201219149 六、發明說明： 【發明所屬之技術領域】 本發明為—種圓周運動之旋轉I作台，特別是指-種以流 體健軸承為基礎之缝靜顧料作台，除了可大幅提升旋 轉平面精料’更可提高細性及承勤，並具錢^永無磨 損的使用壽命。 【先前技術】 • 目神面上各式搭立式車床、搪床、絲及中心加工 機之旋轉工作台’不論立式或臥式用途，基本上大都是使用傳 統的滾動軸承（包含止推軸承)作為徑向與軸向的支撐。傳統的 滚動軸承包括滾珠軸承及滚柱軸承，在高速、精度需求考量 時’多以滾珠軸承為主；若是應用在大型（重型)機具時，則在 載重、高負荷考量情況下，則會改採滚柱軸承，但不利於高轉 速情況使用。上述_滾_承在運猶，仍在有哪體之接 鲁觸’長時間使用除了會產生剛性體的碰撞與磨擦外，進而會產 生相當的磨耗與溫升’即便在使用潤滑油脂的保護下，長期的 運轉及高度荷重、切削力影響，仍會對滾動體造成變形，不但 因此縮短滾動軸承的壽命，更會影響機具的加工精度。 現今業界較常應躲旋轉功台的方式，除了上述的滾珠 轴承及滾柱軸承外，在大型工具機上為強化荷重方面的表現， 會以類滑動軸承的方式，在滑動面上貼附鐵弗龍之類材質的耐 磨片’搭配局部人卫鐘花方式來進行強糊滑，這樣的方式雖 201219149 在使用初期可加強荷重及重切削時的能力，但因為使用這 耐磨片會使縣準面;致，加上長時間使用仍會產生磨耗， 因此精度無法提升，使財命也容易大幅降低，此外以耐磨片 的方式容|增加額外的雜力，翻在大型機具時，容易造成 傳動機構(如馬達、螞桿蝎輪···等）的負擔，間接也容易造=傳 動機構的壽命減少。減可見，上述之物品及方式仍存有 許多缺失’麟—優良之設計者，因此仍有相當大的改善空間。 本案發明人鏗於上述制傳統滾動及滑_承所衍生之 各項缺失’乃努力思考各項解決方法，並加以實驗驗證，終致 此一流體靜壓軸承旋轉工作台之誕生。 【發明内容】 本發明提供一種流體靜壓軸承旋轉工作台，其主要係由一 下方具有一徑向軸承用主軸之旋轉盤、一内部裝設有數個上下 衣狀轴向畜壓槽及數個内部壞狀徑向蓄壓槽之靜壓轴承模 、、且、數個節流器、一轴向間隔環、一精密螺帽、一蓄油槽、一 傳動馬達及-最佳化設計之高抗振基座所構成；該旋轉盤為一 τ字型構造，其盤面可為圓形或方形之任一最佳化設計幾何形 狀元件’主要用來承載並穩固地鎖定治具與加工件，其結構可 由一實心合金鋼材一體成型加工(剛性最佳）；或分成兩部份， 由一圓型轉盤與一主轴固定在一起(但組裝時須注意兩者之垂 直度）。該旋轉盤上方即為工作台面，可依不同需求設計有數 量不等之T型溝槽及固定螺絲孔，以方便加裝不同需求之治具 201219149 (如夾頭或磁盤），由於此旋轉盤上方即為工作台面之基準面， 所以其平面加工精度需達請1咖觸咖内；同樣地，旋轉盤 之下方為轴向靜壓軸承之接觸面，其平面精度亦需達到 〇.〇〇lmm/500刪内’並與上述基準面保持〇 _麵内之平行 度’而心軸則需與此兩平面保持〇. 〇〇lmm内之垂直精度，方可 使此流體靜_承_1作台發揮最完美的_精^此旋轉 盤侧邊外圍部份並設財—斜轉度的排水設計，以便於將上 _ 方β落之切肖懷甩^ ’避免渗人靜壓軸承内部；該靜>1軸承模 組則為-圓柱體結構，側邊亦設計有一斜面錐度的排水設計，、 内部裝設有對等數量之上、下環狀軸向蓄麗槽及數個内部環狀 徑向蓄壓槽，此上部與下部之環狀軸向蓄壓槽平面亦需達到 0.001mm/500mm内之加工平面精度與〇.〇〇〇1刪内之平行度， 而該數個内部環狀徑向㈣槽圓周面，也需達到請lm^之 加工真圓度及與上述兩上下平面請lmm内之垂直精度。此 • 外，一入油孔設於此靜壓軸承模組之侧邊，進入靜壓軸承模組 之液壓油可順著内部設計之油路平均進入上、下環狀轴向蓄壓 槽，其主要提供上、下轴向垂直方向之對向靜壓推力；而進入 内部環狀徑向蓄壓槽的部份，則負責提供徑向水平方向之對向 靜壓推力；該數個節流器則裴設於前述之靜壓軸承模組中，主 要將進行節流後之節流推力精準送入蓄壓槽，並產生一可變之 節流阻抗’可使前述之旋轉盤之軸向及徑向接觸面皆緊密包覆 於冋壓油膜之中；該軸向間隔環主要提供此流體靜壓軸承旋轉 201219149 工作台系統之軸向靜壓轴承所需間隙，並由一精密螺帽進行固 定，該蓄油槽主要功能則為收集前述部份供油後產生之回油， 由側邊之回油孔接管將液壓油再導回油壓單元中，再由馬達泵 浦將其注入前述之入油孔，如此不斷循環，構成一循環之流體 回路。該蓄油槽除了蓄油功能外，其侧邊並設有一法蘭緣，其 上設有數量不等之螺絲孔，方便前述之模組系統可直接鎖固在 任何工具機上以進行固定；該傳動馬達主要負責動力傳輸，可 直接傳動，或藉由皮帶輪及皮帶的聯結，將動力傳輸至旋轉盤 下方之主軸，帶動旋轉盤之旋轉，透過變頻器的調整，可進行 〇·1〜數千r.p.m.不同轉速的變化；該最佳化設計之高抗振基 座則提供不同使用者另一彈性加工之模組，其主要提供上述模 組系統及馬達一穩定之固定介面，可在原加工母機不作任何更 動情況下，直接提供一完整的流體靜壓軸承旋轉工作台模組， 直接架上機台鎖定後即可運作。此最佳化設計之高抗振基座更 可使流體靜壓轴承旋轉工作台及馬達運轉期間不致產生過大 之振動，並能有效提供抗振阻尼，並使所有相關零組件構成一 完整平台，可應用於各種不同之工作母機平台。 經過高壓過濾器的純淨工作流體（液壓油）於油壓系統 中’藉由泵浦的作動輸出至靜壓軸承模組側邊的入油孔，進入 入油孔後，液壓油再順著内部設計之流道均勻地流入上、下環 狀軸向蓄壓槽及内部環狀徑向蓄壓槽，在通過上述不同的蓄壓 槽之前，液壓油會先流經裝設於靜壓轴承模組内之數個節流 201219149 器，經過節流後的液壓油再由前述的不同蓄壓槽喷嘴流出，分 別提供上'下軸向垂直方向之靜壓推力及徑向水平方向之靜壓 推力，並產生一可變之節流阻抗。此刻充滿於轴向及徑向靜壓 軸承間隙中之高壓油膜，便將旋轉盤穩定地浮起並維持精密之 平行及垂直度’使旋轉盤可於無磨擦狀態下順暢地進行圓周運 動，並恒時維持一定之剛性，不論由外部施壓於盤面任何一 點，旋轉盤均能穩定地維持平面精度。 本發明之流體靜壓軸承旋轉工作台，由於沒有滑動磨擦的 產生，因此不須再於滑動面上貼附耐磨片，除了可減少安裝程 序及成本，無磨擦的優勢更可大幅提升使用壽命，並降低曰後 維修的成本及時間。此外，本發明之流體靜壓軸承旋轉工作台 屬於全密閉式的流體靜壓迴路，不論上、下軸向及圓周徑向皆 有全方位的流體靜壓支撐力，不若傳統滚動軸承只具有局部之 軸向單向及部份圓周徑向之軸承支撐力，因此本發明之流體靜 壓軸承旋轉工作台具有更佳優異之剛性及穩定性，進而可有效 提升加工精度與品質。 【實施方式】 本發明流體靜壓軸承旋轉工作台，實施如圖卜圖3所示， 一圓柱形之蓄油槽g底座，可藉由周圍之法蘭緣鎖定於任一工 作母機之床身上，或以一方形最佳化設計之抗振基座u，鎖 定於工具機床身上，或直接吸附於電磁工作盤上。其上方裝設 一靜壓軸承模組3，其内部透過精密加工，裝設有數個流體流 201219149 道及若干個精密趣咖6，並料物繼位置，裝設 =個對·量之上、下環狀軸向#壓槽4及數細部環狀徑 B蓄差槽5此上。|5與下部之環狀軸向蓄麗槽平面需達到 0.001咖/500細内之加工平面精度與〇 〇〇〇1細内之平行度， 而該數個内部環狀徑向蓄壓槽圓周面，也需達到0 001麵内之 加工真圓度及與上述兩上下平㈣肩咖内之垂直精度。旋轉 盤1為- T字型構造，其盤面可為圓形或方形之任一最佳化設 計幾何形狀元件，主要絲承餘_地鎖拉具與加工件， 其結構可和合金㈣—職型加工(職最你或分成 兩部份’由-圓型轉盤與-主軸2固定在一起(但組裝時須注 意兩者之垂直度）。旋轉盤上方即為工作台面之基準面所以 其平面加工精度需達0. 001咖觸腿内；同樣地，旋轉盤之下 方為軸向靜壓軸承之接觸面，其平面精度亦需達到 0.001mm/500mm内，並與上述基準面保持〇 〇〇〇1咖内之平行 度；而主軸2則需與此兩平面保持〇. 〇〇1刪内之垂直精度，方 可使此流麟絲承雜卫作自發揮最完美_騎度。在主 軸2下方’則裝設有—轴向間隔環7，主要負責調整旋轉盤^ 本體與靜壓軸承模組3之軸向最佳嶋，再由其下方之精密螺 帽8固定其位置，使其永保最佳間隙值。由以上各元件組裝搭 配後’方可提供-精密之滑動間隙。最後於主軸2下端直接裝 设一傳動馬達1〇(例如D· D M〇t〇r)，可直接驅動主軸2帶動 上方之旋轉盤1(如圖2所示）；或在最佳化設計之高抗振基座 201219149 11之側邊，直接裝設一傳動馬達10(例如词服馬達），透過皮 帶輪與皮帶的傳輸’來間接驅動主軸2並帶動上方之旋轉盤 1 (如圖1所示）。 