Reciprocating motion

Fri, 1 Oct 2010

 

This mechanism is used to convert between rotary motion and reciprocating motion. In this mechanism the straight line motion stays at a constant speed throughout the full length of the throw.

Comments (26)

  • Anonymous November 5, 2010 at 8:03 pm

    Do you have a printable model

    Do you have a printable model for this?

    • robives November 5, 2010 at 9:03 pm

      Not at the moment but it

      Not at the moment but it should be possible to adapt the rack and pinion here.

      Rob

      • Blakymcblack March 11, 2012 at 11:34 am

        Or you could now adapt the

        Or you could now adapt the New Flip Face mechanism Variant

      • Anonymous May 21, 2012 at 9:30 am

        this very good i love it 

        this very good i love it 

  • Anonymous June 23, 2011 at 2:30 am

    It looks like intermitent

    It looks like intermitent motion based on the gear, but it isn't. What is the application?

    • Anonymous August 19, 2011 at 2:51 am

      do you have a buildable copy

      do you have a buildable copy of this

    • Anonymous March 22, 2012 at 8:21 pm

      This motion was found in

      This motion was found in 'Climax' wind engines. The wind turned the pinion and the yoke moved vertically up and down, usually to pump water from wells for cattle in remote places.

  • Anonymous October 3, 2011 at 2:43 pm

    Seems to be constant motion

    Seems to be constant motion along length of travel. Therefore the switch between the slide's movement in one direction and the other would have to be instantaneous?  Is this right?   

    • robives October 3, 2011 at 5:03 pm

      Yes, the motion switch is

      Yes, the motion switch is instantaneous. Could be a problem with a real life mechanism, there would be a danger of the teeth snapping off.

      • Anonymous October 13, 2011 at 1:33 pm

        i am so thankful ii found

        i am so thankful ii found this

        • Anonymous October 14, 2014 at 7:25 pm

          me 2 
          wonderful and

          me 2 

          wonderful and beautiful 

      • Anonymous January 25, 2012 at 4:06 am

        Where did this wonderful

        Where did this wonderful mechanism originate?

        I’m not sure, does anyone know? – RI

      • Libby February 17, 2015 at 1:47 pm

        do you have any examples ?

        do you have any examples ?


  • Anonymous November 18, 2011 at 5:48 am

    can the speed of this model

    can the speed of this model be reduced??????

    • Anonymous November 18, 2011 at 12:29 pm

      Great work rob, from the

      Great work rob, from the chaps of walbottle campus

  • Anonymous February 15, 2012 at 11:04 am

    Hey guys im a robo nerd and

    Hey guys imrobo nerd and im hoping to create a human like robot what sort of mechanisms could i use for the fingers??? i was thinking of using recipricating mechanisms

    • Blakymcblack March 11, 2012 at 11:32 am

      Try the quick return method

      Try the quick return method found here:

       

      http://robives.com/mechanisms/quickreturn

  • Anonymous May 18, 2012 at 8:22 am

    Thanks a lot 4 the animations

    Thanks a lot 4 the animations Rob; they helped us a lot to fully understand the concepts in mechanisms. Keep up the good work!!!!! From the Form 2C Design & Technology class of 2012 – Selepa Junior Secondary School ; Francistown – Botswana.

    You are welcome! I am glad they were helpful – RI

  • Anonymous September 17, 2013 at 5:19 am

    This is EXACTLY what I was

    This is EXACTLY what I was looking for! I needed constant left-right motion utilizing only a simple rotary gear, and here it is!

  • Anonymous November 3, 2013 at 10:16 pm

    i’m confused… why is the

    i'm confused… why is the example there if it shows linear and rotary when the topic is reciprocating???

     

    Reciprocating mean back and forth. You can have reciprocating linear motion as with the blue yoke on this animation – RI

    • Smelter November 4, 2013 at 10:52 am

      Rob uses simple mechanisms to

      Rob uses simple mechanisms to illustrate mechanical principles.
      Most reciprocating or linear motions are generated from rotary sources as in Rob's illustration above.
      The only true linear motion I've seen in use are electrical linier motors. You can read about them here :- 
  • Anonymous May 20, 2014 at 5:04 pm

    Thank you so much. This would
    Thank you so much. This would be absolutely perfect to adapt to a bicycle powered washing machine, which idealy needs to reverse direction so that the water and clothes in the drum sloshes one way then the other but the cyclist just keeps cycling one way. I was looking at all sorts of complicated mechanisms! This is so great.

  • Anonymous October 15, 2014 at 6:59 am

    Hi i wouldnt say i know next

    Hi i wouldnt say i know next to anything about mechanisms so this question may seem simple and laughable but i was curious as how one who predict the total linear distance traveled that the mechanism would produce,

    is it based on the diametor of the gear driving it or some other factor? ( ie bigger gear more distance )

    the distance moved is related to the size of the gear. If the gear were to tune a full turn the distance would be the diameter of the gear times pi. In this example though, the teeth are only around roughly one third of the gear so the distance is the diameter of the gear, times pi, divided by three. – RI

    • Smelter October 16, 2014 at 7:49 am

      Rob

       

      I believe “time” is

      Rob
       
      I believe "time" is not a factor here 🙁
       
      "the distance is the diameter of the gear, time pi, divided by three."
       
      It would be a bit clearer to write the formula :- Distance = (Diameter x Pi) / 3
  • Anonymous June 11, 2015 at 1:11 am

    This looks similar in concept

    This looks similar in concept to #114 on 507 Mechanical Movements (http://507movements.com/mm_114.html)

  • hugh jazz March 22, 2017 at 1:50 pm

    piff ting
     

    piff ting

     

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