Motor rotor quick-change magnetizing clamp

Abstract

The utility model discloses a motor rotor quick change magnetizing fixture, including magnetizing subassembly, cooling assembly and support fixed component, and magnetizing subassembly is constituted by the magnetizing core of silicon steel sheet laminated and the coil of winding on it, and cooling assembly contains the cooling pipe of arrangement in magnetizing core outer ring and the liquid supply ware of liquid supply for it, and support fixed component is composed of fixed clamping plate and support ring, is used for integral fixation, and its key lies in that a plurality of inside diameter different replaceable rotor support seat are equipped with in support ring inside, and through limiting boss and fastener realize quick change and circumferential positioning, make the same fixture adapt to different diameter rotors, effectively solve the problem that traditional multiple sets of special fixture change is complicated, and the storage maintenance cost is high, and the production line efficiency is influenced, the utility model discloses have high versatility and quick change type ability, and the magnetizing production flexibility and efficiency are improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of magnetizing clamps, and in particular to a quick-change magnetizing clamp for motor rotors. Background Technology

[0002] Currently, the new energy vehicle industry is experiencing explosive growth, which directly drives the rapid expansion of the drive motor market. Among them, permanent magnet synchronous motors occupy the vast majority of the motor matching market due to their high power density and high efficiency. Against this backdrop, the industrial sector has an increasingly urgent need for high-performance and high-reliability magnetization equipment. As a key process in the manufacturing of permanent magnet motors, the performance and compatibility of magnetization equipment directly affect the magnetic properties and production efficiency of the motor.

[0003] Currently, most magnetizing fixtures on the market adopt a single design. A set of fixtures can usually only be used to fit rotors of a specific size and specification. In order to meet the production needs of multiple varieties and small batches, manufacturers usually need to equip themselves with 5 to 8 sets of special fixtures of different specifications. These fixtures are often bulky and heavy, and the replacement process is complicated and time-consuming, which seriously restricts the changeover rhythm of the production line and the overall production efficiency. Frequent fixture replacement not only increases the labor intensity of operators, but also increases the risk of magnetization quality due to misalignment. In addition, the storage and management of multiple sets of fixtures can easily cause on-site space occupation and inventory accumulation, increasing the cost of maintenance and management pressure of enterprises.

[0004] Therefore, a magnetizing fixture with rapid changeover capability, good versatility and adjustability is needed to solve the problems of insufficient production flexibility and high overall cost caused by the strong specialization of fixtures and cumbersome mold changeover process in the existing technology, so as to better adapt to the development trend of efficient and intelligent manufacturing. Utility Model Content

[0005] This invention addresses the shortcomings of existing magnetizing clamps in adapting to motor rotors of different specifications by providing a quick-change magnetizing clamp for motor rotors.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick-change magnetizing clamp for motor rotors, comprising: A magnetizing assembly for magnetizing a rotor includes a magnetizing core made of stacked silicon steel sheets and a winding coil wound around the magnetizing core. A cooling assembly for cooling the magnetizing assembly in operation includes a cooling pipe arranged on the outer ring of the magnetizing assembly and a coolant supply for supplying coolant to the cooling pipe. A support and fixing assembly for fixing and supporting the magnetizing assembly and the cooling assembly, including fixing plates respectively disposed at both ends of the cooling assembly and support rings connected to the fixing plates.

[0007] By adopting the above technical solution and integrating three major components—magnetization, cooling, and support and fixation—this fixture achieves efficient and stable magnetization of the motor rotor. The magnetization component provides the magnetization magnetic field, the cooling component effectively controls the operating temperature rise, and the support and fixation component ensures the rigidity of the overall structure. This provides a foundation for quick change and adaptation to rotors of different specifications, and solves the problems of traditional fixtures having single function, cumbersome changeover, and poor heat dissipation.

[0008] The present invention is further configured such that: the support ring is provided with a rotor support seat at the inner ring position of the magnet core; the rotor support seat is annular and there are several of them; the inner ring diameters of the several rotor support seats are different, and they are used to engage with magnetized rotors of different diameters; the central axis of the several rotor support seats with different inner ring diameters coincides with the central axis of the magnet core.

[0009] By adopting the above technical solution and setting a series of rotor support seats with coincident central axes and different inner diameters, a single fixture can quickly and accurately position and clamp rotors of various diameters, ensuring the coaxiality of the magnetization circuit and the uniformity of the magnetic field, and greatly improving the versatility of the fixture and the changeover efficiency of the production line.

[0010] The present invention is further configured such that: the support ring includes an inner support ring and an outer support ring respectively disposed on the inner ring and outer ring of the magnet core; the rotor support seat is detachably connected to the inner support ring; the inner support ring is provided with a limiting protrusion ring, which is used to restrict the rotor support seat from moving along the axial direction when the inner support ring is engaged with the rotor support seat.

