China is a major machine tool manufacturing country in the world today, and CNC systems have made great progress in terms of performance, functionality, complete sets, and applications. Among them, low-end CNC systems have almost completely replaced imports, and mid-range CNC systems have achieved remarkable results in serialization, commercialization and industrialization. High-end CNC systems have achieved breakthroughs in five-axis linkage functions, and have been demonstrated in equipment such as six-axis CNC belt grinders, five-axis blade milling machines, and turning-milling compound machine tools.
For CNC machine tools, the CNC system is like a brain responsible for processing information and controlling the power of the machine tool. When the shape of the part to be processed is irregular, interpolation operations can solve the problem; when the shape of the part is special and the machine tool’s cutting tool cannot cut it, five-coordinate linkage technology comes in handy.
The steel produced in steel mills is not the weird shapes we see in life, but relatively regular-shaped materials such as plates, pipes, ingots, etc. These materials need to be processed into parts of various shapes. Machine tools are required for cutting; some parts that require higher precision and finer surface roughness need to be cut or ground out on machine tools using fine and complicated processes.
Like all machines, the initial machine tool includes a power device, a transmission device and an execution device. The motor rotates to input power, and the transmission device carries the workpiece or tool to be processed for relative movement. As for where to cut, how much to cut, and how much Issues such as fast cutting and so on are directly controlled by humans during the processing process.
Since the speed of the motor used in traditional machine tools is basically constant during operation, in order to achieve different cutting speeds, traditional machine tools have designed extremely complex transmission systems. Machinery of this complexity is rarely seen in today’s designs. With the development of servo motor technology (a servo motor is a motor that can accurately control the position and speed of the motor within a certain range) and its application in CNC machine tools, directly controlling the speed of the motor has become convenient, fast and efficient, and It is basically a stepless transmission, and the structure of the transmission system is greatly simplified. There are even many links where the motor is directly connected to the actuator, while the transmission system is omitted. This “direct drive” model is a major trend in the field of mechanical design.
