公开(公告)号：US3718405A

公开(公告)日：1973-02-27

申请号：US3718405D

申请日：1971-06-29

申请人： ROCKWELL MFG CO

发明人： KEITER E ,  PFLEIDERER G ,  PETTIGREW D

IPC分类号： B23B47/16 ,  B23Q5/16 ,  B23B47/14

CPC分类号： B23Q5/16 ,  B23Q5/162 ,  Y10T408/67 ,  Y10T408/6779

摘要： A vari-speed pulley drive transmission for overarm machine tools, such as drill presses and similar tools having depending tool spindles, and speed selector control means and spindle return spring tension adjustment means therefore. The speed selector control means is characterized by the inclusion therein of a selector knob and adjustable friction drag means accessible to an operator standing in operating position in front of the machine tool and eccentric pin connector means journalled in a shifter ring carried by the shiftable sheave of the driven varispeed pulley and providing a pin and slot connection with the shifter lever for calibrating the speed of the vari-speed pulley drive with the selector knob and its associated speed scale graduations.

摘要翻译： 因此，用于超速机床的变速轮驱动变速器，例如钻床和具有悬挂工具主轴的类似工具，以及速度选择器控制装置和主轴复位弹簧张力调节装置。 速度选择器控制装置的特征在于其中包括选择器旋钮和可调节的摩擦阻力装置，其可操作者站在机床前面的操作位置，并且偏心销连接器装置被安装在由可移动的滑轮 驱动变速皮带轮，并提供与换档杆的销和槽连接，用于通过选择旋钮及其相关的速度刻度来校准变速滑轮驱动器的速度。