What projects are you working on now?

[WallCrawler]

What is one of your greatest challenges so far? With a project you’re working on now, and how did you make out, with this challenge??

[WallCrawler]

nice

[jimglass]

In the last 9 months I constructed my own wire EDM machine from mostly discarded materials. A year ago, I built a sinking EDM. The power supply was built with directions from a book witten by Robert Langlois "Build an EDM". I thought going from a sinking EDM to a wire EDM would be easy since I had a power supply.

Well, the wire EDM was a bigger challenge than first thought but I got it working. The X/Y axis are powered by DC gearmotors, also homemade. The feed screw is 1/2-20 threaded rod. In part of the gear reduction I installed an encoder which was a gear with 50 eq sp holes. The space between each hole was .001" of travel. I then used fiber optics to site through the holes and send counts to an Allen-Bradey PLC. So, to move .250", counters were preset to 250 counts. The PLC determines which gearmotor is forward, stop, reverse. Only rectangular holes can be made, but it works.

Hope the pics print
Jim

[jimglass]

Always wanted to learn CNC so last fall I built my own machine.
x/y/z axis run on linear ball bearings on Thompson shafting. I used a Xylotec driver board which connected to the printer port of my laptop.

The goal was to make my home built wire EDM CNC controlled. Now I'm having so much fun the the CNC mill, I doubt the EDM with ever be converted. The wire EDM has to many original features to be changed
Jim

[CNCadmin]

What does a EDM do?

[jimglass]

EDM stands for electronic discharge machine. They generate a spark between an electrode and the workpiece. This spark wears a path through the workpiece. The path takes the shape of the electrode. In a sinking EDM, an electrode could be made square and then square shaped holes can be burned and so on. Sinking EDM's are priceless when a tap or drill bit breaks off in a workpiece. The taps and drills can be burned out using a small electrode. The main reason I built one.

In a Wire EDM the wire is the electrode and since the wire is round it can feed in any direction under CNC control. Fresh wire is feed into the work area as it wears.

The pic is my home built sinking edm. Both types of machines are impressive to watch run.

Jim

[WallCrawler]

That is really cool...

[Culverson]

That took a lot of planning as well as planning-nice job. I am going to start purchasing quite a bit of equipment in a month and begin manufacturing small percision components for my RC planes & helis. One in paticular (heli) is no longer being manufactured, so I have the need to make the parts I need myself.

Myself I have experience in the engineering department with an auto manuf., as well as a few years working with some really proficient machinists over the years. I have a bit of catching up to do myself..

[WallCrawler]

Hey Bro..

[CNCadmin]

I'm converting a Vertical mill to CNC, that's my new project right now.

[aashu]

I am looking forward to see it happeneing . Very interesting and would like to build one sometimes in future ..

Good luck

[CNCadmin]

Originally posted by aashu
I am looking forward to see it happeneing . Very interesting and would like to build one sometimes in future ..

Good luck

Well when your ready, I'll help you built it.