JPS5565052A - Damage detector for cutting tool - Google Patents
Damage detector for cutting toolInfo
- Publication number
- JPS5565052A JPS5565052A JP13554478A JP13554478A JPS5565052A JP S5565052 A JPS5565052 A JP S5565052A JP 13554478 A JP13554478 A JP 13554478A JP 13554478 A JP13554478 A JP 13554478A JP S5565052 A JPS5565052 A JP S5565052A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- tool
- low
- frequency components
- damage
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
- B23Q17/0919—Arrangements for measuring or adjusting cutting-tool geometry in presetting devices
- B23Q17/0947—Monitoring devices for measuring cutting angles
Abstract
PURPOSE:To automatically detect the damage of a tool, by dividing the high-frequency and low-frequency components of acoustic emission signal emanating from the tool or a machine tool from each other with a boundary of prescribed frequency and comparing the levels of the high-frequency and low-frequency components with each other. CONSTITUTION:A detector 1 is attached to a tool or a machine tool. An acoustic emission signal is detected by an acoustic emission signal measuring unit. The signal is applied to a frequency discriminator 3 through an amplifier 2 so that the signal is divided into high-frequency components H of 200kHz or more and low-frequency components L ranging from 50 to 200kHz. The ratio H/L of the output levels of both the components is calculated by a divider 4. When the ratio H/L exceeds a reference value, a comparator 5 drives an alarm 6. When the frequency components of 50kHz and more are divided into high-frequency and low-frequency ones with a boundary of 150-300kHz, there is a correlation between the output level ratio H/L and the damage percentage of the tool. According to this fact, the damage of the tool can be detected with a required accuracy.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13554478A JPS6014662B2 (en) | 1978-10-30 | 1978-10-30 | Cutting tool damage detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13554478A JPS6014662B2 (en) | 1978-10-30 | 1978-10-30 | Cutting tool damage detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5565052A true JPS5565052A (en) | 1980-05-16 |
JPS6014662B2 JPS6014662B2 (en) | 1985-04-15 |
Family
ID=15154256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13554478A Expired JPS6014662B2 (en) | 1978-10-30 | 1978-10-30 | Cutting tool damage detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6014662B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61132862A (en) * | 1984-11-30 | 1986-06-20 | Omron Tateisi Electronics Co | Tool breakage detecting device |
JP2004028976A (en) * | 2001-10-12 | 2004-01-29 | Sekisui Chem Co Ltd | Method and apparatus for inspecting reinforced concrete pipe |
-
1978
- 1978-10-30 JP JP13554478A patent/JPS6014662B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61132862A (en) * | 1984-11-30 | 1986-06-20 | Omron Tateisi Electronics Co | Tool breakage detecting device |
JP2004028976A (en) * | 2001-10-12 | 2004-01-29 | Sekisui Chem Co Ltd | Method and apparatus for inspecting reinforced concrete pipe |
Also Published As
Publication number | Publication date |
---|---|
JPS6014662B2 (en) | 1985-04-15 |
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