A brushless motor shaft pressing machine

Abstract

The present invention discloses a brushless motor shaft pressing machine, which relates to the technical field of brushless motors. The pressing machine comprises a pressing machine, wherein a lift is provided on one side of the pressing machine, a pressing plate is provided at the bottom of the lift, a bottom plate is fixedly connected to the bottom of the pressing machine, a fixed disk is fixedly connected to the top of the bottom plate, and a clamping mechanism and a brushless motor coil are provided above the bottom plate. By providing the clamping mechanism, it is avoided that an oversized brushless motor coil is clamped due to operational errors of the staff, and the motor shaft is avoided from being pressed into a brushless motor coil with a larger size by using the lift incorrectly, resulting in a situation where the motor shaft and the inner wall of the brushless motor coil are not tightly fitted and are easy to loosen. Therefore, brushless motor coils with the same specifications but with larger sizes and hollow inner walls due to uneven production quality are screened, so as to prevent the motor shaft from being pressed into a brushless motor coil with a larger size and causing loosening.

Description

Technical Field

[0001] The invention relates to the technical field of brushless motors, in particular to a brushless motor shaft pressing machine. Background Art

[0002] A brushless DC motor is a typical mechatronic product consisting of a motor and a driver. Because it operates in an autonomous manner, it does not require a separate starting winding on the rotor, as is the case with synchronous motors that start under variable frequency speed regulation and heavy loads. It also does not produce oscillations or step-outs when the load changes suddenly.

[0003] A motor shaft pressing machine described in patent application publication number CN116111788B includes a machine base, wherein the upper end surface of the machine base is provided with a first limiting rotation groove and a second limiting rotation groove in sequence from left to right, wherein a rotor core loading mechanism and a motor shaft loading mechanism are respectively provided in the first limiting rotation groove and the second limiting rotation groove, and the rotor core loading mechanism and the motor shaft loading mechanism are connected by a chain and move synchronously;

[0004] When the motor shaft of a brushless motor is pressed into the brushless motor coil, the coil needs to be fixed first. However, the conventional fixing and clamping method is relatively complicated and cumbersome, which may lead to the problem of pressing-in tilt and deformation due to improper manual adjustment, which may occur due to the clamping coil and the pressed-in motor shaft not being centered. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a brushless motor shaft pressing machine, which achieves the purpose of solving the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A brushless motor shaft pressing machine, comprising a pressing machine, a lifter is provided on one side of the pressing machine, a pressing plate is provided at the bottom of the lifter, a bottom plate is fixedly connected to the bottom of the pressing machine, a fixed disk is fixedly connected to the top of the bottom plate, and a clamping mechanism and a brushless motor coil are provided above the bottom plate;

[0007] The clamping mechanism comprises:

[0008] The roller is a circular disc-shaped structure. The bottom of the roller is fixedly connected to the top of the base plate. The outer wall of the roller is provided with a groove. The groove is a circular annular groove. The inner wall of the groove is slidably connected with an arc-shaped clamping block. The arc-shaped clamping block is an arc-shaped plate-shaped structure. The roller is a circular cylindrical structure. The roller is used to clamp the brushless motor coil.

[0009] The connecting plate is an arc-shaped plate structure, the outer wall of the connecting plate is fixedly connected to the outer wall of the arc-shaped block, the outer wall of the connecting plate is fixedly connected to the arc plate, the outer wall of the arc plate is fixedly connected to a hinge bar, one end of the hinge bar is hinged to the hinge block through a rotating shaft, one side of the hinge bar is hinged to a torsion spring, and one end of the torsion spring is fixedly connected to one side of the hinge block.

[0010] Preferably, the outer wall of the hinge block is fixedly connected to the outer wall of the fixed plate, the roller is rotatably connected with a rotating block on both sides, one side of the rotating block is fixedly connected to the telescopic rod A, and the other end of the telescopic rod A is fixedly connected to another rotating block.

[0011] Preferably, a supporting mechanism is provided at the bottom of the arc plate, and the supporting mechanism includes a slide bar, and the slide bar is an arc-shaped strip structure, and the top of the slide bar is fixedly connected to the bottom of the arc plate.

