Pulsed current orientation apparatus for a halbach magnet ring forming press and process

Abstract

The application discloses a pulse current orientation device of a Halbach magnetic ring forming press, and relates to the technical field of Halbach magnetic ring orientation, which comprises a machine body shell, an opening and closing door, a driving piece, a framework, a wire and a magnetic ring, the opening and closing door is rotationally connected to the machine body shell, the driving piece is fixedly connected to the bottom of the inner cavity of the machine body shell, the addition of the magnetization stability auxiliary assembly inner sliding sheet can enhance the moving stability of the overall work, when the position of the disc and the plug-in rod changes relatively, the sliding sheet moves in the inner cavity of the plug-in rod, and the gas is used to provide stability for the movement; the shaking and deviation of the sliding sheet in the moving process are reduced, the sliding sheet can accurately move along the predetermined track, and thus a more stable basis is provided for relevant measurement and adjustment work; and the cooperation of the sliding sheet and the vertical rod enables the plug-in rod to move vertically and stably, the friction between the plug-in rod and the through hole wall of the disc in the long-term use process can be avoided, the through hole wall is prevented from becoming large, and the cooperation precision between parts is helped to be maintained.

Description

Technical Field

[0001] This invention relates to the field of Heilbeck magnetic ring orientation technology, specifically to a pulse current orientation device and process for a Heilbeck magnetic ring forming press. Background Technology

[0002] In modern industrial production, magnetic rings are important magnetic components. Their production usually involves filling magnetic powder, such as ferrite magnetic powder or rare earth permanent magnet powder, into a specific mold. Under pressure, the magnetic powder particles approach and are squeezed together. Through mechanical interlocking, physical adsorption, and chemical bonding between the powder particles, a magnetic ring blank with a certain shape, size, and density is gradually formed, and then magnetic orientation is carried out.

[0003] Existing magnetic ring alignment technology typically involves four steps: magnetic ring preparation, equipment debugging, alignment operation, and quality inspection. In the magnetic ring preparation stage, it is essential to ensure that the dimensional accuracy, surface quality, and initial magnetic state of the magnetic ring meet the requirements. During equipment debugging, the parameters of the alignment coil and pulse current generator must be precisely set, and the control system sensors must be calibrated. In the alignment operation, the magnetic ring is placed in the alignment fixture and energized for alignment. Finally, quality inspection is used to determine whether the magnetic ring meets the standards.

[0004] However, existing technologies have many problems in practical applications. Regarding magnetic ring fixing, traditional fixing methods suffer from insufficient fixture positioning accuracy, poor equipment versatility, and easy damage to the magnetic ring during fixing. Some fixtures cannot guarantee that the magnetic ring is in the same magnetic field position each time, resulting in poor orientation repeatability. Under the magnetic force generated by pulsed current and mechanical vibration, the magnetic ring is prone to displacement or shaking, affecting the orientation effect and even causing damage. Regarding the alignment of the magnetic ring material with the center of the orientation coil, if the two are not accurately aligned, it will lead to uneven magnetic field distribution. According to the Biot-Savart law, different distances from different parts of the magnetic ring to the coil will cause differences in magnetic field strength and direction, leading to uneven orientation of magnetic domains, resulting in reduced orientation accuracy and inconsistent magnetic ring performance. Furthermore, the magnetostrictive effect caused by the non-uniform magnetic field can generate additional stress inside the magnetic ring, which in severe cases can lead to cracks, deformation, or breakage, not only damaging the magnetic ring but also affecting the normal operation of production equipment.

[0005] In summary, existing magnetic ring alignment devices suffer from poor magnetic field uniformity, insufficient equipment versatility and compatibility, low automation, high cost, and difficult maintenance. These shortcomings severely restrict the development of the magnetic ring manufacturing industry and make it difficult to meet the current market demand for high-performance, high-quality, and diversified magnetic rings. Therefore, it is urgent to develop new magnetic ring alignment technologies and devices to solve the above-mentioned technical problems.

[0006] Therefore, this invention proposes a pulse current orientation device for a Heilbeck magnetic ring forming press to solve the above problems. Summary of the Invention

[0007] In view of this, the technical problem to be solved by the present invention is to provide a pulse current orientation device for a Heilbeck magnetic ring forming press, so as to solve the problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a pulse current orientation device for a Heilbeck magnetic ring forming press, comprising: a machine body shell, an opening and closing door, a driving component, a frame, wires, and a magnetic ring. The opening and closing door is rotatably connected to the machine body shell, the driving component is fixedly connected to the bottom of the inner cavity of the machine body shell, the frame is fixedly connected to the top of the driving component, the wires are wound around the frame, and the magnetic ring is located above the frame. The device also includes: a multi-specification orientation component, an adaptability fixing component, and a magnetization stability auxiliary component. The adaptability fixing component and the magnetization stability auxiliary component are both disposed on the multi-specification orientation component.

[0009] The multi-specification orientation assembly is used to orient magnetic rings of various specifications to meet diverse production needs.

[0010] The adaptive fixing component is used to perform adaptive fixing work with the magnetic ring of the required orientation;

[0011] The magnetization stability auxiliary component is used for positional accuracy monitoring during magnetic ring orientation and for integrity protection during magnetic ring installation.

