Abstract
The piezoelectric ceramic has inverse piezoelectric effect, which can be used in the manufacture of the mold internal compensation-driven. We design a multilayer structure with built-in array of piezoelectric ceramic to achieve active deformation to compensate the tool-shaped face. A piezoelectric micro-displacement compensation model is proposed based on the inverse piezoelectric effect of piezoelectric ceramic. According to the initial face error of tool or from wear, a certain amount of DC voltage is applied on the corresponding area of the piezoelectric ceramic elements to produce certain amount of shrinkage, achieving the goal to adjust tool surface. Based on this theory, we develop a device with active deformation compensation and propose an optimization algorithm of applied voltage.
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