JPS57184655A - Detector for broken tool edge - Google Patents
Detector for broken tool edgeInfo
- Publication number
- JPS57184655A JPS57184655A JP6794181A JP6794181A JPS57184655A JP S57184655 A JPS57184655 A JP S57184655A JP 6794181 A JP6794181 A JP 6794181A JP 6794181 A JP6794181 A JP 6794181A JP S57184655 A JPS57184655 A JP S57184655A
- Authority
- JP
- Japan
- Prior art keywords
- change
- tool edge
- signals
- tool
- work
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
PURPOSE:To detect a defect at the edge of a cutting tool to maintain accurate machining operation of an unmanned machine tool by comparing the change in voltage in closed electric circuit closed when the tool edge is brought in contact with the work to be machined and the change in number of AE counts per unit time of the AE signals. CONSTITUTION:An electric closed circuit is established when the tool edge 2 comes in contact with the work 1 to be machined with the contact point 4 on. The change in current due to contact between the tool edge 2 and the work 1 is detected by a resistance 5, and the current change signal issured therefrom is converted into a change in voltage at a discriminator 14. The acoustic emission signals (AE signals) are detected by a detector 10, and the number of AE counts is converted into the number of change per unit time at the discriminator 14. By plotting these changes with the cutting time on the axis of abcissas, both a voltage drop and the AE signals are seen generated when the tool edge is broken, a rise in voltage and the AE signals when cut chips are stuck around the tool edge, and a voltage drop but no AE signal when cutting oil enteres between the tool edge and the work. Thus, the type of damage of trouble can be known to some extent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794181A JPS57184655A (en) | 1981-05-06 | 1981-05-06 | Detector for broken tool edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794181A JPS57184655A (en) | 1981-05-06 | 1981-05-06 | Detector for broken tool edge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57184655A true JPS57184655A (en) | 1982-11-13 |
Family
ID=13359457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6794181A Pending JPS57184655A (en) | 1981-05-06 | 1981-05-06 | Detector for broken tool edge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57184655A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164763A (en) * | 1985-01-11 | 1986-07-25 | Omron Tateisi Electronics Co | Detecting system of tool breakage |
| JPS61164764A (en) * | 1985-01-14 | 1986-07-25 | Hitachi Seiki Co Ltd | Detecting device of cutting tool damage |
| KR20060011799A (en) * | 2005-09-26 | 2006-02-03 | 주식회사 마이크로텍 | Method for detecting drill breakage and device for the same |
| KR101058233B1 (en) | 2008-12-09 | 2011-08-22 | 주식회사 진영엠에스씨 | Tool breakage detection method and detection device for machine tools |
| WO2021235217A1 (en) * | 2020-05-18 | 2021-11-25 | 住友電気工業株式会社 | Determination device, cutting tool system, and determination method |
-
1981
- 1981-05-06 JP JP6794181A patent/JPS57184655A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164763A (en) * | 1985-01-11 | 1986-07-25 | Omron Tateisi Electronics Co | Detecting system of tool breakage |
| JPS61164764A (en) * | 1985-01-14 | 1986-07-25 | Hitachi Seiki Co Ltd | Detecting device of cutting tool damage |
| KR20060011799A (en) * | 2005-09-26 | 2006-02-03 | 주식회사 마이크로텍 | Method for detecting drill breakage and device for the same |
| KR101058233B1 (en) | 2008-12-09 | 2011-08-22 | 주식회사 진영엠에스씨 | Tool breakage detection method and detection device for machine tools |
| WO2021235217A1 (en) * | 2020-05-18 | 2021-11-25 | 住友電気工業株式会社 | Determination device, cutting tool system, and determination method |
| JP7036292B1 (en) * | 2020-05-18 | 2022-03-15 | 住友電気工業株式会社 | Judgment device, cutting tool system and judgment method |
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