The requirements of mould design and production are: accurate size and clean surface; Reasonable structure, high production efficiency and easy automation; Easy to make, high life and low cost; The design meets the technical requirement and the economy is reasonable.

The design of die structure and selection of parameters must consider the factors such as rigidity, orientation, unloading mechanism, positioning method, gap size and so on. The vulnerable parts on the mould should be easily replaced. For plastic mold and die casting, reasonable pouring system, molten plastic or metal flow state are also considered, and the position and direction of the cavity are entered. In order to improve the productivity and reduce the loss of runner, multiple cavity molds can be used in one mold to complete the same or different products simultaneously. High - efficiency, high - precision and high - life mould should be used in mass production.

The stamping die should adopt the multi-station progressive die, which can be inserted into the die by carbide insert to improve the life span. In small batch production and new product trial production, the structure is simple, the manufacture should be adopted fast, low cost, simple dies, such as the combination punching die, die plate, polyurethane rubber die, low melting point alloy mould, zinc alloy die and superplastic alloy mould, etc. The mould has begun to adopt CAD (CAD), which is to optimize the design of the mould through a system with computer as the center. This is the development direction of mould design.

Mould manufacturing is divided into plane punching die and space - shaped cavity mold. The punching die can be used to match the dimensions of the punch and the die, some even without clearance. Other forging die such as cold extrusion die, die casting die, powder metallurgy die, plastic mould, rubber mould and so on belong to the type cavity die, used for forming the three-dimensional shape of the workpiece. The shape of the cavity is in long, wide and high three directions, with complex shapes and difficulties in manufacturing. Mold production is generally single and small batch production, manufacturing requirements are strict and precise, and more precision processing equipment and measuring devices.

The plane blanking die can be used for the initial forming of edm, then the precision can be further improved by means of forming grinding and coordinate grinding. It can be used for grinding of the surface grinding machine of optical projection curve, or the surface grinding machine with the indented or repairing grinding wheel mechanism, or the grinding tool of special forming grinding tool can be used in precision surface grinding machine. The coordinate grinder can be used for the precision positioning of the mould to ensure the precision aperture and the hole spacing. It can also be used for the CNC continuous trajectory coordinate grinder to grind the convex and concave mould of any curve shape. The model is used in the processing of imitation milling machine, edm processing and electrochemical machining. The processing quality of the cavity can be improved by the combination of the copying milling process and nc joint application and the addition of three moving head devices in the edm. The increase of production efficiency can be improved by increasing the electrolytic electrolysis.