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Author Topic: Switchable Magnets.  (Read 52540 times)

synchro1

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Re: Switchable Magnets.
« Reply #30 on: May 09, 2015, 02:45:30 AM »
One would construct a device by linking *two* opposite magnetic polarity blocks back to back
with counter rotating  handles. It makes me think that "hydraulics" would be the energy extractor.
like a motorcycle handbrake. A small distance but powerful mechanical movement.

A proof of concept device would be... "one stage activates next stage".. plus an inverter.. around a time delay loop.

..S..MarkSCoffman

Running one single rod down from the side of a rocker arm to drive a pump piston that pressurizes a reservoir tank is the finished product as mscoffman envisioned. The greater the holding power of the "Magnet Base", the larger the diameter of the pump piston and the greater the hydraulic P.S.I. per switch sequence. The "Flux De-Coupler" is the magic behind the enormous gain in pressure per switch flop.

Pirate88179

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Re: Switchable Magnets.
« Reply #31 on: May 09, 2015, 03:03:29 AM »
Running one single rod down from the side of a rocker arm to drive a pump piston that pressurizes a reservoir tank is the finished product as mscoffman envisioned. The greater the holding power of the "Magnet Base", the larger the diameter of the pump piston and the greater the hydraulic P.S.I. per switch sequence. The "Flux De-Coupler" is the magic behind the enormous gain in pressure per switch flop.

If you are not familiar with the magnetic chuck designs....permanent mags...it is so simple it will make you laugh.  It is basically a metal basin in which sit
the magnets.  There is room on one end for movement.  The top plate is a combination of steel and brass in very thin layers horizontally positioned so that when the magnets underneath more to the right 1", the layers of permanent mags now all line up with the brass lines in the top.  Move the handle, and the mags move back about 1", and now all line up with the steel layers.  The handle to move the mags is usually about 1 foot long and does take some effort.  The handle moves about 180 degrees so when coupled with the cam mechanism inside the box moves the mag about 1".  It is genius really.

In a typical 8 x 18 inch chuck, the holding power is incredible.  I never thought about comparing it to the force required to switch on and off but, I can assure you that the holding power would be measured in many, many hundreds of pounds.  Just guessing here but maybe even close to 1,000 pounds, and that is a pretty small chuck.  Of course, the surface is machined perfectly flat and if the mating surface is also machined, then it would be interesting to see just how much force it would take to break that bond.

I am not sure how one could use all of that holding power to move the switch on and off but...it is an interesting line of thinking that i have never considered before.

Bill

synchro1

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Re: Switchable Magnets.
« Reply #32 on: May 09, 2015, 09:04:56 AM »
If you are not familiar with the magnetic chuck designs....permanent mags...it is so simple it will make you laugh.  It is basically a metal basin in which sit
the magnets.  There is room on one end for movement.  The top plate is a combination of steel and brass in very thin layers horizontally positioned so that when the magnets underneath more to the right 1", the layers of permanent mags now all line up with the brass lines in the top.  Move the handle, and the mags move back about 1", and now all line up with the steel layers.  The handle to move the mags is usually about 1 foot long and does take some effort.  The handle moves about 180 degrees so when coupled with the cam mechanism inside the box moves the mag about 1".  It is genius really.

In a typical 8 x 18 inch chuck, the holding power is incredible.  I never thought about comparing it to the force required to switch on and off but, I can assure you that the holding power would be measured in many, many hundreds of pounds.  Just guessing here but maybe even close to 1,000 pounds, and that is a pretty small chuck.  Of course, the surface is machined perfectly flat and if the mating surface is also machined, then it would be interesting to see just how much force it would take to break that bond.

I am not sure how one could use all of that holding power to move the switch on and off but...it is an interesting line of thinking that i have never considered before.

Bill

@Pirate88179,

A rod would attach to one side of the rocker arm and drive a hydraulic pressure piston. Six "Noga" 0039'S in tandem, three face to face would deliver 1800 pounds of force to the piston, 900 down and 900 back off each side to pressurize the reservoir head. The six throw switches would couple to a small two way hydraulic cylinder that used merely around 5 P.S.I. The remainder of the reservoir pressure could power an alternator with another larger hydraulic cylinder. "Compressed Air" may work even better.

The monster would sit there and not only run itself, but generate electrical power to perhaps run an electrical airplane or car.
« Last Edit: May 09, 2015, 11:19:21 AM by synchro1 »

ACG

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Re: Switchable Magnets.
« Reply #33 on: May 10, 2015, 06:00:01 PM »
I thought that even the cavemen understood gearing ratio.  Apparently some Neanderthals have survived.

synchro1

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Re: Switchable Magnets.
« Reply #34 on: May 10, 2015, 06:22:44 PM »
I received the definitive email response  form "Noga's Engineers":

"The switch on position activating the magnet force of the magnet and not the holding force of the arms".

Noga's Magnet Switch has a patented "Flux De-Coupler", so the ratio between switching and holding force is "Non-Proportional". This ascending power in holding force for a fixed switch force is the threshold of "Overunity".



