Neodymium iron boron grinding equipment

Abstract

The utility model relates to the technical field of neodymium-iron-boron magnet machining, and discloses neodymium-iron-boron grinding machining equipment which comprises a machining table, a moving assembly, a clamp assembly and a vibration reduction assembly. According to the neodymium-iron-boron grinding equipment, the first clamping plate and the second clamping plate are driven by the two-way screw rod to move synchronously, and a first flexible clamp and a second flexible clamp are combined, so that centering suspended clamping of a neodymium-iron-boron magnet is achieved, bottom surface contact is avoided, multi-surface grinding can be completed without repeated clamping, a worm and a worm wheel are matched and meshed, and the grinding efficiency is improved. Meanwhile, an air cylinder controls a limiting rack and a plane gear to be meshed or separated, a double-locking mechanism is formed, the anti-torque capacity is improved while the overturning precision is guaranteed, and a rubber damping block in an inner cavity of the machining table can absorb high-frequency grinding vibration; the stainless steel spiral spring arranged outside in a sleeving mode isolates vibration of low-frequency equipment, the rubber damping pad on the bottom face of the machining table is combined, the overall vibration attenuation rate can be increased, and the grinding quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the neodymium iron boron magnet processing technical field, in particular to a neodymium iron boron grinding processing equipment. BACKGROUND

[0002] The neodymium iron boron magnet is a magnet body formed by neodymium, iron and boron elements, has a wide application in the fields of electronic machinery and aerospace based on the advantage of large magnetic energy product, and is a basic element for making a permanent magnet motor in daily production and life. The neodymium iron boron magnet needs to be ground after production to determine the size and outer surface, so as to facilitate subsequent spraying and electroplating operations.

[0003] The existing patent (announcement number: CN218801530U) discloses a clamp for grinding processing of a neodymium iron boron magnet, which comprises a clamp base and an assembly bottom plate, the clamp base is provided with the assembly bottom plate at the bottom end, a center shaft is movably connected to the middle position in the clamp base, a gear is fixedly sleeved on the outer portion of the center shaft, gear rails are arranged above and below the gear respectively, moving grooves are formed in the top end and the bottom end of the inner wall of the clamp base, the gear rails are embedded in the moving grooves respectively, and the gear rails are in meshing connection with the gear. The clamp for grinding processing of the neodymium iron boron magnet is provided with the gear, the gear rail, the connecting frame, the screw rod, the threaded block and the clamping rod, the clamp can clamp the magnet block in four directions, the meshing stability of the gear and the gear rail is high, the clamping effect is better, the stability of the magnet block is maintained during the grinding processing, the deviation phenomenon is eliminated, and the problem of processing failure caused by the failure of clamping stability is solved.

[0004] Although the device in the above-mentioned comparative document can stably position the magnet block, the bottom surface of the magnet is in contact with the clamp, the bottom surface needs to be re-clamped and positioned during grinding, the process is relatively complicated, and the device does not have a damping component, so that the magnet block is affected by vibration during high-speed grinding. In order to solve the above-mentioned problems, a neodymium iron boron grinding processing equipment is provided. Practical new type content

[0005] In view of the defects of the prior art, the application provides a neodymium iron boron grinding processing equipment, which realizes multi-surface grinding of the neodymium iron boron magnet through bidirectional screw rod centering suspension clamping, worm and gear-rack double-lock overturning and a composite damping component, and has stability and efficiency.

[0006] In order to achieve the above-mentioned purpose, the application provides the following technical scheme: a neodymium iron boron grinding processing equipment, comprising a processing table, a moving assembly, a clamp assembly and a damping assembly, the moving assembly comprises a bidirectional screw rod rotatingly sleeved in the processing table and moving blocks threadedly connected at both ends of the bidirectional screw rod, and the upper surfaces of the two moving blocks are respectively fixedly connected with first clamping plates and second clamping plates.

[0007] The clamp assembly comprises a first flexible clamp rotatably sleeved on the top of the first clamping plate and a second flexible clamp rotatably sleeved on the top of the second clamping plate, the rotating shaft end of the first flexible clamp is fixedly connected with a worm gear, the outer surface of the first clamping plate is provided with a worm and a second servo motor, the worm is engaged with the worm gear, the output end of the second servo motor is fixedly connected with the rotating shaft end of the worm, the rotating shaft end of the second flexible clamp is fixedly connected with a plane gear, the outer surface of the second clamping plate is fixedly connected with an air cylinder, and the output end of the air cylinder is fixedly connected with a limiting rack engaged with the plane gear.

