MAGNETIC MECHANISM WITH NEGATIVE RIGIDITY

摘要

The present invention relates to the field of ultra-precision vibration damping. A compact magnetic mechanism with negative rigidity, comprising a machine frame (1), a negative rigidity adjustment component, a flexible guide component, and a motion component. The magnetic mechanism with negative rigidity utilizes the repulsion action of reversely arranged magnets to form a negative rigidity property, and the negative rigidity can be adjusted by the negative rigidity adjusting component. An ultra-low frequency vibration damper formed by connecting the magnetic mechanism with negative rigidity and a positive rigidity spring (40) in parallel has an extremely low dynamic rigidity, thus greatly reducing the inherent frequency thereof, such that the vibration damper has a good vibration isolation effect for high frequency vibration interference while effectively isolating ultra-low frequency vibration, thus being suitable for a vibration sensitive ultra-precision machining and measurement device.