CN112763116A - Magnetic tension detection device based on deflection structure and detection method thereof - Google Patents
Magnetic tension detection device based on deflection structure and detection method thereof Download PDFInfo
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- CN112763116A CN112763116A CN201911001852.1A CN201911001852A CN112763116A CN 112763116 A CN112763116 A CN 112763116A CN 201911001852 A CN201911001852 A CN 201911001852A CN 112763116 A CN112763116 A CN 112763116A
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- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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Abstract
The invention discloses a magnetic tension detection device based on a deflection structure, which comprises a shell, the deflection structure and a magnetic tension assembly, wherein the deflection structure and the magnetic tension assembly are arranged in the shell, and magnetic tension detection is carried out on the magnetic tension of a built-in deflection structure by combining the magnetic tension assembly through a magnetic block to be detected. Overall structure is stable, and its special beat structure can be quick stable to measure the magnetic pull fast. The shell adopts a low-carbon steel sleeve to carry out a magnetic shielding technology, so that external interference is overcome, and the detection precision is improved. The detection device is applied, and before detection, the standard component is firstly used for calibration, and a numerical value interval of qualified workpiece magnetic tension is obtained and set in the force transducer. When in detection, the magnetic block to be detected is placed on the upper surface of the shell, and whether the magnetic tension is in a numerical value interval of the magnetic tension of the qualified workpiece is determined through the deflection structure and the magnetic tension assembly so as to judge whether the workpiece is qualified.
Description
Technical Field
The invention relates to the technical field of automatic detection of workpieces made of special materials, in particular to a magnetic tension detection device based on a deflection structure and a detection method thereof.
Background
In the conventional quality detection of the magnet tension, a dynamometer is generally used for calculating the tension of the magnet so as to perform screening. However, the dynamometer uses a spring test, all manual operation is adopted, and the test efficiency is low. The deviation of the measured value is relatively large, the reference value of the recorded data is not high, and the accuracy is reduced after long-time use.
Chinese patent publication No. CN 103076129 a discloses an electromagnet tension testing device, which includes a bottom plate, an electromagnet fixing device and an electromagnet testing device are disposed on the bottom plate, and an iron block and a tension testing sensor are disposed on the testing device. When needs are tested the electro-magnet, fill in the fixed orifices with the electro-magnet, fix the electro-magnet, produce magnetic force after the electro-magnet circular telegram, hold the iron plate, then start the cylinder, pull back sensor connecting block, sensor with the iron plate, the cylinder just stops the function when iron plate and electro-magnet break away from, draw back the pulling force value between electro-magnet and the iron plate by the sensor note. Thereby judging whether the product is qualified.
This testing arrangement has overcome the great defect of spring dynamometer measuring error, but in the measurement process, needs to get into the magnetic path that awaits measuring artifical fixed, dismantles and fixes the next magnetic path that awaits measuring after the test, is not convenient for carry out short-term test to the magnetic path in batches, and efficiency of software testing is low.
Disclosure of Invention
The invention aims to overcome the defects that a dynamometer in the prior art has large measurement error and is inconvenient to rapidly detect mass magnetic blocks, and provides a magnetic tension detection device based on a deflection structure. Overall structure is stable, and its special beat structure can be quick stable to measure the magnetic pull fast. The shell adopts a low-carbon steel sleeve to carry out a magnetic shielding technology, so that external interference is overcome, and the detection precision is improved.
