板料拉深成形摩擦系数测量系统  

Measurement system of friction coefficient in blank deep drawing

作　　者：朱伟[1] 董湘怀[1] 张质良[1] 舒世湘[1] 

机构地区：[1]上海交通大学国家模具CAD工程研究中心,上海200030

出　　处：《仪器仪表学报》2006年第7期773-778,共6页Chinese Journal of Scientific Instrument

摘　　要：建立了一套基于自主开发的探针式组合传感器的摩擦系数测量系统,并将此传感器耦合到拉深凹模结构中,以此来实时测量板料法兰平面测量点处所受到的垂向正向压力和径向切向拉力,并根据计算公式μ(摩探系数)=P(切向拉力)/F(正向压力)直接计算出该测量点处的实时摩擦系数大小,进而通过选择几个特征点来推导出整个板料法兰平面的摩擦分布情况及其变化规律。最后实际试验数据证明,该系统能够真实地反映板料拉深成形过程中法兰平面亡的实际摩擦分布情况。A measurement system of friction coefficient was established. Real time friction coefficient could be measured out by a self-exploited probe sensor with structure of dual cantalevers, which based on the theory of resistance strain slice and dual cantilevers. Putting into the drawing cavity die, the sensor could be used to measure real-time vertical force and radial shear force, which were used to figure out friction coefficient of measuring point according to the following formula μ （friction coefficient）： P （shear force）/F （vertieal force）. Results proved that actual distribution of friction coefficient on the surface of flange could be effectively measured out in deep drawing by the aid of this system.

关 键 词：板料拉深成形 摩擦系数 传感器 双层悬臂粱式 探针 

分 类 号：TG38[金属学及工艺—金属压力加工] TH12[机械工程—机械设计及理论]