lost in a 4-bar slider design
lost in a 4-bar slider design
(OP)
i was given a new project yesterday to finish the design of a stopping device for a machine. when a arm retracts it will push a lever and raise another arm.
i believe there is some kind of 4-bar mechanics at work but i just can not see how to use the 4-BAR equations i have found online
i have looked on Google and here the problem is i just don't know what points are what to get it to works.
also i cant attach using the paper clip it is grayed out i can email a dwg
thank you for any help

i believe there is some kind of 4-bar mechanics at work but i just can not see how to use the 4-BAR equations i have found online
i have looked on Google and here the problem is i just don't know what points are what to get it to works.
also i cant attach using the paper clip it is grayed out i can email a dwg
thank you for any help






RE: lost in a 4-bar slider design
I tried uploading a file to indicate your 4 bar linkage within your mechanism but it won't work will try again later.
What equations are you talking about relating to the 4 bar linkage, velocity?
RE: lost in a 4-bar slider design
-Dustin
Professional Engineer
Pretty good with SolidWorks
RE: lost in a 4-bar slider design
Thanks for the repleys
RE: lost in a 4-bar slider design
this shows what i have been working with and what i have done i have 2 fixed points and 3 other points.
i dont know out of the 3 other points what would be the end that slides
RE: lost in a 4-bar slider design
None of the ends you have slide, have a look at this link below
it might help:-
http://www.tep.org.uk/PDF/Mech%20V1.2%20(Master)/4%20bar%20link.pdf
RE: lost in a 4-bar slider design
Finish what design? Can you better explain in English what you mean.Or show a sketch of what you have. Copying a Google 4 bar mechanism that has nothing to do with your problem doesn't help, only complicates.
You will never get any meaningful help without a better description.
RE: lost in a 4-bar slider design
Ted
RE: lost in a 4-bar slider design
A sketch as for English 4 other people see the problem and offered helpful advice
RE: lost in a 4-bar slider design
OK, rereading, so I now think you want a tutorial on 4 bar mechanisms and I take it that you will figure out what configuration of that infinity of arrangements will lead you to a solution. Or do you have something in mind and are looking for analytical closure?
However, I must point out that 4 bar mechanisms have NO sliders so maybe you should consider the slider-crank attached to a 4 bar, for example.
BTW, I didn't mean to offend your thinking or writing but it is very frustrating to get problems where we are trying to help, and the poster does not present a clear picture of what he/she is trying to do. Also, we as problem solvers should do a better job of making sure we understand the inquiry instead of speculating what the poster wants.
RE: lost in a 4-bar slider design
Regards,
Cockroach
RE: lost in a 4-bar slider design
We still don't know what equations your struggling with?
Hi Cockroach I can't see a slider crank mechanism, he has two fixed pivots if you look closely at the diagrams, so I see a four bar linkage albeit that it as limited movement.
RE: lost in a 4-bar slider design
If Cockroach is confused, I'm not going to try and bend my mind too much further. Corey, can you state what problems you have with the specific model you are showing, i.e. what constraints are you trying to satisfy?
RE: lost in a 4-bar slider design
RE: lost in a 4-bar slider design