论文部分内容阅读
通常使用的顶尖,会因切削热而不能使工件伸长,使工件产生径向弯曲。而使用弹性活动顶尖,可以克服上述缺点。圆锥套2的外径为莫氏锥度,采用45钢。顶尖心轴1采用合金钢,热处理后精磨。滑动轴套3用黄铜制成,其外径与锥套2内径为过渡配合,件1与件3采用间隙配合,并在使3内孔开有油槽,锥套2上设有两个加油孔。顶尖安装在尾座上,使用方法与其它顶尖相同。顶尖心轴1采用较长的滑动轴套支承,具有较高的同心精度
Commonly used top, due to cutting heat can not make the workpiece elongation, the workpiece radial bending. The use of flexible top activities, you can overcome the above shortcomings. The outer diameter of the conical sleeve 2 is Morse taper, using 45 steel. Top spindle 1 using alloy steel, heat treatment after grinding. The sliding sleeve 3 is made of brass, the outer diameter of which is matched with the inner diameter of the sleeve 2, the gap between the sleeve 1 and the sleeve 3 is matched with the oil groove 3, and the sleeve 2 is provided with two refueling hole. The top is mounted on the tailstock in the same way as the other tops. The top mandrel 1 uses a longer sliding sleeve support, with high concentric accuracy