Can lathe tool teaching aid of expressing geometric parameters directly perceived

The utility model discloses a can lathe tool teaching aid of expressing geometric parameters directly perceived, including cylinder, transfer ball, first pointer and second pointer, the cylinder is formed by the magnetic material preparation, and transfer ball installs on the cylinder with rotatable mode, and first pointer is fixed on transfer ball and along with transfer ball rotates and rotates,and the last plane at the cylinder is fixed to the second pointer. The utility model discloses simple structure convenient operation, can be very direct demonstrate various angles to the student, canalleviate mr's burden, can reach good teaching effects again. 本实用新型公开了种可以直观表达几何参数的车刀教具，包括圆柱体、万向滚珠、第指针和第二指针；圆柱体是由磁性材料制作而成，万向滚珠以可转动的方式安装在圆柱体上，第指针固定在万向滚珠上并随着万向滚珠转动而转动，第二指针固定在圆柱体的上平面。本实用新型结构简单操作方便，可以很直接的向学生展示各种角度，能减轻老师的负担，又能达到良好的教学效果。