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  • Originally posted by Bruno Mueller View Post
    The cross slide was pre-milled and left to rest overnight to relieve internal stresses....
    Learn more physics, practice less voodoo.

    -D
    DZER

    Comment


    • Originally posted by Doozer View Post

      Learn more physics, practice less voodoo.

      -D
      what are you trying to tell me.🤔🤔🤔
      Many greetings from Germany
      Bruno
      http://www.mueller-bruno.de

      Comment


      • Perhaps cast iron does not have too many internal stresses?
        Maybe.

        Cheers
        Roger

        Comment



        • RESIDUAL STRESSES IN IRON CASTING

          http://journal.library.iisc.ernet.in...File/3582/3625
          Location: Saskatoon, Saskatchewan, Canada

          Comment


          • Originally posted by rcaffin View Post
            Perhaps cast iron does not have too many internal stresses?
            Maybe.

            Cheers
            Roger
            If the iron casting is well deposited, preferably for weeks in the open air, then it has nearly no tension.
            Fresh cast iron also has inner tensions.
            I had made the sled from cold drawn steel. When machined on one side, it tends to warp.

            Many greetings from Germany
            Bruno
            http://www.mueller-bruno.de

            Comment


            • I continue with my swivel arm for my Pillar Tool.

              Today I continued working again.
              The two flanges were turned, drilled, thread cut, slots milled, dowel pins set.
              When it was finished - first trial assembly - everything fits.

              Klicke auf die Grafik für eine vergrößerte Ansicht  Name: IMG_20200916_104956.jpg Ansichten: 0 Größe: 994,0 KB ID: 1899686
              When drilling the mounting flanges.

              Klicke auf die Grafik für eine vergrößerte Ansicht  Name: IMG_20200916_140050.jpg Ansichten: 0 Größe: 1.006,5 KB ID: 1899687
              The two parts of the swing device.
              The pulley diameter is 54mm, contrary to the drawing.
              The slit distance is center to center 42mm.
              The 3mm dowel pins are uncritical, I have placed them next to the counterbores of the fixing screws

              Klicke auf die Grafik für eine vergrößerte Ansicht  Name: IMG_20200916_125322.jpg Ansichten: 0 Größe: 990,8 KB ID: 1899688
              The distances are correct and everything fits together well.

              Klicke auf die Grafik für eine vergrößerte Ansicht  Name: IMG_20200916_125340.jpg Ansichten: 0 Größe: 1,03 MB ID: 1899689Klicke auf die Grafik für eine vergrößerte Ansicht  Name: IMG_20200916_125348.jpg Ansichten: 0 Größe: 1.012,4 KB ID: 1899690
              Last edited by Bruno Mueller; 09-16-2020, 09:43 AM.
              Many greetings from Germany
              Bruno
              http://www.mueller-bruno.de

              Comment




              • Click image for larger version

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                Swing range left and right.

                The next step is to make everything a little more attractive.
                Mill the outer rounding on the arms, mill a small cutout for the screw heads on the disc.
                For the clamps drill 1.5mm fitting bolts and mill a 1.5mm slot in the clamps as a guide.
                Apply graduation.
                Last but not least I will also make two knob screws.
                Many greetings from Germany
                Bruno
                http://www.mueller-bruno.de

                Comment


                • I know how it is making your own tooling I worked in the tool room and built many hydraulic holding fixtures some were huge and some blank pierce and form dies. I ended my career as a tool design engineer working with CAD instead of out on the shop floor. But I did miss being out on the shop floor that is what pushed me into setting up a home shop. I dn't take very good picture that is why most of my postings are youtube videos my channel name is doc0455 ifyou want to stop by and check out small model engines and sme shop made tools.
                  Catch Ya Later

                  Comment


                  • Originally posted by doc0455 View Post
                    I know how it is making your own tooling I worked in the tool room and built many hydraulic holding fixtures some were huge and some blank pierce and form dies. I ended my career as a tool design engineer working with CAD instead of out on the shop floor. But I did miss being out on the shop floor that is what pushed me into setting up a home shop. I dn't take very good picture that is why most of my postings are youtube videos my channel name is doc0455 ifyou want to stop by and check out small model engines and sme shop made tools.
                    Catch Ya Later
                    Wow, you have a very impressive collection of videos on this channel.
                    I will watch the videos once in a leisure hour.

                    In my basement workshop I do not have good lighting conditions and the space for a video camera is also not available.
                    Therefore I only take pictures from time to time.
                    Many greetings from Germany
                    Bruno
                    http://www.mueller-bruno.de

                    Comment


                    • The part is ready for priming and painting.
                      This morning the look a little bit more pleasing. Added the graduation and extended the turning radius a bit.
                      The numbers were applied with the Scripta engraving machine, just like my logo.

                      The outer rounding of the locating holes was milled step by step on the dividing machine. I always turned the dividing device one crank revolution (9°) further and milled a surface afterwards. That was a total of 18 passes per round.
                      At the very end the rounding was removed with abrasive cloth.


                      Milling the rounding.

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                      Graduation attached and pre-assembled. The dividing lines are each at 5°. An even finer graduation would hardly have been possible on the small diameter.
                      The recesses for the screw heads are clearly visible. This allows a swivel angle of 45° on each side.

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                      Zero position.

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                      Turning range

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                      Attached Files
                      Last edited by Bruno Mueller; 09-17-2020, 08:30 AM.
                      Many greetings from Germany
                      Bruno
                      http://www.mueller-bruno.de

                      Comment


                      • assemblyI added another Nonius to the swivel arm. Now it is also possible to turn the arm in 1 degree steps.
                        Klicke auf die Grafik für eine vergrößerte Ansicht  Name: DSCN2431.JPG Ansichten: 20 Größe: 860,4 KB ID: 1900078

                        The part was primed and then painted. After the assembly it is ready for use.
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                        Last edited by Bruno Mueller; 09-18-2020, 09:20 AM.
                        Many greetings from Germany
                        Bruno
                        http://www.mueller-bruno.de

                        Comment


                        • I hadn't seen "Nonius" used that way so I had to look it up. It is a way of dividing into finer segments, originally developed for the astrolabe and consisting of concentric circles, each with a different number of divisions. That was subsequently refined to the vernier by the French mathematician who gave it his name.

                          Is Nonius a more common usage in Germany than Vernier? I'm sure the French have their home town favorite and had the impression that it was an almost universal term.
                          .
                          "People will occasionally stumble over the truth, but most of the time they will pick themselves up and carry on" : Winston Churchill

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                          • In Germany, vernier (Nonius) is a common term for fine graduations, be it angular degrees or distances.
                            So you can also find a nonius on a caliper gauge. The measuring drum of a micrometer gauge also has a nonius in this sense.

                            Yes, my region is very much influenced by the French language. We were under French administration here after the French Revolution until 1814. After World War I and also after World War II we were occupied by French troops. In the regional language many French vocabulary and words can be found.

                            Here is a link to an article about this time.
                            https://de.wikipedia.org/wiki/Linkes_Rheinufer
                            https://de.wikipedia.org/wiki/Rheinhessen_(Provinz)
                            Last edited by Bruno Mueller; 09-18-2020, 10:56 AM.
                            Many greetings from Germany
                            Bruno
                            http://www.mueller-bruno.de

                            Comment


                            • The Nonius is an invention of a Portuguese navigator mathematician from 1542. He was from a town just 50 Km from where I live
                              Helder Ferreira
                              Setubal, Portugal

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