CN111577764B - 一种流体静压轴承、流体静压转台和流体静压主轴 - Google Patents

一种流体静压轴承、流体静压转台和流体静压主轴 Download PDF

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CN111577764B
CN111577764B CN202010421847.2A CN202010421847A CN111577764B CN 111577764 B CN111577764 B CN 111577764B CN 202010421847 A CN202010421847 A CN 202010421847A CN 111577764 B CN111577764 B CN 111577764B
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annular
hole seam
annular hole
seam
sleeve
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CN111577764A (zh
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王波
吴言功
乔政
丁飞
韩睿
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Harbin Bozhong Teda Optical Precision Machinery Technology Co ltd
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Harbin Institute of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F16C32/0614Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70Stationary or movable members for carrying working-spindles for attachment of tools or work
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0629Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
    • F16C32/064Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0629Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
    • F16C32/064Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
    • F16C32/0651Details of the bearing area per se
    • F16C32/0655Details of the bearing area per se of supply openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0662Details of hydrostatic bearings independent of fluid supply or direction of load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • F16C32/0696Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for both radial and axial load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2322/00Apparatus used in shaping articles
    • F16C2322/39General buildup of machine tools, e.g. spindles, slides, actuators

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

为了提供一种结构简单、加工方便、稳定性好、回转精度高的流体静压轴承,本发明记载一种流体静压轴承,包括主轴和轴套,主轴为中部设置有环状凸缘的圆柱状结构,轴套为中部设置有环状凹槽的圆柱筒状结构,轴套套设在主轴上,环状凸缘位于环状凹槽内部,位于环状凸缘上方的圆柱状结构与轴套之间设置有环形孔缝Ⅰ,位于环状凸缘下方的圆柱状结构与轴套之间设置有环形孔缝Ⅱ,环状凸缘的上表面与轴套之间设置有环形孔缝Ⅲ,所述环状凸缘的下表面与轴套之间设置有环形孔缝Ⅳ,环形孔缝Ⅰ、环形孔缝Ⅱ、环形孔缝Ⅲ和环形孔缝Ⅳ的纵剖面均呈阶梯状结构。本发明零件数量少,加工简单,装配方便,无需额外安装节流器,工作时更加稳定,可靠度更高。

