Eddy current flaw detection tool

Abstract

The utility model relates to the technical field of workpiece flaw detection, in particular to an eddy current flaw detection tool. According to the invention, the two rotating mechanisms are symmetrically installed on the detection table, the rotating seat of each rotating mechanism is provided with an electric clamping mechanism composed of a clamping plate, a sliding groove, a third motor, a main gear, a driven gear and a screw rod, and the design of an adjusting mechanism is matched. The cylindrical workpiece can be rapidly limited in an electric clamping mode in the detection process, and the eddy current detection mechanism can be moved to the other rotating mechanism under the action of the adjusting mechanism when the detected cylindrical workpiece on one rotating mechanism is replaced. Therefore, the eddy current detection mechanism can carry out eddy current flaw detection on the end part of the columnar workpiece to be detected on the other rotating mechanism, the downtime of the device when the columnar workpiece is replaced is effectively shortened, the eddy current flaw detection process of the columnar workpiece is more continuous, and the detection efficiency is higher.

Description

Technical Field

[0001] This application relates to the field of workpiece flaw detection technology, and in particular to an eddy current flaw detection tooling. Background Technology

[0002] During the workpiece processing, non-standard processing techniques can easily lead to the presence of cracks and bubbles inside the workpiece after processing. In order to detect the defects inside the workpiece in a timely manner, it is often necessary to use eddy current testing equipment to inspect the workpiece after processing.

[0003] The current testing fixture for eddy current flaw detection of internal cracks at the ends of cylindrical workpieces mainly consists of a testing table, a rotating mechanism mounted on the testing table, a manual three-jaw chuck mounted on the rotating mechanism, an eddy current detector mounted on one side of the testing table, and a lifting mechanism mounted on the testing table. When detecting internal cracks in cylindrical workpieces, the cylindrical workpiece is first placed vertically on the rotating mechanism and limited by the manual three-jaw chuck. Then, the detection probe on the eddy current detector is brought close to the cylindrical workpiece, and the rotating mechanism is started. As the cylindrical workpiece rotates, the detection probe on the eddy current detector body moves up and down along the surface of the cylindrical workpiece, thereby realizing the detection of internal cracks at the ends of the cylindrical workpiece.

[0004] While existing eddy current testing fixtures can detect internal cracks at the ends of cylindrical workpieces, the manual limiting method during testing makes the installation process of limiting the cylindrical workpiece cumbersome. Furthermore, since the testing table typically only has one rotating mechanism and a manual three-jaw chuck, the time spent changing cylindrical workpieces during testing can lead to prolonged downtime of the device, resulting in an uninterrupted eddy current testing process for cylindrical workpieces and low testing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide an eddy current testing fixture that can achieve rapid positioning of cylindrical workpieces during testing through electric clamping and reduce device downtime through alternating testing, thereby ensuring the continuity of the eddy current testing process at the end of the cylindrical workpiece.

[0006] The above-mentioned objective of this application is achieved through the following technical solution:

[0007] An eddy current flaw detection fixture includes a testing platform. Two rotating mechanisms are symmetrically mounted on both sides of the top of the testing platform. Each rotating mechanism includes a second motor and a rotating base. An electric clamping mechanism is mounted on the rotating base. The electric clamping mechanism includes a clamping plate, a sliding groove, a third motor, a main gear, a driven gear, and a screw. There are four sliding grooves arranged in a ring on the rotating base. Each sliding groove contains a screw, and the clamping plate is mounted on the screw. The driven gear is connected to the power output end of the screw. The main gear is located between the four driven gears. The third motor is connected to the axle of the main gear. A bracket is mounted on one side of the top of the testing platform. An adjusting mechanism is mounted on the bracket. The adjusting mechanism includes a lifting plate, a first motor, a screw, and an electric slide rail. A support plate is mounted on a sliding block on the electric slide rail. An eddy current detection mechanism is mounted on the support plate. The eddy current detection mechanism includes an eddy current flaw detector body and an eddy current detection probe.

[0008] Optionally, the bracket has an inverted U-shaped structure and is connected to the testing station.

[0009] Optionally, the second motor is bolted to the bracket, and the second motor is connected to the rotating seat coupling.

[0010] Optionally, the main gear meshes with the driven gear, and the driven gear is welded to the lead screw.

