CNC grinding machine is an important basic equipment in machine tool manufacturing industry, so its development has been concerned by people. In recent years, China's machine tool manufacturing industry is facing not only the good opportunity of manufacturing equipment development, but also the pressure of market competition. With the rise and application of related technologies. Nowadays, CNC grinding machine is developing in the following directions.

1. Reliability maximization

The reliability of CNC grinding machine is always the main index that users are most concerned about. The numerical control system will adopt circuit chips with higher integration and use large-scale or super large-scale special and hybrid integrated circuits to reduce the number of components and improve the reliability. Through the software of hardware functions, it can meet the requirements of various control functions. At the same time, the modularization, standardization, generalization and serialization of the hardware structure machine tool body are adopted, which not only improves the hardware production batch, but also facilitates the organization of production and quality control. It also realizes fault diagnosis and alarm of hardware, software and various external devices in the system by automatically running various diagnostic programs such as startup diagnosis, on-line diagnosis and off-line diagnosis. Use the alarm prompt to eliminate the fault in time; Using fault-tolerant technology, the important components are designed with "redundancy" to realize fault self recovery; Various testing and monitoring technologies are used to automatically protect against various accidents such as over travel, tool damage, interference and power failure.

2. Miniaturization of control system

The miniaturization of the numerical control system facilitates the integration of mechanical and electrical devices. At present, super large-scale integrated components and multi-layer printed circuit boards are mainly used, and three-dimensional installation method is adopted to enable high-density installation of electronic components and reduce the occupied space of the system on a large scale. The use of a new color liquid crystal thin display to replace the traditional cathode ray tube will further miniaturize the CNC operating system. In this way, it can be conveniently installed on the machine tool equipment, and it is more convenient for the operation of the CNC grinder.

3. Intellectualization

Modern CNC grinding machines will introduce adaptive control technology to automatically adjust the working parameters according to the change of cutting conditions, so as to maintain the best working condition in the machining process, thus obtaining higher machining accuracy and smaller surface roughness, and also improving the service life of tools and the production efficiency of equipment. It has self diagnosis and self repair functions. In the whole working state, the system can self diagnose and inspect the CNC system itself and various equipment connected to it at any time. In case of fault, take measures such as shutdown immediately, and give fault alarm to indicate the location and cause of fault. It can also automatically take the fault module offline and connect the standby module to ensure the requirements of unmanned working environment. In order to achieve higher requirements of fault diagnosis, the development trend is to adopt artificial intelligence expert diagnosis system.

4. NC programming automation

At present, CAD / CAM graphic interactive automatic programming has been widely used, which is a new trend in the development of numerical control technology. It is to automatically generate NC part processing program by using the part processing drawing drawn by CAD, and then calculate and post process the tool path data in the computer, so as to realize the integration of CAD and cam. With the development of CIMS technology, the fully automatic programming mode of CAD / CAPP / CAM integration has appeared again. The biggest difference between it and CAD / CAM system programming is that the machining process parameters required by the programming need not be manually involved, but are directly obtained from the CAPP database in the system.

5. High speed and high precision

Speed and accuracy are two important indexes of CNC grinding machine, which are directly related to machining efficiency and product quality. At present, the numerical control system uses the processor with higher number and frequency to improve the basic operation speed of the system. At the same time, super large scale integrated circuit and multi microprocessor structure are adopted to improve the data processing ability of the system, that is, to improve the speed and accuracy of interpolation operation. And the linear servo feed mode of the machine tool table directly driven by the linear motor has excellent high speed and dynamic response characteristics. Feedforward control technology is adopted to greatly reduce the tracking lag error and improve the machining accuracy of corner cutting.

6. Multifunction

All kinds of machining centers equipped with automatic tool changing mechanism (the capacity of tool magazine can reach more than 100) can simultaneously realize milling, boring, drilling, turning, reaming, reaming, tapping and other processes on the same machine tool. Modern CNC grinding machines also adopt multi spindle and polyhedral cutting, that is, different ways of cutting and processing different parts of a part at the same time. Because the CNC system adopts multi CPU structure and hierarchical interrupt control mode, parts processing and programming can be carried out simultaneously on one machine tool to realize the so-called "foreground processing and background editing". In order to meet the requirements of flexible manufacturing system and computer integrated system, the CNC system has a long-distance serial interface, and can even be networked to realize data communication between CNC grinding machines, and can also directly control multiple CNC grinding machines.

In order to meet the requirements of ultra-high speed machining, the CNC grinding machine adopts the structural form of combining the spindle motor and the spindle of the machine tool, realizing the integration of the frequency conversion motor and the spindle of the machine tool. The bearings of the spindle motor are magnetic bearings, hydrodynamic and static bearings or ceramic rolling bearings.

CNC grinding machine has attracted the world's attention for its excellent flexible automation performance, excellent and stable accuracy, flexible and diversified functions. It has initiated the development of mechanical products to electromechanical integration. Therefore, CNC technology has become a core technology in advanced manufacturing technology. On the other hand, through continuous research, the deepening application of information technology has promoted the further improvement of CNC grinding machines.