CN219349109U

CN219349109U - Multi-range test tool for magnetic material orientation test

Info

Publication number: CN219349109U
Application number: CN202320307087.1U
Authority: CN
Inventors: 许峰; 桂伟平
Original assignee: Ningbo Canmang Technology Co ltd
Current assignee: Ningbo Canmang Technology Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-14
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a multi-range test fixture for magnetic material orientation test, which comprises a frame body (1), wherein a through detection channel (2) is arranged on the frame body (1), and a plurality of groups of detection coils (3) distributed along the circumferential direction of the detection channel (2) are arranged in the frame body (1); when the magnetic material is subjected to orientation test, only one group of detection coils (3) is electrified, induction data measured at two ends of the electrified detection coils (3) are taken as detection data when the magnetic material passes through the detection channel (2), and a plurality of groups of detection coils (3) respectively correspond to a plurality of detection data measuring ranges. The utility model has simple structure, and can switch a plurality of coils with different measuring ranges to adapt to the orientation test of magnetic materials with different specifications.

Description

Multi-range test tool for magnetic material orientation test

Technical Field

The utility model relates to the technical field of magnetic materials, in particular to a multi-range test tool for magnetic material orientation test.

Background

The magnetic material is firstly nonmagnetic after manufacture, and is only magnetized according to the requirements of customers in the shipment stage, so that the anisotropic magnetic material needs to be magnetized in the correct magnetic field orientation direction (namely the magnetization direction during magnetization) before magnetization, and then qualified products can be obtained. In general, the ideal magnetization direction of a magnetic material is set before manufacturing, which depends on the shape and size of the product, but in the mass production process of the magnetic material, the actual magnetization direction of some products deviates from the ideal magnetization direction, so it is very important for anisotropic magnetic materials to detect the orientation before leaving the factory.

There are various devices for testing the orientation of a magnetic material at present, reference may be made to patent application publication No. CN 114636954A, which discloses a method for testing the orientation direction of a magnetic material, based on the principle that when a magnetic material passes through an energized coil, the energized coil generates transient induction data, the orientation direction of the magnetic material is judged by the induction data value, the test method uses a pair of energized coils as a core structure, and as can be seen from the drawing of the specification of the patent application, the energized coils are fixed in a coil frame and are inconvenient to replace, then one coil corresponds to only one fixed detection range (i.e. single range), the detection range of the coil can be understood to be composed of a lower limit value and an upper limit value, the lower limit value determines the sensitivity of the coil, that is, the minimum induction data that the coil can detect, the upper limit value determines the maximum induction data that the coil can detect, the lower limit value and the upper limit value of a single coil are interrelated, the upper limit value and lower limit value of the coil are determined by parameters such as the material, the wire diameter, the number of turns, the circumference and the like of the coil with good sensitivity, and the upper limit value is poor. If the product exceeds the detection range of the coil, the coil needs to be replaced, and the coil replacement workload is large, the time is long, and the production process is inconvenient. Therefore, there is a need to develop a multi-range test tool for magnetic material orientation test to solve the problems existing in the current magnetic material orientation test.

Disclosure of Invention

The utility model aims to provide a multi-range test tool for magnetic material orientation test. The utility model has simple structure, and can switch a plurality of coils with different measuring ranges to adapt to the orientation test of magnetic materials with different specifications.

The technical scheme of the utility model is as follows: a multi-range test fixture for magnetic material orientation test comprises a frame body, wherein a through detection channel is arranged on the frame body, and a plurality of groups of detection coils distributed along the circumferential direction of the detection channel are arranged in the frame body; when the magnetic material is subjected to orientation test, only one group of detection coils are electrified, induction data measured at two ends of the electrified detection coils are taken as detection data when the magnetic material passes through the detection channel, and a plurality of groups of detection coils correspond to a plurality of detection data measuring ranges respectively.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, a plurality of groups of detection coils are arranged in a single frame along the detection channel, the whole structure is simple, each detection coil corresponds to a different measuring range respectively and has a plurality of measuring ranges, and when the magnetic material is subjected to orientation detection, the detection coils with the corresponding measuring ranges can be selected according to the product specification of the magnetic material to be electrified, so that the product passes through the detection channel to finish the orientation test, the whole frame where the coils are positioned is not required to be replaced, the orientation detection of the magnetic material with various specifications can be adapted, the application range is wide, and the detection is more convenient and efficient.