[0012] Preferably, the outer wall of the slide bar is slidably connected to a slide plate, the bottom of the slide plate is fixedly connected to one end of the telescopic rod B, the bottom of the slide plate is fixedly connected to the telescopic rod B, and the bottom of the telescopic rod B is fixedly connected to a fixed block.

[0013] Preferably, a backing plate is fixedly connected to one side of the fixing block, the bottom of the backing plate is slidably connected to a limit bar, and the bottom of the limit bar is fixedly connected to the top of the fixing plate.

[0014] Preferably, the outer wall of the hinge bar is provided with a detection mechanism, and the detection mechanism includes a block, the outer wall of the block is fixedly connected to the outer wall of the hinge bar, the outer wall of the block is fixedly connected to a telescopic rod C, one end of the telescopic rod C is fixedly connected to a fixed plate, the outer wall of the fixed plate is fixedly connected to a spring, and one end of the spring is fixedly connected to one side of the block.

[0015] Preferably, the outer wall of the hinge bar is fixedly connected to a limit slide bar, the outer wall of the limit slide bar is slidably connected to a sliding sleeve, the outer wall of the sliding sleeve is fixedly connected to a counterweight block, and the counterweight block serves as a counterweight.

[0016] Preferably, the counterweight block is a square block structure, and the outer wall of the hinge bar is provided with a scale groove, and the scale groove is an elongated strip groove.

[0017] The present invention provides a brushless motor shaft pressing machine, which has the following beneficial effects:

[0018] 1. The present invention provides a clamping mechanism and fits the brushless motor coil through several rollers. While automatically clamping the brushless motor coil, it also avoids the problem of staff operating errors such as clamping an oversized brushless motor coil and incorrectly using a lift to press the motor shaft into a larger brushless motor coil, which causes the motor shaft and the inner wall of the brushless motor coil to be loose and easy to fit. Therefore, brushless motor coils of the same specification but with larger sizes and hollow inner walls due to uneven production quality are screened to prevent the motor shaft from being pressed into a larger brushless motor coil and causing looseness.

[0019] 2. The present invention provides a clamping mechanism. When the brushless motor coil descends, it will rotate as the roller is pushed, thereby realizing static friction between the outer wall of the roller and the outer wall of the brushless motor coil, reducing sliding friction and the problem of wear between the outer wall of the brushless motor coil and the roller during the descent process due to tight clamping. Therefore, the brushless motor coil will not be damaged or deformed during the process of pressing down, clamping and removing.

[0020] 3. The present invention sets a clamping mechanism, so that when one roller is pushed and lifted by the descending brushless motor coil, all the rollers will be lifted together, thereby stably clamping the brushless motor coil in the middle position, completing the centering clamping and fixing of the brushless motor coil, so that the subsequent pressing plate descends and the motor shaft inserted in the middle of the brushless motor coil is stably pressed into the brushless motor coil in the center, avoiding problems such as skewness and deformation caused by skewed and non-centered pressing.

[0021] 4. The present invention provides a support mechanism to raise the brushless motor coil so that the parts extending from the middle of the brushless motor coil will not directly contact the roller below to cause deformation. While supporting the outer ring part of the bottom of the brushless motor coil, when the size of the brushless motor coil is slightly different, the distance of pushing the roller to open and close is also different. The position of the pad is determined by the distance that the arc plate at the bottom moves synchronously with the telescopic rod B and the fixed block through the movement of the roller. Therefore, the pad below will correspondingly catch the bottom of the brushless motor coil according to the distance the outer wall of the brushless motor coil pushes the roller away. Even if the size of the brushless motor coil deviates, it can be ensured that the pad can stably raise the brushless motor coil.

