【摘要】 为实现机械设计基础课程的教学目标，激发学生学习兴趣，降低学习难度，创新教学方法，以有效解决蜗杆轴向力方向判定的问题，在蜗杆受力分析的基础上，由圆柱齿轮切向力方向判定出发，结合基于SolidWorks Motion软件的蜗杆旋转运动仿真，根据轮齿运动时序状态分析，确定轮齿的感觉运动方向，得出蜗杆轴向力与其感觉运动方向轴向分量相反的结论，最终提出了基于感觉运动的蜗杆轴向力方向判定方法，并通过了基于“左右手定则”的对比实例验证。将该方法应用到工业设计专业2017级、汽车服务工程专业2020级的教学当中，学生平均成绩相对于采用传统方法教学的行政班，优秀率提高，不及格人数减少，齿轮受力分析题的成绩有所提高，课程实践取得了良好的教学效果，研究为机械设计基础教学方法的创新提供了一定的参考。更多还原

【Abstract】 In order to realize the teaching purpose of the basic mechanical design, stimulate students’ interest in learning,reduce the difficulty of learning, and innovative teaching methods, so as to solve the problem effectively of determining the axial force direction of worm, based on the force analysis of worm drive, the tangential force direction of worm is determined, judging from the determining of gear tangential force direction, combined with the simulation of worm rotation based on SolidWorks Motion, according to the analysis of worm teeth motion time sequence, the feeling motion direction of gear is determined, it is concluded that the axial force direction of worm is opposite to the axial component of its feeling motion direction, finally, a method to determine the direction of worm axial force based on feeling motion is proposed, and it is verified by a comparative example based on "left and right hand rule". The method was applied to the teaching of Industrial Design specialty in 2017 and Automotive Service Engineering specialty in 2020, the average score of the students remained basically unchanged relative to 2016 grade, the excellent rate increased, and the failed students’ number decreased,the average score of gear force analysis have been improved, the course practice has played a good teaching effect, the research provides a reference for the innovation of teaching methods of basis mechanical design course.更多还原