Grinding equipment for sintered neodymium-iron-boron magnet

Abstract

The invention discloses sintered neodymium-iron-boron magnet grinding machining equipment, and relates to the technical field of neodymium-iron-boron magnet machining, the sintered neodymium-iron-boron magnet grinding machining equipment comprises a machining table, the machining table is provided with a grinding assembly, a clamping assembly, a steering adjusting assembly and a cooling assembly, and the clamping assembly is used for clamping a magnet body; the grinding assembly is used for achieving grinding machining of a magnet body, the steering adjusting assembly is used for achieving rotation of the magnet body and achieving multi-directional machining of the magnet body in a matched mode, and the cooling assembly is used for cooling treatment when the magnet body is machined, so that machining is more stable. A plurality of through grooves are formed in the machining table, and a waste collecting assembly is arranged in the machining table and used for collecting machined waste. The problems that in the prior art, a grinding mechanism is directly driven by a feeding mechanism to conduct grinding, the microstructure of a magnet is easily damaged, and the magnetic performance is reduced are solved.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron magnet processing technology, specifically a grinding processing equipment for sintered neodymium iron boron magnets. Background Technology

[0002] Sintered NdFeB magnets are a type of high-performance permanent magnet material, widely used in motors, generators, sensors and other fields. Grinding equipment is mainly used for the post-processing stage of magnets. The surface of the sintered magnet blank is not smooth and has burrs, so it needs to be ground.

[0003] Chinese utility model patent CN210616115U discloses a grinding equipment for neodymium iron boron rotor magnets, comprising a base, a feeding mechanism, a translation mechanism, a grinding mechanism, and a clamping mechanism. The top of the base houses these mechanisms. The feeding mechanism includes a column, a feeding slide rail, a feeding lead screw pair, a feeding motor, and a feeding slide block. The feeding column is fixedly mounted on the top of the base. A translation mechanism is mounted on the feeding slide block, including a translation platform fixedly connected to the feeding slide block. The translation platform has a first moving mechanism and a second moving mechanism. A clamping mechanism is mounted on the base below the grinding mechanism. Multiple clamping plates are opened using a cylinder to clamp the magnet, resulting in a large and uniform force distribution area, preventing stress concentration and damage during grinding.

[0004] However, existing technologies still have shortcomings:

[0005] 1. The above settings, after clamping the magnet, directly drive the grinding mechanism to perform grinding through the feed mechanism. The high temperature generated during the grinding process can easily damage the microstructure of the magnet, resulting in a decrease in magnetic properties.

[0006] 2. The above structure can only grind one side of the magnet after clamping. When multiple sides of the magnet need to be processed, the position of the magnet needs to be adjusted, which affects the processing efficiency. Summary of the Invention

[0007] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a grinding equipment for sintered NdFeB magnets, which solves the problem that in the prior art, grinding directly by the feed mechanism driving the grinding mechanism can easily cause damage to the microstructure of the magnet, resulting in a decrease in magnetic properties, and is not convenient for multi-faceted processing of the magnet.

[0008] To achieve the above objectives, this invention proposes a grinding equipment for sintered NdFeB magnets, comprising a processing table, on which a grinding assembly, a clamping assembly, a steering adjustment assembly, and a cooling assembly are arranged. The clamping assembly includes a pair of second supports, with a support seat between the pair of second supports. Both the second supports and the support seat are fixedly connected to the processing table. A connecting rod is rotatably mounted on the support seat, with electric grippers fixedly mounted at both ends of the connecting rod. A telescopic rod is fixedly mounted in the middle of the electric grippers, and a limit block is fixedly mounted at the end of the telescopic rod. An electric push rod is fixedly mounted on the second supports, with a bearing fixedly mounted on the output shaft of the electric push rod. A pressure block is fixedly mounted on the outer ring of the bearing. The steering adjustment assembly includes a second motor, which is fixedly mounted on the processing table. A second driving wheel is fixedly connected to the output shaft of the second motor. A second driven wheel is fixedly mounted on the connecting rod, and a second transmission belt is sleeved on the second driven wheel and the second driving wheel.

