200916239 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種主軸（Spindle)裝置，更詳而言之係關 於一種具備有將切削液及壓縮空氣等之流體供給至形成於 旋轉軸之複數個流體供給路之迴轉接頭之主轴裝置。 【先前技術】 習知在支撐工作機械本體之工具主軸之主軸裝置中，已 知有隨著工具主軸之高速旋轉，而從主軸内將流體供給至 軸承内環之滾道下潤滑（under_race)方式（例如參照專利文 獻1)。在專利文獻i所記載之主軸裝置2〇〇中，如圖1〇所 不’旋轉軸101係藉由複數個軸承2〇3(2〇3a、 2〇3C、203D)相對於殼體202轉動自如地支撐。在旋轉軸 中係、於其前端部設有用以安裝工具支承座（h〇lder)2〇4 之錐（taper)孔201a，再者，於軸心形成有與錐孔π。連通 之軸方向孔2〇1b。在此軸方向孔2〇lb係收容有用以裝卸工 具支承座204之拉桿（draw bar)205。 在拉桿205係於拉桿205之軸方向形成有一端在錐孔_ 開口之大氣供給孔206。此外，在旋轉軸加係於軸方向及 半徑方向形成有一端朝向軸承203(2〇3A、2〇3b n 203D)開口之潤滑油供給用孔2〇7。 丹考’伙％轉軸2〇1之 相反錐孔側之端部供給壓縮空氣及 礼及潤滑油，並經由大氣供BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle device, and more particularly to a fluid having a cutting fluid, a compressed air, or the like, which is supplied to a rotating shaft. A spindle device of a plurality of rotary joints of a fluid supply path. [Prior Art] It is known that in the spindle device for supporting the tool spindle of the machine body, there is known an under-race lubrication method in which the fluid is supplied from the spindle to the inner ring of the bearing as the spindle of the tool rotates at a high speed. (For example, refer to Patent Document 1). In the spindle device 2A described in Patent Document i, as shown in FIG. 1A, the rotary shaft 101 is rotated relative to the housing 202 by a plurality of bearings 2〇3 (2〇3a, 2〇3C, 203D). Free to support. In the rotating shaft, a taper hole 201a for attaching a tool holder 2〇4 is provided at a front end portion thereof, and a taper hole π is formed in the shaft center. Connect the shaft direction hole 2〇1b. The shaft direction hole 2〇 lb accommodates a draw bar 205 for attaching and detaching the tool holder 204. An air supply hole 206 whose one end is at the opening of the taper hole is formed in the axial direction of the tie rod 205. Further, a lubricating oil supply hole 2〇7 whose one end opens toward the bearing 203 (2〇3A, 2〇3b n 203D) is formed in the axial direction and the radial direction. Dan Kao's %% shaft 2〇1 is supplied to the end of the opposite cone side to supply compressed air, ritual and lubricating oil, and is supplied via the atmosphere.
給孔206及潤滑油供給用孔2〇7分别蓝R 刀別將壓縮空氣及潤滑油供 給至錐孔20 la及軸承203。 此外，以其他主軸裝置而言 已有提出一種為了確認工 129465.doc 200916239 主軸之錐孔與工具支承座之錐部之密著而從主軸内供給 流體之方案（例如參照專利文獻2)。在專利文獻2所記載之 主軸裝置300中’係如圖u所示，在旋轉軸训形成流路 、303，並且使管⑻㈧”⑽插通於通過拉桿之軸心 =形成於抽方向之流路奶以形成2重結構之流路，並經由 机路302、305而將冷卻用冷卻劑（c〇〇lam)供給至未圓示之 工具，及經由流路303及管3〇6而供給錐孔3〇ia與未圖示之 工具支承座之密著確認用大氣。 此外如圖12放大所示，包括連接於旋轉軸3〇1之後端 部之迴轉接頭311。迴轉接頭311係包括：具有冷卻劑供給 口 314及密著確認用大氣供給口 315之殼體313、及藉由轉 動軸承316而可轉動自如地支撐於殼體313内之旋轉部 317° 在旋轉4 3 17係於轴方向形成有與冷卻劑供給口 3工4連通 之冷部劑用通路318、及與密著確認用大氣供給口 315連通 之大氣用通路3 19。旋轉部3 1 7之前端部係藉由螺栓 (bolt)320而固定於旋轉軸312之後端部。藉此，旋轉部η? 之冷郃劑用通路318及大氣用通路319即分別與設於旋轉軸 312之軸方向孔32丨及322連通，而從冷卻劑供給口 Μ*所供 給之冷部劑即經由軸方向孔32丨而供給至工具，而從密著 # 6忍用大氣供給口 3丨5所供給之密著確認用大氣即經由軸 方向孔322而供給至旋轉軸3〇丨之錐孔。 [專利文獻1]曰本特開平6_2〇61〇3號公報 [專利文獻2]日本特開平10-225845號公報 129465.doc 200916239 【發明内容】 發明所欲解決之問題 然而，在專利文獻1及專利文獻2所記載之主軸裝置 200、300中，均於旋轉軸201、3〇1及拉桿2〇5、3〇4 ,在軸The supply hole 206 and the lubricating oil supply hole 2〇7 respectively supply the compressed air and the lubricating oil to the tapered hole 20 la and the bearing 203. Further, in other spindle devices, there has been proposed a method of supplying a fluid from the spindle to confirm the adhesion between the tapered hole of the spindle and the tapered portion of the tool support (see, for example, Patent Document 2). In the spindle device 300 described in Patent Document 2, as shown in Fig. u, a flow path, 303 is formed in the rotation axis, and the tube (8) (8)" (10) is inserted through the axis of the rod through the shaft = the flow in the pumping direction The road milk is formed into a flow path of a double structure, and the cooling coolant (c〇〇lam) is supplied to the unillustrated tool via the machine paths 302 and 305, and is supplied through the flow path 303 and the pipe 3〇6. The tapered hole 3〇ia and the tool support seat (not shown) are used to confirm the atmosphere. Further, as shown in Fig. 12, the rotary joint 311 is connected to the end portion of the rotating shaft 3〇1. The swivel joint 311 includes: The casing 313 having the coolant supply port 314 and the adhesion confirmation air supply port 315 and the rotating portion 317 rotatably supported in the casing 313 by the rotation bearing 316 are attached to the shaft at the rotation 4 3 17 In the direction, a cold agent passage 318 that communicates with the coolant supply port 3 and an air passage 319 that communicates with the adhesion confirmation air supply port 315 are formed. The front end of the rotating portion 3 17 is by a bolt. (bolt) 320 is fixed to the rear end of the rotating shaft 312. Thereby, the rotating portion η? The sputum supply passage 318 and the atmospheric passage 319 communicate with the axial direction holes 32A and 322 provided in the rotary shaft 312, respectively, and the cold refrigerant supplied from the coolant supply port Μ* passes through the axial direction hole 32. When it is supplied to the tool, the adhesion confirmation air supplied from the air supply port 3丨5 is supplied to the taper hole of the rotating shaft 3〇丨 via the axial direction hole 322. [Patent Document 1] [Patent Document 2] Japanese Laid-Open Patent Publication No. Hei 10-225845 No. 129465.doc 200916239 SUMMARY OF THE INVENTION Problems to be Solved by the Invention However, Patent Document 1 and Patent Document 2 disclose In the spindle devices 200 and 300, both of the rotating shafts 201 and 3〇1 and the tie rods 2〇5 and 3〇4 are on the shaft.
方向形成小徑且長之貫通孔而設為冷卻劑或壓縮空氣之供 給流路，因此會有流路之加工困難，而在製作上需要較多 時間與費用之問題。此外，專利文獻2所記載之主軸裝置 300係使管306插通於形成於拉桿3〇4之軸方向之流路3〇5而 成為2重結構之供給流路，因此會有流路3 〇5之加工之困難 性，再加上結構變複雜之問題。 此外，迴轉接頭311之旋轉部317係為藉由旋盤加工等所 成形之一體零件，且藉由螺栓32〇而固定於旋轉軸3〇1，因 此須使设於旋轉部3 1 7之冷卻劑用通路3丨8及大氣用通路 319、與形成旋轉軸301之軸方向孔321及322分別連通，換 s之，須配合旋轉軸301與旋轉部31 7之位相加以固定，而 會有在組裝上需要步驟數之問題。此外，由於旋轉部3 ^ 7 係成形為一體零件’因此例如在與旋轉軸3〇1之接合部或 通路318、319之出口附近等，即使僅於旋轉部317之前端 部有缺失，亦須將迴轉接頭311分解而更換旋轉部317整 體’而在維修上有改善之餘地。 本發明係有鑑於前述之問題而完成者，其目的在提供一 種具備有可將切削液及壓縮空氣等之複數個流體供給至設 於旋轉軸之複數個流體供給路、具有優異維修性、且容易 組裝之迴轉接頭之主軸裝置。此外，另—目的係、在提供一 129465.doc -10· 200916239 種可使流體通過旋轉轴之流路容易、且可以低成本加工 再者可使内建（built-in)馬達之轉子組裝容易之主轴裝置 解決問題之技術手段 本發明之上述目的係藉由下述構成來達成。 (1) 一種主軸裝置，其特徵為包括： 殼體（housing); 奴轉轴，其係在該殼體内，相對於該殼體可相對旋轉如 配置，且在一端可夾持工具； 轴承’其係將前述旋轉軸旋轉自如地支撐於前述殼體；及 轉接頭（rotary j01nt)，其係、配置於該旋轉轴之另一端 ::且將流體供給至形成於前述旋轉軸之複數個流體供給 路， 之轉接頭包括旋轉部，其係具有分別與前述旋轉軸 部可於轴方向分離。體供給孔’且該旋轉 ⑺：::)之主軸裝置，其中前述旋轉部包括：旋轉基部， :、糸支撐於迴轉接頭之殼體；及旋轉連結部， (3)::螺栓緊固於該旋轉基部’且與前述旋轉軸連結。、 η·!:)，主軸裝置…在前述旋轉連結部形成有 *旋轉部可與前述旋轉軸一體旋轉。而别述Since the direction is a small diameter and a long through hole and is used as a supply path for the coolant or the compressed air, processing of the flow path is difficult, and it takes a lot of time and cost to manufacture. Further, in the spindle device 300 described in Patent Document 2, the pipe 306 is inserted into the flow path 3〇5 formed in the axial direction of the tie rod 3〇4 to form a supply flow path of a double structure, and thus the flow path 3 会有The difficulty of processing 5, coupled with the complexity of the structure. Further, the rotating portion 317 of the swivel joint 311 is formed as a one-piece part by a rotary disk processing or the like, and is fixed to the rotating shaft 3〇1 by the bolt 32〇, so that the coolant provided in the rotating portion 3 17 is required. The passages 3丨8 and the atmospheric passages 319 communicate with the axial direction holes 321 and 322 forming the rotary shaft 301, respectively, and must be fixed in accordance with the position of the rotary shaft 301 and the rotary portion 317, and may be assembled. The number of steps required is required. Further, since the rotating portion 3^7 is formed as an integral part', for example, in the vicinity of the joint portion with the rotating shaft 3〇1 or the outlet of the passages 318, 319, etc., even if only the front end portion of the rotating portion 317 is missing, The swivel joint 311 is disassembled and the entire rotating portion 317 is replaced, and there is room for improvement in maintenance. The present invention has been made in view of the above problems, and an object thereof is to provide a plurality of