H流體（液壓油）義泵浦的作動輸出至靜壓轴承模 組侧邊的人油孔12後，液壓油再順著崎設計之流道均勻地 机入上、下環狀軸向蓄壓槽4及内部環狀徑向蓄壓槽5，在通 過上述不同的蓄壓槽之前，液壓油會先流經裝設於靜壓轴承模 •、组3内之數個節流器6 ’經過節流後的液壓油再由前述的不同 蓄壓槽喷嘴流出，分職供上、下軸向垂直方向之雜推力及 I向水平方向之靜壓推力，並產生—可變之節流阻抗 。此刻充 滿於軸向及徑向靜壓軸承間隙中之高壓油膜，便將旋轉盤穩定 地浮起並維持精密之平行及垂直度，使旋轉盤可於無磨擦狀態 下順暢地進行圓周運動’並恒時維持—定之剛性，不論由外部 施壓於盤面任何-點，旋觀均能穩定地轉平面精度。 • 由前述可知，本發明之流體靜壓軸承旋轉工作台，只要依 序將相關物舰珊密研雜，彼聽合後即可絲組農，不 需要在各個接觸之相對滑動面進行人工鏟花或貼附傳統使用 之鐵弗龍料磨>；，不但能相對減少安裝程序以節省工時，且 在維修保養上也相當方便。此外，由於旋轉盤i與靜壓轴承模 組3之間並無磨擦產生，因此在零磨耗情況下不但能提升動 態精度與使用壽命，在保養上亦可大幅降低傳統滾動轴承旋轉 工作台之繁瑣保養程序。 201219149 且本發明流體靜壓轴承旋轉工作台和前述習用相較之 下’更具有下列優點： L由於本發明可使該旋轉盤1藉由工作流體懸浮於其與 靜壓軸承模組3之間隙中，因此兩者即使在高速情況下進行反 覆之圓周運動，彼此也不會產生磨擦熱，可大幅降低熱溫昇、 減夕熱變形，因此無論長時間或高速之反覆運動，都不會影響 加工精度’更可有效提高加工工件之品質及精度。此外，在應 用於精密分度分割功能時’更可有效減少黏滯滑動之情況。 2. 本發明由於以精密流體節流器6搭配靜壓轴承之概 念，所以能夠自動補償調整不同阻抗下所造成之壓力差，使旋 轉盤1上方之工作台面永遠保持穩定解衡，因此即使在高荷 重或重切肖彳情況下，也可達到比傳統滾動軸承旋轉讀台加工 時更為優異之加工參數。 3. 本發明以精密流體㈣n6與高M工作流體的結合，其 高壓油膜所產生之高度賺’轉統賴軸承可承受之重量更 高，加上無磨擦的雖，特別適合超大、超重•具機之應用。 為使熟悉該項技術者可確實了解本㈣之構造特徵及其 他發明目的與功效，_舉上述所陳之具财補，並配合所 附圖示予以詳細說明，惟所選用之實施例供本案說明之用，本 案尚可以其财式實施’故熟悉綱技術者在不雌本發明之 發明精神下，凡依本說明而做出的其他變化實施態樣，皆可被 本案申請專利範圍所涵蓋，特併予指明。 201219149 綜上所述，本發明為一種流體靜壓軸承旋轉工作台，其主 要係由一下方具有一徑向軸承用主軸之旋轉盤、一内部裝設有 數個上下環狀轴向蓄壓槽及數個内部環狀徑向蓄壓槽之靜壓 軸承模組、數個節流器、一軸向間隔環、一精密螺帽、—蓄油 槽、一傳動馬達及一最佳化設計之高抗振基座所構成；該旋轉 盤為一 τ字型構造，可由一實心合金鋼材一體成型加工（剛性 最佳）’或分成兩部份，由一圓型轉盤與一主軸固定在一起(但 _ 組裝時須注意兩者之垂直度）。該旋轉盤上方即為工作台面， 可依不同需求設計有數量不等之τ型溝槽及固定螺森孔，以方 便加裝不同需求之治具(如爽頭或磁盤）。其側邊外圍部份並設 計有一斜面錐度的排水設計，以便於將上方滑落之切削液甩 出，避免滲入靜壓軸承内部；該靜壓軸承模組則為一圓柱體結 構’侧邊亦設計有一斜面錐度的排水設計，内部裝設有對等數 量之上、下環狀軸向蓄壓槽及數個内部環狀徑向蓄壓槽，一入 • 油孔设於此靜壓軸承模組之側邊，進入靜壓軸承模組之液壓油 可順著内部設計之油路平均進入上、下環狀軸向蓄壓槽，其主 要提供上、下軸向垂直方向之對向靜壓推力；而進入内部環狀 從向蓄壓_部份，則貞責提供徑向水平方向讀向靜壓推 力’該數轉流器則裝設於前述之靜塵軸承模組中，主要將進 行節流後之節流推力精準送人蓄壓槽，並產生—可變之節流阻 k，可使前述之旋轉盤之軸向及徑向接觸面皆緊密包覆於高壓 油膜之中；該軸向間隔環主要提供此流體靜壓轴承旋轉工作台201219149 VI. Description of the Invention: [Technical Field of the Invention] The present invention is a rotary motion I for a circular motion, in particular, a slit-based static material based on a fluid-hydraulic bearing, in addition to greatly increasing the rotation Plane concentrates can improve the fineness and duty, and have a long-lasting wear life. [Prior Art] • Rotary table for all kinds of vertical lathes, boring machines, wires and central processing machines on the surface of the eye. Whether vertical or horizontal, basically use traditional rolling bearings (including thrust bearings). ) as radial and axial support. Conventional rolling bearings include ball bearings and roller bearings. In the case of high speed and precision requirements, most of them are ball bearings. If they are used in large (heavy) machines, they will be used under heavy load and high load. The roller bearing is changed, but it is not suitable for high speed. The above-mentioned _rolling_bearing in Yunju, still in the body of the contact, the long-term use in addition to the collision and friction of the rigid body, and then will produce considerable wear and temperature rise' even with the use of grease protection Under the long-term operation and high load and cutting force, the rolling element will still be deformed, which not only shortens the life of the rolling bearing, but also affects the machining accuracy of the machine. Nowadays, in the industry, the way to avoid the rotary table is more than the above-mentioned ball bearing and roller bearing. In order to enhance the load on the large machine tool, the iron will be attached to the sliding surface by means of a sliding bearing. The wear-resistant piece of Fron and other materials is matched with the local human-bell flower pattern to make strong paste slip. This way, although 201219149 can strengthen