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View Full Version : Tools I made for work.



Forestgnome
02-14-2013, 04:49 PM
Man, I sure learned a lot on this project. It was a good experience, and I was lucky my employer was willing to bet on my abilities.
http://www.photoshop.com/users/Jackofalltrades/albums/ab559ab1cb9f433b97ef6feb2d44d1b6

alistair1537
02-14-2013, 04:53 PM
They look interesting - can you show us pics of them in use? Looks like fine skills!

Black_Moons
02-14-2013, 04:54 PM
Very nice looking, but what is a YIG sphere?

Deja Vu
02-14-2013, 05:00 PM
Okay, those are amazing! I've found this, but would like for you to elaborate on your tools use:
http://www.alfamicroonde.com/pdf%20files/ytfdefinitions2.pdf

A.K. Boomer
02-14-2013, 05:01 PM
Your a talent - and nice knurl job to boot.

Forestgnome
02-15-2013, 09:22 AM
Okay, those are amazing! I've found this, but would like for you to elaborate on your tools use:
http://www.alfamicroonde.com/pdf%20files/ytfdefinitions2.pdf

That's the best description of a YIG filter I've seen. Thanks for posting that!

Alistair, you wouldn't see much with them in use. You have a block of metal about 3" square with a round magnet coil on each end. There are access ports in each corner that the tools screw into. You pull a magnet coil and manipulate the tool to the sphere rod under a microscope. Once the tools are locked on, you close everything back up. You need to be able to energize the coils to tune it. The sphere is purposely mounted slightly off center and is a little egg shaped so rotating it changes it's profile in the field. Plus you can move it in and out. The sphere rod is held in place with a spring collet so you can move it around. The more coupled spheres, the sharper the cutoff of the filter. You're watching the bandpass characteristics on the computer while tuning. Unfortunately I don't think I could legally show the inside of the 4-baller.

Duffy
02-15-2013, 10:23 AM
Hey! Tell us you made all these on a DSG 24 X 144:). That is some delicate work. Now if the OOPS box is still empty, you are one FINE craftsman!

Forestgnome
02-15-2013, 12:18 PM
Hey! Tell us you made all these on a DSG 24 X 144:). That is some delicate work. Now if the OOPS box is still empty, you are one FINE craftsman!

Funny you should mention that. It was my original intention to specify the equipment used to show what can be done on used iron. I used a 1962 Sheldon EXL46 (10") and a Diamond Tool Co. horizontal mill from the 1940's. Both are worn to the point that they really need rebuilds. Of course small parts don't suffer too much due to worn ways since all the work is close together. Collets make a big difference. As far as the OOPS box goes, I got pretty lucky. Actually some of the OOPS ended up in the final product since I made the mistake of not adding a scrap percentage to the material list. My procedure was to make one or two extra parts, depending on the number of operations there were going to be.