Mach 3 control of DC Brushless motor?

[templecorran]

in the past 30 something minutes I have found some interesting things out there in .net land

ER11 C8 100L (ebay ref 170370225742) and ER11 16mm dia (ebay ref 110391685240) (only good for a few days until the time's up)

However I also found Specifications for these collets, which all you mechanical engineering types knew already.
Bottom line is that I can easily make use of either the 8mm dia or 16mm dia chucks and attach them to a DCBM.

Now ... off autocad land to make some drawings

John

[John S]

What about this one

http://www.arceurotrade.co.uk/Catalo...-Collet-Chucks

Part way down the page, ER 16 on a 20mm parallel shank.

ER16's are good to 10mm
I suspect you have found out but they close a full mm so they will hold any size.

6 to 7mm will hold 6mm and 1/4", 3 to 3.5 will hold 3mm or 1/8" and 9 to 10 will hold 3/8" and 10mm so you only need about 4 collets to hold eith standard sized cutters.

[templecorran]

Yes, John, That's the one Jeremy used in his spindle design. Must confess I didn't notice the 1mm range in compression. After all, we were told as apprentices "that to be an electrician you need to be able to read or write, not necessarily both!"
I've now got a MSc in Electronics but keep that quiet :heehee:

I was thinking along the line of the smaller shaft for ease of coupling to the DCBM, but looking at the spec for them I see they feature a 4 or 5mm shaft. So a bit of lathe work is needed whatever way.

John

[HiltonSteve]

I am watching this thread with great interest because building my own spindle and interfacing it with mach is something that I also would like to do.

The mechanics will not be a problem for me but designing electronic boards and putting them together has never been one of my strong points!

What I do have though is a selection of various good quality DC motor speed controllers that may be of use and would be happy to send one to you if it will help. Let me know the spec of the motor and I will see if I have anything that will be any good to you.

[John S]

What I do have though is a selection of various good quality DC motor speed controllers that may be of use and would be happy to send one to you if it will help. Let me know the spec of the motor and I will see if I have anything that will be any good to you.

Don't give him one of MY damn DC speed controllers..........:surprised:

.

[HiltonSteve]

Well I wasn't going to give him one of mine....:naughty:

You better add one of them to your 'u owe me' list as well.

[templecorran]

Now now boys, Calm down... no fighting.:nope:

I don't need one "of YOUR damn DC speed controllers".
I can make my own!