New energy motor stator flat wire 2D forming testing fixture

Abstract

The utility model discloses a new energy motor stator flat wire 2D forming testing fixture, which comprises a base and a supporting part located at one side of the base, the base is provided with a profiling groove matched with a flat wire, the supporting part is used for horizontally placing legs of the flat wire, the lower part of the base is provided with a bottom groove which is located below the profiling groove and is parallel to the profiling groove, and the bottom groove is provided with a positioning groove. A positioning block which is flush with the upper surface of the supporting part and is used for supporting the head of the flat wire is arranged in the bottom groove, and a plurality of displacement sensors for detecting the longitudinal distance of the flat wire in the profiling groove are arranged in the bottom groove. According to the utility model, the forming degree of the flat wire can be detected, the accuracy of the forming degree of the flat wire can be judged through the longitudinal distance between each displacement sensor and the flat wire, and the detection accuracy of the flat wire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flat wire motor stator detection, in particular to a 2D forming fixture for flat wires of a new energy motor stator. Background Art

[0002] As the name implies, a flat wire motor is a drive motor that uses flat wires for winding. Flat wire motors are currently widely used in the automotive field because the motor stator using flat wires as windings has a high copper fill factor, can improve the power density of the motor, and is commonly used in new energy vehicles. In a flat wire motor stator, the flat wire is processed into a U-shaped shape according to a predetermined length, and multiple flat wires are respectively inserted along the respective slots of the motor stator through a flat wire insertion device. Before the flat wire winding of the motor stator, the produced 2D coils of the flat wires of the motor stator need to be subjected to forming detection because the shape requirements for the 2D forming of the flat wires of the motor stator are relatively high, which directly affects the 3D forming shape after the flat wire winding of the motor stator.

[0003] Previously, the forming detection of the flat wires of a new energy motor stator was often carried out by a vision system. After the forming degree of the flat wires was detected by the vision detection system, the flat wires with good forming degree were retained, and the flat wires with poor forming degree were directly removed. However, the equipment cost of the vision detection system is relatively high, and there is a relatively high false alarm rate, which affects the forming detection effect of the flat wires of the motor stator. Summary of the Utility Model

[0004] In order to solve the technical problems existing in the prior art that the equipment cost of the vision detection system is relatively high, there is a relatively high false alarm rate, and it affects the forming detection effect of the flat wires of the motor stator, the utility model provides the following technical solutions.

[0005] A 2D forming fixture for flat wires of a new energy motor stator of the utility model includes a base and a support part located on one side of the base. The base is provided with a profiling groove matching the flat wire. The support part is used for horizontally placing the legs of the flat wire. A bottom groove parallel to the profiling groove is provided below the profiling groove at the lower part of the base. A positioning block for supporting the head of the flat wire and flush with the upper surface of the support part is arranged in the bottom groove. A plurality of displacement sensors for detecting the longitudinal distance of the flat wire in the profiling groove are arranged in the bottom groove.

[0006] As a further technical solution, the displacement sensors are arranged at the bottom of the bottom groove and uniformly arranged along the horizontal direction of the profiling groove. Each displacement sensor is connected to an external control system.

[0007] As a further technical solution, at least three sets of first guide plate groups, second guide plate groups, and third guide plate groups with the same structure and not on the same straight line are arranged on both sides above the profiling groove at the upper part of the base.

[0008] As a further technical solution, the first guide plate group is located above the head after the flat wire is placed in the profiling groove, and the second guide plate group and the third guide plate group are located on both sides of the first guide plate group.

[0009] As a further technical solution, the first guide plate group includes two plate bodies arranged oppositely, and the upper ends of the opposite sides of the two plate bodies are rounded.

[0010] As a further technical solution, the profiling groove profiles the groove shape on the base according to the shape of the flat wire, and a corresponding gap is added according to the tolerance.

[0011] The beneficial effects of the present utility model are as follows. The inspection tool of the present utility model can detect the forming degree of the flat wire. The inspection tool includes a base and a support part located on one side of the base. The base is provided with a profiling groove matching the flat wire. The profiling groove profiles the groove shape on the base according to the shape of the flat wire, and a corresponding gap is added according to the tolerance. The support part is used for horizontally placing the legs of the flat wire. If the formed flat wire can be flexibly placed in the inspection tool, it is considered that its linear shape is qualified. At the same time, a bottom groove parallel to the profiling groove is arranged below the profiling groove. The bottom groove is provided with positioning blocks flush with the upper surface of the support part. The bottom groove is provided with a plurality of displacement sensors for detecting the longitudinal distance of the flat wire in the profiling groove. The accuracy of the forming degree of the flat wire can be judged by the longitudinal distance between each displacement sensor and the flat wire, improving the detection accuracy of the flat wire. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the 2D forming inspection tool for the flat wire of the new energy motor stator of the present utility model;

[0013] Figure 2 is a schematic sectional view of the base of the 2D forming inspection tool for the flat wire of the new energy motor stator of the present utility model;

[0014] Figure 3 is a schematic diagram of the shape of the flat wire of the new energy motor stator detected by the present utility model;

[0015] In the figure: 1 - base; 101 - profiling groove; 102 - bottom groove; 2 - support part; 3 - first guide plate group; 4 - second guide plate group; 5 - third guide plate group; 6 - positioning block; 7 - displacement sensor; 8 - flat wire; 801 - head; 802 - leg. Detailed Embodiments

[0016] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0017] In the description of the present utility model, it should be understood that the terms "upper", "lower", and "both sides" are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0018] As Figure 1 、 Figure 2 and Figure 3 shown, a 2D forming inspection tool for the flat wire of a new energy motor stator according to the present utility model is used to detect the forming degree of the flat wire 8. It includes a base 1 and a support part 2 located on one side of the base 1. The support part 2 is used to support the leg 802 of the flat wire 8, and the base 1 is used to perform forming inspection on other parts of the flat wire 8 except the leg 802. The base 1 and the support part 2 can be integrally formed or composed of two independent plates connected to each other.

