1306425 九、發明說明： 【發明所屬之技術領域】 特別是指一種具有内藏式 本發明是有關於一種主軸 馬達的主轴。 【先前技術】 近十幾年來，由於加工機為了加工易脆的脆性材料及 易變形的橡膠材料，將傳統的主轴改變成具有可高速旋轉1306425 IX. Description of the invention: [Technical field to which the invention pertains] In particular, it relates to a type having a built-in type. The present invention relates to a spindle of a spindle motor. [Prior Art] In the past ten years, the processing machine has changed the conventional spindle to have a high-speed rotation in order to process fragile brittle materials and easily deformable rubber materials.
的主軸’利用該主軸可高速旋轉的特性使得加工刀具對脆 性材料或橡膠材料進行高速切削，解決了傳統主軸不易加 工上述材料的問題。 種現有的内藏式馬達主軸，包含有一 爹閲圖 11、-貫通該殼體11的心軸12、一連接於該心軸12 一端 4 121的刀具座13 一連接於該心軸12另—端部122的定 位件【4、一組設置於該殼體„内部的定子15、一組設置於 該心軸12並_應於該定子15的轉子16，及—設置於該 心軸12 一外周圍123的軸承單a 17。其中，該軸承單元 Π包括-鄰近於該刀具座13的第—軸承群i7i，及一鄰近 該定位塊14的第二軸承群ι72。 當該主轴經長時間的操作而產生故障之後，因為該主 轴大部份的零組件皆是被封閉於該殼體U内，如此一體化 設計，在維修上’不論是該主軸内部任何一處的故障，都 需要將整支主鱗卸下來並更換—支新絲，而無法在操 ^見場維修，·例如，該軸承單元17的第—軸承群π、或 第一軸承群172的磨損，一樣需要在現場整支拆卸、更換 1306425 時校H 以連接於—機台 裝與連社的=置精度，將會因新主轴與該機台之間的新組 度ί=誤差，维修者為確保該主抽的位置精 佟蚌門祕i *如此，使得該機台的維 :時間增長’而造成停機時生產料的增加。 【發明内容】 因此，本發明之目的， 修的主軸 卩在&供射騎段抽換維 於是，本發明内藏式馬達主轴，適用於一 包含一殼體單元、一刀座單亓、〜〇 尾早兀、一定位單元，及一聯結單 疋，該殼體單元包括一中心轴線；該刀座單元包括-沿該 軸線延伸並設置於該殼體單元中的第一心轴，及一連接於 該第-心軸-端部的刀具夾頭，其中，該第一心軸具有； 相反於該刀具夾頭的第一端部；該定位單元包括一沿該軸 線延伸並設置於該殼體單元中的第二心軸，及一介於該第 二心軸與加工機之間的轉接頭’其中，該第二心軸且有二 相反於該轉接頭的第二端部’而該第二端部具有一沿該轴 線方向上與該第-端部相互疊合的長度；該聯結單元包括 一設置於該第一端部的第——^人加 扪笫卡合部、一設置於該第二端部 的第二卡合部、一沿該殼體一徑向上介於該第一端部血第 二端部之間的襯套件，及多數設置於該襯套件的滚動件， 其中，該第-卡合部是可拆卸地卡合於第二卡合部。 1306425 本發明之功效在於該第一+合部與第二卡合部是可拆 卸地卡合，如此，在運轉時，該刀座單元的第-心軸能與 該定位單元的第二心轴-起轉動；而在維修時，該刀座單 元的第一心軸能與該定位單元的第二心軸分離，使得該刀 座單元與定位單元能相對於該殼體單元分段抽換並進行維 修，確實能達到本發明之目的。 【實施方式】 _ 有關本發明之則述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 參閱圖2’說明本發明内藏式馬達主軸2,適用於一可 供應驅動要件的加工機（圖未示），而驅動要件例如：電力、 冷卻液、壓縮空氣等；本發明内藏式馬達主軸2包含一殼 體單元21、一刀座單元3、一定位單元4、一軸承單元5、 一馬達單元6、一聯結單元7、一液冷單元8(如圖5所示）， _ 及一氣冷单元9(如圖6所示）。 該殼體單元21包括一沿一中心軸線L延伸的圓柱形殼 體周壁211 ’及一設置於該殼體周壁211並鄰近該刀座單元 3的法蘭212 ;在本實施例中，使用多數螺絲（圖未示）穿過 該法蘭212將該殼體單元21固定於該加工機上。 該刀座單元3包括一沿該軸線L延伸並設置於該殼體 周壁211内的第一心轴31，一圍繞該第一心軸31的刀座内 壁32、一介於該殼體周壁211與刀座内壁32之間的刀座周 壁33，及一連接於該第一心轴31的刀具夾頭34;其中， 1306425 該第一心轴31且古一 ^|? 'ti 及一相反”刀’1 刀具夾頭34的刀具端部31卜 ，該刀座周壁33是使用多數2 W312,在本實施例中 夕數螺4鎖（圖未示）固於該法蘭212 〇 周辟= : 4包括一沿該軸線L延伸並設置於該殼體 。土 、第—心軸4丨、一圍繞該第二心軸41的定位内 壁42、一設置於該定位内帶. 、 辟 一外壁面並連接於該殼體周 土 、疋立周壁43、-介於該第二心軸41與加工機的轉 接頭44,及—設置於該定位周壁^的編碼器仏其中， 該第二心轴41具有一鄰近該轉接頭44的轉接端部411，及 一相反於該轉接端部411的第二端部412;而該第二端部 412具有—沿該軸線L方向上與該第-端部M2相互疊合的 長度；在本實施例中’該第，412的内徑大於該第一 端部3丨2的外徑，換句話說，該第—端部312是穿設於該 第，端部4心，另外’該定位周壁们是使用多數螺絲（圖 未不）鎖固於該殼體周壁· 211。 該軸承單元5包括有-接觸該第―心轴31 —外壁面的 第一軸承群5卜及-設歸該第二心軸41 —外壁面的第二 軸承群52，其中’該第-軸承群51具有四組沿該軸線l方 向上分布於該刀座單元3 _第—轴承511，該第二轴承群 ”有一組沿該軸線L方向上分布於該定位單元4内的第 二軸承5 21。 該馬達單元6包括一環繞固設於該殼體周壁211内的定 子61，及一環繞固設於該第一心軸31外周壁313上並介於 1306425 該第一軸承群51與第一端部312之間的轉子62;當電力進 ^該定子61後，利用電磁效應可使得轉子62繞該轴線L 门速轉動，並帶動該第一心軸31、第二心軸41高速轉動。 配合參閱圖3、圖4，該聯結單元7包括—設置於該第 :端部312的第—卡合部71、一設置於該第二端部412的 ^卡合冑72、-沿該殼體周壁211 —徑向上介於該第一 端。P 312與第二端部412之間的襯套件73，及多數設置於 該襯套件73的滾動件74。