Clamp, magnetic steel detector and detection method

Abstract

The invention discloses a clamp, a magnetic steel detector and a detection method, and belongs to the technical field of magnetic steel performance detection.The clamp comprises a supporting body, an adjusting knob and three clamping rods, the supporting body is provided with guide grooves, the number of the guide grooves corresponds to the number of the clamping rods, and an included angle is formed between the moving direction of the clamping rods and the axis of the supporting body; the two guide grooves are symmetrically arranged relative to the axis of the supporting main body; the clamping rod is at least partially arranged in the guide groove and is in sliding fit with the inner wall of the supporting body in the guide groove. The supporting body is sleeved with the adjusting knob, the clamping rods are located between the adjusting knob and the supporting body, the adjusting knob is in threaded fit with the first ends of the three clamping rods, and a clamping position is formed among the second ends of the three clamping rods. By rotating the adjusting knob, the adjusting knob is in threaded fit with the three clamping rods, the three clamping rods are driven to move at the same time, the size of the clamping position is adjusted, and the requirement that the clamp clamps magnetic steel of different sizes is met.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic steel performance detection, and particularly to a fixture, a magnetic steel detector, and a detection method. Background Art

[0002] The most original definition of magnetic steel is an aluminum-nickel-cobalt alloy. Magnetic steel is synthesized from several hard and strong metals, such as iron combined with aluminum, nickel, cobalt, etc., and sometimes copper, niobium, tantalum are synthesized to make super-hard permanent magnet alloys. Different compositions of its metal components result in different magnetic properties and thus different uses. It is mainly used in various fields such as sensors, instruments, electronics, electromechanics, medical treatment, teaching, automobiles, aviation, and military technology.

[0003] Before use, magnetic steel generally needs to be detected for its performance using detection equipment. Magnetic steel has different sizes. When magnetic steel cooperates with an inductor, the inductor senses the magnetic flux of the magnetic steel. A fixture is required for fixing the magnetic steel. However, the existing fixtures cannot clamp magnetic steel of different sizes, and the clamping positions all have magnetism, which affects the detected data. Summary of the Invention

[0004] The purpose of the present invention is to improve the problem that the existing fixtures cannot meet the requirement of clamping magnetic steel of different sizes, and to provide a fixture, a magnetic steel detector, and a detection method.

[0005] The technical solutions to achieve the above purpose include the following:

[0006] A fixture, comprising: a support main body, an adjustment knob, and a clamping rod assembly. The clamping rod assembly includes at least two clamping rods. The support main body has a guide groove, and the number of the guide grooves corresponds to the number of the clamping rods. At least a part of the clamping rod is arranged in the guide groove and is slidably matched with the inner wall of the support main body in the guide groove;

[0007] An included angle is formed between the moving direction of any one of the clamping rods and the axis line of the support main body, and the moving directions of the two clamping rods intersect; the adjustment knob is sleeved outside the support main body, the adjustment knob is in threaded cooperation with the first ends of the two clamping rods, and a clamping position is formed between the second ends of the two clamping rods;

[0008] The adjustment knob is used to adjust the position of the clamping rod assembly so that the clamping rod assembly has a first moving position and a second moving position. In the first moving position, the clamping position becomes smaller; in the second moving position, the clamping position becomes larger.

[0009] In one embodiment, the support main body includes a support base, a sealing end cover, and a guide member. The sealing end cover and the guide member are respectively arranged at the front and rear ends of the support base. The guide member has a first guide hole, and the outer wall of the support base is recessed to form the guide groove, and the guide groove is communicated with the first guide hole;

[0010] The first guiding hole is used for the first end of the clamping rod to pass through, so that at least part of the clamping rod enters the guiding groove.

[0011] In one embodiment, the support base further has a second guiding hole, an activity cavity is formed between the support base and the sealing end cover, and the guiding groove communicates with the activity cavity through the second guiding hole;

[0012] When the two clamping rods are in the first moving position, the two clamping rods are outside the activity cavity; when the two clamping rods are in the second moving position, at least part of the two clamping rods are in the activity cavity.

