A kind of arc burn quick detection clamp

Abstract

The application discloses a kind of anti-arc burn quick detection clamps, including positioning member and electrifying pipe, the positioning member is detachably connected at the two ends of the electrifying pipe, keyway for installing the positioning member on the magnetic particle flaw detector chuck is equipped on the positioning member.The positioning member is installed on the magnetic particle flaw detector chuck using keyway in the application, and the detachable connection of the positioning member and the electrifying pipe, the rigidity of the overall structure of the clamp and the fit of the clamp and chuck and the part to be measured is guaranteed, the problems such as manual alignment and multi-person cooperation of the clamp need to be manually held in the past are solved, and the operation is more simple, and clamping is more efficient.

Description

Technical Field

[0001] This invention relates to the field of magnetic particle testing technology, and in particular to a rapid detection fixture for preventing electric arc burns. Background Technology

[0002] Magnetic particle testing is an essential method for quality control in the grinding of steel parts such as gears. Design drawings for gears and other steel parts in the aerospace, aviation, and shipbuilding industries all require magnetic particle testing. Circumferential magnetization in magnetic particle testing requires applying an appropriate magnetizing current value based on the outer diameter of the part to detect defects. Generally, the larger the outer diameter, the larger the required magnetizing current value. Taking the commonly used alternating current residual magnetization method as an example, HB 20158-2014 requires a circumferential magnetizing current value of (20~32) times the outer diameter.

[0003] There is a component to be tested, part 4, which is a blind hole part with a large gear disc and a small outer diameter. Its typical structure is as follows: Figure 1 As shown, the outer circumference is stepped, including a large outer circle 41 and a small outer circle 42. The diameter of the large outer circle 41 is larger than the diameter of the small outer circle 42. A large toothed disk 411 is provided on the outer circumference of the large outer circle 41, and a blind hole 412 is opened in the large outer circle 41 along the axial direction. Due to the special structure, the range of available magnetizing current values ​​is limited. The part under test 4 cannot be magnetized using an auxiliary center conductor; the magnetizing current must pass directly through the part. The range of available magnetizing current values ​​for the small outer circle 42 and the large toothed disk 411 do not overlap. The large toothed disk 411 requires a large current to ensure the magnetization effect (e.g., Figure 1 The large gear disk 411 shown requires a magnetization current of over 1200A. However, such a high current can easily cause arc burns on the small outer diameter 42, making it difficult to balance detection reliability and arc burn prevention. For such parts, segmented magnetization is necessary, where the large gear disk 411 is magnetized by applying current. Currently, methods such as appropriately reducing the magnetizing current and using simple copper tubing to assist magnetization are employed, as seen in Chinese invention patent CN209589932U. However, this structure is only suitable for simple, regular bolt parts and is not suitable for the part 4 under test in this application, because the small outer diameter 42 will contact the inner wall of the copper tubing, posing a risk of arc burns. Reducing the magnetizing current affects reliability and increases the risk of arc burns. Using simple copper tubing to assist magnetization presents challenges such as difficulty in aligning the clamping position, the need for multiple people to work together, and the need for repeated current adjustments, all of which affect detection efficiency and reliability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an arc burn-proof rapid detection fixture that is easy to operate, quick to install and remove, and prevents arc burns, thereby improving detection efficiency and reliability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides a rapid detection fixture for arc burns, including a positioning component and an energizing tube. The positioning component is detachably connected to both ends of the energizing tube. The positioning component is provided with a keyway for mounting the positioning component onto the chuck of a magnetic particle flaw detector.

[0006] Preferably, the positioning element includes a clamping section, a fixing section, and a transition section connected in sequence, with the clamping section and the fixing section disposed opposite to each other on both sides of the transition section, and the space between the clamping section, the fixing section, and the transition section being the keyway.

[0007] Preferably, the fixed section is provided with fasteners, and the positioning element is fixed to the magnetic particle inspection machine chuck by the fasteners.

[0008] Preferably, the fastener is a screw or bolt.

[0009] Optionally, the rapid arc burn detection fixture further includes a rigid conductive threaded sleeve, the two ends of which are threadedly connected to the energized tube and the positioning element, respectively.

[0010] Optionally, the threaded sleeve is a copper threaded sleeve or an aluminum threaded sleeve.

[0011] Preferably, the energizing tube is a hollow tube comprising two symmetrically arranged tubes capable of clamping the part to be tested, and an installation groove is provided on the outer peripheral wall of the energizing tube to facilitate the installation of the part to be tested, and the part to be tested is located inside the energizing tube.

[0012] Preferably, the inner diameter of the energized tube matches the outer diameter of the part to be tested.

[0013] Preferably, the positioning element is made of insulating material, and the energizing tube is made of rigid conductive material.

[0014] Preferably, the rigid conductive material is copper or aluminum.

