KR20110017203A - Apparatus for automated scanner of curved surface - Google Patents

Abstract

PURPOSE: An automatic scanner for inspecting a curved part is provided to ensure the reliability of automatic ultrasound and the soundness of a facility since the automatic ultrasound can be accurately performed on the curved part. CONSTITUTION: An automatic scanner for inspecting a curved part comprises a Y-axis driving motor(320), a Y-axis arm adjustment unit(350), gear and belt(306), ball and roller(370) and Y-axis encoder(390). The Y-axis driving motor is directly connected to the body(310) and the Y-axis arm(330) of the automatic scanner. The Y-axis arm adjustment unit adjusts the height difference between the Y-axis arm and the inspected surface of a target. The gear and belt transfers rotating movement from the Y-axis driving motor to a Y-axis arm screw. The gear and belt is formed on the upper end of the Y-axis arm adjustment unit to hold the angle change of the Y-axis arm according to the angle change of the inspected surface.

Description

Automatic scanner device for surface inspection {APPARATUS FOR AUTOMATED SCANNER OF CURVED SURFACE}

The present invention relates to an automatic scanner device for curved surface inspection, and more particularly, to automatically and precisely inspect the curved portion of an automatic scanner using ultrasonic waves, thereby improving the reliability of automatic ultrasonic inspection and the soundness of power generation equipment. An automatic scanner device for ultrasonic examination.

In general, the ultrasonic inspection test is to check the abnormality or soundness of the industrial equipment, it is classified into automatic and manual inspection according to the storage of the ultrasonic signal and the ultrasonic probe movement method. Manual ultrasonic examination is a method in which an inspector inspects an inspection site while moving an ultrasonic probe directly connected to an ultrasound device by hand.

However, the inspection results are influenced by the inspector's skill and site conditions, which raises the issue of the consistency of the inspection results. In addition, the manual ultrasonic examination is because the inspector can check the test results only in the field, it is difficult to prove the objective test results in the future. In order to solve the shortcomings of the manual ultrasonic test, automatic ultrasonic test, an automatic scanner is an essential device for performing the automatic ultrasonic test. Such automatic scanners operate in various forms depending on the type of inspection target and the inspection area.

1 and 2 are diagrams for explaining an automatic scanner operated according to the form and inspection area of a conventional inspection object.

As shown, the conventional automatic scanner is a Y-axis arm 121 to rotate the ultrasonic transducer fixing bundle by the rotation of the Y-axis motor and encoder inside the automatic scanner body 120, the test object in contact with the test object It consists of an ultrasonic probe 123 and the like for transmitting and receiving the ultrasonic signal therein.

When the automatic scanner is positioned on the pressure vessel nozzle 127, the ultrasonic probe 123 inspects the nozzle welding portion 126 of the cylindrical pressure vessel 125, which is an object to be inspected, but the nozzle welding portion 126 of the cylindrical pressure vessel. The angle between the cylindrical pressure vessel 121 and the pressure vessel nozzle 127 is changed from 90 ° to 130 ° according to the geometry during one rotation of the automatic scanner X axis.

In this case, as shown in FIG. 1, the moving distance 128 of the Y-axis arm and the ultrasonic transducer moving distance 129 may coincide with each other. However, as shown in FIG. 2, the automatic scanner is provided at the pressure vessel nozzle 127. When rotated by 90 °, the moving distance 128 of the Y-axis arm 121 of the automatic scanner is different from the moving distance 129 of the actual ultrasonic probe due to the curved surface of the inspection portion, so that the defect cannot be accurately measured. there was.

The present invention is to solve the above conventional problems, when the automatic surface inspection of the curved portion, such as the nozzle welding portion of the cylindrical pressure vessel when the inspection object and the Y-axis arm is not formed in parallel or vertical, the angle is changed Even if it is an object of the present invention to provide an automatic scanner device for automatic ultrasound inspection to ensure that the movement distance of the Y axis arm 310 screw movement distance and the actual ultrasonic transducer on the test object as possible.

In order to achieve the object of the present invention as described above, and to perform the characteristic functions of the present invention described below, features of the present invention are as follows.

