A clamping tool for processing sintered neodymium-iron-boron magnetic steel

Abstract

The utility model relates to the technical field of magnetic material processing equipment, especially a kind of clamping tool for sintered neodymium-iron-boron magnetic steel processing, solve the problem of the prior art in the replacement of magnetic steel specification each time needs to be dismantled and re-adjusted X direction stopper and Y direction stopper on bolt in turn, operation is complicated, time-consuming and laborious, seriously affect clamping operation efficiency and automation level.The clamping tool includes V-shaped frame and the rectangular frame connected at its one end, both internal intercommunication, two inner walls of V-shaped frame are provided with contact pad, and are connected with V-shaped frame top by connecting structure.The utility model passes through the self-adapting limiting effect of V-shaped frame and contact pad, combines elastic pushing clamping structure, realizes the quick stable clamping of different size magnetic steel, without repeatedly disassembling and adjusting stopper, significantly improves clamping efficiency and operation convenience, enhances the stability and security of clamping process.

Description

Technical Field

[0001] This utility model relates to the field of magnetic material processing equipment technology, and in particular to a clamping fixture for processing sintered NdFeB magnets. Background Technology

[0002] Sintered NdFeB magnets occupy an important position in the field of magnetic materials. As a core component of high-performance permanent magnets, their processing accuracy and stability have a decisive impact on the performance of the final product. Especially in the manufacturing of precision electronic devices such as motors, sensors, and speakers, the drilling and milling processes of sintered NdFeB magnets are particularly critical. To ensure processing quality and safety, specialized clamping fixtures must be used to stably fix the square magnets to prevent positional displacement or damage caused by vibration or cutting forces during processing.

[0003] Patent CN201820650494.1 discloses a clamping fixture for square magnets. By creating X-axis and Y-axis slides on the fixture table and installing X-axis and Y-axis stops that can move along the slides, it achieves clamping of square magnets of different sizes. However, each time the magnet specifications are changed, the bolts on the X-axis and Y-axis stops need to be disassembled and readjusted sequentially. This operation is cumbersome, time-consuming, and labor-intensive, severely impacting the efficiency and automation level of the clamping operation.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a clamping fixture for processing sintered NdFeB magnets. This new fixture should significantly improve the efficiency and convenience of clamping and adjustment, while also possessing higher versatility and positioning accuracy, better meeting the clamping needs of modern and diversified production scenarios, and providing strong support for the continued development of the magnetic materials processing field. Utility Model Content

[0005] The purpose of this invention is to provide a clamping fixture for processing sintered NdFeB magnets, which solves the problem in the prior art that when changing the specifications of the magnets, it is necessary to disassemble and readjust the bolts on the X-axis stop and Y-axis stop in sequence, which is cumbersome, time-consuming and labor-intensive, and seriously affects the efficiency and automation level of the clamping operation.

[0006] To achieve the above objectives, this utility model provides a clamping fixture for processing sintered NdFeB magnets, including a V-shaped frame and a rectangular frame connected to one end of the V-shaped frame, wherein the interior of the rectangular frame is in communication with the interior of the V-shaped frame.

[0007] The two inner walls of the V-shaped frame are provided with contact pads, and the two contact pads are connected to the top of the V-shaped frame through a connecting structure.

[0008] An abutment plate and a push plate are provided on one side of the inside of the rectangular frame. One side of the push plate is connected to the abutment plate through an elastic structure, and the other side is connected to the side wall of the rectangular frame through a horizontal pushing structure.

[0009] The elastic structure includes two compression springs and an abutment post. One end of the compression spring is connected to the side wall of the abutment plate, and the other end is connected to the side wall of the push plate. One end of the abutment post is fixedly connected to the side wall of the abutment plate.

[0010] The connecting structure includes a connecting plate and a positioning plate. The two ends of the connecting plate are respectively connected to the ends of two contact pads. The positioning plate is connected to the top of the connecting plate and is detachably connected to the top of the V-shaped frame.

[0011] Two guide rods are connected to one side of the contact plate. One end of the guide rod slides through the push plate. Clamping plates are provided on both sides of the inside of the rectangular frame. An adjusting screw with one end threaded through the rectangular frame is rotatably connected to one side of the clamping plate.

[0012] The positioning plate has a positioning screw with one end threaded through it, and one end of the positioning screw is connected to the top of the V-shaped frame.

[0013] The contact pad has a rubber pad connected to one side, and the horizontal pushing structure includes a pushing cylinder installed on one side of the rectangular frame. The output end of the pushing cylinder is connected to one side of the pushing plate.

