一、前言自1958年刘国梁同志试制成功车床自动操纵仪并著书介绍后,全国各地相继出现了不少以这种尺寸鼓作为计数装置的简易程序控制机床。这种尺寸鼓式计数装置的计数原理如下:图1的件号1与2为两个尺寸鼓,其中一个为快转鼓;另一个为慢转鼓,通过齿轮或其他装置减速。如 I. Preface Since Comrade Liu Guoliang succeeded in making a trial of the lathe automatic manipulator in 1958 and introduced books, many simple program control machine tools that used this kind of size drum as counting devices successively appeared all over the country. The counting principle of this size drum counting device is as follows: Part numbers 1 and 2 of figure 1 are two size drums, one of which is a fast drum and the other a slow drum, slowed down by gears or other means. Such as