200810875 . 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種機台用的加工用頭，更詳細地，涉及 使用於五軸加工機（同時可控制五軸的加工機）或多面加工 機等的複合加工機（機台）的具備轉位機構的加工用頭。 【先前技術】 第4圖係作為上述複合加工機的一例，表示龍門銑床 (machining center「丁 士 Ί χ, L加工中心])1。這種龍門銑床1，包括： 在床4上附設的左右的妇 ο · +， 工石的柱2、2,在柱2、2上朝上下方向 (Z軸方向）移動的橫勅· 、軌b，在杈執6上朝左右方向（γ軸方 向）水平移動的床鞍7;在床鞍7卜翻 你床較/上朝Z軸方向移動的衝柱 (ram)8,在床4上朝前後方向（χ軸方向）移動的工作臺5。 而且，在餘8安裝有，包含具備安U具的 單元20的加工用頭1〇。 ~种 一丨丁吁，逋過根據預弈郑宁 的程式的數值控制，使上工 柱8移動的同時，加工用頭〗6、床鞍7及衝 加工用頭10進行主軸單元2〇 置（旋t位置）的轉位。由此，在上述機台，對於工^各 加工面迠以取佳角度加工工 、 的工件的切削加工等。 可以進行複雜形狀 為此，上述加工用頭具備’將主軸單 轉位用的轉位機構。並且，作 的角度位置 其馬達定子及馬達轉子配置在力 立機構的驅動手段， 達轉子配置在加工用頭⑽㈣ 7109-9045-PF;Tungming 5 200810875 的有’轉+採用肖支撐主轴I元的支撐軸連接的直接驅動 型的驅動馬達(以下’稱為「DD馬達」）的加工用頭(例如， 專利文獻1、2)。 而且，在上述的加工用頭，由於藉由上述數值控制進 行主軸單元20的角度轉位，有檢測主軸單元20的角度位 置（支撐軸的旋轉位置）的必要。因此，加工用頭具備用於 此的鉍轉檢測器（例如，解碼器）係為一般的，此旋轉檢測 态係在加工用頭的殼體内被附設在上述支撐軸，又，上述 加工用頭係具備上述DD馬達以及旋轉檢測器加上，將保持 角度被轉位的主軸單元的位置用的夾緊機構作為必要的構 成且更具備對於主軸單元供給後述的加工用流體用的旋 轉接頭。 然而，在專利文獻1記載的加工用頭（主軸頭）方面， 主j早凡（抢封主軸）係藉由透過上述DD馬達被旋轉驅動 的單k轉軸（第—半頭）被支撐。亦即，在此專利文獻1 的加工用頭，主軸單元的支撐構造係成為懸臂樑式的支 撐（又’在上述的括弧所寫的各部的名稱係為在此專利文 獻被使用的對應的各部的名#，有關下述的專利文獻2的 記載方面也是相同）。 然而，根據此類懸臂樑的支撐構造的情形，由於支撐 剛性低，震動容易發生，藉此，加卫精度降低的問題發生。 因此，代替此類的懸臂樑支撐構造，考慮採用如在專利文 獻2記載的支撐構造。 在此專利文獻2記載的加工用頭（操作頭）中，支撐主 7109-9045-PF;Tungming 6 200810875 軸單元（密封架）的支撐頭（第一支撐部）係具有以失持主軸 單元而被相對配置的支撐部（一對臂），主軸單元係在各支 撐部内，自由旋轉地被支撐，藉由相互使軸心—致，而被 相對配置的-對支撐軸在兩側被支撐。根據此構成的話， 與上述懸臂樑支撐構造的加工用頭相比，由於支持剛性變 高，伴隨著上述般的震動的發生而加卫精度降低的問題係 不會發生。 於阳，在此專利 〜MW "u丄巾峭τ，加工用頭 大型化’伴隨與此，加卫精度降低等的新問題會發生。 亦即，在習知的加工用頭中，如專利文獻J記載的加 用頭也疋如此般，採用與主軸單元的支撐軸對應，⑽馬 2被設置的構成，在專利文獻2記載的加工用頭也成為使 其對應於各支揮軸，# Λ ± 叉存釉在兩支撐部分別設置汕馬達的構成。 此類構成的情形，在加工用頭的上述支撐部内，在用 二自由旋轉：支撐上述⑽馬達以及上述支撐轴的轴承加 銼垃於不仔不攻置上述般的旋轉檢測器、夾緊機構、旋 的尺設計上’㈣在各支撐部的支撐軸的軸線方向 、i欠大又，作為此結果，加工用頭本身會大型化。 右加工用頭為大型介，办丨上 t A 例如，上述龍門銑床的情況， 為了確保其移動領域，a 一 4口本身不得不為大型化或在機台 上的工作空間受限告 $ At 並且，伴隨大型化的重量的增加， 不旎順利地進行力 頭的移動，而帶給工作性壞影響， 或由於加工用頭的會旦 的原因。 里&成橫樑彎曲，加工精度下降等 7109~9045-PF；Tungining 200810875 • [專利文獻1 ]曰本專利公開平2-1 1 6437號公報 [專利文獻2]曰本專利公開平4-2443號公報 【發明内容】 [發明所欲解決之問題] 因此，本發明的課題是提供一種，在於具備轉位機構 的機台用加工用頭，加工用頭本身不會大型化，而能得到 高加工精度的構成。 [解決問題之技術手段] 根據上述課題，本發明之機台用加工用頭的前提是具 備··包含安裝工具的主軸的主軸單元；以及作為支撐該主 軸單7L的支撐頭，包含至少與上述主軸的旋轉軸線直交的 軸線作為中心以旋轉主軸單元，而轉位其角度位置的轉位 機構的支撐頭。 而且，在本發明，其特徵在於，上述支撐頭係包含分 別包含在上述旋轉轴線使軸心一致的狀態被配設、以夾持 上述主軸單元而被相對配置的第一以及第二支撐軸的第一 以及第二支撐部；上述轉位機構係除了在上述支撐頭的殼 體内，包含由在支撐軸周圍被同軸配置並圍繞支撐軸的馬 達轉子及馬達定子而成的驅動馬達，且僅在上述第一以及 第二支撐部的任一方被配置。 並且’在本發明中’上述支撐頭係具備檢測支撐軸的 旋轉位相用的旋轉檢測器，此旋轉檢測器即使在上述第一 以及第二支撐部的上述驅動馬達被設置側的另一方被配設 7109>9045-PF；Tungming 8 200810875 ίΐ::’上述支撐頭係具備保持上述主軸單元的角度位 =緊機構，此夹緊機構即使在上述第一以及第二支擇 、述驅動馬達被設置側的另一方被配設也可。 [發明的效果] 根據由上述本發明的機台用的加工用頭，作為轉位機 。，的動手段被作用的DD馬達係由於僅被内裝在構成支 揮頭的主要部份的第—以及第二支撐部的任—方，在另一 方’只有那部份有充裕的空間。藉此，藉由將其他部材（支 撑，％轉檢測器、夾緊機構、旋轉接頭等）在上述第一以 及第二支撐部的任―個適當地配設，可防止支擇頭（加工用 頭)的大型化，可有效地防止伴隨加工用頭的大型化的上述 問題。 藉由在上述第一以及第二支撐部的DD馬達被配設 側的另—方配設旋轉檢測器及/或炎緊機構，可更容易地實 現防止支撐頭的大型化的旋轉檢測器及/或夹緊機構。 【實施方式】 以下’根據附圖詳細說明本發明的實施方式。 第1〜3圖所不的是本發明的一實施方式，圖示的加工 用頭10係包含，具有安裝工具的主軸21的主軸單元2〇、 支撐主軸單元20的第一支撐頭30(相當於本發明的「支撐 頭」）、支撐第一支撐頭3〇的第二支撐頭5〇(第3圖）。 主軸單元20係為驅動馬達内裝型的主軸頭，是藉由被 内裝的驅動馬達將主軸21高速旋轉驅動。 9 7109-9045-PF；Tungming 200810875 在此主軸單元20的殼向 體2 3内，主軸21被插通配置， 以圍繞此主軸21的方式，驢勒 動馬達2 5被内裝。驅動馬達 25由被外嵌固定於主軸a沾絲2 的轉子25a、以及與此轉子25a 的外周面相對方式被設置的 夏妁疋子25b所構成。主軸2丨係藉 由在驅動馬達25的前後（圖沾 固的上下）夕列配置的軸承（例 如，角接觸軸承）27，而旋鏟έ上仏、木丄 叩焚轉自如地被支撐。並且，若給定 子25b供給激磁電流，則A s — 則在與轉子25a之間發生激磁力， 藉由此激磁力’轉子2 5 a會旌鐘，而士 4丄〇 曰疋轉而主軸21係被旋轉驅動。 苐一支撐頭30是用於，古ρ μ、+、 ^ 、克撐上述主軸皁元20的同時， 以與上述主軸21的旋μ鉍括士丄， 褥軸線直父的軸線（以下，稱為「Α 軸」）為中心旋轉主轴單元20以轉位其角度位置。 此第'一支撑頭3 0構成為，斜於士 a 风馬對於支撐部30c組裝相當於 本發明的第一以及第二支擔立β认 叉稼"卩的一對腳部30a、30b的叉子 形狀，在此腳部30a、30b之間支揮上述的主軸單元2〇。 而且，上述主軸單元2G係藉由在腳部3Qa、_的各個内 部旋轉自如地支撐的一對支撐軸被支撐。 又’在本實施例中的支稽頭（第—支撐頭30)，用於將 主軸單元20旋轉驅動㈣D馬達（相#於本發明的「驅動馬 達」）係為僅設置在上述一對腳部3〇a、3〇b中的一方的腳 部30a(第一支撐部）内的構成。因此，在以下，上述一對 的支撐軸中，將腳部30a側的支撐軸稱為驅動支撐軸，將 腳部30b側的支撐軸稱為從動支撐軸。而且，在本實施例 的支撐頭，後述的旋轉檢測器以Μ緊機構係被配設在與 DD馬達33被配設的腳部3(^為另一方的腳部3〇b(第二支 7109-9045-PF;Tungming 10 200810875 撐部）的内部。 以下，詳細說明有關DD馬達33被配設的腳部3〇a(第 一支撐部）的構成。 腳部30a係以殼體31a作為主體，在其殼體31a的内 4組裝有，構成DD馬達33的轉子（馬達轉子）33a及定子（馬 達定子）33b、支撐主軸單元2〇的驅動支撐軸、用於旋轉自 如地支撐此驅動支撐軸的軸承（例如，交叉滾子軸承）35、 及將加工用的流體（以下僅稱為「流體」）供給至主軸單元 20用的旋轉接頭37等。 殼體31a係為了插入DD馬達33及後述的旋轉軸，腳 部30b側係為大開口。並且，在殼體31a内，形成有從反 腳部30b側的側面到朝a軸方向延伸的圓筒部31al。而且， 在此圓筒部31al，形成有在A軸方向、旋轉接頭37被插 入的貫通孔31a2。又，在殼體31a的反腳部30b側的端面， 形成有後述的流體供給用的管或供給電流用的電纜被通過 的凹部31a3。並且，在腳部3〇a的反腳部3〇b側，安裝有 側面蓋子18a，凹部31a3係藉由此側面蓋子18a被覆蓋。 另外’苐2圖係表示取下此側面蓋子18 &的狀態。 旋轉接頭37係由固定於殼體31a的分配器37a和旋轉 自如地嵌裝在分配器37a的圓筒部37al的外側的軸37b而 構成。 分配器37a係在被插入於殼體31a的貫通孔31a2的狀 態下’在其凸緣部37a2中，藉由配設在圓周方向的多個螺 絲部件37c而被安裝在殼體31a。而且，在分配器37a的 7109-9045-PF;Tungming 11 200810875 中〜形成有用於谷許朝向主軸單元20的電縵等的通過的 貫通孔37a4。 並且，在分配器37a，為了將流體供給或排出的多個 流體流路37a3係向圓周方向偏移位置而被形成。另一方 面，在軸37b，形成有對應於分配器37a的各流體流路37a3 的多個流體流路37bl。另外，在第i圖，多個流體流路37a3 及流體流路37bl，其中只有一個被代表性地表示。 而且，各流體流路37a3和與此對應的各流體流路37bl 被構成為，經由形成在分配器37a和軸37b的嵌合周面的 環狀溝而連通’即使軸m旋轉時也能保持其連通狀能。 又，流體流路37M係連通於主軸單元2〇的流體供給用或 排出用的4 24。而且，在分配器37a和軸37b之間，在各 環狀溝之間介設有密封用的密封部件。 還有，在分配器37a’向圓周方向偏移位置，而形成 有多個流體供給用或排出用的埠37d，在料⑽連接有 流體供給用或排出用的t 12。又，從供給用管12卜的 流體經由埠24從旋轉接頭37被供給到主軸單而且， 在使流體循環時，在主軸單元2Q内循環的流體係經由 接頭广而被排出至排出用fl2。因此，作為朝此主轴單 :被供給的抓體係有，例如，為了將在高速旋轉的卯 馬=25或主軸21冷卻的冷卻用的油、為了防 元2〇(主軸21的旋轉部份） 軸早 尽. 則杨的铋入的密封用的空 耽、為了在加工時冷卻旋轉工具等的冷卻用的水等。 DD馬達33係由對於殼，q 又體31a被固定配設的定子33b、 7109-9045-PF;Tungming 200810875 以及以與定子33b的内周面相對的方式配設的轉子“a所 構成。亦即，圖示的DD馬達33係作為内轉子型的馬達而 被構成。 疋子33b係被内嵌固定在固定於殼體31a的定子套筒 33c的内周面。在此定子套筒33c的外周面，形成有環狀 溝33cl。另一方面，在殼體31a，形成有連通於此環狀溝 33cl的流體供給路31a4及流體排出路31a5。因此，對於 此環狀溝33(：卜從流體供給路31a4供給用於冷卻讪馬達 33的冷卻用流體（例如’油），以抑制伴隨轉子咖的旋轉 的DD馬達33的發熱。另外，環狀溝33ci係形成為使得 從流體供給路31a4被供給的流體在環狀溝Μ。循環而從 流體排出路31 a5被排出般的螺旋狀（省略圖示）。 轉子33“系被外嵌固定於，可旋轉地設置在殼體… 内的旋轉軸32的外周面。此旋轉轴32係對於上述旋轉接 頭37的軸3几、以同心配置在其旋轉軸線上，藉由在圓周 方向被配設的多個螺絲部件而在軸37b被組裝。而且，轉 子^係藉由其外周面與定子33b的内周面相對配置，被 外欲固定在形成於旋轉卓由Μααγι 疋得苹由32的圓筒部32a的外周面，對於 旋轉軸32被設置成不能相對旋轉。 而且，在旋轉軸32，對於其腳部30b側的端面32b， 主軸單元20係藉由在圓周方 万向配設的多個螺絲部件14被 固定。亦即，主軸單元2〇係 1系错由對於旋轉軸32的端面32b 被固定，被支撐在旋轉軸32。因此，在腳部⑽側，旋轉 軸32及與此一體旋轉的旋輕 疋褥接頭37的軸37b係構成主軸 7109-9045-PF;Tungming 13 200810875 單元20用的驅動支撐軸。200810875. Nine, the invention relates to: [Technical Field] The present invention relates to a machining head for a machine, and more particularly to a five-axis machining machine (which can simultaneously control a five-axis machining machine) or multi-face machining A processing head equipped with an indexing mechanism of a compound processing machine (machine) such as a machine. [Prior Art] Fig. 4 shows an example of the above-described multi-tasking machine, which is a milling machine (machining center "D-machining center") 1. This type of portal milling machine 1 includes: left and right attached to the bed 4 The οο · +, the columns 2 and 2 of the work stone, the traverse and the rail b which move in the vertical direction (Z-axis direction) on the columns 2 and 2, and the left and right directions (the γ-axis direction) on the 杈6 a bed saddle 7 that moves horizontally; a table 5 that moves in the bed saddle 7 on the bed/upward in the Z-axis direction, and a table 5 that moves on the bed 4 in the front-rear direction (the x-axis direction). It is installed in the remaining 8 and includes the processing head 1 of the unit 20 having the U-shaped device. ~ One kind of Ding Ding, and the numerical control of the program according to the game of Zheng Ning, so that the upper