Stator shaping tool

Abstract

The utility model relates to the technical field of shaping tools, in particular to a stator shaping tool which comprises a workbench, a telescopic bottom die assembly used for installing a stator is arranged in the center of the top of the workbench, and a pressing assembly used for pressing the stator downwards is arranged over the telescopic bottom die assembly. The pressing assembly is fixedly connected with the base through a supporting frame, variable shaping assemblies are symmetrically arranged at the positions, located on the two sides of the telescopic bottom die assembly, of the top of the workbench, and each variable shaping assembly comprises two telescopic shaping pressing plates which are correspondingly arranged up and down and an adjusting assembly for driving the two telescopic shaping pressing plates to conduct shaping on the stator coil in the radial direction and the axial direction. The stator shaping device is simple in structure, convenient to operate, capable of shaping stators of different models, wide in application range and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of shaping tooling technology, and in particular to a stator shaping tooling. Background Technology

[0002] Stator windings refer to the windings installed on the stator, which are copper wires wound on the stator. A winding is a general term for a phase or the entire electromagnetic circuit composed of multiple coils or coil groups. The wires are wound on an iron core. An inductor is a device that works by utilizing the principle of electromagnetic induction. When current flows through a conductor, a certain electromagnetic field is generated around the conductor. The conductor itself will induce an effect on other conductors within the range of this electromagnetic field. The effect on the conductor that generates the electromagnetic field is called self-induction. That is, the changing current generated by the conductor itself produces a changing magnetic field, and this magnetic field further affects the current in the conductor.

[0003] After being processed by the mold, the prototype of the inductor coil will be deformed to a certain extent due to the toughness of the material and the internal stress, resulting in a loose and uneven coil arrangement and coil height. Such inductors have a small inductance, are prone to overheating, and have poor overall performance. Based on the above defects and shortcomings, stator shaping fixtures are needed.

[0004] For example, Chinese patent publication number CN214380547U discloses a stator shaping fixture, which includes a base, a lower pad, a bottom mold, an upper mold base, equal-height columns, a pressing component, and a shaping component. The lower pad is installed on the base, and the bottom mold for installing the stator is installed on the lower pad. The upper mold base is provided above the bottom mold and is fixed to the base by four equal-height columns. The pressing component is installed on the upper mold base, and the shaping components are provided on both sides of the bottom mold.

[0005] Although the above structure enables the shaping of the inner and outer coils of the stator and avoids over-shaping that could cause the inner coil to become concave, it can only shape one type of stator, resulting in a narrow range of applications and low practicality. Utility Model Content

[0006] The main technical problem to be solved by this utility model is to provide a stator shaping fixture that is simple in structure, easy to operate, capable of shaping various types of stators, and has a wide range of applications and strong practicality.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A stator shaping fixture includes a worktable. A telescopic bottom mold assembly for installing the stator is disposed at the top center of the worktable. A pressing assembly for pressing down the stator is disposed directly above the telescopic bottom mold assembly. The pressing assembly is fixedly connected to the base through a support frame. Variable shaping assemblies are symmetrically disposed on both sides of the telescopic bottom mold assembly on the top of the worktable. The variable shaping assembly includes two telescopic shaping pressure plates arranged vertically and vertically, and an adjustment assembly for driving the two telescopic shaping pressure plates to shape the stator coil radially and axially.

[0009] The following are further optimizations of the above technical solution by this utility model:

[0010] The pressing assembly includes a first telescopic cylinder fixedly installed on the top of the support frame. The telescopic end of the first telescopic cylinder is threadedly connected to a shaping mold, which mates with the outer ring of the stator.

[0011] Further optimization: The telescopic bottom mold assembly includes a six-jaw chuck embedded in the worktable. Each jaw of the six-jaw chuck has a T-shaped movable block fixedly connected to its top end. The outer ends of the T-shaped movable blocks are all fixedly connected to arc-shaped pressure plates.

