CN111912898A - Double-mode magnetic powder flaw detection device with energized and energized spiral compression spring - Google Patents
Double-mode magnetic powder flaw detection device with energized and energized spiral compression spring Download PDFInfo
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- CN111912898A CN111912898A CN202010706341.6A CN202010706341A CN111912898A CN 111912898 A CN111912898 A CN 111912898A CN 202010706341 A CN202010706341 A CN 202010706341A CN 111912898 A CN111912898 A CN 111912898A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
Abstract
The invention relates to a spring flaw detection device. A double-mode magnetic powder inspection device with a coil compression spring energized and magnetized comprises a rack, wherein a spring shelf is arranged on the rack, two ends of the spring shelf are provided with an electrode structure and a magnet structure, the electrode structure comprises electrodes positioned on two sides of a spring to be inspected, and the electrodes are connected with an electrode driving piece; the magnet structure comprises two magnetic poles which are arranged in pairs, and the magnetic poles are connected with a magnetic pole driving piece; and electrifying the electrodes or magnetizing the magnetic poles in sequence to detect the transverse and longitudinal defects of the spring to be detected. The invention provides a spiral compression spring electrifying and magnetizing dual-mode magnetic powder inspection device which can directly finish the omnibearing inspection detection of the transverse direction and the longitudinal direction of a spring in a clamping mode under the condition of not changing the clamping state; the technical problems that the structure of the spring flaw detection is complex and the large-size heavy spring is inconvenient to detect by inserting the electrified guide rod into the center are solved.
Description
Technical Field
The invention relates to a spring flaw detection device, in particular to a double-mode magnetic powder flaw detection device with a coil compression spring energized and magnetized.
Background
The spiral compression spring, especially the heavy spring, the wire diameter of the spring is more than 20 mm, the product is characterized by larger weight, in order to further realize the light weight of the spring, such as building damping spring, heavy-load cushioning spring, etc.; and in the energy conservation and emission reduction of some engineering vehicles or moving machines, such as a bulldozer, an excavator tension spring and the like, the working stress is higher and higher, and the reliability of products is also required to be higher and higher. These products all require non-destructive inspection.
The coil spring is usually subjected to direct-energization magnetic powder inspection, as in the Chinese patent: the spring magnetic powder inspection method and device (CN 107632062A) comprises a frame, a pair of round copper plate electrodes, a round copper plate electrode insulation cushion layer, an electrode shaft insulation sleeve fixing handle, a screw rod support, a slide rail and magnetic suspension spraying equipment; the pair of round copper plate electrode surfaces are parallel and oppositely arranged on a pair of racks, one rack is arranged on the screw rod support or the two racks are respectively arranged on the two screw rod supports, the pair of round copper plate electrode surfaces are on the same straight line, the distance between the pair of round copper plate electrode surfaces covers the length of a spring to be detected, and the screw rod supports are meshed with the screw rod; the central hollow position of the spring workpiece, namely the central position of the electrode surface of the round copper plate, is in a hole shape, and an electrode shaft which is vertical to the electrode surface of the round copper plate is arranged in the hole and is mutually insulated with the electrode of the round copper plate.
In the application of direct-electrifying type magnetic powder inspection, the circumferential cracks or defects of the spring wire rod need to be electrified by the guide rod at the center, such as Chinese patents: "a bumper spring inspection device (CN 203011888U)", including fixing base, rotatory support, gyro wheel, connecting axle and rotary motor; a support seat is arranged at two ends of the fixed seat, a fixing plate is transversely arranged on the support seat, a piston of a first air cylinder on the fixing plate is connected with the moving plate, and a clamping electrode plate is arranged at one end of the moving plate; a circumferential magnetic pole penetrating rod inserted into the buffer spring is arranged beside the moving plate, and the circumferential magnetic pole penetrating rod is arranged oppositely and is insulated from the moving plate and the clamping electrode plate respectively; the clamping electrode plate and the two circumferential magnetic pole penetrating rods are connected with two poles of an external power supply, the end part of one circumferential magnetic pole penetrating rod is an outer convex cambered surface, the corresponding end of the other circumferential magnetic pole penetrating rod is an inner concave cambered surface, and the outer convex cambered surface is matched with the inner concave cambered surface. However, this detection method is very difficult for a heavy spring or a spring having a large shape and size.