[0013] In one embodiment, the support base includes a support block and a first support plate. Both the support block and the first support plate are circular structures. The outer diameter of the support block is smaller than that of the first support plate, and the support block is fixedly connected to the first support plate coaxially.

[0014] The guiding groove is formed on the outer wall of the support block, and the second guiding hole is formed on the first support plate.

[0015] In one embodiment, the sealing cover plate includes a second support plate, a support ring and a connecting block. The first end of the connecting block is fixed to the support base, the second end of the connecting block is installed at the inner end of the second support plate, the first end of the support ring is installed at the outer end of the second support plate, the second end of the support ring sleeved on at least part of the support base, and the activity cavity is formed between the inner wall of the support ring and the second support plate.

[0016] In one embodiment, the support main body is in a conical shape, and the clamping position is arranged at the smallest end of the support main body;

[0017] The guiding groove extends along the inclined wall of the support main body.

[0018] In one embodiment, the clamping rod assembly includes three clamping rods, and the three clamping rods are distributed in the circumferential direction of the support main body;

[0019] The inner wall of one end of the clamping rod close to the clamping position has an arc surface, and the arc surface is used for fitting with the outer wall of the magnet.

[0020] One end of the clamping rod far from the clamping position has a rack, the adjusting thread has an internal thread, and the internal thread meshes with the rack.

[0021] The present invention also provides a magnet detector, which includes a detection table, a moving clamping assembly, a sensor, a display assembly, and a fixture as described above. The fixture is installed on the moving clamping assembly. The moving clamping assembly is movably arranged at the first end of the detection table. The sensor is installed at the second end of the detection table. The sensor is electrically connected to the display assembly;

[0022] The clamping position of the fixture is used to clamp the magnet. The magnet is used to cooperate with the sensor inductively. The display assembly is used to display the magnetic flux of the magnet.

[0023] In one embodiment, the detection table is provided with a guide block. The moving clamping assembly includes a clamp, a moving seat, and an abutting member. The clamp is installed on the moving seat. The bottom of the moving seat is provided with a guide groove. The guide groove is slidably matched with the guide block;

[0024] The abutting member is installed on the side wall of the moving seat and at least partially passes through the moving seat to abut against the detection table.

[0025] The present invention also provides a detection method for a magnet detector, including the following steps:

[0026] Step 1: Fix the fixture with the magnet on the moving clamping assembly;

[0027] Step 2: Drive the moving clamping assembly to move on the detection table;

[0028] Step 3: The magnet approaches the sensor, the sensor generates a first electrical signal, and the display assembly generates a first magnetic flux after receiving the first electrical signal;

[0029] Step 4: The magnet moves away from the sensor, the sensor generates a second electrical signal, and the display assembly generates a second magnetic flux after receiving the second electrical signal.

[0030] The technical solution provided by the present invention has the following advantages and effects:

[0031] By rotating the adjustment knob, the adjustment knob is in threaded cooperation with all the clamping rods, driving all the clamping rods to move simultaneously, so that each clamping rod has a moving path closer to or farther from the central axis of the support body. When each clamping rod moves closer to the central axis of the support body, the clamping position between all the clamping rods becomes smaller; when each clamping rod moves farther from the central axis of the support body, the clamping position between all the clamping rods becomes larger. Therefore, the fixture can adapt to magnets of different diameters, fix magnets of different diameters, and the clamping position is non-magnetic, which does not affect the detection data and the detection data accuracy is high. Description of the Drawings

[0032] The accompanying drawings herein show specific examples of the technical solutions of the present invention and, together with the specific embodiments, form a part of the description for explaining the technical solutions, principles and effects of the present invention.

[0033] Unless otherwise specified or defined, in different drawings, the same reference numerals represent the same or similar technical features, and for the same or similar technical features, different reference numerals may also be used for representation.

