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26-07-2016 #11
I only plan on cutting wood and maybe some plastics.
I have already read that thread from start to finish which is why my original plan was to make one of those brushless spindles, thats why i made my motor mounts to suit 52mm dia spindle body. However making a spindle now is out of the question as I no longer have access to a workshop. I really do miss the working on the tools sometimes!
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are the air cooled ones really much worse than the water cooled? because i'm under the impression that the water cooled system requires a separate water tank and pump? which would just put the price up further.
and a 2 ltr Tupperware container for the water...Clive
The more you know, The better you know, How little you know
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26-07-2016 #13
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26-07-2016 #14
How much would you be willing to sell it for Neil? Because something like that would be perfect for my machine and I still have the option upgrade to a water cooled spindle later on when I have more money.
What are the sizes/specs?
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26-07-2016 #15
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26-07-2016 #16
Thanks Neil I'll have a look through the thread then and let you know.
Is 6500rpm fast enough though? I thought much faster spindle speeds were needed for wood carving?
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27-07-2016 #17
Thanks for the offer Neil but i think i'm going to go with the water cooled spindle. I think the 0.8kw spindle would be fine for my machine but as the 1.5kw is only about £5 more through the same supplier on ebay i might just go for that one.
Thanks again for everyones help, i will more than likely be posting soon with questions on how to wire it up lol.
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27-07-2016 #18
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01-08-2016 #19
That spindle is just a simple DC motor, so almost any PWM controller can be used. If you want to control it from the CNC software then you need something similar to this:
http://www.ebay.com/itm/12V-24V-48V-...AAAOxypthRtpaL
But if you just want manual speed control then you can also get a much simpler and cheaper one, like this:
http://www.ebay.com/itm/Universal-DC...gAAOSwOVpXcqnO
On the other hand... I have a similar spindle and have speed control as well, but I almost always run the motor at full speed. The motor is pretty weak and by reducing the speed it gets even weaker. So, it depends what you want to do with your CNC, perhaps speed control is not necessary at all.
A VFD controlled brushless "real" spindle is of course much better than a DC motor, but probably not going to make life easier for you, unless you really need it. Maybe you could start with the simple DC motor and buy a VFD and a three phase motor at a later stage when you know what you really need or want or can afford. I bought a similar, 1.5kW air cooled spindle motor but I bought a better VFD, a Bosch Rexroth, because I wanted good service, support and documentation, as well as proper electrical design and safety. Buying a real brand makes it a bit more expensive though not a lot more, but the benefits are in my opinion many, so the extra cost is money well spent. I have not yet had time to install my spindle, still have the DC motor on the CNC, but have run it for test and all I can say is that for my needs and my environment it was the right decision to buy an air cooled spindle.
Many people say that brushless air cooled spindles are noisy, and maybe they are noisier than water cooled ones, but definitely not noisier at the same speed as the DC motors, or brushed motors like the Kress. Air cooled motors are easier to handle as well, since you don't need to install water pipes, cooling fluid, pump and pump control. Never the less, of course, if you are going to use your CNC 8-10 hours a day 5-6 days a week then water cooled is worth the trouble, but again, even if you buy air cooled to start with, upgrading to water cooled once you realize you need it is pretty simple.
Sorry, I can't help you with LinuxCNC or the mx3660.
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even if you buy air cooled to start with, upgrading to water cooled once you realize you need it is pretty simple.
air cooled
http://www.ebay.co.uk/itm/like/18192...ype=pla&crdt=0
water cooled
http://www.ebay.co.uk/itm/like/18175...ype=pla&crdt=0
For the water cooled you will need a small pump £3 from eBay and a 2lr Tupperware container for the water. No contest.
Be aware that both of the above only have ER11 colletsLast edited by Clive S; 01-08-2016 at 02:52 PM.
..Clive
The more you know, The better you know, How little you know
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