A chamfering device for neodymium iron boron magnets

Abstract

This invention belongs to the technical field of NdFeB magnet grinding, and relates to a chamfering device for NdFeB magnets. The device includes a support frame, a rotating shaft, a feeding tray, sealing gaskets, a drive mechanism, and a grinding mechanism. Two support frames are provided, one at the front and one at the back, with a rotating shaft rotatably connected between them. The feeding tray is connected to the middle of the rotating shaft. The feeding tray has multiple interconnected receiving slots and grooves evenly spaced circumferentially on its surface. Sealing gaskets are placed on the grooves. A drive mechanism for rotating the feeding tray is provided between the feeding tray and the support frames. The grinding mechanism is mounted on the support frame. This invention, when grinding tile-shaped NdFeB magnets, can simultaneously grind the magnets using four conical grinding wheels while they are being fed in, and can grind all four corners of the tile-shaped NdFeB magnet in one pass, resulting in higher efficiency in chamfering tile-shaped NdFeB magnets.

Description

Technical Field

[0001] This invention belongs to the technical field of NdFeB magnet grinding, and relates to a chamfering device for NdFeB magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets are high-performance rare-earth permanent magnet materials composed of neodymium, iron, and boron. They possess extremely high magnetic energy product and coercivity, making them among the strongest known permanent magnets. NdFeB magnets are widely used in high-tech fields such as electric vehicles, wind turbines, computer hard drives, and medical devices. However, during the production and processing of NdFeB magnets, cutting and shaping can result in sharp edges and burrs, especially for tile-shaped magnets. This not only affects the product's appearance but can also lead to assembly difficulties or damage to other components. Therefore, chamfering is necessary for the edges of NdFeB magnets.

[0003] Currently, the common method for chamfering tile-shaped NdFeB magnets is to use four grinding rollers, arranged symmetrically in pairs, in conjunction with a lifting platform. Specifically, the tile-shaped NdFeB magnets are transported to the lifting platform, which then grinds the two upper corners as it rises and the two lower corners as it descends. This transmission and grinding process lacks continuity and can only grind two corners at a time, resulting in low chamfering efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a chamfering device for neodymium iron boron magnets.

[0005] Technical Solution: A chamfering device for neodymium iron boron magnets includes a support frame, a rotating shaft, a feeding tray, sealing gaskets, a drive mechanism, and a grinding mechanism. Two support frames are provided, one at the front and one at the back, with a rotating shaft rotatably connected between them. The feeding tray is connected to the middle of the rotating shaft. The feeding tray has multiple interconnected receiving slots and grooves evenly spaced circumferentially. Sealing gaskets are provided on the grooves. A drive mechanism for rotating the feeding tray is provided between the feeding tray and the support frame. A grinding mechanism for grinding the tile-shaped neodymium iron boron magnets is provided on the support frame. The grinding mechanism includes… It includes a servo motor, a drive shaft, a mounting bracket, a first splined shaft, a conical grinding wheel, a second splined shaft, an adjustment component, and a transmission component. The servo motor is mounted on one of the support brackets, and mounting brackets are slidably connected to both support brackets. A drive shaft is rotatably connected between the two mounting brackets. The first splined shaft is connected to both sides of the drive shaft. The output shaft of the servo motor and the second splined shaft are both mounted on the other support bracket. Conical grinding wheels are slidably connected to both the first and second splined shafts. The support brackets are provided with adjustment components for adjusting the position of the mounting brackets, and a transmission component is provided between the drive shaft and the support brackets.

[0006] As a preferred embodiment of the present invention, the driving mechanism includes an internal gear ring, a drive motor, and a drive gear. The internal gear ring is connected inside the feeding tray, and the drive motor is mounted on one of the support frames. The drive gear is connected to the output shaft of the drive motor, and the drive gear meshes with the internal gear ring.

