Общий каталог Dijet 2018 - страница 391

Tooling by DIJET Indexable Tools Mirror Ball GRMTyPE ■ Application for choice of GRM type insert For relatively flat surface Surface roughness Machining efficiency GRM Ball nose end mill GRM Ball nose end mill Large pick feed Small pick feed Cutting by periphery edge, Cutting speed at the center therefore able to keep nominal point becomes "0", therefore cutting speed. generate cutter mark easily. Control cutter mark and achieved Improved machining good surface roughness. efficiency 形 GRM Possible to high precision & high efficient machining even in case of low speed machine. Attention for 3D profile milling GRM Ball nose end mill For wide concave surface For narrow concave surface For wide concave surface For narrow concave surface Good Remains stock removal. Good Good Attention for ramping milling Machined surface comparison (flat surface) Material: FCD700 GGG70 Uppe Tool No.: MBN-300-M16 + MSN-M16-77-S32C r dire ction Insert No.: GRM-300-R100 （φ30mm×R10） = 8,000min -1, = 4,800mm/min, z = 0.6mm/t, p = 0.1mm, e = 0.6mm Cutting point Ball nose end mill 20.0 [μm] 15.0 10.0 5.0 ction 0.0 r dire Unde -5.0 -10.0 -15.0 -20.0 0 0.5 1.0 1.5 2.0 2.5 [mm] Ra=2.43μm, Rz=12.44μm GRM Radius end mill 20.0 Good! [μm] 15.0 10.0 5.0 0.0 Note) Due to cutting point of insert changes at top of slope, -5.0 -10.0 the cutting marks sometimes changes with a program. -15.0 But there are no problems with the forming accuracy. -20.0 0 0.5 1.0 1.5 2.0 2.5 [mm] Ra=0.52μm, Rz=4.06μm C179