RE: [CAD_CAM_EDM_DRO] Re: Monarch 10EE lathe

The Monarch has two V belts driving the spindle, as does my Tree CNC lathe.
The Tree is direct drive and the Monarch has a two speed gear box on the
motor so the Monarch can produce more torque at low speeds. I'm not sure if
the belts would slip or the motor would stall first on the Monarch. I
haven't had a problem with either, but then I don't usually push it really
hard either.

I was assuming that you are talking about 0.100 on the diameter. I don't
think this would be a problem. Taking 0.100 on the radius might run it out
of power (or slip the belts) though. I've taken cuts like that on my gear
head Monarch just to try it, but wouldn't do it as a frequent thing.

Thanks,

Ward M.

wardmerk@... <mailto:wardmerk@...>



#)-----Original Message-----
#)From: dougrasmussen@... [mailto:dougrasmussen@...]
#)Sent: Tuesday, October 09, 2001 9:01 AM
#)To: CAD_CAM_EDM_DRO@yahoogroups.com
#)Subject: [CAD_CAM_EDM_DRO] Re: Monarch 10EE lathe
#)
#)
#)Marcus,
#)
#)FWIW, I don't think either of my 5hp CNC lathes would do that cut.
#)
#)The 10EE is a belt drive machine so I'd guess that at that diameter
#)it may not have enough belt "traction". At 450sfm cutting speed, the
#)spindle rpm would be about 575. Pretty slow to transmit much torque
#)without a gearhead.
#)
#)Incidently, Machinery's Handbook has a section on estimating
#)horespower for various machining operations. To use their info you
#)would have to know the approximate hardness of your material.
#)
#)Doug
#)
#)
#)
#)
#)--- In CAD_CAM_EDM_DRO@y..., "Marcus & Eva" <implmex@a...> wrote:
#)
#)(snip)
#)
#)> if you were to set up a 3" dia bar of 4140 with a positive rake
#)> carbide insert cutter 0.032 nose radius, and did a 0.100" deep test
#)cut, 3"
#)> from the chuck jaws, could the machine take it without strain? (I'm
#)not
#)> asking you to do it, just if you think the machine is capable of it)
#)
#)(snip)
#)
#)
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