一、工件长度系列目前,对单键联接,花键联接以及孔径等都已标准化。相应的要求是对加工这类零件的拉刀加以系列化和标准化。由于拉刀的种类规格多,在制订标准时,首先必须对各种拉刀的基本原始数据:如拉削长度l,齿距t,齿宽g,深h,容屑槽参数进行系列化和标准化。齿距t 的大小取决于拉削长度l,同时还要考虑工作齿数和拉刀的强度。通常齿距t 按经 First, the length of the workpiece series At present, the single-button connection, spline connection and aperture have been standardized. The corresponding requirement is to serialize and standardize broaches that process such parts. Due to the variety of broach specifications in the development of standards, we must first of all broaches basic raw data: such as broaching length l, pitch t, ​​tooth width g, depth h, container chip parameters for serialization and standardization . Tooth pitch depends on the size of the broaching length l, taking into account the number of work and broach strength. Usually pitch t according to by