jack. Z I * 〇2 The ferrule F is pushed from its opposite end surface side and squeezed between the two centers 4 and 5, adjusted by a lathe tailstock pressure located on the side of the lathe tailstock unit U 2 Mechanism 1.4 provides this pushing and squeezing force for centers 4 and 5. The structure of the lathe tailstock pressure adjustment mechanism 14 pushes the mandrel 7 located on the side of the lathe tailstock unit U 2 in the thrust direction from the rear end of the mandrel with the force of a spring 15. In this embodiment, only the mandrel 7 located on the side of the tailstock unit U 2 of the lathe can be moved in the thrust direction in a unit shape. The paper size on the main shaft is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). ) -12- 537941 t ^ cr% 'tit! J Ά A7 _ B7 V. Description of the invention (^ 台 Unit ϋ 1 The mandrel 6 and the center 4 on the side are placed in the thrust direction and appear static. Therefore, if the lathe tailstock pressure adjustment mechanism 14 is in operation, the center 5 located on the side of the lathe tailstock unit U 2 pushes the Z r0 2 ferrule F against the spindle unit U 1 with the force of the spring 15. The center 4 on the side, Z r〇2 ferrule F is squeezed by the thrust between this pair of centers 4 and 5. A motor 16 is installed in the headstock unit U 1, and this motor 16 is A direct-rotatably driven member of the center 4 on the side of the headstock unit U 1 is mounted on the base side of the center 4 (that is, on the side of the mandrel 6). Next, referring to FIG. An operation for machining the outer surface of the Zr02 ferrule F with the machine tool 1 having the above structure. When using the machine tool 1 of FIG. Z r〇2 When the outer surface of the ferrule F 'Z r 0 2 The ferrule F is provided at the center 4 of the headstock unit U 1 and the center of the lathe tailstock unit U 2 by a workpiece feed mechanism (not shown). Between 5, the centers 4 and 5 are respectively inserted into the opposite ends of a through hole 沿着 formed along the axis of the Zr02 sleeve 圏. In particular, the center 4 on the side of the spindle unit u 1 is inserted Located at the end point of the through hole 中心 of the center 4 on the side of the headstock unit U1, this hole is formed along the axis of the Zr02 ferrule. The center is located on the side of the lathe tailstock unit U2 The 5 series is inserted into the end of the through hole Η located at the center 5 on the U side of the tailstock unit of the lathe. The through hole Η is formed along the axis of the ferrule. When the above operations of inserting the centers 4 and 5 are completed, The lathe tailstock pressure adjustment mechanism 14 is operated. Therefore, it is located on the U 2 side of the lathe tailstock unit (please read the precautions on the back before filling this page). ·· P. This paper size applies to Chinese national standards (CNS ) Α4 size (210X29 * 7mm) -13- 537941 A7 B7 V. Description of the invention (The upper center 5 is the force of the spring 1 5 The Z r〇2 ferrule F pushes against the center 4 located on the side of the headstock unit U 1 and the Z r〇2 ferrule F is held between the pair of centers 4 and 5 by thrust. Then, the motor 16 generates operation And the mandrel 6 and the center 4 located on the side of the headstock unit U 1 rotate in a unit shape, at this time, also between the center 4 and the Z r〇2 ferrule F located on the side of the headstock unit U 1 The rotary force of the motor 16 is transmitted to the center 5 on the side of the lathe tailstock unit U 2 via the contact between the sleeve 圏 F and the center 5 on the side of the lathe tailstock unit U 2. The pair of center 4, 5 and Zr02 sets of 圏 F system rotate synchronously. In this machine tool 1, the honing wheel 3 abuts against the outer surface of the Z I * 〇2 ferrule F rotated as described above, and the outer surface of the Zr〇2 ferrule F is processed by the honing wheel 3. At the same time, the in-process gage 1 7 was used to measure the