WO2012119320A1 - 一种液体静压直线导轨结构 - Google Patents

一种液体静压直线导轨结构 Download PDF

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Publication number
WO2012119320A1
WO2012119320A1 PCT/CN2011/071807 CN2011071807W WO2012119320A1 WO 2012119320 A1 WO2012119320 A1 WO 2012119320A1 CN 2011071807 W CN2011071807 W CN 2011071807W WO 2012119320 A1 WO2012119320 A1 WO 2012119320A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide rail
hydrostatic
pressure plate
linear guide
slider
Prior art date
Application number
PCT/CN2011/071807
Other languages
English (en)
French (fr)
Inventor
贺大兴
李云飞
王春光
Original Assignee
北京工研精机股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京工研精机股份有限公司 filed Critical 北京工研精机股份有限公司
Publication of WO2012119320A1 publication Critical patent/WO2012119320A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/02—Sliding-contact bearings
    • F16C29/025—Hydrostatic or aerostatic

Definitions

  • the utility model relates to the field of precision numerical control machine tools, in particular to a hydrostatic linear guide rail structure.
  • the existing hydrostatic guide rails are divided into open rails and closed rails in the form of structures due to the different load conditions of the rails.
  • the open static pressure rail relies on the self-weight and external load of the moving member to keep the moving member from separating from the bed, and it belongs to the force closed form.
  • Open hydrostatic guides often have an oil chamber only in one direction of the guide rail and can only be placed horizontally or tilted a small angle.
  • the main structural forms are: rectangular flat guide rails, V flat guide rails, rotary flat guide rails, and silent guide rails.
  • the closed hydrostatic guide has only one degree of freedom in its direction of movement, and the remaining degrees of freedom are constrained by the rail structure (also known as geometric closure). Its main structural forms are: wide double rectangle, ceiling double rectangle, rotary flat rail, diamond rail and so on.
  • the object of the present invention is to solve the above-mentioned shortcomings of the prior art, and to provide a structure of a hydrostatic linear guide rail, which has a unique shape, is easy to standardize and has a small size, and can sufficiently reduce the time and cost required for installation and commissioning. Effectively reduce the manufacturing time and cost of the machine tool.
  • the present invention provides a hydrostatic linear guide rail structure, comprising a guide rail and a moving member, wherein the three pairs of surfaces in contact with the moving member are parallel to each other, and a plurality of static pressure chambers are arranged between the contact surfaces.
  • the moving member is assembled by a slider and a pressure plate, and both the slider and the pressure plate are in contact with at least two faces of the guide rail, and at least one static pressure cavity is disposed on the contact surface.
  • the guide rail is a double-shaped rectangular rail having a T-shaped cross section; the gap between the contact surface of the static pressure chamber and the rail is 0. 015-0. 03 ⁇ ; Platen pass Screw fastening assembly.
  • the number of the static pressure chambers is six; the static pressure chambers are disposed on three pairs of surfaces that are relatively parallel.
  • the guide rail, slider and pressure plate structure are standardized and small in size, easy to assemble and debug, and effectively reduce costs;
  • FIG. 1 is a cross-sectional view showing the structure of a hydrostatic linear guide according to the present invention.
  • the present invention is composed of a guide rail 1, a slider 2, and a pressure plate 3.
  • the guide rail is a fixed, linear member; it is supported by the static pressure chamber 4 between the moving member, including the slider 2 and the pressure plate 3.
  • the static pressure chambers 4 are evenly distributed on the slider 2 and the pressure plate 3.
  • four static pressure chambers 4 are symmetrically disposed on the slider 2, and two static pressure chambers 4 are symmetrically disposed on the pressure plate 3, and the three pairs of surfaces of the guide rail 1 and the static pressure chamber 4 are in contact with each other. parallel.
  • the guide rail 1 is fixed to the machine base 5 (also other fixing parts such as the bed or parts) by screws or other means, and the slider 2 and the pressure plate 3 are fastened by screws and cooperate with the guide rail 1.
  • the moving element (slider 2 and platen 3) is moved along the guide rail 1 by passing high-pressure liquid into the slider 2 and the pressure plate 3.
  • the guide rail 1 has a T-shaped cross section, and the respective opposite surfaces of the transverse portion of the cross section are parallel to each other and are in contact with the six static pressure chambers 4.
  • the gap between the surface of the six static pressure chambers 4 and the support surface of the guide rail 1 is 0. 01.
  • the gap between the surface of the six static pressure chambers 4 and the support surface of the guide rail 1 is 0.11. 5-0. 03

