Batch chamfering device for neodymium-iron-boron magnet machining

Abstract

The invention discloses a batch chamfering device for neodymium-iron-boron magnet machining, which is used for chamfering upper and lower arc edges of the inner side and the outer side of a tile-shaped magnet, and comprises a turnover turntable, and the turnover turntable is provided with a plurality of jigs arranged around the axial direction of the turnover turntable; a feeding station, a first grinding station, a second grinding station, an adjusting station, a third grinding station, a fourth grinding station and a discharging station are sequentially arranged in the rotating direction of the turnover rotating disc. The jigs are used for being movably connected with a plurality of tile-shaped magnets in an inserted mode in a vertical state. The first ejector block, the first pressing block, the second ejector block and the second pressing block form a stepped supporting table. By means of the stepped supporting table, it is ensured that the arc edges of the tile-shaped magnet can be in accurate contact with the frosted layer and chamfered in the chamfering process, and the frosted layer and the arc edges are further kept in a tight and complete abutting state along with expansion of the air bag.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB magnet processing equipment, and in particular to a batch chamfering device for processing NdFeB magnets. Background Art

[0002] NdFeB magnets have cylindrical, rectangular, annular and tile shapes. The tile shape is similar to building tiles, also known as arc or fan-shaped NdFeB magnets. The tile-shaped NdFeB magnet has upper and lower arc edges on the inside and outside and vertical edges. The upper and lower arc edges are the junctions between the two horizontal end faces and the side faces of the magnet, and these edges usually need to be chamfered. In order to make the upper and lower arc edges of the tile-shaped NdFeB magnet smoother, the tile-shaped NdFeB magnet is generally polished by a chamfering device. The current chamfering device mainly performs contact grinding of the magnet by a high-speed rotating grinding wheel or abrasive belt to achieve the chamfering effect. However, the tile-shaped NdFeB magnet is irregular, and the common positioning mechanism cannot fix the tile-shaped NdFeB magnet more conveniently. And the fixed position of the tile-shaped NdFeB magnet cannot be automatically adjusted according to the position that needs to be polished.

[0003] At present, a Chinese invention patent application (publication number CN113894702A) discloses a tile-shaped positioning mechanism for grinding neodymium iron boron magnetic steel, including a positioning block, a tile-shaped vertical fixing groove is provided on the upper surface of the positioning block, a fixed slider is movably installed inside the tile-shaped vertical fixing groove, a plurality of pulley mounting grooves are provided on the outer surfaces at both ends of the fixed slider, power pulleys are movably installed inside two of the pulley mounting grooves, an anti-slip rubber pad is fixedly installed on the outer surface of the power pulley, a displacement gear mounting groove is provided inside the tile-shaped vertical fixing groove, a displacement gear is movably installed inside the displacement gear mounting groove, a semicircular transverse fixing column is fixedly installed on the upper surface of the fixed slider, a transverse mounting groove is provided on the outer surface of the semicircular transverse fixing column and near the edge of the outer surface at both ends, a transverse fixing wheel is movably installed inside the transverse mounting groove, a fixed semicircular ring is provided above the semicircular transverse fixing column, and a grinding wheel is provided above the semicircular transverse fixing column.

[0004] According to the above-mentioned prior art, the above-mentioned prior art places the tile-shaped NdFeB magnet that needs to be polished inside the tile-shaped vertical fixed groove on one side by cooperating with the fixed slider and the fixed semicircular ring. The relatively fixed tile-shaped NdFeB magnet is driven to move up and down by cooperating with the power pulley and the transverse fixed pulley, and the tile-shaped NdFeB magnet is polished using a grinding wheel. However, the above-mentioned prior art is used to fix a single tile-shaped NdFeB magnet in a specific position, and it is impossible to process multiple tile-shaped NdFeB magnets at one time, which reduces the efficiency of batch processing. Therefore, there is a need for a batch chamfering device that can simultaneously chamfer the upper and lower arc edges of multiple tile-shaped NdFeB magnets at one time. Summary of the invention

[0005] In view of the problems existing in the prior art, a batch chamfering device for processing NdFeB magnets is provided. The present invention ensures that the arc edges of the tile-shaped magnets can be accurately contacted and chamfered by the frosted layer during the chamfering process through a stepped support platform. As the airbag expands, the frosted layer and the arc edges are further maintained in a tight and complete contact state, ensuring accurate and consistent chamfering effects.

