Rotor bearing pressing tool

Abstract

The utility model relates to a tool for pressing a bearing on a rotor. The tool comprises a rack assembly, and a stamping mechanism and a bearing feeding mechanism are fixed to the upper end of the rack assembly. A driving assembly in the stamping mechanism comprises a base, a lower die fixing plate, a middle die fixing plate, an upper die fixing plate, a stamping air cylinder, a guide column, a stamping connecting piece, a limiting rod and the like, power is provided for a stamping die assembly, and stable operation of the stamping die assembly is guaranteed. The punching die assembly is composed of a lower die base, a material bearing base, a guide rod, an upper die base, an upper punch, a lower punch, a supporting table, a guide plate and the like. Accurate press fitting of bearings at the upper end and the lower end of the rotor can be achieved. The upper punch is provided with a motor shaft groove, the lower punch and the supporting table are provided with bearing grooves, all the parts work cooperatively, and the press fitting precision and efficiency are guaranteed. The tool effectively solves the problems that a traditional tool cannot press two bearings at the same time and press-fitting precision is insufficient, has the advantages of being reasonable in structure, easy and convenient to operate, high in production efficiency, reliable in product quality and the like, and is suitable for the field of motor rotor production.

Description

Technical Field

[0001] This utility model relates to the field of stamping manufacturing, and in particular to a rotor bearing pressing tool. Background Technology

[0002] In the manufacturing process of motor rotors, accurately pressing bearings onto the rotor is a crucial step. Traditional bearing pressing molds have significant limitations. Firstly, since the bearings of the motor rotor need to be pressed onto the upper and lower ends of the rotor separately, traditional molds typically lack the capability to press two bearings simultaneously, requiring them to be pressed one at a time. This undoubtedly increases production time and cost significantly, severely impacting production efficiency. Secondly, traditional molds struggle to achieve precise control in pressing accuracy. During the pressing process, issues such as unreasonable mold structure design and inaccurate positioning often lead to bearing placement deviations, failing to meet high-precision production requirements. This not only affects the overall performance of the motor rotor but may also cause problems such as vibration and excessive noise during motor operation, reducing the motor's lifespan and stability. As the motor industry's demands for product quality and production efficiency continue to rise, traditional bearing pressing molds are no longer adequate to meet the industry's evolving needs, urgently requiring the development of a new tooling capable of simultaneously and accurately pressing two bearings. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model aims to provide a rotor bearing pressing fixture that solves the problems existing in the prior art. The upper punch features a specially designed motor shaft groove that matches the motor shaft, enabling precise positioning of the motor shaft during pressing and ensuring its stability, thus laying the foundation for accurate subsequent bearing installation. The lower punch and the upper part of the support table are equipped with bearing grooves that conform to the shape of the bearing, stably supporting the bearing and guiding it smoothly onto the rotor. Through this carefully designed structure, the upper and lower punches can operate simultaneously, completing the pressing of two sets of bearings at both ends of the rotor shaft in one go. This innovation overcomes the limitation of traditional molds that cannot press two bearings simultaneously, greatly improving production efficiency.

[0005] Furthermore, the upper and lower punches are coaxially aligned, and with guide rods, guide plates, and other guiding components, the precision of movement during the stamping process is ensured. This allows the bearings to be precisely pressed into the predetermined position on the rotor shaft, effectively avoiding product quality issues caused by positional deviations. This design, which can simultaneously stamp two sets of bearings while ensuring precise positioning, significantly improves product quality and production efficiency, representing a major innovation in traditional bearing pressing tooling.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotor bearing pressing fixture, comprising a frame assembly, wherein a stamping mechanism and a bearing feeding mechanism are fixed at the upper end of the frame assembly, the stamping mechanism includes a fixed frame, a driving assembly is provided at the upper end of the fixed frame, and a die assembly is provided in the middle of the fixed frame;

[0008] The die assembly includes a lower die base, a material support seat fixed at the upper end of the lower die base, three sets of guide rods movably connected to the inner side of the material support seat, an upper die base fixed at the upper end of the guide rods, an upper punch fixed at the lower end of the upper die base, a lower punch embedded in the upper part of the lower die base, a support platform embedded inside the lower punch, and a guide plate fixed between the lower die base and the upper die base.

[0009] Preferably, the upper punch has a through-hole motor shaft groove inside.

[0010] Preferably, the upper part of the lower punch and the support platform is provided with a bearing groove.

