Longitudinal magnetizing device for long-axis workpiece

Abstract

The utility model discloses a longitudinal magnetizing device for a long-axis workpiece. The longitudinal magnetizing device comprises a transplanting cross beam, an electric brush carrier, an electric brush carrier driving mechanism and a magnetic powder liquid spraying assembly, according to the longitudinal magnetizing device for the long-axis workpiece, the magnetizing coil assembly is arranged on the movable electric brush carrier, and the electric brush copper bar is arranged on the electric brush carrier and is in contact connection with the slide wire conductor rail, so that power can be supplied to the magnetizing coil assembly at any time in the moving process of the electric brush carrier; the electric brush carrier can be moved back and forth along the axial direction of the workpiece, the workpiece is magnetized through the magnetizing coil assembly, and longitudinal magnetization of the long-axis workpiece is realized in a segmented magnetization mode, so that the flaw detection equipment is simpler in structure, more convenient to use, applicable to detection of various length-axis workpieces, good in universality and high in practicability. And the detection requirements of various different products can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic particle flaw detection, in particular to a longitudinal magnetization device for performing magnetic particle flaw detection on a long-axis workpiece. Background Art

[0002] Magnetic particle testing is a non-destructive testing method that detects defects on the surface or near the surface of ferromagnetic materials by accumulating magnetic particles in the leakage magnetic field near the defects. It is a flaw detection method that magnetizes workpieces made of magnetic materials such as steel, uses the characteristics of magnetic particles adsorbed by the leakage magnetic field at the defective part, and displays the surface defects and near-surface defects of the detected object according to the distribution of magnetic particles. When performing flaw detection on workpieces, it is usually necessary to magnetize them in two ways, circumferentially and longitudinally. Circumferential magnetization refers to directly energizing the workpiece, or allowing current to flow through a conductor that passes through a hollow workpiece hole, in order to establish a circumferential closed magnetic field around the workpiece and perpendicular to the workpiece axis in the workpiece, which is used to find longitudinal defects parallel to the workpiece axis, that is, defects parallel to the current direction. Longitudinal magnetization refers to a method of passing current through a coil surrounding the workpiece to magnetize the workpiece in the longitudinal direction, and the magnetic lines of force in the workpiece are parallel to the central axis of the coil. It is used to find circumferential defects perpendicular to the workpiece axis.

[0003] When performing flaw detection on shaft-shaped workpieces, if the workpiece is long, if it is to be longitudinally magnetized, multiple coils need to be wound on the workpiece, which will make the structure of the flaw detection equipment very complicated, the equipment is inconvenient to operate, and the cost of the equipment will be increased. Therefore, it is necessary to make further improvements to the longitudinal magnetization device for such shaft-shaped workpieces with long lengths. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a longitudinal magnetization device which is simple in structure, easy to use and can meet the requirements of magnetic particle flaw detection of long-axis workpieces.

[0005] A longitudinal magnetization device for a long-axis workpiece, comprising: a transplanting beam, on which a first busbar and a second busbar are provided; a brush holder, which is movably arranged on the transplanting beam, on which at least one magnetizing coil assembly is provided, and on which a first brush copper bar and a second brush copper bar are further provided, the first brush copper bar and the second brush copper bar are respectively connected to an input end and an output end of the magnetizing coil assembly, and the first brush copper bar and the second brush copper bar are slidably connected to the first busbar and the second busbar in a one-to-one correspondence; a brush holder driving mechanism, which is connected to the brush holder and is used to drive the brush holder to move back and forth along the transplanting beam; a magnetic powder liquid spraying assembly, which is fixed on the brush holder, and the magnetic powder flaw detection liquid spraying assembly comprises a magnetic powder liquid spraying head, and the magnetic powder liquid spraying head is used to spray magnetic powder liquid onto the workpiece.

[0006] Preferably, a guide rail is provided on the transplanting beam, and a slider cooperating with the guide rail is provided on the brush holder.

[0007] Preferably, the brush holder driving mechanism comprises a driving motor, a driving gear and a rack, the driving motor is connected to the driving gear, the rack is arranged on the transplanting beam, and the driving gear is meshed with the rack.

[0008] Preferably, the brush holder is further provided with a camera fixing frame, and the camera fixing frame is provided with a plurality of CCD cameras.

[0009] Preferably, the camera fixing bracket is connected to the brush holder via an up and down driving mechanism.