Disclosure of Invention
The invention provides a spiral compression spring electrifying and magnetizing dual-mode magnetic powder inspection device which can directly finish the omnibearing inspection detection of the transverse direction and the longitudinal direction of a spring in a clamping mode under the condition of not changing the clamping state; the technical problems that the structure of the spring flaw detection is complex, the flaw detection of the spring is completed by changing different electrifying modes, and the flaw detection is inconvenient for a large-size heavy spring by inserting an electrifying guide rod into the center are solved.
The technical problem of the invention is solved by the following technical scheme: a double-mode magnetic powder inspection device with a coil compression spring energized and magnetized comprises a rack, wherein a spring shelf is arranged on the rack, electrode structures and magnet structures are arranged at two ends of the spring shelf, the electrode structures comprise electrodes positioned at two sides of a spring to be inspected, and the electrodes are connected with electrode driving pieces; the magnet structure comprises two magnetic poles which are arranged in pairs, and the magnetic poles are connected with a magnetic pole driving piece; and electrifying the electrodes or magnetizing the magnetic poles in sequence to detect the transverse and longitudinal defects of the spring to be detected. In a clamping state, the electrodes on two sides of the spring to be detected are electrified to form a magnetic field, so that the cracks of the spring wire in the circumferential direction are detected; and then after power is off, the magnetic pole structure magnetizes the spring to be detected, and generates a magnetic field direction different from that generated by the electrode, so that the axial crack or defect of the spring wire rod is detected. The electrification and the magnetization are implemented successively in a clamping state, magnetic fields in different directions are generated for the wire rods of the springs, so that the spring wire rods are subjected to all-dimensional flaw detection, the structure is simpler, the efficiency is high, and multiple clamping and installation are not needed. The two test modes are used for respectively detecting cracks in different directions, and the magnet is either electrified or magnetized, so that the magnetic fields generated by the two modes cannot influence each other, the high precision of the test is improved, and the possibility of generating electric sparks is reduced. The charging mode is used in the prior art, but different magnetic fields are arranged according to different charging modes, insulation consideration is needed when the central guide pillar is electrified, the central guide pillar is prevented from being influenced by straight-through electrodes on two sides, the structure is complex, and electric arcs are easy to generate.
Preferably, the electrode is made of copper, the contact surface of the electrode, which is connected with the end face of the spring to be detected, is a plane, and the area of the contact surface of the electrode is larger than the outer diameter of the end face of the spring to be detected. The plane contact guarantees the circular telegram stability, and copper electrode can also effectively prevent to magnetize at the magnetization in-process to the influence is to the flaw detection of another direction of spring wire rod.
Preferably, the electrode is provided with a through hole, the electrode is provided with a magnetic pole positioning sleeve, a magnetic pole is inserted in the magnetic pole positioning sleeve, and the magnetic pole can penetrate through the through hole in the electrode and is connected with the spring to be detected. The magnetic pole locating sleeve is welded on the electrode, so that the magnetic pole is convenient to install and move, when the spring is magnetized, the magnetic pole is inserted into the magnetic pole locating sleeve, and the end face of the magnetic pole is connected with the end face of the spring.
Preferably, the electrode driving part is a driving motor, the output end of the driving motor is connected with a sleeve through a screw rod, and the sleeve is connected with the electrode through an insulating rod. The movement of the sleeve drives the electrodes to move towards the two ends of the spring, the spring is clamped, and then the sleeve is electrified to finish the flaw detection of the spring wire in the circumferential direction.
Preferably, the magnetic pole driving part comprises a driving cylinder, the cylinder is fixed on the frame, and a cylinder shaft abuts against the magnetic pole. And under the magnetic conduction mode, the magnetic poles are abutted against the end face of the spring to be detected through the cylinder structure, so that the magnetization of the spring to be detected is realized, and the detection of the spring in the axial direction is carried out.
Therefore, the double-mode magnetic powder inspection device with the electrified and magnetized helical compression spring has the following advantages: the structure is simple, the magnetic pole connecting spring is ensured to detect omnibearing cracks and other defects on the surface of the spring by only needing clamping and installation once, adopting a mobile control contact direct electrifying mode successively, then stopping the electrifying mode and moving the magnetic pole contact to enable the magnetic pole connecting spring to implement the electrifying mode.
Drawings
Fig. 1 is a schematic view of a coil compression spring energized magnetic dual-mode magnetic particle inspection apparatus.
Fig. 2 is a schematic view of the positional arrangement of the spring to be inspected, the motor, and the magnetic poles.