[0011] Preferably, the upper part of the guide plate is fixedly connected to the upper mold base, and the lower end of the guide plate is provided with a waist-shaped groove and is movably connected to the lower mold base.

[0012] Preferably, the upper punch and the lower punch are coaxial.

[0013] Preferably, the drive assembly includes a base, and the top of the base is provided with a lower mold fixing plate, a middle mold fixing plate and an upper mold fixing plate in sequence. A stamping cylinder is fixed on the upper part of the upper mold fixing plate, and a guide post is provided through the lower mold fixing plate and the upper mold fixing plate.

[0014] Preferably, a stamping connector is fixed to the end of the output shaft of the stamping cylinder, and the stamping connector is fixedly connected to the middle die fixing plate.

[0015] Preferably, the punching die assembly is fixedly connected to the lower die fixing plate.

[0016] Preferably, a limit rod is provided between the lower mold fixing plate and the middle mold fixing plate.

[0017] (III) Beneficial Effects

[0018] The purpose of this utility model is to provide a rotor bearing pressing fixture. This patent, with its innovative upper and lower punch design in the die assembly, exhibits many significant advantages. In terms of production efficiency, traditional dies struggle to simultaneously press two sets of bearings, while this patent achieves a breakthrough, enabling the simultaneous pressing of two sets of bearings. This feature transforms the motor rotor bearing pressing process from individual operations to one-time forming, greatly shortening the processing time for a single rotor, significantly improving overall production efficiency, and providing strong support for enterprises to achieve large-scale production.

[0019] In terms of product quality assurance, the upper and lower punches not only operate simultaneously but also possess a high degree of precision. The motor shaft groove of the upper punch is adapted to the motor shaft, and the bearing grooves of the lower punch and support table fit the bearings. Furthermore, the upper and lower punches are coaxially positioned, and with the help of guide rods, guide plates, and other guiding components, precise and error-free movement is ensured during the stamping process. This allows the bearings to be accurately fixed in the correct position on the rotor shaft, effectively avoiding product quality problems caused by positional deviations and significantly improving the stability and reliability of product quality. From a business perspective, the increased production efficiency and improved product quality help reduce production costs, enhance the company's competitiveness in the market, and bring a highly efficient and high-quality new solution to the field of motor rotor manufacturing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the entire present invention.

[0021] Figure 2 This is a schematic diagram of the stamping mechanism in this utility model.

[0022] Figure 3 This is a schematic diagram of the punching die assembly in this utility model.

[0023] Figure 4 This is a cross-sectional view of the punching die assembly in this utility model.

[0024] Figure 5 In this utility model Figure 4 Enlarged view of part A of the die assembly.

[0025] Figure 6 This is a rear view of the punching die assembly in this utility model.

[0026] In the diagram: 1-Frame assembly, 2-Stamping mechanism, 3-Bearing feeding mechanism, 21-Fixed frame, 22-Drive assembly, 23-Stamping die assembly, 221-Base, 222-Lower die fixing plate, 223-Middle die fixing plate, 224-Upper die fixing plate, 225-Stamping cylinder, 226-Guide post, 227-Stamping connector, 228-Limit rod, 231-Lower die base, 232-Material support, 233-Guide rod, 234-Upper die base, 235-Upper punch, 236-Lower punch, 237-Support platform, 238-Guide plate, 2351-Motor shaft groove, 2361-Bearing groove, 2381-Oval groove, M-Workpiece. Detailed Implementation

[0027] The following will refer to the appendix in the example of this utility model. Figures 1-6The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] A rotor bearing pressing fixture includes a frame assembly 1. A stamping mechanism 2 and a bearing feeding mechanism 3 are fixed at the upper end of the frame assembly 1. The stamping mechanism 2 includes a fixed frame 21. A drive assembly 22 is provided at the upper end of the fixed frame 21, and a die assembly 23 is provided in the middle of the fixed frame 21.

[0029] The frame assembly 1 serves as the basic support structure of the entire tooling, bearing and fixing other components to ensure that each component maintains a relatively stable position during operation, providing a stable platform for the operation of the entire tooling. The stamping mechanism 2 is responsible for the stamping operation of the bearings and is the core part for completing the key action of pressing the bearings onto the rotor. Through the coordinated work of its internal components, the bearings are precisely pressed onto the rotor. The bearing loading mechanism 3 mainly functions to load the bearings. The fixing frame 21 supports and fixes the drive assembly 22 and the die assembly 23, ensuring their stability during operation and enabling the drive assembly to accurately drive the die assembly to perform the stamping action. The drive assembly 22 provides the power source for the die assembly. It transmits the power of the stamping cylinder to the die assembly, enabling the die assembly to move up and down and complete the stamping operation. The die assembly 23 is the key component that directly performs the stamping operation on the bearings and rotor, achieving precise positioning and stamping of the bearings, ensuring that the bearings are accurately pressed into the correct position on the rotor.

