Auxiliary electrode chuck for magnetic particle flaw detector

Abstract

The utility model discloses an auxiliary electrode chuck for a magnetic particle flaw detector, which comprises an auxiliary chuck, the auxiliary chuck comprises a head part and a tail rod, the head part is provided with a groove, the tail rod is a threaded rod, the head part clings to a part to be detected, and the tail rod passes through a through hole on an electrode of the magnetic particle flaw detector; the copper net is clamped and embedded in the groove, so that parts are prevented from being burnt; a nut matched with the tail rod is arranged at the front end of the handle, and after the tail rod penetrates through the through hole in the electrode, the nut is tightened, and the auxiliary chuck is fixed on the electrode of the magnetic particle flaw detector. The problems that when a magnetic particle flaw detector detects bolts and shaft pin parts with the length smaller than 100 mm, the space is narrow, local area defect judgment is difficult, and the product detection area is incomplete are solved, and the universal practicability is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of non-destructive testing, and in particular to an auxiliary electrode chuck for a magnetic particle flaw detector. Background Art

[0002] Magnetic particle flaw detector is a device for magnetic particle inspection of ferromagnetic parts. The device consists of a magnetizing power supply device, a part clamping device, an indication and control device, a magnetic suspension stirring device, a lighting device, etc. The part clamping device consists of a head electrode and a tail electrode. The head motor is fixed, and the tail electrode moves freely along the track. The function of the part clamping device is to fix the part stably and well between the two electrodes (head electrode and tail electrode), ensure that the part is well magnetized, and obtain a magnetic field strength that meets the requirements of magnetic particle inspection, thereby realizing the inspection of the part.

[0003] The size of the magnetic particle inspection objects ranges from large to small, including large, medium and small parts. Therefore, in order to meet the inspection of conventional parts, the current capacity of the commonly used magnetic particle flaw detectors is very large. They are designed to ensure the completion of magnetic particle inspection tasks for large, medium and small parts. Therefore, both the size and shape of the electrode chuck are designed to ensure the inspection of large, medium and small parts. The size of the head and tail electrode chucks of the magnetic particle flaw detector is generally 300mm×300mm, and the length of the parts that can be inspected ranges from 100mm to the inspection stroke (for example, 500mm, 2000mm, etc.), which can meet the inspection tasks of conventional large, medium and small parts.

[0004] However, the number of ultra-small ferromagnetic parts that need to be inspected by magnetic particle inspection is also increasing, especially the addition of bolts and axle pins with a length of less than 100 mm. When using conventional magnetic particle flaw detectors to barely inspect these bolts and axle pins with a length of less than 100 mm, there is a small space after the parts are clamped, and it is difficult to judge defects in local areas. There is a risk of incomplete product inspection areas, and magnetic particle inspection cannot be fully implemented. Summary of the invention

[0005] The present application provides an auxiliary electrode chuck for a magnetic particle flaw detector, which can solve the problems of narrow space, difficulty in judging defects in local areas, incomplete product inspection area, etc. when the magnetic particle flaw detector detects bolts and axle pins with a length less than 100 mm.

[0006] To achieve the above purpose, the present application provides the following solutions:

[0007] An auxiliary electrode chuck for a magnetic particle flaw detector, comprising:

[0008] An auxiliary chuck, the auxiliary chuck includes a head and a tail rod, the head is provided with a groove, the tail rod is a threaded rod, the head is close to the part to be detected, and the tail rod passes through the through hole on the electrode of the magnetic particle flaw detector; a copper mesh, the copper mesh is embedded in the groove to prevent burning parts; a handle, the front end of the handle is a nut matched with the tail rod, after the tail rod passes through the through hole on the electrode, the nut is tightened to fix the auxiliary chuck on the electrode of the magnetic particle flaw detector.

[0009] Preferably, the auxiliary chuck is made of brass.

[0010] The auxiliary electrode chucks are used in pairs, the tail rods pass through the holes on the head and tail electrodes of the magnetic particle detector respectively, and are fixed on the head and tail electrodes. A pair of the auxiliary chucks clamp the part to be inspected after being close to each other.