Fig. 3 is a perspective view of the connection of the electrodes and magnetic poles in fig. 1.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
as shown in fig. 1, 2 and 3, the double-mode magnetic powder inspection device with the energized and energized coil compression spring comprises a machine frame 1, wherein a V-shaped spring shelf 8 is installed on the machine frame 1, and a spring 7 to be inspected is placed on the spring shelf 8. And an electrode structure and a magnet structure are respectively arranged at two ends of the spring shelf 8.
The electrode structure comprises two disc-shaped copper electrodes 6, wherein the diameter of each disc-shaped copper electrode 6 is larger than the outer diameter of the cross section of the spring 7 to be detected. A through hole 13 is opened in the center of the electrode 6. One end face of the electrode 6 is connected with the end face of the spring 7 to be detected, the other end face of the electrode 6 is welded with the magnetic pole positioning sleeve 5, the magnetic pole positioning sleeve 5 is provided with a magnetic pole positioning hole corresponding to the through hole 13, and the magnetic pole positioning hole is in transition fit with the magnetic pole 4. The electrode 6 is connected with a sleeve 10 through an insulating rod 9, the sleeve 10 is sleeved on a screw rod 11, the screw rod 11 is connected with the output end of a driving motor 12, the driving motor drives the screw rod 11 to rotate, so that the electrode 6 is driven to move, and the two ends of the electrode 6 are connected with the two ends of a spring to be detected, so that electrified detection is completed.
The magnetic pole structure comprises two square silicon magnetic poles 4, the silicon magnetic poles 4 are inserted in the magnetic pole positioning sleeve 5, the rear sides of the silicon magnetic poles 4 are connected with a cylinder shaft 3 through a connecting plate, the other end of the cylinder shaft 3 is arranged in a cylinder 2, and the cylinder 2 is fixed on a frame 1.
When flaw detection is carried out, the spring to be detected is placed on the spring shelf, then the driving motor is started, and the electrodes at the two ends of the spring to be detected are close to the spring to be detected until the electrodes are contacted. And then electrifying the electrode to complete circumferential flaw detection of the spring wire to be detected. Then the power supply is turned off, the cylinder is driven, the cylinder shaft pushes the silicon magnetic pole to pass through the through hole until the silicon magnetic pole is contacted with the end face of the spring to be detected, and magnetization is carried out, so that the detection of the spring wire in the axial direction is completed.
Claims (5)
1. The utility model provides a dual mode magnetic particle inspection device of coil compression spring circular telegram magnetic conduction, includes the frame, is equipped with spring shelf, its characterized in that in the frame: the two ends of the spring shelf are provided with an electrode structure and a magnet structure, the electrode structure comprises electrodes positioned on the two sides of the spring to be detected, and the electrodes are connected with an electrode driving part; the magnet structure comprises two magnetic poles which are arranged in pairs, and the magnetic poles are connected with a magnetic pole driving piece; and electrifying the electrodes or magnetizing the magnetic poles in sequence to detect the transverse and longitudinal defects of the spring to be detected.
2. The energized-magnetic-flux dual-mode magnetic powder inspection apparatus of the helical compression spring according to claim 1, characterized in that: the electrode is made of copper, the contact surface of the electrode, which is connected with the end face of the spring to be detected, is a plane, and the area of the contact surface of the electrode is larger than the outer diameter of the end face of the spring to be detected.
3. The coil compression spring energized magnetic dual mode magnetic particle inspection apparatus according to claim 1 or 2, characterized in that: the electrode is provided with a through hole, the electrode is provided with a magnetic pole positioning sleeve, a magnetic pole is inserted in the magnetic pole positioning sleeve, and the magnetic pole can penetrate through the through hole on the electrode and is connected with a spring to be detected.
4. The coil compression spring energized magnetic dual mode magnetic particle inspection apparatus according to claim 1 or 2, characterized in that: the electrode driving part is a driving motor, the output end of the driving motor is connected with a sleeve through a lead screw, and the sleeve is connected with the electrode through an insulating rod.
