really curious how my new DIY spindle will perform. Just requires some 10 mins of machining and - grmpfl! - forgot to order the belt…
Incredible! What engine is this?
Hi
Look good but maybe you should have got a bigger pulley for the spindle…
This would have given you more rpms at the cutter.
Its a small bldc (http://www.digikey.com/product-detail/en/QBL4208-81-04-019/1460-1088-ND) - just a first test run, if this concept works - and designed to be able to change the motor and test different types.
Yes, I changed the pulleys, so it will go up to ~8kRPM for higher rmp i have to change the motor to a lower pole count type - just had this here.
That’s a nice looking spindle. I see the digikey link for the BLDC. Where did you get the bearing part from? Did you make the bracket yourself to hold this?
There are two types of bearings: front is an angular contact bearing from SKF and in the rear is a standard ball bearing (think i ordered them at RS Components)= - the spindle housing i turned myself, the bracket I ordered - I was to inpatient to do it myself + I don’t have the tools for that in the moment. Just did some drawings and sent them to a contractor.
If I was a bit better with CAD tools, I would finalize the drawings and post them.
That is pretty cool but I’m curious as to why build your own spindle instead of buying a spindle? How does this compare to spindles such as the quiet cut spindles as to torque, speed, play in the bearings/spindle?
First of all I because wanted to make it. Second: I’d like to experiment a bit with different types of motors and controls.
I am making something very similar, using 2000watt brushless rc motor. Definitely post an update once you have it running.
well, tonight i tried to ruin my pulleys - to tire for precise boring - so I stopped for today