JP3196455B2 - Inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to detection of defects and inclusions in a material to be inspected using ultrasonic waves while feeding a bar-like material to be inspected such as a square steel piece in the longitudinal direction using a transfer table with diamonds. The present invention relates to an inspection apparatus for performing the following.

[0002]

2. Description of the Related Art FIG. 8 is an external view of a conventional inspection apparatus in the direction of conveyance of a material to be inspected, and FIG. 9 is a plan view of FIG. In the figure, 1 is an ultrasonic probe, 2 is a gimbal mechanism that holds the ultrasonic probe 1 and performs an operation of following the material to be inspected, 3 is a frame that holds the gimbal mechanism 2, and 4 is a frame that holds the gimbal mechanism 2. Saddle which is held at a predetermined position shown by H, 5 is a bolt for fixing the frame 3 and the saddle 4, and 6 is the frame 3
The long holes 7a and 7b formed in the saddle 4 for moving the position of the saddle 4 by a predetermined amount indicated by I are large test materials (for example, rod-shaped materials such as square steel pieces) having small nominal dimensions. Inspection material).

[0003] Since the nominal size of the billet produced by rolling is often a plurality of sizes even in the same factory,
Inspection devices are generally adapted to accommodate two or more sizes with different nominal dimensions. The conventional inspection apparatus is configured as described above, and the change of the nominal size of the inspection material, that is, the size change as the change of the flaw detection position is performed in the following procedure. When the size is changed from the small inspection material 7a to the large inspection material 7b, the bolt 5 is loosened to move the position of the ultrasonic probe 1, and the frame 3, the gimbal mechanism 2, the ultrasonic probe 1 is moved along the elongated hole 6 by the dimension indicated by I, and the bolt 5 is tightened and fixed again to change the distance from the end face of the test material to the ultrasonic probe 1 from H to H + I. .
When changing from the large inspection material 7b to the small inspection material 7a, the procedure is reversed.

[0004]

Since the conventional apparatus is configured as described above, a tool is required to loosen and tighten bolts to move the position of the ultrasonic probe. It took time to work. In addition, there is a problem that it is difficult to fix the ultrasonic probe at an accurate position because it is slid by the length of the elongated hole and fastened with bolts.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to easily and accurately move an ultrasonic probe in accordance with a change in size of a material to be inspected without using a tool. The purpose is to obtain an inspection device that can be performed in a short time.

[0006]

An inspection apparatus according to the present invention comprises a gimbal mechanism for holding an ultrasonic probe, a moving mechanism by sliding a shaft, and a fixing device for positioning the same. .

[0007]

According to the inspection apparatus of the present invention, the position of the ultrasonic probe can be moved by a predetermined amount by replacing the position where the spacer is inserted, so that an accurate amount can be obtained in a short time by a simple operation. Also, by changing the thickness of the spacer,
Different movement amounts can be easily obtained with the same device.

[0008]

Embodiment 1 1 to 7 are views showing an embodiment of the present invention. FIG. 1 is an overall view as viewed from the direction of transporting the inspection material, FIG. 2 is a view as viewed in FIG. 1 from direction A, and FIG. FIG. 4 is a diagram in which the distance from the end surface of the large inspection material to the ultrasonic probe in the side section 2 is B, and FIG. 4 shows the distance from the inspection material end surface of the ultrasonic probe to B to C in FIG. FIG. 5 is a view showing a state in which
6 is a view as seen from the direction D in FIG. 3, and FIG. 7 is a view as seen from the direction E in FIG. Reference numerals 1-3, 7 in the figure
Reference numerals a and 7b denote the same or corresponding parts as those of the conventional apparatus. Reference numeral 8 denotes a flanged shaft provided with a flange shown by F. The gimbal mechanism 2 rotates about this shaft, but is fixed to the flanged shaft 8 by a retaining ring shown in 9 in the axial direction. The flanged shaft 8 slides on the frame 3 in the axial direction. Reference numeral 10 denotes an axis which is fixed to the frame 3 and rotatably supports the gimbal mechanism 2 but freely supports it in the axial direction. Reference numeral 11 denotes a spacer having a predetermined thickness G, the thickness of which moves the ultrasonic probe 1. Amount. The spacer 11 is mounted on the frame 3 and rotates around a pin shown at 12, and slides in the axial direction of the pin. Reference numeral 13 denotes a bolt with a knob which is overlapped with the spacer 11 and the outside or inside of the flange portion of the flanged shaft 8 and screwed and fixed to the frame 3 by hand.