The invention also aims to provide a detection method, wherein before detection, the standard component is firstly used for calibration, and the numerical range of the qualified magnetic tension of the workpiece is obtained and set in the load cell. During detection, the annular magnetic block to be detected is placed on the upper surface of the shell, and whether the magnetic tension is in a numerical value interval of the magnetic tension of the qualified workpiece is determined through the deflection structure and the magnetic tension assembly so as to judge whether the workpiece is qualified.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the utility model provides a magnetism pulling force detection device based on beat structure, its characterized in that includes the shell, sets up beat structure and magnetism pulling force detection subassembly in the shell, wherein:
the top of the shell is provided with a positioning assembly for positioning the magnetic block to be detected;
the deflection structure comprises a magnetic conduction ring, a deflection frame which is driven by the magnetic conduction ring to deflect at the top and move upwards, and a stabilizing component for stabilizing the bottom of the deflection frame; the stabilizing assembly comprises a base fixed at the bottom of the deflection frame, a fixed plate fixed at the bottom of the shell, a centripetal spring group for pulling and fixing the base on the periphery of the fixed plate in a balanced manner, a support shaft fixed on the lower surface of the fixed plate and a support shaft socket formed in the center of the base, and the end part of the support shaft is in contact with the support shaft socket;
the magnetic tension detection assembly comprises a force measuring sensor fixed below the fixing plate and a probe seat fixed at the bottom of the force measuring sensor, a probe of the force measuring sensor and the magnetic conduction ring are coaxially arranged, the bottom of the probe seat is inserted into the probe seat, and the support shaft is fixed below the probe seat.
In the above technical solution, the positioning assembly includes a positioning sleeve fixed in the top opening of the housing, two positioning posts fixed above the positioning sleeve and protruding from the top surface of the housing, and an upper positioning surface formed on the top surface of the housing.
In the above technical solution, the deflection frame includes a circular top support and a circular bottom support coaxial with the magnetic conductive ring, a cradle frame is disposed between the top support and the bottom support, the magnetic conductive ring is fixed on an annular protrusion at the middle of the top support, the magnetic conductive ring and the annular protrusion are located in the top opening of the housing, and the base is fixed on the upper surface of the bottom support.
In the above technical scheme, the fixed plate is the trident board, the trident board is fixed through three stands the bottom of shell, centripetal spring group includes three materials, the same spring of length mutually, and the one end of each spring is fixed in on the base, the other end is fixed in on the edge of trident board, three spring axisymmetrics set up.
In the above technical scheme, the deflection structure further comprises a damping component, wherein the damping component comprises a groove formed by enclosing the annular protrusion and used for filling damping oil and a vertical rod fixed at the bottom of the positioning sleeve, wherein the vertical rod extends into the groove but does not contact with the bottom of the groove.
In the above technical scheme, the magnetic conductive ring is made of iron-nickel alloy.
In the above technical scheme, the housing includes an upper end cover, a lower end cover and a sleeve, the top opening is located in the middle of the upper end cover, a gap exists between the magnetic conductive ring and the top opening, and the upright post is fixed on the lower end cover.
In the technical scheme, the upper surface of the upper end cover is provided with an annular indicator light, and the annular indicator light is in communication connection with the force measuring sensor.
In the above technical solution, a door is provided on a side wall of the sleeve.
In the above technical solution, the sleeve is made of a magnetic shielding material.
In the technical scheme, the magnetic tension detection device further comprises a support, the support comprises a frame structure composed of a top plate, a bottom plate and two side plates, a middle partition plate is arranged between the top plate and the bottom plate, an opening with the shape and size identical to those of the top of the magnetic tension detection device based on the deflection structure is formed in the middle of the top plate, the bottom of the magnetic tension detection device based on the deflection structure is fixed on the middle partition plate, and the top of the magnetic tension detection device based on the deflection structure is flush with the top plate.
In the above technical solution, a shock absorber is arranged on the bottom support leg of the frame structure.
The magnetic block to be detected is positioned and placed on the upper surface of the shell through the positioning assembly, the magnetic block to be detected exerts upward magnetic pulling force on the magnetic conductive ring to drive the deflection structure to move upwards, a central shaft socket at the lower part of the deflection structure is matched with a support shaft below the force sensor to form a shaft socket, axial upward pressure is exerted on the force sensor, and the pressure measured by the force sensor is the magnetic pulling force of the magnetic block to be detected.
