Some of my self-made machines.

[Bruno Mueller]

A video of my tiny Hit & Miss Engine.

 

[NapierDeltic]

Clockwork; both in appearance and in motion!
I target this perfection, but it's supposed it will be out of my range!
Congratulations!

 

[ShopShoe]

Bruno,

I really like the way your little Hit and Miss Engine looks and runs.

It is perfection, just like the other projects you have posted here.

Thank You for joining our group and posting your work here.

I am ready to follow along if you start something new and share a build log of your process.

--ShopShoe

 

[Bruno Mueller]

Something completely different from hit & miss engines for once.
A few years ago, I had the idea of building a gear milling machine. While looking for drawings, I came across an article in “The Modell Engineer” magazine and discovered the Eureka tool.
I found the mechanics interesting to rebuild.
I found some material for it in my stash.
I have adapted the english measurements to the metric system. The pawls were hardened after completion.
The main shaft was made of 43 CrMo4 steel, all bolts are also made of this material and partially hardened and tempered.
I have numbered the individual parts according to the drawing.
Last but not least, I found a nice little box for it.

 

[Richard Hed]

Something completely different from hit & miss engines for once.
A few years ago, I had the idea of building a gear milling machine. While looking for drawings, I came across an article in “The Modell Engineer” magazine and discovered the Eureka tool.
I found the mechanics interesting to rebuild.
I found some material for it in my stash.
I have adapted the english measurements to the metric system. The pawls were hardened after completion.
The main shaft was made of 43 CrMo4 steel, all bolts are also made of this material and partially hardened and tempered.
I have numbered the individual parts according to the drawing.
Last but not least, I found a nice little box for it.

How many parts are there to this gear milling machine and how do you attach it to your mill or lathe? I've heard of that Eureka.

 

[Bruno Mueller]

The device is not designed to produce gears. It has been manufactured for the production of tooth form cutters with undercut.
The patent for this is 130 years old.

A total of 15 parts are to be produced.
Incl. springs and bolts.
The device is clamped between the centers on the lathe and moved by a driver.
The drawings can also be found in the book from the Workshop Practice Series No: 17 “Gears and Gear Cutting” by Ivan Law.