Adjustable winding tool for coreless motor coil

Abstract

The invention relates to the field of micro motor manufacturing, research and development, in particular to a coreless motor coil winding tool which is high in coil winding universality. A traditional coil winding tool is limited by changes of sizes and shapes and has high customization, enterprises need to produce unique coil winding tools meeting the requirements according to different shapes and different sizes, and continuous adverse effects can be brought to the tool production efficiency and the enterprise production cost. According to the core of the technical scheme, adjustable coil winding positioning points and positioning shafts are produced, a winding tool comprises three rotatable rotating shafts, and enameled wire winding positioning screws capable of being adjusted smoothly are installed in grooves formed in the rotating shafts. The universality of the coil winding tool is improved through the method that the tool is adjustable, common rhombic and hexagonal coils and coils of different sizes can be produced at the same time, and therefore the one-to-many coil wire petal winding tool with the high universality is obtained.

Description

Technical Field

[0001] The present invention relates to the field of research, development and manufacturing of micro motors, and in particular to the research and development of coreless motor coil winding tooling. Background Art

[0002] (1) Compared with ordinary motors, coreless motors use coreless rotors, which reduces the mechanical energy loss of the rotor itself during the operation of the motor; secondly, the stator of the coreless motor is annular, which is more compact than the solid stator of ordinary motors. Compared with ordinary motors of the same power, the coreless motor is lighter in size. At the same time, under the same unit volume, the coreless motor will have a higher power output rate. Coreless motors will be more widely used in future motor development due to their advantages such as smoother high and low speed operation, more precise control, higher efficiency, and power density.

[0003] (2) Domestic stator coil winding requires the production and processing of fixed-model tooling according to fixed dimensions for the needs of coil petals of different shapes and sizes, so as to meet the specific needs of coil petals required by different motors. As a result, the production process is more complicated, less flexible, and less efficient. At the same time, it also increases the production cost of the company's tooling to a certain extent.

[0004] (3) The Chinese invention patent "A coil winding device and adjustment device for hollow cup motor production" with the application publication number CN 112104176 A provides a winding fixture that can be adjusted quickly and accurately, but its tooling components are too complicated, which increases the production cost of the tooling while improving accuracy and flexibility. This patent not only solves the problem of tooling flexibility and versatility, but also reduces the cost of tooling customization. Summary of the invention

[0005] (1) The purpose of this patent is to solve the problems of low flexibility, low efficiency and high cost caused by the use of tooling of specific sizes in coil winding due to the difference in required sizes.

[0006] (2) In order to solve the above-mentioned problems, the technical solution adopted by this patent is to produce a new type of low-cost and high-efficiency tooling. As for the existing tooling, in order to achieve low cost and high efficiency, it is necessary to solve the problem of the uniqueness of tooling required for different sizes. Therefore, the coil winding tooling developed by this patent solves the "one-to-one" problem and develops and produces a "one-to-many" coil adjustable winding tooling.

[0007] (3) The main body of the tooling is composed of three specific and similar parts. Each individual mold is composed of symmetrical rectangular rods on both sides of the through hole concentric circle as the center. The through hole concentric circle is designed so that the three parts can fit perfectly, and the angle can be freely adjusted because the concentric circle is a movable opening. In each individual mold, the rectangular block is used as the axis, and a longitudinal groove is made on the rectangular block. The rectangular groove is used to smoothly adjust the screw to meet the required size of the line petal.

[0008] (4) When the three molds are deployed at the same time, the tooling can meet the production requirements of hexagonal wire petals. However, since the commonly used wire petal shapes are quadrilateral or hexagonal, the tooling can overlap two of the molds to retain four screws, which can meet the production requirements of quadrilateral wire petals and improve the flexibility and efficiency of coil winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] (1) Figure 1 Schematic diagram of the tooling assembly structure (2) Figure 2 The schematic diagram of the tooling structure breakdown is (3) Figure 3 Schematic diagram of adjustment (taking hexagonal line petals as an example) (4) Figure 4 Schematic diagram of line petal (5) Figure 5 Points that need to be fixed during the production of the spool (6) Figure 6 Schematic diagram of line petal size adjustment DETAILED DESCRIPTION

[0010] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0011] This tooling is composed of two pieces of specific tooling with the same design. Figure 1 , 2 As shown, each tooling body consists of three positioning shafts and six positioning screws. Figure 3 This is a schematic diagram of tooling adjustment. The screws at the tooling slot can be adjusted according to the required size of different wire petals. Each winding die has a through-body slot for placing screws to adjust the distance from the center of the winding die. The adjustment method is as follows: Figure 3 As shown in the serial number 3 in the figure. After adjustment and fixation, the screws at the hexagonal positions are aligned in pairs, and the center of the tooling is the concentric circle of the movable through hole. The two pieces of tooling that have been adjusted and aligned are fixed to the winding machine by screws for coil winding.

[0012] When winding coils of different inner diameters and sizes, only the following Figure 3 Adjust the three-part mold angle 1, 2 and the distance 3 from the screw to the axis. Figure 4Taking the hexagonal line petal as an example, H2 and L can be changed by adjusting the mold angles 1 and 2, and H1 can be changed by adjusting the distance from the screw to the axis through the smooth screw. The tooling can meet complex needs through simple adjustments.

[0013] Because the commonly used line petals are Figure 4 The quadrilateral or hexagon in the figure has different numbers of positioning points required for winding different shapes of petals. Figure 5 As shown, the positions of 1, 2, 3, and 4 in the figure need to be determined during the production process for the quadrilateral wire petals, and the positions of 1, 2, 3, 4, 5, and 6 in the figure need to be determined during the production process for the hexagonal wire petals. When used to wind coils of different shapes, it is only necessary to rotate the mold so that the two parts overlap so that only two parts of the main body and four screws are retained, and the quadrilateral coil can be wound. If the rotation and overlap are not performed, the hexagonal wire petals can be wound.

[0014] When the tooling is used to wind coils of different inner diameters, different sizes, and different shapes, it is only necessary to make simple adjustments to the tooling, and there is no need to produce tooling corresponding to different needs, which greatly improves the flexibility and versatility of the tooling; only one winding tooling is used to produce hollow cup coils of all commonly used sizes and models, which greatly reduces the tooling production cost.

Claims

1. An adjustable winding tool for hollow cup motor coil, used for winding hollow cup coil petals, characterized by: The tooling includes three rotatable positioning shafts, each of which is symmetrical with the concentric circle of the through hole as the center and has through-body slots on both sides. Each side of the positioning shaft is provided with a smooth screw at the slot. The concentric circle of the through hole in the center of the tooling is convenient for fixing to the winding machine. Each positioning shaft and positioning screw point is adjustable to improve the versatility and flexibility of the tooling. When in use, the tooling is fixed on the winding machine in pairs for winding.

2. According to claim 1, the adjustable winding tool for hollow cup motor coil is characterized in that: The tooling is movable around the concentric circle of the through hole and three positioning axes can rotate around the concentric circle of the through hole, and two of the three positioning axes can rotate and overlap to facilitate winding of coil petals of different shapes.

3. The adjustable winding tool for coreless motor coil according to claim 1, characterized in that: The through-body slot on the tooling positioning shaft is for the purpose of smoothly adjusting the distance between the positioning screw for winding the enameled wire and the center of the tooling.

4. The adjustable winding tool for coreless motor coil according to claim 1, characterized in that: In order to achieve the purpose of rotatable overlap, the concentric circle parts of the three positioning shaft centers are designed to be divided into three parts: upper, middle and lower.

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