the load and heavy cutting ability in the initial stage of use, it will make the wear-resistant piece County level; so, plus long-term use will still produce wear, so the accuracy can not be improved, so that the financial life is also easy to greatly reduce, in addition to the wear-resistant film capacity | add extra force, turn over large machines, It is easy to cause a burden on the transmission mechanism (such as a motor, an arbor, etc.), and it is also easy to make indirectly = the life of the transmission mechanism is reduced. Less visible, there are still many missing items in the above-mentioned items and methods, so there is still considerable room for improvement. The inventors of this case succumbed to the various defects in the traditional rolling and sliding of the above-mentioned system, and they tried hard to think about various solutions and verified them experimentally, which led to the birth of this hydrostatic bearing rotary table. SUMMARY OF THE INVENTION The present invention provides a hydrostatic bearing rotary table, which mainly comprises a rotating disc having a main shaft for a radial bearing, a plurality of upper and lower garment axial pressure grooves and a plurality of inner and lower clothes. Static bearing model of internal bad radial accumulator groove, and several throttles, an axial spacer ring, a precision nut, an oil reservoir, a transmission motor and a high anti-vibration base optimized for design The rotating disc is of a τ-shaped structure, and the disc surface can be any circular or square design. The geometrical component is mainly used for carrying and firmly locking the jig and the workpiece, and the structure can be A solid alloy steel is integrally formed (optimum rigidity); or divided into two parts, fixed by a circular turntable and a main shaft (but the assembly should pay attention to the verticality of the two). The top of the rotating disc is the work surface. A variety of T-shaped grooves and fixing screw holes can be designed according to different requirements, so as to facilitate the installation of different requirements of the fixture 201219149 (such as chuck or disk), due to the rotating disc The upper part is the reference surface of the work surface, so the plane processing precision needs to reach 1 coffee bar; similarly, the lower surface of the rotating disk is the contact surface of the axial static pressure bearing, and the plane precision also needs to reach 〇.〇〇 Lmm/500 deletes 'and maintains the parallelism of 〇_ in-plane with the above reference plane' and the mandrel needs to maintain 〇 with the two planes. The vertical precision within 〇〇lmm can make this fluid static_承_1 Make the most perfect _ fine ^ this side of the rotating disk side of the side and set the financial - slanting drainage design, so that the upper _ square β falls in the right 甩 ^ 'avoid the infiltration of the static bearing inside The static >1 bearing module is a cylindrical structure, and the side is also designed with a sloped taper drainage design, and the interior is provided with an equal number of upper and lower annular axial storage slots and several internals. Annular radial accumulator groove, the upper and lower annular axial accumulator groove plane It is necessary to achieve a machining plane accuracy of 0.001 mm/500 mm and a parallelism of 〇.