On a simple lathe cut, what happens to the energy? Energy being force time distance and both are happening.
Being neither a physicist nor a machinist I am puzzled.
I guess some energy must go to shearing. But, that energy would be the same for a 1mil cut as a 10 mil cut. I have no idea how tightly metal atoms stick to each other or how many such atoms one needs to pull apart. Maybe though we are really pulling apart the loosely bound atoms at crystal boundaries?
But clearly 10mil takes way more energy to make than a 1mil though the number of atoms pulled apart from each other is the same.
I guess the chip then bends (all my chips are bendy). So, is most of the energy actually used to bend the chip? I would guess that bending a piece of metal is probably proportional to like the square of the thickness. So, is that why deep cuts are so much harder to make?
So, energy is used to shear, to bend, and the chips to break. (And sound and kinetic energy (translational and rotational) of the chips.) And in shearing and bending heat is produced, but I have the sense that some energy is left behind in the bend, separate from the heat.
Clearly fuzzy language--I just don't enough physical science to state precisely.
I don't think this question really has much to do with hobby machining--maybe better for a physics list? But hobbies are funny--so many things about machining are interesting.
-Bill
Being neither a physicist nor a machinist I am puzzled.
I guess some energy must go to shearing. But, that energy would be the same for a 1mil cut as a 10 mil cut. I have no idea how tightly metal atoms stick to each other or how many such atoms one needs to pull apart. Maybe though we are really pulling apart the loosely bound atoms at crystal boundaries?
But clearly 10mil takes way more energy to make than a 1mil though the number of atoms pulled apart from each other is the same.
I guess the chip then bends (all my chips are bendy). So, is most of the energy actually used to bend the chip? I would guess that bending a piece of metal is probably proportional to like the square of the thickness. So, is that why deep cuts are so much harder to make?
So, energy is used to shear, to bend, and the chips to break. (And sound and kinetic energy (translational and rotational) of the chips.) And in shearing and bending heat is produced, but I have the sense that some energy is left behind in the bend, separate from the heat.
Clearly fuzzy language--I just don't enough physical science to state precisely.
I don't think this question really has much to do with hobby machining--maybe better for a physics list? But hobbies are funny--so many things about machining are interesting.
-Bill