[0007] As a preferred embodiment of the present invention, the adjustment assembly includes a side plate, a sliding plate, and an adjustment screw. The side plate is connected between two support frames, and the sliding plate is slidably connected to the side plate. The sliding plate is connected to two mounting frames, and the adjustment screw is rotatably connected to the side plate. The adjustment screw is threadedly engaged with the sliding plate.

[0008] As a preferred embodiment of the present invention, the transmission assembly includes a slider, an elastic element, a pulley, and a transmission belt. Sliders are slidably connected to both support frames. Pulleys are connected to the slider, the front and rear ends of the transmission shaft, and the two front and rear splined shafts. The pulleys on the slider rotate and are connected to the slider. A transmission belt is wound between the three pulleys on the front and rear sides. The pulleys and the transmission belt form a triangle. An elastic element is connected between the slider and the support frame.

[0009] As a preferred embodiment of the present invention, it further includes a locking bolt. Both the first spline shaft and the second spline shaft are provided with locking grooves, and the tapered grinding wheel is connected to the locking bolt by a thread.

[0010] As a preferred embodiment of the present invention, a fixing mechanism is further included. The fixing mechanism includes a cylinder, a suction pipe, a connecting frame, a guide frame, a guide rod, a second elastic element, a T-shaped rod, and a piston plate. The feeding tray is connected to cylinders of the same number as the receiving groove along its circumferential spacing. One end of each cylinder is connected to a suction pipe, which is connected to the receiving groove. Connecting frames are connected to both sides of the rotating shaft. A guide frame is connected to the connecting frame. The guide frame is arc-shaped and has an inclined guide rod connected to it. A piston plate is slidably connected inside the cylinder. A second elastic element is connected between the piston plate and the cylinder. A T-shaped rod is connected to the piston plate. The guide frame and the guide rod are both located at the movement trajectory of the T-shaped rod.

[0011] As a preferred embodiment of the present invention, it further includes an isolation plate, wherein the receiving groove is provided with an isolation plate, and the isolation plate is provided with vent holes evenly spaced apart.

[0012] As a preferred embodiment of the present invention, it further includes an arc-shaped shielding frame, which is connected between the two support frames. The arc-shaped shielding frame can cover the receiving groove and the suction pipe.

[0013] As a preferred embodiment of the present invention, it further includes connecting plates and belt conveyor groups. Two connecting plates are connected to the lower part of each of the two support frames, and belt conveyor groups are installed between the four connecting plates. Slag discharge holes are evenly spaced on the belt conveyor groups.

[0014] The present invention has the following advantages: 1. When grinding the tile-shaped NdFeB magnet, the present invention can simultaneously grind the tile-shaped NdFeB magnet by using four conical grinding wheels while the tile-shaped NdFeB magnet is being transported, and can grind all four corners of the tile-shaped NdFeB magnet at once, making the grinding and chamfering of the tile-shaped NdFeB magnet more efficient.

[0015] 2. In the chamfering process, the present invention can adjust the chamfer area on the tile-shaped neodymium iron boron magnet by adjusting the distance between the two conical grinding wheels, thereby achieving the function of adjusting the chamfer area.

[0016] 3. After the beveling of the tile-shaped NdFeB magnet is completed, the beveling NdFeB magnet will fall onto the belt conveyor group. The belt conveyor group will send the beveling NdFeB magnet out. At the same time, the impurities generated in the tile-shaped NdFeB magnet can be discharged through the slag discharge hole on the belt conveyor group, so as to achieve the effect of separating the tile-shaped NdFeB magnet from the impurities generated during the grinding process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the drive mechanism and grinding mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the grinding mechanism of the present invention.

[0020] Figure 4 This is a cross-sectional view of the grinding mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the fixing mechanism of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged view of part A in the image.

[0023] Figure 7 This is a schematic diagram of the structure of the isolation plate, feeding tray and support frame of the present invention.

[0024] Figure 8 This is a schematic diagram of the arc-shaped shielding frame, belt conveyor assembly, and support frame of the present invention.