In the technical scheme, firstly, a standard workpiece is used for calibration to obtain a magnetic tension value interval of a qualified workpiece and is set in a force transducer, a magnetic block to be detected is placed on the upper surface of a shell during detection, and whether the magnetic tension is in the magnetic tension value interval of the qualified workpiece is determined through a deflection structure and a magnetic tension assembly so as to judge whether the magnetic tension is qualified.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the magnetic tension detection device based on the deflection structure, provided by the invention, the annular magnetic block to be detected is placed on the upper surface of the shell during detection, so that the magnetic tension can be measured through the deflection structure and the magnetic tension assembly, the continuous detection of the magnetic tension of the magnetic blocks in batches is facilitated, the manual operation steps are reduced, the magnetic tension detection device is suitable for being applied to a production line, and the detection efficiency is improved.
2. According to the magnetic tension detection device based on the deflection structure, the magnetic conduction ring is made of the iron-nickel alloy, so that the residual magnetism is extremely small and can be ignored while the magnetic conduction ring has high magnetic conductivity. Therefore, in the detection device, after a workpiece is measured and moved out, the lower magnetic conduction ring is in a state of negligible magnetism due to extremely small residual magnetism, and the measurement of the next annular magnetic block cannot be interfered, so that the influence of the residual magnetism on the magnetic eccentricity measurement during batch detection of the annular magnetic blocks is avoided, and the detection precision is improved.
3. The magnetic tension detection device based on the deflection structure is stable in structure, the special deflection structure can simulate the real working condition of a workpiece, and the distance between the workpiece and the magnetic conductive ring is set, so that the magnetic tension is measured quickly. The shell adopts a low-carbon steel sleeve to carry out a magnetic shielding technology, so that external interference is overcome, and the detection precision is improved.
4. The magnetic block magnetic tension detection method provided by the invention firstly uses a standard workpiece to calibrate so as to obtain a qualified workpiece magnetic tension value interval, a specific value is not required to be read during measurement, only whether the magnetic tension is in the value interval is required to be judged, whether the workpiece is qualified or not is displayed through the indicator lamp, and the method is simple and rapid.
Drawings
Fig. 1 is a schematic structural diagram of a comprehensive detection device for an annular magnetic block.
FIG. 2 is an enlarged view of a portion of the stabilizing element in the deflected configuration.
FIG. 3 is an enlarged top view of the integrated detector for ring magnets.
Fig. 4 is a schematic view of the stent structure.
In the figure: 1-a positioning sleeve, 1-1-a vertical rod, 2-a screw, 3-a magnetic conductive ring, 4-an upper end cover, 5-a top support, 5-1-a circular bulge, 6-a sleeve, 7-a hanging basket frame, 8-, 9-a fixing plate, 10-an ear ring, 11-a force sensor, 12-a probe seat, 13-a supporting shaft, 14-a supporting shaft socket, 15-a base, 16-a bottom support, 17-a fixing nut, 18-a stand column, 19-a lower end cover, 20-a positioning column, 21-a circular indicator lamp, 22-a dial seat, 23-an LED lamp, 24-a hexagonal screw, 25-a set screw, 32-a spring, 33-an arc gasket, 34-damping oil, 35-a magnetic block to be detected, 36-a top plate, 37-bottom plate, 38-middle clapboard and 39-shock absorber.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides a combine annular magnetic path magnetism pulling force detection device of beat structure, includes the shell, sets up beat structure and magnetism pulling force subassembly in the shell, wherein:
the top of shell is equipped with the locating component who is used for fixing a position magnetic path 35 to await measuring to guarantee that magnetic path 35 and the beat structure under the initial condition under await measuring keep coaxial, avoid measuring error, improve measurement accuracy.
