Re: [CAD_CAM_EDM_DRO] OT - Machning Acetal homopolymer (Delrin)

Hi All:
     In Brief the following is part of what I answered.
About your cutter rates.   The Radial DOC (depth of cut) is over 1/3 the cutter diameter which is to

much if you are plunge cutting the full width of the cutter as you will be in pocketing.  If you are

just side milling a straight side you can go that deep if you watch your feed rate.  The whole trick is

to cut as much material off per each flute as the cutter will allow you to put into the flute space and

not pack it.  You can calculate the approx. cross sectional area of the flute of a two flute cutter by

dividing the area of the cutter diameter by four.  Then take 1/2 the Circumference of the cutter (for

full plunge cutting) times 1/2 the feed per rev. to get the area you are cutting with each flute per

each rev.  Compare this to the 1/4th the area of the total cutter dia. area.  A good place to start is

with only filling about half the area with a chip, as the chips swell with the cutting heat, then increase

the feed rate as the material and the cutter will allow.
                                                                                                       GOD'S BLESSING
                                                                                                                Bill T.

On Thu, 22 Jul 2010 00:03:29 EDT, wanliker wrote

>  
>
> If it is not a real long discussion go ahead for now.
> bill
> List Mom
>
> In a message dated 7/21/2010 8:58:26 P.M. Mountain Daylight Time,
> wthomas@... writes:
>
> ) The list MoM Bill would like us to discuss machining on the other group
> which I don't have the name to.
> Would some one list it so we can go in detail there.
>
> [Non-text portions of this message have been removed]
>
>

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