Magnetic particle flaw detector for gear ring workpiece

Abstract

The utility model discloses a magnetic particle flaw detector for a gear ring workpiece. The magnetic particle flaw detector comprises three power carrier roller driving assemblies, a gear ring magnetization assembly, a magnetic suspension liquid spraying assembly, an end face camera detection assembly and a peripheral face camera detection assembly. According to the magnetic powder flaw detector for the gear ring workpiece, a lower scraper is arranged on a supporting seat of a power carrier roller driving assembly, an upper scraper is arranged on a supporting stand column of a magnetic suspension liquid spraying head, and when flaw detection is conducted on the gear ring workpiece, the positions of the upper scraper and the lower scraper are adjusted, so that the upper scraper is located above the gear ring workpiece, and the lower scraper is located below the gear ring workpiece; and the upper and lower scrapers are separated from the gear ring workpiece by smaller distances, so that the upper and lower scrapers can scrape a magnetic suspension oil film on the end surface of the gear ring workpiece to be thin along with the rotation of the workpiece, and a thinner oil film is only formed on the end surface of the gear ring workpiece, so that the photographing of a CCD (Charge Coupled Device) camera is not influenced, and the detection precision of the flaw detector can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic particle flaw detection, and particularly relates to a magnetic particle flaw detector for detecting gear ring workpieces. Background Art

[0002] Magnetic particle flaw detection is a non-destructive testing method for detecting defects on the surface or near the surface of ferromagnetic materials by the accumulation of magnetic particles in the leakage magnetic field near the defects. Workpieces made of magnetic materials such as steel are magnetized, and the flaw detection method that utilizes the characteristic that the leakage magnetic energy at the defect part can adsorb magnetic particles, and the surface defects and near-surface defects of the detected object are displayed according to the distribution of magnetic particles. It is widely used in the quality detection of various metal workpieces.

[0003] In the equipment of the railway and wind power industries, there are a large number of large gear ring workpieces. The inner and outer diameters and lengths of the large gear ring workpieces are generally above 1000 / 1400 / 170 mm. Due to the large size of the workpieces, it brings great difficulty to the flaw detection of the workpieces. For example, the utility model patent CN103207233B discloses a magnetic particle flaw detector suitable for large gear ring workpieces, and its magnetization device is mainly composed of an opening and closing closed magnetic yoke and an opening and closing rectangular coil. The opening and closing closed magnetic yoke is composed of a "-" shaped magnetic yoke and a "凵" shaped magnetic yoke. An exciting coil is arranged on the "凵" shaped magnetic yoke; the "-" shaped magnetic yoke is supported on the machine frame through sliders and guide rails and is driven by a cylinder to realize the opening and closing with the "凵" shaped magnetic yoke. The opening and closing rectangular coil is composed of a "-" shaped conductor and a "凵" shaped conductor, and the two are meshed through tapered contacts to form a closed coil to mesh with the workpiece.

[0004] When detecting large gear ring workpieces, it is necessary to detect the upper and lower end faces and the teeth on the inner circumferential surface of the gear ring. However, in the actual detection process, due to the relatively thick thickness of the gear ring workpiece, a relatively thick magnetic suspension oil film will be formed on the upper and lower end faces of the workpiece after the workpiece is sprayed with magnetic suspension. Due to the relatively thick thickness of the oil film, when taking pictures with a CCD camera, it will affect the quality of the pictures, and further affect the detection accuracy of the product quality. Therefore, it is necessary to further improve this magnetic flaw detection equipment dedicated to gear ring workpieces. Content of the Utility Model

[0005] In order to overcome the above deficiencies in the prior art, the purpose of the utility model is to provide a magnetic particle flaw detector that can prevent the interference of the magnetic suspension oil film and can effectively improve the detection accuracy.

[0006] A magnetic particle flaw detector for a gear ring workpiece, comprising: three power roller drive assemblies, the three power roller drive assemblies are arranged in a "pin" shape, the power roller drive assembly is used to support and drive the gear ring workpiece to rotate, the power roller drive assembly comprises a support seat, and a lower scraper is arranged on the support seat; a gear ring magnetization assembly, the gear ring magnetization assembly comprises an upper magnetic yoke and a lower magnetic yoke, the lower magnetic yoke is fixed on the base, the upper magnetic yoke can be moved up and down and connected to the support frame, and the upper magnetic yoke and the lower magnetic yoke form a magnetization coil ; Magnetic suspension liquid spray assembly, the magnetic suspension liquid spray module includes a magnetic suspension liquid spray head, the magnetic suspension liquid spray head is arranged on a first supporting column, and an upper scraper is also provided on the first supporting column; an end face camera detection assembly, the end face camera detection assembly includes a second supporting column, and an upper end face CCD detection camera and a lower end face CCD detection camera are provided on the second supporting column; a circumferential surface camera detection assembly, the circumferential surface camera detection assembly includes a third supporting column, and a circumferential surface CCD detection camera is provided on the third supporting column.