The deflection structure comprises a magnetic conductive ring 3, a deflection frame which is driven by the magnetic conductive ring 3 to deflect at the top and move upwards, and a stabilizing component for stabilizing the bottom of the deflection frame; a gap is formed between the magnetic conductive ring 3 and a top opening formed in the top of the shell, and the magnetic conductive ring 3 is attracted by the to-be-tested annular magnetic block to drive the top of the deflection frame to deflect and move upwards in the gap; the stabilizing assembly comprises a base 15 fixed at the bottom of the deflection frame, a fixing plate 9 fixed at the bottom of the shell, a radial spring set for pulling and fixing the base 15 at the periphery of the fixing plate 9 in a balanced manner, a supporting shaft 13 fixed at the lower surface of the fixing plate 9 and a supporting shaft socket 14 formed at the center of the base 15, wherein the end part of the supporting shaft 13 is in contact with the supporting shaft socket 14;
the magnetic pull force detection assembly comprises a force measuring sensor 11 fixed below the fixing plate 9 and a probe seat 12 fixed at the bottom of the force measuring sensor 11, a probe of the force measuring sensor 11 and the magnetic conductive ring 3 are coaxially arranged, the bottom of the probe is inserted into the probe seat 12, and the support shaft 13 is fixed below the probe seat 12.
When the deflection structure is in a natural state, the load cell 11 returns to zero. The magnetic block 35 to be tested is placed on the positioning assembly for positioning, the magnetic block 35 to be tested exerts upward magnetic pulling force on the magnetic conductive ring 3 to drive the deflection structure to move upwards, the central shaft socket 14 at the lower part of the deflection structure is matched with the support shaft 13 below the force sensor 11 to form a shaft socket, axial upward pressure is exerted on the force sensor 11, and the pressure measured by the force sensor 11 is the magnetic pulling force of the magnetic block to be tested. The force measuring sensor 11 is in communication connection with a processor, namely an industrial personal computer, and the processor receives signals of the force measuring sensor 11 and displays a magnetic tension value.
In order to realize rapid continuous detection of workpieces in batches, firstly, a standard workpiece is used for calibration to obtain a magnetic tension value interval of a qualified workpiece and is set in the force transducer 11, a magnetic block 35 to be detected is placed on the upper surface of the shell during detection, and whether the magnetic tension is in the magnetic tension value interval of the qualified workpiece is determined through a deflection structure and a magnetic tension assembly so as to judge whether the workpiece is qualified.
Specifically, the positioning assembly includes a positioning sleeve 1 fixed in the top opening of the housing, two positioning posts 20 fixed above the positioning sleeve 1 and protruding from the top surface of the housing, and an upper positioning surface formed on the top surface of the positioning sleeve 1 and/or the top surface of the housing. The locating sleeve 1 is arranged in a top opening of the top of the shell, and the outer edge of the locating sleeve is fixed to the top of the shell through a screw 2. When the positioning device is used, the magnetic block to be measured is sleeved on the outer edges of the two positioning columns 20 to axially position the positioning columns and is arranged on the upper positioning surface. The two positioning columns 20 are used for positioning the side wall of the inner ring of the annular magnetic block, the upper positioning plane is used for positioning the bottom surface of the annular magnetic block, and the two positioning columns 20 and the upper positioning plane are matched with each other to achieve accurate positioning of the annular magnetic block.
Example 2
This embodiment is based on embodiment 1 and describes the deflection structure thereof in detail.
When the deflection structure is in a natural state (a state that a magnetic block to be tested is not placed), the deflection structure and the magnetic block to be tested (ring shape) are in the same axle center, the centripetal spring group provides upward pulling force for the whole deflection structure, and the gravity of the whole deflection structure is kept balanced. When the deflection structure is under the action of the magnetic force of the magnetic block to be tested, the supporting shaft 13 provides a point contact lower support for the deflection structure, so that the deflection structure can be ensured to be in radial deflection along the direction of the magnetic center under the action of the magnetic field of the magnetic block to be tested with magnetic eccentricity, as an inverted simple pendulum, by taking the contact point of the deflection structure and the lower support as a fulcrum.
Specifically, the deflection frame comprises a top support 5 and a bottom support 16 which are coaxial with the magnetic conduction ring 3, a hanging basket frame 7 is arranged between the top support 5 and the bottom support 16, the hanging basket frame 7 is composed of three or more support rods which are uniformly distributed, and the weight of the deflection structure is reduced as much as possible, and meanwhile, the magnetic tension detection assembly located inside the deflection frame is convenient to overhaul and maintain. The hanging basket frame 7 and the top support 5 are fixed through a set screw 25, the magnetic conduction ring 3 is fixed on the outer side of the annular bulge 5-1 in the middle of the top support 5, and the base 15 is fixed on the upper surface of the bottom support 16 through a fixing nut 17. The cradle frame 7 is deformable to allow the top of the yawing structure to deflect while the bottom remains stable.
