How fast a spindle motor should I get?

[HereinCS]

Was looking at the Ekstrom, with a max rpm of 18k. Does anyone know in general the cutting rpm in different types of materials. I know this depends on bit size, but just in general. Thanks.

[15mgtar]

I also would like to know this. I am cutting teakwood.

[jsheerin]

http://www.pdscolombo.com/pdf/PDS%20...0Care%2007.pdf

Read page 3 for calculations for feedrates for various materials.

[15mgtar]

Thank you very usefull information! btw what is the meaning of number of cutting edges?

[jsheerin]

Number of cutting edges / teeth / flutes on the cutter. Common values are 1, 2, 3, 4, etc.

[ger21]

Originally Posted by HereinCS Was looking at the Ekstrom, with a max rpm of 18k. Does anyone know in general the cutting rpm in different types of materials. I know this depends on bit size, but just in general. Thanks.

18K is good down to around 1/8" bits. If you want to use smaller bits at speeds over 200ipm, you might want 24K.

[wcarrothers1]

My Ekstrom is 18K and I've been happy with it (or have not wanted for more)..

Although I have a engraving head for the super small bit stuff.

b.

[15mgtar]

Originally Posted by jsheerin Number of cutting edges / teeth / flutes on the cutter. Common values are 1, 2, 3, 4, etc.

so for example if I have a 2 flute flat endmill is that mean I have 2 cutting edges? is this correct?

and also what is feed / tooth means??

I'm so confused by this engineering calculation please help
THank you much in advance

[Al_The_Man]

There are many tutorials out there.
http://machine-tools.netfirms.com/17...ed_Milling.htm
http://www.endmill.com/pages/training/spdfeed.html
Al.

[15mgtar]

Originally Posted by Al_The_Man There are many tutorials out there. http://machine-tools.netfirms.com/17...ed_Milling.htm http://www.endmill.com/pages/training/spdfeed.html Al.

I still don't understand how to the way it calculate.
Can someone got a simpler way to teach my numbing brain?

[15mgtar]

is this enough? with 1 hp motor installed?