Xjenderfloip
Stainless
- Joined
- Feb 9, 2005
- Location
- Rotterdam
Im trying to reach some serious values for milling on a cnc lathe with c-axis.
Example, i was milling a big trapeze thread.
First straight, then the flanks.
Im european so ill try to convert the values i use into inches.
I used an iscar roughing mill .4724 (12mm) in C45 (mild steel) im allowed around 3000 rpm with 1000mm feedrate per min (is that 371 SFM ?)
Dept of cut only .196 (5mm)
Anyway when i doubled the dept to .393 , the mill got pulled out soon after till it was cutting .70 deep before it got silent
The problem is that the driven tools we have are all ER 40 collets , i have looked for ER 40 collets like a weldon clamping, but cant find any supliers.
I could make them myself but only if no other option since the time it takes doesnt justify the price of collets.
But if i have to , does anyone know the exact corner the cone of a ER 40 has to be , is it degrees or is it relative like 1:3 ?
I can measure a collets' degrees but well its got cuts and i want to be exactly if i have to make them.
Also anyone out there doing heavy cuts with collets?
Example, i was milling a big trapeze thread.
First straight, then the flanks.
Im european so ill try to convert the values i use into inches.
I used an iscar roughing mill .4724 (12mm) in C45 (mild steel) im allowed around 3000 rpm with 1000mm feedrate per min (is that 371 SFM ?)
Dept of cut only .196 (5mm)
Anyway when i doubled the dept to .393 , the mill got pulled out soon after till it was cutting .70 deep before it got silent
The problem is that the driven tools we have are all ER 40 collets , i have looked for ER 40 collets like a weldon clamping, but cant find any supliers.
I could make them myself but only if no other option since the time it takes doesnt justify the price of collets.
But if i have to , does anyone know the exact corner the cone of a ER 40 has to be , is it degrees or is it relative like 1:3 ?
I can measure a collets' degrees but well its got cuts and i want to be exactly if i have to make them.
Also anyone out there doing heavy cuts with collets?