Punching sheet overlying tool and motor production system
By combining the design of positioning columns, positioning cylinders, and fixed clamping plates, the problem of poor stator lamination slot alignment in iron core stacking was solved, achieving high-precision stacking of iron cores and improving welding quality, thereby enhancing the performance and stability of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GREE (CHENGDU) ELECTRIC APPLIANCES CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-17
AI Technical Summary
Existing iron core stacking fixtures cannot guarantee the alignment of stator lamination slots, resulting in reduced motor operating efficiency and inaccurate alignment of welding slots, affecting motor stability and performance.
The system employs a dual limiting mechanism of positioning pins and positioning cylinders. The positioning structure on the inner wall of the positioning cylinder works in conjunction with the edge of the lamination, along with a fixed clamping plate and positioning protrusions or strips, to ensure precise positioning and limiting of the lamination, thereby achieving high-precision stacking of the iron core.
It improves the alignment and stability of the iron core, reduces the problem of motor performance degradation, ensures welding quality and the uniformity of the overall structure, and improves the operating efficiency and magnetic field distribution uniformity of the motor.
Smart Images
Figure CN224138868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a lamination stacking tooling and motor manufacturing system. Background Technology
[0002] As a key component of an electric motor, the iron core serves both to conduct magnetism and provide space for the coils. During motor operation, the iron core must withstand the combined effects of mechanical vibration, electromagnetic force, and heat. Therefore, the manufacturing quality of the iron core has a crucial impact on motor performance. In the motor manufacturing process, the iron core is typically made by stacking multiple rotor laminations. During stacking, a certain number of laminations are aligned (stacked), pressed, and fixed into a dimensionally accurate, neatly shaped, and tightly fitted whole. Currently, for circular lamination iron cores, the production of existing motor iron cores generally uses expansion-type iron core stacking fixtures. The iron core is tightened to ensure the neatness of the inner circle, and then a press is used to press the iron core. However, while this pressing method ensures the coaxiality of the inner circle of the iron core, it cannot guarantee the alignment of the stator lamination slots, thus affecting the flatness of the entire stator iron core slot inner wall, leading to reduced motor operating efficiency and potentially causing abnormal vibration and noise. In addition, for motors with high power and large size, such as drive motors, multiple welding slots need to be set on the outer circle of the stator laminations to facilitate the welding of the entire iron core after the stator laminations are stacked, thus ensuring the stability of the stator iron core. However, the existing iron core stacking tooling cannot guarantee the precise alignment of the welding slots.
[0003] Therefore, it is necessary to improve the existing iron core stacking tooling to overcome the shortcomings of the existing technology. Utility Model Content
[0004] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide a lamination stacking fixture. This fixture can simultaneously limit the laminations through positioning pins and positioning cylinders, and restrict the movement of the laminations through the positioning structure on the inner wall of the positioning cylinder, thereby achieving complete limiting of the laminations, ensuring the alignment accuracy during iron core stamping, helping to improve the processing quality of the iron core, and thus improving the performance of the motor.
[0005] A lamination stacking fixture, comprising:
[0006] A support base, wherein a detachable positioning post and positioning cylinder are provided on one side of the support base;
[0007] The positioning cylinder and the positioning post are coaxially arranged, and an accommodating space for accommodating the punch is formed between the inner wall of the positioning cylinder and the outer wall of the positioning post. The inner wall of the positioning cylinder is provided with a positioning structure for positioning the punch.