fluids capable of supplying cutting fluid, compressed air, or the like to a plurality of fluid supply paths provided on a rotating shaft, and having excellent maintainability and Spindle unit for swivel joints that are easy to assemble. In addition, the other purpose is to provide a 129465.doc -10·200916239 flow path that allows fluid to pass through the rotating shaft, and can be processed at low cost, and the rotor of the built-in motor can be assembled easily. TECHNICAL FIELD The above object of the present invention is achieved by the following configuration. (1) A spindle device, comprising: a housing; a slave shaft mounted in the housing, relative to the housing, rotatable as configured, and capable of holding a tool at one end; bearing 'The rotation shaft is rotatably supported by the casing; and a joint (rotary j01nt) is disposed at the other end of the rotating shaft: and supplies the fluid to the plural formed on the rotating shaft The fluid supply path includes a rotating portion that is separable from the rotating shaft portion in the axial direction. a spindle device that supplies a hole 'and a rotation (7):::), wherein the rotating portion includes: a rotating base, : a casing supported by the slewing joint; and a rotary joint, (3):: the bolt is fastened The rotating base ' is coupled to the aforementioned rotating shaft. η·!:), the spindle device is formed in the rotation coupling portion, and the *rotating portion is rotatable integrally with the rotating shaft. Others
()士（1)至（3)中任一項之主軸裝置，A 包括.笛彳士 、中别述紋轉連結部 '.第1中心孔’其係形成於其軸方向中 心孔’其係與該第1中心孔在工具側相連，且直心: 129465.doc 200916239 弟l中心孔大’及車由方命嘗 万向貝通孔，其係在前述糾中心 孔之周圍’與前述第1中孔 τ孔千仃地朝軸方向延伸，且 在第2中心孔開口。 (5) 如（4)之主軸裝置，其中前 、非圓形部形成於前述第1 中心孑L 。 (6) 如（1)至（5)中任一項之主軸裝置，其中 荊述设體包括安裝定子（stat > , 間殼體及裝卸自如地 f i L, 緊固於前述中間殼體之前側殼體； 前述旋轉轴包括與前述定子對向配置之轉子卜叫 前述軸承部包括相對於前述轉子在卫具側支撐前述旋轉 軸之第!軸承部、及相對於前述轉子在相反工具側支撐前 述旋轉軸之第2軸承部； 在前述殼體内内截有前述第2轴承部之軸承之外環，且 設有外徑較前述定子之内徑小之軸承轴套（山_广 ㈣前側殼體、前述旋轉轴、前述轉子、前述^轴承 部、珂述第2軸承部及前述其他呈 〃有軸承轴套之半組裝體 藉由解除前述前側殼體與前述中 T间叙體之緊固，可從前述 中間殼體向前述工具側—體抽出。 (7) —種主軸裝置，其特徵為包括： 殼體； 旋轉軸，其係在該殼體内，相 々曰對於该殼體可相對旋轉地 配置’且在一端可夾持工具； 馬達’其係、酉己置於前述殼體與前述旋轉轴之間； 第1軸承部’其係相對於前述馬達之轉子在^具側支撐 129465.doc -12- 200916239 前述旋轉輛； 第2軸承部，其係相對於 支撐前述旋轉軸；A 、'、、、、<轉子在相反工具側 轉子軸套，其係在前述第丨 可裝卸地外嵌於前述旋轉轴二與二述第2轴承部間’ 流體通過前述旋轉軸之流路=外肷前述馬達之轉子； 轉軸外周面與前述軸套内周面之間==互甘欠合之前述旋 (8) 如（7)之主軸裝置，发 定於前述轉子轴套…述轉子係藉由燒嵌而外嵌固 (9) 如⑺或⑻之主軸裝置，其中 在前述轉子軸套之周圍配 周面具有—對錐（U㈣面之錐^及固機構’其係包括在外 錐面扣合之—對切 n刀別與該錐形環之各 生； 、3由朝軸線方向推壓而使縮徑力產 轉Γ轉子抽套係藉由前述緊固機構而外嵌固定於前述旋 發明之效果 依據本發明之主軸裝 流體供給孔分別與旋轉轴之:嫩迴轉接頭之複數個 Γ供給至該複數個流雜供給路。由於迴轉㈣括， =向分離之旋轉部，在與_連接二= 旋轉部產生缺失時，m 接碩之 體，將旋轉部之-部分3 接頭讀而更換旋轉部整 維修。此外，由於可：：：進：更換等’就可容易地進行 J將具有稷數個流體供給孔之旋轉部予 ^ 29465.doc -13 - 200916239 、刀離進行裝作，因此可容易地加卫複數個流體供給孔。 此外，依據本發明，由於通過旋轉軸而使流體通過之流 路係包括形成在相互嵌合之旋轉軸外周面與包括轉子之轉 子軸套内周面之間之空間所構成’因此不需要加工困難之 :徑且長之貫通孔之加工’而可使流體通過旋轉軸之流路 谷易且以低成本進行加卫。藉此，可獲得具有簡單構成之 *路之廉價主軸裝置。此外’由於轉子轴套及轉子係在一(a) The spindle device of any one of (1) to (3), wherein A includes a whistle, and the middle center hole is formed in a central hole of the axial direction thereof. It is connected to the first center hole on the tool side, and is straight: 129465.doc 200916239 The younger center hole big 'and the car by the square life tastes the universal shell hole, which is around the aforementioned center hole' and the aforementioned The middle hole τ hole extends in the axial direction and opens in the second center hole. (5) The spindle device according to (4), wherein the front and non-circular portions are formed in the first center 孑L. (6) The spindle device according to any one of (1) to (5), wherein the mounting body comprises a mounting stator (stat >, an outer casing and a detachable fi L, fastened before the intermediate casing a side casing; the rotating shaft includes a rotor disposed opposite to the stator, wherein the bearing portion includes a first bearing portion that supports the rotating shaft on a guard side with respect to the rotor, and a support on an opposite tool side with respect to the rotor a second bearing portion of the rotating shaft; a bearing outer ring having the second bearing portion interposed in the housing; and a bearing bushing having an outer diameter smaller than an inner diameter of the stator (a front side of a mountain _ wide (four)) a housing, the rotating shaft, the rotor, the bearing portion, the second bearing portion, and the other semi-assembled body having the bearing bushing are released from the front housing and the middle T Solid, can be extracted from the aforementioned intermediate casing to the tool side body. (7) A spindle device characterized by: a housing; a rotating shaft, which is inside the housing, opposite to the housing Configurable relative to rotation 'and can be clamped at one end a motor that is placed between the housing and the rotating shaft; the first bearing portion is supported by the rotor of the motor on the side of the rotor 129465.doc -12-200916239; a bearing portion for supporting the rotating shaft; A, ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Between the second bearing portions, the flow path through which the fluid passes through the rotating shaft = the outer rotor of the motor; the outer peripheral surface of the rotating shaft and the inner peripheral surface of the bushing == the above-mentioned rotation (8) such as (7) The spindle device is defined in the rotor sleeve described above. The rotor is externally embedded by firing (9). The spindle device of (7) or (8), wherein the circumferential surface of the rotor sleeve has a pair of cones ( The U (four) face cone ^ and the solid mechanism 'includes the outer tapered surface to be engaged - the opposite n knife and the conical ring; 3, pressed by the direction of the axis to reduce the diameter of the rotor The effect of the outer sleeve of the present invention by the above-mentioned fastening mechanism is in accordance with the present invention. The shaft-mounted fluid supply holes are respectively supplied to the plurality of flow-mixing supply passages of the rotary shaft: a plurality of turns of the tender rotary joint. Due to the rotation (four), the rotating portion of the shaft is separated from the rotating portion of the rotating shaft. When m is connected to the body, the part of the rotating part is read and replaced by the rotating part. In addition, since it can be::: incoming: replacement, etc., it can be easily performed. J will have several fluid supply holes. The rotating portion is attached to the tooling device, so that the plurality of fluid supply holes can be easily applied. Further, according to the present invention, the flow path through which the fluid passes through the rotating shaft includes Formed in a space between the outer peripheral surface of the rotating shaft that is fitted to each other and the inner peripheral surface of the rotor sleeve including the rotor, so that it is not necessary to process: the processing of the diameter and the long through hole, and the fluid can pass through the rotating shaft. The flow of the road is easy and low-cost to defend. Thereby, an inexpensive spindle device having a simple configuration can be obtained. In addition, because the rotor bushing and the rotor are attached
