MACHINE TOOL AND METHOD FOR CONTROLLING MACHINE TOOL

• US 20150258650A1
• Filed: 02/05/2015
• Published: 09/17/2015
• Est. Priority Date: 03/17/2014
• Status: Active Grant

• Current Assignee: DMG Mori Seiki Co., Ltd. (Dmg Mori Co., Ltd.)
• Original Assignee: DMG Mori Seiki Co., Ltd. (Dmg Mori Co., Ltd.)
• Inventors: Okamoto, Yoichi, Gomi, Eiichiro, Nakao, Hiroki, Saito, Yutaka
• Granted Patent: US 9,999,954 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B23Q 17/098 by measuring noise
• CPC Class Codes: B23Q 17/2241 Detection of contact between tool and workpiece
• CPC Class Codes: G05B 19/406 characterised by monitoring or safety G05B19/19 takes precedence
• CPC Class Codes: G05B 2219/37337 Noise, acoustic emission, sound
• CPC Class Codes: H04R 1/028 associated with devices performing functions other than acoustics, e.g. electric candles
• CPC Class Codes: H04R 29/00 Monitoring arrangements; Testing arrangements for hearing aids H04R25/30; detection of loudspeaker connection H04R5/04; sound-field adaptation dependent on speaker detection H04S7/308

Abstract

A machine tool that can output an abnormal noise is provided. A machine tool includes: an input unit configured to receive an input of a setting for defining an operation mode of the machine tool; a storage unit configured to store sound generated during a normal operation of the machine tool and acquired in advance; a sound collection unit configured to collect sound in the machining area; a sound selection unit configured to extract a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and a sound output unit configured to output sound extracted by the sound selection unit to the outside of the machining area.

Claims

1. A machine tool comprising:

a machining area;

a microphone configured to collect sound in the machining area;

an input unit configured to receive an input of a setting for defining an operation mode of the machine tool;

a sound selection unit configured to extract a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and

a sound output unit configured to output sound extracted by the sound selection unit to the outside of the machining area.

2. The machine tool according to claim 1, wherein

the sound selection unit is configured to:

extract a sound element included in a range defined by the setting as the part of sound, regarding at least one of a frequency, a phase and an amplitude selected as extraction criteria of sound in the machining area;

or

remove the sound element included in the range defined by the setting regarding at least one of a frequency, a phase and an amplitude selected as exclusion criteria of sound in the machining area and extract remaining sound from which the sound element is removed as the part of sound.

3. The machine tool according to claim 1, further comprising:

a storage unit configured to store a signal of sound acquired in advance as an operation sound of the machine tool, wherein

the sound selection unit is configured to;

extract a sound element similar to the signal of sound acquired in advance as the part of sound, or

extract the part of sound by removing the signal of sound acquired in advance from sound collected in the machining area.

4. A machine tool comprising:

a machining area;

a microphone configured to collect sound in the machining area;

an input unit configured to receive an input of a setting for defining an operation mode of the machine tool;

a sound selection unit configured to extract a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and

an informing unit configured to inform that a signal level of sound extracted by the sound selection unit is deviated from a predetermined range when the signal level is deviated from the predetermined range.

5. The machine tool according to claim 4, wherein

the sound selection unit is configured to:

extract a sound element included in a range defined by the setting as the part of sound, regarding at least one of a frequency, a phase and an amplitude selected as extraction criteria of sound in the machining area;

or

remove the sound element included in the range defined by the setting regarding at least one of a frequency, a phase and an amplitude selected as exclusion criteria of sound in the machining area and extract remaining sound from which the sound element is removed as the part of sound.

6. The machine tool according to claim 4, further comprising:

a storage unit configured to store a signal of sound acquired in advance as an operation sound of the machine tool, wherein

the sound selection unit is configured to;

extract a sound element similar to the signal of sound acquired in advance as the part of sound, or

extract the part of sound by removing the signal of sound acquired in advance from sound collected in the machining area.

7. A method for controlling a machine tool, comprising:

collecting sound in a machining area of the machine tool;

receiving an input of a setting for defining an operation mode of the machine tool;

extracting a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and

outputting the extracted sound to the outside of the machining area.

8. The method according to claim 7, wherein

the extracting includes:

extracting a sound element included in a range defined by the setting as the part of sound, regarding at least one of a frequency, a phase and an amplitude selected as extraction criteria of sound in the machining area;

or

removing the sound element included in the range defined by the setting regarding at least one of a frequency, a phase and an amplitude selected as exclusion criteria of sound in the machining area and extracting remaining sound from which the sound element is removed as the part of sound.

9. The method according to claim 7, further comprising:

accessing a signal of sound acquired in advance as an operation sound of the machine tool, wherein

the extracting includes;

extracting a sound element similar to the signal of sound acquired in advance as the part of sound, or

extracting the part of sound by removing the signal of sound acquired in advance from sound collected in the machining area.

10. A method for controlling a machine tool, comprising:

collecting sound in a machining area of the machine tool;

receiving an input of a setting for defining an operation mode of the machine tool;

extracting a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and

informing that a signal level of the extracted sound is deviated from a predetermined range when the signal level is deviated from the predetermined range.

11. The method according to claim 10, wherein

the extracting includes:

extracting a sound element included in a range defined by the setting as the part of sound, regarding at least one of a frequency, a phase and an amplitude selected as extraction criteria of sound in the machining area;

or

removing the sound element included in the range defined by the setting regarding at least one of a frequency, a phase and an amplitude selected as exclusion criteria of sound in the machining area and extracting remaining sound from which the sound element is removed as the part of sound.

12. The method according to claim 10, further comprising:

accessing a signal of sound acquired in advance as an operation sound of the machine tool, wherein

the extracting includes;

extracting a sound element similar to the signal of sound acquired in advance as the part of sound, or

extracting the part of sound by removing the signal of sound acquired in advance from sound collected in the machining area.