Stator bearing assembly machine

Abstract

This utility model discloses a stator bearing assembly machine, which achieves full automation of the stator bearing assembly process through the coordinated layout of the pressing station, bearing feeding mechanism, pressing mechanism, and unloading mechanism. The compact frame integrates all functional units, resulting in a small footprint; automated assembly line operation eliminates manual handling, significantly improving single-piece assembly efficiency; precise connection between bearing feeding and pressing actions ensures high assembly position accuracy, eliminating the misalignment and damage associated with traditional manual assembly; the unloading mechanism automatically removes finished products, ensuring continuous production. The modular design of the overall structure reduces the risk of failure and lowers maintenance costs, making it particularly suitable for the stable mass production of small and medium-sized motor stators. Compared with traditional manual assembly, it effectively improves assembly efficiency and reduces production costs.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly technology, and in particular to a stator bearing assembly machine. Background Technology

[0002] Stator bearings are critical components in rotating machinery such as electric motors. Their inner rings need to be precisely press-fitted onto designated journals of the stator assembly using an interference fit. This fit requires the bearing to maintain extremely high coaxiality and stability during the pressing process to ensure accurate final installation, uniform force distribution, and to avoid damage to the bearing raceways or stator structure. This is crucial for the smooth operation, noise control, and service life of the motor.

[0003] like Figure 2 The diagram shown is a schematic of the stator 100. During assembly, the bearing needs to be pressed into the bearing chamber 101 of the stator.

[0004] Currently, the assembly of stators and bearings generally relies on manual operation. Operators must manually align the components and then use simple tools (such as manual presses or hammers) to press them into place. This method has significant drawbacks: First, it is extremely inefficient, with long assembly times for single components, making it difficult to meet the needs of large-scale production; second, it is costly, requiring a large investment of manpower, and manual operation is prone to problems such as bearing damage, stator scratching, or improper installation due to uneven force or misalignment, resulting in a high defect rate and rework costs, becoming a key factor restricting the improvement of production efficiency and product quality. Utility Model Content

[0005] The main purpose of this invention is to propose a stator bearing assembly machine, which aims to improve the assembly efficiency of stator bearings and reduce production costs.

[0006] To achieve the above objectives, this utility model proposes a stator bearing assembly machine, comprising:

[0007] frame;

[0008] The press-fitting station, located on the frame, is used to support the stator;

[0009] A bearing feeding mechanism is installed on the frame and is used to transport the bearing to the position above the press-fitting station corresponding to the bearing chamber of the stator.

[0010] A pressing mechanism, located on the frame, is used to press the bearing located at the pressing station into the bearing chamber of the stator;

[0011] The unloading mechanism, located on the frame, is used to move the press-fitted stator bearing assembly out of the press-fitting station.

[0012] Preferably, the bearing feeding mechanism includes a hopper for accommodating multiple bearings, a first conveyor belt with a discharge port, and a material handling mechanism.

[0013] The material handling mechanism is located on the frame between the discharge port and the pressing station, and can reciprocate horizontally relative to the frame to move closer to the discharge port or the pressing station.

[0014] The bearings in the hopper can fall onto the first conveyor belt and be sent to the discharge port. The material handling mechanism then takes the bearings located at the discharge port and sends them to the pressing station.

[0015] Preferably, the material handling mechanism includes a rotatable material handling end, which can be rotatably rotated to face upwards or downwards;

[0016] The discharge port is a vertically extending through hole;

[0017] When the material receiving end is flipped to an upward position and corresponds vertically with the lower end of the material outlet, it can receive the bearing from the material outlet;

[0018] When the material taking end is flipped to a downward position and corresponds vertically with the bearing chamber of the stator in the pressing position, the bearing can be released and fall into the position of the corresponding bearing chamber of the stator.

[0019] Preferably, the material handling mechanism further includes a first driving mechanism and a releasing mechanism;

[0020] The first driving mechanism is used to drive the material picking end to perform a flipping action;

[0021] The material receiving end is provided with a material hole for accommodating the bearing; the inner wall of the material hole is provided with a magnetic suction element for adsorbing the bearing.

[0022] The release mechanism includes a pin and a driver;

[0023] The ejector pin can be inserted into the material hole, and the driver is used to drive the ejector pin to move axially along the material hole so as to drive the bearing to disengage from the magnetic attraction.

[0024] Preferably, it also includes a turntable, which is pivotally mounted on the frame about a vertical axis;

[0025] The pressing station is located on the turntable and can move synchronously with the rotation of the turntable;

[0026] The pressing station can sequentially pass through the stator loading position, bearing loading position and pressing operation position as the turntable rotates.

