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Obtaining A Workpiece Determined By The Shape of Dustbin Mould from xiu's blog

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The manufacture of Dustbin Mould(FURNITUREMOULD) refers to the processing of forming and blank making tools, in addition to shearing mould and dustbin mould. Usually, the dustbin mould consists of an upper mould and a lower mould. The steel plate is placed between the upper die and the lower die to form the material under the action of the press. When the press is opened, the workpiece determined by the shape of the dustbin die will be obtained or the corresponding waste material will be removed.

Basic characteristics:

(1) High machining accuracy requirements

A pair of moulds is generally composed of female mould, male mould and mould base, and some may be multi-piece modules. Therefore, the combination of upper and lower dies, the combination of insert and cavity, and the combination of modules all require high machining accuracy. The dimensional accuracy of precision dies often reaches μ m.

(2) Complex shape and surface

Some product-shaped surfaces are formed by combining various curved surfaces, so the cavity surface of the mould is very complicated. Some curved surfaces must be treated by mathematical calculation.

(3) Small batch size

Mould production is not mass production, in many cases, only one pair is produced.

(4) Many working procedures

Milling, boring, drilling, reaming, tapping and other processes are always used in the manufacturing of the die.

(5) Repeated production

The use of the mould has a long life. When the service life of a pair of moulds exceeds its service life, a new mould must be replaced, so the production of moulds is often repetitive.

(6) Profiling

Sometimes there is neither pattern nor data in the mould production, and copying processing must be carried out according to the actual objects. This requires high imitation precision and no deformation.

(7) Excellent mould materials and high hardness

The main materials of the mould are mostly made of high-quality alloy steel, especially high-life moulds, which are often made of Leroi steel such as Crl2 and CrWMn. This kind of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the compilation of processing technology cannot be ignored even more. Heat treatment deformation is also a problem that needs to be taken seriously in processing.

According to the above-mentioned characteristics, the selection of machine tools should meet the processing requirements as much as possible. For example, the numerical control system has stronger functions, higher precision of machine tools, better rigidity, better thermal stability and profiling functions.

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