Peening device and peening method

Patent metadata

Field	Value
Publication number	US-9889488-B2
Application number	US-201314433552-A
Country	US
Kind code	B2
Filing date	Oct 9, 2013
Priority date	Oct 10, 2012
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

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 ( 22 x, 22 y ) that adjust the inclination of the device main body with respect to the surface to be worked; laser displacement gauges ( 20 A, 20 B, 20 C, 20 D) 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 ( 22 x, 22 y ) 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.

First claim

The invention claimed is:

1. A peening device comprising:
an impact unit that impacts on a surface to be worked;
a device main body that uses vibration to move the impact unit back and forth with respect to the surface to be worked;
an inclination adjustment unit that adjusts an inclination of the device main body with respect to the surface to be worked;
an angle detection unit that detects an angle between the device main body and the surface to be worked; and
a vibration detection unit that detects a vibration state of the device main body; and
a control unit that controls the inclination adjustment unit,
wherein the control unit determines an operation amount with respect to the inclination adjustment unit based on a difference between the angle detected by the angle detection unit and a predetermined angle and a difference between the vibration state detected by the vibration detection unit and a predetermined vibration state, and controls the inclination adjustment unit based on a determined operation amount.

2. The peening device according to claim 1 , wherein the inclination adjustment unit is a motor that rotates the device main body around a predetermined axis.

3. The peening device according to claim 2 , wherein the angle detection unit calculates the angle between the device main body and the surface to be worked based on a rotation speed of the motor.

4. The peening device according to claim 2 , wherein the angle detection unit detects a distance between the device main body and the surface to be worked at a plurality of locations, and detects the angle between the device main body and the surface to be worked.

5. The peening device according to claim 1 , wherein when the vibration in the vibration state detected by the vibration detection unit is greater than that in the predetermined vibration state, the predetermined vibration state is updated to a detected vibration state.

6. A peening method comprising:
a step of providing a peening device which includes an impact unit that impacts on a surface to be worked, a device main body that moves the impact unit back and forth with respect to the surface to be worked, and an inclination adjustment unit that adjusts an inclination of the device main body with respect to the surface to be worked;
a step of detecting an angle between the device main body and the surface to be worked;
a step of detecting a vibration state of the device main body;
a step of determining an operation amount with respect to the inclination adjustment unit based on a difference between the angle detected by the angle detection unit and a predetermined angle and a difference between the vibration state detected by the vibration detection unit and a predetermined vibration state; and
a step of controlling the inclination adjustment unit based on a determined operation amount.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Kozaki Takashi

Classifications

• C22F3/00

  Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons · CPC title

• C21D7/04

  of the surface · CPC title

• C21D7/06

  by shot-peening or the like · CPC title

• B23K31/00

  Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 · CPC title

• B24B39/006

  Peening and tools therefor · CPC title