细长状海蜇丝自动切割刀具设计与分析  

Design and analysis of automatic cutting blade for slender jellyfish silk

作　　者：冯怡然[1,2] 陶学恒 王学俊[1] 芦金石[1] 李应柱[2] FENG Yi-ran;TAO Xue-heng;WANG Xue-jun;LU Jin-shi;LEE Eung-joo(Key Laboratory for Seafood Processing Technology and Equipment,Dalian Polytechnic University,Dalian,Liaoning 116034,China;Tongmyong University,Busan 485201,Korea)

机构地区：[1]大连工业大学辽宁省海洋食品加工技术装备重点实验室,辽宁大连116034 [2]东明大学,韩国釜山485201

出　　处：《食品与机械》2021年第5期120-125,共6页Food and Machinery

基　　金：海洋公益性行业科研专项经费资助(编号:201505029);辽宁省自然科学基金(编号:2020-MS-273)。

摘　　要：通过分析自动切割机的结构组成与工作原理,采用Frenet-serret标架公式结合海蜇皮的外形对刀刃线的曲率和挠率进行了数值模拟,得到刀刃轨迹为空间非等距螺旋线;结合实际工作环境,选用热处理后的440C不锈钢作为刀具材料,设计了两款碗形海蜇的专用切丝刀具;分别对两款刀具进行力学性能分析,得到了凸型刀具的应力值仅为凹型刀具的53.4%;在相同的条件下对凹、凸两种切丝刀具进行磨损分析,得出凹型刀具磨损量较凸型刀具高出一倍;经实验验证,凸型刀具的可靠性、稳定性和切削效果较好。通过综合分析,凸型刀具作为细长状海蜇丝的自动切割刀具,能够满足碗形海蜇批量切割加工的需求。To satisfy the demand for batch cutting and processing of bowl shaped jellyfish,a slender jellyfish cutting automatic cutting blade was designed for bowl shaped jellyfish.The curvature and deflection of the blade were numerically simulated using the Frenet-serret frame formula combined with the shape of the jellyfish skin,and the blade trajectory was obtained as a spatially non-isometric spiral.Two special cutting blades for bowl shaped jellyfish were designed by using heat-treated 440C stainless steel as the material for the blades,taking into account the actual working environment.The mechanical properties of the two blades were analyzed and the stress value of the convex blade was only 53.4%of that of the concave blade;the wear analysis of both concave and convex cutting blades was carried out under the same conditions and it was concluded that the wear of the concave blade was twice as large as that of the convex blade;experiments have proven the reliability,stability and better cutting results of convex blade.Through comprehensive analysis,the convex blade is used as an automatic cutting blade for slender jellyfish filaments and is able to satisfy the needs of batch cutting and processing of bowl shaped jellyfish.

关 键 词：碗形海蜇 细长丝 冲压式 螺线刀具 数值模拟 实验验证 

分 类 号：TS254.3[轻工技术与工程—水产品加工及贮藏工程]