[0011] Optionally, the screw passes through the clamping plate and is threadedly connected to the clamping plate, and the top of the clamping plate extends out of the upper side of the rotating seat.

[0012] Optionally, the first motor is located at the center of the top of the bracket, and the screw is connected to the power output end of the first motor.

[0013] Optionally, the screw passes through the lifting plate and is threadedly connected to the lifting plate, and the lifting plate is slidably engaged with the bracket.

[0014] Optionally, the electric slide rail is arranged along the length of the lifting plate.

[0015] Optionally, the eddy current flaw detector body is bolted to the support plate, and the detection probe is bolted to the end of the support plate opposite to the electric slide rail.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] This invention features two symmetrically mounted rotating mechanisms on a testing platform. Each rotating mechanism has an electrically operated clamping mechanism on its rotating seat, consisting of a clamping plate, a sliding groove, a motor, a main gear, a driven gear, and a screw. Combined with an adjusting mechanism, this design not only enables rapid positioning of the cylindrical workpiece during testing via electric clamping, but also allows the eddy current testing mechanism to be moved to the other rotating mechanism when replacing a tested cylindrical workpiece on one mechanism. This allows the eddy current testing mechanism to perform eddy current flaw detection on the end portion of the cylindrical workpiece to be tested on the other rotating mechanism, effectively reducing downtime when replacing cylindrical workpieces and making the eddy current flaw detection process more continuous and efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure provided in the embodiments of this application;

[0019] Figure 2 This is a front sectional view of the support and rotating mechanism provided in the embodiments of this application;

[0020] Figure 3 This is provided by the embodiments of this application. Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the lifting plate provided in the embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Support; 2. Testing table; 3. Rotating mechanism; 31. Rotating seat; 32. Motor II; 4. Support; 5. Support plate; 6. Adjusting mechanism; 61. Lifting plate; 62. Motor I; 63. Screw; 64. Electric slide rail; 7. Electric clamping mechanism; 71. Clamping plate; 72. Slide groove; 73. Motor III; 74. Main gear; 75. Driven gear; 76. Lead screw; 8. Eddy current testing mechanism; 81. Eddy current flaw detector body; 82. Eddy current testing probe. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] To better understand the technical solutions presented in the embodiments of this application, the structure and working principle of existing detection fixtures for eddy current testing of internal cracks at the end of columnar workpieces will be introduced first.

[0025] The existing testing fixture for eddy current flaw detection of internal cracks at the end of columnar workpieces mainly consists of a testing table, a rotating mechanism mounted on the testing table, a manual three-jaw chuck mounted on the rotating mechanism, an eddy current detector mounted on one side of the testing table, and a lifting mechanism mounted on the testing table. When detecting internal cracks in a columnar workpiece, the columnar workpiece is first placed vertically on the rotating mechanism and limited by the manual three-jaw chuck. Then, the detection probe on the eddy current detector is brought close to the columnar workpiece, and the rotating mechanism is started. As the columnar workpiece rotates, the detection probe on the eddy current detector body moves up and down along the surface of the columnar workpiece, thereby realizing the detection of internal cracks at the end of the columnar workpiece.

[0026] Please see Figure 1 , Figure 3 and Figure 4 This application discloses an eddy current flaw detection fixture, including a testing table 2. Two rotating mechanisms 3 are symmetrically mounted on both sides of the top of the testing table 2. Each rotating mechanism 3 includes a second motor 32 and a rotating base 31. An electric clamping mechanism 7 is mounted on the rotating base 31. The electric clamping mechanism 7 includes a clamping plate 71, a sliding groove 72, a third motor 73, a main gear 74, a driven gear 75, and a screw 63. There are four sliding grooves 72 arranged in a ring on the rotating base 31. Each sliding groove 72 contains a screw 63. A screw 63 is mounted on the screw 63. The test bench 2 is equipped with a clamping plate 71, a driven gear 75 connected to the power output end of the screw 63, a main gear 74 located between the four driven gears 75, and a motor 73 connected to the axle of the main gear 74. A bracket 1 is installed on one side of the top of the test bench 2, and an adjustment mechanism 6 is installed on the bracket 1. The adjustment mechanism 6 includes a lifting plate 61, a motor 62, a screw 63, and an electric slide rail 64. A support plate 5 is installed on the sliding block on the electric slide rail 64, and an eddy current detection mechanism 8 is installed on the support plate 5. The eddy current detection mechanism 8 includes an eddy current flaw detector body 81 and an eddy current detection probe 82.