[0014] This utility model discloses a clamping fixture for processing sintered NdFeB magnets. Through a combination design of a V-shaped frame and contact pads, the V-shaped structure naturally limits the corners of the magnets, achieving adaptive clamping of magnets of various specifications. This eliminates the need for frequent changes or adjustments to the stops, effectively solving the problem of cumbersome operation and low efficiency caused by the repeated disassembly and repositioning of bolts when changing magnet sizes using traditional fixtures. This improves clamping efficiency and automation. Secondly, the contact pads are made of a material with a certain degree of elasticity, providing cushioning and protection during clamping to prevent damage to the magnet surface and ensure processing quality. Thirdly, the coordinated design of the push plate, contact plate, and elastic structure makes the clamping process more stable and reliable. The elastic structure automatically adjusts the clamping force according to the actual size of the magnet, avoiding stress concentration or deformation damage caused by rigid clamping, thus improving clamping stability and safety. Furthermore, the integrated design of the rectangular frame and V-shaped frame enhances the overall structural strength, improves clamping accuracy and repeatability, and is suitable for continuous, multi-batch production scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the contact pad structure according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the contact plate and the push plate according to an embodiment of the present utility model.

[0019] Figure 4 This is a structural schematic diagram of the connecting plate and positioning plate according to an embodiment of the present utility model.

[0020] Figure 5 This is a structural schematic diagram of the V-shaped frame and the rectangular frame according to an embodiment of the present utility model.

[0021] In the diagram: 1. V-shaped frame; 2. Magnet; 3. Rectangular frame; 4. Contact pad; 5. Abutment plate; 6. Push cylinder; 7. Guide rod; 8. Push plate; 9. Compression spring; 10. Abutment post; 11. Connecting plate; 12. Positioning plate; 13. Positioning screw; 14. Rubber pad; 15. Adjusting screw; 16. Clamping plate. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Example 1

[0024] Please see Figure 1-5 As shown, a clamping fixture for processing sintered NdFeB magnets in this embodiment includes a V-shaped frame 1 and a rectangular frame 3 connected to one end of the V-shaped frame 1. The interior of the rectangular frame 3 is in communication with the interior of the V-shaped frame 1.

[0025] Contact pads 4 are provided on both inner walls of the V-shaped frame 1, and the two contact pads 4 are connected to the top of the V-shaped frame 1 through a connecting structure.

[0026] A contact plate 5 and a push plate 8 are provided on one side of the inside of the rectangular frame 3. One side of the push plate 8 is connected to the contact plate 5 through an elastic structure, and the other side is connected to the side wall of the rectangular frame 3 through a horizontal push structure.

[0027] The working process is as follows: The device includes a V-shaped frame 1 and a rectangular frame 3 connected to one end of the V-shaped frame 1. The two are internally interconnected, forming a clamping space for accommodating the magnet 2. In use, the square magnet 2 to be processed is placed between the rectangular frame 3 and the V-shaped frame 1. The two corners on one side of the magnet 2 contact the two contact pads 4 on the inner wall of the V-shaped frame 1. Due to the inherent guiding characteristics of the V-shaped structure, it can automatically position and limit magnets of different sizes without the need for additional adjustment of the stops or removal of bolts. At the same time, the two contact pads 4 are connected to the top of the V-shaped frame 1 through a connecting structure to ensure its stability and fit. Subsequently, the horizontal pushing structure is activated, driving the pushing plate 8 to move towards the abutment plate 5. The pushing plate 8 is connected to the abutment plate 5 through an elastic structure, maintaining flexible contact pressure during the pushing process, so that the abutment plate 5 fits tightly against the side of the magnet 2, thereby achieving stable clamping and fixing of the magnet 2, providing reliable support for subsequent drilling, milling and other processing operations.

[0028] Example 2

[0029] Please see Figure 1-5 As shown in the figure, a clamping fixture for processing sintered NdFeB magnets in this embodiment has an elastic structure comprising two compression springs 9 and an abutment post 10. One end of the compression spring 9 is connected to the side wall of the abutment plate 5, and the other end is connected to the side wall of the push plate 8. One end of the abutment post 10 is fixedly connected to the side wall of the abutment plate 5. Specifically, through the arrangement of the compression springs 9 and the abutment post 10, during the clamping process, the push plate 8 is driven forward by the horizontal pushing structure, which compresses the compression springs 9 and causes the abutment plate 5 to adhere to the side of the magnet 2. The abutment post 10 plays an auxiliary support and guiding role on the abutment plate 5, ensuring that the clamping force is evenly distributed. This structure achieves flexible clamping, prevents damage to the magnet surface caused by rigid contact, and achieves the effects of improving clamping stability and protecting the workpiece surface.