work column 8 moves while The machining head 6 and the saddle 7 and the punching head 10 perform indexing of the spindle unit 2 (rotation t position). Therefore, in the above machine, the machining surface is optimally angled. Machining of workpieces, workpieces, etc. It is possible to carry out complex shapes. For this purpose, the above-mentioned machining head has an indexing position for single-spinning of the spindle. And, the angular position of the motor stator and the motor rotor are arranged in the driving mechanism of the force vertical mechanism, and the rotor is disposed in the processing head (10) (4) 7109-9045-PF; Tungming 5 200810875 has the 'turn + adopts the Xiao support spindle I A processing head of a direct drive type drive motor (hereinafter referred to as "DD motor") in which a support shaft is connected (for example, Patent Documents 1 and 2). Further, in the above-described machining head, since the angular displacement of the spindle unit 20 is performed by the above numerical control, it is necessary to detect the angular position of the spindle unit 20 (the rotational position of the support shaft). Therefore, the processing head is provided with a twist detector (for example, a decoder) for use in this case, and the rotation detecting state is attached to the support shaft in the casing of the machining head, and the above-mentioned processing is used. The head system includes the DD motor and the rotation detector, and a clamping mechanism for maintaining the position of the spindle unit in which the angle is indexed is required as a configuration, and further includes a rotary joint for supplying a machining fluid to be described later to the spindle unit. However, in the machining head (spindle head) described in Patent Document 1, the main j (the main shaft) is supported by a single k-rotor (the first half) that is rotationally driven by the DD motor. In other words, in the processing head of Patent Document 1, the support structure of the spindle unit is a cantilever type support (the name of each part written in the above-mentioned brackets is the corresponding part used in this patent document). The name # is the same in the description of the following Patent Document 2. However, according to the support structure of such a cantilever beam, since the support rigidity is low, vibration is likely to occur, whereby the problem of reduced precision of the reinforcement occurs. Therefore, instead of such a cantilever beam supporting structure, a supporting structure as described in Patent Document 2 is considered. In the machining head (operation head) described in Patent Document 2, the main 7109-9045-PF is supported; the support head (first support portion) of the shaft unit (seal holder) of Tungming 6 200810875 has a spindle unit that is lost. The oppositely disposed support portions (a pair of arms) are rotatably supported in the respective support portions, and the oppositely disposed pair of support shafts are supported on both sides by mutually axially aligning the shaft centers. According to this configuration, the support rigidity is higher than that of the machining head of the cantilever beam supporting structure, and the problem that the precision of the jerk is lowered due to the occurrence of the above-described vibration is not caused. Yu Yang, in this patent ~ MW " u 丄 峭 τ, the processing head is large, accompanied by this, new problems such as reduced precision. In other words, in the conventional processing head, the processing head described in Patent Document J is similar to the support shaft of the spindle unit, and (10) the configuration in which the horse 2 is provided, and the processing described in Patent Document 2 is employed. The head is also configured to correspond to each of the support shafts, and the # Λ ± fork glaze is provided with a 汕 motor in each of the support portions. In the case of such a configuration, in the support portion of the machining head, the rotation of the bearing (10) and the bearing of the support shaft is performed by two free rotations, and the rotation detector and the clamping mechanism are not used. In the design of the rotary ruler, (4) in the axial direction of the support shaft of each support portion, i is too large, and as a result, the machining head itself is enlarged. The right processing head is a large-scale medium. For example, in the case of the above-mentioned portal milling machine, in order to ensure its mobile field, a 4 port itself has to be limited for the large-scale or the working space on the machine. Further, with the increase in the weight of the enlargement, the movement of the force head is not smoothly performed, but the workability is badly affected, or the processing head is used for the reason. In the case of the beam, the beam is bent, the machining accuracy is lowered, and the like, and the processing accuracy is lowered, and the like is the same as that of the Japanese Patent Publication No. 2-11-6437. [Invention] [Problems to be Solved by the Invention] Therefore, an object of the present invention is to provide a processing head for a machine having an indexing mechanism, and the processing head itself can be made large without being enlarged. The composition of the machining accuracy. [Technical means for solving the problem] According to the above-described problem, the machine head for machining according to the present invention is provided with a spindle unit including a spindle for mounting a tool, and a support head for supporting the spindle unit 7L, including at least the above The axis orthogonal to the axis of rotation of the main shaft serves as a center to rotate the spindle unit, and the support head of the indexing mechanism whose position is indexed. Further, according to the present invention, the support head includes first and second support shafts that are disposed to be opposed to each other in a state in which the rotation axes are aligned with each other to sandwich the spindle unit. The first and second support portions; the indexing mechanism includes a drive motor including a motor rotor and a motor stator coaxially disposed around the support shaft and surrounding the support shaft, in addition to the housing of the support head, and It is disposed only on one of the first and second support portions described above. Further, in the present invention, the support head includes a rotation detector for detecting a rotational phase of the support shaft, and the rotation detector is provided on the other side of the first and second support portions on which the drive motor is disposed. 