The development trend of machine tool numerical control system (2)

An ultra-thin display (9.5in EL and 10.4in color LCD) is used. The system's small line segment processing capacity is increased to 64m / min, the maximum rapid feed rate is 240m / min, its synchronous tapping accuracy is three times higher than the M310, and the spindle positioning time is reduced by 30%. The latest SINUMERIK 840D main control unit from SIEMENS in Germany uses 386DX or 486DX, with 1~4 channels, which can realize linear and circular interpolation, spiral interpolation, 5-axis spiral interpolation and spline interpolation, and cylinder. Interpolation, etc., can control 32 axes, and has a variety of correction and compensation functions, the volume is only 50mm × 316mm × 207mm.

3. Improve human-machine interface for user convenience

In order to make it easy for the operator to master the operation of CNC machine tools, CNC equipment manufacturers strive to improve the man-machine interface, simplify programming, and use dialogue as much as possible to make the user easy to use, such as the FAGOR 8050 series produced by FAGOR of Spain. The editing program guides the system, simplifies the editing of the program, edits the program with a brief form, and builds the program using the blueprint. Its 8050TC CNC system is called high-grade fool type CNC system (FAGOR800 series CNC system). Its operation panel uses symbol keys. Users can select the machining program according to the required machining parts. After inputting the graphic data, semi-automatic can be realized. Or fully automatic processing. If the various automatic operations on the panel are not selected, the CNC system only displays the position value of the coordinate axis and the spindle speed. The operator can manually operate each axis of the machine with a joystick or an electronic handwheel. Convenience.

4. Improve the completeness of CNC system products

The numerical control system includes a CNC device, a spindle and a feed servo drive, as well as a spindle motor, a feed motor and its associated feedback feedback elements. The performance of a CNC system is closely related to the performance of each of the above links. In order to meet the needs of machine tool users, CNC equipment manufacturers attach great importance to the complete set of CNC products, so that all aspects of the system can be well matched, so that users get the best results.

For example, FANUC Corporation of Japan developed an economical O-TD and O-MD CNC device, and developed an economical αC series flow-effect servo motor and control system. OKUMA, a traditional machine tool factory, now develops, manufactures and sells CNC systems. As a machine tool factory, it produces CNC systems, so it pays more attention to mechatronics and product sets. The company's production of CNC system in the software combined with the mechanical processing requirements, the hardware also developed its own absolute position encoder, brushless servo motor, AC spindle motor, grating ruler and other components, while also providing machine control panel and control cabinet Automatic programming device to provide users with turnkey projects.

5. Research and development of intelligent CNC systems

The so-called intelligent CNC system has been studied since the early 1980s. At that time, the FS15 series introduced by FANUC was called the AI ​​(Artificial Intelligence) CNC system, mainly using an expert system for fault diagnosis. The system uses so-called inference software to analyze and find the cause of the failure based on the experience of the knowledge base stored in the system. Recently, FANUC is carrying out the so-called 21st century-oriented project, IMS (Intelligent Manufacturing Systems), which will seamlessly combine the know-how of the world's skilled workers into the production system.

With the development of industrial technology, the manufacturing process is required to be faster and easier to adapt to production needs, and a technology called Intelligent Closed-Loop Processes (ICLP) is adopted. This technology uses sensors to obtain timely information to enhance the manufacturer's ability to get the best products.

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