[0008] This lamination stacking fixture uses both positioning pins and positioning cylinders to simultaneously limit the laminations. The positioning pins engage with the inner holes of the laminations to determine their inner circle position, ensuring the coaxiality of the core's inner circle. The positioning structure on the inner wall of the positioning cylinder engages with the edge of the laminations, restricting their movement and rotation in the circumferential direction. This dual limiting mechanism ensures that the laminations maintain precise positions during the stacking process, guaranteeing the alignment accuracy of the core during stamping. Compared to traditional fixtures, the improved alignment accuracy results in better alignment of the core slots, reducing motor performance degradation caused by poor slot alignment. Precise positioning and limiting ensure that each lamination is positioned within the core according to design requirements, resulting in a more uniform and stable overall core structure. During the pressing process, the accurate positioning of the laminations ensures uniform core thickness and good perpendicularity after stacking, preventing quality issues such as skewing and uneven thickness. Furthermore, the high-precision positioning ensures welding quality during subsequent processing such as welding, further improving the overall processing quality of the core.
[0009] In a preferred embodiment of this utility model, a fixed clamping plate is further included. The fixed clamping plate is provided with a first mounting hole, and a second mounting hole is provided on one side of the positioning cylinder. The first mounting hole and the second mounting hole correspond to each other.
[0010] The fixed clamping plate is fixedly connected by bolts passing through the first mounting hole and the second mounting hole.
[0011] During use, after all laminations are placed, the fixing plate is placed on top of the laminations. The position of the fixing plate is adjusted so that the first mounting hole aligns perfectly with the second mounting hole on the positioning cylinder. Then, bolts of appropriate specifications are selected and passed through the first and second mounting holes sequentially, and tightened using a wrench or other tools to secure the fixing plate firmly to the positioning cylinder. During bolt tightening, a torque wrench is used to control the tightening torque, ensuring consistent tightening of all bolts and preventing lamination displacement due to uneven force. The fixing plate, fixed to the positioning cylinder with bolts, provides a stable axial pressure to the laminations after lamination stacking. In traditional lamination stacking fixtures, laminations may rely solely on the radial restraint of the positioning pins and positioning cylinder, making them prone to loosening and displacement during subsequent operations or transportation. The fixing plate in this embodiment effectively prevents this, ensuring the laminations maintain a tight fit and accurate position throughout the entire processing, thereby improving the overall quality and stability of the core.
[0012] In a preferred embodiment of this utility model, when the fixing plate is fixed to one side of the positioning cylinder, a gap is formed between the outer peripheral wall of the fixing plate and the inner wall of the positioning cylinder.
[0013] When the laminations of the iron core are placed in the receiving space, the welding grooves on the edges of the laminations are exposed in the gap.
[0014] The welding grooves on the edges of the laminations are exposed in the gaps, making welding operations more convenient. In traditional core lamination processes, welding grooves are easily obscured by other components or difficult to position, requiring additional steps for positioning and adjustment, increasing welding difficulty and production time. In this solution, the welding grooves are directly exposed, allowing welding equipment to directly weld them, reducing positioning time, improving welding accuracy and quality, and ensuring the overall stability of the stator core structure.
[0015] While maintaining a gap between the fixed clamping plate and the positioning cylinder, the laminations can still be effectively clamped. Under the action of the bolts, the fixed clamping plate evenly transmits pressure to the laminations, causing them to be tightly stacked together. This design ensures the stability of the lamination stacking, while also leaving space for the welding groove, preventing the clamping structure from affecting the position of the welding groove, and ensuring the overall performance of the core.
[0016] In a preferred embodiment of this invention, the positioning structure includes a plurality of protrusions that protrude from the inner wall of the positioning cylinder toward the center. The cross-section of the protrusions is circular, rectangular, or triangular. The protrusions are engaged in the welding grooves of the laminations of the iron core to limit the laminations of the iron core.
[0017] In this embodiment, a protrusion is used to limit the movement of the laminations in the iron core. In practical applications, the protrusion engages with the welding groove on the edge of the lamination, thereby limiting its movement. Due to the tight fit between the protrusion and the welding groove, the circumferential rotation of the lamination is effectively restricted, ensuring the positional accuracy of each lamination.
