The closed-loop system is a system that monitors the position, speed, force and other parameters in the machining process through sensors in real time, and feedbacks these information to the CNC system for real-time adjustment. The closed-loop system ensures machining accuracy and stability and improves machining quality. It is similar to the human nervous system, which can sense and adjust the motion of the machine tool in time. The commonly used sensors in closed-loop systems include encoders, displacement sensors and force sensors.
Open-loop system is the exponential control system only according to the preset program for motion control, there is no real-time feedback to adjust the machine tool motion state. The open-loop system is similar to the human muscle system, which can only move according to preset actions, and cannot sense and adjust its own state. The open-loop system is suitable for some machining tasks with low precision requirements, such as simple drilling and milling.
Closed loop system and open loop system have advantages and disadvantages, according to the different machining tasks, you can choose the suitable CNC system. The closed-loop system can improve machining accuracy and stability, and is suitable for tasks requiring high machining quality. The open-loop system is more simple and convenient, and is suitable for some simple processing tasks.
All in all, the CNC system of CNC machine tools is classified into closed-loop system and open-loop system. The closed-loop system monitors and adjusts the motion state of the machine tool through the sensor in real time to improve the machining accuracy and stability; The open-loop system can only control the motion according to the preset program, which is suitable for some simple machining tasks. According to the different machining tasks, the suitable CNC system can be selected to improve the processing efficiency and quality.
CNC machine tool CNC system brand can be divided into two categories of domestic brands and international brands.
Domestic brands refer to CNC system manufacturers with a certain influence in the domestic market, and they have made certain achievements in CNC technology research and development and manufacturing. The CNC system of domestic brands has high cost performance and adaptability, and can meet the needs of the domestic market. Common domestic brands include Huazhong numerical control, Guangdong numerical control, Shenyang machine tools and so on.
International brands refer to CNC system manufacturers that enjoy a high reputation and market share in the international market. They have a leading edge in CNC technology research and development and product quality to meet the needs of the global market. International brands of CNC systems usually have higher accuracy, stability and reliability. Common international brands include Siemens, Famac, Haas and so on.
Domestic brands and international brands have their own advantages and characteristics. Domestic brands have high cost performance and adaptability, suitable for some small and medium-sized enterprises and low-end markets; The international brand has higher accuracy, stability and reliability, which is suitable for some high-end markets and enterprises with high processing quality requirements.
All in all, the CNC machine tool CNC system brand can be divided into domestic brands and international brands. Domestic brands have higher cost performance and adaptability, while international brands have higher accuracy, stability and reliability. According to the needs and budget of the enterprise, the suitable brand of CNC system can be selected to improve the processing efficiency and quality.