〇〇〇1, and the inner annular radial (four) groove circumferential surface also needs to achieve the processing roundness of lm^ and The vertical accuracy within 1 mm of the above two upper and lower planes. In addition, an oil inlet hole is arranged on the side of the hydrostatic bearing module, and the hydraulic oil entering the hydrostatic bearing module can enter the upper and lower annular axial pressure accumulating grooves along the oil path of the internal design. It mainly provides the opposing static pressure thrust in the vertical direction of the upper and lower directions; and the portion entering the inner annular radial pressure accumulating groove is responsible for providing the radial static thrust in the horizontal direction; the several throttling The device is disposed in the static bearing assembly described above, and mainly sends the throttling thrust after throttling into the accumulator groove, and generates a variable throttling impedance to make the axial direction of the rotating disk And the radial contact surface is tightly wrapped in the rolling oil film; the axial spacer ring mainly provides the required clearance of the hydrostatic bearing of the hydrostatic bearing rotating 201219149 table system, and is performed by a precision nut Fixed, the main function of the oil storage tank is to collect the oil returned after the above part of the oil supply, and the hydraulic oil is led back to the oil pressure unit by the oil return hole on the side, and then injected into the foregoing by the motor pump. Into the oil hole, so continuous circulation, constitute a cycle of circulation Loop. In addition to the oil storage function, the oil storage tank is provided with a flange edge on the side thereof, and a plurality of screw holes are arranged thereon, so that the foregoing module system can be directly locked on any machine tool for fixing; The transmission motor is mainly responsible for power transmission, and can be directly driven, or by the connection of the pulley and the belt, the power is transmitted to the main shaft below the rotating disc, and the rotation of the rotating disc is driven, and the adjustment of the inverter can be performed. The rpm has different speed changes; the optimized anti-vibration base provides another elastic processing module for different users, which mainly provides a stable fixed interface of the above module system and motor, and can be used in the original processing machine without any change. In this case, a complete hydrostatic bearing rotary table module is directly provided, and the machine can be operated directly after the machine is locked. The high-vibration base of this optimized design can make the hydrostatic bearing rotating table and the motor do not generate excessive vibration during operation, and can effectively provide anti-vibration damping and make all related components form a complete platform. For a variety of different work machine platforms. The pure working fluid (hydraulic oil) passing through the high-pressure filter is outputted to the oil inlet hole on the side of the hydrostatic bearing module by the pumping action, and after entering the oil inlet hole, the hydraulic oil flows along the inside. The designed flow passage uniformly flows into the upper and lower annular axial pressure accumulating tanks and the inner annular radial pressure accumulating tank. Before passing through the different accumulator tanks, the hydraulic oil first flows through the hydrostatic bearing mold. Several throttling 201219149 in the group, the hydraulic oil after throttling flows out from the different accumulator nozzles mentioned above, and provides the static thrust in the vertical direction of the 'lower axial direction and the static thrust in the horizontal direction. And