[0034] Figure 1 is a schematic diagram of a fixture in an embodiment of the present invention Figure 1 ;

[0035] Figure 2 is an exploded view of the fixture in an embodiment of the present invention;

[0036] Figure 3 is a sectional view of the fixture in an embodiment of the present invention Figure 1 ;

[0037] Figure 4 is a sectional view of the fixture in an embodiment of the present invention Figure 2 ;

[0038] Figure 5 is a schematic diagram of a support base in an embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of a magnetic steel detector in an embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of a detection table in an embodiment of the present invention;

[0041] Figure 8 is a side view of the detection table in an embodiment of the present invention;

[0042] Description of reference numerals:

[0043] 100. Fixture;

[0044] 1. Support base; 11. Support block; 111. Guide groove; 12. First support plate; 121. Second guide hole; 2. Support main body; 21. Sealing end cover; 211. Activity cavity; 212. Second support plate; 213. Support ring; 214. Connection block; 22. Guide member; 221. First guide hole; 23. First fastener; 24. Second fastener; 3. Adjusting knob; 301. Internal thread; 4. Clamping rod; 41. Clamping position; 42. Clamping part; 43. Rack;

[0045] 200. Magnetic steel detector;

[0046] 5. Detection table; 51. Scale; 52. Guide block; 6. Moving clamping assembly; 61. Clamp; 611. First clamping ring; 612. Second clamping ring; 613. Pin shaft; 614. First clamping block; 615. Second clamping block; 616. Bolt; 62. Moving seat; 621. Contact member; 622. First sliding plate; 623. Second sliding plate; 63. Pointer; 7. Inductor; 71. Base; 72. Data line; 73. Hall element; 8. Display assembly; 81. Power cord. Detailed implementation mode

[0047] For the convenience of understanding the present invention, the specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings of the specification.

[0048] Unless otherwise specified or defined, the "first, second..." used herein is only for distinguishing names and does not represent a specific quantity or order.

[0049] Unless otherwise specified or defined, the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0050] It should be noted that when an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there can be an intermediate element; when an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time; when an element is considered to be "mounted on" another element, it can be directly mounted on the other element or there can be an intermediate element at the same time. When an element is considered to be "provided in" another element, it can be directly provided in the other element or there can be an intermediate element at the same time.

[0051] Embodiment 1

[0052] The present invention provides a fixture 100, as Figures 1 to 5As shown, it includes a support body 2, an adjustment knob 3, and three clamping rods 4. The three clamping rods 4 are circumferentially distributed around the support body 2. The support body 2 has guide grooves 111, and the number of the guide grooves 111 corresponds to the number of the clamping rods 4. At least part of each clamping rod 4 is arranged in the guide groove 111 and is in sliding fit with the inner wall of the support body 2 in the guide groove 111. An included angle is formed between the moving direction of the clamping rod 4 and the axis line of the support body 2, and the moving directions of the three clamping rods 4 intersect. The adjustment knob 3 is sleeved outside the support body 2, and the adjustment knob 3 is in threaded fit with the first ends of the three clamping rods 4. A clamping position 41 is formed between the second ends of the three clamping rods 4. The adjustment knob 3 is used to adjust the positions of the three clamping rods 4 so that the three clamping rods 4 have a first moving position and a second moving position. In the first moving position, the clamping position 41 becomes smaller; in the second moving position, the clamping position 41 becomes larger. The adjustment knob 3 is used to drive the three clamping rods 4 to move simultaneously, so that during the movement of the three clamping rods 4, magnets with different diameters can be adjusted or clamped.

[0053] Specifically, the clamping position 41 is used to place a magnet, and the magnet abuts against the inner walls of the second ends of the three clamping rods 4 at the clamping position 41. By rotating the adjustment knob 3, the adjustment knob 3 is in threaded fit with the three clamping rods 4 to drive the three clamping rods 4 to move simultaneously, so that the three clamping rods 4 have a moving path closer to or farther from the central axis of the support body 2. When the three clamping rods 4 move closer to the central axis of the support body 2, the clamping position 41 of the three clamping rods 4 becomes smaller; when the three clamping rods 4 move farther from the central axis of the support body 2, the clamping position 41 of the three clamping rods 4 becomes larger. Therefore, the fixture 100 can adapt to magnets with different diameters and fix the magnets with different diameters.

