Independent notching die for stator and rotor punching sheets of permanent magnet motor

Abstract

The utility model discloses an independent notching die for stator and rotor punching sheets of a permanent magnet motor, which relates to the technical field of notching dies for motor punching sheets and comprises a tray arranged above a positioning plate and used for limiting a sample sheet; the key groove male die is arranged in the middle of the fixing plate, and the key groove male die is used for stamping the sample wafer; and the female die is arranged on the surface of the positioning plate, and the female die is used for providing a groove profile when the sample wafer is stamped. According to the utility model, the cost of singly punching a groove-shaped die is reduced, the production cycle of the die is shorter, compared with a single punching die arranged on a servo-driven high-speed notching press, the efficiency is higher, the operation of staff is more convenient, the installation of the die is quicker, the secondary size measurement is not needed, the precision is higher, and the consistency of products is better.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor lamination slotting molds, specifically a mold for individually slotting stator and rotor laminations of permanent magnet motors. Background Technology

[0002] The market demand for high-speed stamping dies is driven by multiple industries, especially the automotive manufacturing sector. Permanent magnet motor stator and rotor lamination dies are one of the important application areas for high-speed stamping dies, with a significant demand. With the rapid development of my country's permanent magnet motor industry, the corresponding die market capacity is continuously expanding, and the market share of various types of permanent magnet motor products is gradually increasing.

[0003] Existing technologies have the following shortcomings: Traditional servo-driven high-speed punching machines for single-pump rotor lamination keyways and single-pump rotor lamination wire grooves require the die to punch the groove once, and the positioning cone shaft of the punch press itself needs to rotate once before the lamination can be removed. Furthermore, each time the die is installed, the measurement personnel need to repeatedly check whether the lamination groove shape meets the drawing requirements and continuously adjust the punch press to make it meet the drawing requirements. This places high demands on the measurement personnel and is also not good for product consistency. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a separate slotting mold for the stator and rotor laminations of a permanent magnet motor.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a separate slotting die for the stator and rotor laminations of a permanent magnet motor, comprising:

[0006] A tray, positioned above a positioning plate, is used to limit the position of the sample.

[0007] A keyway punch is disposed in the middle of a fixed plate and is used to punch a sample.

[0008] A die, which is disposed on the surface of a positioning plate, is used to provide a groove shape when stamping a sample.

[0009] Preferably, the surface of the tray is provided with multiple sets of limiting pins for limiting the sample piece;

[0010] The fixing plate is connected to the middle of the keyway punch with an interference fit. The keyway punch is provided with a lifting pin, which passes through one side of the fixing plate and through the lifting pin hole for positioning.

[0011] Preferably, the bottom surface of the concave mold is in contact with the top surface of one side of the positioning plate, and the bottom surface of the positioning plate is in contact with the top surface of the base.

[0012] Preferably, two sets of transverse positioning holes are provided on both sides of the die cavity, and two sets of transverse positioning holes are provided on both sides of the end of the positioning plate that is in contact with the die cavity. The die cavity and the positioning plate are positioned and connected by a positioning pin. The base, the positioning plate and the die cavity are all provided with threaded holes and are threaded and locked by an internal hex screw.

[0013] Preferably, both the tray and the positioning plate are provided with two sets of longitudinal positioning holes and are dimensionally positioned by positioning pin two. Both the tray and the positioning plate are provided with two sets of threaded holes and are threadedly connected by hexagon socket bolt one. The tray is provided with a central positioning post, and one side of the central positioning post is threadedly locked by hexagon socket bolt two that penetrates the positioning plate.

[0014] Preferably, it also includes a discharge plate, the top of which is fixedly connected to two sets of rubber pads, and the side of the rubber pads away from the discharge plate is fixedly connected to the bottom of the fixing plate, and the top of the fixing plate is provided with a mold handle.

[0015] Preferably, both the fixing plate and the mold handle are provided with two sets of threaded holes and are connected by an internal hexagon screw.

[0016] Preferably, both the unloading plate and the die have a punch groove in the middle, the keyway punch has the same size as the punch groove, and the keyway punch and the punch groove are arranged in parallel.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This utility model reduces the cost of a separate punching mold for slotting, and the production cycle of the mold is shorter. Compared with a single punching mold installed on a servo-driven high-speed punching machine, it is more efficient, easier for employees to operate, faster to install, and does not require secondary measurement of dimensions. It has higher precision and better product consistency.

[0019] (2) This utility model is applicable to open-type tilting presses, does not occupy servo-driven high-speed punching machines, saves the space occupied by punching machines, and shortens the product cycle. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 This is a top view of the fixing plate and keyway punch of this utility model;

[0023] Figure 4 This is a top view of the positioning plate of this utility model;

[0024] Figure 5 This is a top view of the concave mold of this utility model;

[0025] Figure 6 This is a top view of the unloading plate of this utility model;

[0026] Figure 7 This is a top view of the sample of this utility model.

