在机械加工自动线及机床自动化改装中,经常要求转轴停止转动后,停留在一个确定的方位上,便于接上下一个自动工序,叫做准停。如麻花钻或镗杆的尾锥,其扁舌必须对准锥孔的扁舌孔,才能插入。旋凤铣丝扣的刀具,必须躲开工件,才能退刀。有些准停装置,需要复杂的电器控制系统及机械结构。去年,我们在一项半自动旋风铣扣的技术革新中,采用了一种凸轮式准停装置,结构简单, In automatic machining lines and automatic machine modification, often require the shaft to stop turning, stay in a certain orientation, easy access to the next automatic process, called quasi-stop. Such as twist drills or boring bar tail cone, the flat tongue must be aligned cone hole flat tongue, can be inserted. Feng Feng milling thread deduction of the tool, you must escape the workpiece in order to retract. Some quasi-stop device, requires complex electrical control system and mechanical structure. Last year, we adopted a cam-type quasi-stop device in a semi-automatic whirlwind milling technology innovation, the structure is simple,