[0006] In order to solve the problems of the prior art, the present invention provides a batch chamfering device for processing NdFeB magnets, which is used for chamfering the upper and lower arc edges of the inner and outer sides of tile-shaped magnets, including a revolving turntable, the revolving turntable is provided with a plurality of jigs arranged around its axial direction, and a loading station, a first grinding station, a second grinding station, an adjustment station, a third grinding station, a fourth grinding station and an unloading station are sequentially arranged around the rotation direction of the revolving turntable, the jig is used to movably plug a plurality of tile-shaped magnets in a vertical state, and also includes a first top block, a first pressure block, a second top block and a second pressure block formed with a stepped support platform, the support platforms on the first top block and the second pressure block are gradually increased step by step along the radial direction of the revolving turntable, and the support platforms on the first pressure block and the second top block are gradually lowered step by step along the radial direction of the revolving turntable, and also includes a first top block, a first pressure block, a second top block and a second pressure block formed with a stepped support platform A grinding mechanism for synchronously grinding all tile-shaped magnets on a jig, a first grinding station is provided with the first pressing block located directly above the jig and the grinding mechanism for grinding the inner arc edges of the lower ends of all tile-shaped magnets in the jig, a second grinding station is provided with the first top block located directly below the jig and the grinding mechanism for grinding the outer arc edges of the upper ends of all tile-shaped magnets in the jig, a third grinding station is provided with the second top block located directly below the jig and the grinding mechanism for grinding the inner arc edges of the upper ends of all tile-shaped magnets in the jig, and a fourth grinding station is provided with the second pressing block located directly above the jig and the grinding mechanism for grinding the outer arc edges of the lower ends of all tile-shaped magnets in the jig.

[0007] Preferably, the adjustment station is provided with the second pressure block located directly above the jig, the second top block located directly below the jig, and a linear drive for driving the second pressure block and the second top block to move toward the jig simultaneously, the loading station is provided with the first top block located directly below the jig, and the unloading station is provided with a pressing device located directly above the jig.

[0008] Preferably, the grinding mechanism includes a sanding disc and a rotary drive for driving the sanding disc to rotate horizontally and a lifting drive for driving the sanding disc to move vertically.

[0009] Preferably, the sand tray is composed of a conical rotating frame and a frosted layer arranged on the conical rotating frame. When the conical rotating frame is driven by the lifting drive to cause the frosted layer to apply pressure to all tile-shaped magnets in the fixture, the frosted layer and the corresponding arc edges of the tile-shaped magnets are in a state of conflict.

[0010] Preferably, the conical rotating frame located at the first grinding station is a right cone and the frosted layer is on the outer cone surface of the conical rotating frame, the conical rotating frame located at the second grinding station is a right cone and the frosted layer is on the inner cone surface of the conical rotating frame, the conical rotating frame located at the third grinding station is an inverted cone and the frosted layer is on the outer cone surface of the conical rotating frame, and the conical rotating frame located at the fourth grinding station is an inverted cone and the frosted layer is on the inner cone surface of the conical rotating frame.

[0011] Preferably, a flexible pressure structure is provided between the frosted layer and the conical rotating frame to assist the frosted layer in completely resisting the arc edge of the tile-shaped magnet.

[0012] Preferably, the flexible pressure structure has an airbag arranged on a conical rotating frame, and a frosted layer is attached to the outer surface of the airbag. A pressurized chamber is formed between the airbag and the conical rotating frame. When the pressurized chamber is pressurized, the airbag is in an expanded state, so that the frosted layer is in close contact with the arc edges of the tile-shaped magnet.

[0013] Preferably, a rotating shaft drivingly connected to the rotating driver is provided on the conical rotating frame, the rotating shaft has a pipeline communicating with an external air source, and the conical rotating frame has an air passage communicating with the pipeline and the pressurized chamber.

[0014] Preferably, the conical rotating frame has an interlayer connected to the pipeline, and a plurality of air holes connected to the interlayer and the pressurized chamber are provided on the conical rotating frame along its circumferential direction, and the air holes and the interlayer together form the air channel.

[0015] Preferably, the fixture is provided with an elastic slot for automatically generating clamping force after insertion of multiple tile-shaped magnets. The elastic slot is located at one end where the tile-shaped magnet is inserted from top to bottom and has a guiding edge for helping the tile-shaped magnet to be smoothly inserted into the elastic slot in a vertical state.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention ensures the stable arrangement of the tile-shaped magnets in the first grinding station, the second grinding station, the third grinding station and the fourth grinding station through the stepped support platform at the position where each jig stops, so that the arc edge of each tile-shaped magnet can be accurately contacted and chamfered by the grinding mechanism. The processing efficiency is improved by synchronously chamfering each arc edge of multiple tile-shaped magnets at each grinding station.

[0017] In the process of synchronously chamfering the arc edges on the inner side of the lower end and the outer side of the upper end of all the tile-shaped magnets in the fixture at the first grinding station and the second grinding station respectively, the first pressing block and the first top block provide support for the tile-shaped magnets to ensure the stability of the chamfering process.

[0018] As the adjustment station adjusts the positions of all tile-shaped magnets in the fixture, the third grinding station and the fourth grinding station continue to synchronously chamfer the arc edges of the upper inner side and the lower outer side of all tile-shaped magnets in the fixture. The second pressing block and the second top block provide support for the tile-shaped magnet, further ensuring the stability of the chamfering process.

