新型切菜机结构设计及模态分析

Structural Design and Modal Analysis of a New Vegetable Cutter

摘要: 针对切菜机，提出了新型结构设计并且说明了运行原理。运用Solidworks三维建模软件对总体结构进行简化建模，采用Workbench有限元软件对切菜机刀具进行静态结构分析和模态分析，计算并分析了其前四阶固有频率和模态振型。将刀具简化为单自由度系统，经过理论验证了其可行性。最后对刀具进行拓扑优化，总变形和前四阶固有频率皆有提升。

Abstract: For the vegetable cutter, a new structure design is proposed and the operation principle is explained. Solidworks 3D modeling software was used to simplify the modeling of the overall structure, and Workbench finite element software was used to conduct structural static analysis and modal analysis of the vegetable cutter, and its first four-order natural frequencies and modal vibration shapes were calculated and analyzed. The tool is simplified to a single-degree-of-freedom system, and its feasibility is verified theoretically. Finally, the topology optimization of the tool is carried out, and the total deformation and the first four natural frequencies are improved.