[0012] Preferably, the multi-specification orientation assembly includes a support frame fixedly connected to the top of the inner cavity of the housing, a servo drive column rotatably connected to the support frame, a disk fixedly connected to the bottom end of the servo drive column, an external ring fixedly connected to the outer ring surface of the disk, and a through hole opened on the disk.

[0013] Preferably, a column is fixedly connected to the bottom side wall of the inner cavity of the machine body shell, and a secondary plate is symmetrically fixedly connected to the column. A connecting rod is fixedly connected to both secondary plates. A sleeve is sleeved on the connecting rod, and a plug rod is fixedly connected to the sleeve. The plug rod is inserted into a through hole opened on the disc.

[0014] Preferably, the adaptability fixing component is fixedly connected with threaded cams A, B, and C at equal intervals, and a holding cavity column is threadedly connected to the threaded cam C.

[0015] Preferably, the magnetization stability auxiliary component includes an airbag fixedly connected to the inner wall of the container column, a connecting tube threaded onto the airbag, and an air pump fixedly connected to the end of the connecting tube away from the airbag.

[0016] Preferably, an N-shaped frame is fixedly connected to the disc, a vertical rod is fixedly connected to the middle of the N-shaped frame, and sliders are fixedly connected to the vertical rod at equal intervals. Scale lines are opened at equal intervals on the disc.

[0017] Preferably, a scale is fixedly connected to the column rod, and an indicator line is fixedly connected to the sub-plate.

[0018] As a preferred method, the Heilbeck magnetic ring orientation process includes the following steps: magnetic powder pressing and molding, orientation material preparation, equipment debugging, orientation operation, and quality inspection.

[0019] The magnetic powder pressing molding includes: mold cavity preparation: driving the upper pressing mold assembly, the mold cylinder assembly and the lower pressing mold assembly to their respective upper stop positions, so that the core mold is inserted into the mold cylinder, and the lower pressing mold assembly closes the lower port of the mold cylinder assembly, thereby forming an annular mold cavity in the mold cylinder assembly;

[0020] Powder filling and isobaric molding: A predetermined weight of neodymium iron boron magnetic powder is filled into the annular mold cavity. The upper mold assembly is driven down to the upper port of the mold cylinder assembly by the first linear drive device to form a seal. Then, the low-pressure pump group is started and cooperates with the first pressure regulating valve to drive the first linear drive device, the second linear drive device and the third linear drive device to move down synchronously according to the process speed ratio to complete the magnetic powder pressing.

[0021] Demolding of the blank: Start the high-pressure pump group and cooperate with the second pressure regulating valve to drive the second linear drive device to move the core mold down to the lower stop position; then drive the mold cylinder assembly down through the third linear drive device, so that the formed annular magnet blank is ejected from the mold cavity by the lower pressure mold assembly;

[0022] The preparation of the orientation material includes: using an optical microscope and a laser diameter gauge to inspect the appearance and size of the magnetic ring, rejecting products with surface cracks, missing materials, and dimensional accuracy that do not meet the design requirements, and returning the initial magnetic state of the magnetic ring to zero through a demagnetization process.

[0023] The equipment debugging includes: using a professional coil tester to calibrate the number of turns, wire diameter, and inductance parameters of the orientation coil composed of a frame and wires, and establishing a parameter file; establishing a database corresponding to the magnetic ring material and size and pulse current parameters based on experimental data; periodically calibrating the control system sensors with a high-precision standard source; and setting up a fault alarm mechanism.

[0024] The orientation operation includes: fixing the magnetic ring on a multi-specification orientation assembly; transporting the magnetic ring to the orientation position through the cooperation of the multi-specification orientation assembly and the adaptable fixing assembly; using sensor-type equipment, the position detection sensor is used to ensure the accuracy of the magnetic ring position; the slider and scale line, indicator line and dial in the mechanical magnetization stability auxiliary assembly are used to judge the position, thereby preventing power-on when the position is incorrect; using a vision and sensor system, in conjunction with the mechanical adjustment of the servo drive column, to make the center of the magnetic ring material correspond to the center of the orientation coil; controlling the ambient temperature and humidity, preheating or pre-drying the magnetic ring; and determining and automatically controlling the number of continuous orientations and the interval time according to the magnetic ring material characteristics and equipment power.

[0025] The quality inspection includes: placing the testing equipment in a shielded and vibration-damped environment, and conducting magnetic field and vibration tests on the environment before testing; establishing comprehensive testing standards and procedures, and using gaussmeters and fluxmeters to comprehensively test the magnetic field strength, magnetic flux density, and magnetic pole distribution parameters of the magnetic ring; isolating and marking unqualified magnetic rings, analyzing the causes and tracing the production process, and taking measures such as reorientation or scrapping.

[0026] Compared with the prior art, the present invention provides a pulse current orientation device for a Heilbeck magnetic ring forming press, which has the following beneficial effects:

[0027] 2. In the field of magnetic ring alignment technology, traditional equipment faces numerous problems such as poor versatility and insufficient compatibility, which seriously restricts the improvement of production efficiency and product quality. The multi-specification alignment components and adaptable fixing components are based on a disk design, which brings significant improvements to the magnetic ring alignment process and can bring the following benefits:

[0028] Enhanced versatility and compatibility: The multi-specification orientation assembly features threaded rings of different inner diameters arranged in a ripple pattern at the same position on the disc. Combined with the holding chamber column in the adaptable fixing assembly, it can easily accommodate various specifications of magnetic rings, whether small precision magnetic rings or large industrial magnetic rings. There is no need to replace the entire equipment or a large number of parts. Production tasks can be quickly switched simply by selecting the corresponding specification of the holding chamber column and the corresponding threaded ring. This greatly reduces the equipment procurement and modification costs caused by changes in magnetic ring specifications, improves the equipment's adaptability to different products, and effectively solves the problem of poor versatility of traditional orientation devices.

