Batch magnetizing supporting plate for screws

Abstract

The utility model provides a screw batch magnetization supporting plate, which is characterized in that a plurality of screw rod grooves for accommodating screw rod parts of screws and a plurality of screw head grooves which coaxially extend with the screw rod grooves and are used for accommodating head parts of the screws are arranged on one side of the supporting plate, which is used for carrying out longitudinal defect inspection on the screws, in parallel; the screw head grooves are arranged in a row on each of both sides of the screw groove so that the screw portions of adjacent screws can be in contact with each other. A plurality of V-shaped grooves which are perpendicular to the screw rod groove and the screw head groove and used for containing the screws are formed in the side, used for conducting circumferential defect inspection on the screws, of the supporting plate in parallel, and oil leakage holes formed in the screw head groove lead to the V-shaped grooves. When the supporting plate is used for carrying out magnetic powder detection on the screws, electrification method magnetization is not needed, burning of parts can be avoided, product quality is guaranteed, magnetization of batch screws can be completed only through the supporting plate, then detection of longitudinal defects and circumferential defects of the screws is completed, time and labor are saved, and production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic particle testing, and particularly relates to a batch magnetization support plate for screws. Background Art

[0002] When performing magnetic particle testing on screws, circumferential magnetization and longitudinal magnetization are required to check the longitudinal defects and circumferential defects of the screws respectively. Currently, for circumferential magnetization, the method is to directly clamp the two axial ends of the screw between two electrodes for energized circumferential magnetization. Since the screws are usually small in size, this method is difficult to operate electrically. On the one hand, it is because the screws are not easy to clamp and can only be clamped and magnetized one by one. On the other hand, due to the small contact area between the two ends of the screw and the electrodes, it is easy to cause part burns. For longitudinal magnetization, the method is to place the parts end to end in a circular coil for magnetization. The number of screws placed at one time is small, but the number of screws in a batch during manufacturing is often hundreds or thousands, which cannot meet the high-efficiency magnetization requirement. Therefore, the current screw magnetization method is difficult to operate electrically, has low magnetization efficiency, and is easy to cause part burns, affecting product quality. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problems of difficult electrical operation, low efficiency, and easy part burns in the existing screw magnetization method, and provides a batch magnetization support plate for screws. By using this support plate, electromagnetic magnetization is not required, avoiding part burns, and a single support plate can complete the inspection of longitudinal defects and circumferential defects of a batch of screws, saving time and effort.

[0004] To achieve the above purpose, the technical solution provided by the utility model is:

[0005] A batch magnetization support plate for screws, characterized in that: one side of the support plate is used for checking the longitudinal defects of the screws, and the other side is used for checking the circumferential defects of the screws;

[0006] On the said one side of the support plate, a plurality of screw grooves for receiving the screw shafts of the screws are arranged in parallel, and a plurality of screw head grooves for receiving the heads of the screws and extending coaxially with the screw grooves are arranged. The screw head grooves are arranged in two rows on both sides of the screw grooves, so that the screw shafts of adjacent screws can contact each other;

[0007] Oil leakage holes for discharging magnetic suspension liquid are opened in the screw head grooves;

[0008] On the said other side of the support plate, a plurality of V-shaped grooves for receiving the screws and perpendicular to the screw grooves and the screw head grooves are arranged in parallel, and the oil leakage holes lead to each V-shaped groove.

[0009] Further, there is one row of screw grooves and two rows of screw head grooves.

[0010] Further, the center distance between two adjacent screw grooves in each row is equal to the diameter of the screw part.

[0011] Further, two oil leakage holes are provided in each screw groove.

[0012] Further, the number of V-shaped grooves is four.

[0013] Further, the pallet includes handle grooves at both ends respectively for taking the pallet.

[0014] The advantages of the present utility model are as follows:

[0015] 1. For the screw batch magnetization pallet of the present utility model, on one side of the pallet, multiple screws are horizontally laid flat and the screw parts are in contact with each other, which increases the overall aspect ratio of the length to diameter (width) of the screws in the horizontal direction. When the screws are magnetized in the magnetization coil, a relatively high magnetic induction intensity can be generated in the horizontal direction, and the inspection of longitudinal defects of multiple screws can be completed at one time, avoiding the single-screw clamping and energized circumferential magnetization for inspecting longitudinal defects in the prior art; on the other side of the pallet, multiple screws are arranged end to end in multiple rows and magnetized in the magnetization coil, and the inspection of circumferential defects of multiple screws can be completed at one time. Therefore, when using the pallet of the present utility model to perform magnetic particle inspection on screws, it is not necessary to magnetize by the energizing method, which can avoid part burning, ensure product quality, and only use this pallet as a single tool to complete the magnetization of batch screws and then complete the inspection of their longitudinal and circumferential defects, saving time and effort and greatly improving production efficiency.

