Sheet metal, a processing process, sheet metal has not yet a relatively complete definition. According to a definition in a foreign professional journal, it can be defined as: sheet metal is for metal sheet (usually below 6mm) a comprehensive cold processing process, including shear, punching/cutting/composite, folding, riveting, splicing, forming (such as car body), etc.. Its remarkable feature is the same thickness of the same part. Sheet metal has the characteristics of light weight, high strength, electric conductivity (can be used for electromagnetic shielding), low cost, good mass production performance, etc., in electronic appliances, communications, automotive industry, medical equipment and other fields have been widely used, such as in computer cases, mobile phones, MP3, sheet metal is an essential part. With the application of sheet metal more and more widely, sheet metal parts design has become a very important part of the product development process, mechanical engineers must master the design skills of sheet metal parts, make the design of sheet metal not only meet the function and appearance of the product requirements, but also make the stamping die manufacturing simple, low cost.Most laser cutting machines are controlled by CNC programs or made into cutting robots. Laser cutting as a precision processing method, almost all materials can be cut, including thin metal plate two-dimensional cutting or three-dimensional cutting. Laser cutting forming technology is also widely used in the field of non-metallic materials. Can not only cut high hardness, brittle materials, such as silicon nitride, ceramics, quartz, etc.; It can also cut and process flexible materials, such as cloth, paper, plastic board, rubber, etc., such as clothing cutting with laser, can save 10% ~ 12% of clothing material, improve the efficacy of more than 3 times.