其中，該第一卡合部71具有二The spindle's high-speed rotation makes the machining tool perform high-speed cutting of brittle materials or rubber materials, solving the problem that the conventional spindle is difficult to process the above materials. An existing built-in motor spindle includes a see-through FIG. 11, a mandrel 12 extending through the housing 11, and a tool holder 13 coupled to one end 4 121 of the mandrel 12, coupled to the mandrel 12. a positioning member of the end portion 122 [4], a set of stators 15 disposed inside the housing „, a set of rotors 16 disposed on the spindle 12 and acting on the stator 15 , and disposed on the spindle 12 The bearing unit 1772 of the outer circumference 123. The bearing unit Π includes a first bearing group i7i adjacent to the tool holder 13, and a second bearing group ι72 adjacent to the positioning block 14. After the failure of the operation, since most of the components of the main shaft are enclosed in the casing U, the integrated design, in the maintenance, whether it is any failure inside the main shaft, it is necessary to The entire main scale is unloaded and replaced with a new wire, and cannot be repaired in the field. For example, the first bearing group π of the bearing unit 17 or the wear of the first bearing group 172 needs to be completed on site. When dismantling and replacing 1306425, the school H is connected to the machine and the company. Accuracy, due to the new group degree between the new spindle and the machine ί = error, the repairer to ensure that the main pumping position is fine, so that the dimension of the machine: time increases ' [Invention] Therefore, for the purpose of the present invention, the repaired spindle 抽 is in the & rying section, and the built-in motor spindle of the present invention is suitable for a housing comprising a unit, a holder, a tail, a positioning unit, and a coupling unit, the housing unit including a central axis; the holder unit including - extending along the axis and disposed in the housing unit a first mandrel, and a tool chuck coupled to the first mandrel-end, wherein the first mandrel has; opposite to the first end of the tool chuck; the positioning unit includes a a second mandrel extending along the axis and disposed in the housing unit, and a joint between the second mandrel and the processing machine, wherein the second mandrel has two opposite to the turn a second end of the joint and the second end has a direction along the axis The length of the first end portion overlapped with each other; the coupling unit includes a first-side twisting engagement portion disposed at the first end portion, and a second engaging portion disposed at the second end portion a bushing member radially between the second end portion of the first end portion of the casing, and a plurality of rolling members disposed on the bushing member, wherein the first engaging portion is detachable The ground is engaged with the second engaging portion. 1306425 The effect of the invention is that the first engaging portion and the second engaging portion are detachably engaged, such that, during operation, the first mandrel of the seat unit Rotating with the second mandrel of the positioning unit; and during maintenance, the first mandrel of the seat unit can be separated from the second mandrel of the positioning unit, so that the seat unit and the positioning unit can be opposite It is indeed possible to achieve the object of the present invention by replacing and repairing the housing unit in sections. [Embodiment] The detailed description of a preferred embodiment of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to FIG. 2', the built-in motor spindle 2 of the