[0027] Preferably, it also includes a rivet point detection mechanism, which includes a CCD camera, a light source mechanism, and an image analysis unit;

[0028] The rivet detection mechanism is used to acquire and analyze images of the rivets of the stator bearing assembly to determine whether they meet the preset standards.

[0029] Preferably, the feeding mechanism includes a second conveyor belt and a first gripping mechanism;

[0030] The first material handling mechanism includes a first swing arm, a first pneumatic gripper, and a first lifting assembly;

[0031] The second conveyor belt is disposed on the frame;

[0032] The first swing arm is pivotally mounted on the frame via a first vertical pivot axis, and the first swing arm can rotate about the axis of the first vertical pivot axis;

[0033] The first pneumatic gripper is located at the end of the first swing arm and is used to grip the stator bearing assembly. The first pneumatic gripper can move between the position directly above the stator loading position and the position directly above the second conveyor belt as the first swing arm rotates.

[0034] The first lifting component is located at the bottom of the first vertical pivot shaft and is used to drive the first vertical pivot shaft to perform vertical reciprocating motion in order to realize the height adjustment function of the first pneumatic gripper.

[0035] Preferably, it also includes a second material gripping mechanism located downstream of the second conveyor belt and a clearance measuring mechanism with a measuring station;

[0036] The second gripping mechanism includes a second swing arm, a second pneumatic gripper, and a second lifting assembly;

[0037] The second swing arm is pivotally mounted on the frame via a second vertical pivot axis, and the second swing arm can rotate about the axis of the second vertical pivot axis;

[0038] The second pneumatic gripper is located at the end of the second swing arm and is used to grip the stator bearing assembly. The second pneumatic gripper can move between the position directly above the measuring station and the position directly above the second conveyor belt as the second swing arm rotates.

[0039] The second lifting component is located at the bottom of the second vertical pivot shaft and is used to drive the second vertical pivot shaft to perform vertical reciprocating motion in order to realize the height adjustment function of the second pneumatic gripper.

[0040] The clearance measuring mechanism is used to measure the clearance of the stator bearing assembly to determine whether it meets a preset standard. Preferably,

[0041] The clearance measuring mechanism includes a measuring table, a rotary power unit, a push rod, an opposing clamping measuring unit, and a control unit that is signal-connected to the rotary power unit and the opposing clamping measuring unit;

[0042] The measuring platform is used to place the stator bearing assembly;

[0043] The rotary power unit includes a vertical moving mechanism and a rotary head. The lower end of the rotary head is provided with a clamp for fixing the inner ring of the bearing. The upper end of the push rod is fixedly connected to the bottom wall of the rotary head, and the lower end of the push rod is suspended and extends in a direction parallel to the rotation axis of the rotary head.

[0044] The object clamping and measuring unit includes a horizontally symmetrically arranged clearance sensor and a stator positioning device, which are synchronously moving in opposite directions through a linear drive module.

[0045] The probe of the clearance sensor is an elastic floating structure and has a built-in displacement sensor;

[0046] When the rotating head rotates, it contacts the connecting foot of the stator through the push rod, thereby driving the stator to achieve indexing rotation.

[0047] Preferably, it also includes a storage compartment disposed on the frame, the storage compartment being located downstream of the unloading mechanism.

[0048] This utility model's technical solution achieves full automation of stator bearing assembly through the coordinated layout of the press-fitting station, bearing loading mechanism, press-fitting mechanism, and unloading mechanism. The compact frame integrates all functional units, resulting in a small footprint; automated assembly line operations eliminate manual handling, significantly improving single-piece assembly efficiency; precise coordination between bearing loading and press-fitting ensures high assembly position accuracy, preventing misalignment and damage common in traditional manual assembly; and the unloading mechanism automatically removes finished products, ensuring continuous production. The modular design of the overall structure reduces the risk of failure and minimizes maintenance costs, making it particularly suitable for the stable mass production of small and medium-sized motor stators. Compared to traditional manual assembly, it effectively improves assembly efficiency and reduces production costs. Attached Figure Description

[0049] Figure 1 This is a perspective view of the present utility model;

[0050] Figure 2 A schematic diagram of the stator;

[0051] Figure 3 This is a first-angle perspective view of the bearing feeding mechanism and the material handling mechanism.

