CNC milling can be used to create complex 3D shapes or to apply a machined surface or features to parts made both plastics and metals. The advantage of multi-axis milling machines makes CNC milling process versatile, as well as accurate and repeatable, for creating many different types of part features of complex geometries.
CNC lathes allow us to get high-speed turning of both plastics and metals from bar or block material. The turning process allows the production of complex external and internal geometries, including all kinds of threads. For any round shaped components for example, shafts, worms, spheres, CNC turning is a more efficient method compared with CNC milling. .
EDM / Wire EDM And Surface Grinding
Electrical discharge machining (EDM) is an essential manufacturing process used primarily on tool steels for plastic injection molding or pressure die casting. EDM uses a conductive graphite or copper electrode submerged in a dielectric bath of water or oil. When a high voltage current is applied to the electrode it sparks against the tool wall, etching away at the surface to produce deep holes, ribs, undercuts and surface textures that are difficult to machine conventionally. When done properly, EDM can produce excellent surface finishes with tight tolerances, virtually eliminating the need for secondary polishing.
Surface grinding is an automated machining process used to make extremely flat and smooth surfaces. In this method, the workpiece is held in a fixture and then reciprocated across the face of a precision grinding wheel.