[0054] Moreover, the support body 2 is internally provided with guide grooves 111 corresponding to the clamping rods 4. The guide grooves 111 are used for the clamping rods 4 to move in the support body 2. The guide grooves 111 play a certain guiding role for the clamping rods 4 in the support body 2, improving the stability of the guide rods 4 during movement. When the three clamping rods 4 move stably, the size of the clamping position 41 is relatively stable accordingly, thereby improving the stability of clamping the magnet.

[0055] Furthermore, during the process of adjusting the size of the clamping position 41, it is only necessary to rotate the adjustment knob 3 clockwise or counterclockwise, greatly improving the convenience of operating the fixture 100.

[0056] Preferably, the clamping rod 4 includes a rack 43 and a clamping portion 42. The clamping portion 42 and the rack 43 are of an integral structure. The inner wall of the adjusting knob 3 has an internal thread 301 that cooperates with the rack 43. The rack 43 meshes with the internal thread of the adjusting knob 3 at a certain angle. When the adjusting knob 3 rotates clockwise and counterclockwise, the three racks move in a taper shape back and forth, realizing the change of the clamping diameter of the three racks to clamp magnetic steels with different diameters. The three clamping portions 42 support the magnetic steel in the circumferential direction of the magnetic steel, improving the stability of the magnetic steel at the clamping position 41.

[0057] Further, the clamping portion 42 is made of a non-magnetic material. When the three clamping portions 42 clamp the magnetic steel, it avoids the clamping portion 42 consuming the magnetism of the magnetic steel, improving the accuracy of detecting the magnetic steel.

[0058] The clamping principle of the fixture 100 is as follows: When the adjusting knob 3 rotates clockwise, the three clamping rods 4 are adjusted to move towards the central axis of the support body 2. When the magnetic steel is located on the central axis of the support body 2, the magnetic steel is fixed by the three moving clamping rods 4. When the adjusting knob 3 rotates counterclockwise, the three clamping rods 4 are adjusted to move away from the central axis of the support body 2, and the magnetic steel is disengaged from the clamping position 41.

[0059] For the convenience of assembling the support body 2. In some embodiments, the support body 2 includes a support base 1, a sealing end cover 21, and a guide member 22. The sealing end cover 21 and the guide member 22 are respectively arranged at the front and rear ends of the support base 1. The adjusting knob 3 is used to be sleeved on the outer wall of the support base 1. The front and rear ends of the support base 1 are used to fix the guide member 22 and the sealing end cover 21. During installation, the adjusting knob 3 can be first sleeved outside the support base 1, and then the guide member 22 and the sealing end cover 21 are installed. The guide member 22 and the sealing end cover 21 can limit the adjusting knob 3, making the position of the adjusting knob 3 relative stable on the support body 2.

[0060] Further, the guide member 22 has a first guide hole 221. A guide groove 111 is formed by the depression of the outer wall of the support base 1. The guide groove 111 communicates with the first guide hole 221. The first guide hole 221 is used for the first end of the clamping rod 4 to pass through, so that the clamping rod 4 at least partially enters the guide groove 111. The first guide hole 221 is used for the first end of the clamping rod 4 to pass through the guide member 22. The number of the first guide holes 221 corresponds to the number of the clamping rods 4. The first guide hole 221 is used to guide the clamping rod 4 into the guide groove 111. Moreover, the adjusting knob 3 is sleeved outside the support base 1. The inner wall of the adjusting knob 3 is used to block the opening of the guide groove 111. When the clamping rod 4 enters the guide groove 111, the inner wall of the adjusting knob 3 is exactly located on the outer wall of the clamping rod 4, enabling the internal thread 301 of the adjusting knob 3 to cooperate with the rack 43 of the clamping rod 4.

