Motor rotor iron core press fitting tool

Abstract

The utility model relates to the technical field of rotor iron core press fitting, in particular to a motor rotor iron core press fitting tool. Comprising a bottom plate, a mounting frame and a workpiece supporting block, a press and a press-fitting head are arranged on the mounting frame, the workpiece supporting block is composed of a base, a quick release seat and an in-place abutting seat, the in-place abutting seat is detachably mounted in a center groove of the base, a mounting ring is arranged at the top of the base, and an annular groove matched with the mounting ring is formed in the bottom of the quick release seat. A limiting guide groove is formed in the outer side wall of the mounting ring, a first limiting block sliding in the limiting guide groove is arranged in the ring groove, a plug pin horizontally sliding with the mounting ring is further arranged on the outer side of the quick release seat, and multiple bearing steps are arranged in the center of the quick release seat. According to the invention, adaptation of rotor cores of different models can be rapidly completed, the reloading efficiency is improved, horizontal offset is prevented through cooperation of the rectangular plug pins and the slots, displacement deviation during press fitting is completely eradicated through double constraints, the quick release design is reliable in connection, and loosening caused by vibration or high-frequency operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rotor core pressing technology, specifically to a motor rotor core pressing tool. Background Technology

[0002] In the press-fitting of motor rotor cores, the support blocks used to support the rotor cores have poor adaptability. When changing to different models of rotor cores, it is necessary to disassemble the connecting parts at the bottom of the equipment, which is cumbersome and time-consuming, seriously affecting production efficiency. The support blocks lack stability after installation, and during the press-fitting process, vertical or horizontal sliding can easily cause positioning deviations, affecting press-fitting accuracy and even causing damage to the rotor core or mandrel. In high-frequency press-fitting or vibration environments, the connection reliability is poor when the support blocks are frequently replaced. These problems restrict the efficiency and accuracy of motor rotor core press-fitting, making it difficult to meet the needs of large-scale, multi-model production. Utility Model Content

[0003] Therefore, it is necessary to provide a motor rotor core pressing fixture to address the existing technical problems.

[0004] To solve the problems of the existing technology, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a motor rotor core pressing fixture, including a base plate and a mounting bracket mounted on it. The base plate is provided with a workpiece support block, and the mounting bracket is provided with a press. The output end of the press is provided with a pressing head, which is located directly above the workpiece support block. The workpiece support block is composed of a base, a quick-release seat, and a positioning contact seat. The base plate is provided with a first mounting hole for fixing the base. The center of the base is provided with a central groove. The positioning contact seat is detachably installed in the central groove. The top of the base is provided with a mounting ring. The bottom of the quick-release seat is provided with an annular groove that mates with the mounting ring. The outer wall of the mounting ring is provided with a limiting guide groove. The annular groove is provided with a first limiting block that slides within the limiting guide groove. The outer side of the quick-release seat is also provided with a pin that slides horizontally with the mounting ring. The center of the quick-release seat is provided with multiple bearing steps.

[0006] To prevent the quick-release bracket from sliding vertically between itself and the base during the pressing operation after it is installed on top of the base, which would affect the pressing accuracy, one end of the limiting guide groove is connected to the top of the mounting ring. The limiting guide groove extends downward in an arc along the outer wall of the mounting ring from the top of the mounting ring and is connected to a horizontal groove at the bottom.

[0007] Preferably, both the outer wall of the quick-release base and the mounting ring are provided with horizontally arranged slots, and the pin is locked to the outer wall of the quick-release base.

[0008] To further improve the locking connection between the quick-release bracket and the base, and to prevent the quick-release bracket from shifting from the base in the horizontal and vertical directions, the cross-section of the pin is rectangular, and the slot is exactly the same shape as the pin.

[0009] Since the pin is inserted horizontally into the slot, in order to prevent the pin from sliding out of the slot in the horizontal direction, the slot needs to be connected to the quick-release base. The end of the pin away from the center of the quick-release base is rotatably connected to a rotating post. The end of the rotating post is provided with a tightening seat. The rotating post is threadedly connected to the outer wall of the quick-release base.