[0019] In a preferred embodiment, the base 1 is provided with a profiling groove 101 that matches the flat wire 8. Specifically, the profiling groove 101 is used to place other parts of the flat wire 8 except the leg 802. The inspector can hold the flat wire 8 by hand or use an existing clamping component to clamp the flat wire 8, and longitudinally place the flat wire 8 downward into the profiling groove 101. After placement, the leg 802 is located above the support part 2. Among them, the profiling groove 101 profiles a groove shape on the base 1 according to the shape of the flat wire 8 and adds a corresponding gap according to the tolerance. When inspecting the flat wire 8, if the formed flat wire can be flexibly placed into the inspection tool, it is considered that its linear shape is qualified and the forming degree is qualified.

[0020] In a preferred embodiment, at least three sets of first guide plate groups 3, second guide plate groups 4, and third guide plate groups 5 with the same structure and not on the same straight line are provided on both sides above the profiling groove 101 on the upper part of the base 1. The first guide plate group 3, second guide plate group 4, and third guide plate group 5 not on the same straight line are beneficial to smoothly placing the flat wire 8 into the profiling groove 101. In this embodiment, the first guide plate group 3 is located above the head 801 of the flat wire 8 after it is placed in the profiling groove 101, and the second guide plate group 4 and the third guide plate group 5 are located on both sides of the first guide plate group 3. The first guide plate group 3, second guide plate group 4, and third guide plate group 5 have the same structure and only different installation positions. Only the first guide plate group 3 will be introduced here. The first guide plate group 3 includes two relatively arranged plate bodies, and the upper ends of the opposite sides of the two plate bodies are rounded to facilitate the smooth placement of the flat wire 8.

[0021] In a preferred embodiment, the horizontal outlet of the profiling groove 101 faces the support part 2, and the support part 2 is used for horizontally placing the leg 802 of the flat wire 8. A bottom groove 102 parallel to the profiling groove 101 is provided below the profiling groove 101 at the lower part of the base 1. A positioning block 6 for supporting the head 801 of the flat wire 8 and flush with the upper surface of the support part 2 is provided in the bottom groove 102, that is, the upper surface of the positioning block 6 is flush with the bottom surface of the profiling groove 101. A plurality of displacement sensors 7 for detecting the longitudinal distance of the flat wire 8 in the profiling groove 101 are provided in the bottom groove 102. The displacement sensors 7 are arranged at the bottom of the bottom groove 102 and evenly arranged along the horizontal direction of the profiling groove 101. Each displacement sensor 7 is connected to an external control system. After the flat wire 8 is flexibly placed in the profiling groove 101, its leg 802 abuts against the support part 2, and its head 801 abuts against the upper surface of the positioning block 6. At this time, the displacement sensors 7 can detect the longitudinal distance from the flat wire 8. When the distances from a plurality of displacement sensors 7 to the flat wire 8 are the same, it can be considered that the linear shape and forming degree of the flat wire 8 are qualified.

[0022] The above specifically describes the preferred embodiments and examples of the present invention in conjunction with the drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent replacements can be made without departing from the concept of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A 2D forming fixture for stator flat wire of new energy motor, characterized by: The invention comprises a base (1) and a support portion (2) located on one side of the base (1), wherein the base (1) is provided with a profiling groove (101) matching with a flat wire (8), the support portion (2) is used for horizontally placing the leg portion (802) of the flat wire (8), the lower portion of the base (1) is provided with a bottom groove (102) located below the profiling groove (101) and parallel to the profiling groove (101), a positioning block (6) is provided in the bottom groove (102) and is flush with the upper surface of the support portion (2) and is used to support the head portion (801) of the flat wire (8), and a plurality of displacement sensors (7) are provided in the bottom groove (102) for detecting the longitudinal distance of the flat wire (8) in the profiling groove (101).

2. The new energy motor stator flat wire 2D forming inspection fixture according to claim 1 is characterized by: The displacement sensors (7) are arranged at the bottom of the bottom groove (102) and are evenly arranged along the horizontal direction of the contoured groove (101), and each displacement sensor (7) is connected to an external control system.

3. The new energy motor stator flat wire 2D forming inspection fixture according to claim 1 is characterized by: At least three groups of first guide plate groups (3), second guide plate groups (4) and third guide plate groups (5) having the same structure and not in the same straight line are provided on both sides of the upper part of the base (1) above the profiling groove (101).

4. The 2D forming fixture for the stator flat wire of a new energy motor according to claim 3 is characterized in that: The first guide plate group (3) is located above the head (801) after the flat wire (8) is placed in the contoured groove (101), and the second guide plate group (4) and the third guide plate group (5) are located on both sides of the first guide plate group (3).

5. The new energy motor stator flat wire 2D forming inspection fixture according to claim 3 is characterized by: The first guide plate group (3) comprises two plate bodies arranged opposite to each other, and the upper end seats on the opposite sides of the two plate bodies are rounded.

6. The new energy motor stator flat wire 2D forming inspection fixture according to claim 1 is characterized by: The profiling groove (101) is formed into a groove shape on the base (1) according to the shape of the flat wire (8), and a corresponding gap is added according to the tolerance.

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