Fixture for stator assembly

Abstract

The utility model discloses a fixture for stator assembly, which comprises a base, a first upright post, a second upright post and toggle clamps, the first upright post is mounted on one side of the base, the second upright post is mounted on the other side of the base, the base is mounted at the bottoms of the first upright post and the second upright post, the toggle clamps are mounted at the top of the first upright post, and the toggle clamps are mounted at the top of the second upright post. According to the clamp for stator assembly, the first stand column and the second stand column which are symmetrically arranged on the two sides of the base are perpendicularly connected with the base, toggle clamp riveting structures installed on the tops of the stand columns are matched, a stable symmetrical supporting system is formed, it is ensured that loads are evenly transmitted in the clamping process, and clamp deformation or overturning caused by unbalance loading is effectively prevented; and meanwhile, the clamp realizes preliminary centering positioning of the stator assembly through a positioning groove in the center of the base, and in combination with the self-adaptive adjusting function of a fixed seat movably mounted on a clamping rod and a fixed hammer, under the synergistic effect of symmetrical equal-height stand columns, clamping force on the two sides vertically acts on the end face of the stator, and inclination or displacement of a workpiece is avoided.

Description

Technical Field

[0001] This utility model relates to the field of stator assembly, specifically a fixture for stator assembly. Background Technology

[0002] In the field of motor manufacturing, stator assembly is one of the core processes, and its precision directly affects the motor's operating efficiency and lifespan. Stator assemblies typically consist of components such as the iron core and coils. During assembly, it is essential to ensure that the iron core laminations are tightly stacked, the coils are wound evenly, and the overall axis is not offset. Traditional stator assembly fixtures generally use single-column clamping or manual positioning methods. Single-sided column support easily generates off-center torque during clamping, leading to stator axis misalignment. Especially during the winding process, the lateral force caused by coil tension exacerbates fixture deformation, resulting in excessive gaps between the iron core laminations. Lever-type clamping mechanisms lack physical limit devices, and operators are prone to applying excessive force, causing workpiece surface damage or jaw breakage. Some fixtures use spring return mechanisms, but after long-term use, the elasticity diminishes, easily leading to clamping failure.

[0003] A search revealed a Chinese patent document disclosing a motor stator and rotor assembly fixture [Application No.: 202323249117.7, Publication No.: CN221263605U]. This utility model discloses a motor stator and rotor assembly fixture, relating to the field of permanent magnet motor assembly technology. This utility model includes a base, with a hydraulic cylinder mounted above the base. A clamping mechanism and a moving mechanism are mounted on the base. The clamping mechanism includes a telescopic component, a first clamping component, and a fixing component. The telescopic component includes a circular fixing plate fixedly mounted on the output shaft of the hydraulic cylinder, and several support columns fixedly mounted on the bottom of the circular fixing plate. Although this device can assemble stators, the process is complex and the operation steps are cumbersome, significantly impacting processing efficiency. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a fixture for stator assembly.

[0005] A fixture for assembling a stator is characterized in that it includes a base, a first column, a second column, and an elbow clamp. The first column is installed on one side of the base, and the second column is installed on the other side of the base. The base is installed at the bottom of the first and second columns. An elbow clamp is installed at the top of the first column and the elbow clamp is installed at the top of the second column.

[0006] Preferably, the elbow clamp includes a mounting base, a pull rod, a connecting rod, and a clamping rod. The mounting base and the pull rod are connected by rivets, the mounting base and the clamping rod are connected by rivets, the pull rod and the connecting rod are connected by rivets, and the connecting rod and the clamping rod are connected by rivets.

