Tool for detecting the repeat accuracy of a winding machine

Abstract

The utility model provides a kind of tool for detecting the repeat accuracy of winding machine, comprising: detection gauge, detection gauge is cylindrical, the inner ring of detection gauge is equipped with multiple grooves, groove axial through detection gauge, groove is used for winding needle reciprocating motion therein, detection gauge is conductive material;Wire;Power supply, one end of power supply is used to pass through wire and winding needle conduction, the other end of power supply is used to pass through wire and detection gauge conduction;Current sensing device, current sensing device is connected in series on wire, for detecting whether there is current in wire.The utility model is easy to operate, can realize the dynamic detection to the repeat accuracy of winding machine, significantly improve the quality control ability of high-precision winding process.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a tooling for detecting the repeatability accuracy of a winding machine. Background Technology

[0002] As a core piece of equipment in the manufacture of electromagnetic devices such as motors and transformers, the operating accuracy of winding machines directly affects the forming quality and electrical performance of the winding coils. With the continuous improvement of slot fill factor, higher requirements are placed on the stability of the dynamic accuracy of winding machines. Slot fill factor specifically refers to the proportion of enameled wire actually filling the slots (grooves used to accommodate the winding coils) of the motor stator or rotor core. However, in the actual production process of internal winding machines, due to issues such as core straightness deviation and tooling wear, accuracy loss inevitably occurs after a period of use. This accuracy loss directly leads to the winding needles scraping against the core, and when winding high slot fill factor models, it easily causes process defects such as the winding needles scraping and wearing the enameled wire insulation layer (i.e., paint scratches), seriously affecting product qualification rate and reliability. Ultimately, this leads to batch paint scratch problems in high slot fill factor models, resulting in raw material waste and a surge in rework costs.

[0003] Currently, the industry's methods for testing the accuracy of winding machines are still mainly based on static calibration, with typical methods including using dial indicators and levels for static accuracy verification. These traditional methods have significant limitations: firstly, static testing cannot reflect the dynamic deviations of the equipment under high-speed winding conditions (such as time-varying factors like vibration and thermal deformation), leading to a disconnect between accuracy assessment and actual production conditions; secondly, the operation is cumbersome, requiring certain skills from operators, and is inefficient.

[0004] While some existing technologies propose dynamic accuracy compensation schemes based on laser interferometers or visual inspection, these schemes are costly and computationally complex, making them unsuitable for rapid deployment in industrial settings. Therefore, there is an urgent need to develop a simple, adaptable technology capable of repeatable accuracy testing of winding machines to overcome the limitations of traditional static inspection and improve the quality control capabilities of high-precision winding processes. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for detecting the repeatability of a winding machine. It is easy to operate and can realize dynamic detection of the repeatability of the winding machine, significantly improving the quality control capability of high-precision winding process.

[0006] To achieve the above objectives, this utility model provides a tooling for detecting the repeatability accuracy of a winding machine, comprising:

[0007] The test gauge is cylindrical, and its inner ring has multiple grooves that axially penetrate the test gauge. The grooves are used to allow a winding needle to reciprocate within them. The test gauge is made of conductive material.

[0008] wire;

[0009] A power supply, one end of which is used to conduct electricity to the winding needle through the wire, and the other end of which is used to conduct electricity to the detection gauge through the wire;

[0010] A current sensing device is connected in series with the conductor to detect whether there is current in the conductor.

[0011] Optionally, the grooves are evenly distributed in the inner ring of the inspection gauge and correspond one-to-one with the grooves of the iron core.

[0012] Optionally, the groove is a straight groove with two parallel groove walls. The distance between the two groove walls is greater than the outer dimension of the winding needle. At the same time, the distance between the two groove walls is adapted to the repeatability accuracy requirements of the winding machine.

[0013] Optionally, the tooling includes a rotating seat having an inner cavity for accommodating the inspection gauge, and the rotating seat can drive the inspection gauge to rotate. The rotating seat is also used to accommodate the iron core during winding.

[0014] Optionally, the rotating base is made of a conductive material, and the wire is connected to the rotating base to conduct electricity with the detection gauge.