7109>9045-PF; Tungming 8 200810875 ΐ:: 'The above-mentioned support head is provided with an angular position for holding the above-mentioned spindle unit = a tightening mechanism which is set even in the above-mentioned first and second selection and description of the drive motor The other side of the side is also available. [Effects of the Invention] The processing head for the machine of the present invention described above is used as an indexing machine. The DD motor to which the moving means is applied is only contained in the first part constituting the main part of the fulcrum head and the arbitrarily side of the second supporting portion, and only the portion in the other side has ample space. Thereby, the other parts (support, % rotation detector, clamping mechanism, rotary joint, etc.) can be appropriately disposed in any of the first and second support portions, thereby preventing the cutting head (for processing) The enlargement of the head) can effectively prevent the above-mentioned problems associated with an increase in the size of the processing head. By arranging the rotation detector and/or the squeezing mechanism on the side where the DD motor of the first and second support portions are disposed, the rotation detector for preventing the size of the support head from being increased can be more easily realized. / or clamping mechanism. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 3 are an embodiment of the present invention, and the illustrated machining head 10 includes a spindle unit 2A having a spindle 21 on which a tool is mounted, and a first support head 30 supporting the spindle unit 20 (equivalent to In the "support head" of the present invention, the second support head 5'' supporting the first support head 3' (Fig. 3). The spindle unit 20 is a spindle head that drives a motor built-in type, and the spindle 21 is rotationally driven at a high speed by a built-in drive motor. 9 7109-9045-PF; Tungming 200810875 In the housing body 2 of the spindle unit 20, the spindle 21 is inserted and disposed to surround the spindle 21, and the motor 24 is internally mounted. The drive motor 25 is composed of a rotor 25a that is externally fixed to the main shaft a smear 2, and a summer scorpion 25b that is disposed to face the outer peripheral surface of the rotor 25a. The main shaft 2 is supported by a bearing (e.g., an angular contact bearing) 27 disposed on the front and rear of the drive motor 25 (the upper and lower sides of the drawing), and the shovel and the raft are freely supported. Further, when the exciting current is supplied to the stator 25b, A s - then an exciting force is generated between the rotor 25a and the rotor 25a, whereby the exciting force 'the rotor 2 5 a will slam the clock, and the rotor 4 turns to the main shaft 21 It is driven by rotation. The first support head 30 is used for the ρ μ, +, ^, gram support of the above-mentioned spindle soap element 20, and the axis of the spindle 21 is enclosed by the axis of the spindle, and the axis of the 直 axis is straight (hereinafter, The spindle unit 20 is rotated about the "Α axis" to center its angular position. The first support head 30 is configured such that the pair of feet 30a, 30b corresponding to the first and second support members of the present invention are assembled to the support portion 30c. In the shape of a fork, the above-described spindle unit 2 is supported between the legs 30a, 30b. Further, the spindle unit 2G is supported by a pair of support shafts rotatably supported in the respective inner portions of the leg portions 3Qa and _. Further, in the present embodiment, the branch head (the first support head 30) is used to rotationally drive the spindle unit 20 (four) D motor (phase "the "drive motor" of the present invention) is provided only on the pair of feet described above. The configuration in the leg portion 30a (first support portion) of one of the portions 3A and 3B. Therefore, in the pair of support shafts described below, the support shaft on the leg portion 30a side is referred to as a drive support shaft, and the support shaft on the leg portion 30b side is referred to as a follower support shaft. Further, in the support head of the present embodiment, a rotation detector to be described later is disposed on the leg portion 3 that is disposed with the DD motor 33 by a tightening mechanism (^ is the other leg portion 3〇b (second branch) 7109-9045-PF; Tungming 10 200810875 The inside of the support portion. Hereinafter, the configuration of the leg portion 3a (first support portion) in which the DD motor 33 is disposed will be described in detail. The leg portion 30a is formed by the housing 31a. The main body is assembled in the inner portion 4 of the casing 31a, and constitutes a rotor (motor rotor) 33a and a stator (motor stator) 33b constituting the DD motor 33, a drive support shaft that supports the spindle unit 2, and rotatably supports the drive. A bearing for supporting the shaft (for example, a cross roller bearing) 35 and a fluid for processing (hereinafter simply referred to as "fluid") are supplied to the rotary joint 37 for the spindle unit 20, etc. The housing 31a is for inserting the DD motor 33. The rotation shaft described later has a large opening on the side of the leg portion 30b. Further, in the casing 31a, a cylindrical portion 31a1 extending from the side surface on the side of the opposite leg portion 30b to the a-axis direction is formed. The tubular portion 31a1 is formed to be inserted in the A-axis direction and the rotary joint 37 is inserted. In the end surface on the side of the back leg portion 30b of the casing 31a, a tube for supplying a fluid to be described later or a recessed portion 31a3 through which a cable for supplying current is passed is formed. Further, the leg portion 31a3 of the leg portion 3a is formed. On the 3〇b side, a side cover 18a is attached, and the recess 31a3 is covered by the side cover 18a. The '苐2 picture shows the state in which the side cover 18 & is removed. The rotary joint 37 is fixed to the housing. The distributor 37a of the 31a is rotatably fitted to the shaft 37b outside the cylindrical portion 37al of the distributor 37a. The distributor 37a is in the state of being inserted into the through hole 31a2 of the casing 31a. The edge portion 37a2 is attached to the casing 31a by a plurality of screw members 37c disposed in the circumferential direction. Further, in the distributors 37a, 7109-9045-PF; Tungming 11 200810875, The through hole 37a4 through which the electric power of the spindle unit 20 passes, etc., is formed in the distributor 37a in order to shift the position of the plurality of fluid flow paths 37a3 for supplying or discharging the fluid in the circumferential direction. The shaft 37b is formed with each corresponding to the dispenser 37a a plurality of fluid flow paths 37b1 of the fluid flow path 37a3. Further, in Fig. i, only one of the plurality of fluid flow paths 37a3 and the fluid flow paths 37b1 is representatively represented. Further, each of the fluid flow paths 37a3 and Each of the corresponding fluid flow paths 37b1 is configured to communicate via an annular groove formed on the fitting circumferential