The difference between end mills and keyway cutters:
1. The end mill is generally four-bladed and three-bladed, and the keyway cutter is two-blade (favorable to ensure the diameter accuracy after re-grinding);
2. The main cutting edge of the end mill is designed on the circumference. The end face is on the cutting edge, and the main cutting edge of the keyway milling cutter is on the end face, and the cutting edge is on the circumference.
3. Therefore, the end mill should not be constituted axially. It must be used. It can be a tendency into the knife or spirally. The amount is not so large, because the chip pocket on the cutting edge is shallow. The keyway milling cutter feeds in the axial direction.
Therefore, it will wear near the end, mainly re-grind the end, and the cutting edge will not re-grind to ensure the matching precision of the machining groove (H9, N9).
Augusttools Cnc Endmill Carbide Cutting HRC55 3 Flutes Milling Cutter Roughing End Mill Metal Cutter Aluminum Copper Processing