The basic characteristics of precision mold processing

Update:15-02-2019
Summary:

The basic characteristics of precision mold processing: […]

The basic characteristics of precision mold processing:

1. Complex shapes Some products, such as automobile covers, aircraft parts, toys, and household appliances, have a surface that is composed of a variety of curved surfaces. Some surfaces must be processed by mathematical calculations.

2, processing accuracy requirements: a mold is generally composed of a concave mold, a convex mold and a mold base, and some may also be a multi-piece split module. There is a combination of upper and lower molds, a combination of inserts and cavities, and the assembly between modules requires high machining accuracy. Precision molds often have dimensional accuracy of up to μm.

3, precision mold processing procedures: mold processing always uses milling, boring, drilling, reaming and tapping and other processes.

4, repeated production: the use of molds have a long life. When the use of a mold exceeds its life, it is necessary to replace the new mold, so the production of the mold is often repetitive.

5, small batch: the production of mold is not mass production in batches, in many cases often only produce one.

6, profiling: mold production sometimes has no drawings, no data, but also according to the real thing profiling. This requires high precision and no distortion.

7. Excellent mold material and high hardness The main materials of the mold are made of high-quality alloy steel, especially the high-life mold, which is often made of Crl2, CrWMn and other Laisite steel. This type of steel has strict requirements from rough forging, processing and heat treatment. Therefore, the preparation of the processing technology can not be ignored, heat treatment deformation is also a problem that needs to be taken seriously in processing.

According to the above many characteristics, it is necessary to meet the processing requirements as much as possible in the selection of machine tools. For example, the function of the numerical control system is strong, the precision of the machine tool is high, the rigidity is good, the thermal stability is good, and the contouring function is provided.