[0022] 5. The present invention sets a detection mechanism. When the brushless motor coil has different size deviations, it pushes the roller to the arc plate and the hinge bar to lift it to different degrees. Different lifting angles will cause the hinge bar to have different inclination angles. When the sliding sleeve on the hinge bar is at different inclination angles under the counterweight of the counterweight block, it is supported by different forces from the inclined surface of the hinge bar, so that it will slide on the hinge bar at different distances and pull the spring to undergo different degrees of tensile deformation. Therefore, the diameter difference of the brushless motor coil can be quickly judged by sliding the sliding sleeve on the hinge bar to different scale grooves, so that the staff can understand the specific size data of the brushless motor coil at this time, so that the staff can take corresponding follow-up measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the bottom plate of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the clamping mechanism of the present invention Figure 1 ;

[0026] Figure 4 Schematic diagram of the structure of the clamping mechanism of the present invention Figure 2 ;

[0027] Figure 5 For the present invention Figure 3 Enlarged view of point C;

[0028] Figure 6 The structure diagram of the clamping mechanism of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 7 The motion diagram of the clamping mechanism of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 8 The motion diagram of the clamping mechanism of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 9 The motion diagram of the clamping mechanism of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 10 For the present invention Figure 6 Enlarged view of point B;

[0033] Figure 11 The structural diagram of the support mechanism of the present invention is as follows Figure 1 ;

[0034] Figure 12 The structural diagram of the support mechanism of the present invention is as follows Figure 2 ;

[0035] Figure 13 For the present invention Figure 6 A magnified view of point A;

[0036] Figure 14 Schematic diagram of the disassembled structure of the detection mechanism of the present invention Figure 1 ;

[0037] Figure 15 Schematic diagram of the structure of the detection mechanism of the present invention Figure 2 ;

[0038] Figure 16 The motion diagram of the detection mechanism of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 17 The motion diagram of the detection mechanism of the present invention is shown in FIG. Figure 2 .

[0040] In the figure: 1 press machine, 2 elevator, 3 clamping mechanism, 301 roller, 302 groove, 303 arc block, 304 connecting plate, 305 arc plate, 306 hinge bar, 307 rotating shaft, 308 hinge block, 309 torsion spring, 311 rotating block, 312 telescopic rod A, 4 supporting mechanism, 401 slide bar, 402 slide plate, 403 telescopic rod B, 404 fixed block, 405 pad, 406 limit bar, 5 detection mechanism, 501 block, 502 telescopic rod C, 503 spring, 504 fixed plate, 505 sliding sleeve, 506 counterweight block, 507 scale groove, 508 limit slide bar, 6 bottom plate, 7 brushless motor coil, 8 fixed disk, 9 pressure plate. DETAILED DESCRIPTION

[0041] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a brushless motor shaft pressing machine, comprising a pressing machine 1, a lift 2 is provided on one side of the pressing machine 1, a pressing plate 9 is provided at the bottom of the lift 2, a bottom plate 6 is fixedly connected to the bottom of the pressing machine 1, a fixing plate 8 is fixedly connected to the top of the bottom plate 6, and a clamping mechanism 3 and a brushless motor coil 7 are provided above the bottom plate 6;

[0042] The clamping mechanism 3 includes:

[0043] The roller 301 is a circular disc-shaped structure. The bottom of the roller 301 is fixedly connected to the top of the base plate 6. The outer wall of the roller 301 is provided with a groove 302. The groove 302 is a circular annular groove. The inner wall of the groove 302 is slidably connected with an arc-shaped clamping block 303. The arc-shaped clamping block 303 is an arc-shaped plate-shaped structure. The roller 301 is a circular cylindrical structure. The roller 301 is used to clamp the brushless motor coil 7.

[0044] Connecting plate 304, connecting plate 304 is an arc-shaped plate structure, the outer wall of connecting plate 304 is fixedly connected to the outer wall of arc-shaped clamping block 303, the outer wall of connecting plate 304 is fixedly connected to arc plate 305, the outer wall of arc plate 305 is fixedly connected to hinge bar 306, one end of hinge bar 306 is hinged to hinge block 308 through rotating shaft 307, one side of hinge bar 306 is hinged to torsion spring 309, one end of torsion spring 309 is fixedly connected to one side of hinge block 308;

[0045] When in use, the brushless motor coil 7 is placed on the bottom plate 6 and clamped by the clamping mechanism 3. Then, the motor shaft to be pressed into the brushless motor coil 7 is inserted into the inner wall of the brushless motor coil 7. Then, the lifting machine 2 is controlled to descend by starting the pressing machine 1, and the motor shaft is pressed into the inner wall of the brushless motor coil 7 by the pressing plate 9, thereby completing the work of pressing the motor shaft into the interior of the brushless motor coil 7.