[0007] Preferably, the power roller driving assembly also includes a driving motor, a power roller and a limiting roller, wherein the driving motor, the power roller and the limiting roller are arranged on the supporting seat, the driving motor is connected to the power roller, and the limiting roller is arranged on one side of the power roller.

[0008] Preferably, the power roller driving assembly is arranged on the first slide, and the power roller driving assembly can move back and forth along the first slide.

[0009] Preferably, a first supporting crossbeam is disposed on the first supporting column, a slide rail is disposed on the first supporting crossbeam, and the magnetic suspension liquid spray head and the upper scraper are slidably disposed on the first supporting crossbeam.

[0010] Preferably, the upper scraper is connected via a lifting drive mechanism, and the upper scraper can move up and down.

[0011] Preferably, an upper supporting beam and a lower supporting beam are provided on the second supporting column, the upper end surface CCD detection camera is slidably disposed on the upper supporting beam, and the lower end surface CCD detection camera is slidably disposed on the lower supporting beam.

[0012] Preferably, a second supporting crossbeam is provided on the third supporting column, and the peripheral CCD detection camera is slidably arranged on the second supporting crossbeam.

[0013] Preferably, the peripheral CCD detection camera is adjustable in angle on the second supporting beam.

[0014] The above technical scheme has the following beneficial effects: the magnetic particle flaw detector for the ring gear workpiece is provided with a lower scraper on the support seat of the power roller drive assembly, and an upper scraper is provided on the support column of the magnetic suspension spray head. When the ring gear workpiece is subjected to flaw detection, the positions of the upper and lower scrapers are adjusted so that the upper scraper is located above the ring gear workpiece, and the lower scraper is located below the ring gear workpiece, and a small distance is separated between the upper and lower scrapers and the ring gear workpiece. In this way, as the workpiece rotates, the upper and lower scrapers can scrape the magnetic suspension oil film on the end face of the ring gear workpiece thinly, and only form a thin oil film on the end face of the ring gear workpiece, so that it will not affect the photography of the CCD camera, thereby improving the detection accuracy of the flaw detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0016] Figure 2 It is a schematic structural diagram of a power roller drive assembly according to an embodiment of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the gear ring magnetization assembly according to an embodiment of the utility model.

[0018] Figure 4 It is a schematic structural diagram of the magnetic suspension liquid spraying assembly of an embodiment of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the end face camera detection component of an embodiment of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the peripheral camera detection component of an embodiment of the utility model.

[0021] Component number description: 1. Power roller drive assembly; 11. Support seat; 12. Power roller; 13. Drive motor; 14. Limit roller; 15. Lower scraper; 16. Lower scraper cylinder; 17. Slide; 2. Ring gear magnetization assembly; 21. Support frame; 22. Upper yoke; 23. Lower yoke; 24. Transmission chain; 25 Slide; 3. Magnetic suspension spray assembly; 31. First support column; 32. First support beam; 33. Magnetic suspension spray head; 34. Upper scraper; 35. Upper scraper cylinder; 4. End face camera detection assembly; 41. Second support column; 42. Lower support beam; 43. Upper support beam; 44. Upper end face CCD detection camera; 45. Lower end face CCD detection camera; 5. Peripheral camera detection assembly; 51. Third support column; 52. Second support beam; 53. Peripheral CCD detection camera. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present utility model. However, those skilled in the art will realize that the technical solutions of the present utility model can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be used.

[0024] As Figure 1 shown, the present utility model discloses a magnetic particle flaw detector for a ring gear workpiece, which includes three power idler drive assemblies 1, a ring gear magnetization assembly 2, a magnetic suspension liquid spraying assembly 3, an end face camera detection assembly 4, and a circumferential face camera detection assembly 5. The three power idler drive assemblies 1 are arranged in a "pin" shape, and the power idler drive assemblies 1 are used to support and drive the rotation of the ring gear workpiece. The ring gear magnetization assembly 2 is used to magnetize the ring gear workpiece, the magnetic suspension liquid spraying assembly 3 is used to spray the magnetic suspension liquid onto the surface of the ring gear workpiece, the end face camera detection assembly 4 is used to take pictures of the upper and lower end faces of the ring gear workpiece to determine whether there are quality defects on the upper and lower end faces of the ring gear workpiece, and the circumferential face camera detection assembly 5 is used to take pictures of the inner and outer circumferential faces of the ring gear workpiece to determine whether there are quality defects on the inner and outer circumferential faces of the ring gear workpiece.