體組裝之狀態下裝卸自如地固定於旋轉軸，因此可容易分 解’維修性大幅提昇。 【實施方式】 以下，根據圖式詳細說明本發明之主軸裝置之各實施形 態。 / (第1實施形態） 圖1係為本發明之第1實施形態之主軸裝置之縱剖面圖， 圖2係為圖1中之迴轉接頭之放大圖，圖3係為圖1中之由圓 A所包圍之部分之放大圖。另外，圖i中上側半部分係顯示 工具解除鬆開（unclamp)狀態，而下側半部分係顯示工呈夾 持狀態。 ~ 如圖1所示，主軸裝置10係包括：殼體u ;旋轉軸丨2, 其在殼體11内相對於殼體u可相對旋轉地配置；馬達6ι， 其配置於殼體11與旋轉軸12之間；第丨軸承部13，其相對 於馬達61之轉子63在工具側（一端側）旋轉自如地支撐旋轉 軸12，·第2軸承部14，其相對於轉子63在相反工具側（另一 端側）旋轉自如地支撐旋轉軸12 ;轉子軸套15，其在第！軸 I29465.doc •14· 200916239 承部13與第2軸承部14間，可裝卸地外後於旋轉轴12 ;油 壓鬆開機構部32，其配設於旋轉軸12之相反工具側之端 部，且藉由油壓將鬆開力賦予旋轉軸12 ;及迴轉接頭21 ’ 其將流體供給至旋轉軸12。 殼體11係包括：前側殼體丨la，其安裝於工作機械本 體，且經由第1軸承部13而轉動自如地支撐旋轉轴丨2之前 部；後側殼體1 lc，其經由第2軸承部14而轉動自如地支撐 旋轉軸12之後部；及中間殼體Ub，其配置在前側殼體iu 及後側殼體11c之間。在後側殼體llc係内嵌有相對於後側 殼體1 lc朝軸方向可滑動自如之軸承軸套7〇。此外，在前 側殼體11a之前端係設有前蓋16及前面覆蓋體（fr〇nt cover) 1 7 ° 在殼體11之中間殼體lib、與旋轉軸12之軸方向中間部 12a之間係内建有馬達61。馬達61之定子62係内嵌固定於 中間殼體11 b。此外，與定子62對向配置之馬達6丨之轉子 63係藉由燒嵌而外嵌固定於轉子軸套15。轉子軸套15之兩 端係藉由後述之緊固機構50而外嵌固定於旋轉軸12之軸方 向中間部12 a。 第1軸承部13及第2軸承部14係包括複數個（第丨軸承部13 係4個，第2軸承部14係2個）角接觸圓球（angular ba⑴軸承 26。角接觸圓球轴承26係分別包括内嵌於殼體丨丨之前側殼 體11a及軸承軸套70之外環22、外嵌於旋轉軸12之内環 23及配置在外％· 2 2及内5衣2 3間之作為轉動體之圓球2 4， 且藉由複數個襯墊25而規限於軸方向。另外，以第1軸承 129465.doc •15· 200916239 部13及第2軸承部14而言，雖係使用角接觸圓球軸承，惟 亦可將各種轴承任意組合加以使用。 在通過旋轉軸12之軸心所形成之軸方向孔27係配置：拉 桿3^其相對於旋轉軸12而於軸方向可相對移動地裝設； 及彈U，其以拉桿3G將工具支承座18拉人於軸方向内方 式卜哀於拉杯30，且在軸方向可壓縮地配 12與拉桿30之大徑部3〇_ μ 社疋轉釉 ^ 丨jUa之間。另外，以彈簧31而言，雖 ^使用圓盤彈簧，惟亦可使用線圈彈簧或螺旋圓盤彈簧 在拉桿3 〇之前端係形成有將工具支承座1 8夾持之夾頭 (C〇llet)2G，此卫具支承座18係在夾持狀態下與設於旋轉轴 =軸方向前部之錐孔19嵌合。此外，在拉桿川之後端係 配設有在鬆開之際用以將拉桿3〇推出於工具支承座a側之 油麼鬆開機構部3 2 ^ 亦請參照圖2，油壓鬆開機構部32係包括：汽缸 Tin — 34，其包括第1壓力油供給口 33A與第2壓力油供 人 ，及活塞（piston)35，其在該汽缸34内可移動地嵌 °右將由未圖示之油壓泵（pump)所供給之壓力油從箆 壓力油供給鳴供給至汽缸34，則活塞35即„；^ =移動而將拉桿30推出於工具支承座18側，而設為鬆開狀 ' 卜务將壓力油供給至第2壓力油供給口 3 3 B，則活 塞35即朝右方向移動，由拉桿30將工具支承座is夾持。 此外，在旋轉軸12之前部及後部係形成有從其軸方向前 端及後端朝向轴方向中心所形成之軸方向孔41A、41B、 129465.doc -16- 200916239 及使旋轉轴12之外周面與各軸方向孔41A、41B連通之徑 方向孔42A 42B。再者，在旋轉轴12之轴方向中間部⑵ 之外周面係在該外周面以使徑方向孔42A、42B彼此連通 之方式而於軸方向形成有溝部43。再者，在旋轉轴η之前 部係於與軸方向孔4丨 方向孔42A不同之位相形成 有曰攸别端朝向軸方向中心所形成之袖方向孔Μ '及使 拉杯30之軸方向孔3〇d與軸方向孔μ連通之徑方向孔 4 2 。 轉子軸套15係以將形成於輯⑷2之溝部4 3覆蓋之 外肷固定於旋轉轴丨2。如円 _ 如圖3所不，在轉子軸套15之兩端 二周面係配設有緊固機構5〇，用以將轉子輛套Η鎖緊固 疋轉軸12之外周面。以緊固機構5()而言，係具有雜形 ί衷 5 1、及一董 + 搭 。 .. 九。仏國之Ringfeder公司所製造之 SUPANRING(音譯）（商口昍、氣 )商σσ月）為一般所知。錐形環5 1係内周 面…之内徑具有與轉子軸套15之外徑相同尺寸，且於外 周面设有傾斜方向相互一 个丨對錐面51b，而形成為大 形。一對卡環52係具有與錐形環5!之錐面51b相同角 ^之錐内周面52a，且與錐形環51之錐面川扣合。一 環5 2係藉由螺栓5 3所腎151 n JU ' 壓·推壓。 。口，且藉由該獅朝轴線方向加 、此種緊固機構50係以覆蓋形成於旋轉轴U之溝部“之方 式使轉子轴套15外嵌於旋轉軸12之後，將螺栓與入並使 一對錐形環51朝轴方向相對移動（接近）。藉此，藉由錐面 之作用使半徑方向鎖緊力（縮徑力）產生而將轉子轴套Μ 129465.doc 200916239 鎖緊。藉此，轉子軸套15之内周面即縮徑而密著、固定於 旋轉軸12之外周面，並且將旋轉轴12之外周面與轉子轴套 15之内周面予以密封。 因此，流體通過在旋轉軸12之溝部43與轉子軸套Μ之内 周—面之間所形成之空間内’且流體通過旋轉㈣之流路 (第2流體供給路）4〇係由該溝部43與轉子軸套Η之内周面之 間之空間、以及軸方向孔41八、41B、徑方向孔“A、 所構成。另外，在轉子軸套15與旋轉軸12之間，於溝部“ 之軸方向外側係配置有〇環54，用以將兩者間之間隙密 封。此外，旋轉軸12之軸方向中間部12a亦可如圖4所示， 將其外周面整體設為較轉子轴套15之内周面更小徑，並於 旋轉軸12與轉子軸套15之間構成在圓周方向連續之環狀空 間s，以取代形成溝部43。再者，溝部43或環狀空間$亦可 藉由將轉子軸套15之内周面進行加工來構成。 在與旋轉軸12之轉子63相反工具側係安裝有：第2軸承 部14，與第2軸承部14嵌合之軸承軸套7〇 ;構成速度感測 器71之被檢測部72 ;與該被檢測部72一同用以固定第2軸 承部14之軸承26之内環23之螺帽（nut)73等，而任一者均設 定為較轉子63之内徑更小。 前側殼體11a係藉由未圖示之螺栓而裝卸自如地緊固於 t間殼體lib，而藉由將該螺栓之緊固解除，由組入有第j 軸承部13之前側殼體I】a、組入有拉桿3〇之旋轉軸12、轉 子63、第2軸承部14、及軸承軸套7〇等所組成之半組裝體u 即可從中間殼體9 一體地拔除。 129465.doc 18 200916239 此外，如圖2所示，在油壓鬆開機構部32之後端係藉由 與汽缸34之内周面36套筒嵌合而連結有迴轉接頭21。迴轉 接頭21係設有用於供給第2流體之大氣之著座大氣供給口 38、及用於供給第1流體之冷卻劑之冷卻劑供給口 39等之 複數個供給口，用以從未圖示之流體供給源供給流體（大 氣、冷卻劑）。The body is detachably attached to the rotating shaft in a state of being assembled, so that it can be easily disassembled and the maintainability is greatly improved. [Embodiment] Hereinafter, each embodiment of the spindle device of the present invention will be described in detail based on the drawings. 1 is a longitudinal sectional view of a spindle device according to a first embodiment of the present invention, FIG. 2 is an enlarged view of the rotary joint of FIG. 1, and FIG. 3 is a circle of FIG. A magnified view of the part surrounded by A. In addition, in the upper half of Fig. i, the tool is released from the unclamp state, and the lower half is displayed in the clamped state. As shown in FIG. 1, the spindle device 10 includes a housing u, a rotating shaft 丨2, which is rotatably disposed relative to the housing u in the housing 11, and a motor 6ι disposed in the housing 11 and rotating Between the shafts 12, the second bearing portion 13 rotatably supports the rotary shaft 12 on the tool side (one end side) with respect to the rotor 63 of the motor 61. The second bearing portion 14 is on the opposite tool side with respect to the rotor 63. (the other end side) rotatably supports the rotating shaft 12; the rotor bushing 15, which is at the first! Axis I29465.doc •14· 200916239 The bearing portion 13 and the second bearing portion 14 are detachably attached to the rotating shaft 12, and the hydraulic pressure releasing mechanism portion 32 is disposed at the opposite end of the rotating shaft 12 And the squeezing force is imparted to the rotating shaft 12 by the oil pressure; and the swivel joint 21' supplies the fluid to the rotating shaft 12. The casing 11 includes a front casing 丨la that is attached to the machine body, and rotatably supports a front portion of the rotating shaft 经由2 via the first bearing portion 13; a rear housing 1 lc that passes through the second bearing The portion 14 rotatably supports the rear portion of the rotary shaft 12, and the intermediate casing Ub is disposed between the front casing iu and the rear casing 11c. A bearing bush 7 slidably slidable in the axial direction with respect to the rear side casing 1 lc is fitted in the rear side casing llc. Further, a front cover 16 and a front cover are provided at the front end of the front side casing 11a. 1 7 ° between the intermediate casing lib of the casing 11 and the intermediate portion 12a of the axial direction of the rotary shaft 12. A motor 61 is built in. The stator 62 of the motor 61 is internally fitted and fixed to the intermediate casing 11b. Further, the rotor 63 of the motor 6 disposed opposite to the stator 62 is externally fitted and fixed to the rotor bushing 15 by caulking. Both ends of the rotor bushing 15 are externally fitted and fixed to the axially intermediate portion 12a of the rotary shaft 12 by a fastening mechanism 50 to be described later. The first bearing portion 13 and the second bearing portion 14 include a plurality of (the second bearing portion 13 and the second bearing portion 14 are two) angular contact balls (angular ba (1) bearing 26. The angular contact ball bearing 26 The inner ring 23 embedded in the front side casing 11a and the bearing bushing 70 of the casing 、, the inner ring 23 embedded in the rotating shaft 12, and the outer casing 2 and the inner casing 2 are respectively disposed. The ball 2 4 as a rotor is limited to the axial direction by a plurality of spacers 25. The first bearing 129465.doc •15·200916239 part 13 and the second bearing unit 14 are used. The angular contact ball bearing can be used in any combination of various bearings. The axial direction hole 27 formed by the axis of the rotating shaft 12 is disposed: the tie rod 3 is opposite to the rotating shaft 12 in the axial direction. The movable device; and the spring U, which pulls the tool support 18 in the axial direction by the tie rod 3G, screams in the pull cup 30, and compressably fits 12 and the large diameter portion of the pull rod 30 in the axial direction. _ μ 疋 疋 釉 ^ 丨 U U U U U U U U U U U U U U U U U U U U U U U U U U U The spiral disc spring is formed with a chuck (C〇llet) 2G for holding the tool support seat 18 at the end of the tie rod 3, and the guard support 18 is attached to the rotary shaft = shaft. The tapered hole 19 of the front direction is fitted. Further, at the rear end of the tie rod, the oil for releasing the pull rod 3〇 on the side of the tool support base a when loosening is provided, and the mechanism is released. Referring to FIG. 2, the hydraulic release mechanism portion 32 includes a cylinder Tin 34 including a first pressurized oil supply port 33A and a second pressurized oil supply, and a piston 35 in the cylinder 34. The pressure oil supplied by a hydraulic pump (not shown) is supplied from the pressure oil supply to the cylinder 34, and the piston 35 is moved to push the rod 30 out of the tool support. When the seat 18 is on the side and the loose pressure is supplied to the second pressure oil supply port 3 3 B, the piston 35 is moved in the right direction, and the tool holder i is held by the tie rod 30. The front portion and the rear portion of the rotating shaft 12 are formed with an axial direction formed from the front end and the rear end in the axial direction toward the center in the axial direction. 