5. The coil compression spring energized magnetic dual mode magnetic particle inspection apparatus according to claim 1 or 2, characterized in that: the magnetic pole driving piece comprises a driving cylinder, the cylinder is fixed on the rack, and a cylinder shaft is abutted to the magnetic pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010706341.6A CN111912898B (en) | 2020-07-21 | 2020-07-21 | Spiral compression spring electrification and magnetism dual-mode magnetic powder inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010706341.6A CN111912898B (en) | 2020-07-21 | 2020-07-21 | Spiral compression spring electrification and magnetism dual-mode magnetic powder inspection device |
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| CN111912898A true CN111912898A (en) | 2020-11-10 |
| CN111912898B CN111912898B (en) | 2023-06-16 |
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| CN202010706341.6A Active CN111912898B (en) | 2020-07-21 | 2020-07-21 | Spiral compression spring electrification and magnetism dual-mode magnetic powder inspection device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB711521A (en) * | 1952-04-02 | 1954-07-07 | Vickers Electrical Co Ltd | Improvements relating to magnetic crack-detecting apparatus |
| JPS63218854A (en) * | 1987-03-09 | 1988-09-12 | Babcock Hitachi Kk | Flaw detection apparatus using magnetic powder |
| CN201402254Y (en) * | 2009-04-28 | 2010-02-10 | 湖南长沙湘仪检测设备有限公司 | Multi-electrode magnetic particle inspection machine |
| CN103018322A (en) * | 2012-12-11 | 2013-04-03 | 南车长江车辆有限公司 | Flaw detection device of buffer spring |
| CN202974947U (en) * | 2012-12-20 | 2013-06-05 | 江苏赛福探伤设备制造有限公司 | Magnetic powder flaw detection magnetization device for bearing rollers |
| CN104330463A (en) * | 2013-07-22 | 2015-02-04 | 李俊生 | Four-way magnetizing magnetic powder inspection apparatus |
| CN205449884U (en) * | 2015-12-28 | 2016-08-10 | 中原特钢股份有限公司 | A portable pipe end magnetization unit for magnetic particle inspection |
| CN205691544U (en) * | 2016-04-20 | 2016-11-16 | 江苏省迅达探伤科技有限公司 | A kind of magnaflux |
| CN107561155A (en) * | 2017-09-26 | 2018-01-09 | 王枫 | Special-shaped coils wheel is to magnetic powder inspection device |
| CN107632062A (en) * | 2017-09-22 | 2018-01-26 | 江苏中凯探伤设备制造有限公司 | A kind of spring magnetic powder inspection method and apparatus |
| CN207232077U (en) * | 2017-09-22 | 2018-04-13 | 江苏中凯探伤设备制造有限公司 | A kind of box cupling fluorescent magnetic particle inspection machine |
| CN207232076U (en) * | 2017-09-22 | 2018-04-13 | 江苏中凯探伤设备制造有限公司 | A kind of spring magnetic powder inspection electrode |
-
2020
- 2020-07-21 CN CN202010706341.6A patent/CN111912898B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB711521A (en) * | 1952-04-02 | 1954-07-07 | Vickers Electrical Co Ltd | Improvements relating to magnetic crack-detecting apparatus |
| JPS63218854A (en) * | 1987-03-09 | 1988-09-12 | Babcock Hitachi Kk | Flaw detection apparatus using magnetic powder |
| CN201402254Y (en) * | 2009-04-28 | 2010-02-10 | 湖南长沙湘仪检测设备有限公司 | Multi-electrode magnetic particle inspection machine |
| CN103018322A (en) * | 2012-12-11 | 2013-04-03 | 南车长江车辆有限公司 | Flaw detection device of buffer spring |
| CN202974947U (en) * | 2012-12-20 | 2013-06-05 | 江苏赛福探伤设备制造有限公司 | Magnetic powder flaw detection magnetization device for bearing rollers |
| CN104330463A (en) * | 2013-07-22 | 2015-02-04 | 李俊生 | Four-way magnetizing magnetic powder inspection apparatus |
| CN205449884U (en) * | 2015-12-28 | 2016-08-10 | 中原特钢股份有限公司 | A portable pipe end magnetization unit for magnetic particle inspection |
| CN205691544U (en) * | 2016-04-20 | 2016-11-16 | 江苏省迅达探伤科技有限公司 | A kind of magnaflux |
| CN107632062A (en) * | 2017-09-22 | 2018-01-26 | 江苏中凯探伤设备制造有限公司 | A kind of spring magnetic powder inspection method and apparatus |
| CN207232077U (en) * | 2017-09-22 | 2018-04-13 | 江苏中凯探伤设备制造有限公司 | A kind of box cupling fluorescent magnetic particle inspection machine |
| CN207232076U (en) * | 2017-09-22 | 2018-04-13 | 江苏中凯探伤设备制造有限公司 | A kind of spring magnetic powder inspection electrode |
| CN107561155A (en) * | 2017-09-26 | 2018-01-09 | 王枫 | Special-shaped coils wheel is to magnetic powder inspection device |
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| CN111912898B (en) | 2023-06-16 |
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