Description

一种流体静压轴承、流体静压转台和流体静压主轴
技术领域
本发明属于静压滑动轴承领域,具体涉及一种流体静压轴承、流体静压转台和流体静压主轴。
背景技术
静压滑动轴承通常选用流体(液体、气体等)作为润滑剂,依靠外界提供的压力源在主轴周围形成润滑膜,所述润滑膜可将主轴完全浮起,并为主轴提供支撑刚度,静压滑动轴承的最显著优点是精度高,润滑膜具有误差均化效果,减小工件加工误差对于回转精度的影响,静压滑动轴承相比于动压滑动轴承润滑膜更加稳定,主轴在低速运行或高速运行时润滑膜都能保持完整,理论上可以在完全无磨损的情况下工作。静压滑动轴承采用液体润滑剂时,液压系统可承受高压力,轴承具有更高的刚度与承载能力,但发热量较大,通常需要配备冷却设备;采用气体润滑剂时,由于气膜的可压缩性,主轴回转精度更高,且气膜摩擦小,可实现低速无爬行与低发热量,缺点是承载能力不如液体静压滑动轴承,随着技术的进步,这一缺点已经有了很大程度的改善。静压滑动轴承在精密与超精密设备中有着广泛的应用。
目前气体静压滑动轴承主要有三种节流方式,小孔式节流、多孔质节流和狭缝节流。小孔式节流通常是在主轴的径向、止推方向环向布置节流器,主轴越大,需要的节流器就越多,数量如此之多的节流器会增大装配难度,无法保证每个节流器安装状态相同,一旦有一个漏气就会对回转精度造成影响,而且通入气压过大容易产生气锤现象,严重影响精度;多孔质节流,采用多孔质材料作为节流器,缺点是不易保证节流器各处气体渗透率相同,多孔质材料易被灰尘杂质堵塞,导致轴承失效,当供气压力变化时,响应较慢;狭缝节流对于加工精度要求高,要保证狭缝间隙在10μm附近,狭缝加工困难,故应用程度相对较低。
发明内容
本发明的第一个目的是提供一种结构简单、加工方便、稳定性好、回转精度高的流体静压轴承。
本发明的第二个目的是提供一种流体静压转台。
本发明的第三个目的是提供一种流体静压主轴。
为实现上述目的,本发明采取的技术方案如下:
一种流体静压轴承,包括主轴和轴套,所述主轴为中部设置有环状凸缘的圆柱状结构,所述轴套为中部设置有环状凹槽的圆柱筒状结构,所述轴套套设在主轴上,所述环状凸缘位于环状凹槽内部,位于环状凸缘上方的圆柱状结构与轴套之间设置有环形孔缝Ⅰ,位于环状凸缘下方的圆柱状结构与轴套之间设置有环形孔缝Ⅱ,所述环形孔缝Ⅰ和环形孔缝Ⅱ结构相同且相互对称,所述环形孔缝Ⅰ和环形孔缝Ⅱ的纵剖面均呈阶梯状结构,所述环状凸缘的上表面与轴套之间设置有环形孔缝Ⅲ,所述环状凸缘的下表面与轴套之间设置有环形孔缝Ⅳ,所述环形孔缝Ⅲ和环形孔缝Ⅳ结构相同且相互对称,所述环形孔缝Ⅲ和环形孔缝Ⅳ的纵剖面均呈阶梯状结构,所述环形孔缝Ⅰ与环形孔缝Ⅲ连通,所述环形孔缝Ⅱ与环形孔缝Ⅳ连通。
一种流体静压转台:包括所述的流体静压轴承和转台底座,所述转台底座位于轴套的下方且与轴套固定连接。
一种流体静压主轴:包括所述的流体静压轴承和主轴底座,所述主轴底座位于轴套的下方且与轴套固定连接。
本发明相对于现有技术的有益效果是:
1)采用台阶节流方式,主轴周围润滑膜压力分布更加均匀,主轴回转更加平稳,具有更好的误差均化效果,工作精度更高。
2)轴承结构简单,零件数量少,加工简单,装配方便,无需额外安装节流器,工作时更加稳定,可靠度更高。