[0015] Compared with existing technologies, the advantages of this invention are as follows: The arc burn prevention rapid detection fixture disclosed in this invention includes a positioning component and an energizing tube. The positioning component is detachably connected to both ends of the energizing tube. The positioning component has a keyway for mounting the positioning component onto the chuck of a magnetic particle inspection machine, allowing it to be directly fixed to the chuck during use. It is understood that the keyway and detachable connection ensure the rigidity of the overall fixture structure and the fit between the fixture, the chuck, and the part to be tested. This solves the problems of previous fixtures requiring manual alignment and multiple people working together, making operation simpler and clamping more efficient. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the blind hole part with a small outer diameter on a large gear disc to be inspected. Figure 2 This is a schematic diagram of the structure of the rapid detection fixture for arc burns of the present invention, wherein the arrow points to the current path when the large gear of the large gear disk with the small outer diameter blind hole of the part to be tested is magnetized.

[0017] Figure 3 This is a schematic diagram of the positioning component of the rapid detection fixture for arc burns of the present invention, wherein (a) is the front view of the positioning component and (b) is the side view of the positioning component.

[0018] Figure 4 This is a front view of the threaded sleeve of the arc burn prevention rapid detection fixture of the present invention.

[0019] Figure 5 This is a schematic diagram of the energized tube of the rapid arc burn detection fixture of the present invention, wherein (a) is the front view of the energized tube and (b) is the side view of the energized tube.

[0020] Explanation of reference numerals in the attached diagram: 1. Positioning component; 11. Clamping section; 12. Fixing section; 13. Transition section; 14. Keyway; 2. Screw sleeve; 3. Power supply pipe; 31. Mounting slot; 4. Part to be tested; 41. Large outer diameter; 42. Small outer diameter; 411. Large gear plate; 412. Blind hole; 5. Fastener; 6. Magnetic particle inspection machine chuck. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "horizontal", "inner", "outer", "top", "bottom", etc., which indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] Please see Figures 2 to 5 The arc burn prevention rapid detection fixture of this embodiment includes two positioning components 1 and two power supply pipes 3. The two ends of the power supply pipes 3 are detachably connected to the positioning components 1. The positioning components 1 are provided with keyways 14 for mounting the positioning components 1 on the magnetic particle flaw detector chuck.

[0024] It is understandable that by setting the keyway 14, the fixture can be directly embedded in the magnetic particle inspection machine chuck through the keyway 14 during use. The structure is simple and the design is reasonable. It also solves the problem that the fixture needs to be manually aligned and the clamping position needs to be coordinated by multiple people. The operation is simpler and the clamping is more efficient.

[0025] Specifically, the positioning element 1 includes a clamping section 11, a fixing section 12 and a transition section 13 connected in sequence. The clamping section 11 and the fixing section 12 are arranged opposite to each other on both sides of the transition section 13, and the space between the clamping section 11, the fixing section 12 and the transition section 13 is a keyway 14.

[0026] It is understandable that the shape of the keyway 14 corresponds to the chuck setting of the magnetic particle inspection machine. As long as the positioning part 1 can be installed on the chuck of the magnetic particle inspection machine through the keyway 14, it is acceptable.

[0027] The fixed section 12 is provided with fasteners 5, and the positioning part 1 is fixed to the magnetic particle inspection machine chuck by fasteners 5.

[0028] Specifically, the fastener 5 is a screw, bolt, or similar object, as long as it can fasten the positioning element 1.

[0029] It is understandable that the fixture can be fastened with fastener 5 during use, ensuring good contact between the fixture and the contact surface of the flaw detector chuck and the part to be tested. The structure is simple and the design is reasonable.

[0030] In this embodiment, the rapid detection fixture for arc burns also includes two rigid conductive threaded sleeves 2, with the two ends of the threaded sleeves 2 being threadedly connected to the power supply tube 3 and the positioning component 1, respectively.

[0031] Specifically, the screw sleeve 2 includes an external thread end and an internal thread end; the external thread end is connected to the positioning element 1, and the internal thread end is connected to the power supply pipe 3.

[0032] It is understandable that the two ends of the screw sleeve 2 are connected to the positioning parts 1 and the power supply pipe 3 at both ends by external threads and internal threads respectively, to ensure the rigidity of the overall structure and the positioning accuracy.

[0033] In this embodiment, the energizing tube 3 includes two symmetrically arranged hollow tubes capable of clamping the part to be tested 4. A mounting groove 31 is provided on the outer peripheral wall of the energizing tube 3 to facilitate the installation of the part to be tested 4. The large gear 411 of the part to be tested 4 is clamped between the two energizing tubes 3, and the small outer circle 42 of the part to be tested 4 is placed inside the energizing tube 3 without contacting it, remaining suspended. In other embodiments, the large gear 411 of the part to be tested 4 can be fixed to the energizing tube 3 using other fixing methods, with the small outer circle 42 not contacting the energizing tube 3, achieving the same or similar technical effect.

