Общий каталог ZCC-CT 2019 - страница 932

Technical information – milling Technical information Indexable milling Cutting performances of different approach angles A Approach angle Depiction Explanation Turning Axial force is largest. It will bend when machining thin-wall work 45° piece, and reduces the precision of work piece. It is benefit to avoid fringe breakage of work piece when machining cast iron. The main purpose is to resolve the radial cutting force, it is often 75° used for general face milling. B Milling The axial force is zero in theory, suitable for milling thin plate 90° workpiece. Inserts with wiper Using standard inserts Using inserts with wiper C Drilling fz 0,03–0,10 mm fn Insert with wiper Rz Standard insert Normal surface quality High surface quality The wiper insert must protrude below the other inserts by 0.03–0.10 mm at axial direction, only that the wiping function can take into effect. D Generally speaking, a cutter can assemble only one wiper insert. If the diameter of cutter is much bigger or cutter’s feed rate per revolution is bigger than the length of wiper edge, 2 to 3 wiper inserts can be assembled. Information Technical Cutting width Generally speaking, the relation between cutting width and tool cutting diameter is Dc = (1.2–1.5) ae. In the machining practice, it needs to avoid coincidence of tool center and workpiece center as much as possible. E Dc: Tool diameter ae: Lateral infeed Index (1,2–1,5) ae Dc = ae B 469