Pzi Posted February 26, 2012 Share Posted February 26, 2012 Hello. So I'm basically three steps away from completing my work. As you can see it is indeed very simple and primitive, but I am still not able to finish it The thing is: Black tangent arc has a radius of 130. Green tangent arc has a radius of 20. Blue circle has an unknown radius... So how should I complete it? Thanks! P.S. Full drawing I need to clone is located at Quote Link to comment Share on other sites More sharing options...
Scott Moffit Posted February 27, 2012 Share Posted February 27, 2012 I think your blue circle should have a diameter of 44. Once that circle is in place you can then add the two tangent arcs. prob1.dwg Quote Link to comment Share on other sites More sharing options...
nestly Posted February 27, 2012 Share Posted February 27, 2012 If this were a test question, my answer would be that the part cannot be accurately reproduced because the drawing is insufficiently dimensioned. Quote Link to comment Share on other sites More sharing options...
khama Posted February 27, 2012 Share Posted February 27, 2012 Right you are Nestly (As usual), the dimension would have been given otherwise and there are no thicknesses on this drawing. How could they make the bosses and joiner plates without knowing this? From what I can see there are at least 3 or 4 different thicknesses. Quote Link to comment Share on other sites More sharing options...
nestly Posted February 27, 2012 Share Posted February 27, 2012 (edited) You have a point, but I was really only referring to the missing dimensions on that view of the part. I would expect there should be at least one other view with thickness and offset dimension. Edited February 27, 2012 by nestly Quote Link to comment Share on other sites More sharing options...
khama Posted February 27, 2012 Share Posted February 27, 2012 Yes, in Australia you can still do it in that view but you must state the thickness using leaders. 3 view would be more informative for fabrication. Quote Link to comment Share on other sites More sharing options...
ReMark Posted February 27, 2012 Share Posted February 27, 2012 "Blue circle has an unknown radius..." And how were you expecting people to solve for this unknown? Guess? We would be only too happy to help you with your problem but leaving information out is like trying to complete a jigsaw puzzle that is missing pieces. Quote Link to comment Share on other sites More sharing options...
nestly Posted February 27, 2012 Share Posted February 27, 2012 I think the OP is asking whether the radius can be obtained from the existing dimensions. My opinion is that it can't be solved without making certain assumptions. Quote Link to comment Share on other sites More sharing options...
ReMark Posted February 27, 2012 Share Posted February 27, 2012 That would be a lot of assuming. LoL Quote Link to comment Share on other sites More sharing options...
Pzi Posted February 27, 2012 Author Share Posted February 27, 2012 Thanks again for such high quality responses! I really appreciate it. I had a clue that there is not enough information to recreate the drawing (in other words the project is flawed), but, since it's my first individual assignment, I felt the need to ask some other people. Now I can rest assured knowing it's indeed the case! Quote Link to comment Share on other sites More sharing options...
nestly Posted February 27, 2012 Share Posted February 27, 2012 Are there any other views where that missing dimension may be found. Is it an assignment for a class/course? Quote Link to comment Share on other sites More sharing options...
Pzi Posted February 27, 2012 Author Share Posted February 27, 2012 Are there any other views where that missing dimension may be found. Is it an assignment for a class/course? There are no other views. Honestly you guys provided more than enough insights At this very moment mathematicians (including myself), younger IT students and other people are taking this course - number of attendees is in triple digits. To prevent cheating they have to come up with quite a few different drawings which naturally results in a loss of quality... Besides if I had to guess I'd say that students attending advanced courses at some point are given assignments to create assignments for beginners, he he. Quote Link to comment Share on other sites More sharing options...
eldon Posted February 27, 2012 Share Posted February 27, 2012 Perhaps the assignment is also concerned with how to deal with a missing dimension. Going to CADTutor forum will get you full marks Quote Link to comment Share on other sites More sharing options...
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