[0009] As a further aspect of the present invention: the grinding assembly includes a first motor and a grinding wheel. The first motor is fixedly mounted on the processing table. A connecting rod is rotatably mounted on the processing table. A pair of grinding wheels are fixedly mounted on the connecting rod. A first driven wheel is fixedly mounted at the end of the connecting rod. A first driving wheel is fixedly connected to the output shaft of the first motor. A first transmission belt is sleeved on the first driving wheel and the first driven wheel.

[0010] As a further aspect of the present invention: a pair of first supports are fixedly arranged on the processing table, and a rotating bushing is fixedly arranged on the first support, and the connecting rod is fixedly arranged on the inner ring of the rotating bushing.

[0011] As a further aspect of the present invention: the telescopic end of the telescopic rod is fixedly connected to the electric gripper, and the fixed end of the telescopic rod is fixedly connected to the limiting block.

[0012] As a further embodiment of the present invention: a pair of elastic members are symmetrically fixedly arranged inside the limiting block, and a clamping plate is fixedly arranged on the elastic member, and the clamping plate is slidably arranged on the limiting block.

[0013] As a further embodiment of the present invention: the cooling components are provided in pairs, the cooling components include a liquid nitrogen tank, a transmission hose and a nozzle, the liquid nitrogen tank is disposed in the processing table, one end of the transmission hose is fixedly connected to the liquid nitrogen tank and the other end is fixedly connected to the nozzle, and an electric booster pump is fixedly disposed between the liquid nitrogen tank and the transmission hose.

[0014] As a further aspect of the present invention: a pair of brackets are fixedly mounted on the processing table, the nozzle is rotatably mounted on the brackets, and a locking bolt is threaded between the brackets and the nozzle.

[0015] As a further aspect of the present invention: the processing table is provided with several through slots, and a waste collection component is provided inside the processing table.

[0016] As a further embodiment of the present invention: the waste collection assembly includes a pair of guide plates, the guide plates are fixedly installed inside the processing table, one end of the guide plate is fixedly connected to the processing table, and the other end is inverted L-shaped, and a waste collection box is slidably installed below the pair of guide plates.

[0017] As a further embodiment of the present invention: the liquid nitrogen tank is disposed below the guide plate, and the transmission hose passes through the guide plate and is fixedly connected to the nozzle.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting up a clamping assembly and a steering adjustment assembly, one end of the magnet body is placed between a pair of clamping plates to achieve a fixed connection of the magnet body. After clamping one end of the magnet body, the electric push rod is activated to push the pressure block to press the other end of the magnet body, which, together with the grinding wheel, performs grinding on the magnet body. When it is necessary to adjust the grinding position, the electric gripper is activated to release the jaws, and then the electric push rod is activated to push the telescopic rod to extend or retract to the appropriate position. The electric gripper is then activated to clamp the telescopic rod, restoring the limit position of the magnet body. The second motor is activated to drive the second driving wheel to rotate, which, through the transmission of the second transmission belt, drives the second driven wheel to rotate, thereby driving the connecting rod to rotate. When the magnet body is clamped, the rotation of the connecting rod can drive the magnet body to rotate, thus realizing the adjustment of the grinding angle of the magnet body and enabling multi-faceted grinding of the magnet.

[0020] 2. By setting up a cooling component and starting the electric booster pump, liquid nitrogen in the liquid nitrogen tank is drawn out and sprayed out through the transmission hose and nozzle to cool the grinding wheel during operation; this can prevent the high temperature during grinding from causing a decrease in the performance of the magnet. Attached Figure Description

[0021] Figure 1 The three-dimensional structure of the present invention Figure 1 ;

[0022] Figure 2 The three-dimensional structure of the present invention Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the steering adjustment component of the present invention;

[0024] Figure 4 For the present invention Figure 2 Enlarged view of point A;

[0025] Figure 5This is a schematic diagram of the clamping structure of the clamping component of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the present invention.

