BRIAN.T
Cast Iron
- Joined
- Jul 23, 2018
- Location
- Los Angeles
I'm working on a new part, aluminum. this part has an approximately 7" deep pocket 2x3 wide. I'm using an .750 iscar multimaster solid carbide bar with a 3 flute 1/2 loc end mill.
After roughing everything as far down as I can with other tools I've found plunge milling to be the best method to remove the rest, aside from a little chatter against the walls it sounds great, albeit a little slow.... Maybe. I don't often use such long tools, so I'm curious to know what everyone else thinks of my feeds and speeds. I'll be going in tomorrow to kick up the feeds and speeds, I feel like 75 percent step over should be fine... Maybe, For now I'm at.
350sfm (1782rpm)
.0023 chip per tooth (12.3 ipm)
.250 step over
.350 plunge depth.
Total material depth 2.100
Mastercam morph toolpath, if anyone's curious.
After roughing everything as far down as I can with other tools I've found plunge milling to be the best method to remove the rest, aside from a little chatter against the walls it sounds great, albeit a little slow.... Maybe. I don't often use such long tools, so I'm curious to know what everyone else thinks of my feeds and speeds. I'll be going in tomorrow to kick up the feeds and speeds, I feel like 75 percent step over should be fine... Maybe, For now I'm at.
350sfm (1782rpm)
.0023 chip per tooth (12.3 ipm)
.250 step over
.350 plunge depth.
Total material depth 2.100
Mastercam morph toolpath, if anyone's curious.