[0061] Preferably, the support base 1 further has a second guiding hole 121. An activity cavity 211 is formed between the support base 1 and the sealing end cover 21. The guiding groove 111 communicates with the activity cavity 211 through the second guiding hole 121. The second guiding hole 121 is used for the clamping rod 4 to enter the activity cavity 211. Since the activity cavity 211 is a sealed space, the second end of the clamping rod 4 is hidden in the activity cavity 211. When the three clamping rods 4 are in the first moving position, the three clamping rods 4 are outside the activity cavity 211, and the clamping position 41 becomes smaller. The clamping position 41 is used for clamping a magnet steel with a smaller diameter. When the three clamping rods 4 are in the second moving position, at least part of the three clamping rods 4 is in the activity cavity 211, and the clamping position 41 becomes larger. The clamping position 41 is used for clamping a magnet steel with a larger diameter. The activity cavity 211 has a space for the three clamping rods 4 to move. The three clamping rods 4 are adjusted by the adjusting knob 3 to meet the requirement of clamping magnet steels of different sizes.

[0062] Preferably, the support base 1 includes a support block 11 and a first support plate 12. Both the support block 11 and the first support plate 12 are circular structures. The outer diameter of the support block 11 is smaller than the outer diameter of the first support plate 12. The support block 11 and the first support plate 12 are fixed coaxially. The guiding groove 111 is formed on the outer wall of the support block 11, and the second guiding hole 121 is formed on the first support plate 12.

[0063] Specifically, the front and rear ends of the support block 11 are used to support the guiding member 22 and the sealing end cover 21. The adjusting knob 3 is located between the guiding member 22 and the first support plate 12. The first support plate 12 and the guiding member 22 are used to limit the adjusting knob 3 to prevent the adjusting knob 3 from moving in the axial direction of the axis of the support body 2 when rotating, and improve the stability of the adjusting knob 3 during adjustment. The bottom wall of the guiding groove 111 is used to support the clamping rod 4, so that the adjusting knob 3 is in threaded cooperation with the second end of the clamping rod 4.

[0064] Preferably, the sealing cover plate 21 includes a second support plate 212, a support ring 213, and a connecting block 214. The first end of the connecting block 214 is fixed to the support base 1, the second end of the connecting block 214 is installed at the inner end of the second support plate 212, the first end of the support ring 213 is installed at the outer end of the second support plate 212, and the second end of the support ring 213 is sleeved on at least part of the support base 1. An activity cavity 211 is formed between the inner wall of the support ring 213 and the second support plate 212. Specifically, the sealing end cover 21 is used to seal the end of the support base 1 to prevent the clamping rod 4 on the support base 1 from being exposed. At the same time, the sealing end cover 21 has an activity cavity 211 for the clamping rod 4 to move, which is convenient for the clamping rod 4 to move in the activity cavity 211 to adjust the size of the clamping position 41.

[0065] Preferably, the support body 2 further has a first fastener 23 and a second fastener 24. The connecting block 214 is fixed to the rear end of the support block 11 through the first fastener 23, and the guiding member 22 is fixed to the front end of the support block 11 through the second fastener 24.

[0066] Preferably, the support body 2 is in a conical shape, and the clamping position 41 is arranged at the smallest end of the support body 2; the guiding groove 111 extends along the inclined wall of the support body 2. Specifically, since the three clamping rods 4 move in the guiding groove 111 to adjust the size of the clamping position 41, an included angle is formed between the moving direction of the clamping rods 4 and the axial line direction of the support body 2. Therefore, by setting the support body 2 in a conical shape, the volume of the support body 2 can be reduced as much as possible, certain materials can be saved, the production cost of the fixture 100 can be reduced, and at the same time, the fixture 100 can be made more miniaturized.

[0067] Preferably, the inner wall of one end of the clamping rod 4 close to the clamping position 41 has an arc surface, and the arc surface is used to fit the outer wall of the magnetic steel. Specifically, the arc surface is used to fit the outer arc surface of the magnetic steel, so as to increase the contact area between the magnetic steel and the clamping rod 4 and improve the stability of the three clamping rods 4 for clamping the magnetic steel.