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Machine Tool Units (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Description

一种液体静压直线导轨结构
技术领域
本实用新型涉及精密数控机床领域， 尤其涉及一种液体静压直线导轨结 构。
背景技术
目前， 现有的液体静压导轨， 由于导轨承受的载荷情况不同， 在结构形 式上有开式导轨和闭式导轨之分。
开式静压导轨依靠运动件的自重及外载荷保持移动件不从床身上分离， 它属于力封闭形式。 开式静压导轨往往只在导轨的一个方向上开有油腔， 只 能水平放置或倾斜一个较小的角度。其主要结构形式有： 矩形平导轨， V平 形导轨， 回转平导轨， 默 Ί 形导轨等。
闭式静压导轨只有在其移动方向的一个自由度，其余自由度都由导轨结 构所约束（也称几何封闭）。 其主要结构形式有： 宽式双矩形， 宿式双矩形， 回转平导轨， 菱形导轨等。
但是， 无论上述哪种结构， 都存在液体静压导轨的结构无法标准化， 安 装与调试需要浪费大量的时间和费用， 增加机床的制造时间及成本的问题。
实用新型内容
本实用新型的目的在于解决现有技术的上述缺点，提供一种液体静压直 线导轨的结构， 该结构的独特形状， 易于标准化且尺寸小巧， 能充分减少安 装与调试所需的时间与费用， 有效减少机床的制造时间及成本。
为解决上述技术问题， 本实用新型提供一种液体静压直线导轨结构， 包 括导轨和运动件， 所述导轨与运动件相接触的三对表面彼此平行，接触面间 设置有若干静压腔体， 所述运动件由滑块和压板装配而成， 所述滑块和压板 均至少与导轨的两个面接触， 所述接触面上至少设置有一个静压腔体。
优选的实施方式中， 所述导轨是横截面呈 T字形的双矩形轨； 所述静压 腔体与导轨接触面之间的间隙范围为 0. 015-0. 03匪； 所述滑块和压板通过 螺釘紧固装配。 所述静压腔体的数量为 6个； 所述静压腔体设置于相对平行 的三对表面上。
本实用新型具有下列优点：
( 1 )导轨、 滑块和压板结构标准化且尺寸小巧， 易于装配和调试， 有 效减少成本；
( 2 )静压腔体的分布设置， 便于调整油膜和控制载荷分布。
附图说明
图 1为本实用新型一种液体静压直线导轨结构的剖面图。
具体实施方式
下面结合附图对本实用新型的优选实施方式进行详细说明。
参照图 1所示的剖面图， 本实用新型由导轨 1、 滑块 2及压板 3构成。 导轨为固定不动、 呈直线的元件； 它与运动件， 包括滑块 2及压板 3之间通 过静压腔体 4支撑。 该静压腔体 4平均分布设置在滑块 2及压板 3上。 在本 实施例中， 滑块 2上对称设置有四个静压腔体 4 , 压板 3上对称设置有两个 静压腔体 4，导轨 1与静压腔体 4相接触的三对表面彼此平行。
使用时， 将导轨 1通过螺釘或者其他方式固定在机床底座 5 (也可以是 其他固定件， 如床身或部件）上， 滑块 2与压板 3通过螺釘紧固， 并与导轨 1配合。 在滑块 2及压板 3中通入高压液体， 就可以实现运动原件（滑块 2 和压板 3 ) 沿着导轨 1移动。
导轨 1横截面呈 T字形， 截面横向部分的各个相对表面互相平行， 并与 六个静压腔体 4相接触。 滑块 2、 压板 3中设置有静压腔体 4 , 装配好整个 液体静压直线导轨后，六个静压腔体 4的表面与导轨 1中的支撑面之间的间 隙范围为 0. 01 5-0. 03
最后需要说明的是， 以上所述仅为本实用新型的较佳实施例， 而不是对 本实用新型技术方案的限定，任何对本实用新型技术特征所做的等同替换或 相应改进， 仍在本实用新型的保护范围之内。

