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插齿中根圆的变化与插齿刀设计应注意的问题
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作者 李红霞 杨海军 《洛阳工学院学报》 2002年第2期24-26,共3页
针对生产中内齿轮及内齿轮模具等产品在加工时的质量问题 ,对插齿刀几何参数进行了分析 ,归纳出插齿刀所插出的内齿轮根圆半径变化的规律并建立相应的数学模型 ,并认为插齿刀齿顶后面母线的几何形状应由直线改为特殊曲线或折线 。
关键词 根圆 插齿刀 齿轮 数学模型 母线设计 移距系数
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Resistance optimization of flexes in aluminum reduction cells 被引量:1
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作者 李劼 刘杰 +3 位作者 刘伟 赖延清 王志刚 伍玉云 《Journal of Central South University of Technology》 EI 2008年第1期20-24,共5页
The resistance arrangements of the flexes connecting with the cathode bus bar in aluminum reduction cells were generalized as three modes. In each mode the universal method to select proper resistivity of the flexes w... The resistance arrangements of the flexes connecting with the cathode bus bar in aluminum reduction cells were generalized as three modes. In each mode the universal method to select proper resistivity of the flexes was induced respectively to insure that the current in local group of flexes was equal. Furthermore, a 350 kA aluminum reduction cell based electric field model was developed by finite element method to evaluate the effect of the method. Suggestions on selection of three modes were also put forward. The results show that the methods of resistance optimization can reduce the current variation about 180 A compared with that in original case. 展开更多
关键词 bus bar design aluminum reduction cell electric field finite element method
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