[0016] 2. The pallet of the present utility model is also applicable to the batch magnetization and longitudinal and circumferential defect inspection of various parts such as rivets and pins, with strong applicability. Description of the Drawings

[0017] Through the following description with reference to the drawings, the features and advantages of the present utility model will become more easily understood. The drawings are not drawn to scale, and some features are enlarged or reduced to show the details of specific components. In the

[0018] In the drawings:

[0019] Figure 1 is the top perspective view of the screw batch magnetization pallet of the present utility model;

[0020] Figure 2 is the bottom perspective view of the screw batch magnetization pallet of the present utility model;

[0021] Figure 3 is the perspective view of the present utility model when performing screw longitudinal defect inspection;

[0022] Figure 4 is the perspective view of the present utility model when performing screw circumferential defect inspection.

[0023] In the figure: 1 - screw groove; 2 - screw head groove; 3 - oil leakage hole; 4 - V-shaped groove; 5 - handle groove; 100 - screw to be inspected. Detailed implementation manner

[0024] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is for illustrative purposes only and does not limit the present invention.

[0025] The present invention provides a batch magnetization pallet for screws, and both side surfaces thereof can magnetize screws in batches during screw magnetic particle inspection to respectively check the longitudinal defects and circumferential defects of the screws.

[0026] Refer to Figure 1 and Figure 3 As an exemplary embodiment of the present invention, the batch magnetization pallet for screws can be generally in a cuboid structure. On one side of the pallet, a plurality of screw grooves 1 for receiving the screw parts of the screws 100 to be inspected are arranged in parallel, and a plurality of screw head grooves 2 for receiving the heads of the screws 100 to be inspected and extending coaxially with the screw grooves 1 are arranged. The screw head grooves 2 are arranged in two rows on both sides of the screw grooves 1. Thus, the screws can be placed crosswise in the screw grooves 1, so that the screw parts of adjacent screws can contact each other, while the heads face away from each other, so that all the screws 100 to be inspected form a whole. The pallet is preferably flat to have a compact structure. The screw grooves 1 and the screw head grooves 2 are arranged in one-to-one correspondence to jointly accommodate the screws 100 to be inspected, so that a plurality of screws can be laid horizontally, that is, the axes of the screws are coplanar and the screws are arranged in a direction perpendicular to the axes of the screws.

[0027] With the above structure, when magnetizing with a coil, the long diameter (width) of all parts as a whole along the magnetic field direction shown by the arrow H in Figure 3 is relatively large, especially greater than or equal to 2. In this way, sufficient magnetic induction intensity can be obtained when the parts are magnetized. The long diameter (width) of a single screw in the transverse direction is relatively small, and the magnetic induction intensity during magnetization is extremely weak, and longitudinal defects cannot be detected. Using this magnetization pallet to lay a plurality of screws flat greatly increases the long diameter (width) ratio of the screws in the transverse direction and enhances the magnetic induction intensity during magnetization. In order to maintain a strong magnetic induction intensity of the screws, the screws cannot be taken out during inspection, and continuous method inspection must be carried out.

[0028] For the convenience of operating the pallet, preferably, one row of screw grooves 1 can be provided, and two rows of screw head grooves 2 can be provided, one row on each side of the screw grooves 1, as shown. However, it should be noted that the number of the screw grooves 1 and the screw head grooves 2 is not limited to this. For example, two rows of screw grooves 1 and four rows of screw head grooves 2 can be respectively provided. The center distance between two adjacent screw grooves 1 in each row can be designed to be equal to the diameter of the screw part to facilitate the close contact of the screw parts.

[0029] An oil leakage hole 3 for discharging the magnetic suspension liquid is provided in the screw head groove 2 to prevent the magnetic suspension liquid from accumulating. The number of the oil leakage holes 3 is not particularly limited. In particular, two oil leakage holes 3 are provided in each screw groove 1.

[0030] As Figure 3 shown, when longitudinally inspecting the screws using this side of the pallet, the screws are laid flat in sequence, the screw shafts are placed in the screw grooves 1, the screw heads are placed in the screw head grooves 2, and all the screw shafts are aligned and placed longitudinally into the magnetizing coil (the magnetic field direction is as shown by the arrow H) for magnetization and pouring of the magnetic suspension liquid, and continuous method inspection is carried out. When pouring the magnetic suspension liquid, the magnetic suspension liquid is drained along the oil leakage holes 3. Then the screws are rotated about 120° along the axis in sequence, and the above operations are repeated 2 times until the entire circumference of the screws is inspected.

