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Health state evaluation method, system and equipment of numerical control machine tool and medium

A technology of health status and CNC machine tools, applied in manufacturing computing systems, data processing applications, instruments, etc., can solve the problems of CNC system failures, inaccurate assessment of the health status of mechanical components, and different operating conditions, so as to avoid serious failures, Realize the effect of predictive maintenance, accurate and real-time health evaluation

Pending Publication Date: 2022-07-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-diagnosis system of the CNC system has a certain diagnostic function, but the diagnostic function is mainly for electrical system faults and CNC system faults, and there is no accurate assessment of the health status of the mechanical components of the CNC machine tool.
Moreover, there are many types of CNC machine tools and different operating conditions. The existing diagnostic system cannot establish a personalized health status assessment method.

Method used

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  • Health state evaluation method, system and equipment of numerical control machine tool and medium
  • Health state evaluation method, system and equipment of numerical control machine tool and medium
  • Health state evaluation method, system and equipment of numerical control machine tool and medium

Examples

Experimental program
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Effect test

Embodiment 1

[0045] like figure 1 As shown, this embodiment provides a method for evaluating the health state of a numerically controlled machine tool, which includes the following steps:

[0046] 1) Obtaining training sample data sets corresponding to several preset working conditions based on the collected historical operation data of the CNC machine tool;

[0047]2) Based on each training sample data set, the model parameters of the health state analysis model are trained and the corresponding likelihood probability is calculated, and each group of model parameters after training is formed into a preset model parameter collection θ that represents different preset working conditions of the machine tool all , compose each likelihood probability into a preset likelihood probability set P 0 ;

[0048] 3) Based on the obtained preset model parameter set θ all and the preset likelihood probability set P 0 , to evaluate the health status of the current CNC machine tools.

[0049] Prefera...

Embodiment 2

[0085] The above embodiment 1 provides a health state evaluation method of a numerically controlled machine tool, and correspondingly, this embodiment provides a health state evaluation system of a numerically controlled machine tool. The system provided in this embodiment can implement the method for evaluating the health state of a numerically controlled machine tool in Embodiment 1, and the system can be implemented by software, hardware, or a combination of software and hardware. For example, the system may include integrated or separate functional modules or functional units to perform corresponding steps in each method of Embodiment 1. Since the system of this embodiment is basically similar to the method embodiment, the description process of this embodiment is relatively simple, and the relevant part may refer to the partial description of Embodiment 1, and the embodiment of the system provided by this embodiment is only illustrative .

[0086] The health state evalua...

Embodiment 3

[0091] This embodiment provides a processing device corresponding to the health state evaluation method of a numerically controlled machine tool provided in this embodiment 1, and the processing device may be a processing device used for a client, such as a mobile phone, a notebook computer, a tablet computer, a desktop computer, etc. , to perform the method of Example 1.

[0092] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. A computer program that can be run on the processor is stored in the memory, and when the processor runs the computer program, the method for evaluating the health state of a numerically controlled machine tool provided in Embodiment 1 is executed.

[0093] In some embodiments, the memory may be a high-speed random access memory (RAM: Random Access Memory), and may also include a non-vol...

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Abstract

The invention relates to a health state evaluation method, system and device for a numerical control machine tool and a medium, and the method comprises the steps: training model parameters of a health state analysis model based on each pre-obtained training sample data set, and calculating a corresponding likelihood probability, forming a preset model parameter set representing different preset working condition states of the machine tool by each group of trained model parameters, and forming a preset likelihood probability set by each likelihood probability; and based on the obtained preset model parameter set and the preset likelihood probability set, evaluating the health state of the current numerical control machine tool. According to the method, the historical monitoring data of the numerical control machine tool is utilized to construct the multi-dimensional data vector, the health state of the numerical control machine tool is evaluated by calculating the health degree, the number of machine tool sensors does not need to be increased, the model has wider practicability, the calculation complexity is reduced, and accurate, rapid and real-time health degree evaluation is achieved; the method can be widely applied to the numerical control machine tool health state monitoring field.

Description

technical field [0001] The invention belongs to the field of health state monitoring of numerically controlled machine tools, in particular to a method, system, equipment and medium for evaluating the health state of numerically controlled machine tools. Background technique [0002] As an important equipment of modern industry, the performance and reliability of CNC machine tools are very important. In order to ensure the service life and production efficiency of CNC machine tools, reasonable maintenance of CNC machine tools is required. The current CNC machine tool maintenance mostly adopts regular maintenance and post-event maintenance, which will reduce the efficiency of the production process and increase the production cost. Therefore, it is an important method to improve production efficiency to accurately monitor the health status of CNC machine tools and give early warning to the failure status of CNC machine tools. [0003] Modern CNC machine tools have built-in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/04
CPCG06Q10/063114G06Q10/06393G06Q50/04Y02P90/30
Inventor 赵永胜蒙杨
Owner BEIJING UNIV OF TECH
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