[0046] Example 2: Please refer to Figure 1-9 Based on the first embodiment, the present invention provides a technical solution: the outer wall of the hinge block 308 is fixedly connected to the outer wall of the fixed plate 8, and the roller 301 is rotatably connected with a rotating block 311 on both sides. One side of the rotating block 311 is fixedly connected to a telescopic rod A312, and the other end of the telescopic rod A312 is fixedly connected to another rotating block 311.

[0047] A support mechanism 4 is provided at the bottom of the arc plate 305. The support mechanism 4 includes a slide bar 401. The slide bar 401 is an arc-shaped strip structure. The top of the slide bar 401 is fixedly connected to the bottom of the arc plate 305.

[0048] When the brushless motor coil 7 is placed on the fixed plate 8 on the bottom plate 6, the brushless motor coil 7 is pressed between each groove 302. When the brushless motor coil 7 is pressed vertically downward, the roller 301 and the hinge bar 306 are pushed to rotate outward and lift under the hinge of the rotating shaft 307 and the hinge block 308. When the hinge bar 306 rotates and lifts, the torsion spring 309 is twisted to deform the torsion spring 309. After the roller 301 is lifted, as the brushless motor coil 7 continues to descend, the outer wall of the brushless motor coil 7 is pressed against the outer wall of the roller 301. The hinge bar 306 and the roller 301 are subjected to the rebound force of the torsion spring 309, so that the roller 301 is tightly fitted with the outer wall of the bottom plate 6, completing the fitting of the brushless motor coil 7 by several rollers 301, and automatically clamping the brushless motor coil 7.

[0049] When the size of the brushless motor coil 7 is smaller than the standard preset value, the motor shaft can still be pressed into the brushless motor coil 7, and the impact is small. However, when the size of the brushless motor coil 7 is larger than the standard preset value, the motor shaft will be pressed into it, which will cause looseness. When the diameter of the brushless motor coil 7 is too large, larger than the original size of the workpiece to be processed, the bottom of the brushless motor coil 7 will be against the top of the roller 301. When pressed, the roller 301 and the hinge bar 306 will be pressed and rotated downward. Therefore, only when the size of the brushless motor coil 7 is equal to or smaller than the preset size can the side of the roller 301 be pushed to open the roller 301, and then the roller 301 is used to push the brushless motor with the elastic force of the torsion spring 309. The coil 7 completes the clamping work, and when the diameter of the brushless motor coil 7 is larger than the preset value, the roller 301 cannot be opened, but is pushed to the middle and squeezed together, making it impossible to clamp the brushless motor coil 7, thereby avoiding the situation where the brushless motor coil 7 is clamped due to operational errors of the staff, and the motor shaft is incorrectly pressed into the brushless motor coil 7 with a larger size using the elevator 2, resulting in the motor shaft and the inner wall of the brushless motor coil 7 not fitting tightly and being easy to loosen. Therefore, the brushless motor coils 7 with the same specifications but larger sizes and hollow inner walls due to uneven production quality are screened to prevent the motor shaft from being pressed into the brushless motor coil 7 with a larger size and causing looseness.

[0050] When the brushless motor coil 7 pushes the roller 301 to open, the roller 301 is engaged with the arc-shaped block 303 and the connecting plate 304 through the groove 302, so that the roller 301 can slide and rotate on the arc plate 305, but will not separate from the arc plate 305, so that the roller 301 is connected to the hinge bar 306 through the arc-shaped block 303, the connecting plate 304, the arc plate 305, and the hinge bar 306. When the brushless motor coil 7 descends, the self-rotation of the roller 301 when being pushed realizes static friction between the outer wall of the roller 301 and the outer wall of the brushless motor coil 7, thereby reducing the sliding friction and the wear problem caused by the tight clamping between the outer wall of the brushless motor coil 7 and the roller 301 during the descent process. Therefore, the brushless motor coil 7 will not be damaged or deformed during the pressing, clamping and removal processes.

