Effective low-cost advantage of CNC plasma cutting machine

The application and development of CNC flame cutting machine in the domestic market has experienced the process of hand-held cutting to machine cutting. There are still a certain number of enterprises and users in the two types of plasma cutting methods. However, from the perspective of future market development, machine-use CNC flames The cutting machine is bound to replace the manual cutting method. The CNC flame cutting machine is a kind of precision CNC equipment for plate cutting, which is applied to a variety of small batches of cold plate cutting parts. Through the research and development of small CNC plasma cutting machines and the research of key technologies in the development process, it is CNC flame cutting The serialized development of the machine provides methods and references. The paper analyzes and studies the rigidity, accuracy and reliability of the whole machine under effective working conditions. Ensure the stability of the working performance of the machine tool. According to the control requirements of the machine tool, a new control scheme is proposed, which combines the powerful data processing capability of the industrial PC and the high reliability of the PLC to form the upper and lower machine control systems. According to the motion requirements, the servo motor drive function and The communication function of the upper and lower computers wrote the motion control program, and expanded the I/O of the PLC according to the requirements, and designed the corresponding PLC program. The paper puts forward the construction mode of the co-citation environment, and makes a preliminary study on the application of cost-oriented design in the CNC plasma cutting machine. For the future development of similar series of products, the most effective and low-cost provide parameter basis.　　 There are two ways to form welds: penetration type and perforation type. The former form of plasma arc of H-shaped steel wire only penetrates the base material to form a welding pool, which is mostly used for welding 0.8-3 mm thick plates; the latter form of plasma arc only melts through the plate, forming a keyhole-shaped melting The pool is mostly used for welding 3-12 mm thick plates. In addition, there is a small current micro-beam plasma arc welding, which is especially suitable for welding thin plates of 0.02 to 1.5 mm. Plasma arc welding is a high-quality welding method. The depth/width ratio of the weld is large, the heat-affected zone is narrow, the deformation of the workpiece is small, and there are many types of weldable materials. In particular, the development of pulse current plasma arc welding and molten electrode plasma arc welding has expanded the application range of plasma arc welding.