WEAR AMOUNT MEASURING DEVICE, WEAR AMOUNT MEASURING METHOD, WEAR AMOUNT MEASURING PROGRAM AND STORAGE MEDIUM

• US 20120306916A1
• Filed: 01/19/2011
• Published: 12/06/2012
• Est. Priority Date: 02/10/2010
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Marumoto, Shigeto, Itou, Daijirou, Tsubaki, Tomoyuki, Hisamatsu, Kenichi, Wakai, Hideyuki, Suzaki, Yukihiro
• Granted Patent: US 9,121,697 B2
• Time in Patent Office: Days
• US Class Current: 345/632
• CPC Class Codes: G01B 11/24 for measuring contours or curvatures
• CPC Class Codes: G01B 21/20 for measuring contours or curvatures, e.g. determining profile

Abstract

A wear amount measuring device includes an image display unit, an image processing unit, and a wear amount computing unit. The image display unit displays a real object image based on real object image data containing a wear amount measurement target and a reference part, and displays a plan image based on design plan data containing the wear amount measurement target and the reference part. The image processing unit executes an image processing of overlapping the real object image and the plan image at an equal scale on a corresponding positional relation when the reference parts are matched. The wear amount computing unit computes a wear amount based on a magnitude of an interval between a measurement contour line drawn along a contour of the wear amount measurement target in the real object image and a plan contour line in the plan image.

Claims

1. A wear amount measuring device comprising:

an image display unit configured to;

display a real object image based on real object image data containing a wear amount measurement target and a reference part thereof functioning as a measurement-related positioning reference for the wear amount measurement target; and

display a plan image based on design plan data containing the wear amount measurement target and the reference part thereof;

an image processing unit configured to execute an image processing of overlapping the real object image and the plan image at an equal scale on a corresponding positional relation when the reference part in the real object image and the reference part in the plan image are matched; and

a wear amount computing unit configured to compute a wear amount based on a magnitude of an interval between a measurement contour line drawn along a contour of the wear amount measurement target in the real object image and a plan contour line in the plan image.

2. The wear amount measuring device recited in claim 1, wherein

the wear amount measurement target is a sprocket wheel having a plurality of tooth portions on an outer periphery thereof, and

the reference part includes at least two bolts for securing the sprocket wheel to a sprocket hub as an attachment target of the sprocket wheel.

3. The wear amount measuring device recited in claim 1, wherein

the wear amount measurement target is a sprocket wheel having a plurality of tooth portions on an outer periphery thereof, and

the reference part includes two bolts for securing the sprocket wheel to a sprocket hub as an attachment target of the sprocket wheel and tooth tips of the sprocket wheel.

4. A wear amount measuring method comprising:

an image displaying step of;

displaying a real object image based on real object image data containing a wear amount measurement target and a reference part thereof functioning as a measurement-related positioning reference for the wear amount measurement target; and

displaying a plan image based on design plan data containing the wear amount measurement target and the reference part thereof;

an image processing step of executing an image processing of overlapping the real object image and the plan image at an equal scale on a corresponding positional relation when the reference part in the real object image and the reference part in the plan image are matched; and

a wear amount computing step of computing a fear amount based on a magnitude of an interval between a measurement contour line drawn along a contour of the wear amount measurement target in the real object image and a plan contour line in the plan image.

5. The wear amount measuring method recited in claim 4, wherein

the reference part includes a plurality of reference points separated away from each other, the reference points being visible in a usage state of the wear amount measurement target.

6. The wear amount measuring method recited in claim 5, wherein

the image processing step includes the sub-steps of:

displaying an image obtained by matching a plurality of reference points in a design image with the reference points in the real object image on a one-to-one basis;

converting the real object image displayed in the image displaying step at an equal scale to and on a corresponding positional relation with the plan image displayed in the image displaying step based on displacement between the reference points of the design image displayed in the sub-step and the reference points of the design image displayed in the image displaying step; and

displaying the converted real object image to be overlapped with the plan image.

7. A non-transitory computer-readable storage medium storing a wear amount measuring program configured to cause a computer to execute a wear amount measuring method, the wear amount measuring method comprising:

an image displaying step of;

displaying a real object image based on real object image data containing a wear amount measurement target and a reference part thereof including a plurality of reference points and functioning as a measurement-related positioning reference for the wear amount measurement target; and

displaying a plan image based on design plan data containing the wear amount measurement target and the reference part thereof including the plural reference points;

an image processing step of executing an image processing of overlapping the real object image and the plan image at an equal scale on a corresponding positional relation when the reference part in the real object image and the reference part in the plan image are matched; and

a wear amount computing step of computing a wear amount based on a magnitude of an interval between a measurement contour line drawn along a contour of the wear amount measurement target in the real object image and a plan contour line in the plan image.

8. The non-transitory computer-readable storage medium recited in claim 7, wherein

the image processing step includes the sub-steps of:

displaying an image obtained by matching a plurality of reference points in a design image with the reference points in the real object image on a one-to-one basis;

converting the real object image displayed in the image displaying step at an equal scale to and on a corresponding positional relation with the plan image displayed in the image displaying step based on displacement between the reference points of the design image displayed in the sub-step of displaying the image obtained by matching and the reference points of the design image displayed in the image displaying step; and

displaying the converted real object image to be overlapped with the plan image.

9. (canceled)