[0030] Two guide rods 7 are connected to one side of the contact plate 5. One end of the guide rod 7 slides through the push plate 8. Clamping plates 16 are provided on both sides of the interior of the rectangular frame 3. One side of the clamping plate 16 is rotatably connected to an adjusting screw 15, one end of which is threaded through the rectangular frame 3. Specifically, through the sliding cooperation between the guide rod 7 and the push plate 8, the guide rod 7 passes through the push plate 8 and plays a guiding and limiting role as the push plate 8 moves along the rectangular frame 3, improving the smoothness and positioning accuracy of the pushing process. In addition, the clamping plate 16 is connected to the rectangular frame 3 through the adjusting screw 15, which can provide auxiliary clamping for the other side of the magnet 2, further enhancing the clamping stability and achieving the effect of improving clamping accuracy and structural rigidity.

[0031] A rubber pad 14 is connected to one side of the contact pad 4. The horizontal pushing structure includes a pushing cylinder 6 installed on one side of the rectangular frame 3. The output end of the pushing cylinder 6 is connected to one side of the pushing plate 8. Specifically, through the cooperation between the rubber pad 14 and the pushing cylinder 6, the rubber pad 14 is connected to one side of the contact pad 4 to enhance the friction and buffer protection at the corner of the magnet 2 during the clamping process. The pushing cylinder 6 serves as a power source to drive the pushing plate 8 forward, with fast response speed and high control precision, thereby improving clamping efficiency and ensuring clamping safety.

[0032] Example 3

[0033] Please see Figure 1-5 As shown in the figure, a clamping fixture for processing sintered NdFeB magnets in this embodiment includes a connecting plate 11 and a positioning plate 12. The two ends of the connecting plate 11 are respectively connected to the ends of two contact pads 4. The positioning plate 12 is connected to the top of the connecting plate 11 and is detachably connected to the top of the V-shaped frame 1. Specifically, through the cooperation of the connecting plate 11 and the positioning plate 12, the two contact pads 4 achieve overall linkage through the connecting plate 11. Simultaneously, the top of the positioning plate 12 is provided with a positioning screw 13, which can be detachably connected to the top of the V-shaped frame 1. This structure enhances the stability and consistency of the contact pad 4 installation and facilitates quick replacement or adjustment according to actual processing needs, achieving the effect of improving the versatility and ease of adjustment of the device.

[0034] The top of the positioning plate 12 is provided with a positioning screw 13, one end of which is threaded through the positioning plate 12. One end of the positioning screw 13 is connected to the top of the V-shaped frame 1. Specifically, through the cooperation between the positioning screw 13 and the positioning plate 12, when it is necessary to adjust or replace the contact pad 4, the operator can loosen or tighten the positioning screw 13 to fix or disassemble the positioning plate 12, thereby achieving precise adjustment of the position of the contact pad 4. This structure simplifies the maintenance and replacement process, and achieves the effect of improving assembly flexibility and ease of use.

[0035] This utility model discloses a clamping fixture for processing sintered NdFeB magnets. Its complete workflow is as follows: The device includes a V-shaped frame 1 and a rectangular frame 3 connected to one end of the V-shaped frame 1. The two frames are internally interconnected, forming a clamping space to accommodate the magnet 2. In use, the square magnet 2 to be processed is placed between the rectangular frame 3 and the V-shaped frame 1. Two corners on one side of the magnet 2 contact two contact pads 4 on the inner wall of the V-shaped frame 1. Due to the guiding characteristics of the V-shaped structure, automatic positioning and limiting of magnets of different sizes can be achieved without additional adjustment of stops or removal of bolts. Simultaneously, the two contact pads 4 are connected to the top of the V-shaped frame 1 through a connecting structure, ensuring stability and fit. The connecting structure consists of a connecting plate 11 and a positioning plate 12. The two ends of the connecting plate 11 are fixedly connected to the ends of the two contact pads 4 respectively. The positioning plate 12 is connected to the top of the connecting plate 11 and is detachably connected to the top of the V-shaped frame 1 through the positioning screw 13. When it is necessary to replace or adjust the contact pads 4, the operation can be completed quickly by loosening or tightening the positioning screw 13.