[0052] Figure 4 This is a second-angle perspective view of the bearing feeding mechanism and the bearing unloading mechanism;

[0053] Figure 5 A 3D view of the pressing mechanism and turntable;

[0054] Figure 6 A three-dimensional view of the rivet detection mechanism and the first material handling mechanism;

[0055] Figure 7 This is a three-dimensional view of the clearance measurement mechanism. Detailed Implementation

[0056] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0057] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0058] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0059] This utility model proposes a stator bearing assembly machine.

[0060] In this embodiment of the utility model, such as Figures 1 to 7 As shown, the stator bearing assembly machine includes:

[0061] Rack 1;

[0062] Pressing station 01 is located on the frame 1 and is used to support the stator 100;

[0063] The bearing feeding mechanism 2 is located on the frame 1 and is used to transport the bearing to the position above the press-fitting station 01, which corresponds to the bearing chamber 101 of the stator.

[0064] The pressing mechanism 3 is disposed on the frame 1 and is used to press the bearing located at the pressing station 01 into the bearing chamber of the stator;

[0065] The unloading mechanism, located on the frame 1, is used to remove the press-fitted stator bearing assembly from the press-fitting station 01. It should be noted that the unloading mechanism can be replaced by manual removal.

[0066] Specifically, the bearing feeding mechanism 2 includes a hopper 21 for accommodating multiple bearings, a first conveyor belt 22 with a discharge port 23, and a material handling mechanism 4.

[0067] The material handling mechanism 4 is located on the frame 1 between the discharge port 23 and the pressing station 01, and can reciprocate horizontally relative to the frame 1 to move closer to the discharge port 23 or closer to the pressing station 01.

[0068] The bearings in the hopper 21 can fall onto the first conveyor belt 22 and be sent to the discharge port 23. The material handling mechanism 4 takes away the bearings located at the discharge port 23 and sends them to the pressing station 01.

[0069] The material handling mechanism 4 can refer to the robot or clamp in the prior art. When it is a robot or clamp, the material handling mechanism 4 can also perform vertical reciprocating motion relative to the frame 1 to realize the height position adjustment of the material handling mechanism 4.

[0070] When the material handling mechanism 4 moves horizontally to a position above the discharge port 23, it moves downwards by adjusting its height to approach and grab the bearing at the discharge port 23. It then moves upwards with the bearing away from the discharge port 23 and moves horizontally to a position near the pressing station 01. It moves downwards by adjusting its height to approach the stator at the pressing station 01, releases the bearing, and places it on the bearing chamber of the stator. Finally, the pressing mechanism 3 presses the bearing into the bearing chamber.

[0071] Alternatively, the material handling mechanism 4 may adopt the following embodiment:

[0072] Specifically, the material handling mechanism 4 includes a rotatable material handling end 41, which can be rotatably rotated to face upwards or downwards;

[0073] The discharge port 23 is a vertically extending through hole; the first conveyor belt is provided with a guide component 221, and the first conveyor belt forms a material channel with a width that is suitable for the outer diameter of the bearing by cooperating with the inner side wall of the guide component 221. The discharge port 23 is located at the end of the material channel. After the bearing is moved out of the hopper 21, it enters the material channel. As the first conveyor belt 22 rotates, the bearing moves along the material channel toward the discharge port 23. The upper end of the discharge port 23 is the inlet and the lower end is the outlet. The bearings enter the discharge port 23 one by one from the inlet.

[0074] Specifically, the feed channel is detachably fixed with an adjusting component, which can be used to adjust the width of the feed channel to accommodate bearings of different sizes and specifications.

[0075] The bearing can enter the discharge port 23 naturally during the process, or it can be driven into the discharge port 23 by a matching structure.

[0076] To accommodate the structure, a magnet is placed near the inlet of the discharge port 23, and a pressure needle 24 is placed above the inlet. The pressure needle 24 can be inserted vertically into the discharge port 23 or withdrawn. When the bearing moves to the inlet of the discharge port 23, it can be attracted by the magnet and suspended at the inlet of the discharge port 23. Then, the magnet is pressed into the discharge port 23 by the downward movement of the pressure needle 24, thereby achieving the effect of the bearings entering the discharge port 23 one by one.

[0077] Specifically, the pressure needle 24 is inserted into or withdrawn from the discharge port 23 by a cylinder or linear motor.

[0078] When the feeding end 41 is flipped to an upward position and (moves horizontally with the feeding mechanism 4) corresponds vertically to the lower end of the discharge port 23, it can receive the bearing from the discharge port 23;

[0079] When the material taking end 41 is flipped to a downward position and (moves horizontally with the material taking mechanism 4) corresponds vertically to the bearing chamber of the stator in the pressing position 01, the bearing can be released so that the bearing falls to the position of the corresponding bearing chamber of the stator.