[0018] In a preferred embodiment of this utility model, the positioning structure includes a plurality of positioning protrusions, the length direction of which is arranged along the length direction of the positioning cylinder, and the plurality of positioning protrusions are evenly distributed along the circumference of the positioning cylinder on the inner sidewall of the positioning cylinder.
[0019] The edges of the laminations of the iron core are provided with welding grooves, and the positioning protrusions are adapted to the welding grooves.
[0020] In this embodiment, the matching design of the positioning protrusions and the welding grooves on the edge of the laminations provides high-precision positioning for the laminations. Compared to the traditional method of positioning solely based on the inner hole and outer circle, this circumferentially distributed positioning protrusions can constrain the laminations in the circumferential direction of multiple laminations, effectively preventing rotation and displacement of the laminations in the circumferential direction. Precise positioning during the manufacturing of the motor stator core ensures a more uniform core slot shape, guarantees the installation accuracy of the motor windings, and thus improves the performance and efficiency of the motor.
[0021] In a preferred embodiment of this utility model, the side wall of the support base is provided with a third mounting hole and a fourth mounting hole. The fourth mounting hole is located around the third mounting hole. The third mounting hole is used to connect with the positioning column, and the fourth mounting hole is used to connect with the positioning cylinder.
[0022] In a preferred embodiment of this invention, a first contour groove is provided on the side wall of the support base connected to the positioning cylinder, and the end face of the positioning post connected to the support base is adapted to the first contour groove.
[0023] The third and fourth mounting holes on the support base are used to connect the positioning post and the positioning cylinder, respectively. This installation structure design allows the positioning post and positioning cylinder to be accurately fixed in their designed positions during installation, ensuring the relative positional accuracy between them and thus ensuring the coaxiality of the positioning cylinder and positioning post. Furthermore, the fitting design of the first contour groove with the end face of the positioning post further improves the accuracy and stability of the positioning post installation, reduces installation errors, and lays the foundation for precise positioning of the stamping.
[0024] In addition, the tight fit between the first contour groove and the end face of the positioning post increases the contact area and friction between the positioning post and the support base, making the positioning post less prone to displacement and shaking when subjected to external forces (such as pressure during the lamination process, vibration during motor operation, etc.).
[0025] In a preferred embodiment of this invention, a second contour groove is provided on the side wall of the support base connecting to the positioning cylinder, and the end face of the positioning cylinder connecting to the support base is adapted to the second contour groove.
[0026] In a preferred embodiment of this invention, a first magnetic material is provided in the second contour groove, and a second magnetic material is provided on the end face of the positioning cylinder. The first magnetic material and the second magnetic material have opposite magnetic properties.
[0027] The matching design of the second contour groove with the end face of the positioning cylinder provides precise installation positioning for the positioning cylinder from a mechanical structure perspective, limiting the displacement and shaking of the positioning cylinder during installation. Furthermore, the mutual attraction between the first and second magnetic materials not only automatically guides and corrects the position during installation but also increases the connection force between the positioning cylinder and the support base after installation, further improving the stability of the positioning cylinder installation.
[0028] The second objective of this utility model is to provide an electric motor production system, including the lamination stacking fixture described above.
[0029] The beneficial effects of this utility model are as follows:
[0030] This utility model provides a lamination stacking fixture, which includes a support base, with a detachable positioning post and positioning cylinder on one side of the support base. The positioning cylinder and positioning post are coaxially arranged, and a receiving space for accommodating laminations is formed between the inner wall of the positioning cylinder and the outer wall of the positioning post. The inner wall of the positioning cylinder is provided with a positioning structure for positioning the laminations. During use, pre-stamped stator laminations are placed one by one into the receiving space between the positioning cylinder and the positioning post. The inner hole of the lamination fits tightly with the outer wall of the positioning post, and the outer edge of the lamination interacts with the positioning structure on the inner wall of the positioning cylinder. The positioning structure is designed as a groove or protrusion that matches the shape of the lamination edge. When the lamination is placed, the groove and protrusion can accurately embed into the corresponding position of the lamination edge, achieving precise positioning of the lamination. After all laminations are placed, a special clamping device is used to clamp the stacked laminations. The dual limiting mechanism, which uses positioning columns and positioning cylinders to position the laminations, ensures that the laminations maintain a precise position during the stacking process, guaranteeing the alignment accuracy during core stamping. It also ensures that the welding grooves on the laminations are precisely aligned, resulting in a more uniform and stable overall structure after core stamping and higher quality cores.
