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  • Bruno Mueller
    replied
    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.

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  • Bruno Mueller
    replied
    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.

    Leave a comment:


  • doc0455
    replied
    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

    Leave a comment:


  • Bruno Mueller
    replied


    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.

    Leave a comment:


  • Bruno Mueller
    replied
    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.

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    When drilling the mounting flanges.

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    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

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    The distances are correct and everything fits together well.

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    Last edited by Bruno Mueller; 09-16-2020, 09:43 AM.

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  • Bruno Mueller
    replied
    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.

    Leave a comment:


  • Arcane
    replied

    RESIDUAL STRESSES IN IRON CASTING

    http://journal.library.iisc.ernet.in...File/3582/3625

    Leave a comment:


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

    Cheers
    Roger

    Leave a comment:


  • Bruno Mueller
    replied
    Originally posted by Doozer View Post

    Learn more physics, practice less voodoo.

    -D
    what are you trying to tell me.🤔🤔🤔

    Leave a comment:


  • Doozer
    replied
    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

    Leave a comment:


  • Bruno Mueller
    replied
    For my Pillar Tool I designed a rotating table holder. It can hold the drilling table as well as various tool holders. Background of the construction is to bring impact punches in a specific angle on surfaces which are inclined to the axis.
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    The measurements are in millimeters and adapted to my Pillar Toll. If someone wants to reproduce the part, please adjust the dimensions.

    I once started to make the rotating table holder.
    I still had a piece of GG25 Cast-Iron.
    But it was enough for two separate parts, the discs come in between.
    Today I milled and drilled the holes for the clamps and the holes 22mm and 20mm.
    The clamping stones were made with the column drillings.
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    Predrilled holes. The clamping stones are inserted.

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    Spindled out to 21.5 or 19.5 mm and then finished with the machine reamer.

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    Machined on all sides with the cutter head.

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    The two discs for the twisting device were cut on the band saw.


    The thickness of the disks is adjusted so that I get a hole distance of exactly 90mm at the end.

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  • AlphaBob
    replied
    Originally posted by Void View Post
    I took a slightly different approach to the drawbar-wrench-and-hammer-tool:


    I simply got the cheapest wrench that was convenient from the local auto-parts store. Cut off the open end. Milled a slot in a piece of brass rod. Silver soldered the handle in to the slot.

    The grooves in the brass head are to limit the size of chips that will eventually fly off.

    -DU-
    Just wanted to say that this a GREAT piece of work! I've been wanting to build one for a long time and your design is the best I've seen! Well done!

    Leave a comment:


  • Bruno Mueller
    replied
    Originally posted by thaiguzzi View Post

    Good man.
    Greatest motorcycles invented...

    OT, here's mine...

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    Beautiful machine.

    Here is my machine.
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    Click image for larger version

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    The picture was shot only 2 km from my home.

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  • thaiguzzi
    replied
    Originally posted by Bruno Mueller View Post
    ......
    That eagle looks like the Moto Guzzi emblem, identical in fact.
    Stunning work by the way, congrats........


    The eagle is in fact a stylized version of the Guzzi eagle. A friend of mine (commercial artist) drew it years ago. I have received permission from him to use it.
    The logo is a result of my passion for Guzzi.
    Good man.
    Greatest motorcycles invented...

    OT, here's mine...

    Click image for larger version

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  • Bruno Mueller
    replied
    ......
    That eagle looks like the Moto Guzzi emblem, identical in fact.
    Stunning work by the way, congrats........


    The eagle is in fact a stylized version of the Guzzi eagle. A friend of mine (commercial artist) drew it years ago. I have received permission from him to use it.
    The logo is a result of my passion for Guzzi.

    Leave a comment:

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