present invention is applicable to a processing machine (not shown) that can supply a driving component, such as electric power, coolant, compressed air, etc.; The main shaft 2 comprises a housing unit 21, a holder unit 3, a positioning unit 4, a bearing unit 5, a motor unit 6, a coupling unit 7, a liquid cooling unit 8 (shown in Fig. 5), and a gas Cold unit 9 (shown in Figure 6). The housing unit 21 includes a cylindrical housing peripheral wall 211 ' extending along a central axis L and a flange 212 disposed adjacent to the housing peripheral wall 211 and adjacent to the holder unit 3; in this embodiment, a majority is used. A screw (not shown) is passed through the flange 212 to secure the housing unit 21 to the processing machine. The holder unit 3 includes a first mandrel 31 extending along the axis L and disposed in the peripheral wall 211 of the housing, a seat inner wall 32 surrounding the first mandrel 31, and a peripheral wall 211 of the housing. a peripheral wall 33 of the seat between the inner wall 32 of the seat, and a tool holder 34 connected to the first mandrel 31; wherein, the first mandrel 31 and the first one of the main shaft 31 and the opposite one '1 The tool end portion 31 of the tool chuck 34 is a majority of 2 W312. In the present embodiment, the snail 4 lock (not shown) is fixed to the flange 212. 4 includes a casing extending along the axis L and disposed on the casing. The soil, the first mandrel 4丨, a positioning inner wall 42 surrounding the second mandrel 41, and a positioning inner belt are disposed on the outer wall. And connected to the casing surrounding soil, the peripheral wall 43, the second mandrel 41 and the adapter 44 of the processing machine, and the encoder 设置 disposed in the positioning peripheral wall, the second core The shaft 41 has a transition end 411 adjacent to the adapter 44 and a second end 412 opposite the transition end 411; and the second end 412 has - along the axis L a length overlapping the first end portion M2; in the present embodiment, the inner diameter of the first portion 412 is larger than the outer diameter of the first end portion 3丨2, in other words, the first end portion 312 It is worn on the first end, the center of the end 4, and the 'the positioning peripheral wall is locked to the peripheral wall 211 of the housing by using a plurality of screws (not shown). The bearing unit 5 includes - contacts the first - mandrel 31. The first bearing group 5 of the outer wall surface and the second bearing group 52 of the outer wall surface of the second mandrel 41, wherein the first bearing group 51 has four groups distributed along the axis l direction The holder unit 3_the first bearing 511 has a set of second bearings 521 distributed in the positioning unit 4 in the direction of the axis L. The motor unit 6 includes a stator 61 that is fixed around the peripheral wall 211 of the housing, and is circumferentially fixed on the outer peripheral wall 313 of the first spindle 31 and is located at 1306425. The first bearing group 51 and the first end The rotor 62 between the portions 312; after the electric power enters the stator 61, the electromagnetic effect can be used to rotate the rotor 62 about the axis L, and the first mandrel 31 and the second mandrel 41 are driven to rotate at a high speed. Referring to FIG. 3 and FIG. 4, the coupling unit 7 includes a first engaging portion 71 disposed at the first end portion 312, a locking portion 72 disposed at the second end portion 412, and along the shell. The peripheral wall 211 is radially adjacent to the first end. A bushing member 73 between the P 312 and the second end portion 412, and a plurality of rolling members 74 disposed on the bushing member 73. Wherein, the first engaging portion 71 has two
