METHOD OF MAKING PIEZOELECTRICALLY ACTUATED DEVICE

摘要

A method of making a piezoelectrically actuated device (82) includes the steps of compressing a piezoelectric element (30) toward a compression state which is based on a target preload for the piezoelectric element (30), and elastically deforming a casing (40) for the piezoelectric element (30) toward a spring state which is also based on the target preload for the piezoelectric element (30). The method further includes plastically deforming the casing (40) about the subassembly (12) when the piezoelectric element (30) and the casing (40) are at their respective compression state and spring state to set a preload of the piezoelectric element (30) at the target preload.