我厂设计、制造的差速动力头是一种无齿轮自驱式小型机械动力头,它具有体积小、结构紧凑、简单、调试方便等特点。几年来,我们采用这种动力头装了两台斜油孔组合机床,加工X195柴油机机体上的六个斜油孔,收到了良好的效果。这种动力头是根据丝杠与螺母的相对运动原理设计而成的。我们知道:在一个丝杠、螺母机构中,当丝杠定位后,丝杠的旋转迫使螺母作直线运动;反过来,当螺母定位,螺母旋转则带动丝杠作直线运动。如果螺母定位,我们使丝杠和螺母同时旋转,转速不等,这样利用它们之间的转速差,可以 Our factory design, manufacture of differential power head is a gearless self-propelled small mechanical power head, it has small size, compact structure, simple, easy to debug and so on. Over the past few years, we have adopted this power head installed two oblique hole combination machine, processing X195 diesel engine body six inclined hole, received good results. This power head is based on the principle of relative movement of the screw and nut design. We know: in a screw and nut mechanism, when the screw is positioned, the rotation of the screw forces the nut to move linearly; in turn, when the nut is positioned and the nut rotates, the screw is driven to move linearly. If the nut is positioned, we rotate the lead screw and the nut at the same time, with different speed, so that the speed difference between them can be used