凸出於該第-端部312的卡塊711，而該第二卡合部72具 有一朝該第二端部412凹設的卡槽72卜該等卡塊711分別 可拆卸地卡合於料切72卜而且，沿柿線l方向上， 該等卡塊川與該等卡槽721之間存在有間隙75 ;換句話 說，在卡合之後，該等卡塊711與該等卡槽721在沿該轴線 L方向上仍可相對地移動。 上如此的設計，是為了該等心軸31、41在高速轉動下， 軸承單元5摩擦而造成溫度的上升，會改變該等心車 在該軸線L方向上的長度；而在沿該軸線L方向」 z等卡塊711與該等卡槽721之間存有間隙75，可讓該考 41因度變化而產生的長度變化，在該等滾動辦 74的導引下’使該等卡塊711與該等卡槽721沿該轴線^ 方向上相對靠近地移動，避免了該等心軸31、41的對揸; 相反地’在溫度下降的過程中，該等卡塊711與該等卡槽 721則會沿該軸線L方向上相對遠離地移動。 在本實施例中’該第-卡合部71是與第一心軸31 一 9 1306425 體成型的製成，所以第-卡合部71與第-心軸31的材質 相同並具有-第—材料彈性係數，而第二卡合部Μ則是由 具有-第二材料彈性係數的材質製成後再設置於第二心轴 ，如此’利用該第一、第二卡合部71、72的材質分別具 有不同的彈性係數，可使該等卡塊川與該等卡槽川在卡 合，，更容易緊密卡合，且仍可供維修者拆仰維修。另外 ’母-滾動件74各是一顆可朝任意方向轉動並實質上半徑 相同的鋼珠。 值得一提的是，關於該第-、第二卡合部71、72的凹 凸配合’也可以是該第-卡合部71具有朝該第一端部M2 凹設的二卡槽，該第二卡合部72具有二凸出於該第二端部 412的卡塊。 參閱圖5,該液冷單元8包括一入液口 81、一環繞該 刀座周壁33並由該刀座周壁33與殼體周壁2ιι配合界定出 的刀座液冷槽道82、-環繞該定子61一外周壁6ιι並由該 定子外周壁611與殼體周壁211配合界定出的定子液冷 槽道83、-出液口 84，及_依序串連該入液口 81、刀座液 冷槽道82、定子液冷槽道83、出液口 84的液冷流道85; 利用冷部液在上述槽道82、83之間的流動，帶走該第一、 第二心軸31、41高速轉動時，與該軸承單元5各軸承5ιι 、521之間摩擦產生的熱量，用於降低整個主軸2的溫度。 參閱圖6 ’該氣冷單元9包括-在該刀座單元3中流動 的刀座風冷官S 91 ’及-在該定位單元4中流動的定位氣 冷管路92，·其中，該刀座氣冷管路91具有一入氣口川、 10 1306425 一環繞該刀座内壁32並由該刀座内壁32與刀座周壁33配 合界定出的刀座氣冷槽道912、一排氣口 913,及一依序串 連s亥入氣口 911、刀座氣冷槽道912、及排氣口 913的刀座 氣冷流道914;而該定位氣冷管路92具有一入氣口 921、 一環繞該定位内壁42並由該定位内壁42與定位周壁43配 合界定出的定位氣冷槽道922、一排氣口 923，及一依序串 連該入氣口 921、定位氣冷槽道922、及排氣口 923的定位 氣冷流道924。 本發明的設計是導引壓縮空氣直接流入到環繞上述内 壁32、42的該等氣冷槽道912、922，以最靠近該第一、第 一心軸31、41及各軸承511、521的距離來帶走摩擦產生的 熱置’達成有效率的冷卻效果。 參閱圖4'圖7,當本發明内藏式馬達主軸2故障需要 更換維修時，維修者先進行故障點診斷，確認該故障點是 位在該刀座單元3或者定位單元4，如故障點是發生在該刀 座單元3或者固设於該刀座單元3上的零組件時，維修者 百先將該刀座周壁33鎖固於該法蘭212的多數螺絲（圖未示 )/斥卸，再沿該軸線L方向施力於該刀座單元3用以抽離， 等到該第一卡合部71卡塊711與第二卡合部72卡槽721沿 k軸線L方向分離之後，該刀座單元3便可從該殼體單元 抽出稍後，維修者再將新的刀座單元3插入該殼體 單疋21中並沿該軸線L方向施力，待該第一卡合部π卡 魏711與第二卡合部72卡槽721沿該軸線l方向卡合之後 ’再使用多數螺絲將新的刀座單元3鎖固於該法蘭212，如 .1306425 此’即完成分段抽換維修的動作。 —另。外，如故障點是發生在料位單元4或者固設於該 單兀4上的零組件時，其分段抽換維修的動作，除了 需要對該轉接頭44、電力、壓縮空氣等與該加工機之間的 脫離與再連接進行額外的動作，其它皆與上述發生於刀座 單元3的狀況相同。 值4-提的是，由於本發明的聯結單元7襯套件73上 « 設置有實質上半徑相同的多數滾動件74,可對第一端部 312及第二端部412提供良好的同心定位；如此，維修者對 其中一個單元分段抽換維修之後，可利用未抽換維修並保 有原有位置精度的另-個單元’及料滾動件74在卡合時 可提供良好的同心定位，達到組裝後不必再進行位置精度 校正的優點。 卸納上述，本發明内藏式馬達主軸2利用分別設置於 第一、第二心軸31、41的第一、第二卡合部71、72,達咸 • 分段抽換維修，節省維修成本的目的，另外在該襯套件73 與該等滾動件74的導引下，抽換維修後的單元不必再進行 位置精度的校正，確實能達到本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋現有一種内滅式馬達主轴的·一組合示意圖； 12 1306425 圖2是-組合示意圖，說明本發明内藏式馬達 ~較佳實施例； 的 圖3是-局部放大的剖視示意圖，說明該較佳實 的—聯結單元； ' 元； 圖4是一立體分解圖，說明該較佳實施例的該 聯結單 液冷單 圖5是一組合示意圖，說明該較佳實施例的 元；a card slot 711 protruding from the first end portion 312, and the second engaging portion 72 has a card slot 72 recessed toward the second end portion 412. The card blocks 711 are respectively detachably engaged with the card block 711. And in the direction of the persimmon line l, there is a gap 75 between the card block and the card slots 721; in other words, after the snapping, the blocks 711 and the card slots The 721 is still relatively movable in the direction along the axis L. The above design is for the spindles 31, 41 to rotate under high speed, the bearing unit 5 friction causes a temperature rise, which changes the length of the car in the direction of the axis L; and along the axis L There is a gap 75 between the card 711 and the card slot 721, so that the length change caused by the change of the test 41 can be made under the guidance of the scrolling device 74. 