According to the chatter marks on strip steel of HC cold rolling mill , by analysis the collected vibration and simulation analysis on rolling mill, it is found that chatter marks of strip steel surface cuased by the Seventh-order natural frequency. Then, for analysising cuase of chatter marks on strip steel surface, relevant inhibiting chatter marks measures is put forward, and the measures are used for production which got a good inhibition effect of chatter marks.
The optical surface defects have a significant impact on functions and reliability of the whole optical system. In recent years, with the great attention on research of large-scale high-power solid-state laser device at home and abroad, the detection of optical surface defect has also been highly valued. Through continuous exploration, defect detection technology has made some achievements, but there are still some urgent technical problems to be solved. In this paper, the technology situation of optical surface defect will be summarized in two aspects: the surface cleanliness and surface flaws. Moreover, the technical difficulties and the problems which are currently facing will be analysis.
This paper designed a kind of parallel mechanism with three degrees of freedom, the freedom and movement types of the robot are analyzed in detail, the parallel mechanisms Kinematics positive and inverse solutions are derived through using the vector method. And at last its workspace is analyzed and studied systematically.
According to the working characteristics and installment environments of modules,a compact 6-DOF installing-calibrating robot was designed. Coordinate systems of joints are set upand the forward kinematic solution are derived by using D-H methods. Using the Monte Carlo method based on random probability and MATLAB software simulation for the robot's structural parameters to the robot's workspace impact. According to joint space to the mapping workspace,robots have been the workspace. The research results have proved that the designed configuration can satisfy the needs of installment action,which will provide theoretical reference for the robot trajectory planning,dynamic analysis and online real-time calculation.
The plane docking mechanism is the core part of the 6-DOF hybrid assembly and calibration platform, while the 6-DOF hybrid assembly and calibration platform has a core position in the entire assembly and calibration system device. The plane docking mechanism position and orientation docking accuracy directly affects accuracy of the entire docking process. For the purpose of efficiency, precision and security of the modules on end platform, error model was built. Meanwhile, the simulation verification and error compensation were done for the output platform. Ultimately, the smooth running of the entire laser device was ensured.
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