3)当润滑剂为气体时,轴承可通入0.2-2.5MPa的高压气源,能够大大提高轴承刚度与承载能力,且不会出现气锤现象。
附图说明
图1为本发明纵向剖视图。
图2为本发明流体流动方向示意图。
图3为本发明应用于转台的结构示意图。
图4为本发明应用于卧式主轴的结构示意图。
图中:1、主轴,2、轴套,3、环形孔缝Ⅰ,4、环形孔缝Ⅱ,5、环形孔缝Ⅲ,6、环形孔缝Ⅳ,7、环形孔缝Ⅴ,8、进孔,9、出孔,10、工作台,11、环状凸缘,12、倒角Ⅰ,13、倒角Ⅱ,14、转台底座,15、主轴底座,21、上轴套,22、下轴套。
具体实施方式
下面结合具体实施方式和附图对本发明的技术方案作进一步的说明,但并不局限于此,凡是对本发明技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围,均应涵盖在本发明的保护范围中。在本发明的描述中,需要理解的是:术语“上”“下”“水平”“纵向”等指示方位的词语只是为了便于描述本发明,而不是指示或暗示所指的元件必须具有特定的方位,因此不能理解为对本发明的具体限定。
本发明中,主轴是个圆柱面,圆柱面的母线方向称为轴向,同一圆截面上的半径方向称为径向。
具体实施方式一
一种流体静压轴承,包括主轴1和轴套2,所述主轴1为中部设置有环状凸缘11的圆柱状结构,所述主轴1的纵剖面呈“中”字型结构,所述轴套2为中部设置有环状凹槽的圆柱筒状结构,所述轴套2套设在主轴1上,并保持主轴1和轴套2具有
Figure BDA0002497249480000031
的同轴度,所述环状凸缘11位于环状凹槽内部,所述轴套2与主轴1之间保持2-30μm的间隙,位于环状凸缘11上方的圆柱状结构与轴套2之间设置有环形孔缝Ⅰ3,位于环状凸缘11下方的圆柱状结构与轴套2之间设置有环形孔缝Ⅱ4,所述环形孔缝Ⅰ3和环形孔缝Ⅱ4结构相同且相互对称,所述环形孔缝Ⅰ3和环形孔缝Ⅱ4的纵剖面均呈阶梯状结构,所述环形孔缝Ⅰ3和环形孔缝Ⅱ4的缝隙宽度均为2-30μm;所述环状凸缘11的上表面与轴套2之间设置有环形孔缝Ⅲ5,所述环状凸缘11的下表面与轴套2之间设置有环形孔缝Ⅳ6,所述环形孔缝Ⅲ5和环形孔缝Ⅳ6结构相同且相互对称,所述环形孔缝Ⅲ5和环形孔缝Ⅳ6的纵剖面均呈阶梯状结构,所述环形孔缝Ⅲ5和环形孔缝Ⅳ6的缝隙宽度均为2-30μm;所述环形孔缝Ⅰ3与环形孔缝Ⅲ5连通,所述环形孔缝Ⅱ4与环形孔缝Ⅳ6连通。
进一步的,所述流体静压轴承还包括工作台10,所述工作台10位于主轴1和轴套2的上方并固定在主轴1上,所述工作台10随主轴1做回转运动。
进一步的,所述环形孔缝Ⅰ3从下至上,阶梯的走向从高至低;所述环形孔缝Ⅱ4从上至下,阶梯的走向从高至低;所述环形孔缝Ⅲ5和环形孔缝Ⅳ6,从圆柱状结构的外侧壁处至环状凸缘11的外侧壁处,阶梯的走向从高至低。
优选的,阶梯状结构的环形孔缝Ⅰ3、环形孔缝Ⅱ4、环形孔缝Ⅲ5和环形孔缝Ⅳ6的台阶均有两个。
进一步的,所述环状凸缘11的外侧壁与轴套2之间设置有环形孔缝Ⅴ7,所述环形孔缝Ⅴ7的上下两端分别与环形孔缝Ⅲ5和环形孔缝Ⅳ6连通。
