Automatic positioning laser marking machine is an unfamiliar term to many people. To put it simply, as the name suggests, it literally means a machine that prints marks on the surface of materials and is widely used in various industries. It provides great convenience for our life and work. Nowadays, the times are developing faster and faster, and various office machines and office supplies are becoming more and more automated. 1. Heat processing The principle of heat treatment is laser beam with high energy density. It irradiates the surface of the material to be processed, then the surface of the marking machine absorbs the laser energy, and then performs a thermal excitation process in the irradiated area, so that the material undergoes chemical phenomena such as metamorphosis, melting, ablation, and evaporation to achieve the effect of printing marks. 2. Cold work The cold work principle of the automatic positioning laser marking machine can destroy the chemical bonds in the material or the surrounding medium, so that the material is destroyed by a non-thermal process. This kind of cold processing has special significance in laser marking processing, so it will not cause heating or thermal deformation to the inner layer and nearby areas of the processed surface. In summary, the working principle of the automatic positioning laser marking machine can be divided into two types: thermal processing and cold processing. Machines and equipment with different principles have different uses. In daily life and work, we can choose an automatic positioning laser marking machine that meets our needs, so that the equipment can give full play to its advantages.