[0012] Further optimization: A base is provided above the six-jaw chuck, and multiple T-shaped grooves are opened on the top of the base. The T-shaped grooves correspond one-to-one with the T-shaped movable blocks, and the T-shaped movable blocks are slidably set in the corresponding T-shaped grooves.

[0013] Further optimization: A first drive motor is installed on the six-jaw chuck, and the first drive motor drives the six-jaw chuck to rotate.

[0014] Further optimization: The adjustment component includes a fixed shell that is fixedly installed on the top of the workbench, and a movable groove is vertically opened on the side of the fixed shell near the telescopic shaping pressure plate.

[0015] Further optimization: Two fixed rods are slidably connected inside the movable groove. One end of the fixed rod is fixedly connected to the corresponding telescopic shaping pressure plate, and the other end of the fixed rod extends through the movable groove into the fixed shell and is fixedly connected to a drive block.

[0016] Further optimization: Two horizontal slide rails are symmetrically arranged on the inner walls of the upper and lower sides of the fixed shell. A slider is slidably arranged on each horizontal slide rail. A vertical slide rail is fixed between the two sliders. The driving block is slidably arranged on the vertical slide rail.

[0017] Further optimization: A ball screw is provided on one side of the vertical slide rail, and two screw nuts are symmetrically threaded on the ball screw. The two screw nuts have opposite directions of rotation, and the screw nuts are fixedly connected to the corresponding drive blocks.

[0018] Further optimization: One end of the ball screw is connected to a second drive motor, which is fixed on the corresponding slider; a second telescopic cylinder is fixedly connected to the inner wall of the bottom of the fixed housing, and the telescopic end of the second telescopic cylinder is fixedly connected to the corresponding slider.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] By adopting the above technical solution, this utility model has a simple structure, is easy to operate, can shape stators of various different models, has a wide range of applications, and is highly practical.

[0021] This invention enables multi-dimensional precise control of the radial and axial directions of the stator coil by driving a telescopic shaping plate through an adjustable component, thereby shaping it according to different motor design requirements. Furthermore, the flexible drive of the adjustable component allows for easy adaptation to stators of different specifications, reducing the cost and time of changing tooling due to changes in stator specifications. It is widely applicable to various motor production scenarios.

[0022] This invention applies stable pressure from above through a pressing component, provides bottom support through a telescopic bottom mold component, and makes fine adjustments to the radial and axial directions of the stator through a variable shaping component on both sides. This collaborative working method ensures that the stator is subjected to uniform and precise force in all directions, resulting in a more ideal shaping effect for the stator and improving the final forming quality of the stator. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a front view of an embodiment of the present utility model;

[0025] Figure 3 This is a structural schematic diagram of the telescopic bottom mold assembly in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the arc-shaped pressure plate in an embodiment of this utility model;

[0027] Figure 5 This is a side sectional view of the adjustment component in an embodiment of the present invention;

[0028] Figure 6 This is a top sectional view of the adjustment component in an embodiment of the present invention.

[0029] In the diagram: 1-Workbench; 2-Telescopic bottom mold assembly; 21-Six-jaw chuck; 22-T-shaped movable block; 23-Arc-shaped pressure plate; 24-First drive motor; 25-Base; 26-T-shaped slide groove; 3-Pressing assembly; 31-First telescopic cylinder; 32-Shaping mold; 4-Support frame; 41-Support column; 42-Support plate; 5-Telescopic shaping pressure plate; 6-Adjusting assembly; 61-Fixed shell; 62-Movable groove; 63-Fixed rod; 64-Drive block; 65-Horizontal slide rail; 66-Slider; 67-Vertical slide rail; 68-Ball screw; 69-Screw nut; 70-Second drive motor; 71-Second telescopic cylinder. Detailed Implementation

[0030] like Figure 1-6 As shown, a stator shaping fixture includes a workbench 1. A telescopic bottom mold assembly 2 for installing the stator is provided at the top center of the workbench 1. A pressing assembly 3 for pressing down the stator is provided directly above the telescopic bottom mold assembly 2. The pressing assembly 3 is fixedly connected to the base 25 through a support frame 4. Variable shaping assemblies are symmetrically arranged on both sides of the telescopic bottom mold assembly 2 on the top of the workbench 1. The variable shaping assembly includes two telescopic shaping pressure plates 5 arranged vertically and vertically, and an adjustment assembly 6 for driving the two telescopic shaping pressure plates 5 to shape the stator coil radially and axially.

