江西宜春学院与江西飞龙钻头制造有限公司一起研发的牙轮钻头,广泛应用于矿山、桥梁的建设中。其中一牙轮钻头的主要零件为球体,在加工球体时,需控制的关键尺寸为球体的直径与球心到右端面的尺寸。球体的直径可以很容易地测量出来,而球心到右端面的尺寸不易控制与测量。加工球体时先按图纸要求加工内孔,再以内孔为基准定位,精加工球 Jiangxi Yichun Institute and Jiangxi dragon drill Manufacturing Co., Ltd. jointly developed cone bit, widely used in the construction of mines and bridges. One of the main components of a roller bit is a sphere, the key dimensions to be controlled are the diameter of the sphere and the size of the center of the sphere to the right end face when processing the sphere. The diameter of the sphere can be easily measured, while the size of the center of the sphere to the right is difficult to control and measure. When processing the ball, the inner hole should be machined according to the drawing requirements, then the inner hole should be taken as the reference position to finish machining the ball