Abstract
The factors affecting the processing quality of pin hole on the end face of tractor gearbox were analyzed. The main influencing factors on position accuracy of hole group include ambient temperature, the number of workpieces processed by drilling cutter and so on during precision manufacturing. The early warning rules of processing quality during tractor manufacturing process were proposed based on single-factor analysis and double-factors analysis. Then an early warning model for position accuracy of pin hole was established based on LSSVM while PSO was used to optimize the unknown parameters. The experimental results show that the RMSE of the model is 0.0058 and the RE is 0.075%, which verifies the validity of the established processing quality early warning model.
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