在大型零件上加工T型槽,采用刨削方法比较为合适。在刨削中,刀具回程时,同已加工面摩擦,容易摩损刀具和工件。采用附图的抬刀装置,可以解决这一问题。在开始切削时(图1—1),铰链托板被迫偏转,沿工件顶面滑过;当行程终了时(图1—3),刀具离开工件,铰链托板随刀具自由落下;当工作台回程时,工件迫使铰链托板将刀具托起(图 T-slot in the processing of large parts, the use of planing method is more appropriate. In planing, the tool returns, with the machined surface friction, easy to wear tool and workpiece. This problem can be solved using the lift-knife device of the attached drawing. At the beginning of cutting (Figure 1-1), the hinge plate is forced to deflect and slide along the top surface of the workpiece. When the stroke ends (Figure 1-3), the tool leaves the workpiece and the hinge plate falls freely with the tool. When the work When the return stroke of the table, the work piece forces the hinge pallet to hold the tool (Fig