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Numerical control device, machine learning device, and numerical control method

A numerical control device and machine learning technology, applied in positioning devices, instruments, program control, etc., can solve the problem of longer production changeover time

Pending Publication Date: 2022-06-24
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in a working machine with many tools, if the tool that has reached the end of its life is replaced every time, the working machine will be stopped frequently, and the time for changing the tool due to the stopping of the working machine will be prolonged.

Method used

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  • Numerical control device, machine learning device, and numerical control method
  • Numerical control device, machine learning device, and numerical control method
  • Numerical control device, machine learning device, and numerical control method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0023] figure 1 It is a block diagram schematically showing an example of the functional configuration of the numerical control device according to the first embodiment. The numerical control device 1 is a device that transmits a command for machining an object to be machined, that is, a workpiece to be machined using a tool, to a drive unit 70 that drives a machine tool. A machine tool is a device that can process a workpiece using a plurality of tools. Lathes and machining centers are an example of work machines. The machine tool is provided with a drive unit 70 , and the drive unit 70 is connected to the numerical control device 1 .

[0024] An example of the drive unit 70 is a drive mechanism that drives the tool while rotating the workpiece. As an example, the direction perpendicular to the horizontal plane is the Z axis, the X axis is taken in the horizontal plane, and the direction perpendicular to the X axis and the Z axis is the Y axis. The driving directions of t...

Embodiment approach 2

[0104] Figure 10 This is a block diagram schematically showing an example of the functional configuration of the numerical control device according to the second embodiment. about Figure 10 Among the respective constituent elements, the constituent elements that realize the same functions as those of the numerical control device 1 of the first embodiment are denoted by the same reference numerals, and repeated descriptions are omitted.

[0105] The control arithmetic unit 30 of the numerical control device 1 further includes a machine learning device 50 . The machine learning device 50 includes an observation unit 51 and a learning unit 52 . The observation unit 51 compares the machining program number information (r) in operation, the tool life time T or T' or the tool life time T or T' of each tool before reaching the tool life value stored in the tool life data, which is calculated by the tool life date and time prediction unit 341 . The life count C or C′ is observed ...

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Abstract

A numerical control device (1) is provided with a tool life date / time prediction means (341), a tool replacement date / time prediction means (342), and a prediction information output means (401). A tool life date / time prediction means (341) calculates a tool life value, which is the life of the tool calculated on the basis of the amount of wear, the use time, or the number of times of use of the tool, and the use time or the number of times of use of the tool specified by the machining program included in the operation schedule. Cutter life dates and times are predicted for cutters in the cutter set. A tool replacement date / time prediction means (342) extracts, as a simultaneous replaceable tool, a tool that is permitted to be replaced on the basis of the service life of the other tools in the tool group when the tools in the tool group are machined in accordance with the operation schedule and the tool has reached the tool service life date / time. The prediction information output means (401) displays, on a display unit (20), replacement prediction information including the type of the tool, the life date and time of the tool, and the type of the tool that can be replaced at the same time, for the tool in the tool group.

Description

technical field [0001] The invention relates to a numerical control device, a machine learning device and a numerical control method for predicting the life of a tool of a machine tool. Background technique [0002] Conventionally, the life management of the tool of a machine tool is performed by the numerical control apparatus which controls a machine tool. The numerical control device counts the number of times or the time of use of the tool, and compares it with a preset life value, thereby judging the life of the tool. When it is determined that there is a tool that has reached the end of its life, the numerical control device outputs a warning indicating that the tool has reached its end of life, and the user of the machine tool stops the machine tool and replaces the tool. In addition, in a machine tool having many tools, if the tool that has reached the end of its life is replaced every time, the machine tool is frequently stopped, and the production change time for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/09B23Q3/155B23Q11/00
CPCG05B19/4065B23Q17/0995G05B2219/37252G05B2219/50185
Inventor 嵯峨崎正一本多勇介
Owner MITSUBISHI ELECTRIC CORP