ATC Options?

[andy_con]

do you need such a high spindle speed?just think a large machine like a haas has an 8-10k spindle speed with bucket loads of torque and that can cut fast and deep. its not all about spindle speed but machine strength and torque. so could you get away with a slower but more powerful spindle?

[Davek0974]

Possibly, but this was built for small cutters in aluminium, small cutters are best in carbide, carbide likes high speeds, sort of horses-for-courses really.

I am sure my stuff can be done in HSS but not calculated the feeds, I will have a look.

Engraving really does need speed I think though??

[Davek0974]

Interesting,

Just calculated the speeds for a 2mm cutter in 6061T6 and it seems I am seriously under-using carbide anyway.

In Carbide, at full speed it needs 82,000rpm, HSS wants 23,000rpm

The reason I had not seen the high speed before was because I limited HSMAdvisor to calculate feeds based on my limit of 24,000rpm, removing this limit shows the full feed & speeds.

Anyone got an 82,000rpm spindle? :)

Anyway, HSS will do the job at say 6000rpm but it will be much slower.

[Davek0974]

Should that be "Unless your'e using large tools" there Jazz?? :)

[andy_con]

My denford triac has a 4k spindle and I don't have any problems.

I do 2mm deep cuts using an 8mm cutter at f250

[JAZZCNC]

Should that be "Unless your'e using large tools" there Jazz?? :)

Nope said correctly Andy said Speed wasn't required. I Said "Unless using small tools" Then speed is required.

My denford triac has a 4k spindle and I don't have any problems.

I do 2mm deep cuts using an 8mm cutter at f250

Compared to me doing 4mm Doc at F900. 11000rpm!! . . . . BIG DIFFERENCE. . . Oh and that's on Router not a Mill.!

[Davek0974]

I stand corrected ;)

Yes, speed is needed, it can be done on a slow machine - i've used 1/16" on the old bridgeport before but the feed rate is microscopic!

The high speed spindle is very useful.

[JAZZCNC]

do you need such a high spindle speed?just think a large machine like a haas has an 8-10k spindle speed with bucket loads of torque and that can cut fast and deep. its not all about spindle speed but machine strength and torque. so could you get away with a slower but more powerful spindle?

Unless your using small tools then speed is required.!! . . . This is small light duty machine who's main operation will be with small tooling requiring high speeds 10K minimum.