[0027] In the diagram: 1. Machining table; 2. Through groove; 3. First motor; 4. First driving wheel; 5. First driven wheel; 6. First transmission belt; 7. Connecting rod; 8. First support; 9. Rotating bushing; 10. Grinding wheel; 11. Guide plate; 12. Liquid nitrogen tank; 13. Electric booster pump; 14. Transmission hose; 15. Waste collection box; 16. Second support; 17. Bracket; 18. Electric push rod; 19. Bearing; 20. Pressure block; 21. Support seat; 22. Linkage rod; 23. Electric gripper; 24. Telescopic rod; 25. Limiting block; 26. Clamping plate; 27. Elastic element; 28. Nozzle; 29. ​​Locking bolt; 30. Second motor; 31. Second driving wheel; 32. Second driven wheel; 33. Second transmission belt; 34. Magnet body. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figure 1-6 As shown, a sintered NdFeB magnet grinding processing equipment includes a processing table 1. The processing table 1 is equipped with a grinding component, a clamping component, a steering adjustment component, and a cooling component. The clamping component is used to clamp the magnet body 34, the grinding component is used to perform grinding processing on the magnet body 34, the steering adjustment component is used to rotate the magnet body 34 to achieve multi-directional processing of the magnet body 34, and the cooling component is used to cool the magnet body 34 during processing to make the processing more stable. The processing table 1 has several through slots 2, and a waste collection component is installed inside the processing table 1 to collect the waste after processing.

[0030] As one embodiment of this invention, the grinding assembly includes a first motor 3 and a grinding wheel 10. The first motor 3 is fixedly mounted on a processing table 1. A connecting rod 7 is rotatably mounted on the processing table 1. A pair of grinding wheels 10 are fixedly mounted on the connecting rod 7. A first driven wheel 5 is fixedly mounted at the end of the connecting rod 7. A first driving wheel 4 is fixedly connected to the output shaft of the first motor 3. A first transmission belt 6 is sleeved on the first driving wheel 4 and the first driven wheel 5. Specifically, a pair of first supports 8 are fixedly mounted on the processing table 1. A rotating bushing 9 is fixedly mounted on the first support 8. The connecting rod 7 is fixedly mounted on the inner ring of the rotating bushing 9. When the first motor 3 is started, the first driving wheel 4 is driven to rotate. Through the transmission of the first transmission belt 6, the first driven wheel 5 is driven to rotate. Thus, the pair of grinding wheels 10 are driven to rotate through the connecting rod 7, thereby realizing the grinding of the magnet body 34.

[0031] In one embodiment of this invention, the clamping assembly includes a pair of second supports 16, with a support base 21 disposed between the pair of second supports 16. Both the second supports 16 and the support base 21 are fixedly connected to the processing table 1. A connecting rod 22 is rotatably mounted on the support base 21, and electric grippers 23 are fixedly mounted at both ends of the connecting rod 22. A telescopic rod 24 is fixedly mounted in the middle of the electric gripper 23, and a limit block 25 is fixedly mounted at the end of the telescopic rod 24. Specifically, the telescopic end of the telescopic rod 24 is fixedly connected to the electric gripper 23, and the fixed end of the telescopic rod 24 is fixedly connected to the limit block 25. A pair of elastic elements 27 are symmetrically fixedly mounted inside the limit block 25, and clamping plates 26 are fixedly mounted on the elastic elements 27. The clamping plates 26 are slidably mounted on the limit block 25. One end of the magnet body 34 is placed between a pair of clamping plates 26 to achieve a fixed connection of the magnet body 34. An electric push rod 18 is fixedly installed on the second support 16. A bearing 19 is fixedly installed on the output shaft of the electric push rod 18. A pressure block 20 is fixedly installed on the outer ring of the bearing 19. After clamping one end of the magnet body 34, the electric push rod 18 is activated to push the pressure block 20 to press the other end of the magnet body 34. The grinding wheel 10 is used to perform grinding on the magnet body 34. When it is necessary to adjust the grinding position, the electric gripper 23 is activated to release the gripper teeth. Then the electric push rod 18 is activated to push the telescopic rod 24 to extend and retract. When it reaches the appropriate position, the electric gripper 23 is activated to clamp the telescopic rod 24 to re-limit the magnet body 34.

