(2) Sheet metal processing methods
1, cutting: The blanking is to cut the material […]
The blanking is to cut the material into the desired shape according to the unfolding.
There are many methods for cutting, which can be divided into cutting, punching and laser cutting according to the type and working principle of the machine.
1.1 Shearing - Cut and cut the desired shape with a shearer. Accuracy can reach more than 0.2mm, mainly used for cutting strips or trimming materials.
1.2 Punching and cutting - Cutting with CNC punching machine (NC) or ordinary punching machine. The accuracy of the two cutting methods can reach 0.1mm or more, but the former will have a knife mark and relatively low efficiency when cutting, the latter is high in efficiency, but the single cost is high, suitable for mass production.
1.2.1 When the CNC punching machine is unloaded, it is fixed by the upper and lower molds, and the table moves to punch the sheet to process the required workpiece shape. Our CNC punching machines mainly include Taiwan Lifu and AMADA.
1.2.2 Ordinary punching machine is used to move out the upper and lower molds, and use the blanking die to punch out the required shape of the material. Ordinary punching machines generally have to be matched with the shearing machine in order to punch out the desired shape, that is, after cutting the strips with the shearing machine, the punching machine is used to punch out the desired shape of the material.
1.3 Laser cutting - The laser cutting equipment is used to continuously cut the sheet to obtain the desired shape of the material. It is characterized by high precision and the ability to add tools with very complex shapes, but the processing costs are relatively high.