JPS62121351A - Inspecting device - Google Patents

Abstract

PURPOSE:To set a distance between an ultrasonic probe and a material to be inspected, by rotating a guide part for moving up and down continuously the ultrasonic probe. CONSTITUTION:The titled device is provided with an ultrasonic probe 10, a guide part 11, a gear part, and a fixture 14, etc. In this state, in case the outside diameter of a material to be inspected 1 is changed and it is desired to obtain a prescribed distance between the material to be inspected 1 and the probe 10, when a guide part 11 is rotated, a gear part 12 having a spur gear which has been engaged with an internal gear of the guide part 11 is rotated. Subsequently, the probe 10 moves up and down continuously in the central direction of a cylindrical body through a pinion provided ion a different end of the gear part 12. Next, after the prescribed distance has been obtained between the probe 10 and the material to be inspected 1, the guide part 11 is fixed by the fixture 14. Accordingly, in case the outside diameter of the material to be inspected 1 has been changed, the guide part 11 is slid by a prescribed angle so that a prescribed distance is obtained between the probe 10 and the material to be inspected 1. In this way, a distance of the probe 10 can be set easily and in a short period.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention uses an ultrasonic probe that rotates around a tubular or round bar-shaped test material that is transported straight without making one revolution to measure the outer periphery of the test material. This invention relates to easily setting the distance between an ultrasonic probe and a material to be inspected in a short time in an inspection device that performs flaw detection by scanning spirally.

[Conventional technology]

FIG. 3 is a sectional view showing a conventional inspection device.

FIG. 4 is a view of a tubular or round rod-shaped test material (1) that is transported straight without rotation, as seen from the transport direction A.

(2) is an ultrasonic probe that rotates around the test material (1);
(3) is a cylindrical body into which an ultrasound probe is inserted, (4
1kj To set the test material (1) and the ultrasonic probe (2) at a predetermined distance, place &'! between the ultrasonic probe (2) and the cylindrical body (3). The spacer to be inserted, (5) is the ultrasonic probe (
2) and spacer (4), screws to fix them all to the cylinder (3) at the same time, (6) t':! rings provided at both ends of the cylindrical body (3) and inscribed in the outer periphery of the test material (1);
'! Cover for fixing IJ song 6) to cylindrical body (3)K
To 181'! Test material (1), cylindrical body (3), and ring (6
), and (9) is an inlet for feeding the ultrasonic medium.

The conventional inspection apparatus is configured as described above, and the ultrasonic probe (2) rotating around the specimen material (11) is inserted into the inlet port (9) when the specimen material (11) is transported in the transport direction AK. ) The specimen material (IIK ultrasonic waves are propagated through the ultrasonic medium (8:) and inspected for flaws.

By the way, if the outer diameter of the test material (11) changes, the cover (
7), remove the ring (6), replace it with the specified outer diameter, remove the screw (5), pull out the ultrasonic probe (2), and replace the spacer (4) with one of the specified thickness. Fix the replaced spacer and ultrasonic probe (2) with screws (5).

Set to a predetermined distance corresponding to the specimen material with a different outer diameter +11K.

[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 (8) is placed between the material to be inspected (1) and the ultrasonic probe (2). To hold the ring (6), first replace the ring (6), then remove all the screws (5) that directly fix the ultrasonic probe (2) via the cylindrical body (3) and the K spacer (4). There is a time-consuming task of replacing all the spacers (4) with ones of the specified thickness.
If the outer diameter of the test material +11 changes frequently due to this long time, VC has a problem in that the efficiency of flaw detection decreases, which in turn leads to a decrease in production efficiency.

This invention was made to solve this problem, and by rotating the guide part, the ultrasonic probe can be easily and quickly set at a predetermined distance from 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, rotates a gear section having a spur gear that meshes with an internal gear of the guide section, and transmits an ultrasonic probe through a pinion of the gear section. 9 from K that the rack moves up and down continuously.
The ultrasonic probe inserted toward the center of the cylindrical body is moved to set a predetermined distance between the probe and the specimen.

[Effect]

In this invention, when the guide part around the two cylindrical bodies is rotated, a gear part having a spur gear that meshes with an internal gear of the guide part rotates, and a rack of the ultrasonic probe is rotated via a pinion on the other side of the gear part. Continuously moves up and down, causing the ultrasound probe to move up and down.On the other hand, the ultrasound probe is inserted into the cylindrical body toward its center, and always moves only toward the center of the cylindrical body. Therefore, it is possible to easily set a predetermined distance between the ultrasonic probe and the specimen in a short time.

[Real example]

FIG. 1 is a sectional view showing an embodiment of the present invention.
+1>, (31 is exactly the same as the conventional device described above. α0 is an ultrasonic probe having a rack on the outer surface.

++1) is a guide part that slides into the cylindrical body (3) and has an internal gear; α2 has a pinion that engages with the rank of the a value of the ultrasonic probe at one end; and the guide part at the other end. αJ is a gear portion that has a spur gear that meshes with the internal gear of αD and is connected by a shaft; αJ is a support portion that rotatably supports the gear portion σX5 and is fixed to the cylindrical body (3);
←This is a fixture that fixes the guide portion α11 at a predetermined position with respect to the support portion (13VC).

In the inspection device configured as above, &co.

When the outer diameter of the test material (1) changes and you want to obtain a predetermined distance between the test material fil and the ultrasonic probe 00, rotating the guide part +111 causes the internal gear of the guide part αυ to Gear part α2 having meshed spur gears rotates, and gear part α2
The ultrasonic probe 01 continuously moves up and down toward the center of the cylindrical body via a pinion provided at the opposite end of the cylindrical body. Next, after a predetermined distance is obtained between the ultrasonic probe section and the material to be inspected (1), the guide section αυ is fixed with the fixture α4.

Therefore, when the outer diameter of the test material (1) changes.

All you need to do is simply slide the kite part Ql) by a predetermined angle so that the distance between the ultrasonic probe α1 and the test material (1) is a predetermined distance. 1
1 can be easily set in a short time.

〔Effect of the invention〕

As explained above, this invention has the advantage that the distance between the ultrasonic probe and the material to be examined can be set by a simple operation of rotating the guide part to continuously move the ultrasonic probe up and down. be. Also, the more ultrasound probes are lined up on the same cross section.

Needless to say, the distance setting time for each ultrasonic probe becomes shorter.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of the present invention, FIG. 2 is a view of FIG. 1 viewed from the transport direction A, FIG. 3 is a sectional view showing a conventional inspection device, and FIG. FIG. 3 is a view of FIG. 3 viewed from the conveying direction A. In the figure, (1) is the test material, (31 & 2 cylindrical body, α
G is an ultrasonic probe, ttll is a guide part, α2 is a gear part, α3 is a support part, and 041 is a fixture. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] An ultrasonic probe with an outer surface that rotates around a tubular or round bar-shaped test material that is transported straight without rotating, scans the outer circumference of the test material in a spiral pattern for flaw detection. The inspection device includes a cylindrical body into which the ultrasonic probe is inserted, a guide portion that slides into the cylindrical body and has an internal gear, and a pinion that engages with the rack of the ultrasonic probe at one end. , a gear part having a spur gear meshing with an internal gear of the guide part at the other end and connected by a shaft, a support part that rotatably supports the gear part and is fixed to the cylindrical body, and the guide part. a fixture that fixes the supporting part at a predetermined position; a ring that is provided at both ends of the cylindrical body and inscribed in the outer periphery of the specimen; and a ring that is surrounded by the specimen, the cylindrical body, and the ring. An inspection device characterized by comprising: an ultrasonic medium formed by