The application of S7-400 programmable controller in the reformation of the automatic control system of assel mill;

The automatic control system of Assel mill involves the programmable controller,the direct current velocity modulation system,position controller,and the electronic cam.

This article has described the function of the screw-down device of the three roll pipe mill,meanwhile the control technology for the screw-down device adjustment has been analyzed as well.

In order to enhance the stability of working mechanism of pipe mill, the virtual prototype model was firstly established by ADAMS software, and the kinematics simulation was carried out.

Improving the motion stability of the main head of tube rolling mill has great influence on improving the rol- ling quality of the tube.

On the basis of original manual controlling of rolling tube mill wall, hydraulic pressure servo system and automatic feedback control system were introduced, tube wall rolling automatic control were completed.

his paper analyses the rolling deformed region space relation of taper roller rolling tube mill and the major defects on mathematic model of ITAM corporation .

Described here in the paper is a pipe cold-rolling pipe mill-used system with planetary gear-based main drive and rotary drive,which is substituted for the conventional system with eccentric gear/cam-based main drive and rotary drive for the said mill.