711 moves relatively close to the card slots 721 in the direction of the axis ^, avoiding the confrontation of the mandrels 31, 41; conversely, during the temperature drop, the blocks 711 and the like The card slot 721 is moved relatively far apart in the direction of the axis L. In the present embodiment, the first engaging portion 71 is formed integrally with the first mandrel 31 - 9 1306425, so the first engaging portion 71 and the first mandrel 31 are made of the same material and have - a material elastic modulus, and the second engaging portion is made of a material having a second material elastic coefficient and then disposed on the second mandrel, such that the first and second engaging portions 71, 72 are utilized. The materials have different elastic coefficients, so that the card blocks can be engaged with the card slots, and it is easier to be tightly engaged, and can still be repaired by the repairer. Further, the mother-rolling members 74 are each a steel ball which is rotatable in any direction and has substantially the same radius. It is to be noted that the first and second engaging portions 71 and 72 may have a second engaging groove 71 that is recessed toward the first end portion M2. The two engaging portions 72 have two blocks projecting from the second end portion 412. Referring to FIG. 5, the liquid cooling unit 8 includes a liquid inlet 81, a knife-cooling channel 82 defined around the peripheral wall 33 of the holder and defined by the peripheral wall 33 of the holder and the peripheral wall 2 of the housing. a stator liquid cooling channel 83, a liquid outlet 84, and a stator outlet wall 81, which are defined by the outer peripheral wall of the stator 61 and the outer peripheral wall 611 of the stator, and the liquid inlet 81, and the liquid inlet 81 and the knife seat liquid are sequentially connected in series. The cold channel 82, the stator liquid cooling channel 83, and the liquid cooling channel 85 of the liquid outlet 84; the first and second mandrels 31 are carried away by the flow of the cold liquid between the channels 82, 83. When the 41 is rotated at a high speed, the heat generated by the friction between the bearings 5 and 521 of the bearing unit 5 is used to lower the temperature of the entire main shaft 2. Referring to Fig. 6 'the air cooling unit 9 includes - a seat air cooling officer S 91 ' flowing in the seat unit 3 and a positioning air cooling line 92 flowing in the positioning unit 4, wherein the knife The air-cooling pipe 91 has an air inlet port, 10 1306425, a seat air-cooling channel 912 defined by the inner wall 32 of the tool holder and defined by the inner wall 32 of the tool holder and the peripheral wall 33 of the seat, and an exhaust port 913. And a series of air inlet 911, a knife air cooling channel 912, and a gas passage 914 of the exhaust port 913; and the positioning air cooling pipe 92 has an air inlet 921, a a