Optimization for radial knurling connection process of assembled camshaft using response surface method

In the present paper, an optimization of radial knurling connection process of assembled camshaft has been carried out using response surface methodology (RSM) and finite element simulation analyses based on the coupled Euler-Lagrange (CEL) algorithm. In order to evaluate the simulation results, corresponding experiments are implemented. The challenge in optimizing the connection process is to increase static torsional strength and, at the same time, to decrease press-fit load, thus static torsional strength and press-fit load are the objective functions taken into account. The tooth height, tooth angle, and feed, which all have decisive influences on the objective functions, are regarded as independent variables. The optimization results are the key references to design knurling cutters and assembled machines. The conclusion of this study is that the simulation and experimental results are highly consistent and the response model possesses high predictive ability. There exists a group of optimal independent variables under confined conditions.