41A, 41B, 129465.doc -16- 200916239 and the radial direction hole 42A 42B which connects the outer peripheral surface of the rotating shaft 12 to each axial direction hole 41A, 41B. Moreover, the outer periphery (2) of the axial direction of the rotating shaft 12 In the outer peripheral surface, the groove portion 43 is formed in the axial direction so that the radial direction holes 42A and 42B communicate with each other. Further, the front portion of the rotation axis η is different from the axial direction hole 4 directional hole 42A. A sleeve hole '' formed in the center of the center toward the axial direction and a radial hole 4 2 that connects the axial direction hole 3〇d of the pull cup 30 with the axial direction hole μ are formed. The rotor bushing 15 is fixed to the rotating shaft 丨2 by the outer cymbal covered with the groove portion 43 formed in the series (4) 2. For example, as shown in Fig. 3, at both ends of the rotor bushing 15, a fastening mechanism 5 is provided on the two circumferential surfaces for fastening the rotor casing lock to the outer circumferential surface of the rotating shaft 12. In the case of the fastening mechanism 5 (), it has a hybrid shape 5 1 and a Dong + ride. .. nine. SUPANRING (Shangkou 昍, qi) σσ月) manufactured by Ringfeder Company of Laos is generally known. The inner circumference of the tapered ring 51 is formed to have the same inner diameter as the outer diameter of the rotor bushing 15, and is formed in a large shape by providing a pair of tapered surfaces 51b in the inclined direction on the outer peripheral surface. The pair of snap rings 52 have a tapered inner peripheral surface 52a at the same angle as the tapered surface 51b of the tapered ring 5!, and are engaged with the tapered surface of the tapered ring 51. One ring 5 2 is pressed and pressed by the kidney 151 n JU ' of the bolt 5 3 . . a port, and the lion is inserted in the direction of the axis, and the fastening mechanism 50 covers the groove formed on the rotating shaft U so that the rotor bushing 15 is externally fitted to the rotating shaft 12, and the bolt is inserted into the hole. The pair of tapered rings 51 are relatively moved (closed) in the axial direction. Thereby, the rotor bushing 129 129465.doc 200916239 is locked by the action of the tapered surface to cause the radial locking force (reducing force). Thereby, the inner circumferential surface of the rotor bushing 15 is reduced in diameter, adhered to and fixed to the outer circumferential surface of the rotating shaft 12, and the outer circumferential surface of the rotating shaft 12 is sealed to the inner circumferential surface of the rotor bushing 15. Therefore, the fluid The groove portion 43 and the rotor are passed through a space formed between the groove portion 43 of the rotating shaft 12 and the inner circumferential surface of the rotor bushing and the fluid passes through the rotating (four) flow path (second fluid supply path) 4 The space between the inner circumferential surfaces of the bushings, and the axial holes 41, 41B and the radial holes "A". Further, between the rotor bushing 15 and the rotating shaft 12, an annulus 54 is disposed on the outer side in the axial direction of the groove portion to seal the gap therebetween. Further, the axial direction intermediate portion 12a of the rotating shaft 12 is also As shown in FIG. 4, the entire outer peripheral surface is made smaller than the inner circumferential surface of the rotor bushing 15, and an annular space s continuous in the circumferential direction is formed between the rotating shaft 12 and the rotor bushing 15, Instead of forming the groove portion 43. Further, the groove portion 43 or the annular space $ may be formed by machining the inner circumferential surface of the rotor bushing 15. The tool side is attached to the rotor 63 opposite to the rotor 63 of the rotating shaft 12: The bearing portion 14 and the bearing bushing 7 that is fitted to the second bearing portion 14; the detected portion 72 that constitutes the speed sensor 71; and the bearing 26 for fixing the second bearing portion 14 together with the detected portion 72 The nut 73 or the like of the inner ring 23 is set to be smaller than the inner diameter of the rotor 63. The front side casing 11a is detachably fastened to t by a bolt (not shown). The housing lib, by releasing the fastening of the bolt, the front housing I]a of the j-th bearing portion 13 is incorporated, and the tie rod is incorporated The semi-assembled body u composed of the rotating shaft 12, the rotor 63, the second bearing portion 14, and the bearing bushing 7〇 can be integrally removed from the intermediate casing 9. 129465.doc 18 200916239 In addition, as shown in the figure As shown in Fig. 2, the swivel joint 21 is coupled to the inner peripheral surface 36 of the cylinder 34 by the end of the hydraulic pressure release mechanism portion 32. The swivel joint 21 is provided with an atmosphere for supplying the second fluid. A plurality of supply ports, such as the atmosphere supply port 38 and the coolant supply port 39 for supplying the coolant of the first fluid, are used to supply a fluid (atmosphere, coolant) from a fluid supply source (not shown).
迴轉接頭21係包括藉由螺栓37而固定於迴轉接頭Μ之旋 轉基部29之旋轉連結部44。旋轉基部29係藉由未圖示之轉 動軸承而旋轉自如地支撐於迴轉接頭21之殼體。旋轉連灶 部44係藉由„栓37卸除，即可容易地從組人於迴轉接頭 之双體之疑轉基部29分離，而插人至油壓鬆開機構部^ 之活塞35之中心孔内。另外，旋轉基部29與旋轉連結部44 係構成旋轉部。 凝轉基部29係、包括用於供給來自冷卻劑供給㈣之冷卻 劑之冷卻劑孔81、及用於供給來自著座大氣供給口38之大 氣之大氣孔82,而冷卻劑孔81係於延伸於卫具側 83開口。 1 °丨4係包括形成於其軸方向中心，用於 插入旋轉基部29之突出部μ夕哲 之第1中心孔46、與第】中心孔 4 6在工具側相連，且較筮】由 孔46大徑之第2中心孔45、 及在第1中心孔牝之周圍，盘 /、弟1中心孔46平行地朝軸方向 乙伸，於弟2中心孔45開口 <釉方向貫通孔47。 冷卻劑孔81係經由苐n、 U孔46而與形成於拉桿30之軸 心之小徑孔30d連接，哕知相千 ΠΧ干0係構成旋轉軸1 2之第〗流體 129465.doc 200916239 供給路。大氣孔82係藉由軸方向貫通孔47及第2中心孔45 而與形成於拉桿30之小徑孔3〇d之周圍之孔3〇e連接。此孔 3 0 e係與如述之流路4 0 —同構成旋轉轴12之第2流體供給路 85。此外，冷卻劑孔81與第1中心孔46係構成迴轉接頭以 之第1流體供給孔，而大氣孔82、及軸方向貫通孔47、第2 中心孔45係構成迴轉接頭21之第2流體供給孔。 在第1中心孔46係局部形成有6角形或8角形等之非圓形 部46a，與形成在拉桿30之後端部，具有大致同一形狀之 外周面之非圓形軸部30c在軸方向移動自如地嵌合。藉 此，藉由馬達61所驅動之旋轉軸丨2之旋轉，即經由相互嵌 合之非圓形軸部30c與非圓形部46a之嵌合而使旋轉連結部 44及旋轉基部29旋轉。 在第1中心孔46較非圓形部46a靠工具侧部分，係形成為 圓筒形狀’與拉桿30之小徑側筒部3〇f在軸方向移動自如 地嵌合，而第2中心孔45係與在拉桿30較小徑側筒部3〇f靠 工具側所形成之大徑側筒部3〇1)在軸方向移動自如地嵌 合。此外，在此第1中心孔46與小徑側筒部3〇f之間、及第 2中、孔45與大徑側筒部3 〇b之間係配設有〇環或u墊圈 (packing)等之密封構件48、49。 因此’在旋轉連結部44形成階段孔（第1中心孔46及第2 中心孔45)，並且將拉桿30設為階段軸，藉由相互嵌合， 可使迴轉接頭21之複數個流體供給孔、及旋轉轴丨2之複數 個流體供給路84、85同時連通而連結。 藉此’複數個流體即通過分別獨立之流路而供給。另 129465.doc -20- 200916239 外，密封構件48、49並不限定於〇環或u墊圈，此外，材 料亦可使用氟橡膠、丙烯酸（acrylic)橡膠、亞硝酸鹽 (nitrile)橡膠等適當之材料。 藉此，從迴轉接頭21之冷卻劑供給口 39所供給之冷卻劑 液即透過通過構成旋轉基部29之冷卻劑孔81、旋轉連結部 44之第1中心孔46、及第！流體供給路討之拉桿川之軸心之 小徑孔30d而供給至工具支承座18，且喷出至工具。 此外，從迴轉接頭21之著座大氣供給口 38所供給之大氣 係依據在構成旋轉基部29之大氣孔82、旋轉連結部料之軸 方向貫通孔47及第2中心孔45、及第2流體供給路，於拉桿 30之孔3〇e、流路40(軸方向孔41B、徑方向孔42b、溝部判 與轉子軸套15之内周面之間所形成之空間、徑方向孔 42A軸方向孔41A)之順序通過，而供給至設於主轴裝置 1〇之前端部之著座檢測噴嘴28，並以該壓力變化檢測工具 之著座已正常進行。 另外，机體並不限定於冷卻劑液或大氣，亦可從軸方向 孔41A、41B設置與各個第}軸承部13、第2軸承部14連通 之徑方向孔（未圖示），且經由迴轉接頭21供給潤滑油而使 第1轴承# 1 3、第2軸承部14潤滑。此外，如圖5所示，藉 由將複數組軸方向孔41A、41B、徑方向孔42A、42b、及 溝邵43，與旋轉軸12之圓周方向離間而並行設置之複數個 流路40、40, ’即可將種類不同之流體（例如切削液、壓縮 空軋、潤滑油)同時供給至不同之位置。此情形下，在鄰 接之流路40間所形成之流路40,係藉由將拉桿30之小徑孔 129465.doc 200916239 30d與流路40'之徑方向孔42B連通來構成。 因此，依據本實施形態之主軸裝置1〇，係從旋轉自如地 支撐於迴轉接頭2丨之殼體之旋轉基部29，藉由在軸方向可 分離之旋轉連結部44，使形成於迴轉接頭21之第丨及第2流 體供給孔、及形成於旋轉軸12之第丨及第2流體供給路科、 85分別連通而供給流體’因此於迴轉接頭21之旋轉部產生 缺失等之際，不必將迴轉接頭21分解而更換旋轉部整體， 只要將旋轉連結部44卸除而可容易進行維修。此外，在製 作旋轉連結部44之際，由於可個別製作旋轉連結部料，因 此可容易加工複數個孔45、46、47。 此外，依據本實施形態之主軸裝置1()，迴轉接頭21之殼 體係藉由卸除安裝螺栓90而使旋轉連結部料從拉桿3〇在軸 方向分離，且使迴轉接頭21整體可從油壓鬆開機構部”分 離，於僅有迴轉接頭故障時，維修即成為非常容易。 此外，藉由將拉桿30之非圓形軸部3〇(;插入並扣合於在 旋轉連結部44之第】中心孔46所形成之非圓形部_，即可 容易地使旋轉㈣之複數個流體供給路8[ 85與迴轉接頭 21之複數個流體供給孔連通’且可一體旋轉地連結。 此外，旋轉部係包括支#於迴轉接頭21之殼體之旋轉基 部29、及與旋轉轴12連結之旋轉連結部44，若使旋轉連結 部44可裝卸地螺栓緊固於旋轉基部29，則可容易地將旋轉 連結部44從旋轉基部29卸除，而使維修性大幅提昇。再 者’由於將非圓形部46a形成於旋轉連結部料，且將拉桿 30插入於非圓形部46a而與端部周面扣合，且使旋轉連結 129465.doc -22- 200916239 部44與拉桿30可一體旋轉地連結，因此容易將拉桿3〇之非 圓形軸部30c插入至旋轉連結部44之非圓形部46a，而進行 旋轉連結部44與旋轉軸12之位相對位。 此外，旋轉連結部44係包括：在其軸方向中心所形成之 第1中〜孔46，與第1中心孔46在工具側相連，且較第1中 心孔46更大徑之第2中心孔45 ;及在第1中心孔46之周圍與 第1中心孔46平行地朝軸方向延伸，且於第2中心孔45開口 之軸方向貫通孔47。藉此，即可容易地使旋轉軸12之複數 個流體供給路84、85、及包括旋轉連結部44之迴轉接頭21 之複數個流體供給孔連通，且經由旋轉連結部44而使複數 個流體獨立地供給。 再者，由於非圓形部46a係形成於第i中心孔46，因此不 必增長奴轉連結部44之軸方向長度，即可使旋轉連結部44 與拉桿30 —體旋轉。 此外，依據本實施形態之主軸裝置丨〇，由於在第】軸承 部13、及第2軸承部14間具有外嵌於旋轉軸12之轉子轴套 η，而流體通過旋轉軸12之流路40係包括在相互嵌合之旋 轉轴12之外周面與轉子軸套15之内周面之間所設之空間， 因此不需要加工固難之小徑且較長貫通孔之加工，流體通 過旋轉軸12之流路4Q即可容易且以低成本進行加工，且成 為具有簡單構成之流路4G之廉價者。此外，由於係使用外 嵌有馬達内建（built in)型之轉子63之轉子軸套15而構成流 路40’因此不必增加零件數量，即可容易且以低成本將藉 由外肷馬達61而於軸方向變長之旋轉軸12之流路進行加 129465.doc -23- 200916239 工。 此外，由於流體通過旋轉軸12之流路4〇之一部分之空間 係由相互嵌合之旋轉軸12之外周面與轉子軸套。之内周面 所組成’再者’轉子軸套15係藉由緊固機構50而裝卸自如 地固定於旋轉軸12，因此相對於旋轉軸12可使轉子63與轉 子軸套15 —同容易裝卸，而使維修性大幅提昇。 此外，若藉由燒嵌將轉子63外嵌•固定於轉子軸套15， 則可確實S]定，此外可容易地將轉子63與轉子軸套1 5實質 地作為1個零件來處理。 