进一步的,所述轴套2上设置有两个进孔8和一个出孔9,两个进孔8关于轴套2中心的水平面上下对称设置在轴套2的外侧壁上,位于上方的进孔8通过流道与环形孔缝Ⅰ3和环形孔缝Ⅲ5的交界处连通;位于下方的进孔8通过流道与环形孔缝Ⅱ4和环形孔缝Ⅳ6的交界处连通;所述出孔9设置在与进孔8相对的轴套2的外侧壁上且位于轴套2中心的水平面上,所述出孔9通过流道与环形孔缝Ⅴ7的中部连通。
进一步的,所述环形孔缝Ⅰ3和环形孔缝Ⅲ5的交界处设置有倒角Ⅰ12,所述环形孔缝Ⅱ4和环形孔缝Ⅳ6的交界处设置有倒角Ⅱ13,位于上方的进孔8通过流道与倒角Ⅰ12连通,位于下方的进孔8通过流道与倒角Ⅱ13连通。优选的,所述倒角Ⅰ12和倒角Ⅱ13均为环形倒角,所述环形倒角的纵剖面为矩形。所述倒角Ⅰ12和倒角Ⅱ13可将点状压力源迅速变为线性压力源,使主轴表面的润滑膜压力分布更加均匀。
进一步的,所述环形孔缝Ⅰ3和环形孔缝Ⅱ4均设置在轴套2的内侧壁上,或者,所述环形孔缝Ⅰ3和环形孔缝Ⅱ4均设置在主轴1的外侧壁上。
进一步的,所述环形孔缝Ⅲ5和环形孔缝Ⅳ6分别设置在环状凸缘11的上表面和下表面,或者,所述环形孔缝Ⅲ5和环形孔缝Ⅳ6分别设置在环状凹槽的上壁和下壁上。
优选的,所述轴套2包括上下设置的上轴套21和下轴套22,所述上轴套21的下表面与下轴套22的上表面通过螺栓固定连接,构成中部为环状凹槽的圆柱筒状结构。
进一步的,所述主轴1的中部设置有上下贯通的通孔,可用于通过电缆,或制作成为真空气道,上端配合真空吸盘安装工件。
流体的流动路线如图2所示,经上、下两个进孔8通入的润滑剂经过流道分别流入倒角Ⅰ12和倒角Ⅱ13,然后通入环形孔缝Ⅰ3、环形孔缝Ⅱ4、环形孔缝Ⅲ5、环形孔缝Ⅳ6和环形孔缝Ⅴ7,经轴套2上、下两个端面和出孔9流出。
经进孔8向轴套2内通入高压润滑剂后,点状压力源会在倒角处变为线性压力源,随后在主轴1与轴套2间形成压力分布均匀的润滑膜,润滑膜将主轴1浮起,阶梯状结构的环形孔缝Ⅰ3、环形孔缝Ⅱ4、环形孔缝Ⅲ5和环形孔缝Ⅳ6将润滑膜变为阶梯形,阶梯形结构的润滑膜起到节流作用,在无外加节流器的情况下为主轴1提供径向刚度和闭氏轴向刚度,保证工作台10具有高回转精度。
本发明提出台阶节流方式无需外加节流器,通过台阶润滑膜就可以为主轴1提供径向刚度与闭式轴向刚度,本发明的刚度、承载力与润滑剂粘度无关,所以润滑剂可为液体也可为气体,本发明结构简单,加工制造容易,润滑膜在主轴1周围分布更加均匀,有着更高的回转精度。采用气体润滑剂时,可通入更高压气体,提高刚度与承载力,且不产生气锤现象。
润滑剂选择气体时可以在高速运转时保持小发热量,润滑剂选择液体时可以实现高刚度与高承载。润滑剂选择气体时,气源压力可根据需要在0.2-2.5MPa范围内选择,不产生气锤现象,当润滑剂选择液体时,液源压力可在0.5-5.0MPa内选择。
具体实施方式二
一种流体静压转台,包括具体实施方式一所述的流体静压轴承和转台底座14,所述转台底座14位于轴套2的下方且与轴套2固定连接定位,如图3所示。
具体实施方式三
一种表面节流的流体静压主轴:包括具体实施方式一所述的流体静压轴承和主轴底座15,所述主轴底座15位于轴套2的下方且与轴套2固定连接,如图4所示。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

