JPS6196453A - Inspecting instrument - Google Patents

Abstract

PURPOSE:To enable to perform the prescribed inspection without moving the center point where ultrasonic wave is made incident even in case of the material to be inspected being inclined by making an ultrasonic probe being rocked on the sector made by one part of the circle having the center point where ultrasonic wave is made incident at its center. CONSTITUTION:An ultrasonic probe 2, holder 3 and shoe 4 can perform a rocking motion around the center point where ultrasonic wave is made incident, since both 1st sector 9 and 2nd sector are made by one part of the circle having the center point where ultrasonic wave is made incident at its center. In case, therefore an inspection is performed by deciding the center point A where ultrasonic wave is made incident at the place L from the left end of the material 1 to be inspected, the center point A where ultrasonic wave is made incident of the ultrasonic probe 2 is not moved even in the condition of the material 1 to be inspected being inclined around the center point A where ultrasonic wave is made incident but existed at the place L from the left end of the material 1 to be inspected and the inspection can be performed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an inspection device that uses ultrasonic waves to inspect the presence or absence of defects or inclusions in a material to be inspected, and particularly to an inspection device that uses ultrasonic waves to inspect the presence or absence of defects or inclusions in a material to be inspected. It is about prevention.

[Conventional technology]

Fig. 4 is a perspective view showing a conventional inspection device, Fig. 5 is a sectional view thereof, and Fig. 6 is a sectional view -C for explaining the operation.
(ll) Material to be tested, (□). Material to be tested. (1) is the shoe that contacts the first one.
(6) is a first pin that is attached to this first gimbal frame and rotationally supports the holder (3), (7) is a second gimbal frame, (8) is a first pin that is attached to this first gimbal frame, and (8) is a first pin that is attached to this first gimbal frame and rotationally supports the holder (3). attached to the frame and the first
This is the second pin that rotatably supports the gimbal frame (5) and constitutes a gimbal mechanism.

The conventional inspection device is configured as described above, and when the material to be inspected (9, for example) is transported, the second gimbal frame (
7) Of course, the second pin (8) is barbed, and the inspection device is supported horizontally and at right angles by a pressing mechanism (not shown), and the shoe (4) is brought into contact with the material to be inspected (1).

If the material to be inspected (1) has irregularities such as multiple curves, remove the holder (
3) and the shoe (4), the first pin (6) and the holder (3) and the second pin (8) and the first gimbal frame (5) Further rotational movement.

The inspection device is pressed by a mechanism that moves up and down, so that the ultrasonic probe (2) aligns with the normal direction of the surface of the material to be inspected (1).

[Problem that the invention seeks to solve]

In the conventional inspection device as described above, 9. For example, the material to be inspected (1)
When inspecting by setting the ultrasonic incidence center point A at a distance L from the left end of the pin, if the specimen (1) is in a horizontal state as shown in , and the center of ultrasound incidence can both be placed at a distance of L from the left edge of the specimen (1) to carry out a prescribed inspection. When the ultrasound incidence center point A is tilted upward to the left, the rotation center B of the second pin (8) is located at a distance L from the left end of the test material (1). The ultrasound incidence center point A rotates around the rotation center B of the second pin (8) and moves to the upper left X. Therefore, the ultrasound incidence center point moves to the left by ΔL in terms of horizontal distance. However, there was a problem in that it was not possible to make an inspection sound at a distance L from the left end of the material to be inspected (11).

Although the description has been made here about the rotation center B of the second pin (8), a similar problem also exists regarding the rotation of the first pin (6).

This invention was made to solve this problem, and even if the material to be inspected is tilted toward the center of ultrasonic wave incidence, the center point of ultrasonic wave incidence does not move and inspection can be performed at a predetermined position. The purpose is to obtain an inspection device [11-] that can be used.

[Means for solving problems]

The inspection device according to the present invention has a swinging section attached to a frame so that a holder for holding an ultrasound probe and a shoe can swing around the center point of ultrasound incidence.

[Effect].

In this invention, the ultrasonic incidence center point and the rotation center of the ultrasonic probe coincide, so even if the specimen is tilted toward the ultrasonic incidence center point, the ultrasonic incidence center point will move. There's nothing to do.

〔Example〕

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a sectional view thereof, and Fig. 3 is a sectional view for explaining the operation.
j5. (1) is the material to be tested, and (2) to (4) are exactly the same as the conventional apparatus described above. (9) is a first sector that fully supports the holder (3) and is made of a part of a circle centered on the ultrasonic incidence center point, and member (9) is a first sector guide that swings this first sector. , residence υ is the first sector guide a1 above.
It is attached to the first sector (9) and swings in a direction perpendicular to the swinging direction of the first sector guide frame, and is made of a part of a circle centered on the ultrasonic incident center point. The second sector (t2 is a second sector guide for swinging this second sector, and constitutes a swinging section).

Further, (I3 is a frame that supports the second sector guide fi3'.

In the inspection device configured as described above.

Since both the first sector (9) and the second sector αυ are made of a part of a circle having the ultrasound incident center point as the center,
Ultrasonic probe (2), holder +3) and shoe (4)
) can swing in place of the center of ultrasonic incidence, so when inspecting the center of ultrasonic wave incidence Avr at a fixed position L from the left end of the material to be inspected (1), as shown in Figure 2. Even when the specimen (1) is horizontal, as shown in Fig. 3, the ultrasound probe (2) of,
The ultrasonic incidence center point A can be inspected at a distance L from the left end of the material to be inspected (1) without moving.

〔Effect of the invention〕

As explained above, this invention has the advantage that the ultrasonic slope swings on a sector made of a part of a circle centered on the ultrasonic incident center point, so that even if the specimen is tilted, the ultrasonic wave will not be transmitted. This has the effect that the center of incidence does not shift in position.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view for explaining the operation, and Fig. 4 is a sectional view showing an embodiment of the present invention.
The figure is a perspective view of a conventional inspection device, FIG. 5 is a sectional view thereof, and FIG. 6 is a sectional view for explaining the operation. In the figure, (2) is an ultrasound probe, and (3) is a holder. (4) Keshu, (9) is the first sector, α value is the first sector guide, αυ is the second sector, (12 is the second sector guide, α1 is the frame. Note that in Figure 1 The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] An ultrasonic probe facing the material to be inspected, a holder that holds the ultrasonic probe, a shoe attached to the holder that contacts the material to be inspected, and a circle whose center is the ultrasonic incidence center point of the ultrasonic probe. a first sector made of a part; a first sector guide for swinging the first sector; a first sector guide attached to the first sector guide;
A second sector that swings in a direction perpendicular to the swinging direction of the sector and the first sector guide and is made of a part of a circle having the ultrasound incidence center point as its center. An inspection device comprising a second sector guide that performs a swinging motion.