[0031] With this design, firstly, the adjusting component 6 can drive the telescopic shaping plate 5 to perform multi-dimensional precise control of the stator coil's radial and axial directions, thereby enabling shaping according to different motor design requirements.

[0032] Secondly, the downward pressing component 3 applies stable pressure from above, the telescopic bottom mold component 2 provides bottom support, and the variable shaping component makes fine adjustments to the radial and axial directions of the stator on both sides. This collaborative working method can ensure that the stator is subjected to uniform and precise force in all directions, making the shaping effect of the stator more ideal and improving the final forming quality of the stator.

[0033] Furthermore, by adjusting component 6 for flexible drive, it can easily adapt to stators of different specifications, reducing the cost and time of changing tooling due to changes in stator specifications, and is widely applicable to various motor production scenarios.

[0034] The support frame 4 includes four support columns 41 fixedly installed on the top of the workbench 1, and the top of the four support columns 41 is fixedly connected to the same support plate 42.

[0035] This design, firstly, forms a stable frame with the four support columns 41 and the support plate 42, which can evenly distribute the pressure transmitted by the pressing component 3, avoid tooling deformation and shaking, ensure the accuracy and quality during the shaping of large or heavy stators, and also resist external interference such as workshop vibration and tooling reaction force, thus improving reliability in complex environments.

[0036] Secondly, the layout allows for ample space, facilitating stator installation, disassembly, tooling maintenance and debugging. It is also highly versatile, making it easy to combine with other tooling equipment and facilitating future expansion and upgrades.

[0037] Furthermore, it is easy to install and calibrate, ensuring the parallelism and perpendicularity of the support plate 42 and the worktable 1, providing a precise installation foundation for the pressing component 3, and facilitating disassembly and reassembly, reducing maintenance costs and difficulties. At the same time, the processing cost and difficulty are relatively low, and the strength and stability can be enhanced by setting connection holes, reinforcing ribs, etc.

[0038] The pressing assembly 3 includes a first telescopic cylinder 31 fixedly installed on the top of the support frame 4. The telescopic end of the first telescopic cylinder 31 is threadedly connected to a shaping mold 32, which cooperates with the outer ring of the stator.

[0039] This design has several advantages. First, the shaping mold 32 fits the outer ring of the stator, conforming to its contour and ensuring even distribution of pressing force. This prevents damage to the stator core, ensures tight coil winding, and improves the installation quality of the stator winding. Second, by changing the shaping mold 32, it can be adapted to various stator specifications, making it highly versatile and reducing equipment costs and mold replacement time.

[0040] Secondly, the telescopic end of the first telescopic cylinder 31 is threadedly connected to the shaping mold 32, which can precisely adjust the height of the shaping mold 32 according to the stator outer ring specifications and winding process, so as to achieve precise pressure control and ensure that the winding is tight and uniform; and the first telescopic cylinder 31 provides stable power, so that the pressure is constant during winding and avoids winding quality problems caused by pressure fluctuations.

[0041] Furthermore, the shaping mold 32 is threadedly connected to the telescopic end of the telescopic cylinder, making it easy to replace; the telescopic cylinder is fixed on the top of the support plate 42, which facilitates inspection, maintenance and repair, and also ensures working stability.

[0042] Finally, the telescopic cylinder is fixed on the support plate 42 to provide stable support and prevent the pressing component 3 from tilting or shifting; and the pressing component 3 is reasonably laid out, saves space, and is easy to cooperate with other production equipment, thereby improving production coordination.

