564 Каталог SUMITOMO 2018 Инструмент металлорежущий Пластины Резцы Фрезы Сверла Стр.N8

Каталог SUMITOMO 2018 Инструмент металлорежущий Стр. N8 0564 Lab2u

Technical Guidance Technical Guidance Basics of Milling Relation Between Engage Angle and Tool Life Workpiece feed direction Engage angle p, E Insert Rotation Engage angle denotes the angle by which the full length of the cutting edge comes in contact with the workpiece, with reference to the feed direction. The larger E is, the shorter the tool life. To change the Value of E: 1) Increase the cutter size 2) Shift the position of the cutter Large diameter F (Small) -30' 0° 30° 60° Engagement angle Small diameter (Large) 0,6 OA GG25 -20° 0° 20° 40° 60° 80° Engagement angle Relation between the number of simultaneously engaged cutting edges and cutting force: 0 or 1 edge in Only 1 edge in 1 or 2 edges in 2 edges in contact 2 to 3 edges in contact contact at any time. contact at any time. contact To ImproVe Surface Roughness Milling inserts with wiper flat When all the cutting edges have wiper flats, a few teeth are intentionally eleVated to play the role of a wiper insert. - Insert equipped with straight wiper flat (Face angle: Approx 15' - 1°) - Insert equipped with curVed wiper flat (Eg. curVature R500) Integral wiper insert system A system to protrude one or two inserts (wiper insert) with a smooth curVed edge just a little beyond the other teeth to wipe the milled surface. - (Applies to WGC, RF types etc.) Influence of different face angles on surface finish Feed per one tooth Feed per one tooth - Workpiece: 34CrMo4 - Cutter: DPG 5160 R (Single tooth) Feed per one tooth Feed per one tooth ft doc : 154 m/min 0,234 mm/tooth 2 mm x 2.000 'L- X100 - Face angle : 28' : 6' Effects of haVing wiper insert (example) Feed per one reVolution -1 - Workpiece: GG25 - Cutter: DPG 4100 R - Insert: SPKN 1203 - Axial run-out: 0,015 mm - Radial run-out: 0,04 mm - Vc = 105 m/min - ft = 0,29 mm/tooth (1,45 mm/reV) : Only normal teeth : with 1 wiper insert N8