Ignoramus11290 wrote:

With the original Bosch drives, my 145v motors, etc, the mill was
capable of 200 IPM rapids. Right now I have a 70v power supply with
30A8 drives and the top speed is 60-70 IPM.

My question is how much am I losing, in reality, but having faster top
speed. My feeling is not much, but I want to know.

This is not an entirely idle question, as I could install drives that
match motor voltage (30A20AC or 25A20AC or some such). They would use
120 VAC as power source.

So, would I see any improvement in anything valuable with higher top
speed or no?

Iggy, you are not running tested production programs making large lots of parts.

Speaking as a guy that has put all too many wrecks (crashes, also known as 'bumps' by the
green button pushers) I can say that going faster in rapid is counter productive
considering your level of learning (not a slam) and your applications.

I'm not a big fan of blink of an eye crashes. We have engineers that have pushed machines
to the edge but when it takes days or longer to get parts and then more time to repair the
machine, how much did was really gained out if this? Seconds mean nothing in this
context. Not to mention accelerated wear.

The pay dirt is reducing cutting time and tooling cost. There is where the real
productivity increases lay.

JMHO,

Wes