[0029] Enhanced magnetic ring fixation: The adaptable fixing component adopts a threaded connection, and the tight fit between the cavity column and the threaded ring provides a stable fixing environment for the magnetic ring. Under the strong magnetic field force and mechanical vibration generated by the pulse current, the magnetic ring is not prone to displacement or shaking. At the same time, the above-mentioned precise fixing method ensures that the magnetic ring is in the same magnetic field position every time, effectively improving the repeatability of the orientation process, ensuring the consistency of the magnetic ring orientation effect, and avoiding orientation deviation and product quality problems caused by insecure fixing.

[0030] Optimizing the uniformity of magnetic field distribution: The disc structure design of the multi-specification orientation assembly, combined with the precise positioning of the magnetic ring by the matching fixing component, allows the magnetic ring to accurately align with the center of the orientation coil composed of the skeleton and wires. When the magnetic ring is precisely placed on the multi-specification orientation assembly, the deviation between its center and the center of the orientation coil is controlled within a very small range. This state can effectively reduce the difference in magnetic field strength and direction, allowing the magnetic ring to be oriented in a uniform magnetic field. This helps the magnetic domains to be evenly oriented, improves the orientation accuracy, enhances the consistency of the overall performance of the magnetic ring, and avoids the additional internal stress and structural damage of the magnetic ring caused by the magnetostrictive effect due to the non-uniform magnetic field.

[0031] 3. The design of the magnetization stability auxiliary component in this invention brings the following benefits to the overall operation:

[0032] Improving the accuracy of orientation precision monitoring: By coordinating the slider with the scale line and the indicator line with the dial, the center position of the magnetic ring to be oriented and the corresponding accuracy of the orientation coil can be provided in a dual, intuitive and precise manner. Relevant personnel can use this accurate feedback information to understand the positional deviation of the magnetic ring during the orientation process, thereby effectively monitoring the orientation processing accuracy. This helps to promptly identify and correct any accuracy problems, ensuring that the orientation accuracy of the magnetic ring meets the requirements.

[0033] Facilitates timely adjustment and optimization: Precise feedback enables operators to quickly determine the relative positional relationship between the magnetic ring and the orientation coil. Once a deviation is found to exceed the allowable range, corresponding adjustment measures can be taken quickly. For example, based on the indications of the scale lines and dial, the servo drive column can be finely adjusted, thereby precisely adjusting the position of the magnetic ring on the peripheral ring so that its center better corresponds with the orientation coil, optimizing the orientation process and improving the performance consistency of the magnetic ring.

[0034] Improving overall work efficiency and product quality: Accurate precision monitoring and timely adjustment and optimization reduce repetitive operations and defect rates caused by inaccurate magnetic ring positions, saving time and costs, improving overall production efficiency, thereby ensuring more neat and stable orientation of magnetic domains, improving the performance consistency and quality stability of magnetic rings, reducing product performance differences caused by uneven magnetic field distribution due to positional deviations, and improving the overall quality level of products.

[0035] 4. By adding a slider to the magnetization stability auxiliary component, this invention can bring the following benefits to the overall operation:

[0036] Enhanced movement stability: When the relative positions of the disk and the connector rod change, the slider moves within the connector rod cavity, and gas is used to provide stability for its movement; this helps reduce the wobbling and offset of the slider during movement, ensuring that it can move accurately along the predetermined trajectory, thus providing a more stable basis for related measurement and adjustment work.

[0037] Protecting the through hole of the disc: The cooperation between the slider and the vertical rod enables the plug rod to move vertically and stably, avoiding the through hole wall from enlarging due to friction between the plug rod and the disc through hole wall during long-term use; it helps to maintain the fitting accuracy between the disc and the plug rod, and prevents the disc and the plug rod from being in a non-perpendicular state when working due to the enlargement of the through hole wall, thereby protecting the structural stability of the entire orientation device.

[0038] Improved Orientation Accuracy: By preventing the disk and the plug rod from being non-perpendicular, the orientation accuracy is effectively avoided, ensuring that the magnetic ring is in an accurate position during the orientation process and is subjected to a uniform and stable magnetic field, thereby improving the orientation accuracy of the magnetic ring and ensuring the consistency and stability of product quality.

[0039] Extending equipment lifespan: Reduced friction between the connector rod and the through hole wall of the disc reduces component wear, protecting not only the through hole on the disc but also extending the lifespan of the connector rod and the entire orientation device. This helps reduce equipment maintenance costs and replacement frequency, improving overall equipment operating efficiency and economy.

[0040] 5. The flexible material airbag design of this invention brings the following advantages to the overall operation:

[0041] Protecting the surface of the magnetic ring: During the placement of the magnetic ring, the flexible material airbag can effectively buffer the collision between the magnetic ring and the holding chamber column, preventing the magnetic ring surface from being bumped, scratched or missing material, thereby ensuring the appearance quality and integrity of the magnetic ring and helping to improve the product yield.