[0011] By adopting the above technical solution, using a separate inner and outer support ring structure and designing the rotor support seat and the inner support ring to be detachably connected, and with the limiting protrusion ring to restrict axial movement, the rotor support seat can be quickly replaced and accurately positioned axially, thus further enhancing the quick-change function while ensuring structural stability.

[0012] The present invention is further configured such that: the limiting protrusion ring is connected to the rotor support seat by a detachable fastener, the fastener being used to restrict the rotor support seat from rotating circumferentially relative to the inner support ring.

[0013] By adopting the above technical solution, the limiting ring and the rotor support are connected by detachable fasteners, which effectively restricts the circumferential rotation of the rotor support and ensures that the rotor will not deviate angularly during magnetization, thereby ensuring the accuracy of magnetization polarity and enhancing the reliability and positioning accuracy of operation.

[0014] The present invention is further configured such that: the magnet core is formed by stacking multiple silicon steel sheets, and the shape of the silicon steel sheets matches the outer contour of the magnetizing rotor.

[0015] By adopting the above technical solution, the shape of the silicon steel sheet of the magnetizing core is matched with the outer contour of the magnetizing rotor, the magnetic circuit design is optimized, the magnetic resistance and magnetic loss are reduced, and the magnetic field acts more concentratedly on the rotor, which significantly improves the magnetization efficiency and effect.

[0016] The present invention is further configured such that: the cooling pipe is arranged in a spiral or serpentine shape on the outer ring of the magnet core, and the cooling pipe has several sections, each of which is independently equipped with a liquid supply device.

[0017] By adopting the above technical solution, and by setting the cooling pipes as multiple independent spiral or serpentine arrangements on the outer ring of the iron core, and each of them is independently equipped with a liquid supply device, the heat exchange area and cooling uniformity are greatly increased, achieving precise temperature control in zones, effectively preventing local overheating, and improving heat dissipation efficiency and system reliability.

[0018] The present invention is further configured such that: the cooling pipe is provided with inlet and outlet water ports, the magnet core is circular, and a plurality of inlet and outlet water ports of the cooling pipes wound around the magnetizing assembly are arranged in a circular array along the magnetizing assembly.

[0019] By adopting the above technical solution, and setting the inlet and outlet of several cooling pipes on the annular magnet core as a ring array, it is ensured that the coolant can flow and exchange heat evenly in the circumferential direction of the magnet core, eliminating cooling dead zones, making heat dissipation more uniform and consistent, and ensuring the stability and quality of the magnetization process.

[0020] This utility model, by adopting the above technical solution, has significant technical effects: the quick-change magnetizing fixture for motor rotors integrates a modular magnetizing core, a uniform and efficient multi-channel independent cooling system, and a quickly replaceable rotor support base into a rigid and stable support frame. This achieves high versatility, highly efficient changeover capability, and uniform and reliable high-quality magnetization. This solution fundamentally solves the core pain points of traditional fixtures, such as time-consuming changeovers on production lines, high equipment inventory costs, and poor heat dissipation affecting magnetization quality and lifespan due to their specialized nature. It significantly improves production flexibility, efficiency, and product consistency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a quick-change magnetizing clamp for motor rotors. Figure 2 This is a partial sectional view of a quick-change magnetizing clamp for motor rotors.

[0022] The parts referred to by the numbers in the above attached figures are as follows: 1. Magnetizing assembly; 2. Cooling assembly; 201. Cooling pipe; 3. Support and fixing assembly; 301. Fixing clamp; 302. Inner support ring; 303. Outer support ring; 304. Limiting protrusion ring; 4. Rotor support seat. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example: A quick-change magnetizing fixture for motor rotors includes a magnetizing assembly 1, a cooling assembly 2, and a support and fixing assembly 3.

[0025] The magnetizing assembly 1 is used to magnetize the rotor and includes a magnetizing core made of multiple stacked silicon steel sheets and a winding coil wound on the magnetizing core. The magnetizing core is annular, and the shape of its silicon steel sheets matches the outer contour of the rotor to be magnetized, so as to form a low magnetic reluctance magnetic circuit and improve magnetization efficiency. The winding coil is made of enameled copper wire uniformly wound around the circumference of the magnetizing core. When energized, it can generate a high-intensity pulsed magnetic field to magnetize the rotor placed in the inner ring of the magnetizing core.

[0026] The cooling assembly 2 is used to cool the magnetizing assembly 1 during operation. It includes cooling pipes 201 arranged around the outer ring of the magnetizing core and a coolant supply device for supplying coolant to the cooling pipes 201. The cooling pipes 201 are made of metal and are arranged in a spiral or serpentine pattern around the outer ring of the magnetizing core to increase the heat exchange area. Multiple cooling pipes 201 are provided, each independently connected to a coolant supply device, enabling independent temperature control in different areas. Each cooling pipe 201 has an independent inlet and outlet, and all the inlets and outlets of the cooling pipes 201 are arranged in a circular array around the annular magnetizing core, allowing the coolant to flow evenly across the outer surface of the magnetizing core and preventing localized overheating.