再者，右設為在轉子軸套15之周圍，配置具有在外周面 具有一對錐面51b之錐形環51、及與錐形環51之各錐面5ib 刀別4 &之對卡環52之緊固機構50,且藉由在將一對卡 裱52朝軸線方向推壓時所產生之縮徑力而緊固轉子軸套 15，且將旋轉軸12之外周面與轉子軸套15之内周面之間加 以密封並固定，即可將轉子軸套15相對於旋轉軸12容易地 裝卸。藉此，在異物侵入旋轉軸12之外周面與轉子軸套15 之内周面之間所形成之空間（流路）等需要維修之情形下， 即可將轉子軸套1 5容易地從旋轉軸裝卸而進行維修。 (第2實施形態） 圖6係為本發明之第2實施形態之主軸裝置之縱剖面圖。 如圖6所示’主軸裝置100係包括：殼體m ;旋轉軸ιι2， 其在殼體111内相對於殼體11丨可相對旋轉地配置；配置在 殼體111與旋轉軸112之間之工具側之複數個（在本實施形 態中為2個）第1軸承部11 3及相反工具側之複數個（在本實施 129465.doc -24- 200916239 形悲中為2個）第2軸承部114 ;及軸套115，在第丨及第2軸 承部113、114間’外嵌於旋轉轴U2之軸方向中間部 112a。The swivel joint 21 includes a swivel joint portion 44 that is fixed to the swivel base portion 29 of the swivel joint by bolts 37. The rotary base 29 is rotatably supported by the housing of the swivel joint 21 by a rotary bearing (not shown). The rotary venting portion 44 is easily detached from the suspected base portion 29 of the slewing joint by the shackle 37, and is inserted into the center of the piston 35 of the hydraulic release mechanism portion. In addition, the rotating base portion 29 and the rotary joint portion 44 constitute a rotating portion. The condensing base portion 29 includes a coolant hole 81 for supplying a coolant from the coolant supply (4), and for supplying the atmosphere from the seating atmosphere. The atmospheric air hole 82 of the supply port 38, and the coolant hole 81 is extended to the opening of the guard side 83. The 1°丨4 system includes a protrusion formed at the center of the axial direction for inserting the protruding portion of the rotating base 29. The first center hole 46 and the first center hole 46 are connected to the tool side, and the second center hole 45 having a large diameter from the hole 46, and around the first center hole, the center of the disk/body 1 The hole 46 extends in parallel in the axial direction, and the center hole 45 of the second body is opened in the glaze direction through hole 47. The coolant hole 81 is formed by the 苐n, U hole 46 and the small diameter hole formed in the axial center of the tie rod 30. 30d connection, 哕知相千ΠΧ干0系 constitutes the rotating shaft 1 2 of the first fluid 129465.doc 200916239 supply road The air hole 82 is connected to the hole 3〇e formed around the small diameter hole 3〇d of the tie rod 30 by the axial direction through hole 47 and the second center hole 45. This hole 30 e is connected to the flow as described above. The path 40 is the same as the second fluid supply path 85 constituting the rotating shaft 12. The coolant hole 81 and the first center hole 46 constitute a first fluid supply hole for the swivel joint, and the air hole 82 and the axial direction are continuous. The hole 47 and the second center hole 45 constitute a second fluid supply hole of the swivel joint 21. The first center hole 46 is partially formed with a non-circular portion 46a of a hexagonal shape or an octagonal shape, and is formed at the rear end of the tie rod 30. The non-circular shaft portion 30c having a peripheral surface having substantially the same shape is movably fitted in the axial direction. Thereby, the rotation of the rotating shaft 驱动2 driven by the motor 61, that is, the non-circular fitting by mutual fitting The shaft portion 30c is fitted to the non-circular portion 46a to rotate the rotation coupling portion 44 and the rotation base portion 29. The first center hole 46 is formed in a cylindrical shape from the tool-side portion of the non-circular portion 46a. The small-diameter side tubular portion 3〇f of the tie rod 30 is movably fitted in the axial direction, and the second central hole 45 is compared with the tie rod 30. The large-diameter side tubular portion 3〇1) formed on the tool side of the radial-side tubular portion 3〇 is movably fitted in the axial direction. Further, the first central hole 46 and the small-diameter side tubular portion 3〇f are The sealing members 48 and 49 such as an ankle ring or a u-packing are disposed between the second intermediate hole 45 and the large-diameter side tubular portion 3 〇b. Therefore, the stepped hole is formed in the rotary joint portion 44. (the first center hole 46 and the second center hole 45), and the tie rod 30 is set as a stage shaft, and by fitting each other, a plurality of fluid supply holes of the rotary joint 21 and a plurality of fluids of the rotary shaft 丨2 can be obtained. The supply paths 84 and 85 are simultaneously connected and connected. Thereby, a plurality of fluids are supplied through separate flow paths. Further, the sealing members 48 and 49 are not limited to the annulus or the u-ring, and the material may also be a fluorine rubber, an acrylic rubber, a nitrile rubber or the like. material. Thereby, the coolant liquid supplied from the coolant supply port 39 of the swivel joint 21 passes through the coolant hole 81 constituting the rotary base portion 29, the first center hole 46 of the rotary joint portion 44, and the first! The fluid supply path is supplied to the tool holder 18 by the small diameter hole 30d of the shaft of the tie rod, and is discharged to the tool. Further, the atmosphere supplied from the seating air supply port 38 of the swivel joint 21 is based on the air hole 82 constituting the rotating base portion 29, the axial direction through hole 47 and the second center hole 45, and the second fluid. The supply path is the hole 3〇e of the tie rod 30, the flow path 40 (the axial direction hole 41B, the radial direction hole 42b, the space formed between the groove portion and the inner circumferential surface of the rotor bushing 15, and the radial direction hole 42A axial direction). The order of the holes 41A) is supplied to the seating detecting nozzles 28 provided at the ends of the spindle device 1A, and the seating of the pressure detecting means is normally performed. In addition, the body is not limited to the coolant liquid or the atmosphere, and a radial hole (not shown) that communicates with each of the first bearing portion 13 and the second bearing portion 14 may be provided from the axial direction holes 41A and 41B, and The rotary joint 21 supplies lubricating oil to lubricate the first bearing #1 3 and the second bearing portion 14. Further, as shown in FIG. 5, a plurality of flow paths 40 which are disposed in parallel with the circumferential direction of the rotary shaft 12 by the plurality of array axial direction holes 41A, 41B, the radial direction holes 42A, 42b, and the groove 43 are 40, 'You can supply different types of fluids (such as cutting fluid, compressed air rolling, lubricating oil) to different locations. In this case, the flow path 40 formed between the adjacent flow paths 40 is formed by communicating the small diameter hole 129465.doc 200916239 30d of the tie rod 30 with the radial direction hole 42B of the flow path 40'. Therefore, the spindle device 1 according to the present embodiment is rotatably supported by the rotary base portion 29 of the housing of the swivel joint 2, and is formed on the swivel joint 21 by the rotary joint portion 44 detachable in the axial direction. The second and second fluid supply holes and the second and second fluid supply paths 85 and 85 formed in the rotary shaft 12 are respectively connected to each other to supply the fluid. Therefore, it is not necessary to cause a loss or the like in the rotating portion of the rotary joint 21. When the swivel joint 21 is disassembled and the entire rotating portion is replaced, the rotation connecting portion 44 can be removed and the maintenance can be easily performed. Further, when the rotary joint portion 44 is formed, since the rotary joint portion can be separately produced, the plurality of holes 45, 46, and 47 can be easily processed. Further, according to the spindle device 1 () of the present embodiment, the housing of the swivel joint 21 is separated from the tie rod 3 in the axial direction by the attachment of the mounting bolt 90, and the swivel joint 21 is entirely oil-removable. The pressure release mechanism portion is separated, and maintenance is very easy when only the rotary joint is broken. Further, by inserting and fastening the non-circular shaft portion 3 of the tie rod 30 to the rotary joint portion 44 The non-circular portion formed by the center hole 46 can easily connect the plurality of fluid supply paths 8 [85 of the rotation (4) to the plurality of fluid supply holes of the rotary joint 21 and can be integrally rotatably coupled. The rotating portion includes a rotating base portion 29 of the housing of the swivel joint 21 and a rotating joint portion 44 coupled to the rotating shaft 12. When the rotating connecting portion 44 is detachably bolted to the rotating base portion 29, The rotation coupling portion 44 is easily removed from the rotation base portion 29, and the maintainability is greatly improved. Further, the non-circular portion 46a is formed in the rotation joint portion, and the tie rod 30 is inserted into the non-circular portion 46a. Fasten to the end surface of the end 129465.doc -22- 200916239 The portion 44 and the tie rod 30 are integrally rotatably coupled, so that the non-circular shaft portion 30c of the tie rod 3 is easily inserted into the non-circular portion 46a of the rotary joint portion 44, and the joint portion is rotated. 