CN102312925A - A method for fixing a thrust bearing ring - Google Patents
A method for fixing a thrust bearing ring Download PDFInfo
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- CN102312925A CN102312925A CN201110223095A CN201110223095A CN102312925A CN 102312925 A CN102312925 A CN 102312925A CN 201110223095 A CN201110223095 A CN 201110223095A CN 201110223095 A CN201110223095 A CN 201110223095A CN 102312925 A CN102312925 A CN 102312925A
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Abstract
本发明涉及一种止推轴承环的固定方法,适用于精密旋转轴系中的止推轴承环在轴承座上的固定。所要解决的问题是,既能对止推轴承环固定在不同膨胀系数材料制作的轴承座上,又能在环境温度发生变化时,彼此变形造成的相互影响小,保证旋转轴系的精度。本发明通过三个径向定位块,将止推轴承环在轴承座的安装面上进行定位;在止推轴承环的径向沿圆周均布的多个通孔内,嵌入压紧套,通过穿入压紧套的螺钉将止推轴承环沿轴向限位,使止推轴承环的连接面与轴承座的安装面刚好贴合。径向定位块、压紧套与止推轴承环之间有间隙,使得止推轴承环在温度发生变化时,可以自由伸缩膨胀。
The invention relates to a fixing method of a thrust bearing ring, which is suitable for fixing the thrust bearing ring on a bearing seat in a precision rotating shaft system. The problem to be solved is that the thrust bearing ring can be fixed on the bearing seat made of materials with different expansion coefficients, and the mutual influence caused by mutual deformation is small when the ambient temperature changes, so as to ensure the accuracy of the rotating shaft system. In the present invention, the thrust bearing ring is positioned on the mounting surface of the bearing seat through three radial positioning blocks; a compression sleeve is embedded in a plurality of through holes uniformly distributed along the circumference of the thrust bearing ring in the radial direction, and through The screws inserted into the compression sleeve limit the thrust bearing ring in the axial direction, so that the connection surface of the thrust bearing ring and the mounting surface of the bearing seat just fit together. There is a gap between the radial positioning block, the compression sleeve and the thrust bearing ring, so that the thrust bearing ring can freely expand and contract when the temperature changes.
Description
技术领域 technical field
本发明涉及在旋转轴系中的止推轴承环的固定方法,特别涉及一种止推轴承环的固定方法。The invention relates to a fixing method of a thrust bearing ring in a rotating shaft system, in particular to a fixing method of a thrust bearing ring.
背景技术 Background technique
为了保证光电经纬仪垂直轴系的旋转精度,对轴系中的止推轴承环滚道面的平面度有较高的精度要求。一般是把止推轴承环固定在铸铁或铸钢的轴承座上,由于止推轴承环和轴承座膨胀系数基本一致,在环境温度变化时,对止推轴承环的影响较小。而为了减轻设备重量,轴承座的材料选用铸铝,这样就存在止推轴承环固定在与止推轴承环的膨胀系数不一致的材料上,当环境温度发生较大变化时,由于止推轴承环和轴承座的变形不一致,造成止推轴承环发生变形,影响轴系的旋转精度,进而影响光电经纬仪的测量精度。In order to ensure the rotation accuracy of the vertical shaft system of the photoelectric theodolite, there is a high precision requirement for the flatness of the raceway surface of the thrust bearing ring in the shaft system. Generally, the thrust bearing ring is fixed on the cast iron or cast steel bearing seat. Since the expansion coefficients of the thrust bearing ring and the bearing seat are basically the same, the impact on the thrust bearing ring is small when the ambient temperature changes. In order to reduce the weight of the equipment, the material of the bearing housing is cast aluminum. In this way, the thrust bearing ring is fixed on a material whose expansion coefficient is inconsistent with the thrust bearing ring. When the ambient temperature changes greatly, due to the thrust bearing ring Inconsistent with the deformation of the bearing seat, the thrust bearing ring is deformed, which affects the rotation accuracy of the shaft system, and then affects the measurement accuracy of the photoelectric theodolite.
发明内容 Contents of the invention
本发明的目的就是提供一种止推轴承环的固定方法,用以使止推轴承环固定在与止推轴承环的膨胀系数不同的材料制成的轴承座上,在环境温度发生变化时,由止推轴承环和轴承座的变形不一致造成止推轴承环发生变形较小,使旋转轴系具有较低的温度敏感性。The object of the present invention is to provide a fixing method for a thrust bearing ring, which is used to fix the thrust bearing ring on a bearing seat made of a material with a different expansion coefficient from that of the thrust bearing ring. When the ambient temperature changes, The deformation of the thrust bearing ring is small due to the inconsistent deformation of the thrust bearing ring and the bearing seat, so that the rotating shaft system has lower temperature sensitivity.
