If you can take a deeper cut to get under that scale with your end mill , you wouldn't be cutting it . You would then be cutting your material and just pushing off that scale as the tool breaks out if that makes sense .
Not sure about the climb cut. Is it the same as using a router in woodworking? When cutting along the edge of a work piece, a climb cut would be moving the cutter towards me, if the work piece is on the left side of the cutter (or in the case of milling machine, moving the table to the left with the cutter being on the backside of the work piece). Is that right and if so, should I be using a conventional or climb cut when doing edges?
If you can take a deeper cut to get under that scale with your end mill , you wouldn't be cutting it . You would then be cutting your material and just pushing off that scale as the tool breaks out if that makes sense .
Its kind of more complicated with a mill, but the same idea.
Basically if you imagine the recoil force being put on the part, if it is pushing backwards against the direction of the mill, that is "conventional" milling, basically if there is any backlash, its being taken up by the mill pushing back against the leadscrew
climb milling is the opposite way, if the mill has backlash and the recoil forces exceed the force it takes to move the table, it will cause the endmill to jump forward and drive into the work, a really bad situation, but otherwise if taking very light cuts, it gives a much nicer finish.
// just imagine the endmill being a wheel and your work being the road, if its going against the direction you are going, that is conventional, if it is "helping" the mill along, that is climb
I don't understand the backlash part but the travel direction sounds like using a router. The simple rule I learned was to take your right hand with index finger pointed up and the thumb extended to the left. Your thumb points to the work piece and your index finger points in the direction of the cut, ie router travel direction. That would be conventional cutting. Does this work with milling or am I still missing something?
I just think of it like this: when you're climb milling (or climb cutting with a router) the direction of linear travel is the same direction (but at a lower speed) the cutter would pull your workpiece. In conventional cutting the cutter is being forced against the work.That absolutely makes sense. I'm still a little nervous about taking too much DOC but I read somewhere that too little is harder on the cutter than a deeper cut. Part of the learning process I guess.
I don't understand the backlash part but the travel direction sounds like using a router. The simple rule I learned was to take your right hand with index finger pointed up and the thumb extended to the left. Your thumb points to the work piece and your index finger points in the direction of the cut, ie router travel direction. That would be conventional cutting. Does this work with milling or am I still missing something?
That absolutely makes sense. I'm still a little nervous about taking too much DOC but I read somewhere that too little is harder on the cutter than a deeper cut. Part of the learning process I guess.