In order to change the size of the large inspection material 7b to the small inspection material 7a, the front side spacer 11 and the flange portion indicated by F in the flanged shaft 8 on the back side are placed between the front side spacer 11 and the frame 3. Loosen the bolt 13 with the knob fixed with the scissors by hand, rotate the released spacer 11 to a position where it does not interfere with the flange portion in the flanged shaft 8, the gimbal mechanism 2 and the ultrasonic probe together with the flanged shaft 8. The child 1 is moved.
Then, the spacer 11 is pushed into the frame 3 side, rotated to the original position, and arranged between the flange portion of the flanged shaft 8 and the frame 3, and the bolt 13 with the knob is tightened by hand and fixed. When changing from the small inspection material 7a to the large inspection material 7b, the above procedure is performed in reverse. FIG. 3 shows a large inspection material 7
FIG. 5 shows a case where the position of the ultrasonic probe 1 with respect to b is B, and FIG. 5 shows a case where C = BG. FIG.
FIG. 7 shows the arrangement of each of the spacers 11 described above. The arrow in FIG. 7 indicates the rotation direction of the spacer 11 during the movement of the probe.

[0010]

As described above, according to the present invention, the movement of the ultrasonic probe, that is, the size change, with respect to the end faces of the test materials having different nominal dimensions is performed by sliding the shaft with the flange and changing the position of the spacer. Since the ultrasonic probe is disposed inside or outside the flanged shaft, the ultrasonic probe can be moved easily, accurately, and quickly. Further, since the bolt with knob can be tightened and loosened by hand, a tool is not required unlike a conventional device.

[Brief description of the drawings]

FIG. 1 is a front view in the transport direction showing an inspection apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram viewed from a direction A in FIG. 1 according to one embodiment of the present invention;

FIG. 3 is an arrangement diagram showing a case of a large inspection material in a side cross section of FIG. 2 according to one embodiment of the present invention;

FIG. 4 is an arrangement diagram showing a case where a shift is made to a small material to be inspected from FIG. 2 according to an embodiment of the present invention.

FIG. 5 is a side sectional view of FIG. 4 according to one embodiment of the present invention.

FIG. 6 is a view according to an embodiment of the present invention, as viewed from a direction D in FIG. 3;

FIG. 7 is a view according to one embodiment of the present invention as viewed from a direction E in FIG. 5;

FIG. 8 is a front view of a conventional inspection apparatus in a transport direction.

FIG. 9 is a plan view of FIG. 8 showing a conventional inspection device.

[Description of Signs] 1 Ultrasonic probe 2 Gimbal mechanism 3 Frame 4 Saddle 5 Bolt 6 Elongated hole 7 Material to be inspected 8 Shaft with flange 9 Retaining ring 10 Shaft 11 Spacer 12 Pin 13 Bolt with knob

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masataka Haraguchi 1 Konomi-cho, Kokurakita-ku, Kitakyushu-shi, Fukuoka Sumitomo Metal Industries Co., Ltd. (72) Inventor Tetsuo Kawakami 1 Konomi-cho, Kokurakita-ku, Kitakyushu-shi, Fukuoka Sumitomo Metal Industry Co., Ltd. Ogura Works (56) References JP-A-59-222759 (JP, A) JP-A-3-81117 (JP, A) JP-A-60-31662 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) G01N 29/00-29/28

Claims (2)

(57) [Claims] 1. An inspection apparatus for detecting a defect or inclusion in a material to be inspected by using ultrasonic waves while feeding a rod-like material to be inspected such as a square billet in a longitudinal direction with a diamond using a transfer table. In, a plurality of ultrasonic probes arranged opposite to the material to be inspected, and holding the plurality of ultrasonic probes, centering on two axes perpendicular to each other, with respect to the surface of the material to be inspected A gimbal mechanism that swings in a manner similar to the above, and a frame that freely and rotationally supports the center of the gimbal mechanism in the direction of conveyance of the test object in the direction orthogonal to the conveyance, and the other is a frame enclosing the gimbal mechanism. A shaft, one of which is rotatably supported on the opposite surface on the same axis as the shaft of the gimbal mechanism, the other is a flanged shaft movably supported by the frame, and the flanged shaft of the frame. And the above pin Provided on the frame via pins,
A spacer having a predetermined thickness, which is free in the direction of the pin axis and is rotatably supported, and a fixture for fixing the spacer to a frame in a state where the spacer is arranged outside or inside the flange of the flanged shaft. An inspection device characterized by having 2. The inspection apparatus according to claim 1, wherein a bolt with a knob is used as the fixture.