According to an aspect of the present invention, the automatic scanner for automatic ultrasonic inspection of the curved portion, the Y-axis drive motor 320 directly connected to the body 310 and the Y-axis arm 330 of the automatic scanner, according to the test object Y-axis arm horizontal adjustment means 350 for adjusting the horizontal height between the Y-axis arm 330 and the inspection surface of the test object, the circular motion generated from the Y-axis drive motor 320 of the screw of the Y-axis arm 330 Gears / formed on the top of the Y-axis arm leveling means 350 to transmit to the Y-axis arm 330 screw in a rotational movement to accommodate the change in the angle of the Y-axis arm 330 according to the change in the angle of the inspection surface End of the Y-axis arm horizontal adjustment means 350 to minimize contact friction between the Y-axis arm horizontal adjustment means 350 and the inspection surface in accordance with the X-axis rotation of the belt 306, the Y-axis arm 330 Ball / roller 370 is formed in the, and directly connected to the fixed bundle 345 of the ultrasonic transducer 375 The scanner device including a Y-axis encoder (390) for controlling the precise movement distance acoustic wave transducer (375) curved portions are provided.

In addition, according to another aspect of the present invention, as an automatic scanner for automatic ultrasonic inspection of the curved portion, the Y-axis drive motor 420 located inside the body 410 of the automatic scanner, the Y-axis drive motor 420 Bevel gear 440 that transmits the generated circular motion to the Y-axis arm 430 screw as a rotational movement of the Y-axis arm 430 screw to accommodate the change in the angle of the Y-axis arm 430 according to the change in the angle of the inspection surface. Y-axis arm horizontal adjustment means 450 for adjusting the horizontal height between the Y-axis arm 430 and the test surface of the test object according to the test object, and the Y-axis according to the X-axis rotation of the Y-axis arm 430 There is provided a scanner device comprising a ball / roller 470 formed at the end of the Y-axis arm leveling means 450 to minimize contact friction between the axis arm leveling means 450 and the inspection surface.

In addition, according to another aspect of the present invention, as an automatic scanner for automatic ultrasonic inspection of the curved portion, the Y-axis drive motor which is located outside the body 510 of the automatic scanner and directly connected to the Y-axis arm 530 ( 520), the Y-axis arm horizontal adjusting means 550 for adjusting the horizontal height between the Y-axis arm 530 and the test surface of the test object according to the test object, and the circular motion generated from the Y-axis driving motor 520. Y-axis arm horizontal adjustment means 550 to transmit to the Y-axis arm 530 screw by the rotational movement of the Y-axis arm 530 to accommodate the change in the angle of the Y-axis arm 530 in accordance with the change in the angle of the inspection surface The Y-axis to minimize contact friction between the Y-axis arm horizontal adjusting means 550 and the inspection surface according to the X-axis rotation of the Y-axis arm 530 Scanner cabinet comprising a ball / roller 570 formed at the end of the arm leveling means 550 It is provided.

According to the present invention, by providing the Y-axis encoder, the Y-axis arm horizontal adjusting means and the ball / roller and the like described above, accurate automatic ultrasonic inspection of the curved inspection portion is possible, so that the reliability and automatic The effect of ensuring soundness is achieved.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[Preferred Embodiments of the Invention]

First embodiment

3A and 3C are views exemplarily showing an automatic scanner device according to a first embodiment of the present invention.

As shown, the automatic scanner device according to the first embodiment of the present invention is a device for automatically inspecting the curved portion of the automatic scanner, the Y-axis drive motor 320, Y-axis arm horizontal adjustment means 350, gears / Belt 306, ball / roller 370, Y-axis encoder 390 and the like.

The Y-axis drive motor 320 of the present invention is located on the outside of the body 310 of the automatic scanner, is formed on the top of the Y-axis arm 330 with the Y-axis arm horizontal adjustment means 350, Y-axis arm Is directly connected to 330.

Y-axis arm horizontal adjustment means 350 of the present invention serves to adjust the horizontal height between the Y-axis arm 330 and the test surface of the test object according to the test object, formed near the top of the Y-axis arm 330 do. The Y-axis arm horizontal adjustment means 350 is preferably made of a screw shape, but is not necessarily limited thereto.