[0042] Improved magnetic ring fixing effect: The airbag is used to fix the magnetic ring. It can adaptively adjust according to the shape and size of the magnetic ring, provide uniform pressure, and keep the magnetic ring in a stable position during the alignment process. This reduces the risk of decreased alignment accuracy caused by magnetic ring shaking or displacement, thereby improving the alignment quality and performance consistency of the magnetic ring.

[0043] Enhanced device versatility: Because the airbag can adapt to magnetic rings of different specifications and shapes, it not only effectively fixes the magnetic rings but also protects them during placement. This makes the device more applicable to various types of magnetic rings, enhancing the versatility and compatibility of the entire orientation device and reducing the cost of equipment replacement and adjustment.

[0044] Reduced subsequent processing steps: The surface of the magnetic ring is well protected, avoiding surface defects caused by bumps and other issues, thereby reducing the need for subsequent repair or treatment of the magnetic ring surface, saving time and costs, and improving overall production efficiency. Attached Figure Description

[0045] Figure 1 This is a diagram of the main body of the invention;

[0046] Figure 2 This is a structural diagram of the body shell of the present invention after being cut open;

[0047] Figure 3 This is a diagram showing the working state of the multi-specification orientation component of the present invention;

[0048] Figure 4 The diagram shows the relevant structures of the external ring, threaded convex ring A, threaded convex ring B, holding cavity column, and magnetic ring in this invention.

[0049] Figure 5 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0050] Figure 6 For the present invention Figure 2 Enlarged view of the structure at point B in the middle;

[0051] Figure 7 For the present invention Figure 2 Enlarged view of the structure at point C;

[0052] Figure 8 This is a front view of the body shell after being cut in this invention;

[0053] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point D;

[0054] Figure 10 This is a structural disassembly diagram of the present invention;

[0055] Figure 11 This is a diagram showing the working state of the adaptability fixing component and the magnetization stability auxiliary component in this invention;

[0056] Figure 12 The diagram shows the relevant structures of the disk, plug rod, slider, and vertical rod in this invention.

[0057] In the picture:

[0058] 1. Housing; 2. Door; 3. Drive mechanism; 4. Frame; 5. Wires; 6. Magnetic ring;

[0059] 7. Multi-specification orientation components; 701. Support frame; 702. Servo drive column; 703. Disc; 704. External ring; 705. Column; 706. Sub-piece; 707. Connecting rod; 708. Sleeve; 709. Insert rod;

[0060] 8. Adaptive fixing components; 801. Threaded ring A; 802. Threaded ring B; 803. Threaded ring C; 804. Reservoir column;

[0061] 9. Magnetization stability auxiliary components; 901. Airbag; 902. Connecting pipe; 903. Air pump; 904. N-shaped frame; 905. Vertical rod; 906. Slider; 907. Scale line; 908. Indicator line; 909. Dial. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0064] Please refer to Figures 1 to 5 , Figures 8 to 11 As shown:

[0065] To address the problems mentioned in the technical solutions, this application provides a pulse current orientation device for a Heilbeck magnetic ring forming press, comprising: a housing 1, an opening / closing door 2, a drive component 3, a frame 4, a wire 5, and a magnetic ring 6. The opening / closing door 2 is rotatably connected to the housing 1, the drive component 3 is fixedly connected to the bottom of the inner cavity of the housing 1, the frame 4 is fixedly connected to the top of the drive component 3, the wire 5 is wound around the frame 4, and the magnetic ring 6 is located above the frame 4. The device also includes: a multi-specification orientation component 7, an adaptability fixing component 8, and a magnetization stability auxiliary component 9. The adaptability fixing component 8 and the magnetization stability auxiliary component 9 are both disposed on the multi-specification orientation component 7.

[0066] The multi-specification orientation assembly 7 is used to orient magnetic rings 6 of various specifications to meet diverse production needs.

[0067] The adaptability fixing component 8 is used to perform adaptability fixing work with the magnetic ring 6 of the required orientation.

[0068] The multi-specification orientation component 7 includes a support frame 701 fixedly connected to the top of the inner cavity of the housing 1. A servo drive column 702 is rotatably connected to the support frame 701. A disc 703 is fixedly connected to the bottom end of the servo drive column 702. An outer ring 704 is fixedly connected to the outer ring surface of the disc 703. A through hole is opened on the disc 703. A column rod 705 is fixedly connected to the bottom side wall of the inner cavity of the housing 1. Sub-pieces 706 are symmetrically fixedly connected to the column rod 705. A connecting rod 707 is fixedly connected to both sub-pieces 706. A sleeve 708 is sleeved on the connecting rod 707. A plug-in rod 709 is fixedly connected to the sleeve 708. The plug-in rod 709 is inserted into the through hole opened on the disc 703. Threaded rings A801, B802, and C803 are fixedly connected at equal intervals on the adaptability fixing component 8. A holding cavity column 804 is threadedly connected to the threaded ring C803.

[0069] in:

[0070] The wire 5 can be wound around the frame 4 to form an orientation coil.

[0071] The multi-specification orientation assembly 7 is used to orient magnetic rings 6 of various specifications to meet diverse production needs.