surface of the distributor 37a and the shaft 37b. Even when the shaft m is rotated, the communication energy can be maintained. Further, the fluid flow path is provided. The 37M is connected to the spindle unit 2 for fluid supply or discharge 4 24 . Further, between the distributor 37a and the shaft 37b, a sealing member for sealing is interposed between the annular grooves. Further, the distributor 37a' is displaced in the circumferential direction to form a plurality of crucibles 37d for fluid supply or discharge, and t12 for fluid supply or discharge is connected to the material (10). Further, the fluid from the supply pipe 12 is supplied from the rotary joint 37 to the spindle unit via the crucible 24, and when the fluid is circulated, the flow system circulating in the spindle unit 2Q is discharged to the discharge fl2 via the joint. Therefore, as the gripping system to be supplied to the main spindle, for example, the cooling oil for cooling the Hummer=25 or the main shaft 21 which rotates at a high speed, and the anti-element 2 (the rotating portion of the main shaft 21) The shaft is used as it is. The air for sealing of the smashing of the squirrel is used, and the water for cooling such as a rotary tool is cooled during processing. The DD motor 33 is composed of a stator 33b, 7109-9045-PF, which is fixedly disposed to the casing, and a body 31a; Tungming 200810875; and a rotor "a" disposed to face the inner circumferential surface of the stator 33b. That is, the illustrated DD motor 33 is configured as an inner rotor type motor. The latch 33b is fitted and fixed to the inner circumferential surface of the stator sleeve 33c fixed to the casing 31a. Here, the stator sleeve 33c is On the outer peripheral surface, an annular groove 33cl is formed. On the other hand, a fluid supply path 31a4 and a fluid discharge path 31a5 that communicate with the annular groove 33cl are formed in the casing 31a. Therefore, the annular groove 33 is formed. The cooling fluid (for example, 'oil) for cooling the crucible motor 33 is supplied from the fluid supply path 31a4 to suppress heat generation of the DD motor 33 accompanying the rotation of the rotor coffee. Further, the annular groove 33ci is formed so as to be supplied from the fluid. The fluid to be supplied to the 31a4 is in the annular groove, and is circulated and discharged from the fluid discharge path 31a5 in a spiral shape (not shown). The rotor 33 is "embedded and fixed" and rotatably provided in the casing... The outer peripheral surface of the rotating shaft 32. This rotating shaft 32 is for The shafts 3 of the rotary joint 37 are arranged concentrically on the rotation axis thereof, and are assembled on the shaft 37b by a plurality of screw members arranged in the circumferential direction. Moreover, the rotor is fixed by the outer peripheral surface thereof and the stator. The inner peripheral surface of the 33b is disposed opposite to each other, and is externally fixed to the outer peripheral surface of the cylindrical portion 32a formed on the rotary shaft 32, and is provided so as not to be rotatable relative to the rotary shaft 32. Further, the rotary shaft 32 is provided. For the end surface 32b on the side of the leg portion 30b, the spindle unit 20 is fixed by a plurality of screw members 14 disposed in the circumferential direction. That is, the spindle unit 2 is twisted by the shaft 32. The end surface 32b is fixed and supported by the rotating shaft 32. Therefore, on the side of the leg portion (10), the rotating shaft 32 and the shaft 37b of the rotary tap fitting 37 integrally rotating therewith constitute the main shaft 7109-9045-PF; Tungming 13 200810875 The drive for unit 20 supports the shaft.
Wa旋轉自如地被支撐的狀態。因此，藉由這些構成，上 述的驅動支撐軸（旋轉接頭37的軸37b +被組裝於軸37b的 旋轉軸32)係，對於殼體31a旋轉自如地被支撐，且藉由 DD馬達33被旋轉驅動。 上述旋轉軸32的圓筒部32a係，在組裝旋轉轴32在 方疋轉接頭37的軸37b的狀態下，經由微小的間隙而圍繞上 述殼體31a的圓筒部31al般被形成，在其外周面嵌^有 DD馬達33的轉子33a。另一方面’在殼體3U的圓筒部 31 a 1和位於此圓筒部3丨a丨的貫通孔3丨&内的轴3之間 介設有軸承35。又，藉由此軸承35,軸37b成為對於殼體 接著，以下對於在與腳部30a相對位置支撐主軸單元 20的腳部30b(第二支撐部)的構成，進行詳細說明。 腳部3 Gb係以殼體31b為主冑，在其内部組裝有，保 持主軸單兀20的角度位置的夾緊機冑34、支撐主轴單元 的從動支撐軸、用於將此從動支撐軸旋轉自如地支樓的 軸承36、及旋轉接頭38等。 殼體31b係形成有在A軸方向貫通的貫通孔仙卜在 其貫通孔sm内組裝有上述爽緊機構34、從動支撐轴、 m及旋轉接頭38。而且，在殼體训的反腳部編 侧的端面’與腳部30a同樣地形成有凹部(省略圖示），其 係藉由側面蓋子l8b而被覆蓋。 旋轉接頭38係為與腳部 旋轉接頭，藉由被固定於殼體 30a側的旋轉接頭37同樣的 31b的分配器38a、以及在 7109-9045-PF/Tungming 14 200810875 -r a的圓筒部38al的外側旋轉自如地被 38b所構成。 分配器38a係由上述圓筒部38ai、以及在圓筒部㈣ 的反腳部30a側的姓# a # & + , σ σ半厶方向擴大的方式被形成的凸 緣部咖2所構成。並且，分配器38a係在此凸緣部38a2 中，猎由在圓周方向配設的多個螺絲部件38〇，被 殼體31b。而且，在分配 、 社刀配态38a的中心，形成有在A軸方 向貫通的貫通孔38a4。 在此分配器38a，在圓周方向偏移位置，多個流體流 路38a3係被形成。又，在轴3处，形成有對應於分配器. 的各流體流路38a3的多個流體流路38bl。而且，各流體 流路和與此對應的各流體流路38b"皮構成為，經由 在分配器38a和軸38b的嵌合周面被形成的環狀溝而連 通，即使軸38b旋轉時也能保持其連通狀態。 3〇b巾’對應於腳部3〇a的旋轉轴32的旋轉軸 39係’為了收容軸承36，由軸部件39a和凸緣部件㈣的 兩個部件所構成。此旋轉軸39(軸部件39a及凸緣部件抓） 係，被配設為其旋轉軸線與腳部3〇a的旋轉軸犯的旋轉軸 線（=A軸）一致的方式。 旋轉軸39的軸部件39a係被配置在分配器的貫通 孔38a4内，對於分配器38a，經由軸承％而旋轉自如地 被支撐。因此，軸部件39a和分配器38a係成為，關於A 軸以同心被配設的狀態。 而且，凸緣部件39b係具有在腳部30a側與腳部3〇a 7109-9045-PF;Tungming 15 200810875 中的旋轉軸32的端面32b平行的端面39bl，對於此端面 3 9 b 1 ’藉由在圓周方向被配設的多個螺絲部件1 5，主軸單 元2 〇係被固定。因此，此旋轉轴3 9係作為腳部3 〇 b中的 主軸單元2 0用的從動支樓軸的功能。另外，旋轉軸3 g係 在凸緣部件39b中，被固定於旋轉接頭38的軸38b，與軸 體地》疋轉。因此’旋轉接頭3 8的軸3 8 b也相當於從 動支撐軸的一部分。 用於保持主軸單元20的旋轉位置（角度位置）的夾緊 機構34係主要由夾緊套筒34a所構成。夾緊套筒34a係由 成為壓力室的環狀溝34al形成的圓筒部34a2、以及在此 圓筒部34a2的腳部30a側的端部以在半徑方向擴大的方式 /成的凸、、、彖邛34a3所構成。圓筒部34a2係在容許軸38b 轉的狀心下，將與旋轉軸3 9 一體旋轉的旋轉接頭3 8的 軸38b圍繞。 有環狀的受壓部件34b。The state in which the Wa is rotatably supported. Therefore, with these configurations, the above-described drive support shaft (the shaft 37b + of the rotary joint 37 is assembled to the rotary shaft 32 of the shaft 37b) is rotatably supported by the housing 31a, and is rotated by the DD motor 33. drive. The cylindrical portion 32a of the rotating shaft 32 is formed around the cylindrical portion 31a of the casing 31a via a minute gap in a state in which the rotating shaft 32 is assembled to the shaft 37b of the square joint 37. A rotor 33a of the DD motor 33 is fitted to the outer peripheral surface thereof. On the other hand, a bearing 35 is interposed between the cylindrical portion 31 a 1 of the casing 3U and the shaft 3 in the through hole 3 丨 & Further, the shaft 37b serves as the housing by the bearing 35. Next, the configuration of the leg portion 30b (second support portion) for supporting the spindle unit 20 at a position opposite to the leg portion 30a will be described in detail. The leg portion 3Gb is mainly composed of a housing 31b, and a clamping device 34 for holding the angular position of the spindle unit 20 and a driven support shaft for supporting the spindle unit are incorporated therein for the driven support. The bearing 36 of the branch building and the rotary joint 38 are freely rotatable. The casing 31b is formed with a through hole penetrating in the A-axis direction. The above-described tightening mechanism 34, the driven support shaft, m, and the rotary joint 38 are assembled in the through hole sm. Further, a concave portion (not shown) is