[0010] Preferably, the transplanting beam is connected to an upgrading mechanism, and the upgrading mechanism can drive the transplanting beam and the brush holder to move up and down.

[0011] The above technical scheme has the following beneficial effects: the longitudinal magnetization device for long-axis workpieces sets the magnetization coil assembly on a movable brush holder, and a brush copper bar is set on the brush holder to contact and connect with the busbar conductive rail, so that the magnetization coil assembly can be powered at any time during the movement of the brush holder. In this way, when the long-axis workpiece is longitudinally magnetized, the brush holder can be moved back and forth along the axial direction of the workpiece, and the workpiece is magnetized by the magnetization coil assembly. The longitudinal magnetization of the long-axis workpiece is realized by segmented magnetization, which makes the structure of the flaw detection equipment simpler and more convenient to use. It can also be applied to the detection of workpieces with different axis lengths, has good versatility, and can meet the detection requirements of a variety of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0013] Figure 2 It is a three-dimensional diagram of the brush holder according to the embodiment of the utility model.

[0014] Figure 3 This is a front view of the brush holder according to an embodiment of the utility model.

[0015] Figure 4 It is a structural schematic diagram of a camera fixing bracket according to an embodiment of the utility model.

[0016] Component number explanation: 1. Transplanting beam; 11. First busbar conductor rail; 12. Second busbar conductor rail; 13. Rack; 14. Guide rail; 2. Brush holder; 21. First brush bar; 22. Second brush bar; 23. Drive motor; 24. Slider; 25. Drive gear; 3. Camera holder; 31. CCD camera; 32. Camera support frame; 33. Vertical slide rail; 34. Rack; 35. Drive motor; 4. Magnetizing coil assembly; 5. Lifting mechanism; 6. Magnetic powder liquid spray head; 7. Workpiece. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the utility model will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the utility model. However, those skilled in the art will appreciate that the technical solution of the utility model can be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted.

[0019] like Figure 1As shown, the utility model discloses a longitudinal magnetization device for a long-axis workpiece, which includes a transfer beam 1, which mainly plays a supporting role, and a first busbar conductive rail 11 and a second busbar conductive rail 12 are provided on the transfer beam 1. A brush holder 2 is also provided on the transfer beam 1, and the brush holder 2 is movably arranged on the transfer beam 1. At least two magnetizing coil assemblies 4 are provided on the brush holder 2, and the number of magnetizing coil assemblies 4 can be adjusted according to the requirements of magnetization. A first brush copper bar 21 and a second brush copper bar 22 are also provided on the brush holder 2, and the first brush copper bar 21 and the second brush copper bar 22 are respectively connected to the input end and the output end of the magnetizing coil assembly 4, so that the workpiece of the magnetizing coil assembly 4 can be magnetized by energizing the first brush copper bar 21 and the second brush copper bar 22.

[0020] like Figure 2 , 3 As shown, the first brush copper bar 21 is slidably connected to the first busbar conductive rail 11, and the second brush copper bar 22 is slidably connected to the second busbar conductive rail 12, so that the magnetizing coil assembly 4 can be powered on by supplying power to the first busbar conductive rail 11 and the second busbar conductive rail 12. The brush holder 2 is connected to the brush holder driving mechanism, and the brush holder driving mechanism is used to drive the brush holder 2 to move back and forth along the transplanting beam 1. The brush holder 2 is also provided with a magnetic powder liquid spraying assembly, and the magnetic powder liquid spraying head 6 is provided on the magnetic powder flaw detection liquid spraying assembly, and the magnetic powder liquid spraying head 6 is used to spray the magnetic powder liquid on the workpiece 7.

[0021] As a specific implementation, the brush holder driving mechanism includes a driving motor 23, a driving gear 25 and a rack 13. The driving motor 23 is fixed on the brush holder 2, and the driving motor 23 is connected to the driving gear 25. The rack 13 is arranged on the transplanting beam 1, and the driving gear 25 is meshed with the rack 13. In this way, the driving motor 23 can drive the driving gear 25 to rotate, thereby driving the brush holder 4 to move back and forth along the transplanting beam 1. As a preferred implementation, a guide rail 14 can be arranged on the transplanting beam 1, and the guide rail 14 is parallel to the rack 13. A slider 24 cooperating with the guide rail 13 is arranged on the back of the brush holder 2. This structure can make the brush holder 2 move smoothly on the transplanting beam 1.

