Real-time regulation and control expert system for whole free forging process of shaft forgings, design method and application method
An expert system, real-time control technology, applied in general control system, control/regulation system, program control and other directions, can solve the problems of large quality fluctuation range, unstable forging quality, many influencing factors, etc., to solve the problem of poor product consistency. Effect
Active Publication Date: 2022-01-28
HARBIN INST OF TECH
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Problems solved by technology
The production efficiency of manual free forging production method is low, and the degree of mechanization and automation still needs to be improved
The free forging process often requires multiple forging passes, and the shape and size of the forgings are affected by manual operations, resulting in unstable quality and poor consistency of forgings
Aviation shaft forgings have high requirements for product consistency and reliability, which cannot be met by traditional manual free forging.
[0003] For this reason, automatic forging research has been carried out at home and abroad, but most of the research is limited to the automation of blank blanking, heating, die forging, edge trimming and finishing. There are few researches on free forging of shaft forgings, and it is difficult to realize the above-mentioned Target
Compared with the die forging process, the drawing length of free forging has more influencing factors, the process is complex, the operation stability is poor, and the quality fluctuation range is large. There may be dimensional deviations in the forging process that need to be adjusted in real time. Simple automation is difficult to obtain consistent and reliable results. Shaft forgings, so it is necessary to carry out intelligent forging research and real-time control during the forging process
The key to intelligent free forging lies in the establishment of an expert system that can realize real-time control of the whole process of free forging, and the construction of an expert system requires a large amount of simulation and experimental data, and the establishment of related algorithms. There is little research on the intelligent forging expert system of the free forging process in China
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[0039] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments:
[0040] The use of traditional manual elongation relies on the experience of the process planners, and the process parameters are difficult to guarantee, and defects such as axis bending and surface cracks are prone to occur, resulting in poor product consistency and low pass rate. figure 1 is a folding defect in the transition zone, figure 2 is the axis bending defect, image 3 It is the end face crack defect.
[0041] combine Figure 6 Description, a real-time control expert system for the whole process of free forging of shaft forgings, the expert system has a data query function module and a forging production function module; the data query function module stores process information, equipment information, forging information, mold tooling information, Optimize process plan and material parameter data; fo...
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Abstract
The invention discloses a real-time regulation and control expert system for the whole free forging process of shaft forgings, a design method and an application method. The design method comprises the steps of: determining a free forging process scheme; 2, constructing an intelligent decision algorithm; 3, designing an expert system; 4, constructing a free forging process library and a knowledge library of the shaft forgings; and 5, combining the intelligent decision algorithm and the knowledge library, and building a real-time regulation and control expert system for the whole free forging process of the shaft forgings. The application method comprises the following steps of: 1, embedding the expert system into an upper computer, and making the expert system communicate with a PLC, a forging robot and a detection robot; 2, performing pre-forging detection; 3, performing free forging and whole-process real-time optimization; and 4, performing post-forging detection, and recording the time of the whole free forging process, detecting finish forging temperature, and checking the shape, size and structure performance of a forging. According to the real-time regulation and control expert system for the whole free forging process of the shaft forgings, the design method and the application method, the free forging process of the shaft forgings can be regulated and controlled in real time.
Description
technical field [0001] The invention relates to the technical field of forging quality control, in particular to a real-time intelligent control expert system, design method and application method for the whole process of free forging of shaft forgings. Background technique [0002] Shaft forgings are key force-bearing parts of rotating bodies used to transmit torque or motion. They are widely used in aviation, aerospace, ships and other fields, and their forming is generally artificial free forging. The production efficiency of the artificial free forging production method is low, and the degree of mechanization and automation still needs to be improved. The free forging process often requires multiple forging passes, and the shape and size of the forgings are affected by manual operations, resulting in unstable quality and poor consistency of forgings. Aviation shaft forgings have high requirements for product consistency and reliability, which cannot be met by traditiona...
Claims
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IPC IPC(8): B21K1/06B21J5/06G05B19/05
CPCB21K1/06B21J5/06G05B19/054
Inventor 袁林徐书聪单德彬
Owner HARBIN INST OF TECH