formed in the end surface of the housing on the side of the back leg portion, and is covered by the side cover 18b. The rotary joint 38 is a distributor 38a of the same 31b as the rotary joint 37 fixed to the housing 30a side, and a cylindrical portion 38al of 7109-9045-PF/Tungming 14 200810875-ra. The outer side is rotatably formed by 38b. The distributor 38a is composed of the above-described cylindrical portion 38ai and a flange portion 2 formed on the side of the reverse leg portion 30a of the cylindrical portion (four), which is formed by the extension of the last name # a # & + , σ σ half-turn direction . Further, the distributor 38a is housed in the flange portion 38a2, and is housed by a plurality of screw members 38, which are disposed in the circumferential direction, by the casing 31b. Further, a through hole 38a4 penetrating in the A-axis direction is formed at the center of the distribution and the social knife arrangement 38a. In this distributor 38a, a plurality of fluid flow paths 38a3 are formed at positions shifted in the circumferential direction. Further, at the shaft 3, a plurality of fluid flow paths 38b1 corresponding to the respective fluid flow paths 38a3 of the dispenser are formed. Further, each of the fluid flow paths and the respective fluid flow paths 38b and the skin are configured to communicate via an annular groove formed on the fitting circumferential surface of the distributor 38a and the shaft 38b, even when the shaft 38b is rotated. Keep it connected. The 〇b towel ′ corresponds to the rotation shaft 39 of the rotation shaft 32 of the leg portion 3〇a. In order to accommodate the bearing 36, it is composed of two members of the shaft member 39a and the flange member (four). The rotating shaft 39 (the shaft member 39a and the flange member catching) is arranged such that the rotation axis thereof coincides with the rotation axis (= A axis) of the rotation axis of the leg portion 3a. The shaft member 39a of the rotary shaft 39 is disposed in the through hole 38a4 of the distributor, and is rotatably supported by the distributor 38a via the bearing %. Therefore, the shaft member 39a and the distributor 38a are in a state of being arranged concentrically with respect to the A-axis. Further, the flange member 39b has an end face 39b1 which is parallel to the end face 32b of the rotary shaft 32 in the leg portion 3a side and the leg portion 3a 7109-9045-PF; Tungming 15 200810875, for which the end face 3 9 b 1 ' The spindle unit 2 is fixed by a plurality of screw members 15 arranged in the circumferential direction. Therefore, this rotary shaft 39 functions as a driven fulcrum shaft for the spindle unit 20 in the leg portion 3 〇 b. Further, the rotating shaft 3g is fixed to the shaft 38b of the rotary joint 38 in the flange member 39b, and is pivoted with the shaft. Therefore, the shaft 3 8 b of the rotary joint 38 also corresponds to a portion of the driven support shaft. The clamping mechanism 34 for maintaining the rotational position (angular position) of the spindle unit 20 is mainly constituted by the clamping sleeve 34a. The clamp sleeve 34a is a cylindrical portion 34a2 formed by the annular groove 34al serving as the pressure chamber, and a convex portion that is enlarged in the radial direction at the end portion of the cylindrical portion 34a2 on the leg portion 30a side.彖邛34a3 is composed. The cylindrical portion 34a2 surrounds the shaft 38b of the rotary joint 38 that rotates integrally with the rotary shaft 39 under the center of the allowable rotation of the shaft 38b. There is an annular pressure receiving member 34b.
在夹緊套筒34a的圓筒部34a2和殼體31b之間，介設 3lbl内嵌固宏古总薇、^ ，在殼體31b的貫通孔 卜34b ’而且，在此受壓部件34b 套筒34的圓筒部34a2。並且， 酵入的螺絲部件，夾緊套筒34係 受壓部件34b係對於凸緣部34a3 對於圓筒部34a2，形成有在 :34al，由此環狀溝34al和 壓力室。還有，在受壓部件 7l〇9-9045-PF;Tungining 16 200810875 34b所形成的流體流路34bl係連通在此壓力室。此流體流 路34bl係經由在夾緊套筒3“的凸緣部34a3所形成的流 體流路34a4,連通於在殼體31b所形成的流體流路3ib2。 而且，在此夾緊機構34，藉由經由這些流體流路，壓 力流體（例如，壓油）被供給至壓力室，對應於夾緊套筒3切 的圓筒部34a2的環狀溝34al的薄肉部係在縮徑方向變 形。其結果，對於軸38b向縮徑方向締緊力係起作用，軸 38b及組裝於此的旋轉軸39的旋轉成為被阻止的狀態（夾 緊狀態）。並且，藉由停止壓力流體供給至壓力室，而消除 圓筒部34a2的薄肉部的變形狀態，對於軸38a的締緊力係 消失而解除夾緊狀態。 還有，在圖示例，在腳部30b内設置有，為了檢測旋 轉軸39的旋轉角度(=主軸單元2〇的角度位置)的旋轉檢測 器41及為了限制主軸單元2〇的旋轉範圍的角度檢測器仏。 旋轉檢測器41係，由在旋轉接頭38的分配器3心的 貫通孔38“内，安裝於從貫通孔38“的内周面在半二方 向突出的圓盤狀的支揮部的所定位置的—對檢測：頭 41a、41a 1及在檢測器頭41a、仏内側相對配置而被安 裝於旋轉軸39的軸部件39a的檢測環41b所構成缺 本發明中的旋轉檢測器係不限於此構成的物n， 的物件也可。 〃他省知 又，來自此旋轉檢測器41的主轴單 早70 Μ的角度位置 的檢測信號係，被發送到裝載有本發 J刀17工用頭1 0的機 台的控制裝置（未圖示），而被使用於主輛 早兀2 0的旋轉控 7109-9045-PF;Tungming 17 200810875 制（數值控制）。 並且角度檢測器4 2係，例如為限位開關，安妒於在 分配器38a的貫通孔38a4内設置的支撐板上，與被安裝在 旋轉軸39的端部的圓盤狀的部件43的周面相對般被設 置。在此部件43的周面，形成有對應於容許角度範圍又“ 轉具，在相對於此牵轉具的狀態下，限位開關42處於不作 動的狀態。因此，藉由控制的異常等，主軸單元^旋轉在 容許角度以上時，其藉由限位開關42而被檢測，其檢測信 號，例如，作為非常停止信號發送到機台的控制裝置。 以下，對於圖示的加工用頭1〇的第二支撐頭，進 行詳細說明。 如上述，在於本實施例的加工用頭1〇係，除上述說明 的第—支揮頭30外’具備支撑此第一支揮頭3〇的第二支 撐頭50。並且’第—支撐頭3()係經由第二支撐頭π而支 撐在機台的主軸頭等。此第二支撐頭5〇係為了使第一支撐 碩30「以錯直方向的軸線（與機台的ζ軸平行的轴線/以下， 、’為C軸」）作為中心旋轉驅動而被設置（第3圖）。 弟二支撐頭50係以具有向C軸方向貫通的貫通孔… :殼體51為主體，具備軸部52a在貫通孔W内被配設的 :轉軸52。而且，經由此旋轉轴52對第二支撐頭5〇組裝 n支撐碩30。亚且’第二支撑頭5〇係經由在殼體被 女政的環狀的支撐體51a，而在機台的主軸頭等被安裝。 ,、第二支撐頭50係在殼體51的貫通孔51a内具備：卯 ’、、達53，為了將旋轉軸52旋轉驅動；夹緊套筒54，為了 7109- 9〇45~pF；Tungming 18 200810875 :Γ:轉軸52的旋轉位置；以及旋轉接頭55，為了將流 體七、而到第一支撐頭30。 二馬達53係由：經由定子㈣53c而被固定在殼體 a 3a，以及與疋子53a的内周面相對配置，被固 ^旋轉軸52的轉子53b所構成。…用以驅動汕馬 的激磁電流的供給係’藉由經由連接器工〜而被連接 在汕馬達53的電纜17而被進行。 疑轉軸52係包含：可旋轉地設置於殼體51的貫通孔 a内的轴部件52a;以及安裝於軸部件… =1 端部而向半徑方向（與C轴直交的方向）擴大的凸緣 的貫通孔。i且，在旋轉軸…形成有旋轉接頭55被插通 部件另：在圖示例中’在旋轉軸52的軸部件他和凸緣 之間开》成有軸承殼體52d。@ jt- vl· ^ -z 52d ,, 而且，在此軸承殼體 52 ΐΓΛ間介設轴承56,藉由該轴承56,旋轉抽 、又_ 51成為旋轉自如地被支撐的狀態。因此，在 =例的轴承56係為複合滾子型式的擺動轴承的—個的 轴承(三列滾子輛承/轴向·徑向滾筒轴承)， 了此曰又到軸向方向及徑向方向的大荷重。 子53ΓΓ件523的外周面’外嵌固定有dd馬達53的轉 :2 _+53^旋轉^^為中心旋轉驅動車由 以個蟫^並且，凸緣部件挪係藉由在圓周方向被配設 一部件52e而被組裝在軸部件52a，與軸部件52a 體地叙轉。還有，在凸緣部件52b，在圓周方向螺合插 7109-9045-PF；Tungming 19 200810875 入多個螺絲料19 ’藉由此螺絲部件19,第一支撐頭3〇 的支撐部30c係被組裝於凸緣料⑽。因此，藉由旋轉 軸52係由DD馬達53被旋轉驅動，從而 係與旋轉軸52 一起旋轉。 文梡頭3° 方疋轉接頭55係為與第-支撐頭3〇的旋轉接頭打、μ 同樣的旋轉接頭，由被固定於殼體51的分配器…、以及 以可紋轉地被嵌裝在分配器55a所形成的貫通孔卜且 對於c、轴和分配器55a同心地被配設的軸咖所構成。 分配器55a係由在旋轉軸52的貫通孔52c内被配置的 圓筒部55a2、以及在圓筒部55a2的相反側的第一支撐頭 3〇側的端部在半徑方向擴大的方式形成的凸緣部如所 構成’在此凸緣部55a3中，藉由在圓周方向配設的多個螺 絲部件而組裝在殼體5 1。 而且，在軸55b，在第一支撐頭3〇側的端部，圓盤狀 的凸緣部件57係被組裝，軸55b係經由此凸緣部件57而 對於旋轉軸52的凸緣部件52b被組裝。因此，伴隨旋轉轴 52的旋轉，軸55b也一起旋轉。另外，凸緣部件57係成 為嵌入於在第一支撐頭3〇的支撐部3〇c所形成的圓形的凹 部3〇cl的形狀，藉由此凸緣部件57和支撐部3〇c的凹部 3〇Cl，進仃組裝第一支撐頭30和第二支撐頭50時的定位。 在分配器55a，在圓周方向偏移位置形成多個為了從 外部引進流體的流體流路55a4。另一方面，在軸55b，也 在圓周方向偏移位置形成對應於分配器55a的各流體流路 55a4的多個流體流路55b 1。 7109-9045-PF;Tungming 20 200810875 並且，各流體流路55a4與對應其的各流體流路55bl 係被構成為，經由在分配器55a和軸55b的嵌合周面形成 的環狀溝而連通，在軸55b旋轉時，也保持其連通狀態。 並且’在軸55b形成的多個流體流路55bl，係分別連通於 在第一支撐頭30的旋轉接頭37或38的分配器37a、38a 所形成的對應的流體流路37a3或38a3。因此，從外部供 給到旋轉接頭55的分配器55a的流體係，經由軸55b被供 給到第一支撐頭30的旋轉接頭37、38。 在被固定於殼體51的分配器55a和旋轉軸52的軸部 件52a之間，設置有為了保持旋轉軸52的旋轉位置的夾緊 套筒54。此夾緊套筒54係在其凸緣部5化，藉由多個螺絲 部件而組裝在分配器55a的同時，設置成容許與旋轉軸Μ 的相對旋轉。而且，在夾緊套筒54的圓筒部5扑，形成有 在分配器55a的圓筒部55a2側開口的環狀溝5杬，藉由此 環狀溝54c和分配器55a的圓筒部55a2的外周自而形成壓 力室。 -的DM形成的 ^體流路54d而供給壓力流體，對岸於圓 、 版耵應& W疴部54b的環狀 溝54c的薄肉部係在擴徑方向變形。苴姓 文v ，、、、、〇果，對於旋轉軸 52施匕加擴徑方向的締緊力，旋轉軸52的旋轉成為被阻止 的狀恶（夾緊狀態）。 而且’在圖示例’在旋轉接頭55的上端部，設置 了檢測旋轉軸52的旋轉量，亦即，第—支撐頭^的旋轉 量的旋轉檢測H 44。