JPS6049258A - Inspecting device - Google Patents

Abstract

PURPOSE:To perform accurate inspection by clamping a square billet with a couple of guide rails which have V-shaped grooves before and behind a flaw detection head and are coupled together through a centering mechanism. CONSTITUTION:The square billet 2 when sent by a conveyor roller as shown by an arrow Z is pinched with pinch rolls 4a and 4b on the upstream side and advance to an inspecting device. When the front end A of the square billet 2 passes between rolls 10a and 10b, the 1st centering mechanism 11 operates to clamp the square billet 2 with the rolls 10a and 10b, and a moving substrate 8 moves by the slide of a slider 9 so that its center is aligned to the center of the square billet 2. Then, when the front end A of the square billet 2 passes by the flaw detection head 13, the 2nd contacting and leaving material mechanism 19 operates to bring the flaw detection head 13 into contact with the square billet 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an inspection device 6 for inspecting a rod-shaped specimen having a generally polygonal cross section with irregular shapes and dimensions. be. The following explanation is for convenience 1:+:.

A device that uses ultrasonic waves to detect defects near the surface and internal defects of a square billet having a generally square cross section from two sides will be described.

[Prior art]

Figure 1 (al~(el) shows how the square billet is deformed with respect to the geometrically ideal square prism (1) (indicated by the broken line in the figure). In the figure (Al, bending; in Figure (b), twisting; in Figure C1, variation in the external dimensions of the cross section; in Figure (d), variation in the angle between two adjacent sides of the cross section; - t, that is, deviated from the right angle, and in the same figure (e), each side is convex.

In actual square billets, all or a part of these deformations are deformed in combination. Figure 2 shows the state in which a rectangular billet being transported in the direction of arrow Z is being subjected to ultrasonic flaw detection. This is an actual square billet having all or part of the deformation as shown in Fig. 1, where (3) is a conveyance roll, (4a), (4b) is a pinch row # on the upstream side of the vinegar feed line, (5a), (5b) is downstream of the conveyance line (141
The pinch row (6) of 1 is an inspection device C' for performing ultrasonic flaw detection, and the tip A of the M fin and throat (1) is
is transported to the inspection device (6), and the square pireno 1-(+1) is pinched by the upstream pinch rolls (4a) and (4b), and the pinch rolls (5a) and (sb) are not yet activated. Indicates the condition.

As an inspection device for inspecting the square billet (2) in such a state, there are those shown in FIGS. 3 to 6. In Figure 3, is the transport direction Z plane-angle? 4 is a view of FIG. 3 as seen from the direction of arrow B. FIG. 5 is a view of FIG. 3 as seen from the direction of arrow 0.
In the figure, Figure 3 is indicated by the dashed dotted line 1)'.

It is a cross-sectional view taken along D' and viewed from the direction of arrow C. In the figure, (7) is a fixed pedestal, (8) is a moving board, (9) is a slider that slides the XVC moving board (8) in a horizontal forming direction at right angles to the transport direction Z, (10a), (1
01)) is the square billet (2) from the left and right of the square billet (2).
), 01) is a pair of rolls that sandwich the above roll (
10a), (ill)) A first centering mechanism that adds a centering function; (14a), (14b) Guide rolls with V-shaped grooves for sandwiching the opposing apex angles from the left and right sides of the square billet (2), αQ is the guide 0 mentioned above.
- A second centering mechanism that adds a centering function to (14a), (141)), 0e is the block to which the flaw detection head θ and the second centering mechanism 0→ are attached, 07) is 111b in the Z direction. A rolling mechanism that can rotate around the body, 0 is a parallel link mechanism with a rolling mechanism θη attached to one end.

The other end is attached to the first moving board. 01 is a second elevator mechanism for raising and lowering the parallel link mechanism 0υ.

Next, the operation will be explained. The square pyreno l-(2+) was sent in the direction of arrow Z by the transport roll (311C).

