The Bucking Magnet Motor

z.monkey · March 06, 2011, 08:12:48 AM

Howdy tbird,

I see what you mean about the "L" brackets. The variable cants would really help development. I am going to leave the corners on the new plate set, and move the driver ring mounting points to the corners. So, we can add a cant adjustment to those last four magnets on the driver ring...

I'm working on a drawing now...

tbird · March 06, 2011, 09:31:34 AM

this is my version of a "tbird".

tom

z.monkey · March 06, 2011, 10:23:47 AM

That looks a lot more fun than mine...

z.monkey · March 07, 2011, 12:21:57 PM

Quote from: z.monkey on March 05, 2011, 09:06:09 AMSo, I am thinking the balance reference for the cants is 0 degrees, directly facing each other, so there is no vector of movement. A slight tilt would be 5 to 10 degrees (not 45)

Where is Neutral?

I forget that we're dealing with a circular object here. Neutral is not perpendicular to the vertical axis through the center of the stator disk. I did some doodling to see what is going on here. If I adjust the cant to what I was thinking was the Neutral position, it is actually canted in the wrong direction (negative cant). Were dealing with a radius so the neutral position has to be parallel with the radius. So I measured what angle I needed to make the magnet sit flat on the radius, and that is about 7 degrees. This means that my angles on the first UABMM are around 38 degrees and not 45 degrees, it is off set from the Neutral Position, and not relative to the vertical axis through the center of the stator disk...

I am experimenting with cant angles for the new UABMM2. I will also probably be changing the magnet spacing and the number of magnets. The first experiment threw a whole bunch of new variables into the equation. Before I draw UABMM2, I need to get all these new variables worked into the puzzle...

The Neutral position of the magnets is relative to the radius of the stator. The larger the radius of the stator the smaller the Neutral Position offset, and the smaller the radius of the stator the larger the Neutral Position offset...

z.monkey · March 08, 2011, 04:49:07 PM

OK,

Made the drawing, got a couple more motor plates on order...

Also ordered the Palmgren Milling Table. I got a deal on it too. I've kinda been waiting on the right incentive. So, today MSC sent me a 30% web coupon for orders over $199. Just what I've been waiting for. The Milling table was $315, and I get 30% off, so I paid $220, awesomes... The best American table for about the price of the import...

I'm ready to mark up a plate, and get back to shredding metal...