上图是一种夹持在车床复合刀架上的附件。它提供了在单刃螺纹车制过程中的自动进刀。附件的底座是一用螺栓固定在复合刀架上的矩形钢件。在钢件上钻孔,攻丝,安装一轴肩螺栓,手柄以轴肩螺栓为枢而转动,而轴肩螺栓也可作为操作手柄.(为使草图简化,省略了一些细节,例如:槽,夹持螺纹车刀定位的调节螺钉).在底座的侧面,压入两个销子;一个位 The picture above is a kind of attachment which is clamped on the lathe compound turret. It provides automatic feed during single-edged thread making. The base of the attachment is a rectangular steel part bolted to a composite turret. Drilling holes in the steel, tapping, mounting of a shoulder bolt, the handle pivoted by a shoulder bolt, and the shoulder bolt as an operating handle. (To simplify the sketches, omit some details such as slots , Hold the adjustment screw thread knife positioning.) On the side of the base, press into the two pins; a bit