[0019] 2. The present invention uses the taper of the frosted layer to enable the frosted layer to fit closely to the arc edges of all tile-shaped magnets in the fixture. As the frosted layer rotates, the arc edges of the tile-shaped magnets always keep in contact with the frosted layer, ensuring that each arc edge is chamfered evenly and consistently.

[0020] In the process of polishing the arc edges of the tile-shaped magnets, the first pressure block, the first top block, the second pressure block and the second top block provide firm support for all the tile-shaped magnets in the fixture at the corresponding polishing stations, thereby ensuring the stability of the polishing process, achieving high-precision and high-quality chamfering effects, and significantly improving the overall quality and consistency of the product.

[0021] 3. The present invention uses the expansion characteristics of the airbag to enable the frosted layer to fit closely to the arc edge of the tile-shaped magnet, so that the frosted layer and the arc edge of the tile-shaped magnet maintain a tight and complete conflicting state. It ensures that the arc edge of each tile-shaped magnet can be accurately and consistently chamfered, thereby improving the accuracy and quality of the chamfering.

[0022] During the entire chamfering process, the airbag automatically adjusts the expansion degree according to the position of each tile-shaped magnet in the fixture to ensure that the frosted layer and the arc edge of each tile-shaped magnet maintain the best contact state, avoiding local overpressure or underpressure and improving the chamfering integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a neodymium iron boron magnet.

[0024] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a batch chamfering device for processing NdFeB magnets.

[0025] Figure 3 The present invention is a top view of a batch chamfering device for processing NdFeB magnets.

[0026] Figure 4The present invention is a schematic diagram of the three-dimensional structure of a rotary turntable and a fixture of a batch chamfering device for processing NdFeB magnets.

[0027] Figure 5 The invention discloses a stereoscopic structural diagram of a jig and a first top block at a loading station of a batch chamfering device for processing NdFeB magnets.

[0028] Figure 6 The present invention is a partial three-dimensional structural cross-sectional view of a second top block and a second pressing block at an adjustment station of a batch chamfering device for processing NdFeB magnets.

[0029] Figure 7 The present invention is a schematic diagram of the adjustment state of all tile-shaped magnets in a jig from gradually increasing to gradually decreasing at an adjustment station of a batch chamfering device for processing NdFeB magnets.

[0030] Figure 8 It is a partial three-dimensional structural cross-sectional view of a grinding mechanism and a first pressing block at a first grinding station of a batch chamfering device for processing NdFeB magnets of the present invention.

[0031] Fig. 9 It is a partial three-dimensional structural cross-sectional view of a grinding mechanism and a first top block at a second grinding station of a batch chamfering device for processing NdFeB magnets of the present invention.

[0032] Fig.10 It is a partial three-dimensional structural cross-sectional view of a grinding mechanism and a second top block at a third grinding station of a batch chamfering device for processing NdFeB magnets of the present invention.

[0033] Fig.11 It is a partial three-dimensional structural cross-sectional view of a grinding mechanism and a second pressing block at a fourth grinding station of a batch chamfering device for processing NdFeB magnets of the present invention.

[0034] Fig.12 yes Figure 8 An enlarged schematic diagram of point A.

[0035] Fig.13 yes Figure 4 An enlarged schematic diagram of point B.

[0036] The numbers in the figure are: 1, tile-shaped magnet; 11, arc edge; 2, turntable; 21, loading station; 22, first grinding station; 23, second grinding station; 24, adjustment station; 25, third grinding station; 26, fourth grinding station; 27, unloading station; 3, fixture; 31, first top block; 311, support table; 32, first pressure block; 33, second top block; 34, second pressure block; 35, elastic slot; 351, guide edge; 4, grinding mechanism; 41, sanding disc; 411, conical rotating frame; 4111, interlayer; 4112, air hole; 412, frosted layer; 5, air bag; 51, pressurized chamber; 52, rotating shaft; 521, pipeline. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] See also Figure 1-Figure 11 As shown, a batch chamfering device for processing NdFeB magnets is used to chamfer the upper and lower arc edges 11 on the inner and outer sides of tile-shaped magnets 1, including a turntable 2, the turntable 2 is provided with a plurality of jigs 3 arranged around its axial direction, and a loading station 21, a first grinding station 22, a second grinding station 23, an adjustment station 24, a third grinding station 25, a fourth grinding station 26 and a discharge station 27 are sequentially arranged around the rotation direction of the turntable 2. The fixture 3 is used to flexibly insert a plurality of tile-shaped magnets 1 in a vertical state, and also includes a first top block 31, a first pressing block 32, a second top block 33 and a second pressing block 34 formed with a stepped support platform 311. The support platforms 311 on the first top block 31 and the second pressing block 34 gradually increase step by step along the radial direction of the revolving turntable 2, and the support platforms 311 on the first pressing block 32 and the second top block 33 gradually decrease step by step along the radial direction of the revolving turntable 2. The first grinding station 22 is provided with the first pressing block 32 located directly above the jig 3 and the grinding mechanism 4 for grinding the inner arc edges 11 of the lower ends of all the tile-shaped magnets 1 in the jig 3; the second grinding station 23 is provided with the first top block 31 located directly below the jig 3 and the grinding mechanism 4 for grinding the outer arc edges 11 of the upper ends of all the tile-shaped magnets 1 in the jig 3; the third grinding station 25 is provided with the second top block 33 located directly below the jig 3 and the grinding mechanism 4 for grinding the inner arc edges 11 of the upper ends of all the tile-shaped magnets 1 in the jig 3; the fourth grinding station 26 is provided with the second pressing block 34 located directly above the jig 3 and the grinding mechanism 4 for grinding the outer arc edges 11 of the lower ends of all the tile-shaped magnets 1 in the jig 3.