[0025] In the attached diagram, the following are the reference numerals: 1: support frame, 2: rotating shaft, 3: feeding tray, 31: receiving groove, 32: sealing gasket, 33: groove, 41: internal gear ring, 42: drive motor, 43: drive gear, 51: servo motor, 52: transmission shaft, 53: mounting bracket, 54: splined shaft one, 55: conical grinding wheel, 56: side plate, 57: sliding plate, 58: adjusting screw, 59: splined shaft two, 61: sliding plate. Block 62: Elastic component one, 63: Pulley, 64: Transmission belt, 71: Locking groove, 72: Locking bolt, 81: Cylinder body, 82: Suction pipe, 83: Connecting frame, 84: Guide frame, 85: Elastic component two, 86: T-shaped rod, 87: Piston plate, 88: Guide slant rod, 9: Isolation plate, 10: Arc-shaped shielding frame, 11: Connecting plate, 12: Belt conveyor group, 100: Tile-shaped neodymium iron boron magnet. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0027] A chamfering device for neodymium iron boron magnets, such as Figures 1-4As shown, the device includes a support frame 1, a rotating shaft 2, a feeding tray 3, a sealing gasket 32, a drive mechanism, and a grinding mechanism. The support frame 1 has two parts, front and rear, with a rotating shaft 2 rotatably connected between the middle of the two support frames 1. The feeding tray 3 is connected in the middle of the rotating shaft 2. The feeding tray 3 has multiple receiving grooves 31 and recesses 33 evenly spaced along its circumference. The receiving grooves 31 and recesses 33 are connected. The recesses 33 are used to hold magnets. A sealing gasket 32 ​​is provided on the recesses 33. A drive mechanism for driving the feeding tray 3 to rotate is provided between the feeding tray 3 and the support frame 1. The support frame 1 is provided with a grinding mechanism for grinding the tile-shaped neodymium iron boron magnet 100.

[0028] like Figure 2 As shown, the drive mechanism includes an internal gear ring 41, a drive motor 42, and a drive gear 43. The internal gear ring 41 is connected inside the feeding tray 3, and the drive motor 42 is mounted on the rear support frame 1. The output shaft of the drive motor 42 is connected to the drive gear 43, and the drive gear 43 meshes with the internal gear ring 41 so that the operation of the drive motor 42 can drive the feeding tray 3 to rotate through the drive gear 43 and the internal gear ring 41.

[0029] like Figures 2-4 As shown, the grinding mechanism includes a servo motor 51, a drive shaft 52, a mounting bracket 53, a spline shaft 54, a conical grinding wheel 55, a second spline shaft 59, an adjustment component, and a transmission component. The servo motor 51 is mounted on the left side of the rear support frame 1. Mounting brackets 53 are slidably connected to the left sides of both support frames 1. A drive shaft 52 is rotatably connected between the two mounting brackets 53. Spline shafts 54 are connected to both the front and rear sides of the drive shaft 52. Spline shafts 59 are mounted on the output shaft of the servo motor 51 and the left side of the front support frame 1. The two spline shafts 59 are located on the same axis. Conical grinding wheels 55 are slidably connected to both spline shafts 54 and spline shafts 59. An adjustment component for adjusting the position of the mounting bracket 53 is provided on the support frame 1. A transmission component is provided between the drive shaft 52 and the support frame 1.

[0030] like Figures 2-4 As shown, the adjustment assembly includes a side plate 56, a sliding plate 57, and an adjusting screw 58. The side plate 56 is connected between the left sides of the two support frames 1. The sliding plate 57 is slidably connected to the side plate 56. The sliding plate 57 is connected to two mounting frames 53 so that when the sliding plate 57 moves, it can drive the two mounting frames 53 to move, thereby adjusting the position of the conical grinding wheel 55. The adjusting screw 58 is rotatably connected to the side plate 56. The adjusting screw 58 is threadedly engaged with the sliding plate 57 so that the rotation of the adjusting screw 58 can drive the sliding plate 57 to move through the thread, thereby adjusting the position of the sliding plate 57.

