JPS5720625A - Detection of tool chipping - Google Patents
Detection of tool chippingInfo
- Publication number
- JPS5720625A JPS5720625A JP9558080A JP9558080A JPS5720625A JP S5720625 A JPS5720625 A JP S5720625A JP 9558080 A JP9558080 A JP 9558080A JP 9558080 A JP9558080 A JP 9558080A JP S5720625 A JPS5720625 A JP S5720625A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- chipping
- output
- vibration
- frequency spectra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
PURPOSE:To improve the sureness in the detection of chipping without being restricted by conditions of cutting tools and work pieces by detecting tool chipping from the shapes of the frequency spectra of the vibration of a tool rest. CONSTITUTION:The output of an acceleration pickup 12 is amplified by a charge amplifier 13, and is applied to an AD converter 18 via a 1/3 octave band pass filter, a logarithmic compressor 15, a rectifier circuit 16 and a smoothing circuit 17. The output of the AD converter 18 and the signal from an interface part 19 are applied to the input of a comparator 21, by which the steady cutting state by full band vibration levels is judged. When the state is judged to be a steady cutting state, the output is fed to a vibration frequency spectrum calculating circuit 22. In the circuit 22, vibration frequency spectra are determined and are outputted to a buffer circuit 23, by which frequency spectra are accumulated. In the comparator 24 connected to a buffer circuit 23, a reference data memory device 27 and a set value table memory device 28, the presence or absence of chipping by the comparison with the reference data is decided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9558080A JPS5720625A (en) | 1980-07-15 | 1980-07-15 | Detection of tool chipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9558080A JPS5720625A (en) | 1980-07-15 | 1980-07-15 | Detection of tool chipping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5720625A true JPS5720625A (en) | 1982-02-03 |
| JPS6121787B2 JPS6121787B2 (en) | 1986-05-28 |
Family
ID=14141525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9558080A Granted JPS5720625A (en) | 1980-07-15 | 1980-07-15 | Detection of tool chipping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5720625A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963529A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| JPS5963528A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| JPS59175942A (en) * | 1983-03-23 | 1984-10-05 | Agency Of Ind Science & Technol | Rms processing unit in cutting edge damage detecting device for intermittent cutting machine |
| JPH1183618A (en) * | 1997-09-04 | 1999-03-26 | Toshiba Corp | Acoustic monitoring device |
| JP2016135511A (en) * | 2015-01-23 | 2016-07-28 | 三菱電機株式会社 | Irregular machining detecting apparatus and irregular machining detecting method |
| WO2019044729A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | State-monitoring method and state-monitoring device |
| JP2019045484A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method, and state monitoring device |
-
1980
- 1980-07-15 JP JP9558080A patent/JPS5720625A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963529A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| JPS5963528A (en) * | 1982-10-01 | 1984-04-11 | Ishikawajima Harima Heavy Ind Co Ltd | How to diagnose rotating machinery |
| JPS59175942A (en) * | 1983-03-23 | 1984-10-05 | Agency Of Ind Science & Technol | Rms processing unit in cutting edge damage detecting device for intermittent cutting machine |
| JPS6317581B2 (en) * | 1983-03-23 | 1988-04-14 | Kogyo Gijutsuin | |
| JPH1183618A (en) * | 1997-09-04 | 1999-03-26 | Toshiba Corp | Acoustic monitoring device |
| JP2016135511A (en) * | 2015-01-23 | 2016-07-28 | 三菱電機株式会社 | Irregular machining detecting apparatus and irregular machining detecting method |
| WO2019044729A1 (en) * | 2017-08-31 | 2019-03-07 | Ntn株式会社 | State-monitoring method and state-monitoring device |
| JP2019045484A (en) * | 2017-08-31 | 2019-03-22 | Ntn株式会社 | State monitoring method, and state monitoring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6121787B2 (en) | 1986-05-28 |
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