[0007] The above technical solution effectively achieves a stable connection between the various components of the elbow clamp. Each connection point uses rivets, a fixing method that ensures a tight fit between components, improving the stability and safety of the elbow clamp during use. Especially during stator assembly, the elbow clamp, as a key support device, remains stable even under high loads, ensuring the stator's precise installation position does not shift. This stability is crucial for improving stator assembly accuracy, effectively preventing errors caused by equipment instability. The use of rivets avoids loosening problems that may arise with other connection methods. Compared to bolts or other detachable connection methods, rivet connections offer stronger fixation and are less susceptible to external forces or long-term vibration, thus extending the equipment's service life. The elbow clamp's design takes into account long-term stability and reliability, reducing maintenance costs caused by equipment wear or loosening.

[0008] Preferably, a fixed seat is movably mounted on the clamping rod, and a fixed hammer is mounted on the fixed seat.

[0009] Through the above technical solution, the fixed base is movably mounted on the clamping rod, allowing its position to be adjusted as needed to adapt to the assembly requirements of different stators. The design of the fixing hammer effectively improves the accuracy and safety of stator clamping. During stator assembly, the fixing hammer applies appropriate pressure to ensure the stator is firmly fixed in the correct position, preventing displacement or skewness due to external forces. This design enhances the stability and adaptability of the equipment in actual operation, ensuring precise stator assembly.

[0010] Preferably, the mounting base has a limiting protrusion on its side.

[0011] Through the above technical solution, the limiting protrusion on the side of the mounting base effectively limits the range of motion of the pull rod. When the pull rod retracts, the limiting protrusion contacts the pull rod and prevents it from moving further backward, thus ensuring that the pull rod stops in the correct position. This design provides precise positioning, preventing excessive movement of the pull rod or it from deviating from the predetermined position, and ensuring the operational stability of the equipment.

[0012] Preferably, a positioning groove is provided in the center of the top of the base.

[0013] The positioning groove at the center of the base top, achieved through the aforementioned technical solution, provides precise positioning. During stator assembly, this groove offers a fixed and stable mounting point, ensuring accurate alignment and fixation of other components. This positioning groove design helps maintain stable positions for all components throughout the assembly process, preventing errors or loosening caused by improper component placement. The groove also improves assembly efficiency. When installing other components, operators can directly align the corresponding components with the groove for quick and accurate positioning, significantly reducing adjustment and correction time. This design effectively improves the working efficiency of the stator assembly fixture and reduces the possibility of human error.

[0014] Preferably, the positions of column one and column two on the base are centrally symmetrical.

[0015] Through the above technical solution, the positions of column one and column two on the base are centrally symmetrical, ensuring the structural balance and stability of the device. Due to the symmetrical arrangement of the columns, the load is evenly distributed during use, avoiding offset or vibration caused by imbalance and improving overall stability. This centrally symmetrical design not only improves the accuracy of stator assembly but also effectively reduces the impact of external shocks or operations on the equipment. The symmetrical structure ensures that each component maintains a consistent load distribution during operation, thereby improving operational accuracy and safety.

[0016] Preferably, column one and column two have the same height.

[0017] Through the above technical solution, column one and column two are designed with equal height, forming a symmetrical and balanced support system for the entire clamp. The equal height of the two columns ensures that the vertical force applied to the stator assembly during clamping is evenly distributed, effectively eliminating the off-center loading phenomenon caused by height differences. This design keeps the stator core in a horizontal state throughout the assembly process, avoiding assembly misalignment caused by excessive pressure on one side, while reducing the need for operators to repeatedly adjust the clamping angle, significantly improving the consistency of batch operations.

[0018] Preferably, the base is connected to both column one and column two in a perpendicular manner.

[0019] The strict vertical installation relationship between the base and the column establishes a stable force transmission path. When the column is subjected to vertical force, the generation of lateral moment is minimized, allowing the axial pressure generated during clamping to be directly transmitted to the bearing surface of the base. This structural design not only enhances the clamp's resistance to lateral impacts but also ensures that the movement trajectory of the clamping mechanism remains orthogonal to the stator end face, fundamentally avoiding the risk of workpiece surface damage caused by oblique clamping, while improving the reliability of clamping and positioning.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The stator assembly fixture is vertically connected to the base via two symmetrically arranged columns on both sides of the base, and together with the elbow clamp riveting structure installed on the top of the columns, it forms a stable symmetrical support system, ensuring that the load is evenly transmitted during the clamping process and effectively preventing the fixture from deforming or overturning due to uneven load.