After being pinched by the upstream pinch rolls (4a) and (4b), it advances to the inspection device (6). The tip A of the square billet (2) is first rolled (10a), (IQb
), the second centering mechanism 0υ operates, and the rolls (10a) and (10b) move to square billet (2).
The movable board (8) is moved by sliding with a slider (9) so that its center and the center of the square billet (2) coincide with each other. Next, when the tip of the square billet (2) passes through the flaw detection head α3; A guide roll (14a) attached to the second centering mechanism Q4.

Attach the square billet (2) to (14b). Also, at this time, the same signal is used to roll (10a), (10b
) is released. Therefore, the flaw detection head is facing the guide roller (
14a).

(14b) as a guide, the slider (9) is used for bending the square billet (2) in the X direction, and the bending of the square billet 1-(2) in the perplexing direction (hereinafter referred to as the Y direction). The square billet (
The twist of 2) is imitated by the rolling mechanism θD.

Since the conventional inspection apparatus is configured in this way, it has the following drawbacks. This will be explained below based on FIG.

The same figure is an enlarged view of Fig. 3 from the direction of arrow E. In Fig. 2, the square billet (2) has a bend in the X direction, and the displacement component of the bend in the X direction is caused by the sliding of the slider (9). By doing so, the flaw detection head θ:9 is set at a predetermined position with respect to the square billet (2).

It is not possible to copy the angle θ of the bend, and the angle θ remains as a copying error. A similar situation occurs when the square billet (2) is bent in the Y direction, resulting in the same scanning angle error θ. When the above-mentioned tracing error occurs, the inspection accuracy of the probe attached to the 0th floor of the flaw detection head decreases, making it impossible to perform accurate inspection.

[Summary of the invention]

This invention was made with the aim of improving this drawback, and provides an inspection device that can eliminate tracing errors in the yawing direction caused by bending of a square billet, which is a material to be inspected, by installing guide rolls before and after the flaw detection head. This is a proposal.

[Embodiment J of the Invention Fig. 8 is a diagram showing an embodiment of the invention, and is a view of the line conveyance direction Z direction viewed from the side, that is, the X direction. In the figure (2) to Q5. Q7) ~ OI is completely the same as the above conventional device. (20a), (20b)
is a guide roll with a pair of ■-shaped grooves installed on the opposite side of the flaw detection head Q3 in the Z direction with respect to the guide rolls (14a) and (14b), and Ol) is the guide roller nod (2Qa), ( A third centering mechanism that adds a centering function to 09.20b), θ2 is the second centering mechanism 09. and third centering machine 4: ric
21) The first frame C3 is the first frame ■, which has the degree of freedom of rotation in the directions of arrows F and F'. The second frame (c) is a block that can be taken with the degree of freedom of rotation in the direction of arrows G and G'.

In the inspection device configured as described above, when the square billet (2) is sent in the direction of arrow Z by the conveyance roll (3), the upstream pinch rolls (4a), (41)
), then proceed to the inspection device (5) - The tip of the square billet (2) is first rolled (10a)
.

(1ob), the first centering machine ti'
ja+) works, rolls (10a), (101))
sandwich the rectangular billet (2), and the slider (9) slides and moves the movable substrate (8) so that its center coincides with the center of the rectangular billet (2). Next, square billet (2
) When the tip of the flaw detector 03 passes through the probe 1, the second contacting/separating material mechanism 01 operates, and the flaw detection head OQ contacts the square billet. Next, the square billet (
2) The second centering mechanism 0 on the upstream side in the conveyance direction
Guide roll (14a) attached to 9, (1
4b) pinches the square billet (2). Also, at this moment, the rolls (10a) and (10ri) are released by the same signal. Next, when the tip A of the square billet (2) reaches the guide rolls (20a) and (20b), the third centering mechanism Qυ operates.

The guide rolls (20a) and (20b) are made of square billet (
Attach 2). The square billet 2) further advances, and when its tip advances to the downstream pinch rolls (5a), (51)), the pinch rolls (5a), (5
b), pinch roll (4a), (
4b) is released.

Therefore, the flaw detection head eel has a guide roller (14a) and a guide roller (14a).
1)).