size of the sleeve 圏 F. cr (Please read the precautions on the back before filling this page) If the contact between the center 4, 5 and Z r〇2 ferrule F has a small coefficient of friction, it is because of the honing resistance or other relationship caused by the honing wheel 3 On the other hand, slippage occurs between the centers 4, 5 and the Zr02 ferrule F. If the frictional resistance is large enough and no slip occurs, the pair of center 4, 5 and Z r0 2 ferrules F will also rotate completely synchronously during the honing operation. Therefore, to ensure this fully synchronized rotation, The surface friction coefficient of the centers 4 and 5. As described so far, in the machine tool 1 according to this embodiment, the centers 4 and 5 are rotatably floatingly supported by non-contact bearing members 8 and 9. Therefore, the bearing portions for supporting the centers 4 and 5 cause less wear and tear, so the centers 4 and 5 can rotate smoothly. In particular, if the paper size of a hard material applies to the Chinese National Standard (CNS) A4 (210X297 mm) -14- 537941 A7 B7 V. Description of the invention (d (Please read the precautions on the back before filling this page) The finished cylindrical workpiece w (such as Z r0 2 sleeve 圏 F) is held between the pair of centers 4 and 5 and rotates. The cylindrical workpiece W and the centers 4 and 5 also rotate synchronously, which will eliminate the centers 4 and 5 Friction and abrasion with the cylindrical workpiece W extend the life of the centers 4 and 5, thus providing excellent durability. Moreover, the wear of the centers 4 and 5 can be prevented; otherwise the accuracy of the processing will be impaired, such as Preventing damage to the cylindrical rate can have stable machining accuracy. In addition, a manual operation for correcting off-center due to the deviating wear of the centers 4, 5 is no longer needed, which will be suitable for accurate machining. In the machine tool 1 of this embodiment, porous aerostatic bearings 10 and 11 are used as non-contact bearing members 8 and 9 for supporting the centers 4 and 5, and this structure allows the centers 4 and 5 to Has stiffness compared to use Orifice-throttled or self-throttled hydrostatic bearings support the center 4 and 5. The structure is higher. Therefore, while the workpiece rotates, the cylindrical workpiece W between the centers 4 and 5 will be held on the outer surface of the cylindrical workpiece W. In the case of machining, the cylindrical workpiece W can be accurately rotated without being affected by the processing load applied to the cylindrical workpiece W, and therefore, the cylindrical or the like has a stable machining accuracy. This machine tool is suitable for performing precision In addition, in the machine tool 1 according to the present embodiment, the cylindrical workpiece W is rotated by the motor 16 directly rotatably driving the center 4. Therefore, it is possible to omit the cylindrical workpiece W for rotating such a cylindrical workpiece W and hitherto One roller unit used to rotate the workpiece. In the description of the above embodiment, the centering device 2 is used to support the paper size applicable to the Chinese National Standard (CNS) A4 specification (210 × 297 mm) 537941 A7 __ B7 V. DESCRIPTION OF THE INVENTION (^ A cylindrical workpiece W with a through hole 两 with two edge-like end points. With this centering device 2, a cylindrical tool with a through hole not shaped as shown in Figure 3 can be supported (please read the back first Note again on this page) Piece W. In the illustrated cylindrical workpiece W, one end of the through hole Η is an edge shape, and the other end of the through hole Η is a shape similar to the letter R. In the case where the cylindrical workpiece W of the hole 受到 is supported by the centering device 2, the pair of centers 4 and 5, because of the structure of the centering device 2, the center 4 inserted into an edge-shaped end of the through hole 以In the same