1.一种流体静压轴承,其特征在于:包括主轴(1)和轴套(2),所述主轴(1)为中部设置有环状凸缘(11)的圆柱状结构,所述轴套(2)为中部设置有环状凹槽的圆柱筒状结构,所述轴套(2)套设在主轴(1)上,所述环状凸缘(11)位于环状凹槽内部,位于环状凸缘(11)上方的圆柱状结构与轴套(2)之间设置有环形孔缝Ⅰ(3),位于环状凸缘(11)下方的圆柱状结构与轴套(2)之间设置有环形孔缝Ⅱ(4),所述环形孔缝Ⅰ(3)和环形孔缝Ⅱ(4)结构相同且相互对称,所述环形孔缝Ⅰ(3)和环形孔缝Ⅱ(4)的纵剖面均呈阶梯状结构,所述环状凸缘(11)的上表面与轴套(2)之间设置有环形孔缝Ⅲ(5),所述环状凸缘(11)的下表面与轴套(2)之间设置有环形孔缝Ⅳ(6),所述环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6)结构相同且相互对称,所述环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6)的纵剖面均呈阶梯状结构,所述环形孔缝Ⅰ(3)与环形孔缝Ⅲ(5)连通,所述环形孔缝Ⅱ(4)与环形孔缝Ⅳ(6)连通。
2.根据权利要求1所述的一种流体静压轴承,其特征在于:所述环形孔缝Ⅰ(3)从下至上,阶梯的走向从高至低;所述环形孔缝Ⅱ(4)从上至下,阶梯的走向从高至低;所述环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6),从圆柱状结构的外侧壁处至环状凸缘(11)的外侧壁处,阶梯的走向从高至低。
3.根据权利要求1所述的一种流体静压轴承,其特征在于:所述环状凸缘(11)的外侧壁与轴套(2)之间设置有环形孔缝Ⅴ(7),所述环形孔缝Ⅴ(7)的上下两端分别与环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6)连通。
4.根据权利要求3所述的一种流体静压轴承,其特征在于:所述轴套(2)上设置有两个进孔(8)和一个出孔(9),两个进孔(8)上下对称设置在轴套(2)的外侧壁上,位于上方的进孔(8)通过流道与环形孔缝Ⅰ(3)和环形孔缝Ⅲ(5)的交界处连通;位于下方的进孔(8)通过流道与环形孔缝Ⅱ(4)和环形孔缝Ⅳ(6)的交界处连通;所述出孔(9)设置在与进孔(8)相对的轴套(2)的外侧壁上,所述出孔(9)通过流道与环形孔缝Ⅴ(7)的中部连通。
5.根据权利要求1所述的一种流体静压轴承,其特征在于:所述流体静压轴承还包括工作台(10),所述工作台(10)位于主轴(1)和轴套(2)的上方并固定在主轴(1)上。
6.根据权利要求1所述的一种流体静压轴承,其特征在于:所述环形孔缝Ⅰ(3)和环形孔缝Ⅱ(4)均设置在轴套(2)的内侧壁上,或者,所述环形孔缝Ⅰ(3)和环形孔缝Ⅱ(4)均设置在主轴(1)的外侧壁上。
7.根据权利要求1所述的一种流体静压轴承,其特征在于:所述环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6)分别设置在环状凸缘(11)的上表面和下表面,或者,所述环形孔缝Ⅲ(5)和环形孔缝Ⅳ(6)分别设置在环状凹槽的上壁和下壁上。
8.根据权利要求4所述的一种流体静压轴承,其特征在于:所述环形孔缝Ⅰ(3)和环形孔缝Ⅲ(5)的交界处设置有倒角Ⅰ(12),所述环形孔缝Ⅱ(4)和环形孔缝Ⅳ(6)的交界处设置有倒角Ⅱ(13),位于上方的进孔(8)通过流道与倒角Ⅰ(12)连通,位于下方的进孔(8)通过流道与倒角Ⅱ(13)连通。
9.一种流体静压转台:其特征在于:包括权利要求1-8任一权利要求所述的流体静压轴承和转台底座(14),所述转台底座(14)位于轴套(2)的下方且与轴套(2)固定连接。
10.一种流体静压主轴:其特征在于:包括权利要求1-8任一权利要求所述的流体静压轴承和主轴底座(15),所述主轴底座(15)位于轴套(2)的下方且与轴套(2)固定连接。
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FR1564044A (zh) * 1968-03-07 1969-04-18
CN105424361A (zh) * 2015-12-13 2016-03-23 北京工业大学 一种可变更节流器的液体闭式静压转台实验装置
CN210435727U (zh) * 2019-08-20 2020-05-01 江苏集萃精凯高端装备技术有限公司 一种气体静压转台

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FR1564044A (zh) * 1968-03-07 1969-04-18
CN105424361A (zh) * 2015-12-13 2016-03-23 北京工业大学 一种可变更节流器的液体闭式静压转台实验装置
CN210435727U (zh) * 2019-08-20 2020-05-01 江苏集萃精凯高端装备技术有限公司 一种气体静压转台

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