Patent ID: 6075311
Filing Date: 2000-06-13
Classification: H02N

Abstract:
A micro-positioning flatbed, comprising:a bed having a housing being formed with a positioning groove at a predetermined location, the positioning groove having opposed sides being formed with guides;a resilient first driving unit being formed with a penetrating chamber therein, the chamber having opposing sides configured to correspond to the guides of the bed for assembling the first driving unit in the guides of the bed;a resilient second driving unit being formed with a penetrating chamber therein, the chamber having opposing sides configured to correspond to the guides of the bed for assembling the second driving unit in the guides of the bed in alignment with the first driving unit;a plurality of piezo-electric elements being firmly received in the chambers of the first and the second driving units, and between adjacent ends of the first and the second driving units for firmly coupling the first and the second driving units;wherein the first and the second driving units are each formed with an opening of a predetermined depth on a side thereof;a spring provided in the opening of the first and the second driving units to allow the first and the second driving units to maintain appropriate bond with the guides;whereby each piezo-electric element is controlled by voltages so as to sequentially generate alternate expansion and contraction which cause the first and the second driving units to expand and contract, respectively, thereby causing the first and the second driving units to urge against and release from the guides so as to achieve effects of precise positioning and continuous micro-motion.