Core technical requirements for mold manufacturing from the perspective of precision machining

2026-01-05 09:48:51

1. Structural strength and stiffness: The mold needs to withstand the expansion force, impact force, and pressure of the billet during the forming process, eSPECIALly in high-pressure processes such as die-casting and forging. The mold needs to have excellent structural strength and stiffness to avoid deformation or damage. Precision machining optimizes the structural design of mold parts and uses high-precision cutting processes (such as CNC precision milling and grinding) to control the uniformity of part wall thickness and dimensional accuracy. At the same time, through a combination of heat treatment and precision grinding, the hardness and rigidity of the parts are improved, ensuring that the mold can maintain structural stability without deformation, cracking, or other problems during long-term high-frequency operations.

2. Surface hardness and roughness: The surface of the mold cavity is in direct contact with the molding material, and its hardness and roughness directly affect the surface quality of the product and the service life of the mold. Precision machining uses precision grinding, polishing, coating and other processes to control the surface roughness of the mold cavity below Ra0.02 μ m, ensuring that the formed product surface is smooth and scratch free; At the same time, precision heat treatment processes such as high-frequency quenching and nitriding are used to increase the surface hardness of the mold to HRC60 or higher, enhance the wear resistance and corrosion resistance of the mold, extend the service life of the mold, and reduce production replacement costs.

3. Processing accuracy: Processing accuracy is the core indicator of precision machining of molds, which directly determines the dimensional consistency and assembly adaptability of formed products. The machining accuracy of molds includes dimensional accuracy, positional accuracy, and positional accuracy. For example, the dimensional error of the mold cavity needs to be controlled at the micrometer level, the fit gap between the convex and concave molds needs to be uniform and consistent, and the positional accuracy of the positioning hole needs to be accurate and precise. Precision machining achieves high-precision machining of mold parts by introducing high-end equipment such as CNC precision machining centers, wire cutting machines, and electric discharge molding machines, combined with real-time detection and calibration of precision measuring instruments (such as coordinate measuring instruments and laser interferometers), to ensure that each part meets the overall requirements of mold use after assembly.

4. Complex structure processing capability: The increasingly complex appearance of modern industrial products places higher demands on the cavity structure and contour shape of molds. Many molds require special structures such as deep cavities, narrow gaps, and complex curved surfaces, which pose severe challenges to the complexity and accuracy of processing technology. Precision machining can achieve integrated processing of complex mold structures through advanced technologies such as five axis linkage CNC machining and 3D printing molding, without the need to disassemble parts or subsequent splicing. This not only improves the stability of the mold structure, but also avoids the impact of splicing gaps on molding accuracy, perfectly adapting to the molding needs of complex products.

The development and innovation of precision machining technology have directly promoted the upgrading and iteration of the mold manufacturing industry. Traditional processing techniques are unable to meet the high-precision and complex structural requirements of high-end molds, while the application of precision processing technology not only improves the quality and service life of molds, but also shortens the production cycle of molds and reduces mold manufacturing costs. For example, through precision machining technology, the production cycle of molds can be shortened by more than 30%, and the service life can be extended by more than 50%, which provides core support for the scale production and product upgrading of downstream industries. At the same time, the continuous advancement of precision machining technology (such as intelligent precision machining and nanoscale precision machining) has also promoted the development of molds towards high-end, personalized, and intelligent directions, adapting to the development needs of strategic emerging industries such as new energy, high-end equipment, and electronic information.

It is worth noting that the development level of mold production is one of the important indicators of mechanical manufacturing level, and precision machining technology is the core indicator to measure the level of mold manufacturing. In the context of increasingly fierce competition in the global manufacturing industry, high-precision and high-quality molds have become the key for enterprises to enhance their core competitiveness. Under the empowerment of precision machining, mold manufacturing can not only achieve high-precision and high-efficiency molding of products, but also reduce the scrap rate of products and enhance their market competitiveness. Whether it is precision COMPONENTS in the automotive industry, micro components in the electronics industry, or high-end structural components in the aerospace industry, their production and manufacturing cannot be separated from the support of precision machining molds. Precision machining has become the core engine for the high-quality development of the mold manufacturing industry.