[0031] This application also provides a motor production system including the above-mentioned lamination stacking fixture. The system can ensure the precise alignment of the laminations of the iron core through the above-mentioned fixture, improve the processing quality of the iron core, and make the magnetic field distribution of the manufactured motor more uniform during operation, thereby reducing energy loss and electromagnetic interference caused by iron core quality problems. Attached Figure Description
[0032] Figure 1 This is an exploded view of the lamination stacking fixture provided in an embodiment of this utility model;
[0033] Figure 2 This is a schematic diagram of the support base provided in an embodiment of this utility model;
[0034] Figure 3 This is a schematic diagram of the positioning cylinder provided in an embodiment of this utility model;
[0035] Figure 4 This is a schematic diagram of the fixing and clamping plate provided in an embodiment of this utility model;
[0036] Figure 5 This is an exploded view of the lamination stacking fixture provided in the embodiments of this utility model when used for iron core pressing;
[0037] Figure 6 This is a schematic diagram of the motor core provided in an embodiment of this utility model.
[0038] Figure label:
[0039] 1. Support base; 11. Third mounting hole; 12. Fourth mounting hole; 2. Positioning post; 21. Second mounting hole; 3. Positioning cylinder; 31. Positioning structure; 4. Fixed clamping plate; 41. First mounting hole; 100. Iron core; 101. Welding groove. Detailed Implementation
[0040] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.
[0041] In the current production of motor cores, for round lamination cores, a core stacking fixture of the expansion type is generally used. This fixture tightens the core to ensure the alignment of the inner circle, and then a press is used to press the core firmly. However, while this pressing method ensures the coaxiality of the inner circle of the core, it cannot guarantee the alignment of the stator lamination slots, thus affecting the flatness of the entire stator core slot inner wall. This leads to reduced motor operating efficiency and may even cause abnormal vibration and noise. Furthermore, for high-power, large-sized motors such as drive motors, multiple welding slots are required on the outer circle of the stator laminations to facilitate welding of the entire core after stacking, ensuring the stability of the stator core. However, existing core stacking fixtures cannot guarantee precise alignment of these welding slots.
[0042] Based on this, this application provides a lamination stacking fixture.
[0043] Example 1
[0044] like Figures 1-6 As shown, this embodiment provides a lamination stacking fixture, comprising:
[0045] Support base 1, with a detachable positioning post 2 and positioning cylinder 3 provided on one side of the support base 1;
[0046] The positioning cylinder 3 and the positioning post 2 are coaxially arranged. The inner wall of the positioning cylinder 3 and the outer wall of the positioning post 2 form a receiving space for accommodating the punch. The inner wall of the positioning cylinder 3 is provided with a positioning structure 31 for positioning the punch.
[0047] Specifically, the support base 1 of this application is made of high-strength aluminum alloy or cast iron, while the positioning column 2 and positioning cylinder 3 are both made of wear-resistant, high-strength alloy steel. Both the positioning column 2 and positioning cylinder 3 can be fixed to the support base 1 with screws. During use, the appropriate positioning column 2 and positioning cylinder 3 are selected according to the model of the motor to be produced to meet production requirements.