[0030] The punch assembly 23 includes a lower die base 231, a material support seat 232 fixed at the upper end of the lower die base 231, three sets of guide rods 233 movably connected to the inner side of the material support seat 232, an upper die base 234 fixed at the upper end of the guide rods 233, an upper punch 235 fixed at the lower end of the upper die base 234, a lower punch 236 embedded in the upper part of the lower die base 231, a support platform 237 embedded inside the lower punch 236, and a guide plate 238 fixed between the lower die base 231 and the upper die base 234.

[0031] The lower die holder 231 is the basic component of the stamping die assembly, serving to support and fix other related components, ensuring their stable position during stamping and providing a stable foundation for the entire stamping operation. The material support 232 carries the rotor and bearings to be press-fitted, positioning them appropriately to prepare for subsequent stamping operations, ensuring accurate positioning of the rotor and bearings during stamping, and improving stamping precision. The guide rod 233 is movably connected to the inner side of the material support 232, and its upper end is fixed to the upper die holder 234. Its main function is to guide the up-and-down movement of the upper die holder 234, ensuring that the upper die holder 234 maintains a stable and accurate trajectory during movement, thereby ensuring that the upper punch 235 can accurately cooperate with the lower punch 236 to complete the stamping action. During the stamping process, the upper punch 235 moves downwards using the power provided by the drive assembly, pressing the bearing onto the rotor. Its internal motor shaft groove 2351 can accurately accommodate the motor shaft, ensuring the stability of the motor shaft's position during pressing, providing the prerequisite for precise bearing pressing. The lower punch 236 works in conjunction with the upper punch 235 to press-fit the bearing. Located on the upper part of the lower die holder 231, the lower punch 236 supports and assists in positioning the bearing during stamping, working with the upper punch 235 to accurately press the bearing onto the rotor. Furthermore, the bearing groove 2361 inside the lower punch 236 matches the shape of the bearing, enabling better bearing positioning. The support platform 237 is embedded inside the lower punch 236, primarily used to support the rotor, ensuring its stability during stamping and allowing the bearing to be accurately pressed onto the rotor shaft. The guide plate 238 is fixed between the lower die holder 231 and the upper die holder 234. Its upper part is fixedly connected to the upper die holder 234, and its lower end is movably connected to the lower die holder 231 via a slot 2381. The guide plate 238 further enhances the guiding and stability of the upper die holder 234's movement, ensuring the coaxiality of the upper and lower punches during stamping and improving stamping accuracy and reliability.

[0032] The upper punch 235 has a through-hole motor shaft groove 2351 inside. The lower punch 236 and the upper part of the support table 237 have bearing grooves 2361. The upper part of the guide plate 238 is fixedly connected to the upper die base 234, and the lower end of the guide plate 238 has a waist-shaped groove 2381, which is movably connected to the lower die base 231. The motor shaft groove 2351 runs through the interior of the upper punch 235. Its main function is to provide precise accommodation space for the motor shaft during the press-fitting of the bearing. During operation, the motor shaft can be accurately placed in the motor shaft groove 2351, which ensures the positional stability of the motor shaft throughout the press-fitting process. Only when the motor shaft is stable can the upper and lower bearings be accurately press-fitted to the correct position on the rotor shaft, providing a basic guarantee for achieving high-precision bearing press-fitting and avoiding deviations in bearing press-fitting due to motor shaft position offset, which would affect product quality. The bearing groove 2361 is located on the upper part of the lower punch 236 and the support table 237, and its function is crucial. When placing the bearing, the bearing groove 2361 matches the shape of the bearing, enabling precise positioning. When the lower bearing is placed within the bearing groove 2361, it ensures the bearing is in the correct position, preventing displacement or wobbling. During the stamping process, the bearing grooves 2361 of the lower punch 236 and the support table 237 provide stable support for the lower bearing, working in conjunction with the upper punch 235 to ensure that both bearings are accurately pressed into the rotor shaft, improving the accuracy and reliability of bearing press-fitting. The upper part of the guide plate 238 is fixedly connected to the upper die holder 234, and the lower end has a waist-shaped groove 2381 that is movably connected to the lower die holder 231. The guide plate 238 enhances guidance and stability during tooling operation. It cooperates with the guide rod 233 to further ensure precise guidance of the upper die holder 234 during its vertical movement. The design of the waist-shaped groove 2381 allows the guide plate 238 to be flexibly adjusted within a certain range when connected to the lower die holder 231, adapting to subtle changes during the movement of the upper die holder 234 while ensuring connection stability. This ensures that the upper punch 235 remains coaxial with the lower punch 236 throughout the stamping process, greatly improving stamping accuracy, avoiding bearing misfitting caused by misalignment of the upper and lower punches, and guaranteeing product quality and smooth production.