[0080] Specifically, the discharge method of hopper 21 can refer to existing technology, or adopt the following embodiments:

[0081] The bearing loading mechanism 2 is further provided with a pusher 25. The hopper 21 has at least one vertically extending trough for accommodating multiple vertically stacked bearings. The lower end of the trough has a communicating front opening and a rear opening. The pusher 25 is horizontally inserted into the rear opening to push the bottom bearing forward, allowing it to enter the hopper through the front opening. When the pusher 25 exits the rear opening, the upper bearing automatically falls to the bottom of the trough due to gravity.

[0082] Specifically, the hopper 21 is provided with multiple parallel material troughs, and each material trough is provided with an independent pusher 25.

[0083] Specifically, the pusher 25 is connected to a cylinder or a linear motor. When the pusher 25 moves to the end of its stroke, the front end of the pusher 25 is flush with the outer edge of the front opening.

[0084] Specifically, the material handling mechanism 4 further includes a first driving mechanism 42 and a release mechanism;

[0085] The first driving mechanism 42 is used to drive the material taking end 41 to perform a flipping action;

[0086] The material receiving end 41 is provided with a material hole for accommodating bearings; the inner wall of the material hole is provided with a magnetic suction element for adsorbing bearings.

[0087] The release mechanism includes a pin 43 and a driver 44;

[0088] The ejector pin 43 can be inserted into the material hole, and the driver 44 is used to drive the ejector pin 43 to move along the axial direction of the material hole so as to drive the bearing to disengage from the magnetic attraction.

[0089] Specifically, the driver 44 is a cylinder or a linear motor.

[0090] Specifically, the material handling mechanism 4 also includes a first support 45 and a second support 46. The second support 46 is pivotally mounted on the first support 45 via a rotating shaft. The material handling end 41 and the release mechanism are located on the second support 46.

[0091] The first driving mechanism 42 includes a gear, a rack, and an actuator. The gear is fixedly sleeved on the rotating shaft. The rack is connected to the actuator and meshes with the gear. When the actuator drives the rack, it can drive the material picking end 41 to rotate.

[0092] Specifically, the actuator is a cylinder or a linear motor.

[0093] Specifically, the material hole is provided with a vertically extending first positioning pin, and the pressing station 01 is provided with a vertically extending second positioning pin. The diameters of the first positioning pin and the second positioning pin are smaller than the inner diameter of the bearing.

[0094] When the bearing falls into the material hole, the inner ring of the bearing is movably sleeved on the first positioning pin;

[0095] When the stator is placed at press-fitting station 01, the bearing housing of the stator is movably fitted onto the second positioning pin;

[0096] When the material picking end 41 is flipped so that the material hole faces downward and is located directly above the pressing station 01, the first positioning pin and the second positioning pin are coaxially aligned.

[0097] After the bearing is released, it can fall and be fitted onto the second positioning pin.

[0098] Specifically, the height adjustment of the material handling mechanism 4 and its horizontal reciprocating motion can be achieved by using a cylinder or linear motor in conjunction with the guide rail.

[0099] Specifically, it also includes a turntable 5, which is pivotally mounted on the frame 1 about a vertical axis;

[0100] The pressing station 01 is located on the turntable 5 and can move synchronously with the rotation of the turntable 5.

[0101] The pressing station 01 can pass through the stator loading station 02, the bearing loading station 03 and the pressing station 04 in sequence as the turntable 5 rotates.

[0102] When the pressing station 01 arrives at the stator loading station 02, the stator can be placed on the pressing station 01 manually or by a robot. When the pressing station 01 and the stator arrive at the bearing loading station 03, the bearing loading mechanism 2 places the bearing in the bearing chamber of the stator. When the pressing station 01, the stator and the bearing arrive at the pressing station 04, the pressing mechanism 3 presses the bearing into the bearing chamber of the stator.

[0103] Specifically, the rotation of the turntable 5 is achieved by a rotary motor. For example, a rotary motor is vertically fixed at the position below the turntable 5 on the frame 1, and the rotating end of the rotary motor is fixedly connected to the bottom of the turntable 5, so that the turntable 5 is driven to rotate when the rotating end is running.

