griff701 Posted January 22, 2015 Share Posted January 22, 2015 Hi, I'm a student and have the task of modelling a spanner, that changes proportions depending upon the distance specified for the jaw opening. (Distance AF) I have a drawing that works perfectly (as far as I can tell) - If the AF distance changes, everything else updates. How can I convert the 3 marked lines in the drawing into construction geometry (so I'm left with the coloured area) without it destroying the functionality? I've tried splitting the lines (that results in unconstrained geo and it doesn't update properly), trimming them (that failed as well), and even building the entire drawing in construction geometry and trying to convert the bits I want to keep. Am I missing something really obvious? Thank you. (Highlighted area is mine) spanner12a.ipt Quote Link to comment Share on other sites More sharing options...
SLW210 Posted January 22, 2015 Share Posted January 22, 2015 I moved your thread to the Autodesk Inventor Forum, please post Inventor questions, there. Quote Link to comment Share on other sites More sharing options...
griff701 Posted January 22, 2015 Author Share Posted January 22, 2015 Sorry - I thought I had. (When I hit 'submit' the forum decided I wasn't logged in after all. I Refreshed the page and must have gone back a level) Quote Link to comment Share on other sites More sharing options...
kpyoung333 Posted January 22, 2015 Share Posted January 22, 2015 At first glance I would say you can break the ellipse lines at their center intersections (make sure they still have the tangent constraints on, check by F8, also check Show All Degrees of Freedom and make sure that it is full constrained), turn them into construction lines, then you might have to right click on the segments and CLOSE LOOP and choose the area lines you want. A lot of times when I draw complex extrusions I have to close loops or delete the Project Geometry (Project Cut Geometry is especially unfriendly when trying to do extrusions and revolves). Once you get it working you can set up your iLogic Form (make sure in VIEW>User Interface>iLogic Browser>Check Box: ON) for easy manipulation of your constraints. Quote Link to comment Share on other sites More sharing options...
griff701 Posted January 23, 2015 Author Share Posted January 23, 2015 (edited) Its 2.00am and I still cant get things to work - but I wanted to say thanks for your time. Every time I try to do something I get either 'Failed to split curve', 'Adding this restraint will over define the drawing' or 'Constraint already exists'. I tried closing the loop to be told 'a coincident restraint is missing, would you like to add it?', selecting 'yes' gives.........'Adding this restraint will over define the drawing' haha Edited January 23, 2015 by griff701 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.