Straightening model and prediction of straightening stroke of precision linear guide rail

In order to improve the straightening precision of flexible automatic straightening machine, a new way of establishing straightening model and predicting straightening stroke is proposed based on bending experiment. In this paper, aiming at the LG series linear guide rails, the mathematical load-stroke model of press straightening process is established based on elastic-plastic theory. The stroke-deflection model can be obtained by simulating the bending process of guide rails based on loading-unloading FEA analysis. And then the precision straightening model of predicting straightening stroke, which is describe as a simplicity formula, can be fit out based on establishing compensation knowledge base achieved from bending experiment and experimental data processing. The experimental results verify this method's feasibility. It will be helpful to the development of automatic straightening machine's control system.