Papers by Keyword: Speed Optimization

Abstract: In non-circular contour grinding process, a theoretical model of constant linear velocity grinding has been established based on the X-C Axis linkage motion principle of grinding machine. Based on this theoretical model, a numerical calculation model, which can be used for practical grinding process and can optimize and regulate the grinding speed, has be built by way of cubic spline fitting interpolation method. The calculated numerical result of this model can switch into NC code of some NC system. According to the motion principle of grinding machine, the geometry information of specific non-circle contour part and the real parameter of the grinding processing plan, the corresponding NC Programming function also has been modularized. An experiment has been done on the NC high speed camshaft grinding machine type of CNC8312A, and obtained the ideal processing effect.At the same time ,it also shows that the proposed method has strong practical feasibility and great practical value.

Abstract: The output speed of ESPCP system is caused by the coupling of multi-factors and it is a typical nonlinear optimization problem. The key factor affecting life of progressing cavity pumping system is the rotor speed. The associated constraints depends on the physical and chemical conditions including pressure difference between pressure difference of the pump two ends, oil viscosity, temperature and wear clearance, etc. Taken these parameters as original inputs, the nonlinear mapping relationship between rotor’s rotational speed and its affecting factors are determined by means of artificial neural network, and establish the output speed prediction model. After the simulation through samples study and by combining field data, it shows that the predicting results is basically in accordance with the observation data, and acquire satisfactory results. The research results show that the artificial neural network is an ideal method of ESPCP system speed optimization.

Abstract: Camshaft is one of the key components of vehicle engines. In this paper, an independent optimization and simulation module for camshaft grinding was developed. First an optimization algorithm based on the least square method was proposed according to the constant linear velocity mathematical model of the camshaft. The algorithm can be used to smooth speed curves and improve machining efficiency and accuracy. Then the real time dynamic simulation of the camshaft grinding process was finished to perform the machining status according to the optimized motion path of the process system components.