JPS62198753A - Inspection device - Google Patents

Abstract

PURPOSE:To easily set specific distance from a sample by rotating the guide part of a cylinder body and shifting an ultrasonic probe in position along a groove which is provided to the guide part and varies continuously in distance from the center of the cylindrical body. CONSTITUTION:The guide part 11 at the periphery of the cylinder body 3 is rotated and then a pin 10 which supports the ultrasonic probe 2 moves along the groove 12 which is provided to the guide part 11 and varies continuously in distance from the center of the cylinder body with the pressing force of a spring 14 provided between the probe 2 and a support part 13. The probe 2, on the other hand, is inserted toward the center of the cylinder body and moves only toward the center of the cylinder body at any time, so that the necessary specific distance from the sample 1 is easily set only by rotating the guide part 11.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention uses an ultrasonic probe that rotates around a tubular or rod-shaped test material that is conveyed straight without making two rotations to detect flaws in a spiral shape. The characteristics of the inspection equipment used are that when setting the distance between the ultrasonic probe and the specimen, a guide is placed around the cylindrical body into which the ultrasonic probe is inserted toward its center. When the part is rotated, the pin that rotatably supports the ultrasonic probe is slid and guided through a groove whose distance from the center of the cylinder changes continuously, causing the ultrasonic probe to move toward the center of the cylinder. We propose a device that can move and set the distance between the ultrasonic probe and the specimen to be 11't.

[Conventional technology]

FIG. 5 is a sectional view showing a conventional inspection device.

FIG. 6 is a perspective view of a tubular or round rod-shaped test material (hereinafter referred to as test material) that is transported straight without rotation, in the transport direction A. In the figure, (1) is the material to be tested.

(2) is an ultrasonic probe that rotates around the test material (1);
(3) is a cylindrical body into which the ultrasound probe (2) is inserted;
(4) is the ultrasonic probe (2) and the cylindrical body (3) in order to set the specimen material (11) and the ultrasonic probe (2) at a predetermined distance.
The spacer (5) is inserted between the ultrasonic probes (2
1 and the spacer (4) at the same time to the cylindrical body (3), (6) are rings provided at both ends of the cylindrical body (3),
(7) is a cover that fixes the ring (6) to the cylindrical body (3), and (8) is the material to be tested (11, the cylindrical body (3), and the ring (6)).
an ultrasonic medium provided in a space formed by
(9) is an introduction port into which the ultrasonic medium (8) is introduced.

The conventional inspection device is configured as described above, and the test material (1)
The ultrasonic probe (21 is the material to be tested (1)) rotating around the
When the material is transported in the transport direction A and contacts the rings (6) provided at both ends of the cylindrical body (3), it is transferred to the specimen material (11) through the ultrasonic medium f81 guided from the inlet (9). Ultrasonic waves are transmitted and flaw detection is performed using this.By the way, the material to be tested (
If the outer diameter of 1) changes, remove the cover (71) and
Convert the ring (6) to one with the specified outer diameter.Furthermore, remove the screw (5) and pull out the ultrasonic probe (2).

Convert the spacer (41) to one with a predetermined thickness, and fix the replaced spacer and ultrasonic probe (2) with screws (5).

The distance is set to a predetermined distance corresponding to the specimen (1) whose outer diameter has changed.

[Problem that the invention seeks to solve]

In the conventional inspection equipment as described above, when the outer diameter of the material to be inspected (1) changes, a healthy ultrasonic medium +81 is maintained between the material to be inspected (1) and the ultrasonic probe (2). Ring for (
6) needs to be replaced, and the ultrasonic probe (2)
is directly attached to the cylindrical body (3) through the spacer (4) with the screw (5).
), it takes time and effort to remove all the screws (5) and replace all the spacers (4) with ones of a predetermined thickness.

Therefore, if the outer diameter of the material to be inspected (11) changes frequently, there is a problem in that the efficiency of flaw detection and inspection decreases, which in turn leads to a decrease in production efficiency.

This invention was made in order to solve this problem, and by rotating the guide part, the ultrasonic probe can be easily and quickly set at a predetermined distance between the ultrasonic probe and the specimen. The purpose is to obtain equipment.

[Means for solving problems]

The inspection device according to the present invention rotates a guide section around a cylindrical body, and a pin that rotatably supports an ultrasound probe along a groove provided in the guide section and whose distance from the center of the cylindrical body changes continuously. The position of the ultrasonic probe is changed and the ultrasonic probe inserted toward the center of the cylinder is pressed by the spring along the groove of the guide part, so that a predetermined distance can be set between it and the specimen. This is what I did.