Particularly, fixed plate 9 is the trident board, the trident board is fixed through three stands 18 the bottom of shell, spring assembly includes three materials, the same spring 32 of length, and the bottom of three springs 32 is fixed in on the base 15, the top is fixed in on the earrings 10 of trident board 9, three springs use the axle center of annular magnetic path sets up as the axisymmetric.
In order to avoid the influence of unbalanced mass (mass error possibly existing in the processing process) of the deflection structure on the magnetic eccentricity measurement, the deflection structure is restrained by three radial spring groups which are uniformly distributed and have consistent rigidity and size through structural design so as to avoid the random rotation of the deflection structure and further avoid the influence of the unbalanced mass of the deflection structure on the magnetic eccentricity measurement. And the impact of the deflection structure on the force sensor and the influence on measurement are avoided by the constraint action of the centripetal spring group on the deflection structure. In addition, by means of the constraint action of the centripetal spring group on the deflection structure, when the tested deflection structure is withdrawn after measurement is completed, the gravity of the whole deflection structure can be kept balanced, and the bearing of the deflection structure is realized, so that the reliability and the high efficiency of the measurement are ensured.
At the moment of placing the magnetic path that awaits measuring, magnetic ring 3 drives the beat structure and takes place instantaneous swing, after the beat takes place, because inertial action, unstable beat structure can produce and rock. For guaranteeing the rapid stabilization of the deflection structure in the measurement, alleviate the fluctuation of the deflection structure in the measurement process, make the measurement have stability, the deflection structure still includes damping subassembly, damping subassembly includes that annular protrusion 5-1 encloses the recess that closes the formation and be used for filling damping oil 34 and is fixed in 1 bottom of position sleeve stretches into in the recess but montant 1-1 of contactless tank bottom, montant 1-1 with damping oil 34 forms the damping, montant 1-1 contactless tank bottom, for the structural shift up headspace of deflection. The damping oil is composed of special components with flexible retardation, and can reduce the shaking of the deflection structure and promote the deflection structure to be stable as soon as possible, thereby improving the measurement efficiency.
The magnetic conduction ring 3 is made of iron-nickel alloy. Because the iron-nickel alloy is a soft magnetic material, the remanence is extremely small and can be ignored while the iron-nickel alloy has high magnetic permeability. Therefore, in the detection device, after a workpiece is measured and moved out, the magnetic conduction ring 3 is in a state of negligible magnetism due to extremely small residual magnetism, and the measurement of the next annular magnetic block cannot be interfered.
Example 3
This embodiment is based on embodiment 1 and embodiment 2 and describes the housing and the support structure in detail.
The shell comprises an upper end cover 4, a lower end cover 19 and a sleeve 6, an arc gasket 33 is arranged between the lower end cover 19 and the sleeve 6, the top of the upper end cover 4 is provided with an opening, a gap exists between the magnetic conduction ring 3 and the opening formed at the top of the upper end cover 4, and the upright column 18 is fixed on the lower end cover 19.
And an annular indicator light 21 is arranged on the upper surface of the upper end cover 4, and the annular indicator light 21 is in communication connection with the load cell 11. The annular indicator light 21 is embedded on the upper end cover 4, the upper surface of the annular indicator light is flush with the upper surface of the upper end cover 4, a dial seat 22 is arranged below the annular indicator light, and the dial seat 22 is fixed on the upper end cover 4 through a hexagon screw 24. Red and green LED lamps 23 are uniformly and alternately arranged below the annular indicator lamp 21. The force sensor 11 is set with a magnetic tension value interval of the qualified annular magnetic block, and when the magnetic tension value measured by the magnetic block to be measured is in the value interval, the green indicator light is turned on, and meanwhile, the value on the industrial personal computer is displayed as green, so that the product is qualified. When the measured magnetic tension is outside the numerical value interval, the red indicator light is turned on, and the numerical value on the industrial personal computer is displayed in red, so that the product is unqualified.