[0025] As Figure 2As shown, the power roller drive assembly 1 includes a support seat 11, on which a power roller 12, a drive motor 13 and a limit roller 14 are arranged. The drive motor 13 is connected to the power roller 12, and the drive motor 13 drives the power roller 12 to rotate. The limit roller 14 is arranged on one side of the power roller. When performing magnetic particle flaw detection, the ring gear workpiece is placed on three power rollers 12, and the outer peripheral surface of the ring gear workpiece contacts the limit roller 14 for limit, so that the rotation of the power roller 12 can drive the ring gear workpiece to rotate together. A lower scraper 15 is also arranged on the support seat 11. When the ring gear workpiece is placed on the power roller 12, the lower scraper 15 is just below the ring gear workpiece, and a certain distance is separated between the lower scraper 15 and the ring gear workpiece. With this structure, when the magnetic suspension oil film on the lower end surface of the ring gear workpiece is too thick, the oil film can be scraped thin by the lower scraper 15. The lower scraper 15 is connected to a lower scraper cylinder 16 , through which the distance between the lower scraper 15 and the lower end surface of the gear ring workpiece can be adjusted.

[0026] As a preferred embodiment, the support seat 11 is slidably disposed on a slide 17, and the slides of the three power roller drive assemblies 1 point to the same center of a circle. This structure enables the magnetic particle flaw detector to meet the requirements of detecting gear ring workpieces with different diameters.

[0027] like Figure 3 As shown, the ring gear magnetization assembly 2 includes an upper yoke 22 and a lower yoke 23. The upper yoke 22 is connected to a support frame 21 through a lifting mechanism. The upper yoke 22 is connected to a transmission chain 24 of the lifting mechanism and can move up and down. When the upper yoke 22 and the lower yoke 23 are in contact, the upper yoke 22 and the lower yoke 23 form a magnetization coil. In use, the ring gear workpiece is set between the upper yoke 22 and the lower yoke 23, so that the ring gear workpiece can be magnetized. In order to meet the detection needs of ring gear workpieces of different diameters, the support frame 21 can be set on a slide 25, so that the position of the support frame 21 can be adjusted according to the ring gear workpieces of different diameters.

[0028] like Figure 4As shown, the magnetic suspension liquid spray module 3 includes a first supporting column 31, on which a first supporting beam 32 is provided, and the first supporting beam 32 can move up and down along the first supporting column 31, and a magnetic suspension liquid spray head 33 and an upper scraper 34 are provided on the first supporting beam 32, and the upper scraper 34 is connected to the first supporting beam 32 through an upper scraper cylinder 35, and the magnetic suspension liquid spray head 33 and the upper scraper 34 can move back and forth along the first supporting beam 32. During operation, the suspension spray head 33 and the upper scraper 34 are located above the ring gear workpiece. The suspension spray head 33 is used to spray magnetic suspension on the surface of the ring gear workpiece. The upper scraper 34 is just located above the ring gear workpiece. The upper scraper 34 is separated from the upper end face of the ring gear workpiece by a certain distance. In this way, when the oil film thickness on the upper end face of the ring gear workpiece is thicker, the oil film thickness on the upper end face of the ring gear workpiece can be scraped thin by the upper scraper 34. The distance between the upper scraper 34 and the upper end face of the ring gear workpiece can be adjusted by the upper scraper cylinder 35.

[0029] like Figure 5 As shown, the end face camera detection assembly 4 includes a second support column 41, on which an upper support beam 43 and a lower support beam 42 are provided, and both the upper support beam 43 and the lower support beam 42 can move up and down along the second support column 41. An upper end face CCD detection camera 44 is provided on the upper support beam 43, and a lower end face CCD detection camera 45 is provided on the lower support beam 42. The upper end face CCD detection camera 44 can move back and forth along the upper support beam 43, and the shooting angle of the upper end face CCD detection camera 44 can be adjusted. The lower end face CCD detection camera 45 can move back and forth along the lower support beam 42, and the shooting angle of the lower end face CCD detection camera 45 can be adjusted, so as to meet the detection requirements of gear ring workpieces with different diameters.

