【摘要】 针对旋耕机耕作深度不足，抛洒造成壅土等问题，设计了一款回转半径260 mm的旋耕刀，采用阿基米德螺旋线方法对旋耕刀侧切刃进行设计，正切刃与侧切刃之间采用圆滑面过度连接，提高滑切性能，刀身材料采用65 Mn钢。采用ANSYS Workbench对刀具进行静力学分析，使用EDEM离散元仿真软件对旋耕刀三种刀轴转速切削和抛洒土壤进行仿真分析，结果表明，刀具在转速240 r/min时切土，抛洒等效果最优，满足了作业要求。此外，得出旋耕刀最大受力位置位于侧切刃靠近弯折区域，为刀具优化设计提供了理论基础。更多还原

【Abstract】 The objective of the present study was to address the issues of inadequate tillage depth and congestion resulting from throwing, by designing a rotary tillage cutter with a 260 mm rotary radius. The Archimedean helix method was employed for the design of the side cutting edge of the rotary tillage cutter. The rotary cutter was designed with a rounded and smooth surface that was over-connected between the front cutting edge and the side cutting edge to improve the performance of the sliding cut. The cutter material used was 65Mn steel, and the tools were analyzed statically and mechanically using ANSYS Workbench, respectively. The EDEM discrete element simulation software was utilized on the rotary tillage knife to conduct a three-dimensional analysis of soil cutting and throwing. The results show that the tool cuts the soil and throws the soil optimally at a speed of 240 r/min, which meets the operational requirements. Furthermore, it was determined that the maximum force position of the rotary tillage knife is situated in the side cutting edge, in close proximity to the bending region. This finding provides a theoretical foundation for the optimization of the tool design.更多还原