Research and Development of CNC Machine Tool Maintenance and Fault Analysis Software Wang Hongjun, Zhou Zhifeng Department of Mechanical Engineering, Beijiao Machinery Industry College, Beijing 185. Abstract In order to reduce the downtime of CNC machine tools and improve the maintenance level of CNC machine tools. Self-developed and developed CNC machine tool maintenance and fault analysis software. The software adopts object-oriented design method, establishes a lively and friendly human-machine interface, realizes document management fault search, and provides equipment management for Fangzhang factory. On-site equipment home repair management CNC machine tool electrical failure mode and residence time statistics and other major functions. Its good openness provides the basis for further development and utilization.
4 CNC machine tools are the material basis for the integration of manufacturing flexible calculators in the manufacturing industry. With the development of China's economy, CNC machine tools have been widely adopted by enterprises to improve production efficiency. At present, the number of CNC machine tools in China has increased rapidly, and many foreign CNC machine tools have been imported. From the perspective of application and production in China's numerical control system, in the promotion and application of Hejiu, some industries in China that introduce more advanced foreign equipment are more concentrated in the implementation of good management equipment for CNC machine tools. Many companies spare no effort in personnel training and development of new technology applications. At present, China's manufacturing industry has a considerable number of CNC machine tools at three levels. At the highest level.
In addition to less, the domestic high-end CNC system, mainly from the world's 17 countries and regions into the full-featured high number of equipment, equipment for the main; in the middle and low-end. Mainly in both aspects. Both foreign and domestic are introduced in the lower order.
Then take the domestic single-board towel. The popular CNC system consisting of a chip machine or a 1 bus machine plus a stepping motor is the upper body. before.
Imported CNC machine tools have exceeded the one-year warranty period and entered the accidental failure period of the Lime machine tool. In the event of a downtime, not only the expensive maintenance fees of foreign experts but also the production and profits of the company are seriously affected. In order to reduce the downtime of CNC machine tools, improve the maintenance level of CNC machine tools, the key research of hydrology, the fault form of cots and the corresponding solutions, based on the boundary 3 platform, ∈, é¼—, å‚, 㚠收收收治治龅, = = 1 overall design At present, China's widely used CNC machine ice includes CNC car ice. Number, number of washing machines, grinding machine. CNC electric machining bed plus, center and other machine. The CNC system adopted includes the old system of the child system 3 and so on. In view of this situation, the software selects CNC lathes, controlled milling machines, controlled grinding machines, machining centers and other kinds of machine tools for the research object to use Shenshen system and SMENS numerical control system, and conducts research, analysis and research with reference to a large number of control machine tools. The research content is to collect and organize the information of CNC machine tools; to determine the knowledge and rules of CNC machine tools; to establish fault analysis blocks. The overall design framework of the software 1.
2 Main functions The system adopts the human-computer interaction mode, which can realize the file management fault query and provide the technical support of the solution, the knowledge acquisition of the fault library and the knowledge base, and the main functions of the rule library analysis and maintenance time statistics.
2.1 CNC machine maintenance knowledge module This module includes the contents and methods of routine maintenance of CNC machine tools, and knowledge of CNC machine tool fault diagnosis methods. The lively interface is used to provide on-site operators with detailed technical support for the daily maintenance of CNC machine tools and technical training on CNC machine tool fault diagnosis methods. The way the tree catalog is viewed makes it easy for users to use.
2.2 Mechanical fault inquiry module Because the fault occurs often in the field, it is often described by some kind of result and phenomenon. This module starts from the convenience and practicality, and uses the fault phenomenon as the viewing key. The fault of the mechanical part is inquired according to the type of machine tool, such as CNC lathe CNC milling machine, CNC grinder surface grinder and cylindrical grinder machining center. The lower layers of each class are roughly divided into two aspects of fault processing accuracy and processing quality. Because the fault phenomenon of CNC machine tools is more complicated, it is difficult to describe it in a more regular language. Therefore, the tree view is selected and the query is made down layer by layer. The use of tree controls is psychologically friendly to the user and is more convenient to use. In addition, this facilitates the organization of the fault library and the knowledge base, and through the layered layer development of the tree directory, the fault library can be divided into numerical control lathe CNC lathe CNC grinding machine processing center and other data ghosts each containing several files; knowledge base It is divided into four databases, such as CNC machine tool overview and CNC machine tool maintenance method. Each database contains several files, so the database organization is clear and organized.