[0010] In the first embodiment, the end of the pin away from the center of the quick-release seat is provided with a V-shaped symmetrical elastic metal plate, a locking pin is installed on the outer wall of the elastic metal plate, and the quick-release seat is provided with a locking hole that matches the locking pin.

[0011] Although the first embodiment can achieve the locking relationship between the pin and the quick-release seat, the threaded connection makes it cumbersome to install and remove, requiring a sufficient number of rotations to achieve the installation or removal effect. In order to improve the installation and removal efficiency while ensuring the connection is stable, the following second embodiment is provided: the end of the pin away from the center of the quick-release seat is provided with a V-shaped symmetrical elastic metal plate, a locking pin is installed on the outer wall of the elastic metal plate, and the quick-release seat is provided with a locking hole that matches the locking pin.

[0012] Preferably, the inner wall of the central groove is provided with an L-shaped groove, the outer wall of the positioning contact seat is provided with a second limiting block that slides with the L-shaped groove, the top of the vertical end of the L-shaped groove is connected to the top of the central groove on the base, and the top of the positioning contact seat is provided with a transmission groove.

[0013] Preferably, the mounting frame consists of a mounting back plate, mounting pads, and a support plate. The mounting back plate is vertically mounted on the base plate and has several second mounting holes. The press is fixedly mounted on the mounting back plate through the mounting pads and the second mounting holes. The support plate is fixedly connected to the mounting back plate and the base plate respectively.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. The workpiece support block consists of a base, a quick-release seat, and a stop seat. The quick-release seat is rapidly installed and removed via a limiting guide groove that engages with the first limiting block. The L-shaped groove engages with the second limiting block to facilitate quick replacement of the stop seat. Different rotor core models can be adapted simply by plugging and unplugging without disassembling the bottom of the equipment, significantly improving replacement efficiency. Simultaneously, the press height can be flexibly adjusted via the second mounting hole and mounting pad, adapting to various workpiece specifications and greatly enhancing its versatility.

[0016] 2. The horizontal groove at the bottom of the limit guide groove restricts the vertical sliding of the quick-release seat, and the rectangular pin cooperates with the slot to prevent horizontal offset. The double constraint eliminates displacement deviation during press-fitting. The locking mechanism of the pin (threaded connection or elastic metal plate and locking post cooperation) ensures reliable connection and avoids loosening caused by vibration or high-frequency operation. Attached Figure Description

[0017] Figure 1 A schematic diagram of a three-dimensional structure of a motor rotor core press-fitting fixture. Figure 1 ;

[0018] Figure 2 A schematic diagram of a three-dimensional structure of a motor rotor core press-fitting fixture. Figure 2 ;

[0019] Figure 3 This is a three-dimensional structural diagram of a workpiece support block in a motor rotor core press-fitting fixture;

[0020] Figure 4 This is a three-dimensional exploded view of a workpiece support block in a motor rotor core press-fitting fixture;

[0021] Figure 5 This is a three-dimensional structural diagram of the base and the positioning contact seat in a motor rotor core pressing fixture;

[0022] Figure 6 This is a cross-sectional view of an embodiment of a motor rotor core press-fitting fixture;

[0023] Figure 7 This is a three-dimensional structural diagram of the workpiece support block in Embodiment 2 of a motor rotor core pressing fixture;

[0024] Figure 8 This is a cross-sectional view of a second embodiment of a motor rotor core press-fitting fixture;

[0025] Figure 9 This is a schematic diagram of the pressure testing process in a motor rotor core pressing fixture.

