Shop Made Tools

[Doozer]

The cross slide was pre-milled and left to rest overnight to relieve internal stresses....

Learn more physics, practice less voodoo.

-D

[Bruno Mueller]

Learn more physics, practice less voodoo.

-D

what are you trying to tell me.🤔🤔🤔

[rcaffin]

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

Cheers
Roger

[Arcane]

RESIDUAL STRESSES IN IRON CASTING

http://journal.library.iisc.ernet.in/index.php/iisc/article/viewFile/3582/3625

[Bruno Mueller]

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.

[Bruno Mueller]

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.


When drilling the mounting flanges.


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


The distances are correct and everything fits together well.

[Bruno Mueller]

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.

[doc0455]

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

[Bruno Mueller]

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.

[Bruno Mueller]

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.


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.


Zero position.


Turning range

[Bruno Mueller]

assemblyI added another Nonius to the swivel arm. Now it is also possible to turn the arm in 1 degree steps.


The part was primed and then painted. After the assembly it is ready for use.

[TGTool]

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.

[Bruno Mueller]

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)

[Noitoen]

The Nonius is an invention of a Portuguese navigator mathematician from 1542. He was from a town just 50 Km from where I live

[Bruno Mueller]

Today I made knob screws for the Pillar Tool.



Turn the ball ends with the ball turning device.


At the other end a ball was also turned on. Afterwards the arm between the two balls was finished with a 2 degree bevel.


Here we drilled and cut a M6 thread for the stud bolt.


Finished toggle screws.


And here at their place of destination.