[0022] like Figure 4As shown, as a preferred embodiment of the utility model, a camera holder 3 is also provided on the brush holder 2, and a plurality of CCD cameras 31 are provided on the camera holder 3. The CCD camera 31 can take pictures of the workpiece 7 after the magnetic powder liquid is sprayed, so as to determine whether the workpiece 7 has quality defects. According to different detection requirements, the distance between the CCD camera 31 and the workpiece 7 needs to be adjusted, so the camera holder 3 is also connected to the brush holder 2 through an up and down driving mechanism. The up and down driving mechanism includes a driving motor 35, a vertical slide rail 33, a rack 34, a slider and a driving gear. The driving motor 35 is connected to the driving gear, and the vertical slide rail 33 and the rack 34 are arranged in parallel on the brush holder 2. The driving gear is meshed with the rack 34, and the slider is connected to the camera holder 3. The slider cooperates with the vertical slide rail 33, so that the driving motor 35 can drive the camera holder 3 to move up and down.

[0023] During use, since the diameter of the axial workpiece may be different, in order to ensure that the magnetizing coil assembly 4 is concentric with the axial workpiece, the height of the magnetizing coil assembly 4 needs to be adjusted. Therefore, the transplanting beam 1 is also connected to an upgrading mechanism 5, through which the transplanting beam 1 and the brush holder 2 can be driven to move up and down, so that the workpiece 7 can be better magnetized.

[0024] The longitudinal magnetization device for long-axis workpieces arranges a magnetization coil assembly on a movable brush holder, and a brush copper bar is arranged on the brush holder to contact and connect with the busbar conductive rail, so that the magnetization coil assembly can be powered at any time during the movement of the brush holder. In this way, when the long-axis workpiece is longitudinally magnetized, the brush holder can be moved back and forth along the axial direction of the workpiece, and the workpiece is magnetized by the magnetization coil assembly. The longitudinal magnetization of the long-axis workpiece is achieved by segmented magnetization, which makes the structure of the flaw detection equipment simpler and more convenient to use. In addition, the flaw detection equipment can be applied to the detection of workpieces with axes of various different lengths, has good versatility, and can meet the detection requirements of various different products.

[0025] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A longitudinal magnetization device for a long-axis workpiece, characterized in that: It includes: A transplanting crossbeam, on which a first busbar conductive rail and a second busbar conductive rail are provided; A brush holder, the brush holder is movably arranged on the transplanting crossbeam, the brush holder is provided with at least one magnetizing coil assembly, the brush holder is also provided with a first brush copper bar and a second brush copper bar, the first brush copper bar and the second brush copper bar are respectively connected to the input end and the output end of the magnetizing coil assembly, and the first brush copper bar and the second brush copper bar are slidably connected to the first busbar conductive rail and the second busbar conductive rail in a one-to-one correspondence; A brush holder driving mechanism, the brush holder driving mechanism is connected to the brush holder, and the brush holder driving mechanism is used to drive the brush holder to move back and forth along the transplanting beam; A magnetic powder liquid spraying assembly is fixed on the brush holder. The magnetic powder liquid spraying assembly comprises a magnetic powder liquid spraying head. The magnetic powder liquid spraying head is used to spray magnetic powder liquid onto the workpiece.

2. The longitudinal magnetization device for a long-axis workpiece according to claim 1, characterized in that: The transplanting crossbeam is provided with a guide rail, and the brush holder is provided with a sliding block matched with the guide rail.

3. The longitudinal magnetization device for a long-axis workpiece according to claim 1, characterized in that: The brush holder driving mechanism comprises a driving motor, a driving gear and a rack, the driving motor is connected to the driving gear, the rack is arranged on the transplanting beam, and the driving gear is meshed with the rack.

4. The longitudinal magnetization device for a long-axis workpiece according to claim 1, characterized in that: The brush holder is also provided with a camera fixing frame, and the camera fixing frame is provided with a plurality of CCD cameras.

5. The longitudinal magnetization device for a long-axis workpiece according to claim 4, characterized in that: The camera fixing frame is connected to the brush frame through an up and down driving mechanism.

6. The longitudinal magnetization device for a long-axis workpiece according to claim 1, characterized in that: The transplanting beam is connected to an upgrading mechanism, and the upgrading mechanism can drive the transplanting beam and the brush holder to move up and down.

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