[0015] Optionally, the inner wall of the rotating seat is provided with a positioning protrusion, and the outer peripheral surface of the detection gauge is provided with a positioning groove corresponding to the positioning protrusion.

[0016] Optionally, the rotating seat and the detection gauge are coaxial.

[0017] Optionally, the current sensing device includes an amplifier and a sensor.

[0018] Optionally, in the axial direction of the detection gauge, the thickness of the detection gauge is less than the range of movement of the winding needle during winding.

[0019] Optionally, the current sensing device is connected in series in the wire between the power supply and the detection gauge.

[0020] As configured above, when using the fixture of this invention to test the repeatability of a winding machine, the winding needle performs the movement required during winding, i.e., the winding needle moves up and down in the groove. Simultaneously, the rotating seat also rotates back and forth as during winding, thus simulating the winding process. Furthermore, the winding needle and the testing gauge are connected to the two ends of a power supply, simulating the small current supplied to the winding needle during winding machine operation. If the current sensing device detects current at the testing gauge end, it indicates that the winding needle has touched the testing gauge, and the repeatability of the winding machine does not meet the requirements. Conversely, if the current sensing device does not detect current, it indicates that the repeatability of the winding machine meets the requirements. In summary, the fixture of this invention for testing the repeatability of a winding machine is easy to operate, requires minimal operator skill, is low in cost, and highly adaptable. It overcomes the bottleneck of traditional static testing, enabling dynamic testing of the repeatability of the winding machine, significantly improving the quality control capability of high-precision winding processes, and increasing product qualification rate and reliability. Attached Figure Description

[0021] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0022] Figure 1 This is a schematic diagram of the inspection gauge of the tooling for inspecting the repeatability of a winding machine according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the tooling, winding needle, and winding arm for detecting the repeatability of a winding machine according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram showing the positions of the winding needle and the groove according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a tooling for testing the repeatability of a winding machine and multiple winding needles according to an embodiment of the present invention.

[0026] The reference numerals in the attached figures are as follows:

[0027] 1-Inspection gauge; 11-Groove; 12-Positioning groove; 2-Wire; 3-Power supply; 4-Current sensing device; 51-Winding arm; 52-Winding needle; 521-Mouth; 522-Rock; 6-Rotating seat. Detailed Implementation

[0028] In this document, unless otherwise stated, the terms “upper,” “lower,” “left,” “right,” “inner,” “outer,” “front,” “back,” “top,” “bottom,” etc., are used to indicate orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a characteristic orientation and operation, and therefore should not be construed as a limitation of the present invention.

[0029] The specific embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0030] The preferred embodiments of this utility model are given below with reference to the accompanying drawings and described in detail.

[0031] Figure 1 This is a schematic diagram of the inspection gauge of the tooling for inspecting the repeatability of a winding machine according to an embodiment of this utility model. Figure 2 This is a schematic diagram of the tooling, winding needle, and winding arm for detecting the repeatability of a winding machine according to an embodiment of this utility model. Please refer to it. Figure 1 and Figure 2 This utility model provides a fixture for detecting the repeatability of a winding machine. The repeatability of a winding machine refers to the consistency or deviation range of its key actions (such as conductor positioning, tension control, and wire trajectory) when the winding machine performs the same winding task multiple times consecutively. It is a core indicator for measuring the stability and reliability of the winding machine, directly affecting the coil forming quality, insulation performance, and final slot fill factor control. The fixture for detecting the repeatability of a winding machine includes a detection gauge 1, a conductor 2, a power supply 3, and a current sensing device 4.

