1 / 16

Motion Transformation Systems

Motion Transformation Systems. The mechanical function of relaying a motion from 1 part to another while altering the nature of the motion. 5 Systems. 1) Rack and Pinion Systems 2) Screw Gear Systems Type 1 3) Screw Gear Systems Type 2 4) Cam and Follower Systems

kelton
Download Presentation

Motion Transformation Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Motion Transformation Systems The mechanical function of relaying a motion from 1 part to another while altering the nature of the motion.

  2. 5 Systems 1) Rack and Pinion Systems 2) Screw Gear Systems Type 1 3) Screw Gear Systems Type 2 4) Cam and Follower Systems 5) Slider-Crank Mechanisms

  3. Rack and Pinion Systems Rotation to Translation or Translation to Rotation Reversible

  4. Rack and Pinion • at least 1 gear = a pinion • 1 straight bar with teeth = rack • teeth on rack and pinion must be identical • frequent lubrication • the greater the # of teeth the slower the rotation

  5. Rack and Pinion Animation http://www.youtube.com/watch?v=D3MrUngdlCQ

  6. Screw Gear Systems Type 1 • the screw is the driver • rotational is transformed into translational • e.g. jacks for lifting cars

  7. Screw Gear Type 1Scissor Car Jack http://www.youtube.com/watch?v=QeB2YxMqogI

  8. Screw Gear Systems Type 2 • the nut is the driver • rotational to translational • e.g. pipe wrenches

  9. Screw Gear Type 2Pipe Wrench http://www.youtube.com/watch?v=HYspwtCZ1yo

  10. Screw Gear Systems • type 1 (car jack) has the nut connected to the screw so that the nut cannot rotate • in both systems the threads of the screws and nuts must match • type 2 (monkey wrench) has the nut fixed so that its only possible motion is rotational

  11. Cam and Follower Systems • transform the rotational motion of a cam into the recriprocating translational motion of a follower • a back and forth movement like that of a sewing machine • cams = rotational axis is centred • eccentric cams = rotational axis is off-centre

  12. Cam and Follower • the follower must be guided in its translational motion • the shape of the cam determines how the follower will move • a device such as a return spring is usually necessary to keep the follower in continual contact with the cam

  13. Cam and follower http://www.youtube.com/watch?v=ZbdsGf_t8hs

  14. Slider-Crank Mechanisms • used in internal combustion engine • to transform the translational motion of the pistons into the rotational motion of the crank

  15. Slider - Crank Mechanisms • the connecting rod contains 2 bushings to attach it to the crank and piston • the cylinder must guide the part moving in translation • frequent lubrication

  16. Slider - Crank Mechanisms http://www.youtube.com/watch?v=KnASJHtbGB0

More Related