[0027] In the diagram: 1. Base; 2. Positioning plate; 3. Die; 4. Stripper plate; 5. Rubber pad; 6. Fixing plate; 7. Die handle; 8. Keyway punch; 9. One hex socket head cap screw; 10. One locating pin; 11. Two hex socket head cap screws; 12. Tray; 13. Two locating pins; 14. One hex socket head cap bolt; 15. Center locating post; 16. Two hex socket head cap bolts; 17. Sample piece. Detailed Implementation

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

[0029] Example

[0030] Please see Figure 1 - Figure 7 This application provides a separate slotting die for the stator and rotor laminations of a permanent magnet motor, comprising:

[0031] Tray 12 is positioned above positioning plate 2 and is used to limit the position of sample 17.

[0032] Keyway punch 8 is located in the middle of the fixed plate 6 and is used to punch the sample 17.

[0033] Die 3 is disposed on the surface of positioning plate 2 and is used to provide a groove shape when stamping sample 17.

[0034] In this embodiment, preferably, the surface of the tray 12 is provided with multiple sets of limiting pins for limiting the sample 17;

[0035] The fixing plate 6 is connected to the keyway punch 8 with an interference fit in the middle. The keyway punch 8 is provided with a lifting pin, which passes through one side of the fixing plate 6 and through the lifting pin hole for positioning.

[0036] It should be noted that the sample 17 is provided with a limiting hole that connects to the tray 12 and is in the same position to facilitate connection.

[0037] In this embodiment, preferably, the bottom surface of the die 3 is in contact with the top surface of one side of the positioning plate 2, and the bottom surface of the positioning plate 2 is in contact with the top surface of the base 1.

[0038] In this embodiment, preferably, two sets of transverse positioning holes are provided on both sides of the die 3, and two sets of transverse positioning holes are provided on both sides of the end of the positioning plate 2 that is in contact with the die 3. The die 3 and the positioning plate 2 are positioned and connected by positioning pin 10. The base 1, the positioning plate 2 and the die 3 are all provided with threaded holes and are threaded and locked by internal hexagon screw 11.

[0039] It should be noted that the base 1 is the supporting foundation of the mold. It is a square plate structure with a flat bottom, which makes it easy to fix on the punch press worktable.

[0040] In this embodiment, preferably, both the tray 12 and the positioning plate 2 are provided with two sets of longitudinal positioning holes and are dimensionally positioned by positioning pin 2 13. Both the tray 12 and the positioning plate 2 are provided with two sets of threaded holes and are threadedly connected by hexagon socket bolt 14. The tray 12 is provided with a central positioning post 15, and one side of the central positioning post 15 is threadedly locked by hexagon socket bolt 2 16 that penetrates the positioning plate 2.

[0041] In this embodiment, preferably, it also includes a discharge plate 4, with two sets of rubber pads 5 fixedly connected to the top of the discharge plate 4, and the side of the rubber pads 5 away from the discharge plate 4 fixedly connected to the bottom of the fixing plate 6, with a mold handle 7 provided on the top of the fixing plate 6.

[0042] It should be noted that the rubber pad 5 is designed to provide cushioning and shock absorption to protect the mold.

[0043] In this embodiment, preferably, both the fixing plate 6 and the mold handle 7 are provided with two sets of threaded holes and are connected by an internal hex screw 9.

[0044] In this embodiment, preferably, both the unloading plate 4 and the die 3 are provided with a punch groove in the middle, the keyway punch 8 has the same size as the punch groove, and the keyway punch 8 and the punch groove are arranged in parallel.

[0045] Assembly principle: First, fix 1 on the punch press worktable, ensuring that 1 is horizontal and stable;

[0046] The die 3 is connected to the base 1 by an internal hex bolt 11. The die 3 has two transverse positioning pin holes, which are aligned with the corresponding holes on the positioning plate 2.

[0047] Positioning plate 2 is laterally positioned with die 3 by positioning pin 10 to ensure that the relative dimensions between the two meet the requirements of the drawing. Then, it is tightened and fixed by internal hex bolts 11 under base 1.

[0048] The pallet 12 is longitudinally positioned with the positioning plate 2 by the positioning pin 13 to ensure the accuracy of the relative dimensions between the pallet 12 and the positioning plate 2;

[0049] The tray 12 has two longitudinal threaded holes that are aligned with the clearance holes on the positioning plate 2. The tray 12 and the positioning plate 2 are connected and fixed by hex bolts 14.

[0050] A center positioning pin 15 is installed on the tray 12 and tightened and fixed by an internal hex bolt 16. The center positioning pin 15 and the positioning pin 13 together constitute the positioning device for the rotor disc.