[0008] Through the above scheme, the first clamping plate and the second clamping plate are driven by the bidirectional screw rod to move synchronously, and the first flexible clamp and the second flexible clamp are combined to realize the centering and suspension clamping of the Nd-Fe-B magnet, avoid the contact with the bottom surface, and complete the grinding of multiple surfaces without repeated clamping. The worm and the worm gear are engaged with each other to drive the first flexible clamp to overturn, and the air cylinder controls the engagement or separation of the limiting rack and the plane gear to form a double locking mechanism, which ensures the overturning precision and improves the torsional moment capacity. The damping assembly can absorb high-frequency grinding vibration and isolate low-frequency equipment vibration, improve the overall vibration attenuation rate, reduce the influence caused by vibration, and be more practical.

[0009] Further, the upper surface of the machining table is provided with two sliding grooves, and the outer surfaces of the first clamping plate and the second clamping plate are respectively slidably sleeved on the inner walls of the two sliding grooves.

[0010] Through the above scheme, the sliding grooves can drive the first clamping plate and the second clamping plate to move in the corresponding sliding grooves when the moving blocks move.

[0011] Further, the machining table is fixedly connected with a first servo motor on one side, and the output end of the first servo motor is fixedly connected with the rotating shaft end of the bidirectional screw rod.

[0012] Through the above scheme, the bidirectional screw rod can be driven to rotate when the first servo motor is started.

[0013] Further, the machining table is internally provided with two guide rods, and the two ends of the two moving blocks are respectively slidably sleeved on the outer surfaces of the two guide rods. The outer surface of each guide rod is fixedly connected with two limiting pieces.

[0014] Through the above scheme, the guide rods can make the moving blocks move more stably inside the machining table, and the limiting pieces can limit the moving range of the moving blocks to avoid motion interference between the moving blocks and other components.

[0015] Further, the damping assembly comprises rubber damping pads fixedly connected to the bottom surface of the machining table and four rubber damping blocks arranged inside the machining table, and the four corners of the machining table are fixedly connected with connecting bases.

[0016] Through the above scheme, the rubber damping pads can realize external damping effect, further isolate the transmission of ground vibration, and the connecting bases can position the device at a suitable position, thereby improving the stability of the device.

[0017] Further, the bottom surface of each of the four rubber damping blocks is fixedly connected with the inner bottom wall of the machining table, and the top end of each of the four rubber damping blocks is fixedly connected with the inner top wall of the machining table, and the outside of each rubber damping block is sleeved with a stainless steel spiral spring.

[0018] Through the above scheme, the rubber damping blocks can realize energy dissipation by virtue of the viscoelastic properties of the material itself, can quickly absorb high-frequency vibrations generated during grinding, the stainless steel spiral spring is an elastic support element, mainly provides linear restoring force and adjusts the natural frequency of the system, and the elastic deformation of the stainless steel spiral spring can isolate low-frequency vibrations transmitted by the device foundation.

[0019] Further, the bottom end of each stainless steel spiral spring is fixedly connected with the inner bottom wall of the machining table, and the top end of each stainless steel spiral spring is fixedly connected with the inner top wall of the machining table.

[0020] Through the above scheme, the stainless steel spiral spring and the rubber damping block cooperate with each other to realize internal damping effect, can effectively absorb grinding vibration, and reduce the influence caused by vibration.

[0021] Further, the outer surface of the machining table is fixedly connected with a controller, and the electrical elements inside the moving assembly and the clamp assembly are electrically connected with the controller.