Gear / belt 306 of the present invention serves to transfer the circular motion generated in the Y-axis drive motor 320 to the Y-axis arm 330 screw by the rotational movement of the Y-axis arm 330 screw, inspection It is preferably formed on the top of the Y-axis arm leveling means 350 to accommodate the change in the angle of the Y-axis arm 330 according to the change in the angle of the inspection surface of the object.

Ball / roller 370 of the present invention is Y-axis arm horizontal adjustment means 350 to minimize the contact friction between the Y-axis arm horizontal adjustment means 350 and the inspection surface according to the X-axis rotation of the Y-axis arm 330 Is formed at the end of the. The Y-axis encoder 390 of the present invention serves to directly connect the ultrasonic probe to the ultrasonic probe, which has been directly connected to the Y-axis arm 330, so that the accurate moving distance of the curved surface of the ultrasonic probe can be measured.

In addition, the automatic scanner device according to an embodiment of the present invention, except for the encoder 390 described above formed on the lower end of the Y-axis arm 330, the fixed bundle 345, belt or gear 395 and the spring 396 ) May further include a Y-axis arm rotating shaft 335, a tension spring 380, and a compression spring 385 formed near the Y-axis arm 330.

Looking at the components formed at the bottom of the Y-axis arm 330, the fixed bundle 345 of the present invention, unlike the conventional direct connection with the Y-axis arm 330, spring 396 and Y-axis encoder 390 By way of), the belt or gear 395 of the present invention is coupled to the fixed bundle 345 and the encoder 390, one side is located at the bottom of the fixed bundle 345 when the ultrasonic transducer 375 is moved. The rotation generated from the moving wheel 355 is transmitted to the Y-axis encoder 390 to rotate the Y-axis encoder 390 to serve to measure the moving distance.

The spring 396 of the present invention is formed between the Y-axis arm 330 and the encoder 390, and serves to accommodate the vertical change of the inspection object surface.

Subsequently, with reference to the components formed in the vicinity of the Y-axis arm 330, the Y-axis arm rotation axis 335 of the present invention is formed between the body 310 and the Y-axis arm 330 of the automatic scanner, It serves to rotate the Y-axis arm 330 in one direction. The tension spring 380 and the compression spring 385 of the present invention are positioned on the lower side and the upper side of the Y axis arm 330, respectively, so that the Y axis arm 330 is in close contact with the test surface of the test object.

With such a configuration, in this embodiment, accurate automatic ultrasonic inspection can be performed by making the movement distance 313 of the ultrasonic probe on the curved surface inspection surface and the movement distance 314 of the Y-axis arm screw as close as possible. .

In other words, the body 310 of the automatic scanner is attached to the inspection object and moved to a constant distance on the X axis of the automatic scanner, and then the ultrasonic probe (according to the movement distance 314 of the Y axis arm screw of the Y axis arm 330). 375 is moved to receive the ultrasonic signal. When the angle of the curved portion of the Y-axis arm 330 is changed by the X-axis movement of the automatic scanner, the Y-axis arm 330 is always in close contact with the inspection object by the tension spring 380 and the compression spring 385, Y Y-axis arm 330 and the inspection object by the horizontal axis arm adjustment means 350 will be able to perform an automatic ultrasound while maintaining a constant interval.

Second embodiment

4A and 4B exemplarily illustrate another type of automatic scanner apparatus according to the second embodiment of the present invention.

As shown, the automatic scanner device according to the second embodiment of the present invention is a device for automatically inspecting the curved portion of the automatic scanner, Y-axis drive motor 420, bevel gear 440, axis arm level adjusting means 450, ball / roller 470, tension spring 480, and compression spring 485, and the like.

The Y-axis drive motor 420 of the present invention is powered by a gear 406 located inside the body 410 of the automatic scanner. The bevel gear 440 of the present invention transmits the circular motion generated from the Y-axis drive motor 420 to the Y-axis arm 430 screw by the rotational movement of the Y-axis arm 430 screw, according to the change of the angle of the inspection surface. It serves to accommodate the change in the angle of the Y-axis arm 430.

Y-axis arm horizontal adjustment means 450 and the ball / roller 470, the tension spring 480 and the compression spring 485 of the present invention is the Y-axis arm horizontal adjustment means 350 described in Figures 3a to 3c, Since the ball / roller 370, the tension spring 380 and the compression spring 385 plays the same role, it will be omitted here.