[0027] Specifically, when a columnar workpiece needs to be replaced after the end crack detection on one rotating mechanism 3 is completed, the eddy current detection probe 82 is first moved to the columnar workpiece to be tested on another rotating mechanism 3 under the action of the electric slide rail 64. Then, the eddy current flaw detector body 81 is started, and the new columnar workpiece to be tested can be tested again with eddy current flaw detection. At the same time, the clamping plate 71 on the electric clamping mechanism 7 of the already tested columnar workpiece can be released to facilitate the replacement of the tested columnar workpiece. This effectively shortens the downtime of the device during the testing of columnar workpieces and ensures the continuity of the testing process.

[0028] Please see Figure 1 and Figure 4 The support 1 has an inverted U-shaped structure and is connected to the testing platform 2.

[0029] As one implementation method, the inverted U-shaped bracket 1 provides sufficient installation space for the motor, ensuring the normal start-up and use of the motor 32.

[0030] Please see Figure 1 Motor 2 32 is bolted to bracket 1, and motor 2 32 is connected to rotating seat 31 by coupling.

[0031] As one implementation method, the bolted connection fixation method allows the rotating seat 31 to rotate easily under the action of the motor 32, so as to adjust the rotation of the clamped cylindrical workpiece and ensure that the cylindrical workpiece is probed all around.

[0032] Please see Figures 1-2 The main gear 74 meshes with the driven gear 75, and the driven gear 75 is welded to the lead screw 76.

[0033] In one implementation, the main gear 74 is meshed with the driven gear 75, and the driven gear 75 is welded to the lead screw 76, so that the lead screw 76 can be rotated by means of the driven gear 75 after the main gear 74 rotates.

[0034] Please see Figure 1 The screw 63 passes through the clamping plate 71 and is threadedly connected to the clamping plate 71. The top of the clamping plate 71 extends out of the upper side of the rotating seat 31.

[0035] In one implementation, after the lead screw 76 rotates, the clamping plate 71 moves along the slide groove 72 under the guidance of the threaded transmission and the slide groove 72. While the clamping plate 71 moves along the slide groove 72, it clamps and limits the cylindrical workpiece. The part of the clamping plate 71 that extends out of the rotating seat 31 is the main part that clamps and limits the cylindrical workpiece.

[0036] Please see Figure 1 Motor 62 is located at the top center of bracket 1, and screw 63 is connected to the power output end of motor 62.

[0037] In one implementation, motor 62 is mainly used to provide power for the rotation of screw 63 to ensure that screw 63 rotates normally.

[0038] Please see Figures 1-2 The screw 63 passes through the lifting plate 61 and is threadedly connected to the lifting plate 61. The lifting plate 61 is slidably engaged with the bracket 1.

[0039] In one implementation, after the screw 63 rotates, it will cause the lifting plate 61 to rise and fall along the bracket 1 under the action of thread transmission, so that during the rising and falling of the lifting plate 61, the end crack of the columnar workpiece can be detected by means of the eddy current detection probe 82.

[0040] Please see Figures 1-2The electric slide rail 64 is set along the length of the lifting plate 61.

[0041] As one implementation method, the electric slide rail 64 is set along the length direction of the lifting plate 61, which can ensure the convenient movement of the eddy current detection probe 82 along the length direction of the detection table 2. This ensures that after detecting a cylindrical workpiece on one rotating mechanism 3, the eddy current detection probe 82 can be moved to an undetected cylindrical workpiece on another rotating mechanism 3 under the action of the electric slide rail 64, so that the eddy current detection probe 82 can continue to detect the cylindrical workpiece.

[0042] Please see Figures 1-2 The eddy current flaw detector body 81 is bolted to the support plate 5, and the detection probe is bolted to one end of the support plate 5 opposite to the electric slide rail 64.

[0043] In one implementation, the eddy current flaw detector body 81 can analyze and display the information detected by the eddy current detection probe 82, and issue an alarm when there is a crack on the back of the end of the columnar workpiece.