[0068] Embodiment 2

[0069] The present invention also provides a magnetic steel detector 200, as Figures 6 to 8 shown, which includes a detection table 5, a moving clamping assembly 6, a sensor 7, and a display assembly 8. The moving clamping assembly 6 and the sensor 7 are installed at both ends of the detection table 5, and the moving clamping assembly 6 is slidably connected to the detection table 5. The sensor 7 is electrically connected to the display assembly 8. The moving clamping assembly 6 is used to clamp the magnetic steel, and the magnetic steel is inductively matched with the sensor 7; the moving clamping assembly 6 has a first moving position and a second moving position. At the first moving position, the sensor 7 and the magnetic steel induce a first electrical signal; at the second moving position, the sensor 7 and the magnetic steel induce a second electrical signal; the display assembly 8 is used to receive the first electrical signal and the second electrical signal.

[0070] In this embodiment, the sensor 7 includes a base 71, a data line 72, and a Hall element 73. The Hall element 73 is fixed to the upper end of the base 71, the lower end of the base 71 is fixed to the detection table 5, the Hall element 73 is electrically connected to the first end of the display assembly 8 through the data line 72, the Hall element 73 generates an electrical signal and transmits it to the display assembly 8, and the second end of the display assembly 8 is electrically connected to a power supply through a power line 81.

[0071] Specifically, the moving clamping assembly 6 clamps the magnet steel through the fixture 100, drives the moving clamping assembly 6 to move on the detection table 5, so that the moving clamping assembly 6 is in the first moving position. After the inductor 7 senses the magnet steel, a first electrical signal is generated; when the moving clamping assembly 6 is in the second moving position, a second electrical signal is generated after the inductor 7 senses the magnet steel. After receiving the first electrical signal and the second electrical signal, the display assembly 8 displays the magnetic flux of the magnet steel at different positions, and can accurately determine whether the magnet steel meets the requirements according to the specified standard of the sensing range. This magnet steel detector 200 can quickly detect the performance of the magnet steel. In this embodiment, the specific structure of the fixture 100 has been introduced in detail in Embodiment 1 and will not be elaborated here one by one.

[0072] In some embodiments, the moving clamping assembly 6 includes a gripper 61, a fixture 100, and a moving base 62. The moving base 62 includes a first sliding plate 622. There is a guide block 52 on the detection table 5, and the first sliding plate 622 has a guide groove that cooperates with the guide block 52; the gripper 61 is installed on the first sliding plate 622, the fixture 100 is installed on the gripper 61, and the fixture 100 has a clamping position 41 for clamping the magnet steel. Specifically, through the sliding fit of the guide block 52 and the guide groove, the first sliding plate 622 slides on the detection table 5 to meet the requirement that the magnet steel moves in the same direction on the detection table 5. The gripper 61 is used to fix the fixture 100, and the fixture 100 is used to clamp the magnet steel. The gripper 61 and the fixture 100 are detachably installed, which is convenient for removing the fixture 100 from the detection table 5. Preferably, the guide groove is a dovetail groove, and the shape of the guide block 52 corresponds to the shape of the dovetail groove, which improves the stability of the first sliding plate 622 moving on the guide block 52.

[0073] In some embodiments, the moving base 62 further includes a second sliding plate 623 and an abutting member 621. The first sliding plate 622 is installed on the second sliding plate 623. At least part of the second sliding plate 623 is bent, and at least part of the second sliding plate 623 is disposed on the side wall of the detection table 5. The second sliding plate 623 allows the first end of the abutting member 621 to pass through, so that the abutting member 621 abuts against the side wall of the detection table 5. Specifically, when the first sliding plate 622 drives the second sliding plate 623 to move to the first moving position or the second moving position, the abutting member 621 is driven to be fixed to the side wall of the detection table 5, and the abutting member 621 improves the stability of the moving clamping assembly 6 in the first moving position or the second moving position. Preferably, the first end of the abutting member 621 is in threaded cooperation with the inner wall of the second sliding plate 623, which is convenient for adjusting the stability of the moving clamping assembly 6 on the detection table 5.

