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Author: MULAN –Plastic Molding Manufacturer
Mold processing refers to the processing of forming and billet tools, and also includes shearing dies and die-cutting dies. So what are the characteristics of mold processing? The following editor will explain to you: 1. The processing precision is high. A pair of molds is generally composed of a concave mold, a punch mold and a mold base, and some may be multi-piece assembly modules. Therefore, the combination of upper and lower molds, the combination of inserts and cavities, and the combination of modules all require high processing accuracy.
The dimensional accuracy of precision molds often reaches μm level. 2. Complex shapes and surfaces Some products, such as automobile panels, aircraft parts, toys, and household appliances, have a surface that is composed of a variety of curved surfaces. Therefore, the mold cavity surface is very complicated. Some surfaces must be processed mathematically.
3. Small batches The production of molds is not mass production, and in many cases only one pair is often produced. 4. There are many processes. Milling, boring, drilling, reaming and tapping are always used in mold processing. 5. Repeated production The use of the mold has a life span.
When the use of a pair of molds exceeds its life, it is necessary to replace a new mold, so the production of molds is often repetitive. 6. Profiling processing Sometimes there is neither pattern nor data in mold production, and profiling processing must be carried out according to the actual object. This requires high imitation precision and no deformation.
7. Excellent mold material and high hardness. The main material of the mold is mostly made of high-quality alloy steel, especially the mold with long life, which is often made of ledeburite steel such as Crl2 and CrWMn. This type of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the establishment of processing technology cannot be ignored, and heat treatment deformation is also a problem that needs to be taken seriously in processing.
According to the above-mentioned 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 should be strong, the precision of the machine tool should be high, the rigidity should be good, the thermal stability should be good, and it should have profiling function.