[0026] The numbers on the map are:

[0027] 1. Base plate; 2. Mounting bracket; 3. Workpiece support block; 4. Press; 5. Press head; 6. Base; 7. Quick release seat; 8. Positioning contact seat; 9. First mounting hole; 10. Center groove; 11. Mounting ring; 12. Ring groove; 13. Limiting guide groove; 14. First limiting block; 15. Pin; 16. Multi-stage bearing step; 17. Horizontal groove; 18. Slot; 19. Rotating column; 20. Tightening seat; 21. Elastic metal plate; 22. Locking column; 23. Locking hole; 24. L-shaped groove; 25. Second limiting block; 26. Transmission groove; 27. Mounting back plate; 28. Mounting pad; 29. ​​Support plate; 30. Second mounting hole. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] like Figures 1-8 The invention relates to a motor rotor core pressing fixture, comprising a base plate 1 and a mounting bracket 2 mounted thereon. A workpiece support block 3 is mounted on the base plate 1, and a press 4 is mounted on the mounting bracket 2. A pressing head 5 is mounted at the output end of the press 4, located directly above the workpiece support block 3. The workpiece support block 3 consists of a base 6, a quick-release seat 7, and a positioning contact seat 8. The base plate 1 has a first mounting hole 9 for fixed connection to the base 6. A central groove 10 is located at the center of the base 6, and the positioning contact seat 8 is detachably mounted within the central groove 10. A mounting ring 11 is located at the top of the base 6, and an annular groove 12 at the bottom of the quick-release seat 7 mates with the mounting ring 11. A limiting guide groove 13 is located on the outer wall of the mounting ring 11, and a first limiting block 14 slides within the limiting guide groove 13 in the annular groove 12. A pin 15 that slides horizontally with the mounting ring 11 is also located on the outer side of the quick-release seat 7, and a multi-level bearing step 16 is located at the center of the quick-release seat 7.

[0030] During the press-fitting operation, the workpiece support block 3 is first adjusted according to the model and size of the rotor core to be processed. By quickly disassembling and assembling the quick-release seat 7 and the positioning contact seat 8 located on the base 6, the workpiece support block 3 can quickly match the press-fitting requirements of different types of rotor cores. This method has a fast and efficient workpiece support block 3 replacement function. Since the workpiece support block 3 is installed on the base plate 1 through the first mounting hole 9, this method avoids the operation of opening the equipment and going under the base plate 1 to remove the workpiece support block 3 and connect it to the new workpiece support block 3. Replacement can be achieved directly through a simple plug-and-play operation. When replacing the quick-release seat 7, first disconnect the pin 15 from the mounting ring 11, allowing the quick-release seat 7 to move relative to the mounting ring 11 and the base 6. Following the direction of the limiting guide groove 13, the first limiting block 14 can be removed from the limiting guide groove 13, thus completing the connection between the quick-release seat 7 and the base 6. Replace with a matching quick-release seat 7; its internal multi-stage bearing steps 16 can support the rotor core to be processed and can match different outer diameters of the mandrel. The installation process can be achieved by reversing the operation. After installing the workpiece support block 3, place the rotor core and mandrel inside the workpiece support block 3. When the press 4 operates, it drives the pressing head 5 downwards. The pressing head 5 presses against the top of the mandrel and moves downwards until the mandrel is completely pressed into the rotor core, completing the pressing operation.

[0031] like Figure 9 As shown, this pressing fixture detects the working pressure of the pressing head 5 installed on the press 4 through a pressure sensor, monitors and provides feedback on the pressing force in real time, and detects the displacement distance of the mandrel through a displacement sensor, so as to detect and provide feedback on the displacement in real time, thereby ensuring that the pressing pressure value and the displacement are synchronized and achieving precise pressing operation.

[0032] like Figure 4 and Figure 6As shown, in order to prevent the quick-release seat 7 from sliding vertically with the base 6 during the pressing operation after the quick-release seat 7 is installed above the base 6, which would affect the pressing accuracy, one end of the limiting guide groove 13 is connected to the top of the mounting ring 11. The limiting guide groove 13 extends downward in an arc along the outer wall of the mounting ring 11 from the top of the mounting ring 11 and is connected to a horizontal groove 17 at the bottom of the groove.

[0033] By setting a horizontal groove 17 at the bottom of the limiting guide groove 13, the first limiting block 14 located in the horizontal groove 17 can be locked vertically to prevent its vertical displacement and avoid the quick release seat 7 from sliding vertically during the pressing operation.

