JP2017077618A5 - - Google Patents
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- JP2017077618A5 JP2017077618A5 JP2015218880A JP2015218880A JP2017077618A5 JP 2017077618 A5 JP2017077618 A5 JP 2017077618A5 JP 2015218880 A JP2015218880 A JP 2015218880A JP 2015218880 A JP2015218880 A JP 2015218880A JP 2017077618 A5 JP2017077618 A5 JP 2017077618A5
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- 238000001228 spectrum Methods 0.000 claims 7
- 230000001133 acceleration Effects 0.000 claims 6
- 238000003754 machining Methods 0.000 claims 4
Claims (2)
前記加工工具の回転数、刃数及び固有振動数を入力する工程と、
加工時の前記加工工具又は前記ワークの振動をフーリエ級数展開により解析した周波数と加速度とからなる周波数スペクトルを得る工程と、
前記回転数及び前記刃数から算出された工具通過周波数でのピーク加速度であるＴＰＦピークが、前記周波数スペクトルに予め設定された前記工具通過周波数のピーク閾値であるＴＰＦ閾値と比較され、前記ＴＰＦピークが前記ＴＰＦ閾値を越えた回数を、ＴＰＦ閾値越え積算表示部に表示させる工程と、
前記固有振動数でのピーク加速度であるｆ０ピークが、前記周波数スペクトルに予め設定された前記固有振動数のピーク閾値であるｆ０閾値と比較され、前記ｆ０ピークが前記ｆ０閾値を越えた回数を、ｆ０閾値越え積算表示部に表示させる工程と、
ＴＰＦ閾値越え回数とｆ０閾値越え回数とを比較して変化表示部に表示させる工程と、
を有することを特徴とする作業機械の加工状態監視方法。A processing state monitoring method for a working machine for monitoring a processing state by the processing tool when the processing tool or the workpiece rotates to perform processing on the workpiece through the processing tool,
Inputting the number of rotations, the number of blades and the natural frequency of the processing tool;
Obtaining a frequency spectrum composed of a frequency and acceleration obtained by analyzing the vibration of the machining tool or the workpiece during machining by Fourier series expansion;
A TPF peak that is a peak acceleration at a tool passing frequency calculated from the number of rotations and the number of blades is compared with a TPF threshold that is a peak threshold of the tool passing frequency preset in the frequency spectrum, and the TPF peak Displaying the number of times the TPF threshold value is exceeded on the TPF threshold value exceeding integration display unit;
The f0 peak that is the peak acceleration at the natural frequency is compared with the f0 threshold that is the peak threshold of the natural frequency preset in the frequency spectrum, and the number of times the f0 peak exceeds the f0 threshold is calculated as follows: a step of displaying on the f0 threshold value exceeding display unit;
Comparing the number of times the TPF threshold has been exceeded with the number of times the f0 threshold has been exceeded, and causing the change display unit to display the result,
A processing state monitoring method for a work machine, comprising:
前記加工工具の回転数、刃数及び固有振動数を入力する入力設定部と、
加工時の前記加工工具又は前記ワークの振動をフーリエ級数展開により解析した周波数と加速度とからなる周波数スペクトルを表示する周波数スペクトル表示部と、
前記回転数及び前記刃数から算出された前記工具通過周波数でのピーク加速度であるＴＰＦピークが、前記周波数スペクトルに予め設定された前記工具通過周波数のピーク閾値であるＴＰＦ閾値と比較され、前記ＴＰＦピークが前記ＴＰＦ閾値を越えた回数を表示させるＴＰＦ閾値越え積算表示部と、
前記固有振動数でのピーク加速度であるｆ０ピークが、前記周波数スペクトルに予め設定された前記固有振動数のピーク閾値であるｆ０閾値と比較され、前記ｆ０ピークが前記ｆ０閾値を越えた回数を表示させるｆ０閾値越え積算表示部と、
ＴＰＦ閾値越え回数とｆ０閾値越え回数とを比較して表示させる変化表示部と、
を備えることを特徴とする作業機械の加工状態監視システム。A working state monitoring system for a work machine for monitoring a working state by the working tool when the working tool or the work rotates to perform the work processing on the work through the working tool;
An input setting unit for inputting the number of rotations, the number of blades and the natural frequency of the processing tool;
A frequency spectrum display unit for displaying a frequency spectrum composed of a frequency and acceleration obtained by analyzing the vibration of the machining tool or the workpiece at the time of machining by Fourier series expansion;
A TPF peak that is a peak acceleration at the tool passing frequency calculated from the number of rotations and the number of blades is compared with a TPF threshold that is a peak threshold of the tool passing frequency preset in the frequency spectrum, and the TPF A TPF threshold value overrun display section for displaying the number of times the peak has exceeded the TPF threshold value;
