【導(dǎo)讀】普通車床數(shù)控改造········································3. 普通車床的構(gòu)成···········································7. 步進(jìn)電機(jī)的控制方案···································12. 步進(jìn)電機(jī)的變速控制···································16. 步進(jìn)電機(jī)控制程序設(shè)計(jì)··································20