[0044] The specific working principle is as follows: When inspecting the end of a cylindrical workpiece, the workpiece is first placed vertically on the rotating seat 31 of the two rotating mechanisms 3. Then, under the action of motor 73, the main gear 74 rotates, so that the driven gear 75 rotates the lead screw 76 during the rotation of the main gear 74. After the lead screw 76 rotates, the clamping plate 71 moves closer to the outside of the placed cylindrical workpiece under the action of thread transmission, so as to achieve clamping and limiting of the cylindrical workpiece. After the cylindrical workpiece is clamped, the screw 63 rotates under the action of motor 62, so that the lifting plate 61 is adjusted to the corresponding detection height during the rotation of the screw 63. Then, under the action of electric slide rail 64, the eddy current detection probe 82 is aligned with the detection part of the end of the cylindrical workpiece, and the eddy current flaw detector body 81 is started, so that the end of the cylindrical workpiece can be inspected by eddy current flaw detection. The detection result will be... The eddy current flaw detector body 81 displays the results and issues an alarm when abnormalities occur. When a columnar workpiece needs to be replaced after the end crack detection on one rotating mechanism 3 is completed, the eddy current detection probe 82 is first moved to the columnar workpiece to be tested on another rotating mechanism 3 by the electric slide rail 64. Then, the eddy current flaw detector body 81 is started, and the new columnar workpiece can be tested again with eddy current flaw detection. At the same time, the clamping plate 71 on the electric clamping mechanism 7 of the already tested columnar workpiece can be released to facilitate the replacement of the tested columnar workpiece. This effectively shortens the downtime of the device during the testing of columnar workpieces, ensures the continuity of the testing process, and effectively reduces the downtime of the device when replacing columnar workpieces, making the eddy current flaw detection efficiency of columnar workpieces higher.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An eddy current flaw detection fixture, characterized in that: The test platform (2) includes two rotating mechanisms (3) symmetrically mounted on both sides of its top end. Each rotating mechanism (3) includes a motor (32) and a rotating seat (31). An electric clamping mechanism (7) is mounted on the rotating seat (31). The electric clamping mechanism (7) includes a clamping plate (71), a sliding groove (72), a motor (73), a main gear (74), a driven gear (75), and a screw (63). There are four sliding grooves (72), which are arranged in a ring on the rotating seat (31). Each sliding groove (72) contains a screw (63), and the clamping plate (71) is mounted on the screw (63). The wheel (75) is connected to the power output end of the screw (63), the main gear (74) is located between the four driven gears (75), and the motor (73) is connected to the axle of the main gear (74); a bracket (1) is installed on one side of the top of the test platform (2), and an adjustment mechanism (6) is installed on the bracket (1). The adjustment mechanism (6) includes a lifting plate (61), a motor (62), a screw (63), and an electric slide rail (64). A support plate (5) is installed on the sliding block on the electric slide rail (64), and an eddy current detection mechanism (8) is installed on the support plate (5). The eddy current detection mechanism (8) includes an eddy current flaw detector body (81) and an eddy current detection probe (82).

2. The eddy current flaw detection fixture according to claim 1, characterized in that: The bracket (1) has an inverted U-shaped structure and is connected to the testing platform (2).

3. The eddy current flaw detection fixture according to claim 2, characterized in that: The second motor (32) is bolted to the bracket (1), and the second motor (32) is connected to the rotating seat (31) by a coupling.

4. The eddy current flaw detection fixture according to claim 1, characterized in that: The main gear (74) meshes with the driven gear (75), and the driven gear (75) is welded to the lead screw (76).

5. The eddy current flaw detection fixture according to claim 4, characterized in that: The screw (63) passes through the clamp (71) and is threadedly connected to the clamp (71), with the top of the clamp (71) extending out of the upper side of the rotating seat (31).

6. The eddy current flaw detection fixture according to claim 1, characterized in that: The motor (62) is located at the top center of the bracket (1), and the screw (63) is connected to the power output end of the motor (62).

7. The eddy current flaw detection fixture according to claim 6, characterized in that: The screw (63) passes through the lifting plate (61) and is threadedly connected to the lifting plate (61), and the lifting plate (61) slides with the bracket (1).

8. The eddy current flaw detection fixture according to claim 1, characterized in that: The electric slide rail (64) is arranged along the length of the lifting plate (61).

9. The eddy current flaw detection fixture according to claim 8, characterized in that: The eddy current flaw detector body (81) is bolted to the support plate (5), and the detection probe is bolted to the end of the support plate (5) facing away from the electric slide rail (64).

Images