In addition, in the present embodiment, the ultrasonic transducer 475 is coupled to the fixed bundle 445, the fixed bundle 445 has a structure coupled to the Y-axis arm 430, the encoder 490 is a Y-axis drive motor ( Is connected to one end of 420.

Third embodiment

5A to 5B are views exemplarily showing another type of automatic scanner apparatus according to the third embodiment of the present invention.

As shown, the automatic scanner device according to the third embodiment of the present invention is a Y-axis drive motor 520, Y-axis arm level adjusting means 550, gear / belt 506, ball / roller 570, Y-axis arm rotation shaft 535, tension spring 580, compression spring 585 and the like.

Among the components, the Y-axis drive motor 520, the Y-axis arm rotation shaft 535, and the gear / belt 506 have the same structure and characteristics as the corresponding components described in FIGS. 3A and 3C, and the Y-axis arm Leveling means 350, ball / roller 370, tension spring 380 and compression spring 385 have the same role and position as the corresponding components described in FIGS. 3A-4B, and are described herein. Omit. In addition, the ultrasonic transducer 575 and the fixed bundle 545 have the same structure as the ultrasonic probe 375 and the fixed bundle 345 described in FIGS. 3A and 3C. However, the encoder 590 in this embodiment is formed in the Y-axis drive motor 520 formed outside.

Therefore, in the present embodiment, similarly to FIGS. 3A to 3C, the automatic ultrasonic inspection is precisely performed by approximating the ultrasonic transducer movement distance and the Y-axis arm screw movement distance of the curved surface inspection surface as much as possible during the automatic inspection.

FIG. 6 is a three-dimensional view of the automatic scanner device according to an embodiment of the present invention, showing that the automatic scanner device described with reference to FIGS. 3A to 3C is shown in three dimensions.

Fourth embodiment

7 is a block diagram showing an automatic ultrasound inspection system according to a fourth embodiment of the present invention.

As shown in FIG. 7, the automatic ultrasound inspection system 700 according to the fourth embodiment of the present invention includes an automatic ultrasound inspection program 710, an automatic scanner device 720, an automatic ultrasound inspection equipment 730, and a LAN ( LAN) 740 and the automatic scanner cable 750, and various types of automatic scanner apparatus 720 may be applied according to the type and inspection part of the inspection target, but the automatic scanner described with reference to FIGS. 3A to 6 The device is applied.

The automatic ultrasound test program 710 of the present invention is software for controlling the automatic ultrasound test equipment 730 and displaying the acquired ultrasound signal in the form of an image. The automatic ultrasound inspection apparatus 730 of the present invention is responsible for generation and acquisition of an ultrasonic signal, and the automatic scanner device 720 of the present invention automatically generates a predetermined inspection range by a control signal received from the automatic ultrasound inspection apparatus 730. It will move to perform its original function.

Accordingly, the inspector can check the health of the inspection object from the ultrasonic signal image acquired by the automatic ultrasound inspection program 710. Here, the automatic ultrasound test equipment 730 and the automatic scanner device 300 are connected to the scanner cable 750, the automatic ultrasound test program 710 and the automatic ultrasound test equipment 730 to the LAN (LAN) 740 Connected.

As described above, the technical configuration of the present invention described above will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

1 and 2 are diagrams for explaining an automatic scanner operated according to the form and inspection area of a conventional inspection object.

3A and 3C are views exemplarily showing an automatic scanner device according to a first embodiment of the present invention.

4A and 4B exemplarily illustrate another type of automatic scanner apparatus according to the second embodiment of the present invention.

5A to 5B are views exemplarily showing another type of automatic scanner apparatus according to the third embodiment of the present invention.

6 is a three-dimensional view of the automatic scanner device according to an embodiment of the present invention.