produces a variable throttling impedance. At this moment, the high-pressure oil film filled in the axial and radial hydrostatic bearing gaps will stably float the rotating disc and maintain precise parallel and perpendicularity', so that the rotating disc can smoothly move in a circular motion without friction. Constantly maintaining a certain rigidity, the rotating disc can stably maintain the plane accuracy regardless of the external pressure applied to any point on the disc surface. The hydrostatic bearing rotary table of the invention has no sliding friction, so it is no longer necessary to attach the wear-resistant piece to the sliding surface, in addition to reducing the installation procedure and cost, the advantage of no friction can greatly improve the service life. And reduce the cost and time of maintenance after the repair. In addition, the hydrostatic bearing rotary table of the present invention belongs to a fully enclosed hydrostatic circuit, and has a full range of hydrostatic support forces regardless of the upper and lower axial directions and the circumferential radial direction, and is not limited to conventional rolling bearings. The partial axial unidirectional and partial circumferential radial bearing support force, therefore, the hydrostatic bearing rotary table of the invention has better rigidity and stability, and can effectively improve the processing precision and quality. [Embodiment] The hydrostatic bearing rotary table of the present invention is implemented as shown in FIG. 3, and a cylindrical oil storage tank g base can be locked on the bed of any working machine by the surrounding flange edge. Or use a square-optimized design of the anti-vibration base u, locked on the tool machine, or directly attached to the electromagnetic work plate. A static bearing module 3 is mounted on the top thereof, and the interior thereof is precision-machined, and several fluid streams 201219149 and a number of precision fun coffees 6 are installed, and the materials are placed in the position, and the installation is over a pair. The lower annular axial direction #pressure groove 4 and the plurality of thin annular path B accumulation grooves 5 are above. |5 and the lower annular axial storage groove plane need to reach the machining plane precision within 0.001 coffee / 500 fine and the parallelism within the 〇〇〇〇1 fine, and the inner annular radial pressure storage groove circumference In addition, it is also necessary to achieve the roundness of processing in the 0 001 plane and the vertical precision in the shoulders of the above two upper and lower flats. The rotating disc 1 is a T-shaped structure, and the disc surface can be any geometric design element of a circular or square shape. The main wire is the residual lock and the workpiece, and the structure can be combined with the alloy (4). Type processing (the most you are or divided into two parts) is fixed by the -round turntable and the - spindle 2 (but the assembly must pay attention to the verticality of the two). Above the rotating disk is the reference surface of the work surface so its plane The processing precision needs to reach 0. 001 coffee to touch the leg; similarly, the lower surface of the rotating disk is the contact surface of the axial static pressure bearing, and the plane precision also needs to be within 0.001 mm/500 mm, and is kept with the above reference surface. 〇1 Parallelism in the coffee; while the main shaft 2 needs to be kept with the two planes. 〇〇1 Delete the vertical precision, so that this streamliner can be used to play the most perfect _ riding degree. 