[0048] During production, after the positioning post 2 and positioning cylinder 3 are fixed on the support base 1, the pre-stamped stator laminations are placed one by one into the receiving space between the positioning cylinder 3 and the positioning post 2. The inner hole of the lamination fits tightly with the outer wall of the positioning post 2, and the edge of the lamination interacts with the positioning structure 31 on the inner wall of the positioning cylinder 3. The positioning structure 31 is designed with grooves and protrusions that match the shape of the lamination edge. When the lamination is placed, the grooves and protrusions can accurately embed into the corresponding positions of the lamination edge, achieving precise positioning of the lamination. During the placement of the laminations, a robotic arm is used to assist in the operation to ensure the accuracy of the lamination placement. After all the laminations are placed, a special clamping device is used to clamp the stacked laminations. The clamping force is evenly transmitted to each lamination through the support base 1. Preferably, during the clamping process, the stacking thickness and perpendicularity of the laminations are monitored in real time. Using pressure sensors and laser rangefinders, etc., it is ensured that the stacking thickness meets the design requirements and the perpendicularity error is controlled within the allowable range. After the stacking is completed, the stacked iron core 100 is removed from the tooling for subsequent processing, such as insulation treatment.
[0049] This stacking fixture uses both positioning pins 2 and positioning cylinders 3 to simultaneously limit the position of the laminations. Positioning pin 2 engages with the inner hole of the lamination to determine its inner circle position, ensuring the coaxiality of the inner circle of the core 100. The positioning structure 31 on the inner wall of the positioning cylinder 3 engages with the edge of the lamination, restricting its movement and rotation in the circumferential direction. This dual limiting mechanism ensures that the laminations maintain a precise position during stacking, guaranteeing the alignment accuracy of the core 100 during stamping. Compared to traditional fixtures, the improved alignment accuracy results in better alignment of the core 100 slots, reducing motor performance degradation caused by poor slot alignment. Precise positioning and limiting ensure that each lamination is positioned within the core 100 according to design requirements, resulting in a more uniform and stable overall structure. During pressing, the accurate positioning of the laminations ensures uniform thickness and good perpendicularity of the stacked core 100, preventing quality issues such as skewing or uneven thickness. Moreover, in subsequent welding and other processing, high-precision positioning also ensured welding quality, further improving the overall processing quality of the iron core 100.
[0050] Example 2
[0051] This embodiment is an improvement on embodiment 1.
[0052] like Figures 1-6 As shown, in this embodiment, a fixing plate 4 is also included. The fixing plate 4 is provided with a first mounting hole 41, and a second mounting hole 21 is provided on one side of the positioning cylinder 3. The first mounting hole 41 corresponds to the second mounting hole 21.
[0053] The fixed clamping plate 4 is fixedly connected by bolts that pass through the first mounting hole 41 and the second mounting hole 21.
[0054] Specifically, the fixing plate 4 can be made of aluminum alloy, which reduces the overall weight while ensuring strength.
[0055] During use, after the positioning pin 2 and positioning cylinder 3 are fixed on the support base 1, the punch pieces can be placed. After all the punch pieces are placed, the fixing clamping plate 4 is placed on top of the punch pieces. Adjust the position of the fixing clamping plate 4 so that the first mounting hole 41 corresponds perfectly with the second mounting hole 21 on the positioning cylinder 3. Then, select bolts of appropriate specifications, pass them through the first mounting hole 41 and the second mounting hole 21 in sequence, and tighten the bolts with a wrench or other tools to firmly fix the fixing clamping plate 4 on the positioning cylinder 3. During the tightening process, use a torque wrench to control the tightening torque to ensure that the tightening degree of each bolt is consistent and to avoid the punch pieces shifting due to uneven force. The fixing clamping plate 4 is fixedly connected to the positioning cylinder 3 by bolts, which can provide a stable axial pressure for the punch pieces after the punch pieces are stacked. In traditional punch piece stacking tooling, the punch pieces may only rely on the radial limitation of the positioning pin 2 and positioning cylinder 3. In subsequent operations or transportation, the punch pieces are prone to loosening and shifting. The fixed clamping plate 4 in this embodiment can effectively prevent this from happening, ensuring that the laminations maintain a tight fit and accurate positional relationship throughout the entire processing, thereby improving the overall quality and stability of the iron core 100.