[0072] The disc 703 has a through hole that is compatible with the plug rod 709.

[0073] Sleeve 708 is compatible with connecting rod 707.

[0074] The adaptability fixing component 8 is used to perform adaptability fixing work with the magnetic ring 6 of the required orientation.

[0075] The inner diameters of threaded rings A801, B802, and C803, from largest to smallest, are as follows: threaded ring A801, threaded ring B802, and threaded ring C803.

[0076] The container column 804 can be adapted to the specifications of the magnetic ring 6. The replaced container column 804 can be threadedly connected to one of the threaded rings A801, B802, and C803.

[0077] A further embodiment: Please refer to Figure 2 , Figures 5 to 8 , Figure 12 As shown:

[0078] The magnetization stability auxiliary component 9 is used for positional accuracy monitoring during the orientation of the magnetic ring 6 and for integrity protection during the installation of the magnetic ring 6. The magnetization stability auxiliary component 9 includes an airbag 901 fixedly connected to the inner wall of the holding cavity column 804. A connecting tube 902 is threadedly fixed to the airbag 901. An air pump 903 is fixedly connected to the end of the connecting tube 902 away from the airbag 901. An N-shaped frame 904 is fixedly connected to the disc 703. A vertical rod 905 is fixedly connected to the middle of the N-shaped frame 904. Sliding plates 906 are fixedly connected to the vertical rod 905 at equal intervals. Scale lines 907 are equidistantly opened on the disc 703. A scale dial 909 is fixedly connected to the column 705. An indicator line 908 is fixedly connected to the sub-plate 706.

[0079] in:

[0080] The magnetization stability auxiliary component 9 is used for positional accuracy monitoring when the magnetic ring 6 is oriented and for integrity protection when the magnetic ring 6 is installed.

[0081] In addition to fixing the magnetic ring 6, the airbag 901 can also be used to prevent the magnetic ring 6 from colliding with the container column 804 during placement, thereby ensuring that the surface of the magnetic ring 6 is in good condition and there is no missing material.

[0082] In addition to assisting in reading, the slider 906 can also be used in conjunction with the gas inside the plug rod 709 when the relative positions of the disk 703 and the plug rod 709 change. When it moves within the cavity of the plug rod 709, the presence of gas provides stability for its movement. Essentially, the movement of the slider 906 is hindered, but the cooperation between the slider 906 and the vertical rod 905 can ensure the stable vertical movement of the plug rod 709. This prevents the plug rod 709 from becoming enlarged due to friction during long-term use, which could lead to the disk 703 and the plug rod 709 being in a non-perpendicular state during operation, indirectly causing damage to the orientation accuracy.

[0083] The scale line 907 is opened on the plug rod 709. During the operation of the multi-specification orientation assembly 7, the relative position of the plug rod 709 and the disk 703 will change. Relevant personnel can indirectly judge whether the rotation degree of the disk 703 can guarantee that the center of the magnetic ring 6 located in the holding cavity column 804 is on the same vertical line as the skeleton 4 that is about to be oriented by observing the overlapping position of the slider 906 and the scale line 907.

[0084] The indicator line 908 is used in conjunction with the dial 909 and is also used by relevant personnel to observe and determine whether the rotation degree of the disc 703 is normal.

[0085] A further embodiment:

[0086] The Heilbeck magnetic ring orientation process includes the following steps: magnetic powder pressing and molding, orientation material preparation, equipment debugging, orientation operation, and quality inspection.

[0087] Magnetic powder pressing molding includes: mold cavity preparation: driving the upper mold assembly, mold cylinder assembly and lower mold assembly to their respective upper stop positions, so that the core mold is inserted into the mold cylinder, and the lower mold assembly closes the lower port of the mold cylinder assembly, thereby forming an annular mold cavity in the mold cylinder assembly.

[0088] Powder filling and isobaric molding: A predetermined weight of neodymium iron boron magnetic powder is filled into the annular mold cavity. The upper mold assembly is driven down to the upper port of the mold cylinder assembly by the first linear drive device and a seal is formed. Then, the low-pressure pump group is started and cooperates with the first pressure regulating valve to drive the first linear drive device, the second linear drive device and the third linear drive device to descend synchronously according to the process speed ratio to complete the magnetic powder pressing.

[0089] Demolding of blank: Start the high-pressure pump group and cooperate with the second pressure regulating valve to drive the second linear drive device to move the core mold down to the lower stop position; then drive the mold cylinder assembly down through the third linear drive device, so that the formed ring magnet blank is ejected from the mold cavity by the lower pressure mold assembly.

[0090] The preparation of orientation materials includes: using an optical microscope and a laser diameter gauge to inspect the appearance and size of the magnetic ring 6, rejecting products with surface cracks, missing materials, and dimensional accuracy that do not meet the design requirements, and returning the initial magnetic state of the magnetic ring 6 to zero through a demagnetization process.

[0091] Equipment debugging includes: using a professional coil tester to calibrate the number of turns, wire diameter, and inductance parameters of the orientation coil composed of the skeleton 4 and the wire 5, and establishing a parameter file; establishing a database corresponding to the material and size of the magnetic ring 6 and the pulse current parameters based on experimental data; periodically calibrating the control system sensors with a high-precision standard source; and setting up a fault alarm mechanism.

