Defining tapered endmills

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Defining tapered endmills

Postby LonePine » Mon Sep 01, 2014 12:36 pm


Is there a thread on the forum that discusses how to define tapered endmills?

Example: if I'm using a tapered endmill 1/4" shank to 1/8" ballend, do I simply define it as a 1/8" ballend. (In other words always just define the bit in terms of the tip, and forget the taper?)
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Re: Defining tapered endmills

Postby Adrian » Mon Sep 01, 2014 12:59 pm

Personally I always set them up as straight ballnoses as the types of 3D work I do with them only uses the tip.

However you could use the Tapered Ballnose tool type but you'd need to work out the side angle.
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Re: Defining tapered endmills

Postby Leo » Mon Sep 01, 2014 1:12 pm

I wet through the trouble to draw the tool.

1/8 ball

1/4 shank

Length of taper on mine is 1"

So - I drew a 1/8 ball and a 1/4 shank

I laid out the 1" taper length

I drew a line tangent to ball and to intersection of cut depth.

I drew a line for the center line of the cutter - then trimmed the ball

I trimmed all un-needed lines.

That's the HARD way. :lol:

At the time I did that - I was not aware of the easy way. :oops:

The easy way is the use the tapered ball nose mill tool in the database.
The angle should be available from the manufacturer.
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Re: Defining tapered endmills

Postby martin54 » Mon Sep 01, 2014 7:07 pm

Well I've once again learnt something new, I didn't know the tapered endmill option was available in the tool data base, mind you I don't have any tapered endmills at the moment so I have a small excuse :lol: :lol: :lol:
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