球面在机械设计中应用非常广泛。一般加工外球面和半个内球面的刀杆设计较容易。对于超过半个圆内球面,如图1所示,且球直径小,加工精度高的工件,按照一般刀杆设计就不易达到要求。本文介绍一种镗刀杆,它不仅加工球面精度高(球径精度可达到IT6),调整使用方便,而且适用于大批量生产。一、工作原理如图2所示,将刀杆体1夹紧在普通车床的方刀架上,锥柄13安装在尾架的锥 Sphere is widely used in mechanical design. General machining spherical and half a spherical surface of the arbor design easier. For more than half a circle of spherical, as shown in Figure 1, and the ball diameter is small, high precision machining of the workpiece, according to the general design of the knife is not easy to meet the requirements. This article introduces a boring bar, which not only high-precision spherical processing (ball diameter accuracy up to IT6), easy to adjust and use, but also for mass production. First, the working principle shown in Figure 2, the knife body 1 clamp in the ordinary lathe square knife holder, taper shank 13 installed in the tail cone