How Many Development Trends Does CNC Machining Center Equipment Have in The Future?
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The CNC machining center is a high-efficiency automated machine tool that is composed of mechanical equipment and a CNC system and is suitable for complex parts. It has a strong comprehensive ability, which concentrates the functions of milling, boring, drilling, thread tapping and thread cutting on one device, so that it has a variety of technological means. With the continuous development of the world’s advanced manufacturing technology, the application of ultra-high-speed cutting, ultra-precision machining and other technologies, the rapid development of flexible manufacturing systems and the continuous maturity of computer integrated systems, higher requirements are placed on CNC machining technology. The future of CNC machining The central equipment will develop towards the following trends:
1. Complex and diversified functions
All kinds of machining centers equipped with automatic tool changers can simultaneously realize milling, boring, drilling, turning, reaming, reaming, tapping and other processes on the same machine tool. It also uses multiple spindles, Polyhedron cutting, that is, cutting different parts of a part in different ways at the same time. Because the CNC system adopts the hierarchical interrupt control method, part processing and programming can be performed on one machine tool at the same time. In order to meet the requirements of flexible manufacturing systems and computer integrated systems, the CNC system has a long-distance serial interface and can even be networked. Realize data communication between machining centers, and can also directly control multiple CNC milling machines.
2. Ultra-high and ultra-precision
Speed and accuracy are two important indicators of data processing centers, which are directly related to processing efficiency and product quality. At present, the numerical control system uses a processor with a higher number of bits and a higher frequency to increase the basic operation speed of the system. At the same time, the use of ultra-large-scale integrated circuits and multi-microprocessor structures to improve the system's data processing capabilities, that is, to improve the speed and accuracy of interpolation operations. In addition, the linear servo feed mode of the machine tool table is directly driven by a linear motor, and its high speed and dynamic response characteristics are quite superior. The CNC milling machine will also adopt a structure in which a spindle motor and a machine tool spindle are combined into one, which realizes the integration of a frequency conversion motor and a machine tool spindle. The bearings of the spindle motor use magnetic bearings, hydrodynamic and hydrostatic bearings or ceramic rolling bearings.
3. intelligent
Modern CNC milling machines will introduce adaptive control technology to automatically adjust working parameters according to changes in cutting conditions, so that the best working conditions can be maintained during the machining process, thereby obtaining higher machining accuracy and smaller surface roughness, and at the same time. Improve tool life and equipment production efficiency. In the whole working state, the system conducts self-diagnosis and inspection on various connected devices at any time. In the event of a failure, measures such as shutdown shall be taken immediately, and a failure alarm shall be issued to indicate the location and cause of the failure. It can also automatically take the faulty module offline and switch on the spare module to ensure the requirements of an unmanned working environment. In order to achieve higher fault diagnosis requirements, its development trend is to adopt artificial intelligence expert diagnosis systems.
4. Standardization of cutting tools and lubrication system
At present, the models of machining centers are different, and the machining tools and lubrication systems are also different. In the future, with the continuous progress of the independent processing of machining center equipment, processing tools will also tend to be standardized. The machining center equipment only needs to replace the tools that meet the standards according to its own needs to complete the process. The matching lubrication system will automatically cut the metal processing oil used in different processes to meet the process requirements. At this stage, cutting tools are developing in the direction of ultra-hard composite materials, and metal processing oils with vulcanized additives as the main component have also obtained key technological breakthroughs.
5. Miniaturization of the control system
The miniaturization of the numerical control system facilitates the integration of mechanical and electrical devices. Currently, ultra-large-scale integrated components, multilayer printed circuit boards are mainly used, and three-dimensional installation methods are adopted to enable high-density installation of electronic components and reduce the space occupied by the system on a larger scale. The use of a new type of color liquid crystal thin display to replace the traditional cathode ray tube will further miniaturize the numerical control operating system. In this way, it can be easily installed on the machine tool equipment, which is more convenient for the operation and use of the machining center.