Papers by Keyword: Camshaft Grinding

Abstract: Conditions for changing acceleration and force spindle when the high-speed high-precision camshaft grinding with the action of follow grinding and the constant linear speed grinding，a step-pocket cavity hydrostatic -hydrodynamic bearings is designed to meet this precision camshaft grinding, and the relationship between eccentricity and bearing stiffness, load are analyzed by the method of finite-element analysis with fluid finite element analysis software.

Abstract: In order to solve the problem that selecting process parameters is difficult and inefficient in NC camshaft grinding, a case-based process expert system is presented, which takes frame method to present cases and utilizes case-based reasoning as the core mechanism of system. One of the typical cases of NC camshaft grinding which are stored in the case base of expert system is composed of three parts including description, solution and evaluation. The expert system generates a new case description according to the characteristics of camshaft to be processed, then forms an evaluation parameter from the similarity and the confidence. In the end, process intelligent matching is obtained by applying the system.

Abstract: In order to enhance the processing accuracy, the surface quality and the processing efficiency of camshaft grinding, a processing parameters selection in NC camshaft grinding based on uniform design, neural network and genetic algorithm was proposed by using CNC8312A NC camshaft grinder to test training samples. The nonlinear mapping relation between processing requirements (inputs) and processing parameters (outputs) was achieved. By comparing the theoretical values with the output values of the neural network, and analyzing the errors between actual measurement results and processing quality requirements, a satisfied result was obtained by applying the model to actual production.

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.