液体动压轴承微型沟槽的加工方法
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摘要
提出了一种用于加工小型液体动压轴承微型人字槽的方法,并使用ABAQUS软件对该方法的加工过程进行了有限元仿真分析。通过对模具下压深度为32μm的情形进行分析,发现人字槽尖部的成形深度最大,而尾部的成形深度最小;通过对模具4种不同的下压深度(20μm、24μm、28μm、32μm)所得到的人字槽加工深度进行分析,发现回弹后人字槽的加工深度与模具下压深度基本呈线性关系。对人字槽模具的尖部尺寸进行了优化设计,获得了形状和尺寸均匀的人字形沟槽,并确定了各加工阶段的载荷大小。本方法可以降低现有微型人字槽加工方法的加工成本,提高加工效率,使小型液体动压轴承批量化生产变为可能。
In this paper,a method to process the microgroove of hydrodynamic bearing is presented,and ABAQUS software is employed to analyze the processing. By analyzing the case of pressing depth of 32μm,it is found that the largest forming depth lies at the tip of the herringbone groove and the smallest one at the tail. Through the analysis of the forming depth at four different pressing depths( 20 μm,24μm,28 μm,32 μm) of the upper die,it is discovered that the forming depth of the herringbone groove after springback changes near linearly with the pressing depth. The dimension of the herringbone groove die is optimized on the basis of the analysis results and the herringbone grooves with uniform size are obtained. Furthermore,the loads applied on the spindle at different forming stages are confirmed. This method can reduce the processing cost of the existing forming method and improve the forming efficiency.It makes the mass production of the hydrodynamic bearing possible.
In this paper,a method to process the microgroove of hydrodynamic bearing is presented,and ABAQUS software is employed to analyze the processing. By analyzing the case of pressing depth of 32μm,it is found that the largest forming depth lies at the tip of the herringbone groove and the smallest one at the tail. Through the analysis of the forming depth at four different pressing depths( 20 μm,24μm,28 μm,32 μm) of the upper die,it is discovered that the forming depth of the herringbone groove after springback changes near linearly with the pressing depth. The dimension of the herringbone groove die is optimized on the basis of the analysis results and the herringbone grooves with uniform size are obtained. Furthermore,the loads applied on the spindle at different forming stages are confirmed. This method can reduce the processing cost of the existing forming method and improve the forming efficiency.It makes the mass production of the hydrodynamic bearing possible.
引文
[1]KANG K P,RHIM Y C,SUNG K,et al. A study of the oil-lubricated herringbone-grooved journal bearing-Part 1:Numerical analysis[J].Jouranl of Tribology,1996,118(4):906-911.
[2]吴建康,李安峰.双向人字槽液体润滑径向轴承动力性能[J].机械科学与技术,2002,21(2):228-230.
[3]BONNEAU D,ABSI J. Analysis of aerodynamic journal bearings with small number of herringbone grooves by finite element method[J].Jouranl of Tribology,1994,116(4):698-704.
[4]ZIRKELBACK N,ANDRES L S. Finite element analysis of herringbone groove journal bearings:A parametric study[J]. Jouranl of Tribology,1998,120(2):234-240.
[5]黄国权,郝卓.长轴表面滚压加工过程数值模拟的研究[J].制造技术与机床,2011(12):153-157.
[6]张国军,苏娟华.引线框架用铜合金材料弯曲回弹有限元分析[J].热加工工艺,2011,40(7):91-94.
[7]刘慧慧,王欣,欧阳金龙,等. C5210磷青铜薄板微弯曲回弹的尺寸效应[J].机械工程材料,2017,41(7):29-33.
[8]谷诤巍,蔡中义,徐虹,等.帽形截面冷冲压件的回弹分析及补偿[J].清华大学学报(自然科学版),2010,50(2):200-203.
[2]吴建康,李安峰.双向人字槽液体润滑径向轴承动力性能[J].机械科学与技术,2002,21(2):228-230.
[3]BONNEAU D,ABSI J. Analysis of aerodynamic journal bearings with small number of herringbone grooves by finite element method[J].Jouranl of Tribology,1994,116(4):698-704.
[4]ZIRKELBACK N,ANDRES L S. Finite element analysis of herringbone groove journal bearings:A parametric study[J]. Jouranl of Tribology,1998,120(2):234-240.
[5]黄国权,郝卓.长轴表面滚压加工过程数值模拟的研究[J].制造技术与机床,2011(12):153-157.
[6]张国军,苏娟华.引线框架用铜合金材料弯曲回弹有限元分析[J].热加工工艺,2011,40(7):91-94.
[7]刘慧慧,王欣,欧阳金龙,等. C5210磷青铜薄板微弯曲回弹的尺寸效应[J].机械工程材料,2017,41(7):29-33.
[8]谷诤巍,蔡中义,徐虹,等.帽形截面冷冲压件的回弹分析及补偿[J].清华大学学报(自然科学版),2010,50(2):200-203.