[0032] The inspection gauge 1 is cylindrical, with a space in the middle for the winding arm 51 to pass through. The inner ring of the inspection gauge 1 has multiple grooves 11, which axially (i.e., axially) penetrate the inspection gauge 1. Furthermore, the grooves 11 are evenly distributed within the inner ring of the inspection gauge 1 and correspond one-to-one with the slots in the iron core. The winding needle 52 is mounted on the winding arm 51. The grooves 11 allow the winding needle 52 to reciprocate within them. When the winding arm 51 moves up and down, it drives the winding needle 52 to move up and down, and the movement path passes through the grooves 11. Preferably, the groove 11 is a straight groove with two parallel groove walls. The distance between the two groove walls (i.e., the groove width) is greater than the outer dimension of the winding needle 52. Simultaneously, the distance between the two groove walls is adapted to the repeatability accuracy requirements of the winding machine. Understandably, when testing the repeatability of the winding machine, the winding needle 52 also needs to move up and down as it does during winding. During testing, the up-and-down movement of the winding needle 52 must pass through the groove 11. Therefore, the distance between the two groove walls needs to be greater than the outer dimension of the winding needle 52 to ensure that when the repeatability of the winding machine meets the requirements, the winding needle 52 will not touch the testing gauge 1 during its movement. For example, as shown... Figure 3 As shown, the size of the opening 521 of the winding needle 52 is larger than the size of the rod 522 of the winding needle 52. Therefore, the distance h between the two groove walls needs to be greater than the size of the opening of the winding needle 52.

[0033] The specific distance between the two groove walls can be determined based on the repeatability requirements of the winding machine. If the repeatability requirement is low, the distance h between the two groove walls is set to be larger; if the repeatability requirement is high, the distance h between the two groove walls is set to be smaller. Furthermore, in the axial direction of the detection gauge 1, the thickness of the detection gauge 1 is less than the movement range of the winding needle 52 during winding. That is, the thickness of the detection gauge 1 must be within the range of the up-and-down movement of the winding needle 52 so that the winding needle 52 can perform the winding action.

[0034] The fixture includes a rotating base 6, which has an inner cavity for accommodating the inspection gauge 1. The rotating base 6 can drive the inspection gauge 1 to rotate, and the rotating base 6 and the inspection gauge 1 are coaxial. It can be understood that during normal winding operation, the rotating base 6 is also used to accommodate the iron core. The rotating base 6 cooperates with the winding machine to perform the winding operation on the iron core. Furthermore, the inner wall of the rotating base 6 is provided with positioning protrusions, and the outer circumferential surface of the inspection gauge 1 is provided with positioning grooves 12 corresponding to the positioning protrusions, thereby enabling the rotating base 6 to drive the inspection gauge 1 to rotate.

[0035] One end of the power supply 3 is used to conduct electricity to the winding needle 52 via the wire 2, and the other end of the power supply 3 is used to conduct electricity to the inspection gauge 1 via the wire 2. It is understood that both the winding needle 52 and the inspection gauge 1 are made of conductive materials, such as conductive metal. Furthermore, the winding needle 52 is typically mounted on the winding arm 51 of the winding machine, and the winding arm 51 is also made of conductive material. Therefore, one end of the power supply 3 can be connected to the winding needle 52 by connecting to the winding arm 51, for example, which can be made of copper. The rotating base 6 is made of conductive material, and the wire 2 is connected to the rotating base 6 to conduct electricity to the inspection gauge 1.

[0036] A current sensing device 4 is connected in series with the conductor 2 to detect whether there is current in the conductor 2. Furthermore, the current sensing device 4 is connected in series with the conductor 2 between the power supply 3 and the detection gauge 1. For example, the current sensing device 4 includes an amplifier and a sensor, such as a Hall sensor. In this embodiment, for safety reasons, when detecting the repeatability of the winding machine, the power supply 3 supplies a small current to the detection gauge 1. Because the current is small, an amplifier is used to amplify the current so that the Hall sensor can detect it.

[0037] This utility model has a wide range of applications. It can be applied not only to winding machines with a single winding needle 52, but also to winding machines with multiple winding needles 52. A groove 11 is designed to allow one winding needle 52 to pass through. Figure 2 For the case of a single winding needle 52, Figure 4 For the case of multiple winding needles 52, Figure 4 The winding arm 51 in the middle is also called the winding copper head.