Through the tree directory, you can quickly and easily view the fault phenomenon you want to view and then call the corresponding maintenance method database, analyze the cause of the fault, and provide a solution at the same time; use the file management function menu to print these contents.
2.3 Knowledge Base Management The fault of CNC machine tools is complex. In order to better provide technical support for users, this module provides users with good interactive performance. Users can add their own successful experience to the fault library and knowledge base by filling out the form. It also allows the user to delete the knowledge that he does not need. The user can fill in and delete the library by filling in the items one by one.
2.4 Enterprise Equipment Management Module Nowadays, the equipment management of some enterprises has not been computerized. This module provides users with computer equipment management and maintenance management. It can easily realize the two-view printing and adding of enterprise equipment information and equipment maintenance records through the form of grid. delete. Equipment management includes equipment name, model purchase date, use unit, manufacturer purchase price, and other items. Enterprise equipment repair includes the name of the equipment. Model shoulder, price CNC machine tool and fault analysis software fault cheek statistician fault name maintenance method repair cost maintenance unit repair time and other items.
In order to provide a better solution to the problem, the module provides a solution for the electrical system of the 31-leg 1 system and some examples of faults. The number of each shape is in the maintenance plan and is numbered. Perform 2.6 electrical system failure electrical system fault package servo system fault sense component failure, etc., 2.7 failure mode statistics 2 The module has passed the statistics of the set-up maintenance report. The form of 1 is used to calculate the frequency of failures and the frequency of failures during a specific maintenance period. It is used to analyze the maintenance intervals of maintenance intervals of CNC machine tools used by enterprises. Provide technical support for the company's planned maintenance and quasi-valley spare parts, and at the same time, through the analysis of the failure mode, propose improvements for the CNC machine swimming production plant.
3 object-oriented design Object-oriented method is object-centric, each of its objects can be an independent test, its data can be encapsulated and inherited, data security. The inheritance of the parent class by the subclass improves the reusability of the information and simplifies the design.
For development tools, hybrid programming has developed a CNC machine tool maintenance and fault analysis software system for the field. This system adopts the method of man-machine transfer. Through the tree type to realize the inspection of the fault knowledge, the form of the slave order realizes the addition of the fault library knowledge base, and provides the user with timely help function.
The system uses a pull-down dish, and a pop-up dish 1 pull-down menu for the factory to select the function shuttle block. The menu is popped up after the function block is selected, and the slave is added to the 19 frame. 5., 61.; 1.1 technology, 31 technology is currently relatively stream. It embodies the advanced technology of Cheng Jin design, the page technology, can design the lively and lively pages, and make the software interface lively and friendly.
In the design of the shape library, the hyperlink technology is adopted. The main reasons for adopting this technology are as follows.
0 hyperlink technology can easily realize any connection with any 13 addresses of any website and any file under the folder of wooden hard disk. 4 The developed software can be used to provide human-machine interface friendly technical training for operators. Providing technical solutions for maintenance greatly shortens downtime and reduces the losses of production enterprises, and has good economic benefits. At the same time, by using this software, it is possible to computerize the management of the factory. The service report that greets the soft raft can count the equipment maintenance situation of the factory, analyze the fault mode and the time period of the occurrence, and provide a theoretical basis for the factory pre-repair.
Because the total control module of the system achieves the modular design style better, it has the typical structure of the bed for the expansion and perfection of the function, and can perform the dynamic performance of the plane or the stereo, and assist the voice to speak.觚 So that machine tool users and maintenance personnel can learn or repair. , increase the function of the fault instance library. In addition, with the increase of Internet users, it should be developed into a network version, providing better technical support for the majority of CNC machine users.
1 Zheng Guowei. The development of the status quo of CNC machine tools in China and the management and maintenance of the management equipment of existing CNC machine tools. 1999 2 Jia Zhixin, Xia Jiqiang, Jia Asia. The electrical system failure mode of the CNC lathe is divided into Knife. Machine and hydraulic, 20001 connected to 14 pages
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