[0022] 2. The stator assembly fixture achieves initial centering positioning of the stator assembly through the positioning groove in the center of the base. Combined with the adaptive adjustment function of the fixed seat and fixed hammer movably mounted on the clamping rod, and the synergistic effect of the symmetrical and equal-height columns, the clamping force on both sides is applied vertically to the stator end face, preventing the workpiece from tilting or shifting.

[0023] 3. The elbow clamp of this stator assembly fixture adopts a single-lever drive design, which allows the operator to complete the clamping or releasing action by simply pulling the lever with one hand. Combined with the limiting protrusion on the side of the mounting base to constrain the movement stroke, it effectively avoids misoperation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of some components of this utility model;

[0026] Figure 3 This is a magnified view of part A in this practical application;

[0027] In the diagram: 101, base; 102, column one; 103, column two; 104, elbow clamp; 201, mounting base; 202, pull rod; 203, connecting rod; 204, clamping rod; 205, fixed base; 206, fixing hammer; 207, limiting protrusion; 301, positioning groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 3 This utility model provides a technical solution:

[0030] A fixture for assembling a stator is characterized in that it includes a base 101, a first column 102, a second column 103, and an elbow clamp 104. The first column 102 is installed on one side of the base 101, and the second column 103 is installed on the other side of the base 101. The base 101 is installed at the bottom of the first column 102 and the second column 103. The elbow clamp 104 is installed at the top of the first column 102 and the top of the second column 103.

[0031] Specifically, the elbow clamp 104 includes a mounting base 201, a pull rod 202, a connecting rod 203, and a clamping rod 204. The mounting base 201 is connected to the pull rod 202 by rivets, the mounting base 201 is connected to the clamping rod 204 by rivets, the pull rod 202 is connected to the connecting rod 203 by rivets, and the connecting rod 203 is connected to the clamping rod 204 by rivets. This effectively achieves a stable connection between the various components of the elbow clamp 104. Each connection point uses rivets, and this fixing method ensures a tight fit between the components, improving the stability and safety of the elbow clamp 104 during use. Especially during stator assembly, the elbow clamp 104, as a key support device, can remain stable even under high loads, ensuring that the precise installation position of the stator does not shift. This stability is crucial for improving stator assembly accuracy, effectively preventing errors caused by equipment instability. The use of rivet connections avoids loosening problems that may arise from other connection methods. Compared to bolts or other detachable connections, rivet connections offer stronger stability and are less susceptible to external forces or long-term vibrations, thus extending the equipment's lifespan. The elbow clamp 104 is designed with long-term stability and reliability in mind, reducing maintenance costs caused by equipment wear or loosening.

[0032] Specifically, a fixed base 205 is movably mounted on the clamping rod 204, and a fixing hammer 206 is mounted on the fixed base 205. The fixed base 205's movability on the clamping rod 204 allows for position adjustment to accommodate different stator assembly requirements. The design of the fixing hammer 206 effectively improves the accuracy and safety of stator clamping. During stator assembly, the fixing hammer 206 applies appropriate pressure to ensure the stator is securely fixed in the correct position, preventing displacement or skewness due to external forces. This design enhances the stability and adaptability of the equipment in actual operation, ensuring precise stator assembly.

[0033] Specifically, the mounting base 201 has a limiting protrusion 207 on its side, which effectively limits the movement range of the pull rod 202. When the pull rod 202 retracts, the limiting protrusion 207 contacts the pull rod 202 and prevents it from moving further backward, thus ensuring that the pull rod 202 stops in the correct position. This design provides precise positioning, preventing excessive movement of the pull rod 202 or it from moving out of its predetermined position, and ensuring the operational stability of the equipment.

