On Jan 6, 7:06*pm, BottleBob wrote:
On Sunday, January 6, 2013 3:46:18 PM UTC-8, jon_banquer wrote:
http://youtu.be/J1jvt1A4_Uk

* Let's see what the approximate Horsepower of that cut is.

Material Removal Rate
MRR = WOC X DOC X FEED RATE

* * * *.500" X 1.500" X 120 IPM = 90 cu.in. MRR

HP = Unit HP (.25 for Alum.) X MRR

* * * * .25 X 90 = 22.5 HP

Now the Haas VM3 specs say the max torque is 90 ft-lb @ 2000 RPM

Torque X RPM / 5252 = HP

So 90 X 2000 / 5252 = 34.3 HP

* * *Lower the RPM from 3,000 to 2,000 and the Haas should theoretically be able to do the cut.

http://www.haascnc.com/mt_spec1.asp?...LD_MACHINE_VMC

--
BottleBobhttp://home.earthlink.net/~bottlbob


All that does is prove how Haas plays games with HP ratings.

IOW, Haas lies and their HP rating is next to meaningless for real
world machining applications.

When Haas Automation needs to get the job done for their own
production at their Oxnard facility they rely on Japanese machines.
Nothing like having confidence in your own product.