[0051] The keyway punch 8 and the fixed plate 6 are interference-fitted to ensure a stable connection between them;

[0052] The keyway punch 8 is machined with a lifting pin hole, which is connected to the lifting pin to further enhance the connection between the keyway punch 8 and the fixed plate 6;

[0053] After the keyway punch 8 is connected to the fixing plate 6, special glue is used to fix it to prevent loosening;

[0054] Connect the fixing plate 6 to the mold shank 7 with the internal hex bolts 9 to ensure the accurate position of the keyway punch 8;

[0055] The stripper plate 4 is connected to the mold shank 7 with hex bolts to ensure a clearance fit between the stripper plate 4 and the keyway punch 8, which facilitates unloading.

[0056] Stamping principle: The rotor disc sample 17 to be stamped is placed on the tray 12 and positioned by the limiting pin. At the same time, it is precisely positioned by the central positioning column 15 and the positioning pin 13 to ensure that the position of the rotor disc meets the requirements of the drawing.

[0057] Adjust the stroke, pressure, and speed of the punch press according to the stamping requirements to ensure a stable stamping process;

[0058] Start the punch press. The die shank 7 drives the keyway punch 8 to move downward, and cooperates with the die 3 to complete the slot punching.

[0059] After stamping is completed, the stripper plate 4 removes the stamped material from the keyway punch 8 under the action of the rubber pad 5, ensuring the mold is clean;

[0060] The stamped rotor discs can be directly removed from tray 12 without waiting for the positioning cone shaft of the punch press to rotate;

[0061] Place the next rotor disc on the tray 12 and position it using the center positioning post 15 and positioning pin 13. Repeat the above stamping process until all rotor discs have been stamped.

[0062] It should be noted that the punch press is an external component and can be replaced by other machines with punching force for punching, not just the punch press mentioned in this article.

[0063] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A die for individually slotting stator and rotor laminations of a permanent magnet motor, characterized in that, include: A tray (12) is positioned above the positioning plate (2) and is used to limit the position of the sample piece (17). Keyway punch (8), the keyway punch (8) is disposed in the middle of the fixed plate (6), the keyway punch (8) is used to stamp the sample (17); A die (3) is disposed on the surface of a positioning plate (2) and is used to provide a groove shape when stamping a sample (17).

2. The separate slotting die for the stator and rotor laminations of a permanent magnet motor according to claim 1, characterized in that, The surface of the tray (12) is provided with multiple sets of limiting pins for limiting the sample piece (17); The fixing plate (6) is connected to the middle of the keyway punch (8) by interference fit. The keyway punch (8) is provided with a lifting pin, which passes through one side of the fixing plate (6) and through the lifting pin hole for positioning.

3. The separate slotting die for the stator and rotor laminations of a permanent magnet motor according to claim 1, characterized in that, The bottom surface of the die (3) is in contact with the top surface of one side of the positioning plate (2), and the bottom surface of the positioning plate (2) is in contact with the top surface of the base (1).

4. A separate slotting die for stator and rotor laminations of a permanent magnet motor according to claim 3, characterized in that, Two sets of transverse positioning holes are provided on both sides of the die (3). Two sets of transverse positioning holes are provided on both sides of the end of the positioning plate (2) that is in contact with the die (3). The die (3) and the positioning plate (2) are connected by a positioning pin (10). The base (1), the positioning plate (2) and the die (3) are all provided with threaded holes and are locked by internal hexagon screws (11).

5. A separate slotting die for stator and rotor laminations of a permanent magnet motor according to claim 1, characterized in that, Both the tray (12) and the positioning plate (2) are provided with two sets of longitudinal positioning holes and are positioned by positioning pin two (13). Both the tray (12) and the positioning plate (2) are provided with two sets of threaded holes and are connected by internal hex bolt one (14). The tray (12) is provided with a central positioning post (15), and one side of the central positioning post (15) is threadedly locked by internal hex bolt two (16) that penetrates the positioning plate (2).

6. A separate slotting die for stator and rotor laminations of a permanent magnet motor according to claim 1, characterized in that, It also includes a discharge plate (4), on the top of which two sets of rubber pads (5) are fixedly connected, and the side of the rubber pads (5) away from the discharge plate (4) is fixedly connected to the bottom of the fixing plate (6), and the top of the fixing plate (6) is provided with a mold handle (7).

7. A separate slotting die for stator and rotor laminations of a permanent magnet motor according to claim 6, characterized in that, Both the fixing plate (6) and the mold handle (7) are provided with two sets of threaded holes and are connected by an internal hexagon screw (9).

8. A separate slotting die for stator and rotor laminations of a permanent magnet motor according to claim 6, characterized in that, The unloading plate (4) and the die (3) are both provided with a punch groove in the middle. The keyway punch (8) has the same size as the punch groove and is arranged in parallel with the punch groove.

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