[0022] Through the above scheme, the controller can be conveniently arranged to control the electrical elements inside the moving assembly and the clamp assembly, thereby simplifying the operation process and being more practical.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] The neodymium iron boron grinding device drives the first clamping plate and the second clamping plate to move synchronously through the bidirectional screw, realizes the centering and suspended clamping of the neodymium iron boron magnet in combination with the first flexible clamp and the second flexible clamp, avoids the bottom surface contact, completes the multi-surface grinding without repeated clamping, the worm and the worm wheel are engaged with each other to drive the first flexible clamp to overturn, the engagement or separation of the limit rack and the bevel gear is controlled by the cylinder to form a double locking mechanism, the overturning precision is ensured, the torsional moment capacity is improved, the rubber damping block in the inner cavity of the machining table can absorb the high-frequency grinding vibration, the external stainless steel spiral spring can isolate the low-frequency equipment vibration, in combination with the rubber damping pad on the bottom surface of the machining table, the overall vibration attenuation rate can be improved, the grinding quality is improved, and the device is more practical. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a whole front view structural schematic diagram of the structure of the application;

[0026] Figure 2 It is a whole bottom view structural schematic diagram of the structure of the application;

[0027] Figure 3 It is a whole side view structural schematic diagram of the structure of the application;

[0028] Figure 4 It is a whole sectional plane structural schematic diagram of the structure of the application;

[0029] Figure 5 It is a partial top view structural schematic diagram of the structure of the application.

[0030] In the drawings:

[0031] 1, machining table; 2, moving assembly; 201, bidirectional screw; 202, moving block; 203, first clamping plate; 204, second clamping plate; 205, sliding groove; 206, first servo motor; 207, guide rod; 208, limit piece; 3, clamp assembly; 301, first flexible clamp; 302, second flexible clamp; 303, worm wheel; 304, worm; 305, second servo motor; 306, bevel gear; 307, cylinder; 308, limit rack; 4, damping assembly; 401, rubber damping pad; 402, rubber damping block; 403, stainless steel spiral spring; 5, controller; 6, connecting base. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0033] Please refer to Figure 1 , Figure 3 and Figure 5 , a neodymium iron boron grinding device in the embodiment, comprising a processing table 1, a moving assembly 2, a clamp assembly 3 and a damping assembly 4, the moving assembly 2 comprises a bidirectional screw rod 201 rotatingly sleeved in the processing table 1 and a moving block 202 threadedly connected at both ends of the bidirectional screw rod 201, the upper surfaces of the two moving blocks 202 are respectively fixedly connected with a first clamping plate 203 and a second clamping plate 204, the upper surface of the processing table 1 is provided with two sliding grooves 205, the outer surfaces of the first clamping plate 203 and the second clamping plate 204 are respectively slidingly sleeved in the inner walls of the two sliding grooves 205, and the moving block 202 can drive the first clamping plate 203 and the second clamping plate 204 to move in the corresponding sliding grooves 205 when moving through the sliding grooves 205.

[0034] Please refer to Figure 1 , Figure 4 and Figure 5 , one side of the processing table 1 is fixedly connected with a first servo motor 206, the output end of the first servo motor 206 is fixedly connected with the rotating shaft end of the bidirectional screw rod 201, the bidirectional screw rod 201 can be driven to rotate when the first servo motor 206 is started, two guide rods 207 are installed in the processing table 1, the two ends of the two moving blocks 202 are respectively slidingly sleeved on the outer surfaces of the two guide rods 207, two limiting sheets 208 are fixedly connected with the outer surfaces of each guide rod 207, the moving block 202 can move more stably in the processing table 1 through the guide rods 207, and the range of movement of the moving block 202 can be limited through the limiting sheets 208, so that the movement interference between the moving block 202 and other assemblies is avoided.

[0035] Please refer to Figure 2 , Figure 3 and Figure 4The clamp assembly 3 comprises a first flexible clamp 301 rotatably sleeved on the top of the first clamping plate 203 and a second flexible clamp 302 rotatably sleeved on the top of the second clamping plate 204. The first flexible clamp 301 and the second flexible clamp 302 are both existing assemblies, and thus the working principle and internal structure thereof are not described herein. The first flexible clamp 301 and the second flexible clamp 302 can stably clamp and position the Nd-Fe-B magnet. The shaft end of the first flexible clamp 301 is fixedly connected with a worm gear 303. The outer surface of the first clamping plate 203 is provided with a worm 304 and a second servo motor 305. The worm 304 is engaged with the worm gear 303. The combination of the worm 304 and the worm gear 303 has the effects of deceleration and self-locking. On the one hand, the combination can avoid the situation that the rotation speed is too fast and it is inconvenient to adjust the position. On the other hand, the combination can ensure the stable direction after the Nd-Fe-B magnet is turned over. The output end of the second servo motor 305 is fixedly connected with the shaft end of the worm 304. When the second servo motor 305 is started, the worm 304 can be driven to rotate. The shaft end of the second flexible clamp 302 is fixedly connected with a plane gear 306. The outer surface of the second clamping plate 204 is fixedly connected with an air cylinder 307. The output end of the air cylinder 307 is fixedly connected with a limiting rack 308 engaged with the plane gear 306. The plane gear 306, the air cylinder 307 and the limiting rack 308 are matched with each other, which can have the effect of auxiliary locking, and further improve the stability of the Nd-Fe-B magnet after being turned over by the first flexible clamp 301 and the second flexible clamp 302.

