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目前,国产万能外圆磨床的内圆磨具,采用主轴莫氏锥孔与砂轮杆外锥体连接。磨削时,砂轮杆进入工件孔内进行加工,由于砂轮杆刚度小,只适用于磨削长度小于190mm的一般工件。对于大型锥度环规以及淬硬的长直孔工作,则难于进行磨削。我厂对大型锥度环规,以往采取精车和刮研的方法进行加工,工件尺寸精度和表面光洁度较差,硬度不能满足要求。为此设计制造了大孔径长内圆磨具(见图1)。
At present, the domestic universal cylindrical grinder internal circular grinding machine, using the spindle Morse taper hole and the outer cone wheel spindle connection. Grinding, the grinding wheel into the workpiece hole for processing, due to the small rigidity of the grinding wheel, grinding only applies to the general length of less than 190mm workpiece. For large taper ring gauge and hardened long straight hole work, it is difficult to carry out grinding. I plant a large taper ring, the past to take fine car and scraping method for processing, the workpiece size accuracy and surface finish less, the hardness can not meet the requirements. To this end, the design and manufacture of large-diameter long circular grinding tools (see Figure 1).