JPS5565052A - Damage detector for cutting tool - Google Patents

Damage detector for cutting tool

Info

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
Application number
JP13554478A
Other languages
Japanese (ja)
Other versions
JPS6014662B2 (en
Inventor
Takeshi Asai
Takaharu Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP13554478A priority Critical patent/JPS6014662B2/en
Publication of JPS5565052A publication Critical patent/JPS5565052A/en
Publication of JPS6014662B2 publication Critical patent/JPS6014662B2/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q17/00Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09Arrangements 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
    • B23Q17/0904Arrangements 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
    • B23Q17/0919Arrangements for measuring or adjusting cutting-tool geometry in presetting devices
    • B23Q17/0947Monitoring 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.
JP13554478A 1978-10-30 1978-10-30 Cutting tool damage detection device Expired JPS6014662B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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