此旋轉檢測器44係由在分配器疋心 7109-9045-PF/Tungming 21 200810875 上的所定位置被配置的一對檢測器頭44a、44a;以及與此 檢測器頭44a、4杜*日剩 4相對配置，安裝在與旋轉軸52 —起旋 一 〃 5b的才欢/則玉衣44b所構成。此旋轉檢測器44的檢測 ^ 5虎係’與在第―支撐頭3G的旋轉檢測器41同樣地被發 、丨機口的控制裝置’並用於第一支撐頭3。的旋轉控制。 -在由以上構成而成的加卫用頭10中，為了支樓主軸單 70 20的支撐頭(第-支撐頭3〇)係’在-對腳部30a、30b 的各支撐軸夾人主軸單元2()的狀態，對於兩支撐軸以不能 目對旋轉的方式固定支撐。並且，主軸單元20係，腳部 3〇a側的驅動支撐軸係通過藉由⑽馬達⑽而被旋轉驅動， ^支撐軸的旋轉軸線（=與主軸21的旋轉軸線直交的轴線 /A軸)為中心朝向希望的角度位置被旋轉驅動。 DD馬達33的驅動係，按照基於預先被設定的程式的 數值控制而被進行，藉由缠羊 ΛΑ # μ 古俨紅 猎由轉子33a的旋轉控制，經由驅動 支撐軸而控制主軸單元2〇的角度位置。因此，在圖示例， =腳部心内的DD馬達33及連結在DD馬達33的驅動 支撐轴（旋轉軸_37b)係作為為了主轴單元2〇 機構起作用。另外，為τ 私 另卜為了艇動DD馬達以的激磁電流係， 猎由通過連接器16a連接在DD馬達33的電纜16而被供給。 並且，在根據本發明的上述第一支撐頭3〇，如 旋轉驅動主軸單元20用的DD馬達33係成為僅在—對： 3〇a、鳥中的-方的腳部術被配設的構成。亦即 據本發明的支擇頭’不是如習知般將支撐主軸單元的< 支撐軸-起作為驅動轴，而是僅將一方的支擇轴作為弓區動 7109-9045-PF；Tungming 22 200810875 軸，有關另一方的支撐軸係 能。 係作為僅具有支撐主軸單元的功 一又’在本實施例’將檢測和主轴單體地旋轉的 :對撐轴的旋轉位相(主軸單元2〇的角度位置)用的旋 轉檢測器4卜以及用以保持被轉位的主轴單元別的角产 位置用的夾緊機構34作為配置在⑽馬達33不被配置的： -方的腳部3Gb的㈣的構成^即，在根據本發明的支 撐頭，如上述般，僅在一對支撐部（腳部3〇a、3〇b)的一方 内裝⑽馬達，在藉由不配置DD馬達而空間充裕的另—方 的支撐部(腳畜"0b)側，將旋轉檢測器以及夹緊機構歸納 配置。 又，根據此類構成的話，即使在為了提高支撐剛性、 將主軸單元藉由一對支撐軸夾入般支撐的支撐頭中，與在 習知的各支撐軸分別對應而配設驅動馬達的構成相比，在 支揮軸的軸線方向中的支撐頭的尺寸變大係可被避免，可 防止加工用頭的大型化。 特別是如本實施例般，在將旋轉接頭配設在各支撐部 内的支撐頭中，由於伴隨著DD馬達、軸承以及旋轉接頭的 配設，在其他部件的配置方面受到限制，在一個支撑部内 配設DD馬達和旋轉檢測器及夾緊機構的話，在其支撐軸的 軸線方向中的尺寸不得不變大。對此，根據本發明，由於 在任一方的支撐部内不配設DD馬達，藉由將旋轉檢測器或 夾緊機構的至少一方配設在此DD馬達不被配設側的支撐 部内，與習知支撐頭相比，可將支撐軸的軸線方向中的尺 7109-9045-PF;Tungming 23 200810875 寸縮小。 又，在根據以上說明的本發明的加工用頭中，雖狹支 =第-支撐頭_成為旋轉檢測器及夾緊機構被配設 1 被配設的支擇部（第二支撐部/腳部30b)内的 方 f旦本發明並不限於此，旋轉檢測器或夹緊機構的一 ^ :又在DD馬達被配設的支#部（第—支撐部/腳部 ^ 貝也可。即使在此構成的情形，與在兩支撐部内配設 :馬達的支撐頭相比，可將支撐軸的軸線方向中的尺寸縮 於明本發明*限於上述任—實施方式，在*脫離本 么月的中睛專利範圍的範圍内，可以進行各種變更。 【圖式簡單說明】 明的加工用頭的支撐頭的一實 第1圖係表示在於本發 施例的正面部分剖面圖； 弟2圖係表不在於本於明 不心明的加工用頭的支撐頭的一每 施例的側面圖； 貝 弟3圖係表示本發明的士 面部 分剖面圖；以及 第4圖係表示適用太恭日曰 、用尽啦明的加工用頭的機台 立體圖。 知a的加工用碩的一實施例的正 的一例的 10〜加工用頭 24 【主要元件符號說明 卜機台； 7109-9045-PF;Tungming 200810875 12〜管； 16〜電纜； 18a、18b〜蓋子； 21〜主軸； 24〜埠； 25a〜轉子； 27〜軸承； 30a、30b〜腳部； 31a〜殼體； 31a2〜貫通孔； 31a4〜供給路； 31b〜殼體； 31b2〜流路； 3 2 a〜圓筒部； 3 3〜D D馬達； 33b〜定子； 3 3 c 1〜溝； 34a〜夾緊套筒； 3 4 a 2〜圓筒部； 34a4〜流路； 34bl〜流路； 37、38〜旋轉接頭； 37al、38a卜圓筒部； 37a3、38a3〜流路； 14、15〜螺絲部件； 16a〜連接器； 20〜主軸單元； 23〜殼體； 2 5〜驅動馬達； 2 5 b〜定子； 30〜第一支撐頭； 30c〜支撐部； 31al〜圓筒部； 31a3〜凹部； 31 a 5〜排出路； 31M〜貫通孔； 32〜旋轉轴； 32b〜端面； 33a〜轉子； 33c〜定子套筒； 34〜夾緊機構； 3 4 a 1〜溝； 3 4 a 3〜凸緣部； 34b〜受壓部件； 3 5、3 6〜軸承；Between the cylindrical portion 34a2 of the clamping sleeve 34a and the casing 31b, 3lbl is inserted into the through hole 34b' of the casing 31b, and the pressure receiving member 34b is placed therein. The cylindrical portion 34a2 of the barrel 34. Further, the screw member to be fermented, the clamp sleeve 34 is a pressure receiving member 34b, and the flange portion 34a3 is formed in the cylindrical portion 34a2 with a groove 34a and a pressure chamber. Further, a fluid flow path 34b1 formed by the pressure receiving member 7l〇9-9045-PF; Tungining 16 200810875 34b is connected to the pressure chamber. The fluid flow path 34b1 communicates with the fluid flow path 3ib2 formed in the casing 31b via the fluid flow path 34a4 formed in the flange portion 34a3 of the clamp sleeve 3. Further, here, the clamp mechanism 34, By the fluid flow path, the pressurized fluid (for example, pressure oil) is supplied to the pressure chamber, and the thin portion of the annular groove 34al corresponding to the cylindrical portion 34a2 of the clamp sleeve 3 is deformed in the diameter reducing direction. As a result, the shaft 38b acts on the contraction force in the diameter reducing direction, and the rotation of the shaft 38b and the rotating shaft 39 assembled thereto is prevented (clamped state). Further, by stopping the supply of the pressure fluid to the pressure In the chamber, the deformation state of the thin portion of the cylindrical portion 34a2 is eliminated, and the tightening force with respect to the shaft 38a is lost and the clamped state is released. Further, in the example of the figure, the leg portion 30b is provided for detecting the rotation axis. The rotation detector 41 of the rotation angle of 39 (=the angular position of the spindle unit 2〇) and the angle detector 仏 for limiting the rotation range of the spindle unit 2〇. The rotation detector 41 is composed of the distributor 3 at the rotary joint 38. The through hole 38 of the heart is "inside, installed in the slave The inner circumferential surface of the through hole 38" is positioned at a predetermined position of the disk-shaped branch portion that protrudes in the half-two direction - the pair of heads 41a, 41a 1 and the detector head 41a and the inner side of the crucible are disposed to be rotated. The detection ring 41b of the shaft member 39a of the shaft 39 is not limited to the rotation detector of the present invention, and the object of the structure n is not limited to the object n. It is also known that the spindle from the rotation detector 41 is a single early. The detection signal system of the angular position of 70 Μ is sent to the control device (not shown) of the machine on which the head of the J-knife 17 is loaded, and is used for the rotation control of the main vehicle earlier than 20 7109-9045-PF; Tungming 17 200810875 (Numerical Control). And the angle detector 42 is, for example, a limit switch mounted on a support plate provided in the through hole 38a4 of the distributor 38a, and mounted. The circumferential surface of the disk-shaped member 43 at the end of the rotating shaft 39 is relatively opposed. On the peripheral surface of the member 43, a range corresponding to the allowable angle range is formed, and the rotating device is opposed to the rotating device. In the state, the limit switch 42 is in a state of no actuation. Therefore, when the spindle unit ^ is rotated above the allowable angle by the abnormality of the control or the like, it is detected by the limit switch 42, and the detection signal is transmitted to the control device of the machine as a very stop signal, for example. Hereinafter, the second support head of the processing head 1 shown will be described in detail. As described above, in the processing head 1 of the present embodiment, the second support head 50 supporting the first branch 3 is provided in addition to the first support 30 described above. Further, the 'first support head 3') is supported by the spindle head of the machine table or the like via the second support head π. The second support head 5 is configured to rotate the first support shaft 30 in the center of the axis in the wrong direction (the axis parallel to the axis of the machine table/below, the 'C axis') as the center. (Figure 3). The second support head 50 has a through hole that penetrates in the C-axis direction. The case 51 is a main body, and includes a shaft 52 that is disposed in the through hole W. Further, the second support head 5 is assembled via the rotating shaft 52 to support the master 30. The second support head 5 is attached to the spindle head of the machine or the like via the annular support