Commutator Build
Hey Cornboy,
I was going to tell you...in the event that no 36 element commutator is anywhere in the Planet...and the cost to order from scratch is too high...
Ask Your WaterJet Guys...how thick on metal their machine could go.
If they could go around 40-50 mm deep...then we can make the commutator...
I have done it before.
First get all the Brushes and their respective housings...the Motor I am working on uses pretty big size brushes...but there are many places may be closer to you...then get me the brush width (so I could CAD the right size elements)
Second find a nice thick (40 -50 mm thick) block of copper, and around 80X80 mm (ask them at WaterJet how wide besides real size to be cut they need)
The way I do it is to get a Full Ring build from a CAD...with all elements together bonded by a thinner outer structure just to hold them together maintaining exact gaps...They cut it...
Then you have to get the "BAKELITE" (I will provide the sources) is some kind of a sand (phenol formaldehyde) that they use in real heavy duty commutators...it has to be oven at high temperatures...but there is a process to it...first a lower temp will turn it into a kind of plaster/cream to fill ,press and mold it between spaces...then set it at Higher Temperatures.
When it is completely dry and cool, then just need to cut off the outer joint elements and Lathe it...to smooth outer surface and drill a center hole..done deal.
The Source I got this from is HEXION in Germany
Hexion Specialty Chemicals, Inc.
...but now they changed their name to "MOMENTIVE"...kind of Corp deals...
Momentive.com - World Leader in Specialty Chemicals and Materials
I asked for a Sample of it to give it a try...free...and they sent me 1 Kg...enough to make a few commutators...
The Compound Sand-Resin is called BAKELITE PF 13- 889 - P33
PF stands for Phenol Formaldehyde
It is not a simple deal...I know...but just in case
I had to do it this way, since the type of commutator I needed does not exist...and can not be made...so I had to go this method.
Regards
Ufopolitics
Originally posted by Cornboy 555
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I was going to tell you...in the event that no 36 element commutator is anywhere in the Planet...and the cost to order from scratch is too high...
Ask Your WaterJet Guys...how thick on metal their machine could go.
If they could go around 40-50 mm deep...then we can make the commutator...
I have done it before.
First get all the Brushes and their respective housings...the Motor I am working on uses pretty big size brushes...but there are many places may be closer to you...then get me the brush width (so I could CAD the right size elements)
Second find a nice thick (40 -50 mm thick) block of copper, and around 80X80 mm (ask them at WaterJet how wide besides real size to be cut they need)
The way I do it is to get a Full Ring build from a CAD...with all elements together bonded by a thinner outer structure just to hold them together maintaining exact gaps...They cut it...
Then you have to get the "BAKELITE" (I will provide the sources) is some kind of a sand (phenol formaldehyde) that they use in real heavy duty commutators...it has to be oven at high temperatures...but there is a process to it...first a lower temp will turn it into a kind of plaster/cream to fill ,press and mold it between spaces...then set it at Higher Temperatures.
When it is completely dry and cool, then just need to cut off the outer joint elements and Lathe it...to smooth outer surface and drill a center hole..done deal.
The Source I got this from is HEXION in Germany
Hexion Specialty Chemicals, Inc.
...but now they changed their name to "MOMENTIVE"...kind of Corp deals...
Momentive.com - World Leader in Specialty Chemicals and Materials
I asked for a Sample of it to give it a try...free...and they sent me 1 Kg...enough to make a few commutators...
The Compound Sand-Resin is called BAKELITE PF 13- 889 - P33
PF stands for Phenol Formaldehyde
It is not a simple deal...I know...but just in case
I had to do it this way, since the type of commutator I needed does not exist...and can not be made...so I had to go this method.
Regards
Ufopolitics
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