[0092] The orientation operation includes: fixing the magnetic ring 6 on the multi-specification orientation assembly 7; conveying the magnetic ring 6 to the orientation position through the cooperation of the multi-specification orientation assembly 7 and the adaptability fixing assembly 8; using sensor-type equipment to assist in ensuring the accurate position of the magnetic ring 6 through a position detection sensor; and using the mechanical magnetization stability auxiliary assembly 9 to judge the position with the slider 906 and the scale line 907, and the indicator line 908 and the dial 909, so as to prevent power-on when the position is incorrect; using a vision and sensor system, in conjunction with the mechanical adjustment of the servo drive column 702, to make the material center of the magnetic ring 6 correspond to the center of the orientation coil; controlling the ambient temperature and humidity to preheat or pre-dry the magnetic ring 6; and determining and automatically controlling the number of consecutive orientations and the interval time according to the material characteristics of the magnetic ring 6 and the power of the equipment.

[0093] Quality inspection includes: placing the testing equipment in a shielded and vibration-damped environment, and conducting magnetic field and vibration tests on the environment before testing; establishing comprehensive testing standards and procedures, and using gaussmeters and fluxmeters to comprehensively test the magnetic field strength, magnetic flux density, and magnetic pole distribution parameters of magnetic ring 6; isolating unqualified magnetic ring 6, analyzing the causes and tracing the production process, and taking measures such as reorientation or scrapping.

[0094] The working principle of all the content in the above embodiments is as follows:

[0095] In the initial state:

[0096] The holding chamber column 804 is not threaded to any one of the threaded rings in the threaded ring group consisting of threaded rings A801, B802, and C803. The magnetic ring 6 is not placed on the holding chamber column 804, and the airbag 901 is not inflated.

[0097] The following describes the working process of the multi-specification orientation component 7 and the adaptability fixing component 8:

[0098] In use, a material component pressed into a ring by magnetic powder is placed in a suitable holding chamber column 804. Then, the holding chamber column 804 is threadedly connected to a suitable convex ring in a threaded convex ring group consisting of threaded convex rings A801, B802, and C803. Then, the connecting tube 902 on the airbag 901 is connected to the airbag 901 in the holding chamber column 804. Then, the airbag 901 is inflated. Furthermore, the magnetic ring 6 is placed in the holding chamber column 804 with the airbag 901.

[0099] Furthermore, the servo drive column 702 on the support frame 701 is activated by the main controller of the device. Under control, the servo drive column 702 will rotate the disk 703 below it. As the disk 703 rotates, the disk 703 will rotate the peripheral ring 704 and the magnetic ring 6 in the adaptive fixing component 8 on it at an angle that meets the process requirements. After the rotation is completed, the center of the magnetic ring 6 in the holding cavity column 804 will be on the same vertical line as the orientation coil composed of the skeleton 4 and the wire 5 on the driving component 3 below.

[0100] Furthermore, as the disc 703 rotates, the through hole on the disc 703 will move relative to the insertion rod 709 inserted therein. Specifically, since the through hole is located off-center from the disc 703, as the disc 703 rotates, the disc 703 will cause the insertion rod 709 to move up and down on the through hole on the disc 703 through the through hole and with the assistance of the column rod 705, the sub-piece 706, the connecting rod 707, and the sleeve 708. During this process, the sub-piece 706, which is fixedly connected to the connecting rod 707, will also rotate on the column rod 705.

[0101] Furthermore, in the field of magnetic ring 6 orientation technology, traditional equipment faces numerous problems such as poor versatility and insufficient compatibility, which seriously restricts the improvement of production efficiency and product quality. The multi-specification orientation component 7 and the adaptability fixing component 8, based on the design of the disc 703, bring significant improvements to the magnetic ring 6 orientation operation, and can bring the following benefits: improved versatility and compatibility; the multi-specification orientation component 7 has threaded protrusions of different inner diameters distributed in a ripple pattern at the same position on the disc 703, which, together with the holding cavity column 804 in the adaptability fixing component 8, can easily adapt to various specifications of magnetic ring 6. Whether it is a small-sized precision magnetic ring 6 or a large-sized industrial magnetic ring 6, there is no need to replace the entire equipment or a large number of parts. Production tasks can be quickly switched simply by selecting the corresponding specification of the holding cavity column 804 and the corresponding threaded protrusion; it greatly reduces the equipment procurement and modification costs caused by changes in the specifications of magnetic ring 6, improves the adaptability of the equipment to different products, and effectively solves the problem of poor versatility of traditional orientation devices.

[0102] Enhanced fixing effect of magnetic ring 6: The adaptable fixing component 8 adopts a threaded connection, and the tight fit between the cavity column 804 and the threaded convex ring provides a stable fixing environment for magnetic ring 6. Under the strong magnetic field force and mechanical vibration generated by the pulse current, magnetic ring 6 is not easy to displace or shake. At the same time, the above-mentioned precise fixing method can ensure that magnetic ring 6 is in the same magnetic field position every time, effectively improving the repeatability of the orientation process, ensuring the consistency of the orientation effect of magnetic ring 6, and avoiding orientation deviation and product quality problems caused by insecure fixing.

[0103] Please refer to the above work process. Figures 1 to 5 , Figures 8 to 11 .

