专利名称：Computer controlled hydraulic drive for
index table
发明人：J. Scott Myles申请号：US07/141549申请日：19880107公开号：US04807338A公开日：19890228
摘要：The combination of an index table journaled upon a support upon a vertical axisand a computer controlled hydraulic drive including a hydraulic motor connected to theindex table. A manifold is mounted upon the support and has a pressurized hydraulicchamber with a hydraulic accumulator mounted upon the manifold in communication withits chamber. A hydraulic power supply is connected to the manifold for pressurizing theaccumulator at a pre-set level. An electro-hydraulic proportional valve having a powerconnector and a hydraulic directional control valve has an intake connected to theaccumulator and a pair of outlet feed conduits connected to the hydraulic motor forselectively receiving pressurized hydraulic fluid from the proportional valve for feedingthe motor at a predetermined flow, rate and duration for controlled rotational speed,acceleration and duration of incremental rotation of the motor and index table. Acomputer including a controller having a power source and a power lead is connected tothe power connector for feeding bi-directional variable voltage electric command signalsto the proportional valve in accordance with a pre-selected program.
申请人：J. E. MYLES, INC.
代理机构：Cullen, Sloman, Cantor, Grauer, Scott & Rutherford
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