Re: [CAD_CAM_EDM_DRO] Re: 4 Bar Linkages

Ah...the old parallelogram (never heard of it referred to as a fourbar
linkage before) .... somewhat different from four bars of UNEQUAL length
though.

Smoke

-----Original Message-----
From: Greg Jackson <jackson@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Tuesday, March 06, 2001 5:52 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: 4 Bar Linkages

>4 bar linkages are everywhere, but people don't normally recognize them.
>The parallel bar mechanism of an architect's style clamp on desk lamp is a
>4bar. The typical hydraulic door closer on commercial doors is a 4bar.
>The lift hinge on many auto hoods is a 4 bar. Most of the new "European
>style" kitchen cabinet hinges are 4 bar. The lift of an accessory outboard
>motor is 4 bar. If you can identify 4 hinges that all move in a linked
>fashion, it's probably a 4 bar.
>
>G. Jackson
>
>
>
>At 05:04 AM 3/6/01 -0700, you wrote:
>>Ballendo,
>>
>>You must have seen four bar linkages before. If you haven't look them up

in

>>some engineering text they are a fascinating study on their own. It is
>>amazing the types of motion you can achieve with four bars of unequal
>>lengths.
>>
>>Now for your four bar linkage method, after the fourth bar linkage was
>>usually achieved but immediate separation was desired once you had sobered
>>up :-))
>>
>>--Greg Nuspel
>>
>>Wingcraft the core of great models.
>>http://www.wingcraft.com
>>
>>----- Original Message -----
>>From: <ballendo@...>
>>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>>Sent: Tuesday, March 06, 2001 4:59 AM
>>Subject: [CAD_CAM_EDM_DRO] Re: 4 Bar Linkages
>>
>>
>>> Joe,
>>>
>>> 4 bar linkage. I don't know what this is, although I did provide a
>>> guess :-)
>>>
>>> Ballendo
>>>
>>>
>>> --- In CAD_CAM_EDM_DRO@y..., Joe Vicars <jvicars@c...> wrote:
>>> > To what term were you reffering?
>>> >
>>> > ballendo@y... wrote:
>>> >
>>> > > Joe,
>>> > >
>>> > > This is a new term to me. What is it?
>>> > >
>>> > > Thank you in advance.
>>> > >
>>> > > Ballendo
>>> > >
>>> > > P.S. Sounds like my 20's, where the Friday night motion path was:
>>> > > Go to the 1st bar, try to "come up with" linkage, Go to the 2nd
>>> > > bar...
>>> > > Eccentricities tended to enter the motion path at the 3rd and 4th
>>> > > Bars, and "linkage" was never assured... :-)
>>> > >
>>> > > --- In CAD_CAM_EDM_DRO@y..., Joe Vicars <jvicars@c...> wrote:
>>> > > > Can someone recommend a text, website, software, or any other
>>> > > utilities
>>> > > > for 4 bar linkages? I need a method of comming up with a 4 bar,
>>> > > knowing
>>> > > > the motion path.
>>> > > > Thanks
>>> > >
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>>
>>
>>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
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>>List Manager
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>
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
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>List Manager
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