[0043] The telescopic bottom mold assembly 2 includes a six-jaw chuck 21 embedded in the workbench 1. Each jaw of the six-jaw chuck 21 has a T-shaped movable block 22 fixedly connected to its top end. The outer ends of the T-shaped movable blocks 22 are all fixedly connected to arc-shaped pressure plates 23.

[0044] A base 25 is provided above the six-jaw chuck 21. Multiple T-shaped grooves 26 are provided on the top of the base 25. Each T-shaped groove 26 corresponds to a T-shaped movable block 22. The T-shaped movable block 22 is slidably disposed in the corresponding T-shaped groove 26.

[0045] The bottom of the base 25 is fixedly connected to the workbench 1.

[0046] The six-jaw chuck 21 is equipped with a first drive motor 24, which drives the six-jaw chuck 21 to rotate.

[0047] The six-jaw chuck 21 is existing technology, and its installation method and working principle are known to those skilled in the art. Therefore, it will not be described in detail in this embodiment.

[0048] In use, when the telescopic bottom mold assembly 2 needs to be telescopically adjusted, since the first drive motor 24 is installed on the six-jaw chuck 21, after the first drive motor 24 is started, the first drive motor 24 outputs power to drive the six-jaw chuck 21 to rotate. Each jaw of the six-jaw chuck 21 will move radially synchronously with the rotation of the chuck. When the jaw moves radially outward, it drives the T-shaped movable block 22 fixedly connected to it to slide outward, thereby causing the arc-shaped pressure plate 23 to extend outward. Conversely, when the jaw moves radially inward, the T-shaped movable block 22 will slide inward, and the arc-shaped pressure plate 23 will correspondingly retract inward. In this way, the arc-shaped pressure plate 23 can be telescopically adjusted according to the requirements to adapt to different sizes, shapes and other requirements for processing or placement of stators for fixing, positioning and other operations.

[0049] The adjustment component 6 includes a fixed shell 61 fixedly installed on the top of the workbench 1, and a movable groove 62 is vertically opened on the side of the fixed shell 61 near the telescopic shaping pressure plate 5.

[0050] Two fixed rods 63 are slidably connected in the movable groove 62. One end of the fixed rod 63 is fixedly connected to the corresponding telescopic shaping pressure plate 5, and the other end of the fixed rod 63 extends through the movable groove 62 into the fixed shell 61 and is fixedly connected to the drive block 64.

[0051] Two horizontal slide rails 65 are symmetrically arranged on the inner walls of the upper and lower sides of the fixed shell 61. A slider 66 is slidably arranged on each of the horizontal slide rails 65. A vertical slide rail 67 is fixedly arranged between the two sliders 66. The driving block 64 is slidably arranged on the vertical slide rail 67.

[0052] A ball screw 68 is provided on one side of the vertical slide rail 67. Two screw nuts 69 are symmetrically threaded on the ball screw 68. The two screw nuts 69 have opposite directions of rotation and are fixedly connected to the corresponding drive blocks 64.

[0053] One end of the ball screw 68 is connected to a second drive motor 70, which is fixed on the corresponding slider 66.

[0054] A second telescopic cylinder 71 is fixedly connected to the inner wall of the bottom of the fixed shell 61, and the telescopic end of the second telescopic cylinder 71 is fixedly connected to the corresponding slider 66.

[0055] During use, this tooling requires an external control system (which is existing technology and will not be described in detail in this embodiment) to receive preset shaping parameters and control the actions of components such as the first drive motor 24, the first telescopic cylinder 31, the second drive motor 70, and the second telescopic cylinder 71, so as to realize the automated control of the stator shaping process.

[0056] First, based on the stator coil size, shaping part and preset process requirements, the horizontal target position coordinates of the telescopic shaping pressure plate 5 are set through an external control system (which is existing technology and therefore will not be described in detail in this embodiment). Then, the control system sends instructions containing telescopic direction and stroke information to the second telescopic cylinder 71 accordingly.