[0011] Compared with the prior art, this application has achieved the following technical effects:

[0012] The present application provides an auxiliary electrode chuck for a magnetic particle flaw detector, comprising an auxiliary chuck, a copper mesh, and a handle. The use of the auxiliary chuck solves the problems of the magnetic particle flaw detector when detecting bolts and axle pins with a length less than 100 mm, such as narrow space, difficulty in judging defects in local areas, and incomplete product detection areas. The process holes on the head and tail electrodes are designed in conjunction with the tail rod and the handle to solve the problem of the auxiliary device falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of the auxiliary electrode chuck provided in this application;

[0014] Figure 2 It is a schematic diagram of the structure of the auxiliary chuck in this application;

[0015] Figure 3 It is a schematic diagram of the structure of the handle in this application;

[0016] Explanation of numbers in the figure: 1. Auxiliary chuck; 2. Handle; 3. Through hole; 4. Electrode; 11. Head; 12. Groove; 13. Tail rod; 21. Nut. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] The purpose of the present invention is to provide an auxiliary electrode chuck for a magnetic particle flaw detector, which can solve the problems of narrow space, difficulty in judging defects in local areas, incomplete product detection area, etc. when the magnetic particle flaw detector detects bolts and axle pins with a length less than 100 mm.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-3 As shown, this embodiment provides an auxiliary electrode chuck for a magnetic particle flaw detector, comprising: an auxiliary chuck 1, the auxiliary chuck 1 comprising a head 11 and a tail rod 13, the head 11 being provided with a groove 12, the tail rod 12 being a threaded rod, the head 11 being close to the part to be detected, the tail rod 13 passing through a through hole 3 on the electrode 4 of the magnetic particle flaw detector; a copper mesh, the copper mesh being embedded in the groove 12 to prevent burning of the parts; a handle 2, the front end of the handle 2 being a nut 21 cooperating with the tail rod, after the tail rod 12 passes through the through hole 3 on the electrode 4, the nut 21 is tightened to fix the auxiliary chuck 1 on the electrode 4 of the magnetic particle flaw detector.

[0021] Specifically, considering the good electrical conductivity of copper, this embodiment uses a brass rod with a diameter of Φ80mm as the material for making the auxiliary electrode chuck. Considering the maximum contact surface of the parts during clamping and the feasibility during installation, in this embodiment, the Φ80mm brass rod is processed into towers with diameters of Φ80mm, Φ60mm, and Φ8mm, respectively, and the lengths are 35mm, 40mm, and 60mm, respectively; in addition, considering the measures to prevent sparks during clamping magnetization, a groove with a width of 5mm and a depth of 5mm is reserved in the middle of the Φ80mm step to install and fix the copper mesh to prevent the parts from being burned. An auxiliary electrode chuck mounting hole with an inner diameter of Φ8mm is processed at the edge of the head and tail electrodes of the magnetic particle flaw detector close to the inspector. The nut 21 on the handle 2 is used to fix the auxiliary electrode chuck, and in order to facilitate the installation and disassembly of the auxiliary electrode chuck, a handle with a diameter of Φ6mm and a length of 30mm is welded at one end of the tail of the nut 21 for easy operation.

[0022] The auxiliary electrode chucks are used in pairs, and the tail rod 13 passes through the holes on the head and tail electrodes of the magnetic particle detector, and is fixed on the head and tail electrodes. When the magnetic particle detects small parts with a length less than 100 mm, the parts can be directly clamped between the auxiliary electrode chucks, which increases the detection space, facilitates operation, and realizes complete magnetization and detection of small parts.

[0023] The present specification uses specific examples to illustrate the principles and implementation methods of the present application. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An auxiliary electrode chuck for a magnetic particle flaw detector, characterized in that include: An auxiliary chuck, the auxiliary chuck comprises a head and a tail rod, the head is provided with a groove, the tail rod is a threaded rod, the head is closely attached to the part to be inspected, and the tail rod passes through a through hole on the electrode of the magnetic particle flaw detector; A copper mesh, the copper mesh is embedded in the groove to prevent parts from being burned; and A handle, the front end of which is a nut matched with the tail rod. After the tail rod passes through the through hole on the electrode, the nut is tightened to fix the auxiliary chuck on the electrode of the magnetic particle flaw detector.

2. The auxiliary electrode chuck for a magnetic particle flaw detector according to claim 1, characterized in that The auxiliary chuck is made of brass.

3. The auxiliary electrode chuck for a magnetic particle flaw detector according to claim 1, characterized in that The auxiliary electrode chucks are used in pairs, the tail rods pass through the holes on the head and tail electrodes of the magnetic particle detector respectively, and are fixed on the head and tail electrodes. A pair of the auxiliary chucks clamp the part to be inspected after being close to each other.

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