In the multi-range test fixture for the magnetic material orientation test, the frame body is provided with the annular grooves, and a plurality of groups of the detection coils are all positioned in the annular grooves.

In the multi-range test fixture for magnetic material orientation test, a plurality of groups of the detection coils respectively correspond to a plurality of perimeter values, and the plurality of groups of the detection coils are coaxially distributed in the annular groove from small to large according to the perimeter values.

In the multi-range test tool for testing the orientation of the magnetic material, a plurality of convex edges are arranged in the annular groove, and adjacent detection coils are separated by the convex edges.

In the multi-range test tool for the magnetic material orientation test, a frame cover is connected to the outer side of the annular groove, and a hollow corresponding to the detection channel of the frame body is arranged on the frame cover.

In the multi-range test tool for the magnetic material orientation test, a plurality of groups of detection coils have the same wire diameters.

In the multi-range test fixture for the magnetic material orientation test, a plurality of groups of the detection coil turns are different from each other.

In the multi-range test tool for testing the orientation of the magnetic material, the cross section of the detection channel is rectangular.

In the multi-range test fixture for magnetic material orientation test, the frame body is provided with a main joint and a plurality of sub-joints, one ends of the plurality of groups of detection coils are connected to the main joint, and the other ends of the plurality of groups of detection coils are connected to the sub-joints respectively.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

fig. 3 is a schematic structural view of the frame.

Reference numerals: 1-frame body, 2-detection channel, 3-detection coil, 4-annular groove, 5-bead, 6-frame cover, 7-total joint and 8-sub joint.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Examples: the multi-range test tool for the magnetic material orientation test is structurally shown in fig. 1 to 3, and comprises a frame body 1, wherein a through detection channel 2 is arranged on the frame body 1, and two groups of detection coils 3 distributed along the circumferential direction of the detection channel 2 are arranged inside the frame body 1; when the magnetic material is subjected to orientation test, only one group of detection coils 3 is electrified, induction data measured at two ends of the electrified detection coils 3 are taken as detection data when the magnetic material passes through the detection channel 2, and the two groups of detection coils 3 respectively correspond to two detection data measuring ranges.

Preferably, the frame 1 is provided with an annular groove 4, the two groups of detection coils 3 are all located in the annular groove 4, the detection coils 3 are mutually isolated in an insulating manner, and the detection coils are placed in a nonmetallic magnetic conductive material and can be fixed by nonmetallic materials, such as glue, so that the detection coils 3 are firmly and stably located in the annular groove 4.

Preferably, the materials and the wire diameters of the two groups of detection coils 3 are the same, the two groups of detection coils 3 respectively correspond to two different perimeter values, the two groups of detection coils 3 are nested in the annular groove 4 from inside to outside according to the size of the perimeter values, the perimeter of one group of detection coils 3 with small perimeter is 180mm, and the number of turns of the coils is 100; the circumference of the group of detection coils 3 is 300mm, and the number of turns of the coils is 60.

The detection coil 3 with large circumference has large volume of the detectable magnetic material, but low sensitivity, namely, the lower limit value and the upper limit value are larger; the detection coil 3 with small perimeter has small volume of the detectable magnetic material, but high sensitivity, namely, the lower limit value and the upper limit value are smaller; the detection coil 3 with small circumference is provided with [ A, B ] and the detection coil 3 with large circumference is provided with [ C, D ], so that A < C < B < D is required to be ensured, namely, the measurement ranges of the two detection coils 3 have a section of overlapped area, so that the detection range of the utility model is not missed.

Preferably, the cross-section of the detection channel 2 is rectangular, and reference is made to patent application publication No. CN 114636954a, the detection channel 2 with rectangular cross-section facilitates the matching installation of the utility model with a slide, and the utility model needs to be matched with an inclined slide when detecting the orientation of the magnetic material.