[0031] like Figures 2-4As shown, the transmission assembly includes a slider 61, an elastic element 62, a pulley 63, and a transmission belt 64. Sliding sliders 61 are slidably connected to the left sides of both support frames 1. Pulleys 63 are connected to the slider 61, the front and rear ends of the transmission shaft 52, and the two front and rear splined shafts 59. The pulleys 63 on the slider 61 rotate and connect to the slider 61. A transmission belt 64 is wound between the three pulleys 63 on the front and rear sides. The pulleys 63 and the transmission belt 64 form a triangle to enable the splined shafts 59 and the transmission shaft 52 to rotate synchronously. An elastic element 62, which is a tension spring, connects the slider 61 to the support frame 1.

[0032] like Figure 5 and Figure 6 As shown, it also includes a fixing mechanism, which includes a cylinder body 81, an air intake pipe 82, a connecting frame 83, a guide frame 84, a guide inclined rod 88, an elastic element 85, a T-shaped rod 86, and a piston plate 87. The feeding tray 3 has cylinder bodies 81 evenly spaced along its circumference in number, matching the number of receiving slots 31. One end of each cylinder body 81 is connected to an air intake pipe 82, which is connected to the receiving slot 31. Connecting frames 83 are connected to both the front and rear sides of the rotating shaft 2. A guide frame 84 is connected to the connecting frame 83. The guide frame 84 is arc-shaped. An inclined guide rod 88 is connected to the upper right side of the guide frame 84. A piston plate 87 is slidably connected inside the cylinder 81. An elastic element 85, which is a return spring, is connected between the piston plate 87 and the cylinder 81. A T-shaped rod 86 is connected to the piston plate 87. The guide frame 84 and the guide rod 88 are both located at the movement trajectory of the T-shaped rod 86.

[0033] When chamfering is required on the tile-shaped NdFeB magnet 100, it can be placed in the groove 33 first (the tile-shaped NdFeB magnet 100 processed in this device is a semi-finished product and has not been magnetized, so it does not have magnetism). Then, the drive motor 42 is controlled to operate, which drives the feeding plate 3 to rotate through the drive gear 43 and the internal gear ring 41, thereby driving the cylinder 81 and the T-shaped rod 86 to rotate. When the T-shaped rod 86 rotates, it will contact the guide inclined rod 88 and be squeezed downward by the guide inclined rod 88, thereby driving the piston plate 87 to move. The elastic element 85 is stretched, and the piston plate 87 moves. During operation, gas is drawn from the receiving groove 31 through the suction pipe 82, creating a negative pressure within the receiving groove 31 and fixing the tile-shaped neodymium iron boron magnet 100. Then, when the T-shaped rod 86 moves to the guide frame 84, the guide frame 84 abuts against the T-shaped rod 86, limiting its movement. As the tile-shaped neodymium iron boron magnet 100 continues to move, the chamfered edges on its front and rear sides contact the two tapered grinding wheels 55 on the front and rear sides, respectively. Previously, the servo motor 51 could be controlled to rotate the drive shaft 52, spline shaft one 54, and spline shaft two 59 via the transmission between the pulley 63 and the transmission belt 64. The conical grinding wheel 55 is rotated, causing it to contact the tile-shaped NdFeB magnet 100 during rotation. This grinding wheel chamfers the front and rear edges of the NdFeB magnet 100. Thus, this device can be used to chamfer the tile-shaped NdFeB magnet 100. Furthermore, the chamfering is performed on the front and rear edges of the NdFeB magnet 100 using a roller-type conveyor system, allowing for simultaneous conveying and chamfering. This enhances the continuity of the operation and enables simultaneous processing of both front and rear sides, resulting in higher efficiency. In actual operation, the adjusting screw 58 can be rotated according to the thickness of the tile-shaped neodymium iron boron magnet 100, thereby driving the sliding plate 57 to move left and right through the thread. When the sliding plate 57 moves, it can drive the mounting bracket 53 and the transmission shaft 52 to move together, thereby adjusting the distance between the tapered grinding wheels 55 on the left and right sides according to the thickness of the tile-shaped neodymium iron boron magnet 100. When the transmission shaft 52 moves, it will drive the pulley 63 on it to move, thereby squeezing the pulley 63 on the slider 61 through the transmission belt 64, driving the slider 61 to move upward, and the elastic element 62 is compressed to ensure that the transmission belt 64 is taut.