[0057] The second telescopic cylinder 71 extends to push the slider 66 to slide along the horizontal slide rail 65, which drives the drive block 64, the fixed rod 63 and the telescopic shaping plate 5 to move horizontally closer to the target position; when it retracts, the opposite is true, to achieve horizontal position adjustment. During the process, the position of the slider 66 is monitored by the position detection sensor and fed back to the control system for calibration until the telescopic shaping plate 5 reaches the required horizontal position.

[0058] Next, the target vertical position of the telescopic shaping plate 5 is set. The control system sends a command to the second drive motor 70 containing parameters such as rotation direction, number of rotations or angle. The second drive motor 70 drives the ball screw 68 to rotate, causing the screw nut 69 with the opposite rotation direction to drive the drive block 64 to move along the vertical slide rail 67, thereby adjusting the vertical position of the telescopic shaping plate 5. The position is monitored by the position detection device and adjusted by the control system until the required vertical position is reached.

[0059] Next, the stator coil shaping operation is carried out. After the telescopic shaping plate 5 is moved to the predetermined position, the relevant power device is started to squeeze and shape the stator coil according to the preset mode. Then the shaping effect is checked. If the expected standard is not met, the position adjustment and shaping steps are repeated according to the deviation until it is qualified.

[0060] This design allows the telescopic shaping plate 5 to be independently and flexibly adjusted in both horizontal and vertical directions to meet the shaping needs of stator coils of different specifications and locations, thereby enhancing the adaptability and versatility of the equipment and improving its efficiency and production flexibility.

[0061] In use, the stator to be shaped is placed on the telescopic bottom mold assembly 2 at the top center of the workbench 1, so that its center roughly coincides with the center of the telescopic bottom mold assembly 2. Then, the external control system activates the six-jaw chuck 21, causing its jaws to retract inward. The movement of the jaws drives the T-shaped movable block 22 fixedly connected to its top end to move synchronously, which in turn causes the arc-shaped pressure plate 23 fixed to the outer end of the T-shaped movable block 22 to move as well. The arc-shaped pressure plate 23 gradually approaches and fits the stator from the outer periphery of the stator bottom, and finally forms a stable clamping and support effect on the stator bottom in the radial direction, ensuring that the stator will not shake or shift at the bottom during the subsequent shaping process.

[0062] Subsequently, the external control system activates the first telescopic cylinder 31, causing its telescopic end to extend downwards. Since the telescopic end of the first telescopic cylinder 31 is threadedly connected to the shaping mold 32, the shaping mold 32 will move downwards synchronously with the telescopic end. The shaping mold 32 continues to move downwards until it comes into close contact with the top surface of the outer ring of the stator. By applying a certain pressure through the first telescopic cylinder 31, the stator is effectively fixed in the axial direction, preventing the stator from moving up and down in the axial direction during the subsequent shaping operation, and ensuring the relative stability of the overall position of the stator.

[0063] At the same time, the external control system starts the adjustment component 6 in the variable shaping assembly symmetrically arranged on both sides of the top of the worktable 1. The adjustment component 6 will start working according to the pre-set shaping parameters (these parameters are determined based on the standard size, shape requirements and established process specifications of the stator, covering key indicators such as the specific shaping amount in the radial and axial directions).

[0064] The second telescopic cylinder 71 extends to push the slider 66 to slide along the horizontal slide rail 65, which drives the drive block 64, the fixed rod 63 and the telescopic shaping plate 5 to move horizontally closer to the target position; when it retracts, the opposite is true, to achieve horizontal position adjustment. During the process, the position of the slider 66 is monitored by the position detection sensor and fed back to the control system for calibration until the telescopic shaping plate 5 reaches the required horizontal position.