[0039] Each step surface of the support platform 311 of the first top block 31 is used to contact the lower end of a tile-shaped magnet 1 in the fixture 3 from bottom to top.

[0040] Each step surface of the support platform 311 of the first pressing block 32 is used to contact the upper end of a tile-shaped magnet 1 in the fixture 3 from top to bottom.

[0041] Each step surface of the support platform 311 of the second top block 33 is used to contact the lower end of a tile-shaped magnet 1 in the fixture 3 from bottom to top.

[0042] Each step surface of the support platform 311 of the second pressing block 34 is used to contact the upper end of a tile-shaped magnet 1 in the fixture 3 from top to bottom.

[0043] The linear drive and the pressing device are not shown in the figure.

[0044] When the jig 3 is placed on the turntable 2, the first place it reaches is the loading station 21. A plurality of tile-shaped magnets 1 are movably inserted on the jig 3, and the inner side of one of the adjacent tile-shaped magnets 1 on the jig 3 is directly opposite to the outer side of another. This makes it easy for the grinding mechanisms 4 at the first grinding station 22 and the second grinding station 23 to perform synchronous chamfering processing on the inner circular arc edges 11 of the lower ends and the outer circular arc edges 11 of the upper ends of all the tile-shaped magnets 1 in the jig 3.

[0045] When the turntable 2 stops rotating, one of the jigs 3 stays at each of the seven workstations.

[0046] When the jig 3 reaches the first grinding station 22, since the jig 3 is provided with a first pressing block 32 and has a stepped support platform 311, during the start-up process of the grinding mechanism 4, the grinding mechanism 4 contacts the lower ends of all tile-shaped magnets 1 in the jig 3, and grinds the inner arc edges 11 of the lower ends of all tile-shaped magnets 1 in the jig 3. In this process, the first pressing block 32 provides support for the tile-shaped magnet 1, ensuring that the magnet does not move during the grinding process, thereby ensuring the uniformity and consistency of the chamfering effect of all tile-shaped magnets 1 in the jig 3.

[0047] As the turntable 2 continues to rotate, the jig 3 enters the second grinding station 23. The first top block 31 at the second grinding station 23 supports all tile-shaped magnets 1 in the jig 3 from below, and the grinding mechanism 4 starts to grind the outer arc edges 11 of the upper ends of all tile-shaped magnets 1 in the jig 3.

[0048] As the turntable 2 continues to rotate, the jig 3 enters the adjustment station 24. The positions of all tile-shaped magnets 1 in the jig 3 are adjusted to ensure that the positions of each tile-shaped magnet 1 in the third grinding station 25 and the fourth grinding station 26 are accurate, avoiding the problem of uneven grinding of the arc edge 11 due to position deviation. The upper inner arc edge 11 and the lower outer arc edge 11 of all tile-shaped magnets 1 in the jig 3 are convenient for the grinding mechanism 4 at the third grinding station 25 and the fourth grinding station 26 to perform synchronous chamfering.

[0049] As the turntable 2 continues to rotate, the jig 3 arrives at the third grinding station 25. The second top block 33 at the third grinding station 25 supports all tile-shaped magnets 1 in the jig 3 from below. At this time, the grinding mechanism 4 starts to grind the inner arc edges 11 of the upper ends of all tile-shaped magnets 1 in the jig 3.

[0050] As the turntable 2 continues to rotate, the jig 3 enters the fourth grinding station 26. The second pressing block 34 at the fourth grinding station 26 contacts all the tile-shaped magnets 1 in the jig 3 from above. The grinding mechanism 4 grinds the outer arc edges 11 of the lower ends of all the tile-shaped magnets 1 in the jig 3.

[0051] After all the grinding processes are completed, the jig 3 arrives at the unloading station 27. All the inner and outer upper and lower arc edges 11 of the tile-shaped magnets 1 are fully chamfered to ensure the smoothness and consistency of each edge. Finally, the tile-shaped magnets 1 are sent out of the jig 3 through the unloading station 27.

