JTCNCSX3 READY TO GO

[gd.marsh]

Great machines .. fine job on both the mill & lathe ..
Looking forward to completing mine so I can get some work out of it .. instead of putting all the work into it!

Keep up the good work!

[cornbinder23]

Time for a little update!
Got a little time to work on the PDB for the mill.
I am using TTS with plans to implement some sort of toolchanger.....eventually.
This machine mainly is used for aluminum and plastics, I have used it for SS and mild in the past but prefer the beef of the bridgeport over this for the harder to machine materials.
Not saying that it isnt capable of the work, (it's very capable with a little elbow grease)It just helps me keeps the swarf separated for the scrapper.
With that said this is a fairly light duty PDB. I am using the same bellevilles as a few here on the zone for the lighter duty machines. I have not done any testing of tool holding force so I cant really say that it works yet but I will get to testing it soon after I get it all finished up, havent decided if I am going to powdercoat it yet or just beadblast it like the belt drive.
Here are some pics of the parts before finishing.
The spindle "nut" is 1018 as well as the bushing in the lower plate as those parts contact each other for the "floating" design





JTCUSTOMS

[cornbinder23]

And here is a little video of it working, sorry for the mess!!

JTCUSTOMS

"http://www.youtube.com/watch?v=dufeG8mC56g&context=C300e2c5ADOEgsToPDskJfRZm_QPg6-CR3IWDdQNFm"]Power Drawbar

[rwskinner]

Sweet. It looks like it works great. BTW, I got rid of that aweful noise from the splines by adding the second bearing to the top spindle pulley. It supported it enough where the splines don't lean when tightening the belt.

Man, you have a nice machine there !!

Richard

[cornbinder23]

Thanks Richard!
One thing I found with the splines is that if you loosen the capscrews that hold the bearing block in place, you can rotate the spindle by hand and tighten the screws at the same time to find "center".
Then I just make sure when I pull the spindle I index the same spline when assembling. I just didnt do it this time for the video, because everything got tore back down for finishing right after the video.
When you say you added a second bearing, what exactly do you mean? do you have pics? I replaced the upper with a higher quality bearing when I first did the spindle, and I dont have to tighten the belt to the point of moving the splines "noticably" anyway.

JTCUSTOMS

[rwskinner]

R. Sweet posted on the zone here with some prints. It showed machining the bearing retainer a little bit so there was room for two bearings back to back. It worked wonderfully and keeps the pulley from cocking a little when you tighten the belt.

[cornbinder23]

Thanks for the info Richard, I had not seen that before.
All of the 45 builds on here are really making me want some "real" iron
There is a bridgeport around here that could use a conversion, or maybe a hybrid with my RF31 table and a custom column and spindle with linear guides
hmmmm.......
But first, the next project will be to finish up the lathe and start my router build.

JTCUSTOMS

[Starleper1]

Super smooth PDB action. Very nice. Out of curiosity why do you have the ramp up/down set so long on your VFD?

Nice work man.

[cornbinder23]

Lazy I guess, I know I can set the accel/decel times, but that would require me to break out the book,

JTCUSTOMS

[cornbinder23]

Super smooth PDB action. Very nice. Out of curiosity why do you have the ramp up/down set so long on your VFD?

Nice work man.

OK, thanks alot Scott!
I just had 10 min sucked off my life RTFM!!!!
But I set it so there!

JTCUSTOMS

[Starleper1]

Haha OKAY!

Now go make some chips

What VFD are you using again? I can't seem to remember.

[cornbinder23]

Teco CV7300, and it has worked great so far
I have alot of experience with the Allen bradleys and yaskawa's but this is the first Teco I have had, and am very pleased with it.

Now that the PDB is almost complete for the SX3 I have to start on another PDB for the BP.

BTW does anyone know a good source for Mic-6 besides the "bay"
I am looking to build a tooling plate now, followed by the 4th axis

JTCUSTOMS