[0034] like Figure 4 As shown, it also includes a locking bolt 72. Both the first spline shaft 54 ​​and the second spline shaft 59 are provided with locking grooves 71. The tapered grinding wheel 55 is connected to the locking bolt 72 by a thread. The locking bolt 72 can rotate and move down through the thread to abut against the locking groove 71, thereby fixing the tapered grinding wheel 55.

[0035] When using this device, if it is necessary to adjust the size of the chamfer area, the locking bolt 72 can be removed, and then the conical grinding wheel 55 can be pulled to slide along the spline shaft 1 54 and spline shaft 2 59 to adjust the size of the chamfer. The smaller the distance between the two conical grinding wheels 55, the closer the conical grinding wheel 55 is to the tile-shaped neodymium iron boron magnet 100, and the larger the chamfer area. Conversely, the larger the distance between the two conical grinding wheels 55, the farther the conical grinding wheel 55 is from the tile-shaped neodymium iron boron magnet 100, and the smaller the chamfer area, thus achieving the function of adjusting the size of the chamfer area.

[0036] like Figure 7 As shown, it also includes an isolation plate 9. An isolation plate 9 is provided at the receiving groove 31. The isolation plate 9 is provided with vent holes evenly spaced on it to disperse the attraction force, so that the attraction force is evenly distributed at various positions of the tile-shaped NdFeB magnet 100. This avoids the attraction force from concentrating in one place and attracting the tile-shaped NdFeB magnet 100, which would cause the tile-shaped NdFeB magnet 100 to be subjected to excessive pressure and break.

[0037] like Figure 8 As shown, it also includes an arc-shaped shielding frame 10. The arc-shaped shielding frame 10 is connected between the right sides of the two support frames 1. The arc-shaped shielding frame 10 can cover the receiving groove 31 and the suction pipe 82 to prevent dust from entering the receiving groove 31 and the suction pipe 82.

[0038] like Figure 8 As shown, it also includes connecting plates 11 and belt conveyor groups 12. Two connecting plates 11 are connected to the lower part of each of the two support frames 1. Belt conveyor groups 12 are installed between the four connecting plates 11. The belt conveyor groups 12 are evenly spaced with slag discharge holes. The polished tile-shaped NdFeB magnets 100 will fall onto the belt conveyor groups 12. The belt conveyor groups 12 can transport the tile-shaped NdFeB magnets 100. The debris generated during the polishing process falls onto the belt conveyor groups 12 and is discharged through the slag discharge holes on the belt conveyor groups 12, so as to achieve the effect of processing the polished tile-shaped NdFeB magnets 100.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chamfering device for neodymium iron boron magnets, characterized in that, The device includes a support frame (1), a rotating shaft (2), a feeding tray (3), a sealing gasket (32), a drive mechanism, and a grinding mechanism. The support frame (1) has two sections, front and rear, with a rotating shaft (2) rotatably connected between the two support frames (1). A feeding tray (3) is connected in the middle of the rotating shaft (2). The feeding tray (3) has multiple interconnected receiving slots (31) and grooves (33) evenly spaced along its circumference. A sealing gasket (32) is provided on each groove (33). A drive mechanism for rotating the feeding tray (3) is provided between the feeding tray (3) and the support frame (1). A grinding mechanism for grinding the tile-shaped neodymium iron boron magnet (100) is provided on the support frame (1). The grinding mechanism includes a servo motor (51), a transmission shaft (52), and a mounting bracket (53). 53), Spline shaft 1 (54), conical grinding wheel (55), spline shaft 2 (59), adjustment assembly and transmission assembly, a servo motor (51) is mounted on one of the support frames (1), a mounting frame (53) is slidably connected to both support frames (1), a transmission shaft (52) is rotatably connected between the two mounting frames (53), a spline shaft 1 (54) is connected to both sides of the transmission shaft (52), a spline shaft 2 (59) is mounted on the output shaft of the servo motor (51) and the other support frame (1), a conical grinding wheel (55) is slidably connected to both the spline shaft 1 (54) and the spline shaft 2 (59), an adjustment assembly for adjusting the position of the mounting frame (53) is provided on the support frame (1), and a transmission assembly is provided between the transmission shaft (52) and the support frame (1); The drive mechanism includes an internal gear ring (41), a drive motor (42) and a drive gear (43). The internal gear ring (41) is connected inside the feeding tray (3). The drive motor (42) is installed on one of the support frames (1). The drive gear (43) is connected to the output shaft of the drive motor (42). The drive gear (43) meshes with the internal gear ring (41). It also includes a fixing mechanism, which includes a cylinder (81), an air intake pipe (82), a connecting frame (83), a guide frame (84), a guide slant rod (88), an elastic element (85), a T-shaped rod (86), and a piston plate (87). The feeding tray (3) is evenly spaced around the circumference with a number of cylinders (81) equal to the number of receiving slots (31). One end of the cylinder (81) is connected to the air intake pipe (82), which is connected to the receiving slot (31). Both sides of the rotating shaft (2) are connected to connecting... The connecting frame (83) is connected to a guide frame (84), which is arc-shaped. An inclined guide rod (88) is connected to the guide frame (84). A piston plate (87) is slidably connected inside the cylinder (81). An elastic element (85) is connected between the piston plate (87) and the cylinder (81). A T-shaped rod (86) is connected to the piston plate (87). The guide frame (84) and the guide rod (88) are both located on the movement trajectory of the T-shaped rod (86).