7 is a block diagram showing an automatic ultrasound inspection system according to a fourth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

306: gear / belt 310: the body of the automatic scanner

320: Y axis drive motor 330: Y axis arm

350: Y-axis arm horizontal adjustment means 370: ball / roller

390 Y-axis encoder

Claims (9)

As an automatic scanner for automatic ultrasonic inspection of curved parts, Y-axis drive motor 320 is directly connected to the body 310 and Y-axis arm 330 of the automatic scanner, Y-axis arm horizontal adjustment means 350 for adjusting the horizontal height between the Y-axis arm 330 and the test surface of the test object according to the test object, The circular motion generated by the Y-axis driving motor 320 is transmitted to the Y-axis arm 330 screw by the rotational movement of the Y-axis arm 330 screw, so that the Y-axis arm 330 of the Y-axis arm 330 is changed according to the angle change of the inspection surface. A gear / belt 306 formed at the top of the Y-axis arm leveling means 350 to accommodate the angular change, Ball / formed at the end of the Y-axis arm horizontal adjustment means 350 to minimize contact friction between the Y-axis arm horizontal adjustment means 350 and the inspection surface in accordance with the X-axis rotation of the Y-axis arm 330 Roller 370, and Y-axis encoder 390 is directly connected to the fixed bundle 345 of the ultrasonic transducer 375 to control the exact moving distance of the curved portion of the ultrasonic transducer 375 Scanner device comprising a The method of claim 1, The automatic scanner, A scanner device, which is formed between the body (310) and the Y-axis arm (330), further comprises a Y-axis arm rotating shaft (335) for rotating the Y-axis arm (330) in one direction. The method of claim 1, The automatic scanner, The Y-axis arm 330 further includes a tension spring 380 and a compression spring 385 respectively positioned on the lower side and the upper side of the Y-axis arm 330 to be in close contact with the test surface of the test object. Scanner device. The method of claim 1, The automatic scanner, When the ultrasonic transducer 375 moves, a belt for transmitting the rotation generated from the moving wheel 355 located below the fixed bundle 345 to the Y-axis encoder 390 to rotate to measure the moving distance, or With the gear 395, And a spring (396) formed between the Y-axis encoder (390) and the Y-axis arm (330) to accommodate the vertical change of the surface of the test object. As an automatic scanner for automatic ultrasonic inspection of curved parts, Y-axis drive motor 420 located inside the body 410 of the automatic scanner, The circular motion generated from the Y-axis driving motor 420 is transmitted to the Y-axis arm 430 screw by the rotational movement of the Y-axis arm 430 screw, and the angle of the Y-axis arm 430 according to the change of the angle of the inspection surface. Bevel gear 440 to accommodate change, Y-axis arm horizontal adjustment means 450 for adjusting the horizontal height between the Y-axis arm 430 and the test surface of the test object according to the test object, and  Ball / formed at the end of the Y-axis arm horizontal adjustment means 450 to minimize contact friction between the Y-axis arm horizontal adjustment means 450 and the inspection surface in accordance with the X-axis rotation of the Y-axis arm 430 Roller 470 Scanner device comprising a. The method of claim 5, The automatic scanner, The Y axis arm 430 further includes a tension spring 480 and a compression spring 485 respectively positioned on the lower and upper sides of the Y axis arm 430 such that the Y axis arm 430 is in close contact with the test surface of the test object 460. Scanner apparatus, characterized in that. As an automatic scanner for automatic ultrasonic inspection of curved parts, Y-axis drive motor 520 located outside the body of the automatic scanner, and directly connected to the Y-axis arm 530, Y-axis arm horizontal adjustment means 550 for adjusting the horizontal height between the Y-axis arm 530 and the test surface of the test object according to the test object, The circular motion generated from the Y-axis driving motor 520 is transmitted to the Y-axis arm 530 screw by the rotational movement of the Y-axis arm 530 screw, so that the Y-axis arm 530 of the Y-axis arm 530 is changed according to the angle change of the inspection surface. A gear / belt 506 formed at the top of the Y-axis arm leveling means 550 to accommodate the change in angle, and Ball / formed at the end of the Y-axis arm horizontal adjustment means 550 to minimize contact friction between the Y-axis arm horizontal adjustment means 550 and the inspection surface according to the X-axis rotation of the Y-axis arm 530 Roller 570 Scanner device comprising a. The method of claim 7, wherein The automatic scanner, The Y-axis arm rotating shaft (535) for rotating the Y-axis arm (530) in one direction on the body (510) and Y-axis arm (530) is further formed. The method of claim 7, wherein The automatic scanner, The Y-axis arm 530 further includes a tension spring 580 and a compression spring 585 located on the lower and upper sides of the Y-axis arm 530 so as to be in close contact with the test surface of the test object 560. Scanner apparatus, characterized in that.

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