摘要 针对甘薯人工削皮劳动强度大、效率低,传统去皮方式污染严重等问题,基于甘薯的物理特征,设计了一种柔性自适应仿形甘薯削皮机。为确保甘薯削皮厚度的一致性与削皮作业的稳定性,首先对甘薯削皮过程进行理论分析,确定了影响仿形削皮性能的关键部件结构参数及取值范围,以仿形限位球半径、仿形力、电缸与卡爪转速比为试验因素,以甘薯削皮厚度均匀性为响应值,利用Design-Expert 8.0. 6软件采用BBD法设计三因素三水平试验,建立了各因素与甘薯削皮厚度均匀性的回归数学模型,分析了影响削皮性能的主要原因。结果表明,各因素对甘薯削皮厚度均匀性影响的主次顺序为:仿形力、仿形限位球半径、电缸与卡爪转速比;最佳参数组合为仿形力68.1 N、仿形限位球半径28.1 mm、电缸与卡爪转速比0.95。甘薯削皮性能验证试验表明,在优化后的工作参数下,该甘薯削皮机削皮效果较好,平均每个甘薯削皮时间为10 s,工作效率达360个/h,满足甘薯削皮的工业化加工需求。 Aiming at the problems of high intensity and low efficiency of manual peeling of sweet potato,a technological scheme for adaptive cutter mechanism peeling of sweet potato was proposed based on the analysis of the shape characteristic of sweet potato.To ensure the consistency of sweet potato cutting thickness and the stability of peeling operation,firstly,a theoretical analysis of the sweet potato peeling process was carried out,and the structural parameters and value ranges of key components that affected the peeling performance were determined.For further study of the improved working performance of mechanism peeling for sweet potato,the Box Behnken experimental design with three factors and three levels was performed,parameters such as radius of profiling ball,profiling force and rotational speed ratio of electric cylinder and jaw were selected as independent variables,which would influence the thickness uniformity of sweet potato peeling.The mathematical model was established,and the main reasons that affected peeling performance were analyzed as well.The test results showed that effects orders of three parameters on the sweet potato obvious rate from primary to secondary were as follows:profiling force,roller ball size,profiling force and rotational speed ratio of electric cylinder and jaw.The optimal working parameters were forward profiling force of 68.1 N and radius of profiling ball of 28.1 mm and rotational speed ratio of electric cylinder and jaw of 0.95.Confirmatory tests showed that the sweet potato peeling machine had a better peeling effect,the average peeling time of single sweet potato was 10 s,the working efficiency was 360 pieces/h,which can meet the design requirements of the sweet potato mechanical peeling with the optimized working parameters.
机构地区 浙江省农业科学院农业装备研究所
出处 《农业机械学报》 EI CAS CSCD 北大核心 2021年第3期135-142,共8页 Transactions of the Chinese Society for Agricultural Machinery
基金 浙江省科技计划项目(2020C26001)。
关键词 甘薯 削皮 自适应仿形 响应曲面法 试验 sweet potato peeling auto-adaptive profiling response surface methodology experiment