Using O6 and (2(la) and (2Gb) as guides,
For the bending of the square billet (2) in the X direction, the first slider (a+) is used, and for the bending of the square billet (2) in the Y direction, the first contact/separation member mechanism O3 is used to twist the square billet (2). In other words, the rolling mechanism 07) allows for the deviation due to rotation around the Z-shape, which is similar to conventional inspection equipment, but two guide rolls are installed before and after the flaw detection head 07). Therefore, due to the rotation around the For deviations due to rotation, the arrow 0. G'
It can be imitated by the four rotational degrees of freedom shown by .

〔Effect of the invention〕

As described above, in this invention, a pair of guide rolls each having a V-shaped groove and connected by a centering mechanism are installed at the front and rear of a flaw detection head.

Since the square billet is sandwiched between the square billets, it is possible to avoid misalignment of the square billet in the vertical and horizontal directions, which are perpendicular to the conveyance direction of the square billet, as well as misalignment of the rolling machine due to one return of the square billet. In addition to copying, it is also possible to copy the angular component of the vertical bend and the angular component of the horizontal bend as the square billet bends.

This has the effect of allowing accurate testing to be performed.

[Brief explanation of the drawing]

Figure 1 shows the bending, twisting, and twisting of the test material using a corner fin and .
FIG. 2 is a diagram for explaining the unevenness of the surface, and FIG. 2 is a diagram for explaining the state in which a square billet is being inspected. 3 to 6 are diagrams showing a conventional inspection device, FIG. 7 is a diagram for explaining the drawbacks of the conventional inspection device, and FIG. 8 is a diagram showing an inspection device based on the present invention. In the figure (2
) is a square billet), +81 is a moving board. (9) is the slider, (one side is the contact/separation material mechanism, and 03 is the flaw detection head. (14a), (14b), (20a), (20b)
) is the guide row A/, (151°Cil+ is the centering mechanism, αη is the rolling mechanism, Q is the first frame, (c) is the second frame, and the three majors are the blocks. What is the same in each figure? , or corresponding parts are given the same reference numerals. Agent Masuo Oiwa Figure 1 (C) (i) Figure 5 Figure 6 Figure 2

Claims (1)

[Claims] A bar-shaped test material with a roughly polygonal cross section is transported on a transport line, and an equal amount is placed on the non-parallel surfaces of the test materials facing each other (7 materials + 'i2 forest). a) a plurality of flaw detection heads capable of performing the above-mentioned flaw detection heads, a gimbal mechanism having a two-in-one gimbal function for each of the flaw detection heads in h), a gimbal mechanism capable of performing λ), and a first gimbal mechanism that connects the plurality of gimbal mechanisms.
and a pair of rolls that sandwich the surface of the test material or the 1 m point and its vicinity from the opposite row side with respect to the symmetry axis V of the cross section of the test material. and two sets of centering mechanisms having a centering function on the -71σ eight rolls and installed at successive positions via the first 27 frames, and the first frame and the two sets of centering mechanisms. The first one with the mechanism fixed
The first frame mentioned above refers to the material to be inspected σ.
) A second frame rotatably connected by VC around a first axis perpendicular to the conveying direction; and the second frame,
A block is connected to be freely rotatable around a second axis perpendicular to both the transport direction of the test material and the first dll+, and the block is J-lifted around the central axis of the Nli surface of the test material. A moving mechanism that moves the flaw detection head into a liquid phase or away from the test material in a direction perpendicular to the transport direction of the test material through the above-mentioned 4 and 6 movement mechanism parts. ,
''=consisting of the moving direction of the welding machine 171i and a slide/slide mechanism that slides the moving @+14 in a direction perpendicular to the direction of conveyance of the material to be inspected, and moves the rolls of the two sets of guide mechanisms to the material V to be inspected. By pressing this, the flaw detection throat can be held at the same position and in the same direction across the width of the material to be tested against any bending, bending or twisting of the material to be tested. An inspection device (6') that features a V-cut.