Surface shape injection mould parts, such as planar, cylindrical surface, conical surface, the thread surface, surface, holes, each surface in the mould functions are not the same. In the process of careful analysis of each surface effect, geometric characteristics and various technical requirements, to determine the surface processing method. To obtain qualified mold parts. Many classification methods of surface mold parts, mold manufacturing process from the point of view, according to the function of each component and surface in the die, can be divided into external surface, forming surface and the surface structure of three.
  1.shape surface and its processing. Surface profile refers to the surface constitute the basic shape characteristics of components, the outer surface of the rotating body parts, the outer surface is composed of rectangular plane or cylindrical surface, conical surface. These contour surface is datum processing other exterior surface, or reference plane assembly, or mold surface, simple die forming surface etc.. The processing of various parts of the contour surface from the beginning, in parts of the blank design and machining process, the machining allowance outline surface should be appropriate. On the plane processing, can be machined with the shaper, planer, milling machine and so on, to remove most of machining allowance, this process can only be rough machining, still need to be processed further. For cylindrical and conical surface, such as mold core, multi-purpose lathe turning, drilling, boring and in the center, tapping, the outer circle can be threaded; for the larger size of the parts, the vertical lathe machining; for the bus for the surface of a rotating body curve, multi processing by profile lathe.
  2.The molding surface and its processing. The molding surface is in the mold directly determines the product shape, size, accuracy and surface and these surface coordination related surface, convex, concave die surface such as injection mold. Usually the molding surface shape is more complex, high precision, low surface roughness, and the heat treatment requirements, form and position accuracy requirements are higher, in short, the molding surface is an important part of surface. Machining surface is one of the main and difficult points in the mold parts processing. In the processing method, the processing mechanism of different, can be divided into three categories: metal cutting. Processing of the workpiece cutting with cutting tools, machining method is the most widely used; special processing. Is the use of solar energy, electric energy, heat energy, chemical energy as a method of dynamic processing of the parts. Is a new type, processing methods have great future, more important position; special processing. Is the use of precision casting, super plastic forming, extrusion and other parts of the processing methods. Get a pattern of parts, need to determine which processing method, to analyze the technical conditions according to drawings marked and technical parameters, in order to get the most reasonable solution. On molding the surface is divided into two steps: one is the size processing, first to reach the size requirements; two is the finishing grinding, polishing, the forming of the roughness of the surface reaches the requirements of drawings.
  3.structure surface and its processing. Structure of the surface is in the mold positioning, orientation, constant surface distance, limit, connection, sliding action, it is to ensure the reliability of correlation dimension and position precision parts, connection and mutual movement plays a very important role. Structure of the surface for the simple geometry, such as planar, cylindrical surface, conical surface, holes, slots, half pass trough etc.. General can use metal cutting machine tool processing, and the most used in milling machine. Because the mold is a whole, so in the processing structure surface, should consider the consistency and coordination of the parts and other related parts, need to take into consideration, overall arrangement.