positioning air cooling channel 922, an exhaust port 923 defined by the positioning inner wall 42 and the positioning inner wall 42 and the positioning peripheral wall 43 are defined, and a gas inlet 921, a positioning air cooling channel 922, and a gas cooling port 922 are sequentially connected in series. And the air vent 924 is positioned at the exhaust port 923. The design of the present invention directs compressed air to flow directly into the air-cooling channels 912, 922 surrounding the inner walls 32, 42 to be closest to the first and first mandrels 31, 41 and the bearings 511, 521. The distance to take away the heat generated by the friction 'to achieve an efficient cooling effect. Referring to FIG. 4' FIG. 7, when the built-in motor spindle 2 of the present invention needs to be replaced and repaired, the repairer first performs a fault point diagnosis to confirm that the fault point is located in the tool holder unit 3 or the positioning unit 4, such as a fault point. When the tool holder unit 3 or the component fixed on the tool holder unit 3 is generated, the repairer first locks the plurality of screws (not shown) of the flange 212 to the flange 212. Unloading, and then applying force to the holder unit 3 in the direction of the axis L for pulling away, and after the first engaging portion 71 block 711 and the second engaging portion 72 of the locking groove 721 are separated in the k-axis L direction, The holder unit 3 can be withdrawn from the housing unit, and the repairer inserts the new holder unit 3 into the housing unit 21 and applies force in the direction of the axis L until the first engaging portion After the π card 711 and the second engaging portion 72 are engaged in the direction of the axis l, the new blade unit 3 is locked to the flange 212 by using a plurality of screws, such as .1306425. The paragraph is replaced by the maintenance action. -another. In addition, if the fault point is a component that occurs in the level unit 4 or the component fixed on the unit 4, the operation of the section is replaced, except that the adapter 44, electric power, compressed air, etc. are required. The detachment and reconnection between the processing machines perform additional operations, and the others are the same as those described above for the tool holder unit 3. The value 4 - the first end portion 312 and the second end portion 412 can provide good concentric positioning due to the fact that the plurality of rolling members 74 having substantially the same radius are provided on the bushing member 73 of the coupling unit 7 of the present invention; In this way, after the repairer replaces and repairs one of the units, the other unit that can be replaced and repaired and retains the original position accuracy and the material rolling member 74 can provide good concentric positioning when the card is engaged. The advantage of positional accuracy correction is no longer necessary after assembly. In the above, the built-in motor spindle 2 of the present invention utilizes the first and second engaging portions 71 and 72 respectively disposed on the first and second spindles 31, 41, and is repaired and repaired in sections to save maintenance. For the purpose of cost, in addition to the guiding of the bushing member 73 and the rolling elements 74, the unit after the replacement and repair is not necessary to correct the positional accuracy, and the object of the present invention can be achieved. