基于ANSYS的蜗杆机构优化设计
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摘要
在蜗轮蜗杆传动过程中,接触面所受的力是非常复杂的。通过SolidWorks对蜗轮蜗杆进行基本的三维建模,然后模拟它的传动过程,对蜗杆接触面的接触应力进行有限元分析研究。分析了改变蜗杆的模数、头数以及压力角时蜗杆的应力应变情况,提出了一种基于ANSYS的蜗杆机构优化设计方法。主要结论如下:只改变模数的情况下,蜗杆的接触应力随着模数的增加而增大,因此要选择较小的模数;只改变头数的情况下,蜗杆的接触应力随着头数的增加而减小,所以要选择较大的头数;压力角在标准角度20°的情况下,所受接触应力最小,所以通常要选择标准压力角。
In the process of worm and worm gear drive,the force of the contact surface is very complex. The basic three-dimensional modeling of the worm gear by Solidworks, and then simulating its transmission process, the finite element analysis of the contact stress of the contact surface of the worm. The stress and strain of the worm are analyzed when the modulus, head number and pressure angle of the worm are changed. An optimization design method of worm mechanism based on ANSYS is proposed. The main conclusions are as follows: in the case of only changing the modulus, the contact stress of the worm increases with the increase of the modulus, so a smaller modulus is selected; only when the number of heads is changed, the contact stress of the worm decreases with the increase of number of the head, so a larger number of heads is selected; if the pressure angle is 20° at the standard angle, the contact stress is the smallest, so the standard pressure angle is usually selected.
In the process of worm and worm gear drive,the force of the contact surface is very complex. The basic three-dimensional modeling of the worm gear by Solidworks, and then simulating its transmission process, the finite element analysis of the contact stress of the contact surface of the worm. The stress and strain of the worm are analyzed when the modulus, head number and pressure angle of the worm are changed. An optimization design method of worm mechanism based on ANSYS is proposed. The main conclusions are as follows: in the case of only changing the modulus, the contact stress of the worm increases with the increase of the modulus, so a smaller modulus is selected; only when the number of heads is changed, the contact stress of the worm decreases with the increase of number of the head, so a larger number of heads is selected; if the pressure angle is 20° at the standard angle, the contact stress is the smallest, so the standard pressure angle is usually selected.
引文
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[2] 濮良贵.机械设计[M].北京:高等教育出版社,2009.
[3] 杨可桢,程光蕴,李仲生.机械设计基础[M].北京:高等教育出版社,2009.
[4] 哈尔滨工业大学理论力学教研室.理论力学[M].北京:高等教育出版社,2009.
[5] 郑化丽.圆柱蜗轮蜗杆加工特性仿真分析[D].北京:机械科学研究院,2005:23-28.
[6] 孙月海,肖延萍,陈东祥.TI蜗杆传动参数化造型与齿面接触分析[J].现代制造工程,2005,29(5):300-315.
[7] 柴群,万朝燕.基于ANSYS/LS-DYNA的蜗轮蜗杆动态接触分析[J].现代制造工程,2006(11):46-48.
[8] 李亚智,赵美英,万小明.有限元基础与程序设计[M].北京:科学出版社,2004.
[9] 江磊,王玉兰.基于SolidWorks的阿基米德蜗轮蜗杆建模方法探讨[J].机械与电子,2007(3):67-70.
[10] 蔡磊,罗良清,李志明.阿基米德蜗杆零件实体建模研究[J].湖北工业大学学报,2006,21(3):152-153.