[0051] When one roller 301 is pushed and lifted, the rotating blocks 311 connected on both sides will drive the telescopic rod A312 and the other rotating block 311 to move together, and the telescopic rod A312 will extend, so that when one roller 301 moves, it will move together with the rollers 301 on both sides, and each roller 301 is connected together through the rotating block 311 and the telescopic rod A312, so that when one roller 301 is pushed and lifted by the lowering of the brushless motor coil 7, all the rollers 301 will be lifted together, thereby stably clamping the brushless motor coil 7 in the middle position, completing the centering clamping and fixing of the brushless motor coil 7, so that the subsequent pressing plate 9 descends and the motor shaft inserted in the middle of the brushless motor coil 7 is stably pressed into the brushless motor coil 7 in the center, avoiding problems such as skewness and deformation caused by skewed and non-centering pressing;

[0052] Example 3: Please refer to Figure 1-17 Based on the first and second embodiments, the present invention provides a technical solution: the outer wall of the slide bar 401 is slidably connected to a slide plate 402, the bottom of the slide plate 402 is fixedly connected to one end of the telescopic rod B403, the bottom of the slide plate 402 is fixedly connected to the telescopic rod B403, and the bottom of the telescopic rod B403 is fixedly connected to a fixed block 404.

[0053] A backing plate 405 is fixedly connected to one side of the fixed block 404 , and a limit bar 406 is slidably connected to the bottom of the backing plate 405 , and the bottom of the limit bar 406 is fixedly connected to the top of the fixed plate 8 .

[0054] A detection mechanism 5 is provided on the outer wall of the hinged bar 306, and the detection mechanism 5 includes a block 501. The outer wall of the block 501 is fixedly connected to the outer wall of the hinged bar 306. The outer wall of the block 501 is fixedly connected to a telescopic rod C502. One end of the telescopic rod C502 is fixedly connected to a fixed plate 504. The outer wall of the fixed plate 504 is fixedly connected to a spring 503. One end of the spring 503 is fixedly connected to one side of the block 501.

[0055] The outer wall of the hinge bar 306 is fixedly connected to the limit slide 508, the outer wall of the limit slide 508 is slidably connected to the sliding sleeve 505, and the outer wall of the sliding sleeve 505 is fixedly connected to the counterweight block 506, which acts as a counterweight.

[0056] The counterweight block 506 is a square block structure, and the outer wall of the hinge bar 306 is provided with a scale groove 507, which is an elongated strip groove;

[0057] When the brushless motor coil 7 is pressed between each roller 301, the outer bottom of the brushless motor coil 7 will be against the pad 405 below, and the brushless motor coil 7 will be padded, so that the parts extending from the middle of the brushless motor coil 7 will not directly contact the roller 301 below to cause deformation problems. While supporting the outer ring part of the bottom of the brushless motor coil 7, when the size of the brushless motor coil 7 is slightly different, the distance of pushing the roller 301 to open and close is also different. The position of the pad 405 is determined by the distance that the bottom arc plate 305 moves synchronously with the telescopic rod B403 and the fixed block 404 through the movement of the roller 301. Therefore, the pad 405 below will correspondingly catch the bottom of the brushless motor coil 7 no matter how far the outer wall of the brushless motor coil 7 pushes away the roller 301, so that even if the size of the brushless motor coil 7 deviates, it can be ensured that the pad 405 can stably padded the brushless motor coil 7.

[0058] When the pad 405 is driven to move by the fixed block 404, the telescopic rod B403, and the arc plate 305, the pad 405 slides on the limit bar 406, and the pad 405 is limited so that the pad 405 cannot be lifted up and can only slide within the limit bar 406.

[0059] When the brushless motor coils 7 of different diameters are pressed down, they will push the roller 301 and the hinge bar 306 to lift to different degrees. Different lifting angles will cause the hinge bar 306 to have different inclination angles. When the sliding sleeve 505 on the hinge bar 306 is at different inclination angles under the counterweight of the counterweight block 506, it will be supported by different forces from the inclined surface of the hinge bar 306, so that it will slide on the hinge bar 306 by different distances and pull the spring 503 to undergo different degrees of tensile deformation. Therefore, the diameter difference of the brushless motor coil 7 can be quickly judged by sliding the sliding sleeve 505 on the hinge bar 306 to different scale grooves 507, so that the staff can understand the specific size data of the brushless motor coil 7 at this time, so that the staff can take more corresponding follow-up measures.

