一、小型机床的调速现状及其展望目前小型机床调速多数是由机械结构实现的。如小车床、钻床是用宝塔皮带轮,用调整主轮与从轮之间的传动比实行多级调速,也有用齿轮箱换档调速的。这样的调速机构, First, the small machine tool speed control status and prospects Currently most of the small machine speed control is achieved by the mechanical structure. Such as small lathe, drilling machine is the pagoda pulley, with the adjustment of the main wheel and the gear ratio between the implementation of multi-stage speed control, but also useful gear box shift speed. This speed governing mechanism,