压电陶瓷粉末干压成型模具设计及强度校核  

Design and Strength Checking of Piezoceramic Powder Dry Press Mold

作　　者：王绍照 汪扬波 周华将 李晓晓 陈渝 WANG Shaozhao;WANG Yangbo;ZHOU Huajiang;LI Xiaoxiao;CHEN Yu(School of Mechanical Engineering,Chengdu University,Chengdu 610106,China)

机构地区：[1]成都大学机械工程学院,四川成都610106

出　　处：《成都大学学报（自然科学版）》2020年第4期339-344,共6页Journal of Chengdu University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(11702037);中国博士后科学基金面上资助项目(2017M623025)。

摘　　要：压电陶瓷广泛应用于传感、驱动、超声、换能等各种电子装备,是一种重要的信息功能材料.本研究针对实验室研发常用的样品尺寸,结合模压成型理论,设计了一套可将压电陶瓷粉末干压成型为小圆片坯体的成型模具.首先给出了模具整体结构、零件尺寸、选材要求及装配方式;然后根据材料的许用应力和参考陶瓷坯体裂纹形成的力学条件,确定最大压制力;最后在模具的受力分析基础上,对模具进行了全面的强度校核.计算结果表明:该模具的设计强度能够满足实验室研发的工艺要求、并且操作方便、性价比高.Piezoelectric ceramics are widely used in various electronic equipment such as sensing,driving,ultrasound,and energy conversion,and serve as an important information function material.This paper,combined with the compression molding theory,designs a set of molds that can be used to dry compact the piezoelectric ceramic powder into small round green bodies based on the sample sizes commonly used in laboratory research and development.Firstly,the thesis gives the overall structure of the mold and part size,material selection requirements and assembly methods;then the maximum compressive force is determined according to the allowable stress of the material and the mechanical condition of crack formation of the ceramic body;finally based on the analysis of the force of the mold,a comprehensive strength check of the mold is carried out.The calculation results show that the design strength of the mold can meet the technological requirements developed by the laboratory,and it is not only easy to operate but also economical.

关 键 词：压电陶瓷 干压成型 模具设计 强度校核 压坯开裂 

分 类 号：TQ174[化学工程—陶瓷工业]