[0030] like Figure 6 As shown, the peripheral camera detection assembly 5 includes a third support column 51, a second support beam 52 is provided on the third support column 51, and a peripheral CCD detection camera 53 is slidably arranged on the second support beam 52. The peripheral CCD detection camera 53 is used to take pictures of the inner and outer peripheral surfaces of the gear ring workpiece. For the inner gear ring workpiece, sometimes it is necessary to take pictures of the teeth on the surface of the gear ring. Therefore, the peripheral CCD detection camera 53 is arranged on the second support beam 52 as an angle-adjustable structure to meet the shooting requirements at different angles.

[0031] The magnetic particle flaw detector for the ring gear workpiece is provided with a lower scraper on the support seat of the power roller drive assembly, and an upper scraper is provided on the support column of the magnetic suspension liquid spray head. When the ring gear workpiece is subjected to flaw detection, the positions of the upper and lower scrapers are adjusted so that the upper scraper is located above the ring gear workpiece, the lower scraper is located below the ring gear workpiece, and a small distance is separated between the upper and lower scrapers and the ring gear workpiece. In this way, as the workpiece rotates, the upper and lower scrapers can scrape the magnetic suspension liquid oil film on the end face of the ring gear workpiece thinly, and only a thin oil film is formed on the end face of the ring gear workpiece, so that the photography of the CCD camera will not be affected, thereby improving the detection accuracy of the flaw detector.

[0032] 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 in the present invention shall still be covered by the claims of the present invention.

Claims

1. A magnetic particle flaw detector for a gear ring workpiece, characterized in that: It includes: Three power roller drive assemblies, which are arranged in a "pin" shape, and are used to support and drive the gear ring workpiece to rotate. The power roller drive assembly includes a support seat, and a lower scraper is provided on the support seat; A gear ring magnetization assembly, the gear ring magnetization assembly comprising an upper magnetic yoke and a lower magnetic yoke, the lower magnetic yoke is fixed on the support seat, the upper magnetic yoke is movably connected to the support frame, and the upper magnetic yoke and the lower magnetic yoke form a magnetization coil; A magnetic suspension liquid spraying assembly, wherein the magnetic suspension liquid spraying assembly comprises a magnetic suspension liquid spraying head, wherein the magnetic suspension liquid spraying head is arranged on a first supporting column, and an upper scraper is also arranged on the first supporting column; An end face camera detection assembly, the end face camera detection assembly comprising a second supporting column, on which an upper end face CCD detection camera and a lower end face CCD detection camera are disposed; A circumferential surface camera detection component, the circumferential surface camera detection component comprises a third supporting column, and the third supporting column is provided with a circumferential surface CCD detection camera.

2. A magnetic particle flaw detector for a gear ring workpiece according to claim 1, characterized in that: The power roller driving assembly also includes a driving motor, a power roller and a limiting roller, wherein the driving motor, the power roller and the limiting roller are arranged on the supporting seat, the driving motor is connected to the power roller, and the limiting roller is arranged on one side of the power roller.

3. A magnetic particle flaw detector for a gear ring workpiece according to claim 2, characterized in that: The power roller driving assembly is arranged on the slide, and the power roller driving assembly can move back and forth along the slide.

4. The magnetic particle flaw detector for a gear ring workpiece according to claim 1, characterized in that: The first supporting column is provided with a first supporting crossbeam, the first supporting crossbeam is provided with a slide rail, and the magnetic suspension liquid spray head and the upper scraper are slidably arranged on the first supporting crossbeam.

5. The magnetic particle flaw detector for a gear ring workpiece according to claim 4, characterized in that: The upper scraper is connected via a lifting drive mechanism, and the upper scraper can move up and down.

6. The magnetic particle flaw detector for a gear ring workpiece according to claim 1, characterized in that: An upper supporting beam and a lower supporting beam are provided on the second supporting column, the upper end surface CCD detection camera is slidably arranged on the upper supporting beam, and the lower end surface CCD detection camera is slidably arranged on the lower supporting beam.

7. The magnetic particle flaw detector for a gear ring workpiece according to claim 1, characterized in that: A second supporting crossbeam is disposed on the third supporting column, and the peripheral surface CCD detection camera is slidably disposed on the second supporting crossbeam.

8. The magnetic particle flaw detector for a gear ring workpiece according to claim 7, characterized in that: The peripheral CCD detection camera is adjustable in angle on the second supporting beam.

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