Vandall Posted September 28, 2011 Share Posted September 28, 2011 Hi all, I am new here so please be gentle. I have been using AutoCad LT for a few years and recently moved onto 2012 LT at work, however I was able to purchase a full version of both AutoCad 2012 and Inventor Professional 2012 as I am keen to get into 3D modelling etc. Usually i pick a project that I am interested in and use this interest to learn the software and with Inventor I am modeling a Lotus 7 Replica chassis etc. So far I am doing well I have most of the basic chassis components and assembled them using constraints. MY PROBLEM I have now been stuck on a chassis member for about 5 days and admited defeat so need your help. The metal rail is a 25x25x3.2 shs and it needs to be tapered in two directions at one end. I can't seem to get the angles right and feel like I am going around the houses rather than using a simple technique that I am sure exists. I have attached a simple screen shot of what I am trying to draw. Can you please help? Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 Hi Sphiinx, thanks for getting back so quickly. How i read the part is that the 61.5deg face also slopes back 34deg so is slanted on two planes with a mutual base point. How would I do that to the face? Quote Link to comment Share on other sites More sharing options...
Sphiinx Posted September 28, 2011 Share Posted September 28, 2011 for cad t.dwg Here ya go... Quote Link to comment Share on other sites More sharing options...
Sphiinx Posted September 28, 2011 Share Posted September 28, 2011 Im sorry , the quick response was wrong, so i removed it quickly... the revised is up now. sorry for that. Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 Sphiinx, Tx Is it easier to do this in Autocad 2012 and then import into Inventor? How would I do this in inventor? Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 In Inventor - Create a line at the first angle. Create a Workplane using the line and one of the base workplanes at the second angle. Use the Split command with the workplane. There are other techniques as well. Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 Thank You. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 An alternative is to create angled line on first face. Create second angled line on second face. Two lines define the plane. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 Im sorry , the quick response was wrong, so i removed it quickly... the revised is up now. sorry for that. You have not attached a correct example? Of course this is far far easier to do in Inventor than AutoCAD. Quote Link to comment Share on other sites More sharing options...
Sphiinx Posted September 28, 2011 Share Posted September 28, 2011 You have not attached a correct example?Of course this is far far easier to do in Inventor than AutoCAD. I had posted the wrong one originality, and in the 30 seconds it took me to realize it... he had responded already. It should be correct now. I have not tried Inventor yet. Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 I have split each face using the two angles. Do I simply extrude/cut now on each face? Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 The one you said was "revised is up" is not correct. You should name with something like for_CAD_t_Rev1.dwg to keep things straight. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 I have split each face using the two angles. Do I simply extrude/cut now on each face? One Split - not two. See the images I added to previous post. Attach your file here if you can't figure it out. Quote Link to comment Share on other sites More sharing options...
Sphiinx Posted September 28, 2011 Share Posted September 28, 2011 I did not realize it was tilted in two directions on the same side... nice catch. ill have to fix the cad drawing now... just out of shear principal Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 I have one split and now created the plane as indicated previously. How do i extrude/cut this? Sorry for being a dumb ass - Im not normally this thick Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 File Attached for Simplicity Rear Bulkhead Left Side Diagonal_01.ipt Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 Its amazing really - I can design and draw whole structurally glazed fascades to universities and the like that span upwards of 9 floors yet draw a cut across a face in two planes and Im ******ed!! However as I haven't been trained on Inventor I don't think my chassis is too bad so far. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 You don't Extrude - you use the Split command with the Trim Solid option. Are you useing the Frame Generator in Inventor to design that frame? (it sounds to me like you might be doing wayyyy too much work as the Frame Generator will trim frame members for you. See attached. Rear Bulkhead Left Side Diagonal_01.ipt Take a look at the feature tree. One Split. Quote Link to comment Share on other sites More sharing options...
Vandall Posted September 28, 2011 Author Share Posted September 28, 2011 JD, Urm - Frame Generator - arr Seriously I have aproached this from what i believed was a logical angle (no pun intended). I have created part files for each part and then created an assembly file where each part is attached to the others via constraints. I imagined that once this was done i would follow through to the weldment area and so on and so forth. Basically as you would actually build the chassis. Is this the wrong way? (At 42 I understand there are no stupid questions other than the ones you dare not ask but know you should only to be stopped by pride) I don't mind redoing all the work as long as I do it correctly. Tx Quote Link to comment Share on other sites More sharing options...
JD Mather Posted September 28, 2011 Share Posted September 28, 2011 JD, Urm - Frame Generator - arr Tx Does that mean that you have had difficulty with Frame Generator - or that you didn't realize that there is a Frame Generator built into Inventor? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.