[0036] Subsequently, the horizontal pushing structure is activated. This structure is driven by a pushing cylinder 6 installed on one side of the rectangular frame 3, whose output end is connected to the pushing plate 8, causing the pushing plate 8 to move towards the contact plate 5. One side of the pushing plate 8 is connected to the contact plate 5 via an elastic structure, which includes two compression springs 9 and a contact post 10. One end of the compression spring 9 is connected to the contact plate 5, and the other end is connected to the pushing plate 8. During the clamping process, it plays a role in buffering and applying force flexibly, preventing damage to the magnet caused by rigid clamping. The contact post 10 enhances the stability and guidance of the contact plate 5 during movement, ensuring a uniform distribution of clamping force. In addition, a rubber pad 14 is also connected to one side of the contact pad 4 to further improve the friction and buffering protection effect during the clamping process.

[0037] To improve clamping accuracy and structural rigidity, two guide rods 7 are connected to one side of the contact plate 5. One end of the guide rod 7 slides through the push plate 8, serving as a guide and limiter during the pushing process, thus improving the overall stability of operation. Clamping plates 16 are provided on both sides of the interior of the rectangular frame 3. One side of the clamping plate 16 is connected to the adjusting screw 15 via a rotatable connection. One end of the adjusting screw 15 is threaded through the rectangular frame 3, providing auxiliary clamping for the other side of the magnet 2, further enhancing clamping stability and adaptability.

[0038] Compared with existing technologies, this clamping fixture has the following significant advantages: First, through the combined design of the V-shaped frame 1, contact pad 4, and rubber pad 14, the V-shaped structure naturally limits the corners of the magnet 2, achieving adaptive clamping of magnets of various specifications. This eliminates the need for frequent changes or adjustments to the stops, effectively solving the problem of cumbersome operation and low efficiency caused by the repeated disassembly of bolts and position adjustments required when changing magnet sizes in traditional fixtures, thus improving clamping efficiency and automation. Second, the contact pad 4, made of a material with a certain degree of elasticity, combined with the rubber pad 14, provides cushioning and protection during clamping, preventing damage to the magnet surface and ensuring processing quality. Third, the elastic clamping system composed of the push plate 8, abutment plate 5, compression spring 9, abutment column 10, and push cylinder 6 makes the clamping process more stable and reliable. The elastic structure can automatically adjust the clamping force according to the actual size of the magnet, avoiding stress concentration or deformation damage caused by rigid clamping, thus improving clamping stability and safety. In addition, the sliding fit between the guide rod 7 and the push plate 8, and the auxiliary clamping structure of the clamping plate 16 and the adjusting screw 15, enhance the guidance and rigidity of the clamping system, improve the clamping accuracy and repeatability, and are suitable for continuous, multi-batch production scenarios.

[0039] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A clamping fixture for machining sintered NdFeB magnets, characterized in that, include: A V-shaped frame and a rectangular frame connected to one end of the V-shaped frame, wherein the interior of the rectangular frame is interconnected with the interior of the V-shaped frame; The two inner walls of the V-shaped frame are provided with contact pads, and the two contact pads are connected to the top of the V-shaped frame through a connecting structure. An abutment plate and a push plate are provided on one side of the inside of the rectangular frame. One side of the push plate is connected to the abutment plate through an elastic structure, and the other side is connected to the side wall of the rectangular frame through a horizontal pushing structure.

2. The clamping fixture for processing sintered NdFeB magnets according to claim 1, characterized in that, The elastic structure includes two compression springs and an abutment post. One end of the compression spring is connected to the side wall of the abutment plate, and the other end is connected to the side wall of the push plate. One end of the abutment post is fixedly connected to the side wall of the abutment plate.

3. The clamping fixture for processing sintered NdFeB magnets according to claim 1, characterized in that, The connecting structure includes a connecting plate and a positioning plate. The two ends of the connecting plate are respectively connected to the ends of two contact pads. The positioning plate is connected to the top of the connecting plate and is detachably connected to the top of the V-shaped frame.

4. The clamping fixture for processing sintered NdFeB magnets according to claim 2, characterized in that, Two guide rods are connected to one side of the contact plate. One end of the guide rod slides through the push plate. Clamping plates are provided on both sides of the inside of the rectangular frame. One side of the clamping plate is rotatably connected to an adjusting screw with one end threaded through the rectangular frame.

5. The clamping fixture for processing sintered NdFeB magnets according to claim 3, characterized in that, The top of the positioning plate is provided with a positioning screw with one end threaded through the positioning plate, and one end of the positioning screw is connected to the top of the V-shaped frame.

6. The clamping fixture for processing sintered NdFeB magnets according to claim 4, characterized in that, A rubber pad is connected to one side of the contact pad, and the horizontal pushing structure includes a pushing cylinder installed on one side of the rectangular frame. The output end of the pushing cylinder is connected to one side of the pushing plate.

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