本发明提供的一种止推轴承环的固定方法,通过三个径向定位块,将止推轴承环在轴承座的安装面上进行径向定位;在止推轴承环的沿圆周均布的多个通孔内,嵌入压紧套,通过穿入压紧套的螺钉将止推轴承环沿轴向限位,使止推轴承环的连接面与轴承座的安装面刚好贴合;径向定位块和压紧套均与止推轴承环之间有间隙,使得止推轴承环在温度发生变化时,可以自由伸缩。A method for fixing a thrust bearing ring provided by the present invention uses three radial positioning blocks to radially position the thrust bearing ring on the mounting surface of the bearing housing; The compression sleeve is embedded in multiple through holes, and the thrust bearing ring is limited in the axial direction by the screw inserted into the compression sleeve, so that the connection surface of the thrust bearing ring and the installation surface of the bearing seat just fit; There is a gap between the positioning block and the compression sleeve and the thrust bearing ring, so that the thrust bearing ring can expand and contract freely when the temperature changes.
在所述的止推轴承环,在圆周方向开三个均匀分布的开槽,开槽具有相互平行的两侧面,开槽方向沿止推轴承环的径向;在一定半径的圆周上均布多个通孔。In the thrust bearing ring, three evenly distributed slots are formed in the circumferential direction, the slots have two sides parallel to each other, and the slotting direction is along the radial direction of the thrust bearing ring; evenly distributed on the circumference of a certain radius Multiple vias.
在所述的径向定位块,与止推轴承环开槽接触的两侧面,保证间隙为0.002~0.004mm;在与止推轴承环的径向有适量间隙,在环境温度发生变化时,径向定位块不与止推轴承环发生干涉。On the two sides of the radial positioning block in contact with the groove of the thrust bearing ring, the clearance is guaranteed to be 0.002-0.004mm; there is an appropriate amount of clearance in the radial direction of the thrust bearing ring, and when the ambient temperature changes, the diameter The positioning block does not interfere with the thrust bearing ring.
在所述的压紧套,其在直径方向上与止推轴承环的通孔有适量间隙,在环境温度发生变化时,压紧套不与止推轴承环通孔发生干涉;其长度比止推轴承环的通孔长0.01~0.02mm,保证在螺钉预紧后,使止推轴承环的连接面与轴承座的安装面刚好贴合。In the above-mentioned compression sleeve, there is an appropriate amount of clearance between the through hole of the thrust bearing ring in the diameter direction, and when the ambient temperature changes, the compression sleeve does not interfere with the through hole of the thrust bearing ring; The length of the through hole of the thrust bearing ring is 0.01-0.02mm, so that after the screw is pre-tightened, the connecting surface of the thrust bearing ring and the installation surface of the bearing seat just fit together.
在所述的止推轴承环的连接面与轴承座的安装面,其平面度小于0.01mm。The flatness of the connection surface of the thrust bearing ring and the installation surface of the bearing seat is less than 0.01mm.
本发明的这种止推轴承环的固定方法优点:1)结构简单可靠,实施方便;2)既能对止推轴承环固定在与止推轴承环的不同膨胀系数材料制作的轴承座上,又能在环境温度发生变化时,彼此变形造成的相互影响小,保证旋转轴系的精度,使旋转轴系具有较低的温度敏感性。The method for fixing the thrust bearing ring of the present invention has the following advantages: 1) the structure is simple and reliable, and the implementation is convenient; 2) the thrust bearing ring can be fixed on a bearing housing made of a material with a different expansion coefficient from the thrust bearing ring, Moreover, when the ambient temperature changes, the mutual influence caused by mutual deformation is small, ensuring the precision of the rotating shaft system, and making the rotating shaft system have lower temperature sensitivity.
附图说明 Description of drawings
图1为本发明的一种止推轴承环的固定方法固定完成时形成的结构主视图;Fig. 1 is a front view of the structure formed when the fixing method of a thrust bearing ring of the present invention is completed;
图2为图1的局部放大图;Figure 2 is a partially enlarged view of Figure 1;
图3为本发明中的止推轴承环的结构图;Fig. 3 is the structural diagram of the thrust bearing ring among the present invention;
图4为本发明中的径向定位块的结构图;Fig. 4 is the structural diagram of the radial positioning block among the present invention;
图5为本发明中的压紧套的结构图。Fig. 5 is a structural diagram of the compression sleeve in the present invention.
