How to choose the mold processing machine

How to choose the mold processing machine?

There are many kinds of molds, the working conditions of various molds are very different, and the failure forms are also different.

Mold processing has the following seven basic characteristics:

(1) The processing accuracy is high, a pair of mold is generally composed of concave die, convex die and mold base, some may also be a multi piece assembly module. Therefore, the combination of upper and lower die, the combination of insert and cavity, and the combination between modules all require high machining accuracy. The dimensional accuracy of the die is often up to μ M class.

(2) The shape and surface of some products, such as automobile panels, aircraft parts, toys and household appliances, are complex. The surface of the shape is composed of a variety of curved surfaces. Therefore, the cavity surface of the mold is very complex. Some surfaces are dealt with mathematically.

(3) The production of small batch mold is not mass production, in many cases, only one batch is produced.

(4) There are many working procedures, such as milling, boring, drilling, reaming and tapping.

(5) The service life of repetitive production mould is long. When the service life of a mold exceeds its life, it is necessary to replace the new mold, so the production of the mold is often repetitive.

(6) In the mold production of copying process, sometimes there is neither drawing nor data, and the copying process should be carried out according to the real object. This requires high imitation accuracy and no deformation.

(7) The die material is excellent and the hardness is high. The main material of the die is alloy steel, especially the die with long life is made of Crl2, CrWMn and other ledeburite steel. This kind of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the establishment of processing technology can not be ignored, and heat treatment deformation is also a serious problem in processing.
In order to prolong the service life of the die, the selection of machine tools should meet the processing requirements as much as possible according to the working conditions and failure forms of the die. For example, the function of the numerical control system should be strong, the accuracy of the machine tool should be high, the rigidity is good, the thermal stability is good, and the copying function should be provided.