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Machine tool machining dimensions prediction device, machine tool machining dimensions prediction system, machine tool equipment abnormality determination device, machine tool machining dimensions prediction method, and program

A technology for working machinery and processing dimensions, applied in metal processing equipment, measuring/indicating equipment, metal processing machinery parts, etc., can solve problems such as deviation, and achieve the effect of stable size

Active Publication Date: 2021-01-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there may be deviations between the design size and the actual size of the workpiece due to changes in the state of machinery and tools, deterioration, changes in the working environment, etc.

Method used

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  • Machine tool machining dimensions prediction device, machine tool machining dimensions prediction system, machine tool equipment abnormality determination device, machine tool machining dimensions prediction method, and program
  • Machine tool machining dimensions prediction device, machine tool machining dimensions prediction system, machine tool equipment abnormality determination device, machine tool machining dimensions prediction method, and program
  • Machine tool machining dimensions prediction device, machine tool machining dimensions prediction system, machine tool equipment abnormality determination device, machine tool machining dimensions prediction method, and program

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Experimental program
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Effect test

Embodiment approach 1

[0037] Next, a machining dimension predicting device for a machine tool according to Embodiment 1 of the present invention and an NC machine tool including the machining dimension predicting device will be described with reference to the drawings.

[0038] The machining dimension prediction device 100 for a machine tool according to Embodiment 1 is as follows: figure 1 As shown, there are: a data collection controller 1, which collects NC processing data; a data concentration controller 2, which uses a processing quality prediction model to predict the processing quality of the workpiece; and a data analysis controller 3, which generates processing quality data. predictive model.

[0039] The data collection controller 1 has a data collection unit 10 . The data collection unit 10 is connected to the NC device 7 and the data centralized controller 2 .

[0040] The data collection unit 10 collects NC machining data from the NC device 7 , temporarily stores them, and aggregates...

Embodiment approach 2

[0144] It is also possible to discriminate when to replace the tool based on the machining quality obtained by the machining dimension prediction device 100 . Next, Embodiment 2 which judges the replacement|exchange timing of a tool is demonstrated.

[0145] In this embodiment, the processor 21 of the data centralized controller 2 is such as Figure 8 As shown in , a straight line representing a series of predicted relationships between processing quality and elapsed time is obtained using the least square method or the like.

[0146] The processor 21 specifies the timing at which the curved surface fitting curve including the obtained straight line intersects with the dimensional tolerance, and notifies the timing as the timing of tool replacement.

[0147] Specifically, in the case where the surface fitting curve is a straight line, such as Figure 8 As shown in (A), the reduction in processing quality is proportional to the elapsed time, so at TA, the processing quality i...

Embodiment approach 3

[0154] Next, an equipment abnormality determination device 200 for a machine tool according to Embodiment 3 of the present invention will be described.

[0155] In addition to the function of predicting machining quality, the equipment abnormality determination device 200 also has the function of predicting the equipment replacement time of the tool of the machine tool and determining the abnormality of the equipment.

[0156] Such as Figure 9 As shown, the equipment abnormality determination device 200 of a working machine further includes a working time upper limit storage unit 41 in addition to the data collection controller 1 , the data concentration controller 2 , and the data analysis controller 3 . The operating time upper limit storage unit 41 stores an upper limit value of the tool workload, in other words, a threshold value used as a reference for determining whether to stop using the tool if the value exceeds the value.

[0157] The data collection controller 1 ha...

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Abstract

A machine tool machining dimensions prediction device (100) comprises a data collection unit (10) that obtains drive state information for a machine tool, a feature value extraction unit (211) that extracts feature values from the drive state information, a data analysis unit (311) that analyzes the extracted feature values, and a machining quality prediction model generation unit (312) that generates, from the analyzed information, a prediction model for the machining dimensions of a workpiece. The machine tool machining dimensions prediction device (100) predicts machining quality by applying the feature values and the drive state information to the prediction model during machining of the workpiece and determines whether the machining quality will satisfy standards by referencing machining dimensions quality regulations.

Description

technical field [0001] The present invention relates to a processing size predicting device, a processing size predicting system, a method, a program and a device abnormality judging device of a working machine. Background technique [0002] A machine tool is a machine used to perform processing such as cutting, cutting, and grinding on an object to be processed (worked object). As working machines, milling machines, lathes, drilling machines and the like are known. [0003] Work machinery is mostly automated. An NC (numerical control) machine tool among automated machine tools is a machine tool that processes an object to be machined using an NC machining method. The NC machine tool has an NC device, drives a tool or an object to be processed based on processing operation information, and processes the object to be processed. [0004] NC machine tools are capable of precise machining. However, there may be deviations between the design dimensions and the actual dimensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/09G05B19/4155B23Q17/20
CPCG05B19/406G05B2219/37252G05B2219/32194Y02P90/02B23Q17/0952B23Q17/0995B23Q17/20B23Q2717/006G05B19/41875
Inventor 深津法保石田哲史竹内清史那须督服部佳幸西野万里子
Owner MITSUBISHI ELECTRIC CORP