Monday, September 26, 2011

Adapter plate done

With some help from the CNC mill, I pilot drilled this hole pattern and finished the drilling/countersink with the manual mill. 



 Once mounted, the plate/chuck assembly was centered by checking runout with a dial indicator ±0.001



 Meanwhile, Daniel is cranking out dinosaurs!


 Anyway, back to 4 axis machine testing! Almooooost there! Got the first program up and running after some more alignment of the rotary table.


Bleh, got this far and realized the rotary table motor is up to 230° Farenheit! Usually should not exceed 180°F. Probably just needs a lower amperage setting on the Gecko drive.



More to come soon!

Saturday, September 17, 2011

Practice practice!

The past six weeks have been filled mostly with repetition and progression of existing projects. The 4th axis is progressing nicely, almost finished with the final step of making a custom adapter plate for a 3 jaw chuck. I mostly plan to use round stock material on the 4th axis so a self-centering chuck is needed for a quick and accurate part change out.


The Bridgeport mill has been getting some good ol' fashion trial and error practice making parts. After 7 attempts I finally have an "acceptable" quality part for a custom racecar project. Each piece was an experiment with different cutting strategies. There is much to learn!



 The bad news is I ruined 1 drill bit and 3 new end mills trying, but the good news is I learned ALOT!
It's quite a satisfying feeling to see the mess that a running machine makes! You may notice the coolant spray that has been added to the machine :-) Once the cutting begins there's alot of heat generated! That's how the above picture has melted aluminum in the teeth of the cutter...



Not a huge pile of swarf, but hopefully a sign of bigger ones to come!