44 is opposite to the position of the rotary shaft 12. Further, the rotary joint portion 44 includes a first middle hole 46 formed at the center in the axial direction thereof, and is connected to the first center hole 46 on the tool side, and is closer to the first center. The second center hole 45 having a larger diameter of the hole 46; and the hole extending in the axial direction in parallel with the first center hole 46 around the first center hole 46, and the through hole 47 in the axial direction of the opening of the second center hole 45. Thus, the plurality of fluid supply paths 84, 85 of the rotary shaft 12 and the plurality of fluid supply holes including the rotary joint 21 of the rotary joint portion 44 can be easily communicated, and the plurality of fluids can be independent via the rotary joint portion 44. Further, since the non-circular portion 46a is formed in the i-th center hole 46, the rotation coupling portion 44 and the tie rod 30 can be rotated integrally without increasing the axial length of the slave coupling portion 44. According to the spindle device of the embodiment, The first bearing portion 13 and the second bearing portion 14 have a rotor bushing η that is externally fitted to the rotating shaft 12, and the flow path 40 through which the fluid passes through the rotating shaft 12 is included in the outer peripheral surface of the rotating shaft 12 that is fitted to each other. Since the space provided between the inner circumferential surfaces of the rotor bushing 15 does not require machining of a small diameter and a long through hole, the fluid can be easily and inexpensively processed through the flow path 4Q of the rotating shaft 12. Moreover, it becomes a cheaper of the flow path 4G which has a simple structure. Moreover, since the flow path 40' is comprised using the rotor bushing 15 in which the motor built-in type rotor 63 is externally inserted, it is not necessary to increase the number of parts. The flow path of the rotary shaft 12 which is lengthened in the axial direction by the outer motor 61 can be easily and at low cost, and can be added to 129465.doc -23-200916239. Further, since the space through which the fluid passes through one of the flow paths 4 of the rotary shaft 12 is the outer peripheral surface of the rotary shaft 12 and the rotor sleeve which are fitted to each other. The 'further' rotor bushing 15 formed on the inner circumferential surface is detachably fixed to the rotating shaft 12 by the fastening mechanism 50, so that the rotor 63 and the rotor bushing 15 can be easily attached and detached with respect to the rotating shaft 12. , and the maintenance is greatly improved. Further, if the rotor 63 is externally fitted and fixed to the rotor bushing 15 by the caulking, the rotor 63 and the rotor bushing 15 can be easily handled as one component. Further, the right side is disposed around the rotor bushing 15, and is provided with a tapered ring 51 having a pair of tapered surfaces 51b on the outer peripheral surface, and a pair of tapered surfaces 5ib of the tapered ring 51 The fastening mechanism 50 of the ring 52 fastens the rotor bushing 15 by the reducing force generated when the pair of the latches 52 are urged in the axial direction, and the outer peripheral surface of the rotating shaft 12 and the rotor bushing The rotor bushing 15 can be easily attached and detached with respect to the rotating shaft 12 by sealing and fixing the circumferential surfaces therebetween. Thereby, the rotor bushing 15 can be easily rotated from the space where the space (flow path) formed between the outer peripheral surface of the rotating shaft 12 and the inner peripheral surface of the rotor bushing 15 needs to be repaired. The shaft is loaded and unloaded for maintenance. (Second Embodiment) Fig. 6 is a longitudinal sectional view showing a spindle device according to a second embodiment of the present invention. As shown in FIG. 6 , the 'spindle device 100 includes: a housing m; a rotating shaft ιι 2, which is rotatably disposed relative to the housing 11 in the housing 111; and is disposed between the housing 111 and the rotating shaft 112. a plurality of (on the present embodiment, a plurality of) first bearing portions 11 3 and a plurality of opposite tool sides (two in the present embodiment 129465.doc -24-200916239), the second bearing portion 114; and the sleeve 115 is externally fitted between the second and second bearing portions 113 and 114 in the axial direction intermediate portion 112a of the rotating shaft U2.
设體111係包括：前側殼體丨丨丨a ,其安裝於工作機械本 體，且經由第1軸承部113而轉動自如地支撐旋轉軸丨丨2之 别部；後側殼體111 c，其經由第2軸承部丨丨4而轉動自如地 支撐旋轉軸112之後部；及中間殼體丨丨lb，其配置在前側 殼體111a及後側殼體lllc之間。此外，在前側殼體111&之 前端係設有前蓋116及前面覆蓋體（fr〇nt c〇ver)U7。 旋轉軸112係在其軸方向前部及後部具有較軸方向中間 部112M、徑之小徑軸部U2b、U2c，而於小徑軸部 设有用以安裝工具支承座丨丨8之錐孔丨19。此外，在小徑軸 部112c係為了驅動旋轉軸！ 12而外嵌固定有用於懸架皮帶 (belt)151之滑輪（puney)152，再者，在小徑軸部n2c之後 端係經由以未圖示之螺栓等所固定之圓盤構件12〇而連結 有迴轉接頭12 1。 體 各軸承部113、114係分別包括内嵌在殼體lu之前側殼 Hla及後側殼體Ule之外環122、外嵌在旋轉軸ιΐ2之小 徑軸部112b、il2c之内環123、及配置在外環122及内環 123間之作為轉動體之圓球124，且藉由複數個襯墊⑵及 螺帽12b而規限於軸方向。另外，以第丨軸承部〖Η、I"而 言’雖係使用角接觸圓球轴承，惟亦可將各種車由承任意組 合加以使用。 拉桿130，其相對於旋 在通過旋轉軸112之内部係配置 129465.doc -25- 200916239 轉軸112而於軸方向可相對移動地裝設；及弓 拉桿13 0將.The installation body 111 includes a front side casing 丨丨丨a that is attached to the machine body, and rotatably supports the other part of the rotating shaft 经由2 via the first bearing portion 113; the rear side casing 111c, The rear portion of the rotating shaft 112 is rotatably supported via the second bearing portion 丨丨4, and the intermediate casing 丨丨1b is disposed between the front side casing 111a and the rear side casing 111c. Further, a front cover 116 and a front cover (U7) are provided at the front end of the front side casing 111 & The rotating shaft 112 has a relatively axial direction intermediate portion 112M and a small diameter shaft portion U2b, U2c at the front and rear portions in the axial direction, and a tapered hole for mounting the tool support base 8 at the small diameter shaft portion. 19. Further, the small-diameter shaft portion 112c is for driving the rotating shaft! 12, a pulley 152 for a suspension belt 151 is externally fixed, and the rear end of the small-diameter shaft portion n2c is connected via a disk member 12 that is fixed by a bolt or the like (not shown). There is a swivel joint 12 1 . Each of the body bearing portions 113 and 114 includes an outer ring 122 embedded in the outer side shell H1a and the rear side casing Ule, and an inner ring 123 embedded in the small-diameter shaft portions 112b and il2c of the rotating shaft ι2, respectively. And a ball 124 as a rotating body disposed between the outer ring 122 and the inner ring 123, and is limited to the axial direction by a plurality of pads (2) and nuts 12b. In addition, although the 丨, I" of the 丨 bearing part is an angular contact ball bearing, various vehicles can be used in any combination. The tie rod 130 is movably mounted in the axial direction with respect to the inner shaft of the rotary shaft 112 and is disposed 129465.doc -25-200916239, and the bow rod 13 will be.