[0027] The support and fixing assembly 3 is used to fix and support the magnetizing assembly 1 and the cooling assembly 2. It includes a fixing clamp 301 respectively disposed at both ends of the cooling assembly 2 and a support ring connected to the fixing clamp 301. The support ring includes an inner support ring 302 disposed in the inner ring of the magnetizing core and an outer support ring 303 disposed in the outer ring of the magnetizing core. Both the inner support ring 302 and the outer support ring 303 are connected to the fixing clamp 301 by screws. The inner support ring 302 is provided with a rotor support seat 4 on the side facing the inner ring of the magnetizing core. The rotor support base 4 is a ring structure, and several are provided, each with a different inner ring diameter to accommodate rotors of different outer diameters. The centers of all rotor support bases 4 are located on the central axis of the magnetizing core to ensure the symmetry of the magnetic field during magnetization. Each rotor support base 4 has the same outer diameter and is detachably connected to the inner support ring 302. A limiting protrusion 304 is provided on the end face of the inner support ring 302. When the rotor support base 4 is installed in place, the limiting protrusion 304 restricts the movement of the rotor support base 4 along the axial direction. The limiting protrusion 304 is connected to the rotor support base 4 by detachable fasteners, which are bolts or pins. Their function is to restrict the circumferential rotation of the rotor support base 4 relative to the inner support ring 302, ensuring the angular positioning accuracy of the rotor during magnetization.

[0028] The modular design of the magnetizing core and the quick-replacement rotor support 4 enable a single fixture to adapt to multiple rotor specifications, significantly reducing the number of fixtures on the production line, changeover time, and storage costs. The use of multiple independently controlled cooling pipes 201 arranged in a spiral serpentine pattern, combined with the inlet and outlet design of the annular array, greatly improves cooling uniformity and heat dissipation efficiency, effectively controls magnetization temperature rise, and extends equipment lifespan. The split support ring design and the application of detachable fasteners make the replacement of core components simple and quick, greatly improving the flexibility and continuous operation capability of the production line while ensuring magnetization accuracy.

Claims

1. A quick-change magnetizing clamp for motor rotors, characterized in that, include: Magnetizing assembly (1), used to magnetize the rotor, includes a magnetizing core made of stacked silicon steel sheets and a winding coil wound around the magnetizing core; Cooling assembly (2) for cooling magnetizing assembly (1) in operation includes a cooling pipe (201) arranged on the outer ring of magnetizing assembly (1) and a liquid supply device for supplying coolant to cooling pipe (201); The support fixing component (3) is used to fix the support magnetizing component (1) and the cooling component (2), including fixing plates (301) respectively disposed at both ends of the cooling component (2) and support rings connected to the fixing plates (301).

2. The quick-change magnetizing clamp for motor rotor according to claim 1, characterized in that, The support ring is provided with a rotor support seat (4) at the inner ring position of the magnet core. The rotor support seat (4) is annular and there are several of them. The inner ring diameters of the several rotor support seats (4) are different, and they are used to engage with magnetized rotors of different diameters. The central axis of the several rotor support seats (4) with different inner ring diameters coincides with the central axis of the magnet core.

3. The quick-change magnetizing clamp for a motor rotor according to claim 2, characterized in that, The support ring includes an inner support ring (302) and an outer support ring (303) respectively disposed on the inner and outer rings of the magnet core. The rotor support seat (4) is detachably connected to the inner support ring (302). The inner support ring (302) is provided with a limiting protrusion (304). When the inner support ring (302) is engaged with the rotor support seat (4), the limiting protrusion (304) is used to restrict the rotor support seat (4) from moving along the axial direction.

4. A quick-change magnetizing clamp for a motor rotor according to claim 3, characterized in that, The limiting protrusion ring (304) is connected to the rotor support seat (4) by a detachable fastener, which is used to restrict the rotor support seat (4) from rotating circumferentially relative to the inner support ring (302).

5. A quick-change magnetizing clamp for a motor rotor according to claim 1, characterized in that, The magnetized core is made of multiple silicon steel sheets stacked together, and the shape of the silicon steel sheets matches the outer contour of the magnetized rotor.

6. A quick-change magnetizing clamp for a motor rotor according to claim 1, characterized in that, The cooling pipe (201) is arranged in a spiral or serpentine shape on the outer ring of the magnetic core. There are several cooling pipes (201), and each pipe is independently equipped with a liquid supply device.

7. A quick-change magnetizing clamp for a motor rotor according to claim 1, characterized in that, The cooling pipe (201) is provided with inlet and outlet water ports, the magnet core is circular, and several inlet and outlet water ports of the cooling pipe (201) wound around the magnetizing assembly (1) are arranged in a circular array along the magnetizing assembly (1).

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