[0038] With the above configuration, when using the tooling of this utility model to test the repeatability of the winding machine, the winding needle 52 is made to move during winding, that is, the winding needle 52 moves up and down in the groove 11. At the same time, the rotating seat 6 also rotates back and forth as during winding. Thus, the situation during winding is simulated. Furthermore, the winding needle 52 and the detection gauge 1 are respectively connected to the two ends of the power supply 3 to simulate the operation of the winding machine. The power supply 3 supplies a small current to the winding needle 52. If the current sensing device 4 senses the current at the end of the detection gauge 1, it indicates that the winding needle 52 has touched the detection gauge 1 and formed a circuit. The repeatability of the winding machine has not met the requirements. Conversely, if the current sensing device 4 does not sense the current, it indicates that the repeatability of the winding machine meets the requirements. In summary, the tooling for testing the repeatability of winding machines of this utility model is easy to operate, requires minimal operator skill, is inexpensive, and highly adaptable. It breaks through the bottleneck of traditional static testing, enabling dynamic testing of the repeatability of winding machines, significantly improving the quality control capability of high-precision winding processes, and increasing product qualification rate and reliability.

[0039] It should be noted that references to "an embodiment," "an embodiment," "a specific embodiment," "some embodiments," etc., in the specification only indicate that the described embodiment may include a specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a specific feature, structure, or characteristic is described in conjunction with an embodiment, whether explicitly described or not, implementing such a feature, structure, or characteristic in conjunction with other embodiments is within the knowledge of those skilled in the art.

[0040] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0041] It should also be noted that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention without departing from the scope of the present invention, or equivalent embodiments can be modified based on the disclosed technical content. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention shall still fall within the protection scope of the present invention.

[0042] It should also be understood that, unless otherwise specified or indicated, the terms “first,” “second,” “third,” etc., in the specification are used only to distinguish the various components, elements, and steps in the specification, and not to indicate the logical or sequential relationships between the various components, elements, and steps.

[0043] Furthermore, it should be recognized that the terminology described herein is used only to describe particular embodiments and not to limit the scope of the invention. It must be noted that the singular forms “a” and “an” used herein and in the appended claims include plural bases unless the context clearly indicates otherwise. For example, a reference to “a step” or “an apparatus” means a reference to one or more steps or apparatuses, and may include secondary steps and secondary apparatuses. All conjunctions used should be understood in the broadest sense. Also, the word “or” should be understood to have the definition of logical “or” rather than logical “exclusive OR”, unless the context clearly indicates otherwise. Furthermore, implementation of the methods and / or devices in embodiments of the invention may include performing selected tasks manually, automatically, or in combination.

Claims

1. A tooling for detecting the repeatability of a winding machine, characterized in that, include: The test gauge is cylindrical, and its inner ring has multiple grooves that axially penetrate the test gauge. The grooves are used to allow a winding needle to reciprocate within them. The test gauge is made of conductive material. wire; A power supply, one end of which is used to conduct electricity to the winding needle through the wire, and the other end of which is used to conduct electricity to the detection gauge through the wire; A current sensing device is connected in series with the conductor to detect whether there is current in the conductor.

2. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, The grooves are evenly distributed on the inner ring of the inspection gauge and correspond one-to-one with the grooves of the iron core.

3. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, The groove is a straight groove with two parallel groove walls. The distance between the two groove walls is greater than the outer dimension of the winding needle. At the same time, the distance between the two groove walls is adapted to the repeatability accuracy requirements of the winding machine.

4. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, The tooling includes a rotating seat with an inner cavity for accommodating the inspection gauge, and the rotating seat can drive the inspection gauge to rotate. The rotating seat is also used to accommodate the iron core during winding.

5. The tooling for detecting the repeatability of a winding machine as described in claim 4, characterized in that, The rotating base is made of conductive material, and the wire is connected to the rotating base to conduct electricity with the detection gauge.

6. The tooling for detecting the repeatability of a winding machine as described in claim 4, characterized in that, The inner wall of the rotating seat is provided with a positioning protrusion, and the outer peripheral surface of the detection gauge is provided with a positioning groove corresponding to the positioning protrusion.

7. The tooling for detecting the repeatability of a winding machine as described in claim 4, characterized in that, The rotating seat and the detection gauge are coaxial.

8. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, The current sensing device includes an amplifier and a sensor.

9. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, In the axial direction of the detection gauge, the thickness of the detection gauge is less than the range of movement of the winding needle during winding.

10. The tooling for detecting the repeatability of a winding machine as described in claim 1, characterized in that, The current sensing device is connected in series on the wire between the power supply and the detection gauge.

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