2 below, the axial spacer ring 7 is installed, which is mainly responsible for adjusting the axial optimum of the rotating disc body and the hydrostatic bearing module 3, and then fixing the position thereof by the precision nut 8 below it. The best clearance value forever. After assembling and matching the above components, 'provided' - precision slip Finally, a transmission motor 1〇 (for example, D· DM〇t〇r) is directly installed at the lower end of the main shaft 2, and the spindle 2 can be directly driven to drive the upper rotating disk 1 (as shown in FIG. 2); or optimized. Designed on the side of the high anti-vibration base 201219149 11, directly mounted a drive motor 10 (such as the word service motor), indirectly through the pulley and belt transmission 'indirectly drive the spindle 2 and drive the upper rotating disc 1 (as shown in Figure 1 After the H fluid (hydraulic oil) pump is actuated to the oil hole 12 on the side of the hydrostatic bearing module, the hydraulic oil is evenly machined into the upper and lower annular axes along the flow path of the design. The pressure accumulating tank 4 and the inner annular radial pressure accumulating tank 5 flow through the plurality of restrictors 6 installed in the hydrostatic bearing mold and the group 3 before passing through the different pressure accumulating tanks. 'The hydraulic oil after throttling flows out from the different accumulator nozzles mentioned above, and is divided into the vertical thrust in the vertical direction of the upper and lower directions and the static thrust in the horizontal direction of the I direction, and produces a variable throttling. Impedance. At this moment, the high pressure oil film filled in the axial and radial hydrostatic bearing gap will rotate. The disc floats steadily and maintains precise parallelism and verticality, so that the rotating disc can smoothly perform circular motion in a frictionless state and maintain it rigidly, regardless of the external pressure applied to the disc surface. It can be said that the plane precision can be stably rotated. • As can be seen from the foregoing, the hydrostatic bearing rotary table of the present invention can be used as a group to organize the related objects, and it is not necessary to The artificial sliding surface of the contact sliding surface or the conventional Teflon material grinding >; not only can relatively reduce the installation procedure to save man-hours, but also is very convenient in maintenance and repair. In addition, due to the rotating disk i There is no friction between the static pressure bearing module 3 and the frictional bearing module 3, so that the dynamic accuracy and service life can be improved in the case of zero wear, and the cumbersome maintenance procedure of the conventional rolling bearing rotary table can be greatly reduced in maintenance. 201219149 and the hydrostatic bearing rotary table of the present invention has the following advantages in comparison with the conventional use: L. Because of the present invention, the rotary disk 1 can be suspended in its gap with the hydrostatic bearing module 3 by the working fluid. Therefore, even if the two perform repeated circular motions at high speed, they will not generate friction heat with each other, and the thermal temperature rise and the thermal deformation can be greatly reduced, so that no matter whether the long-term or high-speed repetitive motion does not affect, The machining accuracy 'can effectively improve the quality and precision of the machined