The flat file is important hand tools in the metal surface trace processing, its handle is generally made of wood ,write is easy to crack in its use and can not be reused ,so it results in a contain degree of waste. This paper uses positioning-clamping elements of the umiform elastic deformation to make a handle flexible locking device according to the structural characteristics of the flat file shank by ourselves to eliminate the influencs of the deviation of plsition size on workpiece centering and alignment. According to the strusture design of the collet centering device in the CNC milling machine tool system the perfect adjustment is achieved.%扁锉是机械加工中对金属表层做微量加工的重要手动工具,常见的扁锉手柄为木质,使用过程中易出现开裂,且不能重复使用,造成浪费.针对扁锉柄部都结构特点,介绍一种自制的手柄弹性锁紧装置,主要利用定位-夹紧元件的均匀弹性变形的方式,来消除定位尺寸偏差对工件定心或对中的不利影响,并根据数控铣床刀具系统中弹性夹头自动定心装置结构设计,实现其良好的可调性.
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