[StarkRavingMad]

So im not new to building machines, i retrofitted my onefinity with a ATC spindle and got 2.5 cubic inches MRR in aluminum.

Now im ready to move into steel(i dont have a need but I'm sure i could get work pretty quick and i have some parts i personally would like to make.)

I bought a second machine, a HDM. I bought it because i run my onefinity lights out and i could fill it with more parts machining aluminum.

https://shop.carbide3d.com/products/...39378702532669



That saidddddd, i love the idea of these cheap machines running and mistakes being cheap.
Im thinking what if i convert this thing with servo spindle and use it for steel.
Ill probably use Masso like my Onefinity and i definitely want ATC. so im wondering if this configuration will work. Keep in mind, i made this model in 20 minutes and its for nothing other than concept.

My Main concern is speed on the Z axis as thats part of the equation of MRR.

The idea would be to use a belt to drive from the Servo to the mounted spline linear bearing, this turns the shaft down to the spindle cartridge and allows the spindle to move up and down with the spline bearing moving along the shaft.
There would probably be another bearing to capture the shaft above the one transmitting power and rollers to prevent the spline linear bearing from moving up and down when the spindle cartridge moves.

Then for the ATC, i would also keep the air cylinder off to the side and making a lever to transmit the power down onto the spindle cartridge, just to keep the weight off the Z axis.

Im sure its not this easy and im missing stuff so help me see the light if im crazy.



https://www.mcmaster.com/61145K172/
https://www.mcmaster.com/61145K115/