[0032] In one embodiment of this invention, the steering adjustment assembly includes a second motor 30, which is fixedly mounted on the processing table 1. The output shaft of the second motor 30 is fixedly connected to a second driving wheel 31, and a second driven wheel 32 is fixedly mounted on the connecting rod 22. A second transmission belt 33 is sleeved on the second driven wheel 32 and the second driving wheel 31. When the second motor 30 is started, the second driving wheel 31 is driven to rotate. Through the transmission of the second transmission belt 33, the second driven wheel 32 is driven to rotate, thereby driving the connecting rod 22 to rotate. When the magnet body 34 is clamped, the rotation of the connecting rod 22 can drive the electric gripper 23, the magnet body 34, and the outer ring of the bearing 19 to rotate, thereby realizing the adjustment of the grinding angle of the magnet body 34.

[0033] As one embodiment of this invention, a pair of cooling components are provided, each corresponding to a grinding wheel 10. The cooling components include a liquid nitrogen tank 12, a transmission hose 14, and a nozzle 28. The liquid nitrogen tank 12 is located inside the processing table 1. One end of the transmission hose 14 is fixedly connected to the liquid nitrogen tank 12, and the other end is fixedly connected to the nozzle 28. An electric booster pump 13 is fixedly installed between the liquid nitrogen tank 12 and the transmission hose 14. A pair of brackets 17 are fixedly installed on the processing table 1. The nozzle 28 is rotatably mounted on the brackets 17. A locking bolt 29 is threaded between the brackets 17 and the nozzle 28. Tightening the locking bolt 29 achieves a fixed connection of the nozzle 28. The position of the nozzle 28 corresponds to the grinding wheel 10. When the electric booster pump 13 is started, liquid nitrogen in the liquid nitrogen tank 12 is drawn out and sprayed out through the transmission hose 14 and the nozzle 28 to achieve cooling treatment of the grinding wheel 10 during operation.

[0034] As one embodiment of this invention, a pair of guide plates 11 are fixedly installed inside the processing table 1. One end of the guide plate 11 is fixedly connected to the processing table 1, and the other end is inverted L-shaped. A waste collection box 15 is slidably installed below the pair of guide plates 11. The waste collection box 15 is used to collect the processed debris. The guide plates 11 are inclined to facilitate the debris to slide into the waste collection box 15. The liquid nitrogen tank 12 is installed below the guide plates 11. The transmission hose 14 passes through the guide plates 11 and is fixedly connected to the nozzle 28.

[0035] Working principle:

[0036] One end of the magnet body 34 is placed between a pair of clamping plates 26 to achieve a fixed connection of the magnet body 34. After clamping one end of the magnet body 34, the electric push rod 18 is activated to push the pressure block 20 to press the other end of the magnet body 34. This, combined with the grinding wheel 10, enables the grinding of the magnet body 34. When the grinding position needs to be adjusted, the electric gripper 23 is activated to release the jaws. Then, the electric push rod 18 is activated to push the telescopic rod 24 to extend or retract to the appropriate position. The electric gripper 23 is then activated to clamp the telescopic rod 24, thus re-limiting the magnet body 34. The first motor 3 is activated to drive the first driving wheel 4 to rotate. Through the transmission of the first transmission belt 6, the first driven wheel 4 is driven to rotate. The rotation of wheel 5 drives a pair of grinding wheels 10 to rotate via connecting rod 7, thereby achieving grinding of the magnet body 34. The second motor 30 is started, driving the second driving wheel 31 to rotate. Through the transmission of the second transmission belt 33, the second driven wheel 32 is driven to rotate, thereby driving the connecting rod 22 to rotate. When the magnet body 34 is clamped, the rotation of the connecting rod 22 can drive the electric gripper 23, the magnet body 34 and the outer ring of the bearing 19 to rotate, thereby achieving adjustment of the grinding angle of the magnet body 34. During processing, the electric booster pump 13 is started to draw liquid nitrogen from the liquid nitrogen tank 12 and spray it out through the transmission hose 14 and nozzle 28 to achieve cooling treatment of the magnet body 34 during processing.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A grinding and processing equipment for sintered NdFeB magnets, characterized in that, The system includes a processing table (1), on which a grinding assembly, a clamping assembly, a steering adjustment assembly, and a cooling assembly are provided. The clamping assembly includes a pair of second supports (16), and a support base (21) is provided between the pair of second supports (16). Both the second supports (16) and the support base (21) are fixedly connected to the processing table (1). A connecting rod (22) is rotatably provided on the support base (21). Electric grippers (23) are fixedly provided at both ends of the connecting rod (22). A telescopic rod (24) is fixedly provided in the middle of the electric grippers (23), and a limiting device is fixedly provided at the end of the telescopic rod (24). The position block (25) is fixedly provided with an electric push rod (18) on the second support (16). The output shaft of the electric push rod (18) is fixedly provided with a bearing (19). The outer ring of the bearing (19) is fixedly provided with a pressure block (20). The steering adjustment assembly includes a second motor (30). The second motor (30) is fixedly provided on the processing table (1). The output shaft of the second motor (30) is fixedly connected to a second driving wheel (31). The connecting rod (22) is fixedly provided with a second driven wheel (32). The second driven wheel (32) and the second driving wheel (31) are sleeved with a second transmission belt (33).