body 51a of the casing. The second support head 50 is provided in the through hole 51a of the casing 51: 卯', up to 53, in order to rotationally drive the rotating shaft 52; the clamping sleeve 54 is for 7109- 9〇45~pF; Tungming 18 200810875 : Γ: the rotational position of the rotating shaft 52; and the rotary joint 55 to the first support head 30 in order to transfer the fluid. The two motors 53 are fixed to the casing a 3a via the stator (four) 53c, and are disposed to face the inner peripheral surface of the latch 53a, and are constituted by the rotor 53b of the rotating shaft 52. The supply system for driving the excitation current of the Hummer is performed by being connected to the cable 17 of the motor 53 via the connector. The suspect shaft 52 includes a shaft member 52a rotatably provided in the through hole a of the casing 51, and a flange attached to the shaft member =1 end portion and enlarged in the radial direction (the direction orthogonal to the C axis) Through hole. i, the rotary shaft 55 is formed with the rotary joint 55 inserted through the member. In the illustrated example, the bearing member 52d is formed by "opening between the shaft member of the rotary shaft 52 and the flange". @jt-vl·^ -z 52d , and a bearing 56 is interposed between the bearing housing 52, and the bearing 56 is rotatably driven and _51 is rotatably supported. Therefore, the bearing 56 in the example is a one-piece bearing of the composite roller type of the oscillating bearing (three-row roller bearing/axial/radial roller bearing), and then the axial direction and the radial direction The load of the direction is heavy. The outer peripheral surface of the sub-clip member 523 is externally fitted with a turn of the dd motor 53: 2 _ + 53 ^ Rotate ^^ is the center-rotating drive vehicle, and the flange member is offset by the circumferential direction. A member 52e is provided and assembled to the shaft member 52a, and the shaft member 52a is substantially rotated. Further, in the flange member 52b, 7109-9045-PF is screwed in the circumferential direction; Tungming 19 200810875 is inserted into a plurality of screws 19' by the screw member 19, and the support portion 30c of the first support head 3〇 is Assembled to the flange material (10). Therefore, the rotary shaft 52 is rotationally driven by the DD motor 53 to rotate together with the rotary shaft 52. The 梡 梡 3° square 疋 adapter 55 is the same rotary joint as the rotary joint of the first support head 3〇, and is fixed by the dispenser of the housing 51, and is rotatably The through hole formed in the distributor 55a is embedded in the shaft, and the shaft and the distributor 55a are arranged concentrically. The distributor 55a is formed by a cylindrical portion 55a2 disposed in the through hole 52c of the rotating shaft 52 and an end portion on the side of the first supporting head 3b on the opposite side of the cylindrical portion 55a2 in the radial direction. In the flange portion 55a3, the flange portion is assembled to the casing 51 by a plurality of screw members arranged in the circumferential direction. Further, at the end of the first support head 3 on the side of the shaft 55b, a disk-shaped flange member 57 is assembled, and the shaft 55b is passed to the flange member 52b of the rotary shaft 52 via the flange member 57. Assembly. Therefore, the shaft 55b also rotates together with the rotation of the rotary shaft 52. Further, the flange member 57 is formed in a shape of a circular recessed portion 3〇cl formed in the support portion 3〇c of the first support head 3〇, whereby the flange member 57 and the support portion 3〇c are The recess 3〇Cl is positioned to assemble the first support head 30 and the second support head 50. In the distributor 55a, a plurality of fluid flow paths 55a4 for introducing a fluid from the outside are formed at positions shifted in the circumferential direction. On the other hand, in the shaft 55b, a plurality of fluid flow paths 55b1 corresponding to the respective fluid flow paths 55a4 of the distributor 55a are formed at the circumferentially offset positions. 7109-9045-PF; Tungming 20 200810875 Further, each of the fluid flow paths 55a4 and the respective fluid flow paths 55b1 are configured to be connected via an annular groove formed on the fitting peripheral surface of the distributor 55a and the shaft 55b. When the shaft 55b rotates, it also maintains its connected state. Further, the plurality of fluid flow paths 55b1 formed in the shaft 55b are respectively communicated with the corresponding fluid flow paths 37a3 or 38a3 formed by the distributors 37a, 38a of the rotary joints 37 or 38 of the first support head 30. Therefore, the flow system of the distributor 55a supplied from the outside to the rotary joint 55 is supplied to the rotary joints 37, 38 of the first support head 30 via the shaft 55b. Between the distributor 55a fixed to the casing 51 and the shaft member 52a of the rotary shaft 52, a clamp sleeve 54 for holding the rotational position of the rotary shaft 52 is provided. The clamp sleeve 54 is formed in the flange portion 5, and is assembled to the distributor 55a by a plurality of screw members, and is provided to allow relative rotation with the rotary shaft 。. Further, the cylindrical portion 5 of the clamp sleeve 54 is formed with an annular groove 5 that is open on the side of the cylindrical portion 55a2 of the distributor 55a, whereby the annular groove 54c and the cylindrical portion of the distributor 55a are formed. The outer periphery of 55a2 forms a pressure chamber. The body fluid path 54d formed by the DM is supplied with the pressure fluid, and the thin meat portion of the annular groove 54c that is opposite to the circle, the plate and the W portion 54b is deformed in the diameter expansion direction. In the case of the rotation axis 52, the tightening force in the radial expansion direction is applied, and the rotation of the rotary shaft 52 becomes a blocked state (clamped state). Further, at the upper end portion of the rotary joint 55, the rotation amount of the rotation axis 52, that is, the rotation detection H 44 of the rotation amount of the first support head ^ is provided. The rotation detector 44 is a pair of detector heads 44a, 44a configured at a predetermined position on the dispenser core 7109-9045-PF/Tungming 21 200810875; and with the detector heads 44a, 4 4 Relatively arranged, it is installed on the rotating shaft 52, which is rotated by a 〃5b. The detection of the rotation detector 44 is used for the first support head 3 in the same manner as the rotation detector 41 of the first support head 3G. Rotation control. - In the above-described reinforcing head 10 composed of the above, the support head (the first support head 3A) of the branch spindle unit 70 20 is the main axis of the 'supporting shafts' of the pair of leg portions 30a and 30b. The state of the unit 2 () is fixedly supported for