刀具及驱动刀具旋转的机床 传动件扭矩过载保护装置 [德国专利2157984] 为了防止扭矩过载,机床主轴a通过传递扭矩的离合器c、d与刀具轴b连接,用离合器外壳。把该离合器与主轴连接起来。外壳c不能与主轴相对转动,但可沿主轴作轴向移动。离合器外壳c上装有由电磁力牵引的环形衔铁 Tool and drive tool Rotating machine tool Transmission torque overload protection device [German patent 2157984] In order to prevent torque overload, the machine tool spindle a through the torque-transmitting clutches c, d and tool axis b connection, the clutch housing. Connect the clutch to the spindle. The housing c can not rotate relative to the main shaft, but can move axially along the main shaft. The clutch housing c is equipped with an annular armature pulled by electromagnetic force