[0060] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A brushless motor shaft press-in machine, comprising a press-in machine (1), a lift (2) provided on one side of the press-in machine (1), a press plate (9) provided at the bottom of the lift (2), a bottom plate (6) fixedly connected to the bottom of the press-in machine (1), and a fixed disk (8) fixedly connected to the top of the bottom plate (6), characterized in that: A clamping mechanism (3) and a brushless motor coil (7) are provided above the bottom plate (6); The clamping mechanism (3) comprises: A roller (301), the roller (301) is a circular disc-shaped structure, the bottom of the roller (301) is fixedly connected to the top of the base plate (6), the outer wall of the roller (301) is provided with a groove (302), the groove (302) is a circular annular groove, the inner wall of the groove (302) is slidably connected with an arc-shaped clamping block (303), the arc-shaped clamping block (303) is an arc-shaped plate-shaped structure, the roller (301) is a circular cylindrical structure, and the roller (301) is used to clamp the brushless motor coil (7); A connecting plate (304) is an arc-shaped plate-like structure, the outer wall of the connecting plate (304) is fixedly connected to the outer wall of the arc-shaped clamping block (303), the outer wall of the connecting plate (304) is fixedly connected to the arc plate (305), the outer wall of the arc plate (305) is fixedly connected to the hinge bar (306), one end of the hinge bar (306) is hinged to the hinge block (308) through a rotating shaft (307), one side of the hinge bar (306) is hinged to a torsion spring (309), and one end of the torsion spring (309) is fixedly connected to one side of the hinge block (308).

2. The brushless motor shaft pressing machine according to claim 1, characterized in that: The outer wall of the hinge block (308) is fixedly connected to the outer wall of the fixed plate (8), and rotating blocks (311) are rotatably connected on both sides of the roller (301). One side of the rotating block (311) is fixedly connected to a telescopic rod A (312), and the other end of the telescopic rod A (312) is fixedly connected to another rotating block (311).

3. The brushless motor shaft pressing machine according to claim 2, characterized in that: A support mechanism (4) is provided at the bottom of the arc plate (305), and the support mechanism (4) includes a slide bar (401). The slide bar (401) is an arc-shaped strip structure, and the top of the slide bar (401) is fixedly connected to the bottom of the arc plate (305).

4. The brushless motor shaft pressing machine according to claim 3, characterized in that: The outer wall of the slide bar (401) is slidably connected to a slide plate (402), the bottom of the slide plate (402) is fixedly connected to one end of a telescopic rod B (403), the bottom of the slide plate (402) is fixedly connected to the telescopic rod B (403), and the bottom of the telescopic rod B (403) is fixedly connected to a fixed block (404).

5. The brushless motor shaft pressing machine according to claim 4, characterized in that: A pad (405) is fixedly connected to one side of the fixed block (404), the bottom of the pad (405) is slidably connected to a limit bar (406), and the bottom of the limit bar (406) is fixedly connected to the top of the fixed disk (8).

6. The brushless motor shaft pressing machine according to claim 5, characterized in that: The outer wall of the hinge bar (306) is provided with a detection mechanism (5), and the detection mechanism (5) includes a stopper (501), the outer wall of the stopper (501) is fixedly connected to the outer wall of the hinge bar (306), the outer wall of the stopper (501) is fixedly connected to a telescopic rod C (502), one end of the telescopic rod C (502) is fixedly connected to a fixed plate (504), the outer wall of the fixed plate (504) is fixedly connected to a spring (503), and one end of the spring (503) is fixedly connected to one side of the stopper (501).

7. The brushless motor shaft pressing machine according to claim 6, characterized in that: The outer wall of the hinge bar (306) is fixedly connected to a limit slide bar (508), the outer wall of the limit slide bar (508) is slidably connected to a sliding sleeve (505), and the outer wall of the sliding sleeve (505) is fixedly connected to a counterweight block (506), and the counterweight block (506) serves as a counterweight.

8. The brushless motor shaft pressing machine according to claim 7, characterized in that: The counterweight block (506) is a square block structure, and the outer wall of the hinge bar (306) is provided with a scale groove (507), and the scale groove (507) is an elongated strip groove.

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