[0033] The drive assembly 22 includes a base 221. The top of the base 221 is provided with a lower mold fixing plate 222, a middle mold fixing plate 223 and an upper mold fixing plate 224 in sequence. A stamping cylinder 225 is fixed on the upper part of the upper mold fixing plate 224. A guide post 226 is provided through the lower mold fixing plate 222 and the upper mold fixing plate 224.

[0034] A stamping connector 227 is fixed to the end of the output shaft of the stamping cylinder 225, and the stamping connector 227 is fixedly connected to the middle die fixing plate 223. The stamping die assembly 23 is fixedly connected to the lower die fixing plate 222. A limit rod 228 is provided between the lower die fixing plate 222 and the middle die fixing plate 223.

[0035] The base 221 serves as the basic support component of the drive assembly 22, providing a stable mounting platform for other components. The main function of the lower die fixing plate 222 is to fix the lower die holder 231 in the die assembly 23, ensuring a stable connection between the die assembly 23 and the drive assembly 22. It tightly integrates the die assembly 23 and the drive assembly 22, ensuring that the die assembly 23 accurately receives power from the drive assembly 22 during the stamping process, thus achieving the stamping operation on the bearing. The middle die fixing plate 223 plays a connecting and transmission role in the drive assembly. It is connected to the output shaft end of the stamping cylinder 225 via the stamping connector 227, receiving the power generated by the stamping cylinder 225. Simultaneously, it cooperates with the upper die fixing plate 224 and the lower die fixing plate 222, driving the upper die holder 234 to move up and down under the guidance of the guide post 226, thereby realizing the stamping action of the die assembly 23. The upper die fixing plate 224 is mainly used to fix the stamping cylinder 225, stably mounting the stamping cylinder 225 above the drive assembly. It is connected to the middle die fixing plate 223 and the lower die fixing plate 222 via guide pillars 226. During the stamping process, together with the middle die fixing plate 223, it ensures the stability and accuracy of the movement of the upper die holder 234, ensuring that the upper punch 235 can accurately stamp the bearing. The stamping cylinder 225 is the power source of the drive assembly 22, generating power through the extension and retraction of its output shaft. During operation, the output shaft of the stamping cylinder 225 extends, driving the middle die fixing plate 223 downwards via the stamping connector 227, thereby causing the upper die holder 234 and the upper punch 235 to press downwards, completing the press-fitting operation of the bearing. After stamping is completed, the output shaft of the stamping cylinder 225 retracts, resetting related components and preparing for the next stamping operation. The guide post 226 is installed between the lower die fixing plate 222 and the upper die fixing plate 224. Its main function is to provide precise guidance for the up-and-down movement of the upper die fixing plate 224 and the middle die fixing plate 223. During the stamping process, the guide post 226 ensures that the middle die fixing plate 223 and the upper die fixing plate 224 can move up and down along a fixed trajectory, ensuring the coaxiality of the upper punch 235 and the lower punch 236, and improving the accuracy and reliability of stamping. The stamping connector 227 connects the output shaft of the stamping cylinder 225 and the middle die fixing plate 223. It effectively transmits the power generated by the stamping cylinder 225 to the middle die fixing plate 223, enabling the middle die fixing plate 223 to move under the drive of the stamping cylinder 225, thereby driving the stamping die assembly 23 to complete the stamping operation. The limiting rod 228 is set between the lower mold fixing plate 222 and the middle mold fixing plate 223. Its function is to limit the movement range of the middle mold fixing plate 223.During the stamping process, when the stamping cylinder 225 drives the middle die fixing plate 223 to move downward, the limit rod 228 can prevent the middle die fixing plate 223 from moving downward excessively, avoiding damage to the tooling parts, and also ensuring the safety and stability of the stamping operation.