[0065] Next, the target vertical position of the telescopic shaping plate 5 is set. The control system sends a command to the second drive motor 70 containing parameters such as rotation direction, number of rotations or angle. The second drive motor 70 drives the ball screw 68 to rotate, causing the screw nut 69 with the opposite rotation direction to drive the drive block 64 to move along the vertical slide rail 67, thereby adjusting the vertical position of the telescopic shaping plate 5. The position is monitored by the position detection device and adjusted by the control system until the required vertical position is reached.

[0066] Next, the stator coil shaping operation is carried out. After the telescopic shaping plate 5 is moved to the predetermined position, the relevant power device is started to squeeze and shape the stator coil according to the preset mode. Then the shaping effect is checked. If the expected standard is not met, the position adjustment and shaping steps are repeated according to the deviation until it is qualified.

[0067] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A stator shaping fixture, comprising a worktable (1), characterized in that: A telescopic bottom mold assembly (2) for installing the stator is provided at the top center of the workbench (1). A pressing assembly (3) for pressing down the stator is provided directly above the telescopic bottom mold assembly (2). The pressing assembly (3) is fixedly connected to the base (25) through the support frame (4). Variable shaping assemblies are symmetrically arranged on both sides of the telescopic bottom mold assembly (2) at the top of the workbench (1). The variable shaping assembly includes two telescopic shaping pressure plates (5) arranged vertically and vertically, and an adjustment assembly (6) for driving the two telescopic shaping pressure plates (5) to shape the stator coil radially and axially. The adjustment assembly (6) includes a fixed shell (61) fixedly installed on the top of the workbench (1). A movable groove (62) is vertically opened on the side of the fixed shell (61) near the telescopic shaping pressure plate (5). Two fixed rods (63) are slidably connected in the movable groove (62). One end of the fixed rod (63) is fixedly connected to the corresponding telescopic shaping pressure plate (5), and the other end of the fixed rod (63) passes through the movable groove (63). 62) A drive block (64) extends into the fixed housing (61) and is fixedly connected to it; two horizontal slide rails (65) are symmetrically arranged on the inner walls of the upper and lower sides of the fixed housing (61), and sliders (66) are slidably arranged on each of the horizontal slide rails (65). A vertical slide rail (67) is fixedly arranged between the two sliders (66), and the drive block (64) is slidably arranged on the vertical slide rail (67); a ball screw (68) is arranged on one side of the vertical slide rail (67), and the ball screw (68) has symmetrical threads. There are two lead screw nuts (69) connected, with opposite rotation directions. The lead screw nuts (69) are fixedly connected to the corresponding drive blocks (64) respectively. One end of the ball screw (68) is connected to a second drive motor (70), which is fixed on the corresponding slider (66). A second telescopic cylinder (71) is fixedly connected to the inner wall of the bottom of the fixed shell (61), and the telescopic end of the second telescopic cylinder (71) is fixedly connected to the corresponding slider (66).

2. The stator shaping fixture according to claim 1, characterized in that: The pressing assembly (3) includes a first telescopic cylinder (31) fixedly installed on the top of the support frame (4). The telescopic end of the first telescopic cylinder (31) is threadedly connected to a shaping mold (32), which is engaged with the outer ring of the stator.

3. The stator shaping fixture according to claim 2, characterized in that: The telescopic bottom mold assembly (2) includes a six-jaw chuck (21) embedded in the worktable (1). Each jaw of the six-jaw chuck (21) is fixedly connected to a T-shaped movable block (22) at the top end. The outer ends of the T-shaped movable blocks (22) are all fixedly connected to arc-shaped pressure plates (23).

4. The stator shaping fixture according to claim 3, characterized in that: A base (25) is provided above the six-jaw chuck (21). Multiple T-shaped grooves (26) are provided on the top of the base (25). The T-shaped grooves (26) correspond one-to-one with the T-shaped movable blocks (22). The T-shaped movable blocks (22) are slidably set in the corresponding T-shaped grooves (26).

5. A stator shaping fixture according to claim 4, characterized in that: A first drive motor (24) is installed on the six-jaw chuck (21), and the first drive motor (24) drives the six-jaw chuck (21) to rotate.

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