[0056] More preferably, in this embodiment, when the fixing plate 4 is fixed to one side of the positioning cylinder 3, a gap is formed between the outer peripheral wall of the fixing plate 4 and the inner wall of the positioning cylinder 3.
[0057] When the lamination of the core 100 is placed in the receiving space, the welding groove 101 on the edge of the lamination is exposed in the gap.
[0058] The welding groove 101 on the edge of the lamination is exposed in the gap, making the welding operation more convenient. In the traditional core 100 stacking process, the welding groove 101 is easily obscured by other components or difficult to position, requiring additional steps for positioning and adjustment, which increases the welding difficulty and production time. In this solution, the welding groove 101 is directly exposed, and the welding equipment can directly weld it, reducing positioning time, improving welding accuracy and quality, and ensuring the overall structural stability of the stator core 100.
[0059] While a gap is formed between the fixed clamping plate 4 and the positioning cylinder 3, effective clamping of the laminations can still be achieved. Under the action of the bolts, the fixed clamping plate 4 evenly transmits pressure to the laminations, making the laminations tightly stacked together. This design not only ensures the stability of the lamination stacking, but also leaves space for the welding groove 101, avoiding the impact of the clamping structure on the position of the welding groove 101, and ensuring the overall performance of the iron core 100.
[0060] Example 3
[0061] This embodiment is an improvement on embodiment 1.
[0062] like Figures 1-6 As shown, in this embodiment, the positioning structure 31 includes a plurality of protrusions. The protrusions protrude from the inner wall of the positioning cylinder 3 toward the center. The cross-section of the protrusions is circular, rectangular or triangular. The protrusions are engaged in the welding groove 101 of the lamination of the iron core 100 to limit the lamination of the iron core 100.
[0063] In this embodiment, the laminations of the iron core 100 are limited by a protrusion. In practical applications, the protrusion engages with the welding groove 101 on the edge of the lamination, thereby limiting the lamination's position. Due to the tight fit between the protrusion and the welding groove 101, the circumferential rotation of the lamination is effectively restricted, ensuring the positional accuracy of each lamination.
[0064] Specifically, the shape of the bump can be adjusted as needed, that is, a suitable bump can be selected according to the shape of the welding groove 101 of the lamination of the iron core 100. The height of the bump protruding from the inner wall of the positioning cylinder 3 can be 0.5cm-1.5cm.
[0065] Example 4
[0066] This embodiment is an improvement on embodiment 1.
[0067] like Figures 1-6 As shown, in this embodiment, a positioning structure 31 different from that in embodiment 3 is provided. In this embodiment, the positioning structure 31 includes a plurality of positioning protrusions, the length direction of which is arranged along the length direction of the positioning cylinder 3, and the plurality of positioning protrusions are evenly distributed along the circumference of the positioning cylinder 3 on the inner sidewall of the positioning cylinder (3);
[0068] The edge of the lamination of the iron core 100 is provided with a welding groove 101, and the positioning protrusion is adapted to the welding groove 101. Specifically, the shape of the cross-section of the positioning protrusion is adapted to the cross-section of the welding groove 101.
[0069] In this embodiment, the matching design of the positioning protrusions and the welding grooves 101 on the edge of the laminations of the core 100 provides high-precision positioning for the laminations. Compared with the traditional method of positioning solely based on the inner hole and outer circle, this circumferentially distributed positioning protrusion can constrain the laminations in the circumferential direction of multiple laminations, effectively preventing rotation and displacement of the laminations in the circumferential direction. Precise positioning during the manufacturing of the motor stator core 100 ensures a more uniform slot shape, guarantees the installation accuracy of the motor windings, and thus improves the performance and efficiency of the motor.
[0070] Example 5
[0071] This embodiment is an improvement on embodiment 1.
