Go up in milling machine but mill all sorts of groove. 1. Mill keyway (1) mill opens wide type keyway to pursue 1 mill opens wide type keyway this kind of keyway uses 3 blade milling cutter to undertake machining is like a graph on horizontal milling machine more show 1 times. Attention: Before milling keyway, want to had done pair of knife works, in order to assure the symmetry of keyway. See a picture 2. Graph 2 mill are enclosed to knife method (2) mill is enclosed keyway is on the axis mill is enclosed keyway, use treatment of vertical milling cutter commonly. Should notice to chase a layer to be cut when cutting, because of keyway milling cutter axial feed cannot too big, see graph 3. Graph 3 on vertical milling machine mill closes keyway 2. Two paces have chamfer of mill T form and part of one's job of chamfer of form of T of mill of swallow end chamfer, use first establish milling cutter or mill of 3 blade milling cutter to give straight slot, use T form chamfer or milling cutter of swallow end chamfer to machine figuration finally on vertical milling machine next. If pursue,4 are shown. Graph chamfer of form of 4 mill T and graph of swallow end chamfer CNC MillingCNC Machining