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Unread 19-11-2004, 20:21
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Re: Making a series of spaced holes around a cylinder in inventor

Quote:
Originally Posted by Al Skierkiewicz
Jim,
In Mechanical Desktop you should be able to generate the holes the same as you would in Autocad but with "associative" properties. Those objects should be able to move with respect to other objects in the drawing and the dimensioning should also autoupdate to reflect changes.

In Autocad I would set a UCS that is perpindicular to a tangent on the cylinder. (This is a simple operation which is easy to see if you are using a 3D view.) Then draw a cylinder of the size needed for the holes in the first cylinder with one end inside and the other outside of the first cylinder. You now have two cylinders intersecting each other. Using polar array with the center of the first cylinder as your center point of the array, generate a number of cylinders that matches the number of holes you need. You now have one cylinder that is pierced by several other cylinders. Now using the "subtract" command, use the arrayed cylinders to cut holes in the first cylinder. All of the arrayed cylinders will disappear leaving the holes you need.
I would block the polar array objects first. That way you can use the block to fill in holes if they don't appear where you want, (use the "Union" command) and then place the object whereever you need the new holes.
Al,
Now you did it - forget that electrical stuff - you're on the mechanical design team next year!

Raul
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Warning: this reply is just an approximation of what I meant to convey - engineers cannot possibly use just written words to express what they are thinking.
 


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