’及彈I 13 1，其以 拉桿1 3 0， 1 3 0之大徑^ 圓盤彈簧，惟亦可使用線圈彈簧或螺旋圓盤彈簧等。 在拉桿130之前端係形成有保持球132並將工具支承座 118之拉杯螺栓118&(卩1111以11{13)夹持之夾頭部133。此外， 在拉桿130之後端係從形成於小徑軸部丨丨2c之開口 1 突出 而固定有鬆開桿（11如1細1) bar)153，而於更換工具支承座 Π 8之際，使鬆開桿153朝軸方向前方滑動移動，並將拉桿 130推出於工具支承座118側，使球132移動至位於錐孔119 之後方之夾嵌凹部112e。 此外，在旋轉軸112之前部及後部形成有從其軸方向前 端及後端朝向軸方向中心所形成之轴方向孔141A、 141B、及使叙轉軸U2之外周面與各軸方向孔141Α、ι41β 連通之徑方向孔142A、142B。再者，在旋轉軸112之軸方 向中間部11 2a之外周面係在該外周面以使徑方向孔丨42a、 142B彼此連通之方式而於軸方向形成有溝部143。 軸套11 5係以將形成於旋轉軸112之溝部143覆蓋之方式 外嵌於旋轉軸112 ’藉由與在旋轉軸丨丨2之軸方向中間部 11 2a之外周面所形成之環狀凸部11 2f抵接而定位於軸方 向。此外，在軸套丨丨4與旋轉軸丨丨2之間、溝部143之軸方 向外側係配置有〇環144。藉此，流體通過旋轉軸112之流 路140即由在軸方向孔i41A、i41]B、徑方向孔142A、 129465.doc -26- 200916239 42B、及溝部143與軸套115之内周面之間所形成之空間所 構成。 再者，在固定於旋轉軸112之後端之圓盤構件12〇係形成 有從設於中心之中心孔145分歧為複數個之流體分配孔 146，而中心孔145係與形成於迴轉接頭i 2丨之流體供給口 147連通。'And the bomb I 13 1, which uses the rod 1 3 0, 1 3 0 large diameter ^ disc spring, but coil spring or spiral disc spring can also be used. At the front end of the tie rod 130, a chuck portion 133 that holds the ball 132 and holds the pull cup bolt 118 & (卩 1111 at 11{13) of the tool support base 118 is formed. Further, at the rear end of the tie rod 130, a release lever (11 such as a thin 1) bar 153 is protruded from the opening 1 formed in the small-diameter shaft portion 丨丨2c, and when the tool support base 8 is replaced, The release lever 153 is slid forward in the axial direction, and the pull lever 130 is pushed out on the tool support base 118 side, so that the ball 132 is moved to the clip recessed portion 112e located behind the tapered hole 119. Further, the front and rear portions of the rotary shaft 112 are formed with axial direction holes 141A and 141B formed from the front end and the rear end in the axial direction toward the center in the axial direction, and the outer peripheral surface of the revolving shaft U2 and the axial direction holes 141, ι 41β. The radial direction holes 142A, 142B are connected. Further, a groove portion 143 is formed in the axial direction so that the outer peripheral surface of the intermediate portion 11 2a of the rotating shaft 112 is formed on the outer peripheral surface such that the radial holes 42a and 142B communicate with each other. The boss 11 5 is externally fitted to the rotating shaft 112' so as to cover the groove portion 143 formed on the rotating shaft 112, and is formed by an annular convex portion formed on the outer peripheral surface of the intermediate portion 11 2a in the axial direction of the rotating shaft 丨丨2. The portion 11 2f abuts and is positioned in the axial direction. Further, an ankle ring 144 is disposed between the boss 丨丨 4 and the rotating shaft 丨丨 2 and outside the axial direction of the groove portion 143. Thereby, the flow path of the fluid passing through the rotary shaft 112 is the inner circumferential surface of the axial direction holes i41A, i41] B, the radial direction holes 142A, 129465.doc -26 - 200916239 42B, and the groove portion 143 and the sleeve 115. The space formed by the space. Further, the disk member 12 fixed at the rear end of the rotating shaft 112 is formed with a plurality of fluid dispensing holes 146 which are branched from the center hole 145 provided in the center, and the center hole 145 is formed in the swivel joint i 2 The fluid supply port 147 of the crucible is in communication.
藉此，通過迴轉接頭121之流體供給口 147、圓盤構件 120之中心孔145、流體分配孔146所供給之切削液即依作 為流路140之軸方向孔141B、徑方向孔142B、溝部143、 徑方向孔142A、軸方向孔141A之順序通過，且經由設於 工具支承座11 8之切削液流路i丨8b而噴出至工具丨5{)。 另外，流體、及用於供給流體之特定之部位並不限定於 切削液及切削液流路118b，亦可設置從軸方向孔Mia、 141B與各個軸承部113、114連通之徑方向孔（未圖示），且 經由迴轉接頭121及圓盤構件12〇而供給潤滑油使軸承部 113、114潤滑。再者此外，亦可設為設置從軸方向孔141八 與錐孔119連通之流路（未圖示），並從迴轉接頭i2i及圓盤 構件120供給壓縮空氣而清掃錐孔丨丨9。 再者，藉由將複數組軸方向孔141A、141B、徑方向孔 142A、142B、及溝部143，與旋轉轴之圓周方向離間 而設置之複數個流路140，即可將種類不同之流體(例如切 削液、壓縮空氣、潤滑油）同時供給至不同之部位。 依據本實施形態之主軸裝置100,由於在^及第2轴承 部113、114間具有外嵌於旋轉軸112之軸套115，而流體通 129465.doc •27- 200916239 過旋轉軸112之流路140係包括在相互嵌合之旋轉軸ιΐ2之 外周面與軸套115之内周面之間所設之空間，因此不需要 加工困難之小徑且較長貫通孔之加工，流體通過旋轉軸 Π2之流路140即可容易且以低成本進行加工，且成為具有 簡單構成之流路40之廉價者。 (第3實施形態） 接著根據圖7說明本發明之第3實施形態之主軸裝置。另 外，關於與第2實施形態同一部分係賦予同一符號並省略 或簡化說明。 本貝施开> 悲之主軸裝置160係為馬達内建式者，與第j實 施形態同樣，包括：殼體m ;旋轉軸112，其在殼體m 内相對於殼體ill可相對旋轉地配置；配置在殼體lu與旋 轉軸112之間之工具側之複數個（在本實施形態中為4個）第1 軸承部113及相反工具側之複數個（在本實施形態中為2個） 第2軸承部114 ;及軸套115,，其在複數個軸承部113、114 間’外嵌於旋轉軸112之轴方向中間部丨丨2a。 在本實施形態之殼體ill之中間殼體Ulb、與旋轉軸112 之軸方向中間部112a之間係内建有馬達161，而馬達161之 定子162係固定於中間殼體lllb。此外，馬達161之轉子 163係藉由燒嵌而外嵌固定於軸套115，，亦即，軸套ιΐ5，係 構成轉子轴套。 另外，此轉子軸套115,亦與第2實施形態同樣，與形成 於旋轉軸1丨2之溝部143—同構成空間，且作成流體通過旋 轉軸11 2之流路40之一部分。 129465.doc •28- 200916239 此外’在本實施形態中，拉桿130與迴轉接頭121係相互 結合’而從迴轉接頭121所傳送之流體係從拉桿13〇之軸中 心部通過穿孔於徑方向外方之軸孔部1 64而供給至旋轉軸 12之軸方向孔141B。再者，在小徑軸部n2c之内周面係以 在拉桿130移動之際亦供給流體之方式，使具有特定之軸 方向之開口溝1 65形成為與軸方向孔141 B連通。 因此，依據本實施形態之主軸裝置1 6 0，由於係用使用 於馬達内建型者之轉子轴套115，而構成流路14〇，因此不必 增加零件數量，即可容易且以低成本將藉由外嵌馬達161 而於轴方向變長之旋轉軸112之流路140進行加工。 關於其他構成及作用係與第2實施形態者同樣。 另外’本發明並不限定於前述之各實施形態，可進行適 當變形、改良等。 (實施例） 在此’針對將形成於第3實施形態之主軸裝置之流路設 為用以進行工具支承座之密著確認之大氣供給路之情形 下，是否可進行間隙偵測，茲使用圖8及圖9所示之裝置進 行了實驗。 貫驗裝置170係就第3實施形態之主軸裝置16〇之中構成 "丨l路之σ|5刀所構成者’流路1 7 1係藉由拉桿1 7 2、軸17 3、 轉子1 7 4所形成，此等構件係藉由將軸1 7 3固定於安裝托架 (bracket)175來支撐。此外，在軸173之前端係安裝有支承 座丨76，而在支承座176之前方係設有用以推壓支承座丄％ 之夾持構件177。 129465.doc -29- 200916239 再者，如圖9(b)所示，在軸173與支承座176之間，一面 改變板厚（0.010 mm〜0.040 mm)與位相（相對於轴穴為〇度、 45度、90度）一面將寬度5 mm之墊片（shim)178插入，並且 藉由夾持構件177將支承座！ 76以相當於夾持力之荷重壓緊 而設為實際之夾持狀態，以藉由固定在安裝於軸173之磁 鐵架（magnet stand) 1 79之針盤量規（dial gauge)丨8〇來測量實 際間隙量g。 在此狀態下，將通過大氣捕捉感測器（air sensor) 1 8 1 (SMC公司製）之大氣從拉桿丨72之後部供給而進 行了間隙偵測。另外，在本實驗中，係以軸i 73之前端部 之著座用八173a之穴徑（φΑ)為1.5 mm、大氣壓力儀182之 壓力值為0.10 MPa、大氣捕捉感測器181之限度（Hmit)設定 值為0.5來進行。茲將實驗結果顯示於表1。 [表1] 軸 穴徑 大氣壓力 設定值 大氣捕 捉感測 器限度 設定值 墊片厚肩 [:0.010 垫片厚启 1 ： 0.015 墊片厚度：0.020 墊片厚度：0.030 巷·>!厘磨：f) Π40 實際 間隙量 可否 偵測 實際 間隙量 可否 偵測 實際 間隙量 可否 偵測 實際 間陈量 可否 偵測 實際 間隙量 可否 偵測 φΐ.5 0.10 MPa 0.5 0.001 X 0.002 X 0.004 X 0.010 0 0 013 π 0.002 0.004 X X 0.004 0.008 X 0 0.008 卜 0,011· X 0 0.013 0.021 0 〇 h 0.020 0.028 0 0 如表1所示，在上述條件中，得知只要軸i 73與支承座 176之實際間隙量g為〇_〇 1 〇 mm以上則可確實進行間隙偵 測’而確認可充分利用作為工具支承座之密著確認。 另外’本申請係根據2〇〇7年7月24日申請之曰本專利申 請（曰本特願2007-1 92142)、2007年8月7曰申請之曰本專利 申請（曰本特願2007_205385)者，其内容在此作為參照納 129465.doc -30- 200916239 入。 【圖式簡單說明】 圖1係為本發明之第1實施形態之主軸裝置之縱剖面圖。 圖2係為圖1中之迴轉接頭之放大圖。 圖3係為圖1中之由圓A所包圍之部分之放大圖。 圖4係為顯示本發明之旋轉軸與轉子軸套之間之流路之 變形例之剖面圖。 圖5係為用以說明構成複數個流體供給路之主軸裝置之 變形例之剖面圖。 圖6係為本發明之第2實施形態之主軸裝置之縱剖面圖。 圖7係為本發明之第3實施形態之主轴裝置之縱剖面^。 圖8係為用以確認本發明之效果之實驗 θ。 里· ί既阁 圖9(a)係為圖8之軸端部之放大圖，（b)係為 插入位置之圖。 ’、塾片之 圖1 0係為習知主軸裝置之縱剖面圖。 圖11係為習知之另一主軸裝置之縱剖面圖 圖12係為習知之迴轉接頭之縱剖面圖。 【主要元件符號說明】 10 、 100 、 160 11 、 111 12 、 112 13 、 113 14 、 114 15 、 115 主軸裝置 殼體 旋轉軸 第1軸承部（軸承部） 第2軸承部（軸承部） 轉子軸套 129465.doc -31- 200916239 21 迴轉接頭 29 旋轉基部 30 拉桿 30d 小徑孔（第1流體供給路） 30e 孔（第2流體供給路） 40 、 140 流路（第2流體供給路） 44 旋轉連結部 45 第2中心孔（第2流體供給孔） 46 第1中心孔（第1流體供給孔） 46a 非圓形部 47 軸方向貫通孔（第2流體供給孔） 50 緊固機構 51 錐形環 51b 錐面 52 卡環 61 馬達 63 轉子 129465.doc -32-Thereby, the cutting fluid supplied through the fluid supply port 147 of the swivel joint 121, the center hole 145 of the disc member 120, and the fluid distribution hole 146 serves as the axial direction hole 141B of the flow path 140, the radial direction hole 142B, and the groove portion 143. The radial direction hole 142A and the axial direction hole 141A are sequentially passed through, and are ejected to the tool holder 5{) via the cutting fluid flow path i 8b provided in the tool holder 1 8 . Further, the fluid and the specific portion for supplying the fluid are not limited to the cutting fluid and the cutting fluid passage 118b, and may be provided with a radial hole that communicates with the respective bearing portions 113 and 114 from the axial direction holes Mia and 141B (not As shown in the figure, the lubricating oil is supplied through the swivel joint 121 and the disk member 12A to lubricate the bearing portions 113 and 114. Further, a flow path (not shown) that communicates with the tapered hole 119 from the axial direction hole 141 may be provided, and compressed air may be supplied from the rotary joint i2i and the disk member 120 to clean the tapered bore 9. Further, by the plurality of flow paths 140 provided by separating the plurality of array axial direction holes 141A and 141B, the radial direction holes 142A and 142B, and the groove portion 143 from the circumferential direction of the rotation axis, fluids of different types can be used ( For example, cutting fluid, compressed air, and lubricating oil are simultaneously supplied to