具体实施方式 Detailed ways
下面结合附图,具体介绍本发明的实施方式。The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
如图1、2所示,1为轴承座、2为止推轴承环、3为普通圆柱销、4为弹簧垫圈、5为内六角圆柱头螺钉(M4)、6为径向定位块、7为压紧套、8为内六角圆柱头螺钉(M8)、9为平垫圈。As shown in Figures 1 and 2, 1 is the bearing seat, 2 is the thrust bearing ring, 3 is the ordinary cylindrical pin, 4 is the spring washer, 5 is the hexagon socket head screw (M4), 6 is the radial positioning block, and 7 is the Compression sleeve, 8 are hexagon socket head cap screws (M8), and 9 are flat washers.
将止推轴承环2放在轴承座1的安装面上,在径向定位块6上放弹簧垫圈4,再用内六角圆柱头螺钉(M4)5将径向定位块6安装在轴承座1上,配研径向定位块6两侧面间的厚度,该径向定位块6两侧面与止推轴承环2开槽的两侧面接触,保证径向定位块6与止推轴承环2开槽接触的两侧面的接触面间的间隙为0.002~0.004mm,并在径向定位块6与止推轴承环2的径向有间隙L1;将压紧套7放入止推轴承环2通孔内,压紧套7外圆与止推轴承环2通孔留有间隙L2,修磨压紧套7的高度,保证压紧套7高出止推轴承环2面0.01~0.02mm,在压紧套7上放平垫圈9,然后用内六角圆柱头螺钉(M8)8穿入压紧套7拧入轴承座1的螺孔,给内六角圆柱头螺钉(M8)8预紧,使止推轴承环2的连接面与轴承座1的安装面刚好贴合。Put the thrust bearing
所述间隙L1、L2与轴承座1、止推轴承环2所选用的材料及轴承座1上固定螺钉孔分布的直径尺寸有关。The gaps L1 and L2 are related to the materials selected for the bearing seat 1 and the thrust bearing
如特定的实施实例所示,轴承座1材料选用铸铝,膨胀系数2.4×10-5,止推轴承环2材料为轴承钢,膨胀系数1.2×10-5,轴承座1上用于固定径向定位块6的螺孔分布直径尺寸为367mm,用于止推轴承环2轴向限位的螺孔分布直径尺寸为421mm,环境温度变化范围80℃(-35℃~+45℃),则:As shown in the specific implementation example, the material of the bearing seat 1 is cast aluminum with an expansion coefficient of 2.4×10 -5 , and the material of the thrust bearing
L1=(2.4-1.2)×10-5×367×80/2≥0.2mmL1=(2.4-1.2)× 10-5 ×367×80/2≥0.2mm
L2=(2.4-1.2)×10-5×421×80/2≥0.21mmL2=(2.4-1.2)× 10-5 ×421×80/2≥0.21mm
所述止推轴承环2、径向定位块6、压紧套7的材料选用钢。The materials of the thrust bearing
Claims (10)
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CN 201110223095 CN102312925B (en) | 2011-08-05 | 2011-08-05 | Method for fixing thrust bearing ring |
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CN 201110223095 CN102312925B (en) | 2011-08-05 | 2011-08-05 | Method for fixing thrust bearing ring |
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CN102312925B CN102312925B (en) | 2013-03-06 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102537089A (en) * | 2012-02-15 | 2012-07-04 | 中国科学院光电技术研究所 | Shafting mechanical structure for eliminating thermal stress and thermal gap between different materials |
CN102588430A (en) * | 2012-02-15 | 2012-07-18 | 中国科学院光电技术研究所 | Shafting mechanical structure capable of adapting to large temperature change range |
CN105973191A (en) * | 2016-06-16 | 2016-09-28 | 中国科学院西安光学精密机械研究所 | Multi-load universal tracking platform |
CN106460577A (en) * | 2014-06-25 | 2017-02-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Hybrid bearing block for a camshaft |
CN114261679A (en) * | 2020-12-23 | 2022-04-01 | 武昌船舶重工集团有限公司 | A water tank translation tool |
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CN102588430A (en) * | 2012-02-15 | 2012-07-18 | 中国科学院光电技术研究所 | Shafting mechanical structure capable of adapting to large temperature change range |
CN102537089B (en) * | 2012-02-15 | 2014-03-26 | 中国科学院光电技术研究所 | Shafting mechanical structure for eliminating thermal stress and thermal gap between different materials |
CN106460577A (en) * | 2014-06-25 | 2017-02-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Hybrid bearing block for a camshaft |
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CN105973191A (en) * | 2016-06-16 | 2016-09-28 | 中国科学院西安光学精密机械研究所 | Multi-load universal tracking platform |
CN105973191B (en) * | 2016-06-16 | 2018-05-29 | 中国科学院西安光学精密机械研究所 | A Multi-Load Universal Tracking Platform |
CN114261679A (en) * | 2020-12-23 | 2022-04-01 | 武昌船舶重工集团有限公司 | A water tank translation tool |
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