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a combination of a conventional internal combustion motor spindle; 12 1306425 FIG. 2 is a combined schematic view illustrating a built-in motor of the present invention - a preferred embodiment; FIG. 4 is an exploded perspective view showing the coupled single-liquid cold single figure 5 of the preferred embodiment, which is a combined schematic diagram illustrating the comparison. The element of the preferred embodiment;
圖6疋一組合示意圖，說明該較佳實施例的—氣冷單 疋，及 圖7是一分解示意圖，說明該較佳實施例的—刀座單 元與定位單元，從_殼體單元内脫離後的狀態。 S ) 13 1306425 【主要元件符號說明】Figure 6 is a combined schematic view showing the air-cooled unit of the preferred embodiment, and Figure 7 is an exploded perspective view showing the holder unit and the positioning unit of the preferred embodiment, detached from the housing unit After the state. S ) 13 1306425 [Description of main component symbols]
2 ···· ......主軸 521 ··· •…第二軸承 21… ……殼體單元 6…… •…馬達單元 211 · ……殼體周壁 61…· …·定子 212 · ......法蘭 611… •…外周壁 3 ···· ……刀座單元 62··.·· •…轉子 31 ··· •.....第 心轴 7…… 聯結早元 311 · .......刀具端部 71 ••… …·第一卡合部 312 ……第一端部 711 ··· -----Μ鬼 32··· .......刀座内壁 72•… •…第二卡合部 33··· .......刀座周壁 721… -----^槽 34·" .......刀具夾頭 73，… •…襯套件 1 -----定位單元 74•.… •…滾動件 41… .......第二心轴 75·.··· …·間隙 411 …·…轉接端部 8…… —液冷單元 412 . .......第二端部 81 … .…入液口 42··· …·…定位内壁 82-··· •…刀座液冷槽道 43". .......定位周壁 83•…‘ …·定子液冷槽道 * » < ' ......轉接頭 84.-··· •…出液口 45… .......編碼器 85••… •…液冷流道 5 * * ......•轴承單元 9…… …·氣冷單元 51 ··· ……第一轴承群 91 ·.... •…刀座氣冷管路 511 · .......第一轴承 911… …·入氣口 52··· ......第二轴承群 912… •…刀座氣冷槽道 14 1306425 913 — · ••排氣口 922… —疋位氣冷槽道 914…… -·刀座氣冷流道 923… •…排氣口 92........ ••定位氣冷管路 924… •…定位氣冷流道 921 ***** 入氣口 L…… ----轴線 152 ···· ...... Spindle 521 ····...Second bearing 21.........Casing unit 6...•...Motor unit 211 ·...The casing peripheral wall 61...····the stator 212· ...Flange 611... •...External wall 3 ···· . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Early Element 311 · ....... Tool End 71 ••... First Engagement 312 ... First End 711 ··· -----Μ鬼32··· ... .... knife inner wall 72•... •...second engagement part 33··· ....... knife seat peripheral wall 721... -----^ slot 34·" ...... Tool chuck 73, ... • Bushing member 1 ----- Positioning unit 74•....• Rolling member 41..........Second mandrel 75·.·····Gap 411 ...·...transport end 8...-liquid cooling unit 412 . . . second end 81 ..... liquid inlet 42 ··· ....... positioning inner wall 82-··· •... Tool holder liquid cooling channel 43"............. positioning peripheral wall 83•...' ... stator liquid cooling channel* » < '...... adapter 84.-··· • ...liquid outlet 45... .......encoder 85••... •...liquid cooling runner 5 * * ......•bearing unit 9...··air cooling unit 51 ··· ......first bearing group 91 ·.... •...tool seat air cooling line 511 · .......the first bearing 911...the air inlet 52···...the second bearing group 912... •...the knife air cooling channel 14 1306425 913 — · •• Air port 922... - Clamp air cooling channel 914... - · Seat air cooling channel 923... •... Exhaust port 92........ • Position air cooling circuit 924... • Positioning Air-cooled runner 921 ***** Inlet port L... ----Axis 15