workpiece. In addition, when applied to the precision indexing split function, it is more effective in reducing the viscous slip. 2. The invention adopts the concept of the precision fluid restrictor 6 with the hydrostatic bearing, so that the pressure difference caused by the different impedances can be automatically compensated and adjusted, so that the working surface above the rotating disc 1 is always stably balanced, so even in the In the case of high load or heavy cutting, it is also possible to achieve better processing parameters than conventional rolling bearing rotary table processing. 3. The invention combines the precision fluid (4) n6 with the high M working fluid, and the high-pressure oil film produces a high degree of profitability. The bearing can withstand higher weight, and although it is non-friction, it is especially suitable for oversize and overweight. Machine application. In order to make the technical personnel who are familiar with the technology can understand the structural features of this (4) and other purposes and effects of the invention, the above-mentioned materials are supplemented and detailed with the attached drawings, but the selected examples are for the case. For the purpose of explanation, the case can still be implemented in its financial form. Therefore, those who are familiar with the technology can not be covered by the scope of the patent application in this case under the invention spirit of the invention. , special and specified. 201219149 In summary, the present invention is a hydrostatic bearing rotary table, which is mainly composed of a rotating disc having a main shaft for a radial bearing and a plurality of upper and lower annular axial accumulator grooves. A plurality of hydrostatic bearing modules with internal annular radial accumulator grooves, several throttles, an axial spacer ring, a precision nut, an oil storage tank, a transmission motor and an optimized anti-vibration base The rotating disc is of a τ-shaped structure, which can be integrally formed by a solid alloy steel (best rigidity) or divided into two parts, and is fixed by a circular rotating disc and a main shaft (but _ Pay attention to the verticality of the two). The top of the rotating disc is the work surface. A variety of τ-shaped grooves and fixed screw holes can be designed according to different requirements to facilitate the installation of fixtures with different requirements (such as cool head or disk). The peripheral part of the side is designed with a beveled taper design to facilitate the cutting out of the cutting fluid to prevent penetration into the interior of the hydrostatic bearing. The hydrostatic bearing module is also designed as a cylindrical structure. The utility model has a sloped taper drainage design, and is internally provided with an equal number of upper and lower annular axial pressure accumulation grooves and a plurality of inner annular radial pressure accumulation grooves, and an oil hole is provided in the static pressure bearing module. On the side, the hydraulic oil entering the hydrostatic bearing module can enter the upper and lower annular axial accumulator grooves along the internal design of the oil passage, which mainly provides the opposite static thrust of the upper and lower axial directions. And entering the inner ring from the direction of the pressure accumulation _ part, it is responsible for providing the radial horizontal direction to read the static pressure thrust'. The number of converters are installed in the aforementioned static dust bearing module, mainly to throttle The subsequent throttling thrust is accurately sent to the accumulator tank, and a variable throttling resistance k is generated, so that the axial and radial contact faces of the rotating disc are tightly covered in the high pressure oil film; The spacer ring mainly provides this hydrostatic bearing rotary table