[0104] The following is the working process of magnetization stability auxiliary component 9:

[0105] Furthermore, when the insertion rod 709 moves up and down in the through hole of the disc 703, the vertical rod 905 on the N-shaped frame 904 fixed on the disc 703 remains in a constant relative position. At this time, the slider 906 on the column rod 705 will move within the insertion rod 709. Relevant personnel can observe the position of the slider 906 and the scale line 907 through the transparent insertion rod 709. That is, by indirectly observing the overlapping position of the slider 906 and the scale line 907, it can be determined whether the rotation degree of the disc 703 can ensure that the center of the magnetic ring 6 located in the holding cavity column 804 is on the same vertical line as the skeleton 4 that is about to be oriented.

[0106] Furthermore, under the aforementioned actions, the dial 909 fixedly connected to the column rod 705 can also work with the indicator line 908 on the sub-plate 706 to indirectly determine whether the rotation degree of the disc 703 meets the rotation degree requirements and whether it meets the processing requirements.

[0107] Furthermore, the addition of the slider 906 within the magnetization stability auxiliary component 9 brings the following benefits to the overall operation: enhanced movement stability; when the relative positions of the disk 703 and the insertion rod 709 change, the slider 906 moves within the cavity of the insertion rod 709, utilizing gas to provide stability for its movement; it helps reduce the wobbling and offset of the slider 906 during movement, ensuring that it can move accurately along the predetermined trajectory, thereby providing a more stable basis for related measurement and adjustment work.

[0108] Protecting the through hole of the disc 703: The cooperation between the slider 906 and the vertical rod 905 enables the insertion rod 709 to move vertically and stably, preventing the through hole wall of the insertion rod 709 from becoming larger due to friction with the through hole wall of the disc 703 during long-term use; it helps to maintain the fitting accuracy between the disc 703 and the insertion rod 709, and prevents the disc 703 and the insertion rod 709 from being in a non-perpendicular state during operation due to the enlargement of the through hole wall, thereby protecting the structural stability of the entire orientation device.

[0109] Improved orientation accuracy: By preventing the disc 703 from being non-perpendicular to the plug rod 709, the orientation accuracy is effectively avoided, ensuring that the magnetic ring 6 is in an accurate position during the orientation process and is subjected to a uniform and stable magnetic field, thereby improving the orientation accuracy of the magnetic ring 6 and ensuring the consistency and stability of product quality.

[0110] Extending equipment lifespan: Reduced friction between the plug rod 709 and the through hole wall of the disc 703 reduces the wear of components, protecting not only the through hole on the disc 703 but also extending the lifespan of the plug rod 709 and the entire orientation device. This helps reduce equipment maintenance costs and replacement frequency, and improves the overall operating efficiency and economy of the equipment.

[0111] Furthermore, the design of the airbag 901 brings the following benefits to the overall operation: protecting the surface of the magnetic ring 6; during the placement of the magnetic ring 6, the airbag 901 can effectively buffer the collision between the magnetic ring 6 and the holding chamber column 804, preventing the magnetic ring 6 from being bumped, scratched or missing material, thereby ensuring the appearance quality and integrity of the magnetic ring 6 and helping to improve the product yield.

[0112] Improve the fixing effect of magnetic ring 6: The airbag 901 is used to fix the magnetic ring 6. It can adaptively adjust according to the shape and size of the magnetic ring 6, provide uniform pressure, and keep the magnetic ring 6 in a stable position during the orientation process. This reduces the risk of orientation accuracy loss due to the shaking or displacement of the magnetic ring 6, thereby improving the orientation quality and performance consistency of the magnetic ring 6.

[0113] Enhanced device versatility: Since the airbag 901 can adapt to magnetic rings 6 of different specifications and shapes, it can not only effectively fix the magnetic rings 6, but also protect them during placement. This makes the device more applicable to various types of magnetic rings 6, enhancing the versatility and compatibility of the entire orientation device and reducing the cost of equipment replacement and adjustment.

[0114] Reduced subsequent processing steps: The surface of the magnetic ring 6 is well protected, avoiding surface defects caused by bumps and other issues, thereby reducing the need for subsequent repair or treatment of the magnetic ring 6 surface, saving time and costs, and improving overall production efficiency.

[0115] Please refer to the above work process. Figure 2 , Figures 5 to 8 , Figure 12 .