[0031] Now refer to Figure 2 and Figure 4 , on the other side of the pallet, a plurality of V-shaped grooves 4 perpendicular to the screw grooves 1 and the screw head grooves 2 are arranged in parallel for receiving the screws 100 to be inspected. A plurality of screws can be placed end to end in each V-shaped groove. The oil leakage holes 3 lead to each V-shaped groove 4. The number of the V-shaped grooves 4 is not particularly limited, but exemplarily it is four. In this case, two oil leakage holes 3 can be provided in each screw groove 1 to ensure that there is an oil leakage hole in each V-shaped groove and prevent the magnetic suspension liquid from accumulating.

[0032] As Figure 4 shown, when circumferentially inspecting the screws using this side of the pallet, a plurality of screws are placed end to end in the V-shaped grooves 4 and placed longitudinally into the magnetizing coil (the magnetic field direction is as shown by the arrow H) for magnetization and pouring of the magnetic suspension liquid, and continuous method inspection or residual magnetism method inspection is carried out.

[0033] Those skilled in the art will understand that the pallet of the present utility model can magnetize screws with the same diameter but different lengths. Specifically, Figure 1 when magnetizing the side surface, the lengths of the screws in one magnetizing batch must be the same, Figure 2 when magnetizing the side surface, the lengths of the screws in one magnetizing batch can be different. In addition, this pallet is also applicable to batch magnetization and longitudinal and circumferential defect inspection of various parts such as rivets and pin shafts, and has strong applicability.

[0034] Now continue to refer to Figures 1 to 4 , the pallet may respectively include handle grooves 5 at both ends, especially at both ends in the length direction, so as to facilitate the taking of the pallet. The two sides of the exemplary handle grooves 5 can be recesses, but it can have an opening for the hand to reach in. The present utility model does not limit this.

[0035] As described above, for the screw batch magnetization pallet of the present utility model, on one side of the pallet, multiple screws are laid horizontally and their screw rod parts are in contact with each other, which can complete the inspection of longitudinal defects of multiple screws at one time, avoiding the single screw clamping and energized circumferential magnetization for inspecting longitudinal defects in the prior art; on the other side of the pallet, multiple screws are arranged end to end in multiple rows and magnetized in the magnetization coil, which can complete the inspection of circumferential defects of multiple screws at one time. Therefore, when using the pallet of the present utility model to conduct magnetic particle testing on screws, it is not necessary to magnetize by the energizing method, which can avoid part burning, ensure product quality, and only use this pallet as a single tool to complete the magnetization of batch screws and then complete the inspection of their longitudinal and circumferential defects, saving time and effort and greatly improving production efficiency.

[0036] Finally, it should be noted that the features mentioned and / or shown in the above description of the exemplary embodiments of the present utility model can be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments or replace the corresponding features in other embodiments. The technical solutions obtained through such combination or replacement should also be regarded as being included within the protection scope of the present utility model.

Claims

1. A batch magnetization pallet for screws, characterized in that: One side of the pallet is used for longitudinal defect inspection of the screw, and the other side is used for circumferential defect inspection of the screw; On the said one side of the pallet, a plurality of screw rod grooves for receiving the screw rod part of the screw are arranged in parallel, and a plurality of screw head grooves for receiving the head of the screw and extending coaxially with the screw rod grooves are arranged. One row of screw head grooves is arranged on each side of the screw rod groove so that the screw rod parts of adjacent screws can contact each other; An oil leakage hole for discharging the magnetic suspension liquid is provided in the screw head groove; On the said other side of the pallet, a plurality of V-shaped grooves for receiving the screw and perpendicular to the screw rod groove and the screw head groove are arranged in parallel, and the oil leakage holes lead to each V-shaped groove.

2. The screw batch magnetization pallet according to claim 1, wherein: There is one row of screw rod grooves and two rows of screw head grooves.

3. The screw batch magnetization pallet according to claim 1 or 2, characterized in that: The center distance between two adjacent screw rod grooves in each row is equal to the diameter of the screw rod part.

4. The screw batch magnetization pallet according to claim 1 or 2, characterized in that: Two oil leakage holes are provided in each screw rod groove.

5. The screw batch magnetization pallet according to claim 4, wherein: The number of the V-shaped grooves is four.

6. The screw batch magnetization pallet according to claim 1 or 2, characterized in that: The pallet respectively includes handle grooves at both ends for taking the pallet.

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