Inserted ball endmills(copy mills)

[Bill Cronkhite]

I need some recomendations on inserted ball endmills. Using .750 to rough is the main issue. The bosses don't wnat to spend the money because "we just tear them up", but solid carbide is way beyond what the are willing to spend. I guess what I need is recomendations with durability as the most important thing.

 

Thanks in advance

[uncle_dolan]

What material are you working with Bill?

 

We use iscar Multimaster Ballnose for AL and it works great. Id imagine they do it for steels as well (Probably IC900 grade)

[gcode]

Sandvik Coro216 are really good for roughing.

Ingersoll makes a similar tool as well

[within a thou]

The iscar is nice but Dijet SWB Series offers the exact same cutter but the inserts are a fraction of the price. I am guessing you are blowing through inserts because you are hitting rads smaller then 3/8 and this cutter is being used for remachining If that is the case try a parallel remachine using a smaller cutter using collapse and clear the rad out before going in with the 3/4. Is this inserted cutter the single insert or the 2 inserts? The single is for finishing the dual is for roughing. I use these in tool steels.

[Bill Cronkhite]

Thanks all for the replys.

Working in A-2 and D-2 soft. The machine isn't the best, Cincinnatti 850 bout 30-35 yrs old.

Managers are wanting to send everything out anymore because they seem to think that endmills and inserts aren't consumables and should last for years. just trying to keep repair and replacement parts in house. Most parts and dies are LARGE, we make truck bumpers.