宽刃超声波切割刀的研究与设计  

Structural design of wide edge ultrasonic cutter

作　　者：张云电[1] 陈健 储瑞 董昌帅 ZHANG Yun-dian;CHEN Jian;CHU Rui;DONG Chang-shuai(School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China)

机构地区：[1]杭州电子科技大学机械工程学院,浙江杭州310018

出　　处：《机电工程》2017年第12期1382-1386,共5页Journal of Mechanical & Electrical Engineering

摘　　要：针对传统切割方法对大尺寸脆性、粘性食品切割时,会产生碎屑、挤压变形等问题,对用于食品的20 kHz宽刃超声波切割刀的模型设计、刀具横向振动等方面进行了研究。根据复合变幅杆设计理论,确定了切割刀基本尺寸,通过在刀具特定位置上开槽的方法抑制了刀具横向振动。依照优化流程图,在ANSYS环境下对刀具进行了模态分析,得出了刀具模型最优解,使刀具在20 kHz频率左右刃口振动主要以纵向振动为主,刀具整体振型均匀;利用激光位移传感器对刀尖进行了振幅测量,发现刀具振型稳定;对上述宽刃超声波切割刀进行了面包切割实验。实验结果表明:该宽刃超声波切割刀进行食品切割时整体振型均匀,不会产生碎屑、挤压变形等问题。Aiming at the traditional cutting method of large size brittleness,sticky food cutting,will produce debris,extrusion and other issues,the model for the design of 20 kHz wide blade ultrasonic food cutter,cutter of transverse vibration and so on were studied.According to the design theory of composite horn,the basic size of the cutter was determined,the transverse vibration of the cutter methods was restrained in the specific location on the slotted cutter.According to the optimization of flow chart,the modal analysis was carried out to obtain the optimal cutting tool model in the ANSYS environment,so that the tool in the 20 kHz frequency around edge vibration mainly by longitudinal vibration,uniform overall vibration amplitude.The laser displacement sensor was used to measure the amplitude of the tool nose and find that the tool vibration isstable.Ultrasonic cutting knife for cutting bread experiment was presented.The results indicate that the ultrasonic cutting knife blade width for food when cutting the overall vibration of uniform,not produce debris,extrusion and other issues.

关 键 词：超声切割刀 谐振频率 振幅分布 

分 类 号：TH113.1[机械工程—机械设计及理论] TG702[金属学及工艺—刀具与模具]