Papers by Author: Hong Shi

Abstract: The virtual maintenance technology based on the virtual reality technology has changed the traditional single-site maintenance means, and also overcame the shortcoming of manufacturing cycle length, high cost, and difficult to amend for the physical prototype. Furthermore, it can expose the problem during the early design. The key technologies of virtual maintenance include the maintenance process model, virtual maintenance prototype, virtual maintenance simulation, analysis and evaluation of maintainability. In this paper, the research object is aeroengine.The key technologies of virtual maintenance were analyzed.

Abstract: Hybrid machine tool is studied in this paper and its interpolating algorithm strategy is analyzed including line and arc rough and fine interpolation method. Cubic B spline is used as fine interpolating algorithm and error evaluation of arc interpolating algorithm is presented. This algorithm model is sample and can be used in many situations.

Abstract: Complex parts are the main object for CNC machining. The 3-TPS hybrid machine tool can achieve 3-axis, 4-axis, 5-axis, vertical and horizontal machining. The analysis of nonlinear error of the 3-TPS hybrid machine tool on 5-axis machining and the reduction the error by self-adaptation linearization are introduced in the paper. The obtained formula for nonlinear error can be used in different situations and estimate three-dimensional cutter evelope forming error.

Abstract: Kinematics, workspace, dynamics behavior of a 3-DOF 3-Legged parallel robot with horizontal slide 3-link for steel snagging, which was developed by Northeastern University, are introduced. The steel spot snagging experiments have also been carried out. The wheel selection, removal rate, grinding power and their influence factors are studied. Comparing with hanging grinders used in most steel mills of our country, this robotic grinder can reduce labor intensity of workers, raise efficiency and guarantee quality greatly.