Nice Foam cutter! A Peterbuilt-but not wire

[Bloy2004]

check this machine out, built by Peter Leijnen:
http://users.pandora.be/engineering/.../page0003.html
and
http://users.pandora.be/engineering/.../page0001.html

[Bloy2004]

comments made at http://groups.yahoo.com/group/mach1mach2cnc/ in regard to this machine Designed & built by Leijnen Prototyping:

http://users.pandora.be/engineering/.../page0001.html



Wow, Nice Machine. I see why your worried about softlimits. I wouldn't
want that thing mad at me!!

Art
www.artofcnc.ca

============================================================================

Nicely built solid looking machine Peter!
--
Steve Blackmore

[CNCadmin]

I need one of those.

[whiteriver]

Nice,
I thought my machine was big.

Donny

[turmite]

whiteriver your machine is big! it is just short!

This is almost the machine I have drawn for my new build when the cash dribble starts! I even went as far as to design the first drawings with 8X8 tubing which looks like what he used. My table will be much more narrow as I only need about 8-9" either direction of the bit. Length of table looks close to what I will be doing too. I am gonna have to get in touch with guy.

Mike

[whiteriver]

Yeah don't remind me. Shorts not good. If I had the time and money I would air arc off the gantry and add 24" to it then build a longer z. Between lack of time and to scared to mess up my machine it will probley never get done.
But I can still turn 36" dia x 10' long columns on it with my 4th axis.


Donny

[High Seas]

Anyone have a clue on the tool in the spindle? That looks like the ticket for a dremell run at lower speed (or a laminate trimmer)- if you've got the under carriage height.
Do you suppose the collet is custom made to secure a larger tool - or the tool is smaller diameter to fit the collet?
I'd be interested in sourcing one of those!
Cheers - Jim

[turmite]

Highseas the spindle motor is a Perske but if you are speaking about the tool in the spindle I have never seen that type setup before. It looks as though it is an extension with a bit in the end of it.

Mike

ps his url has a closer view too!

[whiteriver]

I asked Peter the same thing. He said its a hardend rod about 1"dia and 14.5" long. Sticks outta the collet about 12.5" And uses standard wood bits. So yeah a big extension.

Donny

[High Seas]

whiteriver - Donny and turmite - Mike
Thanks for all that.
Did Peter say if they were custom built? Do you know if Peter built them himself or has a source. Suppose (looking at his url) that each is "loaded" to its own exetnsion and not able to swap bits?
My search didn't get me any closer to the tool answers - but that Perske as a spindle looks pretty sweet! Do you have any idea what is the collet size on his Perske - I note they run from 1/4 to 3/4 inch - and 240volts. Not much use for the auto-tool changers - I'd be outa that job!

Any help here would be very appreciated - bet others would like to source a long bit (tool) for their application too.
cheers- Jim

[Bloy2004]

from Mach2 forum site:
http://groups.yahoo.com/group/mach1mach2cnc/


From: "pleijnen"
Date: Wed Apr 7, 2004 6:49 pm
Subject: details of my machine...


Since there seems to be a general interest in my machine (thanks
everybody!) I think it's easiest to post some details about its
construction here.
I will be happy to help anyone with more specific questions about it!

So here we go:

The machine's working envelope is 1500 x 1590 x 600 mm.
Max. speed is 200mm/min.
The motors are brushless ac servo's from Control
Techniques, type Unimotor 95SLB200.
They are 12Nm peak, 4Nm continuous.
The drives are M'Ax 406's. These are digital servo drives
which have a step/direction input.
They are a bit overkill for this size machine, but I
anticipated building a larger machine in the future,
and reusing the servo's.
DC servos would be a less expensive option, but not advised for
professional use (12hr/day, several days/week)
The spindle is a Perske 5KW 18.000 RPM router, controlled with a
Control Techniques frequency converter. Max collet capacity is 25mm
(about 1 inch)

The machine has preloaded ballscrews (Bosch-Rexroth)
on all axes, coupled to the servos with a HTD belt and
pulley. The linear ballguides are preloaded too.

The 2 legs are standard square tubes with 8 mm wall
thickness. Also the 2 rails for the table are standard
H-profiles.
The table (1000mm x 1000mm)is a solid, machined aluminium plate 30mm
thick.
All the rest I have TIG-welded from 12mm steel plate.
All parts were cnc laser-cut (from autocad DXF
drawings).
After everything was welded, the large
(horizontal)X-beam, the small(vertical) Z-beam and the
2 H-profiles were heat-treated to remove the stress
from the welding.
After this, flat strips were milled (with a very large
cnc metal milling machine) on the beams and many holes
were drilled and tapped on these parts
to attach the linear ballguides.
All other holes were also cnc drilled and tapped to
ensure correct dimensions.
After this, I painted all the parts with a small
roller brush in an anti-rust paint.
Then I assembled the machine in my parents' garage!

Best regards to all,

Peter L.

[georgebarr]

Where can I get a Perske spindle motor? Can I use a VFD to control the speed or what must I use to control the motor speed?