Help - how to put holes in tube

[cmjay83]

Hi I am very new to inventor I am using 2010 at the minute. I have a problem. I need to draw a tube approx 910mm high X 89o/d. I have go to put 7 holes in it straight through, I am not sure how to do this. I can do it on a square or a rectangular face but it won't let me do it on this because it's round?

 

Appreciate any reply

 

Cheers

[Devented]

Try using the default xy, yz, or xz planes (depending on orientation of your tube). you can sketch on these. then just use rectangular array feature.

[shift1313]

also when you draw on one of these planes(assuming they are in the center of your tube) you can extrude cut in two directions at the same time.

[eribiste]

Yep, as suggested, expand the origin tree, make a suitable plane visible then sketch on it, not forgetting to project geometry so you can constrain and dimension your features as you need. I presume you're familiar with the F7 slice graphics command? When you hit return and extrude, use the cut and mid-plane options to create your apertures.

 

Hope this helps

[cmjay83]

Hi all thanks for the reply. But still having trouble creating a plane it seems to let me create one across the top and bottom of the tube, but won't let me create one vertically.

 

Thanks

 

Apreciate response.

[eribiste]

I wonder if you're doing all the right steps. To do what you want to achieve I wouldn't use the Work Plane tool. In the Model Browser, lower left pane on the screen where all your steps are recorded there is an icon for Origin. If you expand that by clicking on the little plus sign next to it the three 'creation' planes show up. Run the cursor over each one in turn, and one of them should intersect your tube, if you constrained the original circle sketch to the screen origin right at the start of your model.

When you find the plane you like, RMB and check Visibility. You should now have the appropriate plane visible on screen, bissecting the tube, and you can sketch on this plane just like you can with a work plane.

 

Hope that works out for you.

[MarkFlayler]

Try this document for a more precise description. http://imaginit.rand.com/files/Placing Features On Cylindrical Shapes.pdf

[MarkFlayler]

And something I wrote on why you need to use Origin Planes: http://imaginit.rand.com/files/The BORN Technique.pdf

[shift1313]

Here are a couple screen shots for you.

 

The first one shows you the origin point. This point is (0,0,0) and where your yz, xz and xy planes intersect. The second picture shows you my tube cross section drawn at the center point. Notice both circles are fully constrained, coincident with the center point and given a Diameter(and offset for inner circle). Third picture shows you that tube extruded and the 3 planes with Visibility on. you can see my planes bisect the tube(yz and xz) and the tube rests on the xy plane. This allows you to use these planes and not need to create a reference plane. The 4th pic might be a little hard to read but its the two holes sketched on one of those planes and dimmensioned.

[cmjay83]

Thanks for help guys