Achieving optimal cutting results for melon rootstock: Precision linear cutting and parameter simulation optimization

文献类型： 外文期刊

第一作者： Chen, Shan

作者： Chen, Shan;Feng, Qingchun;Li, Tao;Jiang, Kai;Zhao, Chunjiang;Chen, Shan;Feng, Qingchun;Kan, Za;Meng, Hewei;Zhao, Chunjiang;Zhang, Qian;Jia, Zhiwei;Zhao, Chunjiang;Li, Tao;Jiang, Kai

作者机构：

关键词： Grafting robot; Rootstock cutting; EDEM; Cutting model; Response surface test; Parameter optimization

期刊名称：COMPUTERS AND ELECTRONICS IN AGRICULTURE （ 影响因子：8.9； 五年影响因子：9.3 ）

ISSN： 0168-1699

年卷期： 2025 年 230 卷

页码：

收录情况： SCI

摘要： With the increasing global demand for grafted vegetable seedlings, improving factory-based seedling production efficiency has become a key research focus. To overcome cutting failures of melon rootstocks and achieve optimal cutting performance, this study examines the interaction between the cutter and the seedling stem. First, based on digital image technology, a geometric model of melon rootstock cutting was developed, and a novel grafting robot with a linear cutting mechanism was designed for precise rootstock cutting. Next, a mechanical model of the cutter penetrating the seedling stem was developed, and the cutting process was numerically simulated using the discrete element method (EDEM). The cutting effects under different parameters were evaluated through qualitative analysis of the force chain distribution network at the cutting interface, and quantitative analysis of the force magnitude and maximum displacement at the cut. Next, discrete element response surface experiments and a second-order response surface regression model were used to optimize and determine the optimal cutting parameters. Finally, the performance of the cutting mechanism was validated through bench tests. The results showed that under the optimal parameters from the response surface, the actual cut length increased from 4.71 mm to 4.74 mm, the theoretical value error decreased from 1.06 % to 0.42 %, and the cutting success rate increased from 90 % to 96 %. This study not only achieved precise cutting of melon rootstocks but also revealed the interaction mechanism between the cutter and the seedling stem, providing valuable theoretical and practical guidance for the development of rootstock cutting technology.

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