Papers by Author: Huan Yong Cui

Abstract: In order to achieve parametric design of the various components and parametric assembly of scissor lift platform, this paper describes SolidWorks secondary development technology which is based on C# and application ACCESS database technology which is for parameters storing of various parts. Parametric design is achieved by programming code. Finally, to achieve light-weight design ,we use the finite element method to optimize the size of the model structure.

Abstract: Current scheduling approach for multiple objective flexible job shop problem (FJSP) cannot construct a precise scheduling model and obtain a satisfactory scheduling result at the same time. To deal with this problem, a simulation optimization scheduling approach was presented which was composed of two basic modules: the Fast non-dominated Sorting Genetic Algorithm (NSGA-II) module and Witness simulation module. Firstly, a multi-objective mathematical model was found for FJSP and NSGA-II was applied to solve. Then, a set of Pareto optimal solution was obtained by NSGA-II module. In order to select the final solution from the Pareto optimal solution for FJSP, the simulation model was set up by Witness, every Pareto solution was as input for simulation model. Finally, the final solution can be selected according other performance indicators.

Abstract: The study reports a new surface formation technology during manufacturing process of parallel indexing cam mechanism, ion beam sputtering deposition, in which the operation temperature can be controlled below the limitation of phases exchanging or at room temperature. Phase exchanging deformation can be avoided and the shape accuracy and dimension accuracy can be improved compared with surface quenching process. The microstructure and properties of TiAlN/AlN composite film deposited on the profile surface of cam (made of 45 steel) by ion beam sputtering deposition were discussed. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscope (TEM) analysis has been used to characterize film’s microstructure and properties. The micro-hardness and adherence grade were tested.

Abstract: Based on the gear geometry theory and the normal meshing motion equation of gear pairs， changes of meshing points and angles are analyzed and the effect of tooth trace modification on gear pair meshing movement is discussed. It is concluded that chemical milling can effect tooth trace involute modification of fine-forged spur bevel gear, improve its surface quality and dimensional precision and therefore prolong its service life.

Abstract: Gear tooth profile modification can be featured to improve working stability of gear equipments, abate noise and vibration, enhance loading ability and prolong usage life of the gears. Fine forged spur bevel gear are formed with molds, so it is economical to modify the gears by means of modifying mold cavity. Whether the modified gears can be separated from the mold with easiness is proposed to be the basic criterion of gear tooth profile modification design. Near the big ends and tooth roots is mainly the area which affects demolding after modification. According to the modified gear configuration, mathematical model is built to calculate the demolding check at any modification points on the fine forged spur bevel gear profile. And a corresponding program is developed, which is the main tool for the gear tooth profile modification design, and practical calculation has carried out.