 

synchro1

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Re: Switchable Magnets.
« Reply #35 on: May 10, 2015, 06:28:59 PM »
I thought that even the cavemen understood gearing ratio.  Apparently some Neanderthals have survived.

@ACG,

A lever would help too.

Pirate88179

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Re: Switchable Magnets.
« Reply #36 on: May 10, 2015, 07:53:02 PM »
I thought that even the cavemen understood gearing ratio.  Apparently some Neanderthals have survived.

Gearing does not amplify energy, it wastes it as heat due to friction.  That would simply add another loss to the system.

Bill

synchro1

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Re: Switchable Magnets.
« Reply #37 on: May 10, 2015, 09:44:41 PM »
Doubling the magnetic force in an Electro-Magnet requires raising the input by a factor of two. Doubling the holding force of a "Magnet Switch" is practically free from the "Flux De-Coupler" advantage.

A practical approach towards motorizing the" Magnetic Holding Force" of these kinds of switches has been slow developing and is currently a "Horse and Buggy" era mechanism.
« Last Edit: May 11, 2015, 02:04:01 AM by synchro1 »

synchro1

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Re: Switchable Magnets.
« Reply #38 on: May 11, 2015, 08:30:07 PM »
Here's a high pressure low stroke neumatic reciprocating pump. The pump rod would hook directly to the "Rocker Arm".

synchro1

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Re: Switchable Magnets.
« Reply #39 on: May 13, 2015, 01:38:19 AM »
Here's another email response I got about the "Noga 0039" with 283 pounds of holding force at "Amazon":

The question was: Does the switch require more force with increased holding force?

Answer from Kevin:

"No the switch turns on off the same as the smaller size"

NOGA Magnetic Holder Bed - Model: DG0039

Another answer to the same question from Selecio:

"All the same". 

Pirate88179

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Re: Switchable Magnets.
« Reply #40 on: May 13, 2015, 02:40:10 AM »
Here's another email response I got about the "Noga 0039" with 283 pounds of holding force at "Amazon":

The question was: Does the switch require more force with increased holding force?

Answer from Kevin:

"No the switch turns on off the same as the smaller size"

NOGA Magnetic Holder Bed - Model: DG0039

Another answer to the same question from Selecio:

"All the same". 

That is a photo of a magnetic base dial indicator holder...we had about 30 of those.

For their size and holding power, those are very hard to turn on/off.  But, you are right that you could add a lever as long as you wanted and more more distance with less effort.

The magnetic chucks I spoke of earlier, already have about a 12" long handle which could be made longer.  Even a small magnetic chuck would have many, many times the holding power of the device you posted a photo of above.

Bill

synchro1

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Re: Switchable Magnets.
« Reply #41 on: May 13, 2015, 07:32:50 AM »
@Pirate88179,

Here's a picture of a "Magnet Chuck". What's the purpose of the "Allen Wrench" pictured along side it? It says "On" right above it. You're right, it appears many times stronger then the "Magnetic Base". Two of these Chucks should work the same way joined at the Allen Wrench, but deliver thousands of pounds in pull force to the "Rocker Arm" attracting plates.

The one on the bottom has a larger throw handle:

synchro1

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Re: Switchable Magnets.
« Reply #42 on: May 13, 2015, 08:11:11 AM »
Below is a "Radial Electro-Powered Permanent Magnet Chuck" and it's motor controller.

synchro1

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Re: Switchable Magnets.
« Reply #43 on: May 13, 2015, 07:59:48 PM »
Two of these "Radial Electro-Powered Permanent Magnet Chucks" could power  a "Rocker arm" reciprocation pump with two steel holding plates. Chances are this set-up is already overunity with the thousands of pounds of holding force for the tiny amount of switching power. The bottom part comes complete off the shelf. Thanks to "Pirate88179" for this information.

mscoffman

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Re: Switchable Magnets.
« Reply #44 on: May 13, 2015, 08:18:49 PM »
 syncro1,
 
My computer is having keyboard problems, I wanted to get back quicker then is happening.
 
I have decided that mechanical methods using an N52 flapper magnetic may
be simpler to design and implement then hydraulic means.
 
(o) Take an N52 magnet in the "Radio Shack" form factor but magnetized it across it's second
longest side. Now mount it on a shaft positioned 2/3 the way on its smallest area face drilled through to
the other. This is a flapper magnet.
 
(o) Now remove the knobs and mount one-to-one gearing on the input shafts. Turn the
gears to right and the right unit's face turns on(n/s), turn the gears to the left and the left
(n/s) unit's face turns on, mount the above flapper magnet such that the flapper will follow the left
right face action.
 
(o) Now do gearing reduction such the D-input D-output require the same actuation distance. It may take multiple
shaft reductions to get them the same. Hopefully the output side still retains the greatest torque afterwards.
 
(o) Link (3) units together in a loop with linkages then stand back.
 
This should be calculation verifiable when torques (in in-lbs) are given in the specs.
Hydraulics are nice for accumulators, but you want to get rid of Rober Val (scale like, parallel) force linkages.
 
 
..S..MarkSCoffman