9 Replies Latest reply on Nov 27, 2017 10:31 AM by Todd Blacksher

    Dimensions of edge before fillets and chamfer

    Wesley Ellgass

      Hello all,

           I am attempting to show the dimensions in a solid works imported drawing of a simple housing and am having some difficulty. The edges that I need to dimension off of have been filleted, and the entire part has been drafted on four sides. Every way that I have tried to dimension this part has failed because the original sketch lines are hard for me to locate. I  have tried to use the point of intersection but that yields far off numbers. Unfortunately me showing a sketch of the edges before the chamfer and fillet will not be acceptable, which does work. I will attach my part and drawing. Please help.

      Thank you,

           Wesley

        • Re: Dimensions of edge before fillets and chamfer
          Kyle Craig

          Hi Wesley,

          I'm not quite sure where exactly you want the dimension extension lines to land.

          Generally I think dimensioning to the virtual sharps is the common approach here.

          a nice quick way to get the virtual sharps is select two edges together (hold control to get them both selected) and click on the point tool within the sketch toolbar.

            • Re: Dimensions of edge before fillets and chamfer
              Todd Blacksher

              Kyle's apparent intersection trick is one of my favorites, I use it all of the time.

              There is another method you might be interested in - while you are in the dimension tool, click the first edge/line, then when you need the apparent intersection for the other leg of the dimension, right click on one of the lines and select "Find Intersection" - this will allow you to select the other line to complete the intersection.

              It might take a little practice to get used to this method, and it may not work for all situations, but it is really handy.

              (It is basically a way to use Kyle's method on the fly.)

              todd

              • Re: Dimensions of edge before fillets and chamfer
                Wesley Ellgass

                I have tried this method, but it seems the edge I used to create the part is not close to the edge of intersection after the fillet. I have in the image attached dimensions it the way you demonstrate, then I dimension it with a sketch shown of the edges before the fillet. As you can see they are pretty far off.

                dims.JPG

                  • Re: Dimensions of edge before fillets and chamfer
                    Jason Young

                    looks as if you are selecting the curve (fillet)....

                    can you not select overall dimensions of the curves (fillets)??

                    • Re: Dimensions of edge before fillets and chamfer
                      Todd Blacksher

                      I modeled a similar part and created a drawing -

                      You can use the "Find Intersection" for both sides, just right click the outermost lines for both sides.

                      (or use Kyle's tip, and Ctrl-Select the outermost lines, then click on point.)

                       

                       

                      Outermost dimension at the base.

                        • Re: Dimensions of edge before fillets and chamfer
                          Wesley Ellgass

                          The image is the front view of a housing that has the front edges filleted, while the part has been drafted as well. So the measurements of 3.000 and 1.500 are what I want. But the method I used was to show the sketch of the edges before the fillets, but I can not keep it this way. I need some other way to find those measurements. I have tried to measure off of the fillets intersections, but that gives me 3.108 and 1.554.

                            • Re: Dimensions of edge before fillets and chamfer
                              Todd Blacksher

                              Wesley Ellgass wrote:

                               

                              The image is the front view of a housing that has the front edges filleted, while the part has been drafted as well. So the measurements of 3.000 and 1.500 are what I want. But the method I used was to show the sketch of the edges before the fillets, but I can not keep it this way. I need some other way to find those measurements. I have tried to measure off of the fillets intersections, but that gives me 3.108 and 1.554.

                              I see what you are saying now - You would like to dimension to the apparent intersection of the fillets and the draft . . .

                               

                              We might want to have J. Mather chime in on this, but I'm going to tell you that having someone verify the dimensional integrity of a part to a tolerance of .001" only using apparent intersections is a really bad idea.

                              Think about the issues you are having finding a way to pull the dimensions on the print, and then put yourself in the shoes of the person that is going to be inspecting the part - how are they going to measure it?

                              Please don't take this the wrong way, remember - We are also trying to help prepare you for "real world applications"

                              todd

                      • Re: Dimensions of edge before fillets and chamfer
                        Jason Young

                        I have been known to draw a sketch on the drawing, using the part....

                        I can the easily attached dimensions.

                         

                        you could try using the filter at the bottom set to snap to the entity you require point, line, face....

                        • Re: Dimensions of edge before fillets and chamfer
                          Jason Young

                          Hold shift when selecting the edges???

                           

                          Worked for me.