CNC milling
It can be said that the rapid development of plastic mold manufacturing industry mainly benefits from the innovation of CNC milling technology.From the traditional ordinary milling machine to the three-axis machining center, and then to today's five-axis high-speed milling, the machining of any complex three-dimensional surface part can become a reality, and the hardness of the material is no longer a limited problem.The main cavity and surface of plastic mould are finished by CNC milling.
High speed milling cutter is adopted for the milling cutter (typical cutter is integral carbide ball end milling cutter, end milling cutter and ripple milling cutter), high speed (spindle speed can reach 40,000 RPM) and small cycle feed amount, which greatly improves the production efficiency and the accuracy can be stable up to 5 mm.At the same time, due to low milling force, less thermal deformation of workpiece, smaller milling depth, and faster feed (linear motor, fast moving speed up to 80m/min, acceleration up to 2g), surface smoothness can reach Ra<0.15 cleaning m.High speed milling can process 60HRC hardened die steel, so high speed milling allows cutting after heat treatment, making the die manufacturing process greatly simplified.Foreign advanced CNC milling equipment manufacturers include Swiss GF processing program, German DMG, German hammer, Japanese pastoral, Germany rhodes, Germany OPS, Germany wave, Germany indyx, Japan yamazaki mazark, Japan big snuggle, American haas and so on.