S 11 201219149 =統之軸向靜壓轴承所需間隙，並由—精密螺帽進行固定；該 畜油槽主要功_為轉前騎份供油後產生之回油，由侧邊 之回油孔13接管將㈣油再導回油壓單元中，再由馬達系浦 將其注=前述之人油孔’如此不斷循環，構成—循環之流體回 路。該蓄油槽除了蓄油功能外，其側邊並設有—法蘭緣，其上 設有數量不等之_孔，方便前述之模_統可直接鎖 何工具機上以進行固定；該傳動馬達主要負責動力傳輸，可直 接傳動4藉由皮帶輪及皮帶的聯結，將動力傳輸至旋轉盤下 方之主軸，帶動旋轉盤之旋轉，透過變頻器的調整，可進行 0.1〜數千r.p.m.不同轉速的變化；該最佳化設計之高抗振基 座主要提供上述模組系統及馬達一穩定之固定介面，使流體靜 壓軸承旋•作台及馬達__紐產生過大之振動，並能 有效提供抗振阻尼，並使所有相關零組件構成一完整平台，可 應用於各種不同之工作母機平台。經由此精密設計之液靜壓軸 承旋轉工作台，可承载高度荷重，由於全非接觸式的設計及流 體作原理，可使該旋轉工作台不論在啟動、運轉或關閉情況 時，皆可保持無磨擦狀態，所以本發明除了具有極高精度及承 載剛性外’更具有極長時間的使用壽命； 由上述得知本發明確實符合「具有產業可利用性」、「新穎 性」以及「進步性」，爰依法提出發明型專利申請，祈請惠予 審查並早曰賜准專利，實感德便。 【圖式簡單說明】 12 201219149 圖1 本發明實施例組合圖一。 圖2本發明實施例組合圖二。 圖3係圖2的剖面圖。 【主要元件符號說明】 旋轉盤1 主轴2 靜壓軸承模組3 軸向蓄壓槽4 # 徑向蓄壓槽5 節流器6 轴向間隔環7 螺帽8 蓄油槽9 傳動馬達10 抗振基座11 入油孔12 • 回油孔13 £ 13S 11 201219149 =The clearance required for the axial static pressure bearing of the system is fixed by the precision nut; the main function of the oil tank is the oil return after the oil supply to the front, and the oil return hole from the side 13 takes over the (4) oil back to the hydraulic unit, and then the motor is pumped to the above-mentioned human oil hole' so that it circulates continuously to form a circulating fluid circuit. In addition to the oil storage function, the oil storage tank is provided with a flange edge on the side thereof, and a plurality of holes are provided thereon, so that the above-mentioned mold can be directly locked on the machine tool for fixing; The motor is mainly responsible for power transmission. The direct drive 4 can transmit the power to the main shaft below the rotary disc by the connection of the pulley and the belt, and drive the rotation of the rotary disc. Through the adjustment of the inverter, the speed can be 0.1 to thousands of rpm. The high-vibration base of the optimized design mainly provides a stable fixed interface of the above-mentioned module system and the motor, so that the hydrostatic bearing rotation, the table and the motor __News generate excessive vibration, and can effectively provide anti-vibration Damping and making all relevant components a complete platform for a variety of different working machine platforms. The hydrostatic bearing rotary table, which is precisely designed, can carry a high load. Due to the fully non-contact design and fluid principle, the rotary table can be kept intact regardless of starting, running or closing conditions. In the friction state, the present invention has a very long service life in addition to extremely high precision and load bearing rigidity; it is known from the above that the present invention truly conforms to "industrial availability", "novelty" and "progressiveness".爰Proposed an invention patent application in accordance with the law, praying for review and early granting of patents. BRIEF DESCRIPTION OF THE DRAWINGS 12 201219149 FIG. 1 The embodiment of the present invention is combined with FIG. FIG. 2 combines FIG. 2 with an embodiment of the present invention. Figure 3 is a cross-sectional view of Figure 2. [Description of main components] Rotary disc 1 Spindle 2 Hydrostatic bearing module 3 Axial accumulator tank 4 # Radial accumulator tank 5 Throttle 6 Axial spacer ring 7 Nut 8 Oil storage tank 9 Drive motor 10 Anti-vibration Base 11 oil inlet 12 • Oil return hole 13 £ 13