[0074] Preferably, the gripper 61 includes a first clamping ring 611, a second clamping ring 612, a pin shaft 613, a first clamping block 614, a second clamping block 615, and a bolt 616. The first clamping ring 611 is installed on the first sliding plate 622. The first end of the second clamping ring 612 is rotatably connected to the first end of the first clamping ring 611 through the pin shaft 613. The first clamping block 614 is installed at the second end of the first clamping ring 611, and the second clamping block 615 is installed at the second end of the second clamping ring 612. The first clamping block 614 and the second clamping block 615 are connected by the bolt 616. The fixture 100 is arranged between the first clamping ring 611 and the second clamping ring 612.

[0075] Specifically, an annular through - opening is formed between the first clamping ring 611 and the second clamping ring 612, and the through - opening is used to place the fixture 100. When installing the fixture 100, the first clamping ring 611 and the second clamping ring 612 are opened, the fixture 100 is placed at the through - opening, the first clamping ring 611 and the second clamping ring 612 are closed, and by rotating the bolt 616, the first clamping block 614 and the second clamping block 615 are brought closer to clamp the fixture 100 between the first clamping ring 611 and the second clamping ring 612.

[0076] Preferably, a scale 51 is provided on the inspection table 5 in the moving direction of the first sliding plate 622, and the first sliding plate 622 has a pointer 63 for marking the scale 51. Specifically, when the first sliding plate 622 moves to the first moving position, the pointer 63 records the first distance between the magnet and the inductor 7 through the scale 51. When the first sliding plate 622 moves to the second moving position, the pointer 63 records the second distance between the magnet and the inductor 7 through the scale 51. Based on the first distance, the second distance, and the magnetic fluxes of the display component 8 at the first moving position and the second moving position, the display component 8 displays the magnetic fluxes of the magnet at different positions, facilitating the comparison to output a conclusion on whether the magnet under test meets the product specification requirements.

[0077] The present invention also proposes a detection method for the magnet detector 200, which is characterized by including the following steps:

[0078] Step 1: Fix the fixture 100 with a magnet on the moving clamping assembly 6;

[0079] Step 2: Drive the moving clamping assembly 6 to move on the inspection table 5;

[0080] Step 3: The magnet approaches the inductor 7, the inductor 7 generates a first electrical signal, and after receiving the first electrical signal, the display component 8 generates a first magnetic flux;

[0081] Step 4: The magnet moves away from the inductor 7, the inductor 7 generates a second electrical signal, and after receiving the second electrical signal, the display component 8 generates a second magnetic flux.

[0082] Through the above method, the magnetic flux of magnetic steels with different diameters at different positions on the detection table 5 can be quickly detected, and the display component 8 displays the magnetic flux of the magnetic steels at different positions, which is convenient for comparing and outputting conclusions; this detection method can accurately determine whether the magnetic steel meets the requirements according to the specified standard of the induction range.

[0083] When citing the drawings for explanation, new features that appear are explained; in order to avoid the description being not concise enough due to repeated citation of the drawings, features that have been described are not cited one by one in the drawings when the description is clear.

[0084] The purpose of the above embodiments is to reproduce and deduce the technical solution of the present invention exemplarily, and to describe the technical solution, purpose and effect of the present invention completely. The purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the protection scope of the present invention.

[0085] The above embodiments are not an exhaustive list based on the present invention. In addition, there may be multiple other embodiments not listed. Any substitution and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A fixture, characterized in that, include: A support body, an adjustment knob, and a clamping rod assembly, wherein the clamping rod assembly includes at least two clamping rods, the support body has guide grooves, the number of the guide grooves corresponds to the number of the clamping rods, the clamping rods are at least partially disposed in the guide grooves, and are slidably matched with the inner wall of the support body in the guide grooves; The moving direction of any one of the clamping rods forms an angle with the axis of the supporting body, and the moving directions of the two clamping rods intersect; the adjusting knob is sleeved outside the supporting body, the adjusting knob is threadedly matched with the first ends of the two clamping rods, and a clamping position is formed between the second ends of the two clamping rods; The adjusting knob is used to adjust the position of the clamping rod assembly so that the clamping rod assembly has a first moving position and a second moving position. In the first moving position, the clamping position becomes smaller; in the second moving position, the clamping position becomes larger.