[0072] like Figures 1-6 As shown, in this embodiment, the side wall of the support base 1 is provided with a third mounting hole 11 and a fourth mounting hole 12. The fourth mounting hole 12 is located around the third mounting hole 11. The third mounting hole 11 is used to connect with the positioning post 2, and the fourth mounting hole 12 is used to connect with the positioning cylinder 3.
[0073] In this embodiment, a first contour groove is also provided on the side wall of the support base 1 that connects to the positioning post 2, and the end face of the positioning post 2 that connects to the support base 1 is adapted to the first contour groove.
[0074] The third mounting hole 11 and the fourth mounting hole 12 on the support base 1 are used to connect the positioning column 2 and the positioning cylinder 3, respectively. This installation structure design allows the positioning column 2 and the positioning cylinder 3 to be accurately fixed in the designed position during installation, ensuring the relative positional accuracy between them, and thus ensuring the coaxiality of the positioning cylinder 3 and the positioning column 2. During installation, the end face of the positioning column 2 is first aligned with the first contour groove on the side wall of the support base 1, and then the positioning column 2 is fixed to the support base 1 by bolts passing through the third mounting hole 11. Due to the matching design of the first contour groove and the end face of the positioning column 2, its position can be quickly and accurately determined when installing the positioning column 2, without repeated adjustments, greatly improving installation efficiency. At the same time, this contour design also enhances the connection stability between the positioning column 2 and the support base 1, reducing the possibility of displacement of the positioning column 2 during subsequent use.
[0075] In addition, the tight fit between the first contour groove and the end face of the positioning post 2 increases the contact area and friction between the positioning post 2 and the support base 1, making the positioning post 2 less prone to displacement and shaking when subjected to external forces (such as pressure during the lamination process, vibration during motor operation, etc.).
[0076] Specifically, the number of third mounting holes 11 can be 3-6, while the number of fourth mounting holes 12 is 4-8. The fourth mounting holes 12 are arranged in a ring on the support base 1.
[0077] Furthermore, in this embodiment, a second contour groove is provided on the side wall of the support base 1 that connects to the positioning cylinder 3, and the end face of the positioning cylinder 3 that connects to the support base 1 is adapted to the second contour groove.
[0078] In this embodiment, a first magnetic material is provided in the second contour groove, and a second magnetic material is provided on the end face of the positioning cylinder 3. The first magnetic material and the second magnetic material have opposite magnetic properties.
[0079] In this embodiment, when installing the positioning cylinder 3, the end face of the positioning cylinder 3 is aligned with the second contour groove on the side wall of the support base 1. Due to the mutual attraction between the first and second magnetic materials, the positioning cylinder 3 is automatically attracted and guided when it approaches the second contour groove, quickly and accurately embedding itself into the groove. This magnetic attraction method not only facilitates the installation operation but also automatically corrects the position of the positioning cylinder 3 during installation, ensuring the installation accuracy between the positioning cylinder 3 and the support base 1. After installation, the end face of the positioning cylinder 3 fits tightly with the second contour groove, which provides good limiting for the positioning cylinder 3. Combined with the attraction force of the magnetic material, this greatly improves the stability of the positioning cylinder 3 installation.
[0080] Specifically, the first magnetic material is directly embedded in the second contour groove to ensure stable installation of the magnetic material.
[0081] Example 6
[0082] This embodiment provides an electric motor production system, including the lamination stacking fixture described above.
[0083] like Figures 1-6 As shown, specifically, the system includes an automated punch press equipped with high-precision dies. Silicon steel sheet raw materials are fed to the punch press via an automated feeding device, and under the pressure of the dies, are formed into stamped cores 100 that meet the dimensional and shape requirements. The automated punch press also includes cleaning and surface treatment equipment. After stamping, the surface oil and impurities are removed by the cleaning equipment, followed by surface treatment processes such as insulating coating spraying to enhance the insulation performance of the stamped cores, providing stable quality stamped cores for subsequent lamination processes. The produced stamped cores are then fed into the aforementioned lamination fixtures for lamination. The resulting core 100 can then be sent to subsequent post-processing equipment for further insulation treatment.
