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圆上清支大学 OUTLINE Power Screw Introduction © Basic Terminology ©Torque Loading ©Other issues 圈上泽夫道大学 Power Screw Principles The screw thread is one of the most important inventions ever made Power screw using the principle of a screw thread and its mating nut Used to convert rotation to linear motion in actuators,machines(Lead screws)and jacks,etc. Transmit power,exert the necessary force to move a machine element along a desired path. Capable of very large mechanical advantages,can lift or- move large loads,the speed is often slow. 22 OUTLINE Power Screw Introduction Basic Terminology Torque Loading Other issues  The screw thread is one of the most important inventions ever made  Power screw using the principle of a screw thread and its mating nut  Used to convert rotation to linear motion  in actuators, machines (Lead screws) and jacks, etc.  Transmit power, exert the necessary force to move a machine element along a desired path.  Capable of very large mechanical advantages, can lift or move large loads, the speed is often slow. Power Screw Principles
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