[0034] Both the outer wall of the quick-release base 7 and the mounting ring 11 are provided with horizontally arranged slots 18, and the pins 15 are locked to the outer wall of the quick-release base 7.

[0035] The pin 15 is inserted into the quick-release base 7 and the mounting ring 11 through the slot 18 to lock the mounting ring 11 and the quick-release base 7. If the first limiting block 14 does not slide into the limiting guide groove 13, the two slots 18 are not aligned and the pin 15 cannot be fully inserted, so it can be quickly determined whether the quick-release base 7 is installed in place.

[0036] To further improve the locking connection between the quick-release bracket 7 and the base 6, and to prevent the quick-release bracket 7 from shifting from the base 6 in the horizontal and vertical directions, the cross-section of the pin 15 is rectangular, and the slot 18 has the same shape as the pin 15.

[0037] By designing the pin 15 as a rectangle with its four sides in a horizontal and vertical position respectively, the locking effect of the pin 15 is further improved, avoiding the occurrence of displacement, and maintaining a stable and reliable connection during press-fitting, vibration, or long-term operation.

[0038] Since the pin 15 is inserted horizontally into the slot 18, in order to prevent the pin 15 from sliding out of the slot 18 in the horizontal direction, the slot 18 needs to be connected to the quick-release seat 7. The end of the pin 15 away from the center of the quick-release seat 7 is rotatably connected to the rotating post 19. The end of the rotating post 19 is provided with a tightening seat 20. The rotating post 19 is threadedly connected to the outer wall of the quick-release seat 7.

[0039] like Figures 1-6 As shown, in the first embodiment of this utility model, the operator drives the rotating column 19 to rotate at the end of the pin 15 by turning the tightening seat 20. Since the rotating column 19 is threadedly connected to the outer wall of the quick-release seat 7, the rotating column 19 and the pin 15 will be displaced in the horizontal direction when rotating, which can realize the installation and removal of the pin 15, and realize the locking function between the pin 15 and the quick-release seat 7.

[0040] Although the first embodiment can achieve the locking relationship between the pin 15 and the quick-release seat 7, the threaded connection makes it cumbersome to install and remove, requiring a sufficient number of rotations to achieve the installation or removal effect. In order to improve the installation and removal efficiency while ensuring the connection is stable, the following second embodiment is provided: the end of the pin 15 away from the center of the quick-release seat 7 is provided with a V-shaped symmetrical elastic metal plate 21, a locking post 22 is installed on the outer wall of the elastic metal plate 21, and the quick-release seat 7 is provided with a locking hole 23 that matches the locking post 22.

[0041] like Figures 7-8 As shown, in the second embodiment, the operator can press the elastic metal plate 21, causing the elastic metal plates 21 on both sides to move towards the central symmetrical plane. At this time, the locking pin 22 retracts, and the elastic metal plate 21 and the locking pin 22 can be inserted into the slot 18 of the quick-release seat 7. After the pin 15 is in place, the elastic metal plate 21 is released, and it deflects outward under the action of the elastic force, pushing the locking pin 22 connected to its side wall into the locking hole 23 to achieve a quick locking connection.

[0042] like Figure 5 and Figure 6 As shown, an L-shaped groove 24 is provided on the inner wall of the central groove 10, and a second limiting block 25 is provided on the outer wall of the positioning contact seat 8 to slide and cooperate with the L-shaped groove 24. The top of the vertical end of the L-shaped groove 24 is connected to the top of the central groove 10 on the base 6, and a transmission groove 26 is provided on the top of the positioning contact seat 8.

[0043] The second limiting block 25 cooperates with the L-shaped groove 24 to achieve a quick-release connection between the positioning contact seat 8 and the center groove 10 of the base 6.

