[LikuiD]

Hi all,

We own a small workshop in Cairo, Egypt that's based entirely on conventional machines. Lately, we've faced some difficulties doing some parts using our conventional machines, and had to turn down a few jobs.
So we're thinking of investing in a CNC milling machine to use with these types of jobs.

Generally we work with 1-mm thick Low-carbon steel, and sometimes aluminum.
We have already determined all of our machine specifications, but couldn't determine the suitable horsepower that would be needed for the spindle motor.

So could anybody please suggested how much hP would at least be needed for our applications ?

Also, if we buy a used machine with a max. RPM of 6,000, would that be ok ?

Thanks !

[RICHARD ZASTROW]

An old "rule of thumb": 1 cubic inch of steel per minute requires 1 horsepower. That is for mild steel, not hardened tool steel. LOL

Dick Z

[Algirdas]

1-mm thick Low-carbon steel, and sometimes aluminum
Are You sure, You need milling technology? Isn't it metal sheet?

[LikuiD]

An old "rule of thumb": 1 cubic inch of steel per minute requires 1 horsepower. That is for mild steel, not hardened tool steel. LOL

Dick Z

Thanks for the tip Richard, I think mild steel & low carbon steel are one and the same, aren't they ?

1-mm thick Low-carbon steel, and sometimes aluminum
Are You sure, You need milling technology? Isn't it metal sheet?

It's not suitable for sheet metal forming machines, the workpiece consists of a hollow elliptical shape, that has a thickness of 1mm. The milling has to be done on 1 side of the ellipse only.