PEENING DEVICE AND PEENING METHOD

• US 20150258596A1
• Filed: 10/09/2013
• Published: 09/17/2015
• Est. Priority Date: 10/10/2012
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Kozaki, Takashi
• Granted Patent: US 9,889,488 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B21D 31/06 Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming forging hammers B21J7/00
• CPC Class Codes: B23K 31/00 Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups making tubes or profiled bars involving operations other than soldering or welding B21C37/04, B21C37/08
• CPC Class Codes: B24B 39/006 Peening and tools therefor
• CPC Class Codes: C21D 11/00 Process control or regulation for heat treatments
• CPC Class Codes: C21D 2221/00 Treating localised areas of an article
• CPC Class Codes: C21D 7/04 of the surface
• CPC Class Codes: C21D 7/06 by shot-peening or the like
• CPC Class Codes: C21D 7/08 by burnishing or the like
• CPC Class Codes: C22C 21/00 Alloys based on aluminium
• CPC Class Codes: C22F 3/00 Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons

Abstract

A peening device is provided with: peening impact pins that impact on a surface to be worked; a device main body that uses vibration to move the peening impact pins back and forth with respect to the surface to be worked; servo motors (22x, 22y) that adjust the inclination of the device main body with respect to the surface to be worked; laser displacement gauges (20A, 20B, 20C, 20D) that detect the device angle; and a vibration sensor (18) that detects the vibration state of the device main body. Furthermore, a control device (40) for the peening device controls the servo motors (22x, 22y) such that the vibration state detected by the vibration sensor (18) is a predetermined vibration state. Thus, the peening device carries out excellent peening by conforming to the surface to be worked, the shape of which changes from moment to moment because of the peening.

Claims

1. A peening device comprising:

an impactor that is adapted to impact on a surface to be worked;

a device main body that that is adapted to reciprocatingly moves the impactor to and away from the surface to be worked;

an inclination adjuster that is adapted to adjust an inclination of the device main body with respect to the surface to be worked;

a vibration detector that is adapted to detect a vibration state of the device main body; and

a controller that is adapted to control the inclination adjuster to adjust the inclination of the device main body to an inclination in which the vibration state detected by the vibration detector becomes a predetermined vibration state,

wherein the inclination adjuster is a motor that rotates the device main body around a predetermined axis, and

wherein the controller is adapted to calculate an angle between the device main body and the surface to be worked from a rotation angle of the motor, and to determine an operation amount for the inclination adjuster from a difference between the calculated angle and a predetermined angle, and a difference between the vibration state detected by the vibration detector and the predetermined vibration state.

6. The peening device according to claim 1,

wherein when vibration in the state detected by the vibration detector is greater than in the predetermined vibration state, the predetermined vibration state is updated to the detected vibration state.

2. (canceled)

3. A peening device comprising:

an impactor that is adapted to impact on a surface to be worked;

a device main body that is adapted to reciprocatingly moves by vibration the impactor to and away from the surface to be worked;

an inclination adjuster that is adapted to adjust an inclination of the device main body with respect to the surface to be worked;

an angle detector that is adapted to detect an angle between the device main body and the surface to be worked; and

a controller that is adapted to control the inclination adjuster to adjust the inclination of the device main body to equalize the angle detected by the angle detector with a predetermined angle.

4. The peening device according to claim 3, further comprising:

a vibration detector that is adapted to detect a vibration state of the device main body,

wherein the controller is adapted to determine an operation amount for the inclination adjuster from a difference between the angle detected by the angle detector and the predetermined angle and a difference between the vibration state detected by the vibration detector and a predetermined vibration state.

5. The peening device according to claim 3,

wherein the angle detector is adapted to detect a distance at a plurality of locations between the device main body and the surface to be worked, and thereby to detect the angle between the device main body and the surface to be worked.

10. The peening device according to claim 4,

wherein when vibration in the state detected by the vibration detector is greater than in the predetermined vibration state, the predetermined vibration state is updated to the detected vibration state.

7. A peening method using a peening device which includes an impactor that is adapted to impact on a surface to be worked, a device main body that is adapted to reciprocatingly moves the impactor to and away from the surface to be worked, an inclination adjuster that is adapted to adjust an inclination of the device main body with respect to the surface to be worked, and a vibration detector that is adapted to detect a vibration state of the device main body, comprising:

detecting the vibration state of the device main body by the vibration detector; and

controlling the inclination adjuster to adjust the inclination of the device main body to an inclination in which the detected vibration state becomes a predetermined vibration state,

wherein the inclination adjuster is a motor that rotates the device main body around a predetermined axis, and

wherein in the controlling the inclination adjuster, an angle between the device main body and the surface to be worked is calculated from a rotation angle of the motor, and an operation amount for the inclination adjuster is determined from a difference between the calculated angle and a predetermined angle, and a difference between the vibration state detected by the vibration detector and the predetermined vibration state.

8. A peening method using a peening device which includes an impactor that is adapted to impact on a surface to be worked, a device main body that is adapted to reciprocatingly moves by vibration the impactor to and away from the surface to be worked, an inclination adjuster that is adapted to adjust an inclination of the device main body with respect to the surface to be worked, and an angle detector that is adapted to detect an angle between the device main body and the surface to be worked, comprising:

detecting the angle between the device main body and the surface to be worked by the angle detector; and

controlling the inclination adjuster to adjust the inclination of the device main body to equalize the detected angle with a predetermined angle.

9. The peening method according to claim 8,

wherein the peening device further includes a vibration detector that is adapted to detect a vibration state of the device main body,

wherein in the detecting the angle between the device main body and the surface to be worked, the angle between the device main body and the surface to be worked is detected by the angle detector, and the vibration state of the device main body is detected by the vibration detector, and

wherein in the controlling the inclination adjuster, an operation amount for the inclination adjuster is determined from a difference between the detected angle and a predetermined angle and a difference between the detected vibration state and a predetermined vibration state.