公开(公告)号：USD255319S

公开(公告)日：1980-06-10

申请号：US815864

申请日：1977-07-14

申请人： William H. Schultz ,  E. Harold Lilja

设计人： William H. Schultz ,  E. Harold Lilja

公开(公告)号：US4115957A

公开(公告)日：1978-09-26

申请号：US837470

申请日：1977-09-28

申请人： Chris H. Porth ,  E. Harold Lilja

发明人： Chris H. Porth ,  E. Harold Lilja

IPC分类号： B24B21/18 ,  B24B23/06

CPC分类号： B24B21/18 ,  B24B23/06

摘要： The front idler roller of the belt sander is mounted by a yoke for swinging movement in a plane containing the axes of both the drive and idler rollers and for shifting movement along a path generally toward and away from the drive roller. A transversely disposed shaft mounted by the tool housing has a cam formation at one end thereof received within an opening formed in the yoke; the cam is captured in this opening formed in part by a cam follower. The shaft is mounted for axial and rotational movements. Rotation of a first knob on the other end of the shaft causes the latter to move axially thereby to swing the idler roller for centering of the belt. Rotation of a second knob, concentric with the first knob and also mounted on other other end of the shaft, causes the shaft to rotate thereby activating the cam for shifting the idler roller toward the rear roller for easy belt replacement.

摘要翻译： 带式打磨机的前惰轮通过轭架安装，用于在包含驱动和惰轮的轴线的平面中摆动，并且用于沿着大致朝向和远离驱动辊的路径移动运动。 由工具壳体安装的横向设置的轴在其一端具有凸轮结构，该凸轮结构被容纳在形成在磁轭中的开口内; 凸轮捕获在由凸轮从动件部分形成的该开口中。 轴安装用于轴向和旋转运动。 轴的另一端上的第一旋钮的旋转使得后者轴向移动，从而摆动惰辊以使皮带居中。 与第一旋钮同心并且还安装在轴的另一端上的第二旋钮的旋转使得轴旋转，从而启动凸轮以使惰辊朝向后辊移动以便于更换皮带。