Claims

权 利 要 求 书
1. 一种液体静压直线导轨结构， 包括导轨和运动件， 所述导轨与运动 件相接触的三对表面彼此平行，其特征在于， 导轨与运动件相接触的表面间 设置有若干静压腔体， 所述运动件由滑块和压板装配而成， 所述滑块和压板 均至少与导轨的两个面接触， 所述接触面上至少设置有一个静压腔体。
2.如权利要求 1所述的液体静压直线导轨结构， 其特征在于， 所述导轨 是横截面呈 T字形的双矩形轨。
3.如权利要求 1所述的液体静压直线导轨结构， 其特征在于， 所述静压 腔体与导轨接触面之间的间隙范围为 0. 015-0. 03
4.如权利要求 1所述的液体静压直线导轨结构， 其特征在于， 所述滑块 和压板通过螺釘紧固装配。
5. 如权利要求 1所述的液体静压直线导轨结构， 其特征在于， 所述静 压腔体的数量为 6个。
PCT/CN2011/071807 2011-03-05 2011-03-15 一种液体静压直线导轨结构 WO2012119320A1 (zh)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
JP2018502260A (ja) * 2014-12-29 2018-01-25 蘇州蘇試試験儀器股▲ふん▼有限公司 自己調整型静圧フラットレール
CN112122946A (zh) * 2020-08-27 2020-12-25 森合(天津)科技有限公司 一种高精度闭式内反馈静压直线导轨

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201906994U (zh) * 2011-03-05 2011-07-27 北京工研精机股份有限公司 一种液体静压直线导轨结构
CN105458733B (zh) * 2015-12-18 2018-09-18 湖北九洲数控机床有限责任公司 一种双轨闭式静压导轨
CN108127417B (zh) * 2017-12-12 2023-08-22 上海机床厂有限公司 静压支承型大型精密机床横梁导轨结构及加工装配方法
CN112096421A (zh) * 2020-09-29 2020-12-18 湖南五新隧道智能装备股份有限公司 一种臂架移动式拱架安装车

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CN1763389A (zh) * 2005-11-19 2006-04-26 潘旭华 一种闭式静压导轨及其制造方法
CN101829904A (zh) * 2010-01-26 2010-09-15 西安交通大学 一种闭式静压导轨
CN201906994U (zh) * 2011-03-05 2011-07-27 北京工研精机股份有限公司 一种液体静压直线导轨结构

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JP2000120685A (ja) * 1998-10-19 2000-04-25 Nsk Ltd 静圧空気軸受直線案内装置
CN1763389A (zh) * 2005-11-19 2006-04-26 潘旭华 一种闭式静压导轨及其制造方法
CN101829904A (zh) * 2010-01-26 2010-09-15 西安交通大学 一种闭式静压导轨
CN201906994U (zh) * 2011-03-05 2011-07-27 北京工研精机股份有限公司 一种液体静压直线导轨结构

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018502260A (ja) * 2014-12-29 2018-01-25 蘇州蘇試試験儀器股▲ふん▼有限公司 自己調整型静圧フラットレール
CN112122946A (zh) * 2020-08-27 2020-12-25 森合(天津)科技有限公司 一种高精度闭式内反馈静压直线导轨
CN112122946B (zh) * 2020-08-27 2022-04-19 森合(天津)科技有限公司 一种高精度闭式内反馈静压直线导轨

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