我厂在加工如图1所示带细长梯形工件时(材料为ZQSn6-6-3),在车床上采用一般的刀具,由于刀杆细长刚性差,难以加工出合格的内梯形螺纹。为解决这一问题,我们设计了如图2所示的一套简单、实用的刀杆。该刀杆通过燕尾连接,增加了刀杆的刚性。经使用效果良好。 I plant in the processing shown in Figure 1 with elongated trapezoidal workpiece (material ZQSn6-6-3), the lathe on the use of general tools, due to the rigid elongated arbor poor, difficult to process qualified trapezoidal thread. To solve this problem, we designed a set of simple and practical tool bar as shown in Fig.2. The knife through the dovetail connection, an increase of the rigidity of the knife. By the use of good results.