The Process Research and Numerical Simulation of Composite Roll

Due to obtain good mechanical properties and cost savings etc. composite roll is widely used in rolling steel industry. It is important significance for composite roll interference fit to study because assembly interference fit between roller sleeve and mandrel affect directly the performance of composite roll. In paper the calculation format of interference fit is obtained by deriving theoretically the interference fit process of composite rollers roller sleeve and mandrel. At the same time, the numerical calculation of the maximum amount of interference between roller sleeve and mandrel is done by finite element method, the results show that the theoretical calculation and finite element calculation are basically consistent, thus provide a theoretical and design for composite roll designer and has important practical value.

Interference Fit Assembly of Micro-Parts Based on Microscopic Vision and Force

To assemble easily damaged micro-parts safely in interference fit way, the assembly process is designed and the interaction force in assembly process is analyzed. The pose of micro-parts is aligned based on calibration of three microscopic vision systems from different directions. In addition, a control strategy based on feedback of vision and force is proposed to assemble safely. In the case of two micro-parts just contact, position of micro-part is adjusted based on force information to compensate pose alignment error and keep force in safe range. When micro-part is deformed as increased contact force, position of micro-part is adjusted based on force in the interference fit process and deformation of micro-part. Experimental results demonstrate the effectiveness of proposed methods.