2. The chamfering device for neodymium iron boron magnets as described in claim 1, characterized in that, The adjustment assembly includes a side plate (56), a sliding plate (57), and an adjustment screw (58). The side plate (56) is connected between the two support frames (1). The sliding plate (57) is slidably connected to the side plate (56). The sliding plate (57) is connected to the two mounting frames (53). The adjustment screw (58) is rotatably connected to the side plate (56). The adjustment screw (58) is threadedly engaged with the sliding plate (57).

3. The chamfering device for neodymium iron boron magnets as described in claim 1, characterized in that, The transmission assembly includes a slider (61), an elastic element (62), a pulley (63), and a transmission belt (64). The slider (61) is slidably connected to both support frames (1). The slider (61), the front and rear ends of the transmission shaft (52), and the front and rear spline shafts (59) are all connected to pulleys (63). The pulleys (63) on the slider (61) are rotatably connected to the slider (61). The transmission belt (64) is wound between the three pulleys (63) on the front and rear sides. The pulleys (63) and the transmission belt (64) form a triangle. The elastic element (62) is connected between the slider (61) and the support frame (1).

4. The neodymium iron boron magnet chamfering device as described in claim 1, characterized in that, It also includes a locking bolt (72), and both the first spline shaft (54) and the second spline shaft (59) are provided with locking grooves (71), and the tapered grinding wheel (55) is connected to the locking bolt (72) by thread.

5. The chamfering device for neodymium iron boron magnets as described in claim 1, characterized in that, It also includes a partition plate (9), which is provided at the receiving groove (31), and the partition plate (9) is provided with ventilation holes evenly spaced on it.

6. The chamfering device for neodymium iron boron magnets as described in claim 1, characterized in that, It also includes an arc-shaped shielding frame (10), which is connected between the two support frames (1). The arc-shaped shielding frame (10) can cover the receiving groove (31) and the suction pipe (82).

7. The chamfering device for neodymium iron boron magnets as described in claim 1, characterized in that, It also includes a connecting plate (11) and a belt conveyor group (12). Two connecting plates (11) are connected to the lower part of each of the two support frames (1). A belt conveyor group (12) is installed between the four connecting plates (11). The belt conveyor group (12) is provided with slag discharge holes at even intervals.

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