 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Windmills : CNC Machined Turbine
  Page 2 of 2 |
|||||
| Author | Message | ||||
Madness Guru  Joined: 08/10/2011 Location: AustraliaPosts: 2498 |
That a serious Lathe, how difficult is it to go from a cad drawing to a finished item. With your gear could you machine wind turbine blades, in particular the type that have a twisted pitch. There are only 10 types of people in the world: those who understand binary, and those who don't. |
||||
mroy0404 Newbie  Joined: 05/03/2013 Location: CanadaPosts: 14 |
This would require a 5 Axis Mill, I dont have one of them yet. I figure the blades would weigh to much if machined from solid aluminum. To make a part from a CAD file is simple, thats how I program my CNC machines now. I create a CAD drawing then draw a tool path around the part. Then create the G code from this. Then transfer the G code to the CNC control. |
||||
Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
I think the beer was used as a lubricant, just not sure if its for the CNC or the operator. Certainly a nice big boy toy you have, if you were down the road, i would be happy to sit, drink beer and watch the machine work myself. You asked about AXFX (axial flux) mill, they are probably the best for efficiency, but dont know if i would go that way just yet if i was you. AXFX mills have a habit of burning out if everything is not perfect, others might disagree, but there is a long history of failures with AXFX mills. Also the magnet cost is very high now days, and what once costed $400.00 for magnets can now cost $2000.00 to $4000.00 for the magnets alone. As for the OEM alternators they are an iron core alternator like you have at present, and cost wise i think they are one of the better on the market for Kw return. I will discuss them further with you off forum so not to derail this thread. As for doing a combined mill design on forum, i doubt that will work and has been tried before and just becomes a mess if it even ever gets started. Many of the real windmill guru's that once was on the forum have now left, but not to say there is not still some smart people still on the forum. ( me... im just the box the guru's were once shipped in compared to some past members knowledge) To me the output of your current mill is a little poor, but that is more to do with the alternator and blades used, its a pity really when considering the high quality of the rest of the build you have done. Most of us have less than perfect wind conditions, and your mill would make 2/5 of stuff all in my wind conditions, so hence my above comment (dont take my bluntness personal) Pete. Sometimes it just works |
||||
fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Mike , Very nice work , I drooled over it all when you posted it all on Field Lines HERE last year , we seem to be a little behind down under . Here's a link to my latest AX 320 if you would like to look , a bit more along the manual build lines but the controlls are a bit more high tec. It is punching out 1.4kW in 24 klm and the other day hit over 4.2kW . Axials are the way to go but , there is a fine line between power/ heat and then burn out , in my next build I will be doing variable pitch as well and it will be a 4mt machine . Again , nice work but its way out of most people here's league . PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
||||
| Midwoud1 Newbie Joined: 25/12/2012 Location: NetherlandsPosts: 23 |
Hi Mike. Hi class.Do you have already an idea to make your pitch controlled blades? I have my windmill with active pitched blades and it's working very good. An Axial Flux generator is the best way to go. With the info of Hugh Piggott and the Dan's ( generator ,blades size ) the best result. Neo magnets and copper wire are not too expensive. The electronics are not too complex. There is no overspeed and burned-out stators. And save parking in storm. With your skill ,you can make a reliable machine. Regards - Frans - |
||||
| mroy0404 Newbie Joined: 05/03/2013 Location: CanadaPosts: 14 |
Frans For this first variable pitch hub I will use 3 centrifugal weights that will be L shaped levers with bearings installed at the pivot point, and mounted in the slots machined between the bearing blocks as seen in the photos. As the RPM increases the weights will be forced outward pushing the center hub up. I like the idea of making the axial flux generators in house at my shop. I can control the quality this way. In the future with a larger turbine I would like to control the pitch with a servo that would detect the power output of the turbine and control pitch as required. My over all plan is to manufacture the best turbine possible using only the best materials available. So my offer still stands, I can machine up all the solid metal parts as required. I really need the help of you guys to come up with the best generator design,(either it be axial flux or PMA type). We would also need the help from one or more of you to solve the power output detect then have the servo move as required. |
||||
| BlueSmoke Newbie Joined: 02/05/2013 Location: United StatesPosts: 25 |
Couldn't have said it better. Nice work, it's a joy to see and "drool" over. "Active Pitch wind turbine hub" is an awesome work to supplement the clean, lean turbine that you have sculpted. Can't wait to see the polished version ... but the painted version is very appealing as well. BlueSmoke |
||||
| Page 2 of 2 |
|||||
 Print this page |