manner as the above embodiment, the non-contact bearing member 8 is rotatably and floatingly supported. The center 5 inserted into the R-shaped end of the through hole Η constitutes a fixed center with a low coefficient of friction, such as by using a combination Diamond compax made by sintering fine diamond particles. In the above embodiment, the porous aerostatic bearings 10 and 11 are used as the non-contact type bearing members 8 and 9, and, for example, a magnetic bearing can be used as such non-contact type bearing members 8 and 9. In this case, the electromagnet is installed on the base side (mandrels 6 and 7) of the centers 4 and 5 and floatingly supports the centers 4 and 5. The magnetic force of the electromagnet rotates with the mandrels 6 and 7 to constitute Magnetic bearings. In the above-mentioned embodiment, the cylindrical work W is rotated by directly rotating the center 4 located on the side of the headstock unit U 1 by the motor 16. With respect to such a member for rotating the cylindrical workpiece W, for example, a structure having a conventional technique can be adopted, that is, as shown in FIG. 2, the roller 18 for rotating the workpiece is directly abutted against the cylindrical workpiece W. The outer surface rotates the workpiece W by the rotation of the roller 18. In the above embodiment, the built-in motor 16 is used as the rotatable drive. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -16- 537941 A7 _ B7 _
五、發明説明（U 動中心之構件。相對於可旋轉式驅動中心之此種構件’亦 可採用一種空氣渦輪機型的可旋轉式驅動構件。 (請先閱讀背面之注意事項再填寫本頁) 本發明中，一對中心係由上述非接觸型軸承構件予以 可旋轉式浮動支撐，因此，支撐住中心之軸承部係產生較 少的磨耗損失，故中心能夠平順地旋轉，圓柱形工件及中 心係同步旋轉。結果，在中心與圓柱形工件之間不發生摩 擦或磨損，這將延長中心的壽命，藉以提供一種具有優良 耐久性之定心裝置以及使用此定心裝置之一種工具機。並 可進一步避免中心磨損對於加工精確度之不利影響，可具 有穩定的加工精確度（譬如圓柱率）。此外，不再需要以 人工操作來矯正因爲中心的偏向磨損所導致的偏離中心， 這將適於實行精確的加工。 特別是，在一種採用多孔型空氣靜力軸承作爲支撐住 中心的非接觸型軸承構件之結構中，此等中心所具有的剛 性係比使用孔口節流或自體節流的液體靜力軸承來支撐中 心之結構更高。在固持於一對中心之間的圓柱形工件旋轉 的同時加工一圓柱形工件W的外表面之情形中，圓柱形工 ^ 件可精確地旋轉而與施加在圓柱形工件上的加工負載無關 ，因此亦可具有穩定的加工精確度（譬如圓柱率），這將 t 適於實行精確的加工。 本紙張尺度適用中國國家標準（CNS ) A4規格（2!0X297公慶） -17-V. Description of the invention (a component of the U moving center. Compared with such a component of the rotatable driving center, an air turbine type of rotatable driving member can also be used. (Please read the precautions on the back before filling this page) In the present invention, a pair of centers are rotatably and floatingly supported by the above-mentioned non-contact bearing member. Therefore, the bearing portion supporting the center generates less wear and tear, so the center can rotate smoothly. The cylindrical workpiece and the center The system rotates synchronously. As a result, no friction or wear occurs between the center and the cylindrical workpiece, which will prolong the life of the center, thereby providing a centering device with excellent durability and a machine tool using the centering device. It can further avoid the adverse effect of center wear on machining accuracy, and can have stable machining accuracy (such as cylindrical rate). In addition, manual operation is no longer needed to correct the off-center caused by the deviating wear of the center, which will be suitable In order to carry out precise machining, in particular, a porous aerostatic bearing is used as a support In the structure of non-contact bearing members of the core, the rigidity of these centers is higher than the structure that supports the centers by using orifice static or self-throttling hydrostatic bearings. It is fixed in a pair of centers. In the case where an outer surface of a cylindrical workpiece W is processed while rotating a cylindrical workpiece between the cylindrical workpieces, the cylindrical workpiece can be accurately rotated regardless of the processing load applied to the cylindrical workpiece, and therefore, it can also have stable processing. Accuracy (such as cylindrical rate), which will be suitable for precise processing. This paper size applies the Chinese National Standard (CNS) A4 specification (2! 0X297 public celebration) -17-