Be provided with door 8 on the lateral wall of sleeve 6, open the door and can conveniently maintain the operation to inside components and parts.
The sleeve 6 is made of magnetic shielding material, preferably low-carbon steel. Due to the magnetic shielding effect of the outer sleeve of the low-reluctance ferromagnetic material, magnetic lines of force of the interference magnetic field are transferred and shunted along the surface of the sleeve, so that a deflection structure in the detection device is in a relatively closed magnetic circuit environment, and the influence of the dynamic interference magnetic field on measurement in a production detection field is avoided.
For convenience in measurement, the magnetic tension detection device based on the deflection structure further comprises a support, the support comprises a frame structure composed of a top plate 36, a bottom plate 37 and two side plates 40, a middle partition plate 38 is arranged between the top plate 36 and the bottom plate 37, an opening with the same shape and size as the top of the magnetic tension detection device based on the deflection structure is formed in the middle of the top plate 36, the bottom of the magnetic tension detection device based on the deflection structure is fixed on the middle partition plate 38, and the top of the magnetic tension detection device based on the deflection structure is flush with the top plate 36. The top plate 36 forms a detection platform for convenient and rapid detection.
Preferably, a shock absorber 39 is provided on the bottom foot of the frame structure to prevent measurement deviation due to vibration.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (14)
1. The utility model provides a magnetism pulling force detection device based on beat structure, its characterized in that includes the shell, sets up beat structure and magnetism pulling force detection subassembly in the shell, wherein:
the top of the shell is provided with a positioning assembly for positioning the magnetic block (35) to be detected;
the deflection structure comprises a magnetic conduction ring (3), a deflection frame which is driven by the magnetic conduction ring (3) to deflect at the top and move upwards, and a stabilizing component for stabilizing the bottom of the deflection frame; the stabilizing assembly comprises a base (15) fixed at the bottom of the deflection frame, a fixing plate (9) fixed at the bottom of the shell, a centripetal spring group for pulling and fixing the base (15) on the periphery of the fixing plate (9) in a balanced manner, a supporting shaft (13) fixed on the lower surface of the fixing plate (9) and a supporting shaft socket (14) formed in the center of the base (15), and the end part of the supporting shaft (13) is in contact with the supporting shaft socket (14);
the magnetic pull force detection assembly comprises a force measuring sensor (11) fixed below the fixing plate (9) and a probe seat (12) fixed at the bottom of the force measuring sensor (11), a probe of the force measuring sensor (11) and the magnetic conductive ring (3) are coaxially arranged, the bottom of the probe is inserted into the probe seat (12), and the supporting shaft (13) is fixed below the probe seat (12).
2. The magnetic pull force detection device based on the deflection structure of claim 1, wherein the positioning assembly comprises a positioning sleeve (1) fixed in the top opening of the housing, two positioning posts (20) fixed above the positioning sleeve (1) and protruding from the top surface of the housing, and an upper positioning surface formed on the top surface of the housing.
3. The magnetic tension detection device based on the deflection structure of claim 1, wherein the deflection frame comprises a top support (5) and a bottom support (16) which are concentric with the magnetic conductive ring (3) and are circular, a basket hanging frame (7) is arranged between the top support (5) and the bottom support (16), the magnetic conductive ring (3) is fixed on an annular protrusion (5-1) at the middle part of the top support (5), the magnetic conductive ring (3) and the annular protrusion (5-1) are positioned in the top opening of the shell, and the base (15) is fixed on the upper surface of the bottom support (16).
4. The magnetic pull force detecting device based on the deflection structure of claim 1, wherein the fixed plate (9) is a three-forked plate, the three-forked plate is fixed at the bottom of the housing by three posts (18), the radial spring set comprises three springs (32) of the same material and length, one end of each spring (32) is fixed on the base (15), the other end is fixed on the edge of the three-forked plate (9), and the three springs are arranged in an axisymmetric manner.
