What kind of mechanical advantage are you talking about in regards to keeping the z-axis Acme screw? |
Mechanical advantage in the simple machine definition of the term. The ball screws are ~5 tpi and the acme is 10(?) tpi. However the ball screw has much higher mechanical
efficiency due to less friction. Maybe someone will chip in with some real world numbers. The ball screw probably needs less power to raise the load but it would be close. The acme will have superior holding power.
In the acrticle you linked to S J H says his IPMs are 55 less on the z-axis, and backlash is 4 - 6.7 times as much also. It would be an interesting thought if I knew the advantage. |
He stated a backlash of .002" or less. That's a very usable figure with software compensation. Frankly I'd be surprised if the best cncfusion kit can beat that by 6.7X or even 4X measured at the head.
btw I use a cncfusion kit on my X2 and have nothing but good things to say regarding the company.
It would be an interesting thought if I knew the advantage. |
It would be interesting if I could explain it.
Maybe it's just a red herring. If you don't mind splashing out for the deluxe kit and the 203's it should be an awesome combination.