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circumference dimension? 2

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rikonen

rikonen

Mechanical
Mar 5, 2005
117
Can a dimension be created to make the circumference of a circle driven? For instance if I wanted to easily draw a circle that measures 20 inches around the circumference can I add a dimension that allows me to specify the 20 inches rather than me calculating the actual diameter or radius? Maybe I'm over analyzing this and missing something but I don't see how I can achieve this.
 
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Add a construction line to your sketch and dimension to 20", then add an equation to the radius dimension.

circumference.jpg


Regards,

Anna Wood
SW 2007 SP2.2, WinXP
Dell Precision 380, Pentium D940, 4 Gigs RAM, FX3450
 
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You can get arc length by selecting endpont-endpoint-arc. I don't know how one could get circumference without endpoints, though.

What application requires a circumference dimension (why would diameter or radius not be sufficient)?
 
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If your trying to use a given amount of material in this case as an example I used twenty feet and you simply without making calculations want to know the diameter it would create. I thought I had read somewhere that you could make the selection a certain way and this could be created but it may have been something else, I'm not positive.
 
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Thank you everyone, I do believe that the picking both endpoints and then the arc is exactly what I had read about. This works exactly as I wanted by creating half a circle, then dimensioning it and mirroring it. I have never used equations in Solidworks, so I guess I could play with that and try it as well. Thanks again, this place is always so helpful.
 
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Anna,
How are you able to copy and paste images directly into this thread? I thought you had to upload pictures to imageshack and hyperlink it here.

Thanks,

Colin

Macduff [spin]
Colin Fitzpatrick
Mechanical Design Engineer
Solidworks 2007 SP 2.2
Dell 390 XP Pro SP 2
nVida Quadro FX 3450/4000



 
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Let's try it:
538i0x0.jpg


Macduff [spin]
Colin Fitzpatrick
Mechanical Design Engineer
Solidworks 2007 SP 2.2
Dell 390 XP Pro SP 2
nVida Quadro FX 3450/4000



 
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one more time:
538i0x0.jpg


Macduff [spin]
Colin Fitzpatrick
Mechanical Design Engineer
Solidworks 2007 SP 2.2
Dell 390 XP Pro SP 2
nVida Quadro FX 3450/4000
 
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Got it CBL! A star for you since I cannot give you beers.

Macduff [spin]
Colin Fitzpatrick
Mechanical Design Engineer
Solidworks 2007 SP 2.2
Dell 390 XP Pro SP 2
nVida Quadro FX 3450/4000



 
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