[0034] Specifically, a positioning groove 301 is provided in the center of the top of the base 101, providing precise positioning. During stator assembly, the positioning groove 301 provides a fixed and stable mounting point, allowing other components to be accurately aligned and secured. This positioning groove 301 design helps ensure that all components maintain a stable position throughout the assembly process, avoiding errors or loosening caused by improper component positioning. The presence of the positioning groove 301 also improves the assembly efficiency of the equipment. When installing other components, operators can directly align the corresponding components with the groove 301, quickly and accurately completing the positioning, greatly reducing adjustment and correction time. This design effectively improves the working efficiency of the stator assembly fixture and reduces the possibility of human error.

[0035] Specifically, the positions of columns 102 and 103 on the base 101 are centrally symmetrical, ensuring the structural balance and stability of the device. Due to the symmetrical arrangement of columns 102 and 103, the load is evenly distributed during operation, preventing offset or vibration caused by imbalance and improving overall stability. This centrally symmetrical design not only improves the accuracy of stator assembly but also effectively reduces the impact of external shocks or operations on the equipment. The symmetrical structure ensures that each component maintains a consistent load distribution during operation, thereby improving operational accuracy and safety.

[0036] Specifically, column 102 and column 203 are of the same height, and their equal height design creates a symmetrical and balanced support system for the entire fixture. The equal height of the two columns ensures that the vertical force applied to the stator assembly during clamping is evenly distributed, effectively eliminating off-center loading caused by height differences. This design keeps the stator core horizontal throughout the assembly process, avoiding misalignment caused by excessive pressure on one side, while also reducing the need for operators to repeatedly adjust the clamping angle, significantly improving the consistency of batch operations.

[0037] Specifically, the base 101 is vertically connected to both the first column 102 and the second column 103. This strict vertical installation relationship between the base 101 and the columns 102 and 103 establishes a stable force transmission path. When the columns 102 and 103 are subjected to vertical force, the generation of lateral torque is minimized, allowing the axial pressure generated during clamping to be directly transmitted to the bearing surface of the base 101. This structural design not only enhances the clamp's resistance to lateral impacts but also ensures that the movement trajectory of the clamping mechanism remains orthogonal to the stator end face, fundamentally avoiding the risk of workpiece surface damage caused by oblique clamping, while also improving the reliability of clamping and positioning.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A jig for assembling a stator, characterized by comprising: The utility model relates to a kind of elbow clamp, including base (101), column one (102), column two (103) and elbow clamp (104), one side of base (101) is installed with column one (102), the other side of base (101) is installed with column two (103), base (101) is installed at the bottom of column one (102) and column two (103), the top of column one (102) is installed with elbow clamp (104), the top of column two (103) is installed with elbow clamp (104); The elbow clamp (104) includes a mounting seat (201), a pull rod (202), a connecting rod (203), and a clamping rod (204). The mounting seat (201) is connected to the pull rod (202) by rivets. The mounting seat (201) is connected to the clamping rod (204) by rivets. The pull rod (202) is connected to the connecting rod (203) by rivets. The connecting rod (203) is connected to the clamping rod (204) by rivets. The clamping rod (204) movably has a fixing seat (205) installed thereon. The fixing seat (205) has a fixing hammer (206) installed thereon.

2. The fixture for assembling a stator according to claim 1, wherein: The mounting seat (201) has a limiting protrusion (207) on the side surface.

3. The fixture for assembling a stator according to claim 1, wherein: The base (101) has a positioning groove (301) in the center of the top.

4. The fixture of claim 1, wherein: The column one (102) and the column two (103) are centrally symmetric in the position installed on the base (101).

5. The fixture for assembling a stator according to claim 1, wherein: The column one (102) and the column two (103) have the same height.

6. The fixture for assembling a stator according to claim 1, wherein: The base (101) is connected to the column one (102) and the column two (103) in a perpendicular state.

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