2. The grinding equipment for sintered NdFeB magnets according to claim 1, characterized in that, The grinding assembly includes a first motor (3) and a grinding wheel (10). The first motor (3) is fixedly mounted on the processing table (1). A connecting rod (7) is rotatably mounted on the processing table (1). A pair of grinding wheels (10) are fixedly mounted on the connecting rod (7). A first driven wheel (5) is fixedly mounted at the end of the connecting rod (7). A first driving wheel (4) is fixedly connected to the output shaft of the first motor (3). A first transmission belt (6) is sleeved on the first driving wheel (4) and the first driven wheel (5).

3. The grinding equipment for sintered NdFeB magnets according to claim 2, characterized in that, A pair of first supports (8) are fixedly installed on the processing table (1), and a rotating bushing (9) is fixedly installed on the first support (8). The connecting rod (7) is fixedly installed on the inner ring of the rotating bushing (9).

4. The grinding equipment for sintered NdFeB magnets according to claim 1, characterized in that, The telescopic end of the telescopic rod (24) is fixedly connected to the electric gripper (23), and the fixed end of the telescopic rod (24) is fixedly connected to the limiting block (25).

5. The grinding equipment for sintered NdFeB magnets according to claim 1, characterized in that, A pair of elastic elements (27) are symmetrically fixed inside the limiting block (25), and a clamping plate (26) is fixedly installed on the elastic element (27). The clamping plate (26) is slidably installed on the limiting block (25).

6. The grinding equipment for sintered NdFeB magnets according to claim 1, characterized in that, The cooling components are provided in pairs. The cooling components include a liquid nitrogen tank (12), a transmission hose (14), and a nozzle (28). The liquid nitrogen tank (12) is located inside the processing table (1). One end of the transmission hose (14) is fixedly connected to the liquid nitrogen tank (12), and the other end is fixedly connected to the nozzle (28). An electric booster pump (13) is fixedly installed between the liquid nitrogen tank (12) and the transmission hose (14).

7. The grinding equipment for sintered NdFeB magnets according to claim 6, characterized in that, A pair of brackets (17) are fixedly installed on the processing table (1), and the nozzle (28) is rotatably mounted on the brackets (17). A locking bolt (29) is threaded between the brackets (17) and the nozzle (28).

8. The grinding equipment for sintered NdFeB magnets according to claim 6, characterized in that, The processing table (1) is provided with several through slots (2), and a waste collection component is provided inside the processing table (1).

9. The grinding equipment for sintered NdFeB magnets according to claim 8, characterized in that, The waste collection assembly includes a pair of guide plates (11), which are fixedly installed inside the processing table (1). One end of the guide plate (11) is fixedly connected to the processing table (1), and the other end is in the shape of an inverted L. A waste collection box (15) is slidably installed below the pair of guide plates (11).

10. A grinding and processing equipment for sintered NdFeB magnets according to claim 9, characterized in that, The liquid nitrogen tank (12) is located below the guide plate (11), and the transmission hose (14) passes through the guide plate (11) and is fixedly connected to the nozzle (28).

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