Plastic shell processing refers to the processing of plastic molding and plastic blank making tools. It consists of an upper die and a lower die. Its basic characteristics are as follows.
Plastic shell processing refers to the processing of plastic molding and plastic blank making tools. It consists of an upper die and a lower die. Its basic characteristics are as follows
Plastic lithium battery shell
1、 High machining accuracy is required
A plastic shell is generally composed of a concave die, a convex die and a mold base, and some of them can be multi piece split modules. Therefore, the combination of upper and lower die, the combination of insert and cavity and the combination of module all require high machining accuracy. The dimensional accuracy of precision plastic shell often reaches micron level.
2、 The plastic shell material is excellent and has high hardness
The main material of plastic shell is mainly made of high-quality alloy steel, especially the long-life plastic shell, which is usually made of LELAI steel such as Crl2 and CrWMn. This kind of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the establishment of processing technology can not be ignored. Heat treatment deformation is also a serious problem in processing.
3、 Copy processing
In the production of the shell, sometimes there is neither drawing nor data, and the copying process must be carried out according to the actual object. This requires high simulation accuracy and no deformation.
4、 Complex shapes and surfaces
Some products, such as car covers, aircraft parts, toys and household appliances, their formed surfaces are composed of various curved surfaces. Therefore, the cavity surface of the plastic shell is very complex. Some surfaces have to be dealt with mathematically.
5、 Repeat production
The housing has a long service life. When the service life of a pair of shells exceeds its service life, a new plastic shell must be replaced, so the production of the shell is often repeated.
6、 Small batch
The production of plastic shell is not mass production. In many cases, only one pair is produced.
7、 Many processes
Plastic shell manufacturers always use milling, boring, drilling, reaming, tapping and other processes in processing.