[0052] See also Figure 1-Figure 11 As shown, the adjustment station 24 is provided with a second pressure block 34 located directly above the jig 3, the second top block 33 located directly below the jig 3, and a linear drive for driving the second pressure block 34 and the second top block 33 to move toward the jig 3 simultaneously; the loading station 21 is provided with the first top block 31 located directly below the jig 3; and the unloading station 27 is provided with a pressing device located directly above the jig 3.

[0053] When the tile-shaped magnet 1 is inserted, since the first top block 31 is located directly below the jig 3 and the first top block 31 has a stepped support platform 311, after the tile-shaped magnet 1 is inserted into the jig 3, all the tile-shaped magnets 1 in the jig 3 are arranged in a stepped manner, which is convenient for the first grinding station 22 and the second grinding station 23 to chamfer the inner arc edge 11 of the lower end and the outer arc edge 11 of the upper end of the tile-shaped magnet 1.

[0054] When the adjustment station 24 adjusts the positions of all the tile-shaped magnets 1 on the fixture 3 , the second pressing block 34 and the second lifting block 33 are driven by the linear drive, so that the second pressing block 34 and the second lifting block 33 move toward the fixture 3 at the same time.

[0055] When the tile-shaped magnet 1 has completed the chamfering process, the final pressing device presses the tile-shaped magnet 1 downward from the fixture 3 and conveys it to the next processing link through the conveyor belt.

[0056] See also Figure 2 and Figure 8-Figure 11 As shown, the grinding mechanism 4 includes a sanding disc 41 and a rotary drive for driving the sanding disc 41 to rotate horizontally and a lifting drive for driving the sanding disc 41 to move vertically.

[0057] The rotary drive and lifting drive are not shown in the figures.

[0058] The sand tray 41 is a conical structure that can accommodate all tile-shaped magnets 1 in the fixture 3 .

[0059] When the grinding mechanism 4 is started, the rotary driver drives the sand disc 41 to rotate horizontally while the lifting driver keeps the sand disc 41 in close contact with all the tile-shaped magnets 1 in the fixture 3 .

[0060] The conical structure of the sand tray 41 ensures that it can evenly fit the arc edges 11 of all the tile-shaped magnets 1 arranged in a stepped manner in the fixture 3, and perform synchronous and precise chamfering, ensuring that the arc edges 11 of each tile-shaped magnet 1 are evenly and consistently chamfered.

[0061] As the jig 3 passes through the first grinding station 22, the second grinding station 23, the third grinding station 25 and the fourth grinding station 26 in sequence, the inner and outer upper and lower arc edges 11 of all the tile-shaped magnets 1 in the jig 3 are fully, smoothly and neatly chamfered, thereby improving the processing effect and efficiency.

[0062] See also Figure 7-Figure 12 As shown, the sand tray 41 is composed of a conical rotating frame 411 and a frosted layer 412 arranged on the conical rotating frame 411. When the conical rotating frame 411 is driven by the lifting drive to cause the frosted layer 412 to apply pressure to all the tile-shaped magnets 1 in the fixture 3, the frosted layer 412 is in a state of conflict with the corresponding arc edges 11 of the tile-shaped magnets 1.

[0063] When the lifting driver drives the conical rotating frame 411 to move up and down, the frosted layer 412 is in close contact with the corresponding arc edges 11 of all tile-shaped magnets 1 in the fixture 3. The frosted layer 412 uniformly presses and polishes the arc edges 11 of the tile-shaped magnets 1 by rotating the conical rotating frame 411 horizontally through the rotating driver.

[0064] During the process of grinding the arc edge 11 of the tile-shaped magnet 1, the first pressing block 32, the first top block 31, the second pressing block 34 and the second top block 33 provide stable support for the tile-shaped magnet 1 at the corresponding grinding stations, ensuring that the tile-shaped magnet 1 does not move during chamfering. Finally, the arc edge 11 of each tile-shaped magnet 1 can be chamfered accurately and consistently.

[0065] See also Figure 7-Figure 12 As shown, the conical rotating frame 411 located at the first grinding station 22 is a right cone and the frosted layer 412 is on the outer cone surface of the conical rotating frame 411, the conical rotating frame 411 located at the second grinding station 23 is a right cone and the frosted layer 412 is on the inner cone surface of the conical rotating frame 411, the conical rotating frame 411 located at the third grinding station 25 is an inverted cone and the frosted layer 412 is on the outer cone surface of the conical rotating frame 411, and the conical rotating frame 411 located at the fourth grinding station 26 is an inverted cone and the frosted layer 412 is on the inner cone surface of the conical rotating frame 411.

[0066] When the jig arrives at the first grinding station 22, the outer conical surface of the positive cone of the conical rotating frame 411 makes the frosted layer 412 closely fit the arc edges 11 on the inner side of the lower ends of all tile-shaped magnets 1 in the jig 3. When the conical rotating frame 411 rotates, the frosted layer 412 and the arc edges 11 of the tile-shaped magnets 1 are kept in a continuous state of conflict, and synchronous chamfering is performed.

