渐开线斜齿圆柱齿轮传动接触应力分析及有限元仿真
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  关键词：打包机；斜齿圆柱齿轮；弹性力学；接触应力；UGNX软件；齿面位移；硬度；有限元仿真；NX NASTRAN解算
中图分类号：TS103            文献标志码：A            文章编号：1001-9634(2021)06-0001-05
 
收稿日期：2021-03-16
作者简介：张华兴（1976—），男，河北玉田人，工程师，主要从事机械设备及工艺提升方面的研究。 
   
Abstract:In order to solve the problem of pitting erosion and elastic-plastic deformation of gear tooth meshing surface under contact stress，taking the involute helical-spur gear of baler box as the research object，the contact stress and displacement of gear surface are calculated based on the Hertz contact stress of elastic mechanic under actual working load.The UGNX software is used for 3D modeling，material setting，meshing，constraints and loads.The NX NASTRAN calculation tool is used to analyze the distribution of contact stress and displacement between teeth and along the tooth width.According to the distribution of contact stress，the measures of pitting resistance of gear are put forward.The results show that the contact stress on the middle 1/3 part of the same tooth of the baler box helical cylindrical gear is larger，and the contact stress on the 1/3 part of both ends is smaller.By making the middle 1/3 area quenching hardness higher than the left and right 1/3 area hardness，or the quenching hardness of the working surface higher than the hardness of the non-working surface，and improving the precision of the tooth surface，adding protective cover，regular cleaning and lubricating gear，the service life of the baler gear box can be improved.
Key Words:baler；helical-spur gear；elastic mechanic；contact stress；UGNX software；tooth surface displacement；hardness；finite element simulation；NX NASTRAN calculation
 
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