5. The magnetic pull detection device based on the deflection structure of claim 3, wherein the deflection structure further comprises a damping component, and the damping component comprises a groove which is formed by enclosing the annular protrusion (5-1) and is used for filling damping oil (34) and a vertical rod (1-1) which is fixed at the bottom of the positioning sleeve (1) and extends into the groove without contacting with the bottom of the groove.
6. The magnetic pull force detection device based on the deflection structure of claim 1, wherein the magnetic conductive ring (3) is made of iron-nickel alloy.
7. The magnetic pull detection device based on the deflection structure of claim 4, wherein the housing comprises an upper end cover (4), a lower end cover (19) and a sleeve (6), the top opening is located in the middle of the upper end cover (4), a gap exists between the magnetic conductive ring (3) and the top opening, and the upright column (18) is fixed on the lower end cover (19).
8. The magnetic tension detection device based on the deflection structure of claim 7, wherein the upper surface of the upper end cover (4) is provided with an annular indicator light (21), and the annular indicator light (21) is in communication connection with the load cell (11).
9. The magnetic pull force detection device based on a deflection structure according to claim 7, characterized in that a door (8) is provided on the side wall of the sleeve (6).
10. A magnetic pull force detecting device based on a yawing structure according to claim 7, wherein the sleeve (6) is made of a magnetic shielding material.
11. The magnetic tension detection device based on the deflection structure as claimed in claim 1, further comprising a support, wherein the support comprises a frame structure consisting of a top plate (36), a bottom plate (37) and two side plates (40), a middle partition plate (38) is arranged between the top plate (36) and the bottom plate (37), an opening with the same shape and size as the top of the magnetic tension detection device based on the deflection structure is formed in the middle of the top plate (36), the bottom of the magnetic tension detection device based on the deflection structure is fixed on the middle partition plate (38), and the top of the magnetic tension detection device based on the deflection structure is flush with the top plate (36).
12. A magnetic pull sensing device based on a yawing structure according to claim 11, wherein a damper (39) is provided on the bottom leg of the frame structure.
13. The method for detecting the magnetic pulling force based on the deflection structure of any one of claims 1 to 12, wherein the magnetic block (35) to be detected is positioned and placed on the upper surface of the casing through the positioning assembly, the magnetic block (35) to be detected exerts an upward magnetic pulling force on the magnetic conductive ring (3) to drive the deflection structure to move upwards, the central shaft socket (14) at the lower part of the deflection structure forms a shaft socket fit with the supporting shaft (13) below the load cell (11), and exerts an axially upward pressure on the load cell (11), and the load cell (11) detects the pressure, namely the magnetic pulling force of the magnetic block (35) to be detected.
14. The detecting method as claimed in claim 13, wherein the standard workpiece is firstly used for calibration to obtain the magnetic tension value interval of the qualified workpiece and set in the load cell (11), the magnetic block (35) to be detected is placed on the upper surface of the housing during detection, and whether the magnetic tension is in the magnetic tension value interval of the qualified workpiece is determined through the deflection structure and the magnetic tension assembly to judge whether the workpiece is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911001852.1A CN112763116A (en) | 2019-10-21 | 2019-10-21 | Magnetic tension detection device based on deflection structure and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911001852.1A CN112763116A (en) | 2019-10-21 | 2019-10-21 | Magnetic tension detection device based on deflection structure and detection method thereof |
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| CN112763116A true CN112763116A (en) | 2021-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482591A (en) * | 2023-04-28 | 2023-07-25 | 华中科技大学 | Device for measuring residual magnetism of object and rapidly demagnetizing |
-
2019
- 2019-10-21 CN CN201911001852.1A patent/CN112763116A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482591A (en) * | 2023-04-28 | 2023-07-25 | 华中科技大学 | Device for measuring residual magnetism of object and rapidly demagnetizing |
| CN116482591B (en) * | 2023-04-28 | 2024-03-29 | 华中科技大学 | Device for measuring residual magnetism of object and rapidly demagnetizing |
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