By calculating the roll pitch, roll neck,roll number, capacity and number of the straightening machine as well as the straightening speed, the model selection of overhung type straightening machine in small workshop is completed.

The pressure value on the taper sleeve during fixing roll ring of cantilevered mill for high speed wire rod was calculated by analyzing the balance of force and moment of the taper sleeve So,the problems of roll collapse and loose can be avoided,which caused by large and small pressure on the taper sleev

On a roller leveler the deflection of a plate under the action of levelling rollers is assumed that the deflection is resulting from the forces exerted by both screw-down and bending roller.

This article based on the theory analyse and field experience study of a eleven roll straightener.

Organization modeling and simulation of boom type roadheader's horizontal hunting;

Visualization monitoring of boom type roadheader cutting path;

The control model of the manipulator for the mine boom type roadheader had an uncertainty and nonlinear with the easy modeling,the uncertainty of the hydraulic system parameters,loading disturbance of the mechanism model and asymmetric cylinder controlled by the symmetric valves.