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  1. 15th Jan 2010 10:15 pm #1
    nikitas350
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    Default Problem with connect 2 circles

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    I have the attached image to do in autocad:

    but i can't figure a way how to connect the circles in order to make the out line. When i use fillet, the line goes from the wrong side. Note that the two little circles have (both of them) radius 14.

    Thanks in advance.....

    Last edited by nikitas350; 15th Jan 2010 at 10:16 pm. Reason: forgot attachment
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  2. 15th Jan 2010 10:44 pm #2
    ReMark
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    What do you mean by "connect the circles"? The two "little" circles are not connected to anything.

    Lines may be "joined" to create polylines. Arcs can be joined to lines as well.
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  3. 15th Jan 2010 11:00 pm #3
    totzky
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    "have (both of them) radius 14. "
    You mean 140?
    Draw The 2-40R's as circles first and use Cirle Tan Tan command to draw the 140R.
    Afterwards you can do a trim.
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  4. 15th Jan 2010 11:07 pm #4
    nikitas350
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    i mean connecting the circles with rad 40 and 28 rad (the one up and the one down) with the arc of 140R
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  5. 15th Jan 2010 11:10 pm #5
    nikitas350
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    the arc does not has a known center
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  6. 15th Jan 2010 11:20 pm #6
    nukecad
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    From the centre of the rad 40 draw a circle of rad 180 (40+140) from the centre of the rad 28 draw a circle of rad 168 (28+140) where these two circles intersect is the centre of the rad 140.
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  7. 15th Jan 2010 11:28 pm #7
    nikitas350
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    Quote Originally Posted by nukecad View Post
    From the centre of the rad 40 draw a circle of rad 180 (40+140) from the centre of the rad 28 draw a circle of rad 168 (28+140) where these two circles intersect is the centre of the rad 140.
    Using this method, the arc is designed by the wrong side.

    edit:
    Mathematically i think that the problem can not be solved...
    Last edited by nikitas350; 15th Jan 2010 at 11:38 pm.
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  8. 16th Jan 2010 01:27 am #8
    ReMark
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    Mathmetically the problem has one flaw. The radius of 185 is incorrect. Other than that the problem can be solved using AutoCAD. Note that the circle command with the TTR option does work as that is what I used to draw the image shown below.

    ConnectCircles.jpg
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  9. 16th Jan 2010 03:04 am #9
    nikitas350
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    Quote Originally Posted by ReMark View Post
    Mathmetically the problem has one flaw. The radius of 185 is incorrect. Other than that the problem can be solved using AutoCAD. Note that the circle command with the TTR option does work as that is what I used to draw the image shown below.
    How did you do this? I draw all the circles expect of the 185 and 110 which i can't draw...
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  10. 16th Jan 2010 03:40 am #10
    mdbdesign
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    Read ReMark post again.
    Mine is below:
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