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Posted by rpseguin on April 24, 2008, 3:41 am
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I bought a number of BT40 Lyndex shrink fit endmill holders, but
cannot even come close to affording the shrink fit induction heating
system to operate them.
I'd like to use the holders, as they are really nice and well
balanced.
Soooo.... I was thinking of buying a $100 induction cooker and taking
it apart and reworking the coils to go around the endmill portion of
the holder.
It doesn't take a whole lot of heat to get the holder to open up
enough to take an endmill. I did an experiment where I used an
electric range cooktop and heated a 5/8" shrink fit endmill holder up
and then inserted a 5/8" carbide endmill. 30 seconds later, it had
really gripped it quite hard.
Opinions and ideas?
Anybody know if the coils in an induction cooker are flexible and can
be reshaped easily?
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Posted by Winston on April 24, 2008, 4:00 am
Please log in for more thread options rpseguin wrote:
> I bought a number of BT40 Lyndex shrink fit endmill holders, but
> cannot even come close to affording the shrink fit induction heating
> system to operate them.
Sayyy you may be on to something there.
http://en.wikipedia.org/wiki/Image:Induction_Cooker.jpg
The red dealie in the center of the (silicone?) pad is probably a
temperature sensor allowing closed-loop operation. So you would
want to incorporate it into whatever modification you plan.
Be careful to match the impedance of your inductor to that of the
spiral - wound unit shown.
--Winston
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Posted by Bipolar Bear on April 28, 2008, 3:17 am
Please log in for more thread options
> I bought a number of BT40 Lyndex shrink fit endmill holders, but
> cannot even come close to affording the shrink fit induction heating
> system to operate them.
> I'd like to use the holders, as they are really nice and well
> balanced.
>
> Soooo.... I was thinking of buying a $100 induction cooker and taking
> it apart and reworking the coils to go around the endmill portion of
> the holder.
>
> It doesn't take a whole lot of heat to get the holder to open up
> enough to take an endmill. I did an experiment where I used an
> electric range cooktop and heated a 5/8" shrink fit endmill holder up
> and then inserted a 5/8" carbide endmill. 30 seconds later, it had
> really gripped it quite hard.
> Opinions and ideas?
>
> Anybody know if the coils in an induction cooker are flexible and can
> be reshaped easily?
>
I would probly adapt an ac welder..wind up some copper tubing and pump
cooling fluid through it.
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Posted by spaco on April 28, 2008, 11:20 am
Please log in for more thread options What is an "induction cooker" and where can you buy one for $100?
Recently, the guy at the auto repair shop I go to showed me a little
induction heater that has a heating coil on the end of screwdriver-like
handle. You lay the coil over a siezed-up nut, pull the trigger, the
nut turns red and you take it off. Car doesn't catch fire, knuckles
aren't bruised, etc.. I have no idea how much the thing cost, but it
wouldn't be too hard to find out.
In general, induction heating devices that I have seen aren't all that
cheap. So, if you do have access to that $100 device, I'd sure like to
know where I could get one.
Pete Stanaitis
---------------
rpseguin wrote:
> I bought a number of BT40 Lyndex shrink fit endmill holders, but
> cannot even come close to affording the shrink fit induction heating
> system to operate them.
> I'd like to use the holders, as they are really nice and well
> balanced.
>
> Soooo.... I was thinking of buying a $100 induction cooker and taking
> it apart and reworking the coils to go around the endmill portion of
> the holder.
>
> It doesn't take a whole lot of heat to get the holder to open up
> enough to take an endmill. I did an experiment where I used an
> electric range cooktop and heated a 5/8" shrink fit endmill holder up
> and then inserted a 5/8" carbide endmill. 30 seconds later, it had
> really gripped it quite hard.
> Opinions and ideas?
>
> Anybody know if the coils in an induction cooker are flexible and can
> be reshaped easily?
>
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Posted by aarcuda69062 on April 28, 2008, 4:07 pm
Please log in for more thread options
> What is an "induction cooker" and where can you buy one for $100?
>
> Recently, the guy at the auto repair shop I go to showed me a little
> induction heater that has a heating coil on the end of screwdriver-like
> handle. You lay the coil over a siezed-up nut, pull the trigger, the
> nut turns red and you take it off. Car doesn't catch fire, knuckles
> aren't bruised, etc.. I have no idea how much the thing cost, but it
> wouldn't be too hard to find out.
http://www.theinductor.com/index.php?m=5&s=0&ds=0&prod=11
Scroll down to the MD600
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> cannot even come close to affording the shrink fit induction heating
> system to operate them.