[0034] In this embodiment, the length of the energized tube 3 matches the length of the part to be tested 4 and is slightly longer than the part to be tested 4, so as to avoid the part to be tested 4 from contacting the magnetic particle flaw detector chuck; the outer diameter of both ends of the energized tube 3 (referring to the outer diameter of the side of the energized tube 3 that contacts the large gear disk 411, which is also the outer diameter of the side of the two hollow tubes that are close to each other) is smaller than the outer diameter of the large gear disk 411, and the inner diameter of both ends of the energized tube 3 (referring to the outer diameter of the side of the energized tube 3 that connects to the magnetic particle flaw detector chuck, which is also the outer diameter of the side of the two hollow tubes that are far away from each other) is larger than the outer diameter of the small outer circle 42, which is convenient for fixing the large gear disk 411 of the part to be tested 4 while avoiding contact with the small outer circle 42.

[0035] It is understandable that, because the small outer circle 42 of the part under test 4 is extremely small, it does not contact the energizer 3. In conventional methods, when magnetizing the large gear disk, a large current passes through the small outer circle 42. However, with the structure of the energizer 3 of this invention, the current does not need to pass through the small outer circle 42 (current path reference). Figure 2 (As shown by the arrow), this solves the risk of arc burns at the 42-point area of ​​the small outer circle, improving the reliability and efficiency of the detection.

[0036] It is understandable that the energizing tube 3 is designed based on the shaft length of the small outer diameter end. The size of the end that contacts the part to be tested can be customized according to the part. It is connected to the screw sleeve 2 by a thread, which is convenient for disassembly and replacement. That is, the energizing tube 3 is customizable and easy to replace. Different specifications of energizing tube 3 can be customized according to the outer diameter of the large gear plate 411 and the length of the small outer circle 42 for selection. The outer peripheral wall of the energizing tube 3 is provided with a mounting groove 31. The part to be tested 4 can be directly inserted into the mounting groove 31 and clamped. The clamping and unloading of the part can be realized by moving the energizing chuck of the flaw detector. The part to be tested 4 can be quickly installed and unloaded through this, which can greatly improve the clamping efficiency.

[0037] In this embodiment, the main body of the positioning component 1 is made of insulating material (such as PVC board), and the screw sleeve 2 and the power-conducting pipe 3 are made of rigid conductive material.

[0038] Specifically, the aforementioned rigid conductive material is copper or aluminum.

[0039] It's understandable that copper or aluminum have good electrical conductivity and are relatively soft, which can prevent problems such as arc burns and impact injuries.

[0040] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A rapid detection fixture for arc burns, characterized in that: It includes a positioning component (1) and an energizing tube (3). The two ends of the energizing tube (3) are detachably connected to the positioning component (1). The positioning component (1) is provided with a keyway (14) for mounting the positioning component (1) on the magnetic particle flaw detector chuck (6). The positioning member (1) includes a clamping section (11), a fixing section (12) and a transition section (13) connected in sequence. The clamping section (11) and the fixing section (12) are arranged opposite to each other on both sides of the transition section (13). The space between the clamping section (11), the fixing section (12) and the transition section (13) is the keyway (14). The energized tube (3) includes two symmetrically arranged hollow tubes that can clamp the part to be tested (4). An installation groove (31) is provided on the outer peripheral wall of the energized tube (3) to facilitate the installation of the part to be tested (4). The inner diameter of the energized tube (3) matches the outer diameter of the part to be tested (4). The part to be tested (4) is located inside the energized tube (3). The part to be tested (4) is a blind hole part with a large gear and a small outer circle, and the outer circumference is stepped.

2. The rapid arc burn detection fixture according to claim 1, characterized in that: The fixed section (12) is provided with fasteners (5), and the positioning component (1) is fixed on the magnetic particle inspection machine chuck (6) by the fasteners (5).

3. The rapid arc burn detection fixture according to claim 2, characterized in that: The fastener (5) is a screw or bolt.

4. The rapid arc burn detection fixture according to claim 1, characterized in that: The rapid detection fixture for arc burn protection also includes a rigid conductive threaded sleeve (2), the two ends of which are threadedly connected to the energized tube (3) and the positioning element (1), respectively.

5. The rapid arc burn detection fixture according to claim 4, characterized in that: The threaded sleeve (2) is a copper threaded sleeve or an aluminum threaded sleeve.

6. The rapid arc burn detection fixture according to any one of claims 1 to 5, characterized in that: The positioning element (1) is made of insulating material, and the energizing tube (3) is made of rigid conductive material.

7. The rapid arc burn detection fixture according to claim 6, characterized in that: The rigid conductive material is copper or aluminum.

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