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the Bear CNC shaper

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waxux
Posted: Wed Sep 02, 2009 11:26 pm Reply with quote
Joined: 16 Nov 2003 Posts: 142 Location: Outer Banks NC
Outfitting the drive systems is complete!!!!!!!

Profiler One is fully assembled (excluding the vacuum table) with table surface blank loaded and ready to cut.




























The carriage top and fill strip behind the gear rack for the Y axis need painted black yet. And the vacuum table surface has to be milled and assembled which will be the first cutting test the machine will perform.

The next few days I'll be getting the computer station in order wiring the unit to the controller installing limit switches and motion testing the machine. The video portion of this thread should be coming soon.

Hope ya'll dig it. I know I do

Mike
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Lincolnz
Posted: Thu Sep 03, 2009 2:31 am Reply with quote
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Joined: 05 Jun 2005 Posts: 11215
Can't wait to see it run!

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mosu101
Posted: Thu Sep 03, 2009 5:25 am Reply with quote
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Joined: 08 Aug 2006 Posts: 5086 Location: Australia
cant wait for someone to explain to me what it does

Ive managed to comprehend that its a lathe with a wide range of travel but do you make decks with this? will this cut a blank into a finished shape?

Pardon my ignorance on this but can someone explain what this does with an example

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yoyo
Posted: Thu Sep 03, 2009 3:48 pm Reply with quote
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Joined: 27 Apr 2005 Posts: 2228 Location: Germany
It looks truly great and really PROFESSIONAL!

Routing decks, making molds would be my guess.
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steve-g
Posted: Sun Sep 06, 2009 4:23 am Reply with quote
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Joined: 17 Jul 2003 Posts: 7292 Location: UK.
Looks good. I worked as a CNC programmer for a while.

In the early photos there's a hand crank on the Z axis; is the machine CNC controlled only in X-Y or all three?

What's the hardest material you think it can cut? Is it designed purely for milling / routing composite / wood materials or could it machine metals?
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waxux
Posted: Sun Sep 06, 2009 8:19 am Reply with quote
Joined: 16 Nov 2003 Posts: 142 Location: Outer Banks NC
The original Z carriage was tight and difficult to operate simply by hand. I had put the crank handle on for extra leverage to test the motion of the mechanism. The new Z carriage is alot mre fluid (but I still used the handle to test it) the handle has been replaced with its own servo/stepper. ( see new pics)

This was designed specically to cut wood and plastics for board building however cutting aluminum is one of the tests I will be conducting soon. Hope to have videos in a week.

The machine is complete and ready to test except my computer is not. All it has are USB ports even with adaptor cables the controller will not recognize the USB ports so I ordered a PCI card with a DB25 parallel port last night. Bummer I really had wanted to make it move this weekend.

mosu 101 this machine is for cutting shapes in multiple decks at one time, routing new molds, shaping and profile thicknessing ski and snowboard cores, die cutting plastic for ski and snowboard bases. Pretty much anything with a router would do that is usually done by hand and with jigs.

Currently I cut my decks with a band saw, and use a belt/disc sander to fine tune the shape. At my fastest productioon run (last summer) I was managing one deck ready to spray (from uncut blank) every 8-10 minuets. This machine will accept 2 or 3 in a stack for up to 6 at a time and can be accurately cut for shape in less than 4 minuets. It eliminates the need for the bandsaw and belt/disc sander will even drill the truck holes precicely reducing the overall shaping time from 8 minuets each to approximately 3 minuets each on average.

Mike
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yoyo
Posted: Mon Sep 07, 2009 2:05 pm Reply with quote
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Joined: 27 Apr 2005 Posts: 2228 Location: Germany
Thanks for the update MIke!
It's really amazing to see what you are creating here.
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pennswood
Posted: Tue Sep 08, 2009 8:45 am Reply with quote
Joined: 14 Sep 2003 Posts: 213
cutting more than 1 uncut in a stack is very difficult,
even with a 10 hp spindle router.

hard maple is very tough on bits.
we tried cutting the whole stack of 4 boards that we press.
the thickness is about 1.5 inches. to cut that much maple
we ran it at 10 inches per minute.
it really is too much. you need a really long bit,
with at least the 2 inch flute length.

you need to use a pretty big bit size,
or you'll start breaking bits.
1/4 inch are just too weak,
especially at that length.

we started with 1/2 inch bits,
but had moved down to 3/8 a year back.

2 flute spiral bits are the best cutting.

that put alot of stress on the bit.
after just a few stacks the bit looses much of its sharpness.

i suggest cutting only 1 board at a time,
then you can run at 60-100 inches per minute.

the machine looks great.
our latest is mounting 2 routers in tandem, 2 Z axis
so we will be cutting 2 boards at the same time side by side.
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waxux
Posted: Fri Sep 18, 2009 10:00 pm Reply with quote
Joined: 16 Nov 2003 Posts: 142 Location: Outer Banks NC
here are a couple of motion test videos. They're poor
quality but you cna make it out.

More coming soon.

MC





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waxux
Posted: Sat Oct 10, 2009 9:55 pm Reply with quote
Joined: 16 Nov 2003 Posts: 142 Location: Outer Banks NC
Here are a couple of videos of the thing running. Had to re-work the X axis assembly it was prone to getting dust and chips in the gear racks.

You may go to YouTube to view the video by clicking below...
YouTube Video



You may go to YouTube to view the video by clicking below...
YouTube Video




The machine is tracing a cut it made the other day prior to fixing the dust problem in the X axis. It is moving at 150 inches per minute.

MC
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