[0084] The system can ensure the precise alignment of the laminations of the iron core 100 through the aforementioned tooling, thereby improving the processing quality of the iron core 100. This results in a more uniform magnetic field distribution during the operation of the manufactured motor, reducing energy loss and electromagnetic interference caused by quality issues with the iron core 100.
[0085] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0086] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0087] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. The above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A lamination stacking fixture, characterized in that, include: A support base (1) is provided with a positioning post (2) and a detachable positioning cylinder (3) on one side; The positioning cylinder (3) is coaxially arranged with the positioning column (2). The inner wall of the positioning cylinder (3) and the outer wall of the positioning column (2) form a receiving space for accommodating the punch. The inner wall of the positioning cylinder (3) is provided with a positioning structure (31) for positioning the punch.
2. The lamination stacking fixture according to claim 1, characterized in that: It also includes a fixing plate (4), on which a first mounting hole (41) is provided, and a second mounting hole (21) is provided on one side of the positioning cylinder (3), with the first mounting hole (41) corresponding to the second mounting hole (21); The fixed clamping plate (4) is fixedly connected by bolts passing through the first mounting hole (41) and the second mounting hole (21).
3. The lamination stacking fixture according to claim 2, characterized in that: When the fixing plate (4) is fixed to one side of the positioning cylinder (3), a gap is formed between the outer peripheral wall of the fixing plate (4) and the inner wall of the positioning cylinder (3); When the lamination of the core (100) is placed in the receiving space, the welding groove (101) on the edge of the lamination is exposed in the gap.
4. The lamination stacking fixture according to any one of claims 1-3, characterized in that: The positioning structure (31) includes several protrusions that protrude from the inner wall of the positioning cylinder (3) toward the center. The cross-section of the protrusion is circular, rectangular or triangular. The protrusion is engaged in the welding groove (101) of the lamination of the iron core (100) to limit the lamination of the iron core (100).
5. The lamination stacking fixture according to any one of claims 1-3, characterized in that: The positioning structure (31) includes a plurality of positioning protrusions, which protrude from the inner wall of the positioning cylinder (3) toward the center, and the length direction of the positioning protrusions is set along the length direction of the positioning cylinder (3); Several positioning protrusions are evenly distributed along the circumference of the positioning cylinder (3) on the inner sidewall of the positioning cylinder (3); the edge of the stamping of the iron core (100) is provided with a welding groove (101), and the positioning protrusions are adapted to the welding groove (101).
6. The lamination stacking fixture according to any one of claims 1-3, characterized in that: The support base (1) is provided with a third mounting hole (11) and a fourth mounting hole (12). The fourth mounting hole (12) is located around the third mounting hole (11). The third mounting hole (11) is used to connect with the positioning column (2), and the fourth mounting hole (12) is used to connect with the positioning cylinder (3).
7. The lamination stacking fixture according to claim 6, characterized in that: The support base (1) is provided with a first contour groove on the side wall of the positioning column (2), and the end face of the positioning column (2) is adapted to the first contour groove.
8. The lamination stacking fixture according to claim 6, characterized in that: The support base (1) is provided with a second contour groove on the side wall of the positioning cylinder (3), and the end face of the positioning cylinder (3) connected to the support base (1) is adapted to the second contour groove.
9. The lamination stacking fixture according to claim 8, characterized in that: The second contour groove is provided with a first magnetic material, and the end face of the positioning cylinder (3) connected to the support base (1) is provided with a second magnetic material. The first magnetic material and the second magnetic material have opposite magnetic properties.
10. A motor production system characterized by comprising: Includes the lamination stacking fixture as described in any one of claims 1-9.