Trying to get higher metal removal rates on the Boss

[F14]

My VFD is not vector control. It is only an inverter. I would probably go for a GS series VFD from Automation Direct to have that option.

 

[EmGo]

CAM paths tend to do a lot of stupid things that we ignore with 2000ipm rapids

But but but ... that's archaic thinking ! What are you proposing here, a return to the 1980's ?

 

[EmGo]

Got curious. Looked up my old machine parameters ...

IF I did my math right, 300 ipm in half a second on X

Santa Cruz Mike had a late-model Chevalier with a current control. He picked up an old ExCell-O 104 with an outmoded Bendix and old-technology DC Getty's drives, Luddite Edition.

Ran the same parts on both machines, same program and tooling even, and the 104 was about 15-20% faster. Them oversize DC drives shit-n-git

The 104 is a nice little machining center.

 

[Peter from Holland]

My VFD is not vector control. It is only an inverter. I would probably go for a GS series VFD from Automation Direct to have that option.

My solution has nothing to do with vector controlled or not

Peter

 

[EmGo]

Here is a picture of the part. It's a bedplate for a little engine. The original weight is 570oz on the stock and the finished weight is 167oz.

currently, the time to machine that side is around 2.5 hrs. By the time I have the whole part finished, it's probably closer to 4 hrs.

View attachment 272105

Do they still have castings back there in Ohio ?

 

[Ianagos]

Sounds like instead of that controller upgrade you shoulda grabbed a fadal vmc 15 for prob under 8k.

 

[Dbsharp]

Hey buddy, I'm in the process of putting a 5hp baldor vector rated washdown motor on my boss 8. I've got all the design done and have machined most of the metal for it. I'm retaining the low gear and original brake and using a poly v belt. This motor make 5 hp up to 5500. With my pulley ratio I'm getting 2 hp (or higher) over the entire original rpm ranges 500-4200 and 50-500. These blow away the standard bridegport in terms of rigidity. So I think the 5 hp may turn out to be very useful. I'll start out limiting my cuts to 2 hp, but I will experiment using full power available. I'll be keeping a close eye on bearing temp in the spindle. I'll tell you now, there is no way your fitting this motor in the original position. It has to point up. I'll upload my designs to grabcad soon. Be advised I'm not sure if the dowl pins are hand drilled or not my model may not work for you. Their position is a little funky. It took some work but I was able to accurately measure their position on my casting.

 

[DMF_TomB]

some cnc if servo feeding X or Y is under enough load it actually goes slower than programmed feed rate
.
just saying if you program 60ipm is it actually moving 60 inches per minute ??

 

[Dbsharp]

You can kind of get the idea from this photo where I fitted up the first 6 parts.

I'm not saying you should do this, and the other are right if you can accommodate it your probably better off with something bigger with a toolchanger than upgrades on a boss.

 

[Dbsharp]

Got the motor mounted and pulleys on. Few more parts to machine and print and it's done. Its definitely a lot taller now!

 

[Dbsharp]

Model posted to Grabcad for whoever might be interested. Free CAD Designs, Files & 3D Models | The GrabCAD Community Library