[0116] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0117] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulse current orientation device for a Heilbeck magnetic ring forming press, comprising: The machine body shell (1), opening and closing door (2), driving component (3), frame (4), wire (5), and magnetic ring (6) are rotatably connected to the machine body shell (1), the driving component (3) is fixedly connected to the bottom of the inner cavity of the machine body shell (1), the frame (4) is fixedly connected to the top of the driving component (3), the wire (5) is wound around the frame (4), and the magnetic ring (6) is located above the frame (4). The machine body shell (1), opening and closing door (2), ...) is characterized by further including: multi-specification orientation component (7), adaptability fixing component (8), and magnetization stability auxiliary component (9). The adaptability fixing component (8) and magnetization stability auxiliary component (9) are both disposed on the multi-specification orientation component (7). The multi-specification orientation component (7) is used to orient magnetic rings (6) of various specifications to meet diverse production needs; The multi-specification orientation component (7) includes a support frame (701) fixedly connected to the top of the inner cavity of the housing (1), a servo drive column (702) rotatably connected to the support frame (701), a disk (703) fixedly connected to the bottom end of the servo drive column (702), an outer ring (704) fixedly connected to the outer ring surface of the disk (703), and a through hole opened on the disk (703); A column rod (705) is fixedly connected to the bottom side wall of the inner cavity of the body shell (1). A secondary piece (706) is symmetrically fixedly connected to the column rod (705). A connecting rod (707) is fixedly connected to both secondary pieces (706). A sleeve (708) is sleeved on the connecting rod (707). A plug rod (709) is fixedly connected to the sleeve (708). The plug rod (709) is inserted into a through hole opened on the disc (703). The adaptive fixing component (8) is used to perform adaptive fixing work with the magnetic ring (6) of the required orientation; The adaptability fixing component (8) is fixedly connected at equal intervals with threaded cams A (801), B (802), and C (803), and a holding cavity column (804) is threadedly connected to the threaded cam C (803). The magnetization stability auxiliary component (9) is used for positional accuracy monitoring when the magnetic ring (6) is oriented and for integrity protection when the magnetic ring (6) is installed. The magnetization stability auxiliary component (9) includes an air bladder (901) fixedly connected to the inner wall of the holding chamber column (804), a connecting tube (902) is threadedly fixed to the air bladder (901), and an air pump (903) is fixedly connected to one end of the connecting tube (902) away from the air bladder (901). An N-shaped frame (904) is fixedly connected to the disc (703), a vertical rod (905) is fixedly connected to the middle of the N-shaped frame (904), and sliders (906) are fixedly connected at equal intervals on the vertical rod (905). Scale lines (907) are opened at equal intervals on the disc (703). A dial (909) is fixedly connected to the column (705), and an indicator line (908) is fixedly connected to the sub-plate (706).

2. The Helbeck magnetic ring alignment process based on the pulse current alignment equipment of the Helbeck magnetic ring forming press according to claim 1, characterized in that: The process includes the following steps: magnetic powder pressing and molding, preparation of orientation materials, equipment debugging, orientation operation, and quality inspection. The magnetic powder pressing molding includes: mold cavity preparation: driving the upper pressing mold assembly, the mold cylinder assembly and the lower pressing mold assembly to their respective upper stop positions, so that the core mold is inserted into the mold cylinder, and the lower pressing mold assembly closes the lower port of the mold cylinder assembly, thereby forming an annular mold cavity in the mold cylinder assembly; Powder filling and isobaric molding: A predetermined weight of neodymium iron boron magnetic powder is filled into the annular mold cavity. The upper mold assembly is driven down to the upper port of the mold cylinder assembly by the first linear drive device to form a seal. Then, the low-pressure pump group is started and cooperates with the first pressure regulating valve to drive the first linear drive device, the second linear drive device and the third linear drive device to move down synchronously according to the process speed ratio to complete the magnetic powder pressing. Demolding of the blank: Start the high-pressure pump group and cooperate with the second pressure regulating valve to drive the second linear drive device to move the core mold down to the lower stop position; then drive the mold cylinder assembly down through the third linear drive device, so that the formed annular magnet blank is ejected from the mold cavity by the lower pressure mold assembly; The preparation of the orientation material includes: using an optical microscope and a laser diameter gauge to inspect the appearance and size of the magnetic ring (6), rejecting products with surface cracks, missing materials and dimensional accuracy that do not meet the design requirements, and returning the initial magnetic state of the magnetic ring (6) to zero through a demagnetization process; The equipment debugging includes: using a professional coil tester to calibrate the number of turns, wire diameter, and inductance parameters of the orientation coil composed of the skeleton (4) and wire (5), and establishing a parameter file; establishing a database corresponding to the material and size of the magnetic ring (6) and the pulse current parameters based on experimental data; periodically calibrating the control system sensor with a high-precision standard source; and setting up a fault alarm mechanism.

3. The Heilbeck magnetic ring orientation process according to claim 2, characterized in that: The orientation operation includes: fixing the magnetic ring (6) on the multi-specification orientation assembly (7); conveying the magnetic ring (6) to the orientation position through the cooperation of the multi-specification orientation assembly (7) and the adaptability fixing assembly (8); using a sensor-type device to assist in ensuring the accurate position of the magnetic ring (6) through a position detection sensor; using a mechanical magnetization stability auxiliary assembly (9) with the slider (906) and scale line (907), and the indicator line (908) and dial (909) to judge the position, thereby preventing power-on when the position is incorrect; using a vision and sensor system, and cooperating with the mechanical adjustment of the servo drive column (702) to make the material center of the magnetic ring (6) correspond to the center of the orientation coil; controlling the ambient temperature and humidity to preheat or pre-dry the magnetic ring (6); and determining and automatically controlling the number of consecutive orientations and the interval time according to the material characteristics of the magnetic ring (6) and the power of the equipment.

4. The Heilbeck magnetic ring orientation process according to claim 3, characterized in that: The quality inspection includes: placing the inspection equipment in a shielded and vibration-damped environment, and conducting magnetic field and vibration tests on the environment before inspection; developing comprehensive inspection standards and procedures, and using gaussmeters and fluxmeters to comprehensively inspect the magnetic field strength, magnetic flux density, and magnetic pole distribution parameters of the magnetic ring (6); identifying and isolating unqualified magnetic rings (6), analyzing the causes and tracing the production process, and taking measures such as reorientation or scrapping.

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