[Effect]

In this invention, when the guide part around the cylindrical body is rotated, a pin that rotationally supports the ultrasonic probe is attached to the guide part by the pressing force of a spring provided between the probe and the support part. The ultrasonic probe moves along a groove whose distance from the center of the cylinder changes continuously, while the ultrasonic probe is inserted into the cylinder toward its center and always moves only toward the center of the cylinder.

The required predetermined distance between the test material and the specimen can be easily and quickly set by simply rotating the guide section.

〔Example〕

FIG. 1 is a sectional view of an inspection apparatus showing an embodiment of the present invention, and FIG. 2 is a view taken in a direction A in which the material to be inspected is conveyed.

Here, (1) to (3) and (6) to (9) are completely the same as the above conventional device. αQ is the ultrasonic probe (
21 is a pin that rotationally supports the pin, αD is a guide portion that slides and guides this pin (11 is a groove C in which the distance from the center of the cylindrical body continuously changes, hereinafter referred to as a groove) α; 413
is a support portion that slides and supports this guide portion αD, (I4
is a spring provided between the ultrasonic probe (2) and the support part a3, and αS is a fixture that fixes the guide part aυ at a predetermined position with respect to the support part a3.

In the inspection device configured as described above.

When the outer diameter of the test material (1) changes and you want to obtain a predetermined distance between the test material (11) and the ultrasonic probe (2), rotating the guide part αD will change the distance between the test material (11) and the ultrasonic probe (2). As the ultrasonic probe (2) inserted toward the center of the body (3) moves only toward the center of the cylindrical body, and the pin α1 moves along the groove a3, the spring a4
As a result, it is pressed against the groove α of the guide portion αD and moves. FIG. 3 shows the rotation angle of the guide part αD.

It shows the relationship between the distance R between the center of the cylinder and the groove,
The rotation angle of the guide part αυ and the distance R between the center of the cylindrical body and the groove
are in a linear relationship, so the test material (1) and the ultrasonic probe (
2) To obtain a predetermined distance between.

The guide portion αD may be rotated by an angle proportional to the angle. Further, FIG. 4 is an enlarged view of the guide portion αB and the fixture α9 viewed from the direction B, and the fixture α is provided with a scale aS indicating the distance R between the center of the cylindrical body and the groove.

The distance between the ultrasonic probe (2) and the specimen (11) can be easily determined by the indicator line αη provided on the guide part (111).Alternatively, the distance R between the center of the cylindrical body and the groove is indicated by a scale. αG is provided on the guide part αD, and the instruction line αη is connected to the fixture α9.
It goes without saying that the same effect can be obtained even if it is provided in Next, after a predetermined distance is obtained between the ultrasonic probe (2) and the test material (1), the guide portion αD is fixed with the fixing tool α.

Therefore, if the outside appearance of the material to be tested changes.

All you have to do is slide the guide part αυ by a predetermined angle so that the distance between the ultrasonic probe (2) and the material to be tested (1) is the same. You can easily set the distance in a short time.

〔Effect of the invention〕

As described above, this invention rotates a guide portion provided with a groove so that a pin that rotatably supports an ultrasonic probe moves along a groove whose distance from the center of a cylindrical body continuously changes. This has the effect of allowing you to set the distance between the ultrasonic probe and the material to be examined with a simple operation. Moreover, it goes without saying that the more ultrasound probes are lined up on the same cross section, the shorter the distance setting time for each ultrasound probe becomes.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing one embodiment of the inspection device according to the present invention, Fig. 2 is a view of the same as seen from the conveying direction A, Fig. 3 is a diagram for explaining its characteristics, and Fig. 4 is one of its features. Enlarged view of part 5
The figure is a sectional view showing a conventional inspection device, and FIG. 6 is a view of the same as seen from the transport direction A. In the figure, (2) is an ultrasound probe, and (3) is a cylindrical body. (61 ring, (71 is cover, C8) is ultrasonic medium, (9) is inlet, 11 is pin, a1+ is guide part,
(L3 is the groove, α3 is the support, α chrysanthemum is the spring, egg is the fixture,
αe is a scale, and αn is an indication line. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Claims] An ultrasonic probe that rotates around a tubular or round bar-shaped test material that is transported straight without rotating, a pin that rotatably supports the ultrasonic probe, and a groove that slides and guides the pin. a guide portion, a support portion that slides and supports the guide portion, a spring provided between the support portion and the probe for pressing the probe against a groove provided in the guide portion; A fixture for fixing the supporting part at a predetermined position; a cylindrical body to which the supporting part is attached and the ultrasonic probe is inserted; a ring inscribed on the outer periphery; a scale provided on the fixture to indicate the distance between the groove provided in the guide portion and the center of the cylindrical body; a groove provided in the fixture and provided in the guide portion and the cylindrical body; An inspection device characterized by comprising an indicator line indicating a set distance from the center.