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这是应用差动原理自行设计的一种简易自驱式机械动力头,是用来加工新4105型柴油机主油道孔的。孔径16毫米、长602毫米,分两头钻,用加长的钻头一次钻够深度,不需要中间退出排屑。优点是结构简单,制造容易,使用方便,也易于维修保养。工作原理拖板上固定着主轴箱和电机(图48中未画出),动力经皮带传给主轴,实现主运动。主轴上的主动齿轮通过双联齿轮同时传动两个被动齿轮:一个齿轮内孔固定有滑键,带动丝杆转动,叫作丝杆齿轮;另一个齿轮内孔车有梯形内螺纹,齿轮本身又是丝母,叫丝母齿轮。当操纵手柄放在中间位置时(即图48所示位置),丝杆齿轮和丝母
This is a simple self-propelled mechanical power head designed by using the differential principle, which is used to process the main oil passage hole of the new 4105 diesel engine. Aperture 16 mm, length 602 mm, divided into two drill, drill with a longer drill enough depth, do not need to exit the middle of the chip. The advantage is that the structure is simple, easy to manufacture, easy to use and easy to maintain. Working principle The carriage and the motor are fixed on the carriage (not shown in Figure 48). The power is transmitted to the spindle via the belt to achieve the main movement. The driving gear on the spindle drives two driven gears at the same time through the double gear: a gear is fixed with a sliding key in the inner hole and drives the screw rod to rotate, which is called lead screw gear; the other gear has a trapezoidal internal thread in the inner hole car. Is the nut, called the nut gear. When the joystick in the middle position (ie, the position shown in Figure 48), screw gear and nut