Preferably, the annular groove 4 is internally provided with the convex rib 5, and the adjacent detection coils 3 are separated by the convex rib 5, and because the cross section of the detection channel 2 is rectangular, the detection coils 3 are also designed to be rectangular and distributed along the circumferential direction of the detection channel 2, the single detection coil 3 is divided into a long side and a short side, the convex rib 5 is arranged between the adjacent long sides of the two detection coils 3, firstly, insulation and isolation are carried out, and secondly, the installation of the two detection coils 3 can be limited and fixed.

Preferably, the outer side of the annular groove 4 is connected with a frame cover 6, the frame cover 6 is connected with the frame body 1 through bolts, the detection coil 3 inside the frame body 1 is isolated from the outside through the arrangement of the frame cover 6, the frame cover 6 is provided with a hollow corresponding to the detection channel 2 of the frame body 1, and the hollow arrangement enables the whole structure formed by the frame body 1 and the frame cover 6 to be provided with a through detection channel 2.

Preferably, a main joint 7 and two sub-joints 8 are arranged on the frame body 1, one ends of the two groups of detection coils 3 are connected to the main joint 7, and the other ends of the two groups of detection coils are respectively connected to the sub-joints 8, wherein automatic change-over switches are arranged at the positions of the main joint 7 and the two sub-joints 8, so that the automatic matching of the measuring range of the product detection process can be realized, and the automation and the intellectualization of the production process are realized.

The working principle of the utility model is as follows: according to the size of the magnetic material, the corresponding detection coil 3 is selected, the large-size magnetic material is selected as the detection coil 3 with a large measuring range (large perimeter value), the small-size magnetic material is selected as the detection coil 3 with a small measuring range (small perimeter value), and the total connector 7 and one of the sub-connectors 8 are connected into a circuit through the control of the automatic change-over switch, so that the corresponding detection coil 3 is electrified to detect the magnetic material, and the detection coil 3 which is not connected into the circuit does not form a closed loop and is not electrified, so that the detection is not interfered.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A multiscale test fixture for magnetic material orientation test, its characterized in that: the detecting device comprises a frame body (1), wherein a through detecting channel (2) is arranged on the frame body (1), and a plurality of groups of detecting coils (3) distributed along the circumferential direction of the detecting channel (2) are arranged inside the frame body (1); when the magnetic material is subjected to orientation test, only one group of detection coils (3) is electrified, induction data measured at two ends of the electrified detection coils (3) are taken as detection data when the magnetic material passes through the detection channel (2), and a plurality of groups of detection coils (3) respectively correspond to a plurality of detection data measuring ranges.

2. The multi-range test fixture for magnetic material orientation testing of claim 1, wherein: the frame body (1) is provided with an annular groove (4), and a plurality of groups of detection coils (3) are all positioned in the annular groove (4).

3. The multi-range test fixture for magnetic material orientation testing according to claim 2, wherein: the plurality of groups of detection coils (3) respectively correspond to a plurality of perimeter values, and the plurality of groups of detection coils (3) are coaxially distributed in the annular groove (4) from small to large according to the perimeter values.

4. A multi-scale test fixture for magnetic material orientation testing according to claim 3, wherein: a plurality of ribs (5) are arranged in the annular groove (4), and adjacent detection coils (3) are separated by the ribs (5).

5. The multi-range test fixture for magnetic material orientation testing according to claim 2, wherein: the outside of annular groove (4) is connected with frame lid (6), be equipped with on frame lid (6) with the fretwork that the detection passageway (2) of framework (1) corresponds.

6. The multi-range test fixture for magnetic material orientation testing according to claim 2, wherein: and a plurality of groups of detection coils (3) have the same wire diameter.

7. The multi-range test fixture for magnetic material orientation testing of claim 1, wherein: the cross section of the detection channel (2) is rectangular.

8. The multi-range test fixture for magnetic material orientation testing of claim 1, wherein: the frame body (1) is provided with a main joint (7) and a plurality of sub-joints (8), one ends of the plurality of groups of detection coils (3) are connected to the main joint (7), and the other ends are respectively connected to the sub-joints (8).