大家知道,加工变螺距螺纹时,两个基本运动之一,即工件的旋转运动或刀具的进给运动是变化的。为此,应在螺纹车床的传动链中装一变螺距的机构。但这种机构的缺点是螺距增量范围很小,因而只能加工螺距增量不大的短螺纹。本文介绍一种螺距变量范围很宽的变螺距螺纹加工机床及这种机 As you know, one of the two basic motions, ie the rotary motion of a workpiece or the feed motion of a tool, varies when machining a variable-pitch thread. For this purpose, a variable pitch mechanism should be installed in the drive chain of the thread lathe. However, the shortcoming of this type of mechanism is that the range of pitch increments is small so that only short threads with small increments of pitch can be machined. This article describes a wide range of pitch variable variable pitch thread machining machines and such machines