[Lab] ideas for small spindle for small cnc

Wed Feb 9 22:13:25 EST 2011

That freedom one helped me get the vocabulary to search google properly.

http://www.cmlsupply.com/drilling-tools/drill-chucks-pin-vises/mini-drill-chuck-1-8-shank-for-dremel-micro-drill-bits.html

On Wed, Feb 9, 2011 at 10:06 PM, Darcy Whyte <darcy at siteware.com> wrote:

> That freedom link looks like a great 1/8th chuck. 16.00 bucks. I went to
> grab one but they wanted 20.00 for shipping and handling for an item that
> fits in an envelope. I'll check back again later to see if there is a
> minimum order or something that's happening there.
>
>
>
> On Wed, Feb 9, 2011 at 9:54 PM, Andrew Plumb <andrew at plumb.org> wrote:
>
>> Busy Bee Tools may have something:
>> http://www.busybeetools.com/categories/Hand-Tools/Chucks/Drill-Chucks/
>>
>> Foredom carries some micro chucks that might work:
>> http://www.foredom.net/colletadpatersmicrochucks.aspx
>>
>> Lee Valley Tools has started carrying some of the Foredom line, so they
>> may be able to order one in for you.
>>
>>
>> Andrew.
>> <http://www.busybeetools.com/categories/Hand-Tools/Chucks/Drill-Chucks/>
>> On 2011-02-09, at 8:50 PM, Darcy Whyte wrote:
>>
>> I suspect that standard drill chuck is much too large to mount small
>> endmills like 1/64 or 1/32 and turn them at 20,000 rpm. There has to be
>> something more the size of a dremel chuck out there. Ideally I think direct
>> drive is the way to go and a belt if I can only find a chuck with a shaft.
>>
>>
>>
>> On Wed, Feb 9, 2011 at 8:48 PM, Paul (Maker Engineering) <
>> paul at makerengineering.com> wrote:
>>
>>> Oh and not sure about that one in particular but most drill press chucks
>>> are friction fit. (very slightly tapered hole and you pound it on)
>>>  On 2011-02-09 8:31 PM, "Richard Guy Briggs" <rgb at tricolour.net> wrote:
>>> > On Wed, Feb 09, 2011 at 07:38:42PM -0500, Paul (Maker Engineering)
>>> wrote:
>>> >> Something like this:
>>> >>
>>> http://www.canadiantire.ca/AST/browse/6/Tools/PowerToolAccessories/Chucks/PRD~0545561P/Mastercraft%252B3%25252B8-in.%252BChuck%252BWith%252BKey.jsp?locale=en
>>> >>
>>> >> <
>>> http://www.canadiantire.ca/AST/browse/6/Tools/PowerToolAccessories/Chucks/PRD~0545561P/Mastercraft%252B3%25252B8-in.%252BChuck%252BWith%252BKey.jsp?locale=en
>>> >probably
>>> >> designed to fit on a standard shaft (like 8mm, or 6mm rod cut to
>>> length,
>>> >> maybe turned down a bit).
>>> >
>>> > How does it attach to the shaft?
>>> >
>>> >> Mount a pulley on that, to drive it by belt
>>> >>
>>> >> Then drive it with one of these:
>>> >>
>>> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8480
>>> >>
>>> >> <
>>> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=8480
>>> >Capable
>>> >> of 40,000 RPM at 12V, and at max power (which you would have a hard
>>> time
>>> >> sourcing the amps for), it can put out half a horsepower (in it's
>>> optimal
>>> >> power band).
>>> >
>>> > Holy crap! that's barely larger than a cubic inch!
>>> >
>>> >> Power the motor with something like one of these guys:
>>> >>
>>> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9299
>>> >>
>>> >> <
>>> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9299
>>> >with
>>> >> a small fan on it (or hell mount a fan on the shaft of the motor
>>> before the
>>> >> pulley and use the backwash to cool the motor and the ESC). Feed it
>>> direct
>>> >> 12V from your PSU, and feed it a pwm servo signal to accurately
>>> control
>>> >> speed of the spindle.
>>> >
>>> > A PC AT or ATX power supply modded should be easily able to supply
>>> that.
>>> >
>>> >> Simple, effective, and affordable. :)
>>> >>
>>> >> - Paul
>>> >>
>>> >> On Wed, Feb 9, 2011 at 6:51 PM, Darcy Whyte <darcy at siteware.com>
>>> wrote:
>>> >>
>>> >> >
>>> >> > Great idea.
>>> >> >
>>> >> > I could run the spindle chuck from a belt or I could try and find a
>>> chuck
>>> >> > that could mount on the shaft. Nothing shows up in ebay but I don't
>>> know
>>> >> > what to search for. I'll keep fishing around...
>>> >> >
>>> >> > Darcy
>>> >> >
>>> >> >
>>> >> > On Wed, Feb 9, 2011 at 6:21 PM, Paul (Maker Engineering) <
>>> >> > paul at makerengineering.com> wrote:
>>> >> >
>>> >> >> I would say get a shaft that fits a stock chuck (drill press chuck
>>> for
>>> >> >> example)
>>> >> >>
>>> >> >> Mount a pulley drive on it, and drive it from an RC Brushless DC
>>> Motor,
>>> >> >> with an RC Speed controller. You can send it simple servo signals
>>> (pwm) to
>>> >> >> control the speed accurately and easily, and the whole thing would
>>> be quite
>>> >> >> high torque, and fairly cheap. And no fancy electronics to power
>>> the motor,
>>> >> >> just feed it raw 12VDC from your main PSU.
>>> >> >>
>>> >> >> - Paul
>>> >> >>
>>> >> >> On Wed, Feb 9, 2011 at 6:15 PM, Darcy Whyte <darcy at siteware.com>
>>> wrote:
>>> >> >>
>>> >> >>> Hi,
>>> >> >>>
>>> >> >>> I want to make a couple small CNC mills for fun. I decided the
>>> Mantis is
>>> >> >>> too small so I am doing other designs. I want to use it for
>>> cutting balsa
>>> >> >>> wood and the other for more general purpose.
>>> >> >>>
>>> >> >>> I am looking for ideas for the spindle for cutting balsa wood. I
>>> think if
>>> >> >>> it had an 1/8th chuck so I could use my 1/64th end mill that would
>>> be cool.
>>> >> >>>
>>> >> >>> Any ideas what to use for the spindle??
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
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>>> >> >>
>>> >> >
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>>> > slainte mhath, RGB
>>> >
>>> > --
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>>> > <www.TriColour.net> -- \___ o \@ @ Ride yer bike!
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>>
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