[0036] Please refer to Figure 3 、 Figure 4 and Figure 5The damping assembly 4 includes a rubber damping pad 401 fixedly connected to the bottom surface of the machining table 1 and four rubber damping blocks 402 arranged inside the machining table 1. The four corners of the machining table 1 are fixedly connected with the connecting bases 6. The rubber damping pad 401 can achieve the effect of external damping and further isolate the transmission of ground vibration. The connecting bases 6 can position the device at a suitable position, thereby improving the stability of the device. The bottom surface of each rubber damping block 402 is fixedly connected with the inner bottom wall of the machining table 1, and the top end of each rubber damping block 402 is fixedly connected with the inner top wall of the machining table 1. The outer part of each rubber damping block 402 is sleeved with a stainless steel spiral spring 403. The rubber damping block 402 can dissipate energy by virtue of the viscoelastic properties of the material itself, quickly absorb high-frequency vibrations generated during grinding, and the stainless steel spiral spring 403 is an elastic support element that mainly provides linear restoring force and adjusts the natural frequency of the system. The elastic deformation of the stainless steel spiral spring 403 can isolate low-frequency vibrations transmitted by the device foundation. The bottom end of each stainless steel spiral spring 403 is fixedly connected with the inner bottom wall of the machining table 1, and the top end of each stainless steel spiral spring 403 is fixedly connected with the inner top wall of the machining table 1. The stainless steel spiral spring 403 and the rubber damping block 402 cooperate to achieve the effect of internal damping, effectively absorb grinding vibrations, and reduce the impact of vibrations. The outer surface of the machining table 1 is fixedly connected with a controller 5. The electrical elements inside the moving assembly 2 and the clamp assembly 3 are electrically connected with the controller 5. The controller 5 can conveniently control the electrical elements inside the moving assembly 2 and the clamp assembly 3, simplifying the operation process and being more practical.

[0037] In the embodiment, the neodymium iron boron grinding device drives the first clamping plate 203 and the second clamping plate 204 to move synchronously through the bidirectional screw rod 201, and realizes the centering and suspended clamping of the neodymium iron boron magnet in combination with the first flexible clamp 301 and the second flexible clamp 302, avoids the bottom surface contact, and completes the multi-surface grinding without repeated clamping. The worm 304 and the worm wheel 303 are engaged with each other to drive the first flexible clamp 301 to overturn, and the cylinder 307 controls the engagement or separation of the limit rack 308 and the parallel face gear 306, forming a double locking mechanism to ensure the overturning precision and improve the torsional moment capacity. The rubber damping block 402 in the inner cavity of the machining table 1 can absorb high-frequency grinding vibrations, the externally sleeved stainless steel spiral spring 403 can isolate low-frequency device vibrations, and in combination with the rubber damping pad 401 at the bottom surface of the machining table 1, the overall vibration attenuation rate can be improved, the grinding quality can be improved, and the device is more practical.

