国上活我人隆 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,production 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 国 上活大学 Power Screw Applicationsl ·Power screws >Either screw can move,as in a jack or >Nut can move,as in a positioning device. servomotor Head Lever 十 coupling Sq.threaded rod lead screw nut-3 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, production 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 Principles1 4 Power Screw Applications1 •Power screws Either screw can move, as in a jack or Nut can move, as in a positioning device