[0036] Working principle:

[0037] During the operation of the rotor bearing clamping fixture, the operator first places a bearing into the bearing groove 2361 of the lower punch 236. This bearing groove 2361 conforms to the shape of the bearing, providing good positioning and ensuring accurate bearing placement. Next, the rotor is aligned with the placed bearing. At this point, the support platform 237 is embedded inside the lower punch 236, stably supporting the rotor and ensuring its stability during placement. Finally, another bearing is placed on top of the rotor.

[0038] After preparation, the stamping mechanism 2 is started. The drive assembly 22 in the stamping mechanism 2 begins to work, and the stamping cylinder 225 generates power, which drives the middle die fixing plate 223 through the stamping connector 227. This causes the upper die holder 234, which is connected to the middle die fixing plate 223, to move downward under the guidance of the guide rod 233. Since the upper punch 235 is fixed at the lower end of the upper die holder 234, the upper punch 235 will move downward along with the upper die holder 234.

[0039] During this process, the guide plate 238 is fixed between the lower die holder 231 and the upper die holder 234. Its upper part is fixedly connected to the upper die holder 234, and its lower end is movably connected to the lower die holder 231 through the waist-shaped groove 2381, which further enhances the guidance and stability of the movement of the upper die holder 234 and ensures that the upper punch 235 and the lower punch 236 always remain coaxial during the movement.

[0040] As the upper punch 235 moves downward, it directly acts on the upper bearing, pressing it towards the rotor. Simultaneously, the lower punch 236 provides support and auxiliary positioning from below, working in conjunction with the upper punch 235 to accurately press the two bearings onto the rotor shaft. The motor shaft groove 2351 inside the upper punch 235 accurately accommodates the motor shaft, ensuring its stable position during the pressing process and providing a reliable prerequisite for precise bearing installation. Finally, the pressing of the two bearings onto the rotor is completed.

[0041] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotor bearing pressure fixture, characterized in that, The machine includes a frame assembly (1), the upper end of which is fixed with a stamping mechanism (2) and a bearing feeding mechanism (3). The stamping mechanism (2) includes a fixed frame (21), the upper end of which is provided with a drive assembly (22), and the middle part of which is provided with a die assembly (23). The die assembly (23) includes a lower die base (231), a material support base (232) is fixed at the upper end of the lower die base (231), three sets of guide rods (233) are movably connected to the inner side of the material support base (232), an upper die base (234) is fixed at the upper end of the guide rods (233), an upper punch (235) is fixed at the lower end of the upper die base (234), a lower punch (236) is embedded in the upper part of the lower die base (231), a support platform (237) is embedded inside the lower punch (236), and a guide plate (238) is fixed between the lower die base (231) and the upper die base (234). The upper punch (235) has a through motor shaft groove (2351) inside. The upper part of the lower punch (236) and the support platform (237) is provided with a bearing groove (2361).

2. The rotor bearing pressure fixture according to claim 1, characterized in that, The upper part of the guide plate (238) is fixedly connected to the upper mold base (234), and the lower end of the guide plate (238) is provided with a waist-shaped groove (2381) and is movably connected to the lower mold base (231).

3. The rotor bearing pressure fixture according to claim 1, characterized in that, The upper punch (235) and the lower punch (236) are coaxial.

4. The rotor bearing pressure fixture according to claim 1, characterized in that, The drive assembly (22) includes a base (221), and the top of the base (221) is provided with a lower mold fixing plate (222), a middle mold fixing plate (223) and an upper mold fixing plate (224) in sequence. A stamping cylinder (225) is fixed on the upper part of the upper mold fixing plate (224), and a guide post (226) is provided through the lower mold fixing plate (222) to the upper mold fixing plate (224).

5. The rotor bearing pressure fixture according to claim 4, characterized in that, The output shaft end of the stamping cylinder (225) is fixed with a stamping connector (227), which is fixedly connected to the middle mold fixing plate (223).

6. The rotor bearing pressure fixture according to claim 1, characterized in that, The punching die assembly (23) is fixedly connected to the lower die fixing plate (222).

7. The rotor bearing pressure fixture according to claim 4, characterized in that, A limit rod (228) is provided between the lower mold fixing plate (222) and the middle mold fixing plate (223).

Images