[0044] like Figure 1 and Figure 2 As shown, the mounting frame 2 consists of a mounting back plate 27, a mounting pad 28, and a support plate 29. The mounting back plate 27 is vertically mounted on the base plate 1. The mounting back plate 27 is provided with several second mounting holes 30. The press 4 is fixedly mounted on the mounting back plate 27 through the mounting pad 28 and the second mounting holes 30. The support plate 29 is fixedly connected to the mounting back plate 27 and the base plate 1 respectively.

[0045] The press 4 is mounted on the mounting back plate 27 via mounting pads 28. Several second mounting holes 30 allow the operator to adjust the connection height of the press 4. A support plate 29 is used to enhance the connection stability between the press 4 and the base 6.

[0046] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tooling for pressing a motor rotor core, characterized in that, Includes a base plate (1) and a mounting bracket (2) mounted on it. The base plate (1) is provided with a workpiece support block (3). The mounting bracket (2) is provided with a press (4). The output end of the press (4) is provided with a pressing head (5). The pressing head (5) is located directly above the workpiece support block (3). The workpiece support block (3) is composed of a base (6), a quick-release seat (7), and a positioning contact seat (8). The base plate (1) is provided with a first mounting hole (9) for fixing the base (6). The base (6) is provided with a central groove (10) at its center. The seat (8) is detachably installed in the center groove (10). The top of the base (6) is provided with an installation ring (11). The bottom of the quick-release seat (7) is provided with an annular groove (12) that cooperates with the installation ring (11). The outer wall of the installation ring (11) is provided with a limiting guide groove (13). The annular groove (12) is provided with a first limiting block (14) that slides in the limiting guide groove (13). The outer side of the quick-release seat (7) is also provided with a pin (15) that slides horizontally with the installation ring (11). The center of the quick-release seat (7) is provided with a multi-level bearing step (16).

2. The motor rotor core pressing fixture according to claim 1, characterized in that, One end of the limiting guide groove (13) is open and connected to the top of the mounting ring (11). The limiting guide groove (13) extends downward along the outer side wall of the mounting ring (11) from the top of the mounting ring (11) and is connected to a horizontal groove (17) at the bottom of the groove.

3. The motor rotor core pressing fixture according to claim 2, characterized in that, The quick-release base (7) and the mounting ring (11) are provided with horizontally arranged slots (18), and the pin (15) is locked to the outer wall of the quick-release base (7).

4. The motor rotor core pressing fixture according to claim 3, characterized in that, The cross-section of the pin (15) is rectangular, and the slot (18) has the same shape as the pin (15).

5. The motor rotor core pressing fixture according to claim 4, characterized in that, The end of the pin (15) away from the center of the quick release seat (7) is rotatably connected to a rotating column (19), and the end of the rotating column (19) is provided with a tightening seat (20). The rotating column (19) is threadedly connected to the outer wall of the quick release seat (7).

6. The motor rotor core pressing fixture according to claim 4, characterized in that, The end of the pin (15) away from the center of the quick release seat (7) is provided with a V-shaped symmetrical elastic metal plate (21), and a locking pin (22) is installed on the outer wall of the elastic metal plate (21). The quick release seat (7) is provided with a locking hole (23) that matches the locking pin (22).

7. The motor rotor core pressing fixture according to claim 1, characterized in that, The inner wall of the center groove (10) is provided with an L-shaped groove (24), and the outer wall of the positioning contact seat (8) is provided with a second limiting block (25) that slides with the L-shaped groove (24). The top of the vertical end of the L-shaped groove (24) is connected to the top of the center groove (10) on the base (6), and the top of the positioning contact seat (8) is provided with a transmission groove (26).

8. The motor rotor core pressing fixture according to claim 1, characterized in that, The mounting bracket (2) consists of a mounting back plate (27), mounting pads (28) and a support plate (29). The mounting back plate (27) is vertically mounted on the base plate (1). The mounting back plate (27) has several second mounting holes (30). The press (4) is fixedly mounted on the mounting back plate (27) through the mounting pads (28) and the second mounting holes (30). The support plate (29) is fixedly connected to the mounting back plate (27) and the base plate (1) respectively.

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