Tips of Sheet Metal Fabrication

According to the difference of sheet metal structure, the fabrication process is different. But the total processes are below ways: The ways of blanking are a lot and the main ways are as below.

• Shear: Using shear to cut simple raw material. It is mainly giving preparation for mold blanking. The cost is low and precision is under 0.2, but it can only manufacture strip material or square material without hole and corner cut.
• Punch: Using punch to cut the flat piece which is unfolded on the sheet metal into different sizes of material with one or more steps. The advantage is time short, high efficiency, high precision, low cost, and be suitable for mass production, but need mold design.
• NC blanking. When NC blanking, first, it needs to write the NC process program. Using programming software, writing the drawing into the program that the NC process machine tool can recognize, and making the tool cut different flat pieces in all kinds of sizes on sheet metal by one step and one blade according to this program. But its structure is limited to the blade structure with low cost and the precision is under 0.15.
• Laser blanking. It is used the way of laser cutting. It can cut the sheet metal structure on the large sheet metal and the same as NC blanking, it needs to write a laser program. It can cut all kinds of flat pieces with a complex structure with a high cost and the precision is under 0.1.
• Sawing machine: mainly using aluminum, square tube, figure tube, round bar stock, and so on. Cost and precision are low.
• bench:sink hole,tapping,enlarge hole,drilling