the two support shafts so as not to be able to rotate. Further, in the spindle unit 20, the drive support shaft on the side of the leg portion 3〇a is rotationally driven by the motor (10), and the axis of rotation of the support shaft (= axis orthogonal to the rotation axis of the spindle 21/axis A) ) is rotated centrally toward the desired angular position. The drive system of the DD motor 33 is controlled in accordance with the numerical control based on the program set in advance, and the spindle unit 2 is controlled by driving the support shaft by the rotation control of the rotor 33a by the entanglement of the rotor 33a. Angle position. Therefore, in the illustrated example, the DD motor 33 in the leg center and the drive support shaft (rotation axis_37b) connected to the DD motor 33 function as a spindle unit 2 机构 mechanism. Further, for the τ private, the exciting current system for the boat DD motor is supplied by the cable 16 connected to the DD motor 33 via the connector 16a. Further, in the above-described first support head 3 according to the present invention, for example, the DD motor 33 for the rotary drive spindle unit 20 is provided only in the pair: 3〇a, the foot of the bird. Composition. That is, the support head according to the present invention does not use the support shaft of the main shaft unit as a drive shaft as a conventional one, but only one of the support shafts as a bow movement 7109-9045-PF; Tungming 22 200810875 Axis, about the other side of the support shaft energy. As a function of only supporting the spindle unit, and in the present embodiment, the detection and the spindle are individually rotated: a rotation detector 4 for the rotational phase of the support shaft (an angular position of the spindle unit 2A) and The clamping mechanism 34 for maintaining the angular position of the spindle unit to be indexed is configured as a configuration in which (10) the motor 33 is not disposed: - (4) of the square leg portion 3Gb, that is, the support according to the present invention As described above, the motor (10) is mounted in only one of the pair of support portions (foot portions 3〇a, 3〇b), and the other support portion (foot animal) is provided in a space that is not provided by the DD motor. On the "0b) side, the rotation detector and clamping mechanism are summarized. Further, according to such a configuration, even in a support head that supports the main shaft unit by sandwiching the pair of support shafts in order to increase the support rigidity, the drive motor is disposed corresponding to each of the conventional support shafts. In contrast, the size of the support head in the axial direction of the support shaft can be prevented, and the size of the processing head can be prevented from being increased. In particular, as in the present embodiment, in the support head in which the rotary joint is disposed in each of the support portions, the arrangement of the other components is restricted by the arrangement of the DD motor, the bearing, and the rotary joint, and is supported in one support portion. When the DD motor and the rotation detector and the clamping mechanism are provided, the size in the axial direction of the support shaft has to be increased. On the other hand, according to the present invention, since the DD motor is not disposed in any one of the support portions, at least one of the rotation detector and the clamp mechanism is disposed in the support portion on the side where the DD motor is not disposed, and the conventional support is provided. Compared with the head, the ruler 7109-9045-PF in the axial direction of the support shaft; Tungming 23 200810875 inch can be reduced. Further, in the machining head according to the present invention described above, the narrow support = the first support head _ is a rotation detector and the clamp mechanism is provided with a support portion (second support portion / foot) In the portion 30b), the present invention is not limited thereto, and the rotation detector or the clamping mechanism may be provided in the branch portion of the DD motor (the first support portion/foot portion). Even in the case of this configuration, compared with the support head in which the motor is disposed in the two support portions, the dimension in the axial direction of the support shaft can be reduced to the present invention*, and the present invention is limited to the above-described embodiments. Various changes can be made within the scope of the monthly patent range of the month. [Simplified illustration of the drawing] A solid first drawing of the support head of the processing head is shown in a front partial sectional view of the present embodiment; The drawing is not a side view of each of the embodiments of the support head of the processing head, which is unclear; the drawing of the drawing of the face of the present invention is shown in Fig. 3; A three-dimensional view of the machine head of the processing head that has been used up by Gong Lie. A positive example of a 10 to a processing head 24 [main component symbol description machine; 7109-9045-PF; Tungming 200810875 12~ tube; 16~ cable; 18a, 18b~ cover; 21~ spindle ; 24 ~ 埠; 25a ~ rotor; 27 ~ bearing; 30a, 30b ~ foot; 31a ~ housing; 31a2 ~ through hole; 31a4 ~ supply path; 31b ~ housing; 31b2 ~ flow path; 3 2 a ~ circle Tube; 3 3~DD motor; 33b~stator; 3 3 c 1~ditch; 34a~ clamping sleeve; 3 4 a 2~ cylindrical part; 34a4~ flow path; 34bl~ flow path; 37, 38~ Rotary joint; 37al, 38a, cylindrical part; 37a3, 38a3~ flow path; 14, 15~ screw part; 16a~ connector; 20~ spindle unit; 23~ housing; 2 5~ drive motor; 2 5 b~ 30; first support head; 30c~ support portion; 31al~cylinder portion; 31a3~recess; 31a5~discharge path; 31M~through hole; 32~rotation axis; 32b~end face; 33a~rotor; ~ stator sleeve; 34 ~ clamping mechanism; 3 4 a 1 ~ groove; 3 4 a 3 ~ flange portion; 34b ~ pressure member; 3 5, 3 6 ~ bearing;
37a、38a〜分配器； 37a2、38a2〜凸緣部 37a4、38a4〜貫通孑L 7109-9045-PF;Tungming 25 37bl、38bl〜流路 37d〜埠； 39a〜軸部件； 39bl〜端面； 4la〜檢測器頭； 42〜角度檢測器； 4 4〜旋轉檢測器； 44b〜檢測器轉子 51〜殼體； 5 3〜D D馬達； 53b〜轉子； 5 5〜分配器； 200810875 37b、38b〜轴； 37c、38c〜螺絲部件； 3 9〜旋轉軸； 3 9 b〜凸緣部件； 41〜旋轉檢測器； 41 b〜檢測環； 43〜部件； 4 4 a〜檢測器定子； 50〜第二支撐頭； 5 2〜旋轉軸； 5 3 a〜定子； 54〜夾緊套筒； 5 6〜軸承（三列圓筒滾子軸承）。 7109-9045-PF;Tungming 2637a, 38a~ distributor; 37a2, 38a2~ flange portion 37a4, 38a4~through 孑L 7109-9045-PF; Tungming 25 37bl, 38bl~ flow path 37d~埠; 39a~ shaft member; 39bl~end face; 4la~ Detector head; 42~angle detector; 4 4~ rotation detector; 44b~ detector rotor 51~ housing; 5 3~ DD motor; 53b~ rotor; 5 5~ distributor; 200810875 37b, 38b~ shaft; 37c, 38c ~ screw parts; 3 9 ~ rotating shaft; 3 9 b ~ flange parts; 41 ~ rotation detector; 41 b ~ detection ring; 43 ~ parts; 4 4 a ~ detector stator; 50 ~ second support Head; 5 2~ rotating shaft; 5 3 a~ stator; 54~ clamping sleeve; 5 6~ bearing (three-row cylindrical roller bearing). 7109-9045-PF; Tungming 26