different parts. According to the spindle device 100 of the present embodiment, since the sleeve 115 is externally fitted to the rotary shaft 112 between the second bearing portions 113 and 114, the fluid passage 129465.doc • 27- 200916239 passes through the rotary shaft 112. The 140 series includes a space provided between the outer peripheral surface of the rotating shaft ι 2 and the inner peripheral surface of the sleeve 115 which are fitted to each other, so that it is not necessary to process a small diameter and a long through hole, and the fluid passes through the rotating shaft Π 2 The flow path 140 can be easily and inexpensively processed, and is inexpensive as a flow path 40 having a simple configuration. (Third Embodiment) Next, a spindle device according to a third embodiment of the present invention will be described with reference to Fig. 7 . In the same manner as in the second embodiment, the same reference numerals will be given to the same parts, and the description will be omitted or simplified. The Becker Spinning Device 160 is a motor built-in type, and includes a casing m and a rotating shaft 112 that is relatively rotatable relative to the casing ill in the casing m, as in the jth embodiment. A plurality of (four in the present embodiment) of the first bearing portion 113 and the opposite tool side (in the present embodiment, 2) disposed on the tool side between the casing lu and the rotating shaft 112. The second bearing portion 114 and the bushing 115 are externally fitted to the axial direction intermediate portion a2a of the rotating shaft 112 between the plurality of bearing portions 113 and 114. A motor 161 is built in between the intermediate casing Ulb of the casing ill of the present embodiment and the axially intermediate portion 112a of the rotating shaft 112, and the stator 162 of the motor 161 is fixed to the intermediate casing 111b. Further, the rotor 163 of the motor 161 is externally fitted and fixed to the boss 115 by the caulking, that is, the boss ι 5, which constitutes the rotor bushing. Further, similarly to the second embodiment, the rotor bushing 115 forms a space with the groove portion 143 formed in the rotating shaft 1丨2, and forms a portion of the flow path 40 through which the fluid passes through the rotating shaft 112. 129465.doc •28- 200916239 In addition, in the present embodiment, the tie rod 130 and the swivel joint 121 are coupled to each other, and the flow system transmitted from the swivel joint 121 passes through the perforation in the radial direction from the shaft center portion of the tie rod 13〇. The shaft hole portion 1 64 is supplied to the axial direction hole 141B of the rotary shaft 12. In the inner peripheral surface of the small-diameter shaft portion n2c, the opening groove 165 having a specific axial direction is formed to communicate with the axial direction hole 141B so that the fluid is supplied while the tie rod 130 is moving. Therefore, according to the spindle device 160 of the present embodiment, since the flow path 14 is formed by the rotor bushing 115 used for the motor built-in type, it is easy and low cost without increasing the number of parts. The flow path 140 of the rotary shaft 112 which is elongated in the axial direction by the external motor 161 is processed. Other configurations and operations are the same as those of the second embodiment. Further, the present invention is not limited to the respective embodiments described above, and appropriate modifications, improvements, and the like can be made. (Embodiment) In the case where the flow path formed in the spindle device of the third embodiment is an air supply path for confirming the adhesion of the tool holder, whether or not the gap detection can be performed is used. The apparatus shown in Figures 8 and 9 was tested. In the spindle device 16 of the third embodiment, the traverse device 170 constitutes a σ 5 路 5 5 5 5 5 5 5 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' 1 1 1 1 1 1 1 1 1 Formed by 174, these members are supported by securing the shaft 173 to a mounting bracket 175. Further, a support base 76 is attached to the front end of the shaft 173, and a holding member 177 for pressing the support base 丄 is provided in front of the support base 176. 129465.doc -29- 200916239 Furthermore, as shown in Fig. 9(b), between the shaft 173 and the support base 176, the plate thickness (0.010 mm to 0.040 mm) and the phase are changed (relative to the axial hole). , 45 degrees, 90 degrees) Insert a shim 178 having a width of 5 mm on one side, and support the holder by the clamping member 177! 76 is pressed to the actual clamping state with a load equivalent to the clamping force, and is fixed by a dial gauge 丨8〇 fixed to a magnet stand 1 79 attached to the shaft 173. To measure the actual gap amount g. In this state, the atmosphere is detected by the atmosphere of the air sensor 1 8 1 (manufactured by SMC Corporation) from the rear of the tie rod 72. In addition, in this experiment, the hole diameter (φΑ) of the eight 173a is 1.5 mm at the front end of the axis i 73, the pressure value of the atmospheric pressure gauge 182 is 0.10 MPa, and the limit of the atmospheric capture sensor 181. (Hmit) The setting value is 0.5. The experimental results are shown in Table 1. [Table 1] Axle hole atmospheric pressure set value Atmospheric capture sensor limit setting value Thick shoulder [[0.010] Thickness of the gasket 1: 0.015 Thickness of the gasket: 0.020 Thickness of the gasket: 0.030 Lane · gt; :f) Π40 Can the actual gap amount be detected? Can the actual gap amount be detected? Can the actual gap amount be detected? Can the actual amount of the gap be detected? Can the actual gap amount be detected? φΐ.5 0.10 MPa 0.5 0.001 X 0.002 X 0.004 X 0.010 0 0 013 π 0.002 0.004 0.004 0.004 0.008 X 0 0.008 Bu 0,011· X 0 0.013 0.021 0 〇h 0.020 0.028 0 0 As shown in Table 1, in the above conditions, the actual gap amount g between the axis i 73 and the support base 176 is known. If 〇 〇 〇 1 〇 mm or more, the gap detection can be surely confirmed, and it is confirmed that the adhesion confirmation as the tool holder can be fully utilized. In addition, 'This application is based on this patent application filed on July 24, 2007 (Sakamoto special wish 2007-1 92142), and August 7th, 2007 application for this patent application (Sakamoto special wish 2007_205385 The content of this is hereby incorporated by reference 129465.doc -30- 200916239. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a spindle device according to a first embodiment of the present invention. Figure 2 is an enlarged view of the swivel joint of Figure 1. Fig. 3 is an enlarged view of a portion surrounded by a circle A in Fig. 1. Fig. 4 is a cross-sectional view showing a modification of the flow path between the rotating shaft and the rotor bushing of the present invention. Fig. 5 is a cross-sectional view showing a modification of the spindle device constituting a plurality of fluid supply paths. Fig. 6 is a longitudinal sectional view showing a spindle device according to a second embodiment of the present invention. Fig. 7 is a longitudinal section of a spindle apparatus according to a third embodiment of the present invention. Fig. 8 is an experiment θ for confirming the effects of the present invention.里· ί 阁 The Fig. 9(a) is an enlarged view of the end of the shaft of Fig. 8, and (b) is a view of the insertion position. Figure 10 is a longitudinal sectional view of a conventional spindle device. Figure 11 is a longitudinal sectional view of another conventional spindle device. Figure 12 is a longitudinal sectional view of a conventional rotary joint. [Description of main component symbols] 10, 100, 160 11 , 111 12 , 112 13 , 113 14 , 114 15 , 115 Spindle unit housing rotating shaft 1st bearing part (bearing part) 2nd bearing part (bearing part) Rotor shaft 129 465 129 129 129 129 Connecting portion 45 Second center hole (second fluid supply hole) 46 First center hole (first fluid supply hole) 46a Non-circular portion 47 Axial direction through hole (second fluid supply hole) 50 Fastening mechanism 51 Conical Ring 51b Conical surface 52 Retaining ring 61 Motor 63 Rotor 129465.doc -32-