The f0 peak that is the peak acceleration at the natural frequency is compared with the f0 threshold that is the peak threshold of the natural frequency preset in the frequency spectrum, and the number of times that the f0 peak exceeds the f0 threshold is displayed. An f0 threshold value overrun display section to be made;
A change display section for comparing and displaying the number of times the TPF threshold is exceeded and the number of times the f0 threshold is exceeded;
A working state monitoring system for a work machine, comprising:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015218880A JP6575814B2 (en) | 2015-10-20 | 2015-10-20 | Process state monitoring method and system for work machine |
| PCT/JP2016/082499 WO2017069290A1 (en) | 2015-10-20 | 2016-10-17 | Method and system for monitoring work state of operating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015218880A JP6575814B2 (en) | 2015-10-20 | 2015-10-20 | Process state monitoring method and system for work machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017077618A JP2017077618A (en) | 2017-04-27 |
| JP2017077618A5 true JP2017077618A5 (en) | 2019-08-15 |
| JP6575814B2 JP6575814B2 (en) | 2019-09-18 |
Family
ID=58557594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015218880A Active JP6575814B2 (en) | 2015-10-20 | 2015-10-20 | Process state monitoring method and system for work machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6575814B2 (en) |
| WO (1) | WO2017069290A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7084242B2 (en) | 2018-07-30 | 2022-06-14 | Dmg森精機株式会社 | Tool blade number estimation device and machine tools equipped with it, and tool blade number estimation method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6718107B2 (en) * | 2016-09-28 | 2020-07-08 | エヌティーエンジニアリング株式会社 | Vibration monitoring method and system for work machine |
| JP2020055052A (en) * | 2018-09-28 | 2020-04-09 | シチズン時計株式会社 | Machine tool and activating method for the same |
| JP7058210B2 (en) * | 2018-12-10 | 2022-04-21 | Dmg森精機株式会社 | Machine tools, defect detection methods, and defect detection programs |
| JP6944102B2 (en) * | 2019-10-18 | 2021-10-06 | エヌティーエンジニアリング株式会社 | Machining status monitoring method and system for work machines |
| JP6944103B2 (en) * | 2019-10-22 | 2021-10-06 | エヌティーエンジニアリング株式会社 | Machining status monitoring method and system for work machines |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5732325B2 (en) * | 2011-06-16 | 2015-06-10 | オークマ株式会社 | Vibration discrimination method and vibration discrimination apparatus |
| JP5807437B2 (en) * | 2011-08-10 | 2015-11-10 | 株式会社ジェイテクト | Chatter vibration detector |
| JP5288318B1 (en) * | 2012-10-23 | 2013-09-11 | エヌティーエンジニアリング株式会社 | Chatter control method for work machines |
| JP2014140918A (en) * | 2013-01-23 | 2014-08-07 | Hitachi Ltd | Cutting vibration inhibition method, arithmetic control device, and machine tool |
| KR102191166B1 (en) * | 2013-06-10 | 2020-12-16 | 두산공작기계 주식회사 | Setting method of revolutions per minute on the real time of a spinning cutting tool, and the control device |
| JP2016083759A (en) * | 2014-10-28 | 2016-05-19 | エヌティーエンジニアリング株式会社 | Processing state monitoring method and system for work machine |
-
2015
- 2015-10-20 JP JP2015218880A patent/JP6575814B2/en active Active
-
2016
- 2016-10-17 WO PCT/JP2016/082499 patent/WO2017069290A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7084242B2 (en) | 2018-07-30 | 2022-06-14 | Dmg森精機株式会社 | Tool blade number estimation device and machine tools equipped with it, and tool blade number estimation method |
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