[0067] When the jig arrives at the second grinding station 23, the inner conical surface of the cone of the conical rotating frame 411 makes the frosted layer 412 closely fit the arc edges 11 of the upper outer sides of all tile-shaped magnets 1 in the jig 3. When the conical rotating frame 411 rotates, the frosted layer 412 and the arc edges 11 of the tile-shaped magnets 1 are kept in a continuous state of conflict, and synchronous chamfering is performed.

[0068] When the jig arrives at the third grinding station 25, the outer conical surface of the inverted cone of the conical rotating frame 411 makes the frosted layer 412 closely fit the arc edges 11 on the inner sides of the upper ends of all tile-shaped magnets 1 in the jig 3. When the conical rotating frame 411 rotates, the frosted layer 412 and the arc edges 11 of the tile-shaped magnets 1 are kept in a continuous state of conflict, and synchronous chamfering is performed.

[0069] When the jig arrives at the fourth grinding station 26, the inner conical surface of the inverted cone of the conical rotating frame 411 makes the frosted layer 412 closely fit the arc edges 11 of the outer sides of the lower ends of all tile-shaped magnets 1 in the jig 3. When the conical rotating frame 411 rotates, the frosted layer 412 and the arc edges 11 of the tile-shaped magnets 1 are kept in a continuous state of conflict, and synchronous chamfering is performed.

[0070] See also Figure 8-Figure 12As shown, the frosted layer 412 is a tapered annular closed structure. When the frosted layer 412 contacts and rotates with the arc edges 11 of all tile-shaped magnets 1 in the fixture 3, the frosted layer 412 and the arc edges 11 of the tile-shaped magnets 1 are in a state of continuous conflict.

[0071] When the lifting drive lowers or raises the conical rotating frame 411 to a suitable position, the frosted layer 412 first contacts the arc edge 11 of the tile-shaped magnet 1 in the fixture 3. As the rotating drive is started, the conical rotating frame 411 drives the frosted layer 412 to rotate horizontally. Since the frosted layer 412 is an annular closed structure with a taper, the frosted layer 412 can always maintain a tight and continuous resistance state with the arc edges 11 of all tile-shaped magnets 1 in the fixture 3.

[0072] During the entire rotation and pressing process, the frosted layer 412 applies uniform pressure to the arc edge 11 of the tile-shaped magnet 1, ensuring that the arc edge 11 of each tile-shaped magnet 1 can be chamfered uniformly and finely.

[0073] See also Figure 8-Figure 12 As shown, a flexible pressure structure is provided between the frosted layer 412 and the conical rotating frame 411 to assist the frosted layer 412 in completely resisting the arc edge 11 of the tile-shaped magnet 1 .

[0074] When the lifting drive lowers or raises the conical rotating frame 411 to a suitable position, the frosted layer 412 contacts the arc edge 11 of the tile-shaped magnet 1 in the fixture 3. At this time, the flexible pressure structure is activated to ensure that the frosted layer 412 can fit the arc edge 11 of the tile-shaped magnet 1 softly and evenly.

[0075] As the rotary drive is started, the conical rotary frame 411 drives the frosted layer 412 to rotate horizontally. Since all the tile-shaped magnets 1 arranged in a stepped manner in the fixture 3 are not on the same axis, the flexible pressure structure automatically adjusts the pressure distribution according to the arc edge 11 of the tile-shaped magnet 1 to ensure that the frosted layer 412 always maintains a tight and complete resistance state with the arc edge 11 of each tile-shaped magnet 1.

[0076] During the entire rotation process, the flexible pressure structure enables the frosted layer 412 to flexibly adapt to the arc edges 11 of the tile-shaped magnet 1. Even if the center of the rotating axis 52 of the conical rotating frame 411 does not coincide with the center of the tile-shaped magnet 1, the integrity of the grinding process is guaranteed. Ensure that the frosted layer 412 applies uniform pressure to the arc edges 11 of all tile-shaped magnets 1 in the fixture 3, avoiding local overpressure or underpressure, so that the chamfering process is more delicate and smooth. The arc edges 11 of each tile-shaped magnet 1 can be accurately and consistently chamfered, greatly improving the accuracy and quality of the chamfering.

[0077] See also Figure 8-Figure 12 As shown, the flexible pressure structure has an airbag 5 arranged on a conical rotating frame 411, and a frosted layer 412 is attached to the outer surface of the airbag 5. A pressurized chamber 51 is formed between the airbag 5 and the conical rotating frame 411. When the pressurized chamber 51 is pressurized, the airbag 5 is in an expanded state, so that the frosted layer 412 is in close contact with the arc edge 11 of the tile-shaped magnet 1.

[0078] When the flexible pressure structure is activated, the control system inflates the pressure chamber 51, and the airbag 5 begins to expand. Since the frosted layer 412 is attached to the outer surface of the airbag 5, as the airbag 5 expands, the frosted layer 412 gradually contacts the arc edge 11 of the tile-shaped magnet 1 and applies soft and uniform pressure.

