Numerical control technology has been developed in close combination with machine tool control. In 1952, the first CNC machine tool was introduced, becoming a landmark event in the world mechanical industry and promoting the development of automation. Nowadays, CNC technology, also known as Computerized Numerical Control (CNC), is a technology that uses computers to achieve digital program control. This technology uses computers to perform logical control functions on the movement trajectory of devices and the operation timing of peripherals based on pre stored control programs. Due to the use of computers to replace the CNC devices originally composed of hardware logic circuits, various control functions such as storage, processing, calculation, and logic judgment of input operation instructions can be achieved through computer software. The generated micro instructions are transmitted to the servo drive device to drive the motor or hydraulic execution component to drive the equipment to run.
CNC machine tools automatically process the processed parts according to a pre programmed processing program. We compile the machining process route, process parameters, tool motion trajectory, displacement, cutting parameters (spindle rotation, feed rate, back feed, etc.) and auxiliary functions (tool change, spindle forward rotation, reverse rotation, cutting fluid on/off, etc.) of the parts into a machining program sheet according to the instruction code and program format specified by the CNC machine tool. Then, we record the contents of this program sheet on the control medium (such as magnetic disk, magnetic bubble memory), Then input it into the CNC device of the CNC machine tool to command the machine tool to process parts. The process of generating instructions from part drawings is called the programming of CNC programs. The difference between CNC machine tools and ordinary machine tools in processing parts is that CNC machine tools automatically process parts according to the program, while ordinary machine tools need to be operated by humans. We can achieve the purpose of processing different parts by changing the program that controls the machine tool's action. Therefore, CNC machine tools are particularly suitable for processing small batches of parts with complex shapes and high precision requirements Due to the need for CNC machine tools to process parts according to the program, the programming personnel prepare the program and input it into the CNC device to command the machine tool's work. The input of the program is obtained through the control medium.
Some domestic CNC machine tool manufacturers do not attach enough importance to the improvement of overall process and manufacturing level. The processing methods are mainly ordinary machine tools and inefficient cutting tools, and assembly and debugging are entirely manual. The processing quality cannot be stable and improved under the pressure of production progress. In addition, many domestic CNC machine tool manufacturers still use the original manual ledger management method for production management, resulting in low process level and management efficiency, which makes it difficult for enterprises to form sufficient production scale. For example, foreign machine tool manufacturers are able to produce products on a weekly basis, while domestic production cycles are too long and difficult to control. Therefore, while introducing technology, we should pay attention to strengthening our own process technology transformation and management level improvement.
Due to the rapid development of the CNC machine tool industry, some enterprises, disregarding long-term interests, do not attach enough importance to improving their comprehensive service level, and even lack a true understanding of service. They only focus on sales promotion and do not pay attention to pre-sales and after-sales services. Some personnel dispatched by enterprises lack sufficient understanding of the CNC machine tools they produce, are unable to use or fail to use them properly, and are unable to guide users in using them properly; Some lack basic understanding of advanced and efficient cutting tools and cannot provide good process solutions, which naturally leads to a lack of confidence in the manufacturer among users.
Manufacturers' services should start with studying users' processed products, processes, production types, and quality requirements, helping users select equipment, recommend advanced processes and tools, equip professional training personnel and a good training environment, and help users maximize the benefits of machine tools and process high-quality final products. Only in this way can they gradually gain user recognition and increase the market share of domestic CNC machine tools.
