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 Post subject: Bob's new machine?
PostPosted: Wed Nov 28, 2012 10:24 am 
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Cocobolo
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Joined: Mon Mar 03, 2008 6:51 pm
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Bob, any details you can share on your new machine? It sounds like you're hacking on an industrial scale.


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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 4:38 pm 
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Brazilian Rosewood
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Sorry for the late reply, I've been up to my neck in meetings and pitches all week. Who knew that founding a start-up is a lot of work?

The details thus far are as follows:

The 'base' machine is a Standard Router 44-3125...pretty much the same as this : http://www.centroidcnc.com/cnc_router.htm except mine came with a two-zone solid aluminum vacuum table and three (3!) 18K ER32 spindles. It's a 48x48 working area with an 8" Z stock. I bought mine used and in working order from a shop in Rhode island

The control is going to be replaced with a Dynomotion KFLOP pretty much as soon as I can power it up. The control cabinet is better documented and much less proprietary than the Fadal was, so I expect the control retro to take one or two days tops.

The X and Y axis motors / ballscrews are going to be replaced with two 1000N peak Hiwin linear motors I picked up on eBay for a steal. No screws so no lead screw error or backlash, and both the motor coil and the load are reading off the same linear encoder. Silly acceleration and feeds possible, and I'm much too afraid to ever come close to maxing those out. Excited about the contouring accuracy.

I was planning on putting an ATC on at the start, but I spent my ATC budget on the linear motors so that'll have to wait 'til sometime next year.

I'll be replacing most of the Z axis: new C2 or better ballscrew, boosting up the whole axis to get at least 15" of Z, and probably adding some mass for damping. The linear motor will shove around a 400 lb Z carriage at the speeds I need, so there's lots of room to add mass.

Right now I'm waiting for the power company to hook up my 3-phase (only been back and forth with them for the last three months)...word is that it'll happen within a couple weeks. Which is, of course, exactly when I'll be leaving for the holidays and unable to work on the machine. When I get back in January I'll be going at it with a vengeance, or at least as much vengeance as I can spare after my duties to the new company are met. Spending most of my days right now with my two partners doing the 'Dragons Den' (or Shark Tank, if you prefer) thing talking to investors. Lots of upside, but hard on the head.

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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 5:12 pm 
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Bob Garrish wrote:
Sorry for the late reply, I've been up to my neck in meetings and pitches all week. Who knew that founding a start-up is a lot of work?

The details thus far are as follows:

The 'base' machine is a Standard Router 44-3125...pretty much the same as this : http://www.centroidcnc.com/cnc_router.htm except mine came with a two-zone solid aluminum vacuum table and three (3!) 18K ER32 spindles. It's a 48x48 working area with an 8" Z stock. I bought mine used and in working order from a shop in
Rhode Island


You mean there was one of these machines in my neighborhood and I didn't know about it? You should have stopped in to say hi when you were down here at least!

Looks Awesome. Those linear motors are incredible.

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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 5:31 pm 
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Joined: Thu Jun 12, 2008 6:59 am
Posts: 1904
Location: Rochester Michigan
5G acceleration Image

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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 5:40 pm 
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Hey Bob,

Regarding the Kmotion software - does it include a backplot type of feature?

Although I have no intention of switching from Mach3 any time soon, I'm also not a big fan of Mach3. It does however have two features that I'm quite addicted to, one of which is the back plot that also shows the tool's current position. For me anyway, it's a very easy way to make sure that my clamps and so forth are out of the way when doing one off type of parts.

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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 7:12 pm 
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Koa
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Location: Crownsville, MD
First name: Trevor
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Zip/Postal Code: 21032
Country: USA
Focus: Build
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What type of business are you starting up? Good luck with whatever it is...!!!

Trev

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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 8:42 pm 
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Cocobolo
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Joined: Mon Mar 03, 2008 6:51 pm
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Wow, crazy stuff!


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 Post subject: Re: Bob's new machine?
PostPosted: Sun Dec 02, 2012 9:00 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Tue May 02, 2006 9:02 am
Posts: 2346
Location: Canada
First name: Bob
Last Name: Garrish
City: Halifax
State: Nova Scotia
Country: Canada
Focus: Build
Status: Professional
Andy Birko wrote:
Hey Bob,

Regarding the Kmotion software - does it include a backplot type of feature?


Certainly does:
http://www.dynomotion.com/Help/KMotionCNC/GCodeViewerScreen.htm

Andy Birko wrote:
5G acceleration


Only 0.5G with a 450lb table / Z axis, but it'll do! I'm capping the top speed, as there's nothing stopping a runaway table after 4' at those accels. Tuning them is going to be terrifying.

Don Williams wrote:
You mean there was one of these machines in my neighborhood and I didn't know about it? You should have stopped in to say hi when you were down here at least!


Wouldn't have missed the chance: I got it trucked in.

Parser wrote:
What type of business are you starting up? Good luck with whatever it is...!!!

Trev


We're developing a performance enhancing tech for the athletic bracing market. It went from an idea in September to five investor meetings this coming week...it's enough to give you whiplash.

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Bob Garrish
Former Canonized Purveyor of Fine CNC Luthier Services


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 Post subject: Re: Bob's new machine?
PostPosted: Fri Dec 07, 2012 6:28 pm 
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Mahogany
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Joined: Mon Aug 20, 2007 2:25 pm
Posts: 52
Location: United States
That will be an amazing machine Bob!

Those linear motors are crazy! http://www.youtube.com/watch?v=BhcZBr38Kmc
And the comments for that video are pretty funny.

Looking forward to developments


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