[0079] As the airbag 5 continues to expand, the frosted layer 412 maintains a tight and complete contact state with the arc edge 11 of the tile-shaped magnet 1, ensuring that the frosted layer 412 can fully cover and fit each arc edge 11 of the tile-shaped magnet 1, providing uniform grinding pressure.

[0080] See also Figure 8-Figure 12 As shown, a rotating shaft 52 drivingly connected to a rotating driver is disposed on the conical rotating frame 411 , the rotating shaft 52 has a pipe 521 communicating with an external air source, and the conical rotating frame 411 has an air passage communicating with the pipe 521 and the pressurized chamber 51 .

[0081] A pipe 521 connected to an external gas source is provided in the rotating shaft 52 for transmitting gas. The external gas source transmits gas to the conical rotating frame 411 through the pipe 521 in the rotating shaft 52. The airway inside the conical rotating frame 411 guides the gas to the pressurized chamber 51, so that the airbag 5 gradually expands.

[0082] After the airbag 5 is inflated, the frosted layer 412 attached to the outer surface thereof is pushed and gradually comes into close contact with the arc edge 11 of the tile-shaped magnet 1 in the fixture 3 .

[0083] See also Figure 8-Figure 12 As shown, the conical rotating frame 411 has an interlayer 4111 connected to the pipeline 521, and a plurality of air holes 4112 connected to the interlayer 4111 and the pressurized chamber 51 are opened on the conical rotating frame 411 along its circumferential direction, and the air holes 4112 and the interlayer 4111 together form the airway.

[0084] When chamfering is required, an external gas source delivers gas to the interlayer 4111 of the conical rotating frame 411 through the pipeline 521 in the rotating shaft 52. The gas in the interlayer 4111 enters the pressurizing chamber 51 through a plurality of air holes 4112 opened along the circumferential direction, so that the airbag 5 gradually expands.

[0085] The multiple air holes 4112 ensure that the gas can be evenly distributed in the pressurized chamber 51, so that the airbag 5 expands more evenly, and further improves the pressure uniformity of the contact between the frosted layer 412 and the arc edge 11 of the tile-shaped magnet 1.

[0086] See also Figure 5 and Fig.13 As shown, the fixture 3 is provided with elastic clamping grooves 35 for automatically generating clamping force after the plurality of tile-shaped magnets 1 are inserted.

[0087] The elastic clamping groove 35 is made of a material with a certain elasticity, such as spring steel, rubber, etc., to ensure that it can provide an appropriate clamping force when the tile-shaped magnet 1 is inserted.

[0088] When placing the tile-shaped magnet 1, the operator or the automated equipment inserts the tile-shaped magnet 1 into the elastic slot 35 on the fixture 3 one by one. When the tile-shaped magnet 1 begins to enter the elastic slot 35, the elastic material is squeezed and slightly deformed.

[0089] As the tile-shaped magnet 1 is fully inserted into the predetermined position, the elastic restoring force of the elastic slot 35 will apply a uniform clamping force to the tile-shaped magnet 1, ensuring that the tile-shaped magnet 1 is stably fixed in the elastic slot 35 and avoiding slippage.

[0090] When it is necessary to take out the tile-shaped magnet 1 , it is only necessary to slightly apply external force to overcome the clamping force of the elastic slot 35 , and the tile-shaped magnet 1 can be smoothly taken out of the elastic slot 35 .

[0091] See also Figure 5 and Fig.13 As shown, the elastic slot 35 has a guide edge 351 at one end where the tile-shaped magnet 1 is inserted from top to bottom, which is used to help the tile-shaped magnet 1 to be smoothly inserted into the elastic slot 35 in a vertical state.

[0092] The guide edge 351 at the edge of the elastic slot 35 enables the tile-shaped magnet 1 to be accurately aligned with the opening of the elastic slot 35 when inserted, ensuring that the tile-shaped magnet 1 always remains in a vertical state.

[0093] Even if there is a slight deviation during operation, the guide edge 351 can help the tile-shaped magnet 1 to smoothly adjust its position, thereby ensuring that the tile-shaped magnet 1 always enters the elastic slot 35 along the correct path during insertion, thereby improving the insertion accuracy.

[0094] The present invention ensures the stable arrangement of the tile-shaped magnets 1 in the first to fourth grinding stations 26 by means of the stepped support platform 311, so that the arc edge 11 of each tile-shaped magnet 1 can be accurately contacted and chamfered by the frosting layer 412. Each grinding station performs synchronous chamfering on the arc edges 11 of multiple tile-shaped magnets 1, which significantly improves the processing efficiency.

[0095] The frosted layer 412 is tightly fitted to the arc edge 11 of the tile-shaped magnet 1 and is kept in a continuous resistance state through rotation, so that each arc edge 11 is ensured to be chamfered uniformly.

