rake60
Well-Known Member
- Joined
- Jul 8, 2007
- Messages
- 4,756
- Reaction score
- 126
Rake in a parting tool as all about chip control.
A slight front edge rake will cause the chip to curl
Sometimes that is a good thing, sometimes it isn't.
If you look a the new carbide parting inserts, like this
one from Iscar;
You see both frontal and side rake.
That geometry causes the chip to curl and roll inward narrowing
the chip so it has much less chance of hanging up in the groove
and breaking the tool. I doubt that kind of relief could be hand
ground at home, but it does make for a good example of why it is
made as it is.
Rick
A slight front edge rake will cause the chip to curl
Sometimes that is a good thing, sometimes it isn't.
If you look a the new carbide parting inserts, like this
one from Iscar;
You see both frontal and side rake.
That geometry causes the chip to curl and roll inward narrowing
the chip so it has much less chance of hanging up in the groove
and breaking the tool. I doubt that kind of relief could be hand
ground at home, but it does make for a good example of why it is
made as it is.
Rick