If at all possible avoid the sharp inside corner. If any impact
at all part will start to crack there. Also hard to machine.
How big a radius can you stand? If you have rotary table and
milling capability it should be possible to do with an end mill.

Also how many parts?

GmcD

On Mon, 15 Aug 2005 18:54:29 GMT, (John
Flanagan) wrote:

On Mon, 15 Aug 2005 20:24:27 +0200,
(=?ISO-8859-1?Q?Nick_M=FCller?=) wrote:

John Flanagan wrote:

I've got a part I need to machine (repeatedly) and was wondering if
anyone might make a suggestion for an effective and inexpensive
method. A photo of the cut that needs to be made can be found he

Does the part really have to look that way? I would say that the
designer has only seen a shop from the outside.

Ow, that hurts :^). But yes, it does. The part rotates in a sleeve.
The 90° cutout allows the part to rotate but it's rotation is limited
by a pin placed in the sleeve.

I've made these before just by chucking it in a fixed 5C holder on the
mill and by unchucking, rotating a little and then rechucking. Time
consuming PITRE plus it makes an ugly faceted surface. I was looking
for some method that would be faster and give a nice smooth surface
where the cutout meets the cylinder.


John

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