[0096] The expansion characteristics of the airbag 5 enable the frosted layer 412 to maintain a tight and complete contact state with the arc edge 11 of the tile-shaped magnet 1, avoiding local overpressure or underpressure, and ensuring a precise and consistent chamfering effect.

[0097] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A batch chamfering device for processing NdFeB magnets, characterized in that: Used for chamfering the upper and lower arc edges of the inner and outer sides of tile-shaped magnets, including a rotary disk and a plurality of jigs arranged around its axial direction for vertically movably plugging a plurality of tile-shaped magnets, and a loading station, a first grinding station, a second grinding station, an adjustment station, a third grinding station, a fourth grinding station and a discharging station are sequentially arranged around the rotating direction of the rotary disk; It also includes a first top block, a first pressing block, a second top block and a second pressing block formed with a stepped support platform, the support platforms on the first top block and the second pressing block gradually increase step by step along the radial direction of the revolving turntable, and the support platforms on the first pressing block and the second top block gradually decrease step by step along the radial direction of the revolving turntable; Also included is a grinding mechanism for synchronously grinding all tile-shaped magnets on the same jig; The first grinding station is provided with the first pressing block located directly above the jig and the grinding mechanism for grinding the inner arc edges of the lower ends of all tile-shaped magnets in the jig; The second grinding station is provided with the first top block located directly below the jig and the grinding mechanism for grinding the outer arc edges of the upper ends of all tile-shaped magnets in the jig; The third grinding station is provided with the second top block located directly below the jig and the grinding mechanism for grinding the inner arc edges of the upper ends of all tile-shaped magnets in the jig; The fourth grinding station is provided with the second pressing block located just above the jig and the grinding mechanism for grinding the outer arc edges of the lower ends of all tile-shaped magnets in the jig.

2. A batch chamfering device for processing NdFeB magnets according to claim 1, characterized in that: The adjustment station is provided with a second pressing block located directly above the jig, a second top block located directly below the jig, and a linear drive for driving the second pressing block and the second top block to move toward the jig simultaneously; The loading station is provided with the first top block located directly below the jig; The unloading station is provided with a material pressing device located just above the jig.

3. A batch chamfering device for processing NdFeB magnets according to claim 2, characterized in that: The grinding mechanism comprises a sanding disc and a rotary driver for driving the sanding disc to rotate horizontally and a lifting driver for driving the sanding disc to move vertically.

4. A batch chamfering device for processing NdFeB magnets according to claim 3, characterized in that: The sand tray is composed of a conical rotating frame and a frosted layer arranged on the conical rotating frame. When the conical rotating frame is driven by the lifting drive to cause the frosted layer to apply pressure to all tile-shaped magnets in the fixture, the frosted layer and the corresponding arc edges of the tile-shaped magnets are in a state of conflict.

5. A batch chamfering device for processing NdFeB magnets according to claim 4, characterized in that: The conical rotating frame at the first grinding station is a right cone and the frosted layer is located on the outer conical surface of the conical rotating frame; The conical rotating frame at the second grinding station is a right cone and the frosted layer is located on the inner conical surface of the conical rotating frame; The conical rotating frame at the third grinding station is an inverted cone and the frosting layer is located on the outer conical surface of the conical rotating frame; The conical rotating frame at the fourth grinding station is an inverted cone, and the frosting layer is located on the inner cone surface of the conical rotating frame.

6. A batch chamfering device for processing NdFeB magnets according to claim 5, characterized in that: A flexible pressure structure is arranged between the frosted layer and the conical rotating frame to assist the frosted layer in completely resisting the arc edge of the tile-shaped magnet.

7. A batch chamfering device for processing NdFeB magnets according to claim 6, characterized in that: The flexible pressure structure has an airbag arranged on a conical rotating frame, and a frosted layer is attached to the outer surface of the airbag. A pressurized chamber is formed between the airbag and the conical rotating frame. When the pressurized chamber is pressurized, the airbag is in an expanded state, so that the frosted layer and the arc edges of the tile-shaped magnet are in a state of tight contact.

8. A batch chamfering device for processing NdFeB magnets according to claim 7, characterized in that: A rotating shaft drivingly connected to the rotating driver is arranged on the conical rotating frame, the rotating shaft has a pipeline communicating with an external air source, and the conical rotating frame has an air passage communicating with the pipeline and the pressurized chamber.

9. A batch chamfering device for processing NdFeB magnets according to claim 8, characterized in that: The conical rotating frame has an interlayer connected to the pipeline. The conical rotating frame is provided with a plurality of air holes connected to the interlayer and the pressurized cavity along its circumferential direction. The air holes and the interlayer together form the airway.

10. The batch chamfering device for processing NdFeB magnets according to claim 1, characterized in that: The fixture is provided with elastic slots for automatically generating clamping force after multiple tile-shaped magnets are inserted. The elastic slot is located at one end where the tile-shaped magnet is inserted from top to bottom and has a guiding edge for helping the tile-shaped magnet to be smoothly inserted into the elastic slot in a vertical state.

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