I can see how to use all of the formulas...

but having trouble with chip load per tooth and applying the formulas

you need that (IPT)to figure IPM inches per minute but where do you get that info

seems like you need IPM to figure IPT and you need IPT to figure IPM

I'm confused

looking at charts I see a 4 flute end mill has about .001 to .002 chip load per tooth at the smaller end mills < 1/4. Charts to me are best case scenarios. How do you figure chip load manually or is that just a given?

this is where i get lost

example: Given..

6061 aluminum

1/4 end mill

* do I pick an RPM I like? = 600

this i where I get lost

********************************

S.F.M. = 0.262 x D x R.P.M.

first figure the rpm

R.P.M. = 3.82 x S.F.M./D

3.82x165/.25=RPM

*******************************

RPM x IPT x #FL = IPM

600 x .001 x 4 = 2.4

my table crank turns .100 per revolution

10 turns = 1 inch

so at 2.4 inches per minute I have to turn the table crank 24 time in 1 minute

to = 2.4 IPM?

somebody give me a pointer please

but having trouble with chip load per tooth and applying the formulas

you need that (IPT)to figure IPM inches per minute but where do you get that info

seems like you need IPM to figure IPT and you need IPT to figure IPM

I'm confused

looking at charts I see a 4 flute end mill has about .001 to .002 chip load per tooth at the smaller end mills < 1/4. Charts to me are best case scenarios. How do you figure chip load manually or is that just a given?

this is where i get lost

example: Given..

6061 aluminum

1/4 end mill

* do I pick an RPM I like? = 600

this i where I get lost

********************************

S.F.M. = 0.262 x D x R.P.M.

first figure the rpm

R.P.M. = 3.82 x S.F.M./D

3.82x165/.25=RPM

*******************************

RPM x IPT x #FL = IPM

600 x .001 x 4 = 2.4

my table crank turns .100 per revolution

10 turns = 1 inch

so at 2.4 inches per minute I have to turn the table crank 24 time in 1 minute

to = 2.4 IPM?

somebody give me a pointer please

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