2. The clamp according to claim 1, characterized in that The support body comprises a support seat, a sealing end cover, and a guide member, wherein the sealing end cover and the guide member are respectively arranged at the front and rear ends of the support seat, the guide member has a first guide hole, the outer wall of the support seat is recessed to form the guide groove, and the guide groove is connected to the first guide hole; The first guide hole is used for the first end of the clamping rod to pass through, so that the clamping rod at least partially enters the guide groove.

3. The clamp according to claim 2, characterized in that The support seat also has a second guide hole, an active cavity is formed between the support seat and the sealing end cover, and the guide groove is connected with the active cavity through the second guide hole; When the two clamping rods are in the first moving position, the two clamping rods are outside the active cavity; when the two clamping rods are in the second moving position, the two clamping rods are at least partially inside the active cavity.

4. The clamp according to claim 3, characterized in that The support seat comprises a support block and a first support plate, the support block and the first support plate are both circular structures, the outer diameter of the support block is smaller than the outer diameter of the first support plate, and the support block and the first support plate are fixed coaxially; The guide groove is formed on the outer wall of the support block, and the second guide hole is formed on the first support plate.

5. The clamp according to claim 3, characterized in that: The sealing cover plate includes a second support plate, a support ring, and a connecting block. The first end of the connecting block is fixed to the support seat, the second end of the connecting block is installed on the inner end of the second support plate, the first end of the support ring is installed on the outer end of the second support plate, and the second end of the support ring is sleeved on at least a portion of the support seat. The active cavity is formed between the inner wall of the support ring and the second support plate.

6. The clamp according to any one of claims 1 to 5, characterized in that The support body is in the shape of a cone, and the clamping position is arranged at the smallest end of the support body; The guide groove is extended along the inclined wall of the support body.

7. The clamp according to any one of claims 1 to 5, characterized in that The clamping rod assembly includes three clamping rods, and the three clamping rods are distributed in the circumferential direction of the support body; The inner wall of one end of the clamping rod close to the clamping position has an arc-shaped surface, and the arc-shaped surface is used to fit with the outer wall of the magnetic steel; The end of the clamping rod away from the clamping position is provided with a rack, and the adjusting thread is provided with an internal thread, and the internal thread is meshed with the rack.

8. A magnetic steel detector, characterized in that: The invention comprises a test bench, a mobile clamping assembly, a sensor, a display assembly, and a fixture as claimed in any one of claims 1 to 7, wherein the fixture is mounted on the mobile clamping assembly, the mobile clamping assembly is movably arranged at a first end of the test bench, the sensor is mounted at a second end of the test bench, and the sensor is electrically connected to the display assembly; The clamping position of the clamp is used to clamp the magnetic steel, the magnetic steel is used to cooperate with the sensor, and the display component is used to display the magnetic flux of the magnetic steel.

9. The magnetic steel detector according to claim 8, characterized in that: The detection table is provided with a guide block, the movable clamping assembly comprises a clamp, a movable seat, and an abutment member, the clamp is mounted on the movable seat, the bottom of the movable seat is provided with a guide groove, and the guide groove is slidably matched with the guide block; The abutment member is installed on the side wall of the movable seat, and at least partially passes through the movable seat to abut against the detection platform.

10. A detection method for a magnetic steel detector, characterized in that: The following steps are involved: Fixing the clamp with magnetic steel to the mobile clamping assembly; Drive the mobile clamping assembly to move on the testing table; The magnetic steel is close to the sensor, the sensor generates a first electrical signal, and the display component generates a first magnetic flux after receiving the first electrical signal; The magnetic steel is far away from the sensor, the sensor generates a second electrical signal, and the display component generates a second magnetic flux after receiving the second electrical signal.

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