介绍了高速自动校直切断机的组成和原理 ,简要讨论了影响提高校直速度的主要因素 ,介绍了PCC(Pro grammingComputerController)的组成和原理 ,给出了控制系统的设计要点和主要元器件的选择原则。高速自动校直切断机的校直速度可达 1m/s ,是原有产品的 2倍 ,最小切断长度可达 0 .8m。比原产品的性能指标和自动化程度大大提高 This paper introduces the composition and principle of high speed automatic straightening and cutting machine, briefly discusses the main factors that affect the straightening speed, introduces the composition and principle of PCC (Pro grammingComputerController), gives the design of control system and the main components Choose the principle. High-speed automatic straightening and cutting machine alignment speed up to 1m / s, is 2 times the original product, the minimum cut-off length of up to 0 .8m. Than the original product performance indicators and greatly improve the degree of automation