[0038] The working principle of the above embodiment is that the bidirectional screw rod 201 inside the processing table 1 rotates under the drive of the first servo motor 206, and drives the moving blocks 202 at both ends to move synchronously in the sliding groove 205 along the guide rod 207, thereby pushing the first clamping plate 203 and the second clamping plate 204 to center and clamp the Nd-Fe-B magnet, and during the clamping process, the first flexible clamp 301 and the second flexible clamp 302 are started to suspend and clamp the Nd-Fe-B magnet, when it needs to be turned over, the second servo motor 305 drives the worm 304 to engage with the worm gear 303, drives the first flexible clamp 301 to rotate, at the same time, the cylinder 307 retracts the limiting rack 308 to disengage from the bevel gear 306, releases the driven side limitation, so that the second flexible clamp 302 is passively turned over with the Nd-Fe-B magnet, after reaching the target angle, the cylinder 307 pushes out the limiting rack 308 to engage with the bevel gear 306, combined with the self-locking property of the worm gear 303 and the worm 304 to form double locking, to ensure the processing stability, so that different surfaces of the Nd-Fe-B magnet can be ground, and the repeated clamping work is no longer needed, which is more practical. During the grinding process, the rubber damping block 402 in the inner cavity of the processing table 1 absorbs high-frequency vibration energy through viscoelastic deformation, the stainless steel spiral spring 403 sleeved thereon isolates low-frequency equipment vibration, and the bottom rubber damping pad 401 further attenuates external vibration transmission, and the three can cooperate to significantly reduce the overall vibration amplitude, thereby optimizing the grinding quality.

[0039] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0040] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A neodymium iron boron grinding processing equipment, comprising a processing table (1), a moving assembly (2), a clamping assembly (3), and a vibration damping assembly (4), characterized in that: The moving component (2) includes a bidirectional lead screw (201) rotatably sleeved inside the processing table (1) and moving blocks (202) threadedly connected to both ends of the bidirectional lead screw (201). The upper surfaces of the two moving blocks (202) are respectively fixedly connected to a first clamping plate (203) and a second clamping plate (204). The clamping assembly (3) includes a first flexible clamp (301) rotatably sleeved on the top of the first clamping plate (203) and a second flexible clamp (302) rotatably sleeved on the top of the second clamping plate (204). The first flexible clamp (301) has a worm gear (303) fixedly connected to its shaft end. The outer surface of the first clamping plate (203) is equipped with a worm (304) and a second servo motor (305). The worm (304) meshes with the worm gear (303). The output end of the second servo motor (305) is fixedly connected to the shaft end of the worm (304). The shaft end of the second flexible clamp (302) is fixedly connected with a planar gear (306). The outer surface of the second clamping plate (204) is fixedly connected with a cylinder (307). The output end of the cylinder (307) is fixedly connected with a limiting rack (308) that meshes with the planar gear (306).

2. The NdFeB grinding equipment according to claim 1, characterized in that: The upper surface of the processing table (1) has two sliding grooves (205), and the outer surfaces of the first clamping plate (203) and the second clamping plate (204) are respectively slidably sleeved on the inner walls of the two sliding grooves (205).

3. The NdFeB grinding equipment according to claim 1, characterized in that: A first servo motor (206) is fixedly connected to one side of the processing table (1), and the output end of the first servo motor (206) is fixedly connected to the shaft end of the bidirectional lead screw (201).

4. The NdFeB grinding equipment according to claim 1, characterized in that: The processing table (1) has two guide rods (207) installed inside. The two ends of the two moving blocks (202) are respectively slidably sleeved on the outer surface of the two guide rods (207). Two limiting pieces (208) are fixedly connected to the outer surface of each guide rod (207).

5. The NdFeB grinding equipment according to claim 1, characterized in that: The vibration damping component (4) includes a rubber damping pad (401) fixedly connected to the bottom surface of the processing table (1) and four rubber damping blocks (402) set inside the processing table (1). A connecting base (6) is fixedly connected to each of the four corners of the processing table (1).

6. The NdFeB grinding equipment according to claim 5, characterized in that: The bottom surfaces of the four rubber damping blocks (402) are fixedly connected to the inner bottom wall of the processing table (1), the top surfaces of the four rubber damping blocks (402) are fixedly connected to the inner top wall of the processing table (1), and each rubber damping block (402) is fitted with a stainless steel helical spring (403).

7. The NdFeB grinding equipment according to claim 6, characterized in that: The bottom end of each of the stainless steel helical springs (403) is fixedly connected to the inner bottom wall of the processing table (1), and the top end of each of the stainless steel helical springs (403) is fixedly connected to the inner top wall of the processing table (1).

8. The NdFeB grinding equipment according to claim 1, characterized in that: The outer surface of the processing table (1) is fixedly connected to a controller (5), and the electrical components inside the moving component (2) and the fixture component (3) are all electrically connected to the controller (5).

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