[0104] Specifically, the turntable 5 is provided with at least one material platform 51. The material platform 51 is movably installed on the turntable 5 via a guide column and can move up and down relative to the turntable 5. The guide column is fitted with a top spring 52. The upper end of the top spring 52 elastically abuts against the bottom wall of the material platform 51. The pressing station 01 is located on the material platform 51. The top spring 52 can realize the elastic buffer function during the pressing operation, improve the pressing effect, and avoid excessive pressing that could damage the stator and bearings.

[0105] Specifically, it also includes a rivet detection mechanism 6, which includes a CCD camera 61, a light source mechanism 62, and an image analysis unit;

[0106] The rivet detection mechanism 6 is used to acquire and analyze images of the rivets of the stator bearing assembly to determine whether they meet the preset standards.

[0107] Specifically, the pressing station 01 can sequentially pass through the stator loading station 02, the bearing loading station 03, the pressing station 04, and the rivet detection station 05 as the turntable 5 rotates;

[0108] Specifically, the turntable 5 is preferably provided with four material platforms 51.

[0109] The bearing is pressed into the bearing chamber on the stator by the pressing mechanism 3, which is a pressing and riveting process. After the pressing and riveting is completed, the stator bearing assembly will have rivet points, which need to be detected and analyzed by the rivet point detection mechanism 6 to see if they meet the standards.

[0110] The principle behind the CCD camera 61's detection of rivets is primarily based on high-precision optical imaging and image processing technology.

[0111] First, the CCD camera 61, in conjunction with the light source mechanism 62, captures high-resolution images of the rivet area of ​​the stator bearing assembly. Then, image processing algorithms (such as edge detection, contour analysis, dimensional measurement, or template matching) accurately identify the position, shape, quantity, size (such as diameter and height), and integrity (such as the presence of cracks or deformation) of the rivets. The system compares the extracted feature data in real time with preset acceptance standards to automatically determine whether the rivets meet process requirements (such as proper riveting, no missing rivets, or over-riveting). This achieves non-contact, high-precision, and high-speed automated inspection, significantly improving inspection efficiency and avoiding human error. Second, it ensures consistent riveting quality, effectively preventing bearing loosening or stator structure failure due to poor rivet quality, thus improving product reliability. Finally, the inspection results can be digitally recorded and traced, providing data support for process optimization and quality control, while reducing labor costs and inspection intensity.

[0112] Specifically, the feeding mechanism includes a second conveyor belt 71 and a first gripping mechanism 72;

[0113] The first material handling mechanism 72 includes a first swing arm 73, a first pneumatic gripper 75, and a first lifting assembly 76;

[0114] The second conveyor belt 71 is disposed on the frame 1;

[0115] The first swing arm 73 is pivotally mounted on the frame 1 via a first vertical pivot shaft 74, and the first swing arm 73 can rotate about the axis of the first vertical pivot shaft 74;

[0116] The first pneumatic gripper 75 is located at the end of the first swing arm 73 and is used to grip the stator bearing assembly. The first pneumatic gripper 75 can move between the position directly above the stator loading position 02 and the position directly above the second conveyor belt 71 as the first swing arm 73 rotates.

[0117] The first lifting component 76 is located at the bottom of the first vertical pivot shaft 74 and is used to drive the first vertical pivot shaft 74 to perform vertical reciprocating motion in order to realize the height adjustment function of the first pneumatic gripper 75.

[0118] Specifically, the first swing arm 73 rotates by the rotation of the first vertical pivot shaft 74, which is driven by a rotary motor. For example, the rotating end of the rotary motor is directly fixedly connected to the bottom of the first vertical pivot shaft 74, or the rotary motor drives the first vertical pivot shaft 74 to pivot via a transmission belt.

[0119] Alternatively, as in this embodiment, a gear and a rack are provided at the bottom of the first vertical pivot shaft 74. The two work together to form a transmission assembly. The rack is driven to move linearly by a cylinder, thereby driving the first vertical pivot shaft 74 to rotate through the gear.

[0120] Specifically, the first lifting component 76 is a cylinder.

[0121] Specifically, the second conveyor belt 71 is provided with a material holder 77 for placing stator bearing assemblies.

[0122] Specifically, the first swing arm 73 is elongated and has the first pneumatic gripper 75 at both ends.

[0123] Specifically, the second conveyor belt 71 is equipped with a lifting mechanism at the corresponding material pick-up or drop-off position. The material seat 77 is placed on the second conveyor belt 71. When the second conveyor belt transports the material seat 77 to the material pick-up or drop-off position, the lifting mechanism lifts the material seat 77 to detach it from the second conveyor belt 71. After picking up or dropping the material, the lifting mechanism lowers the material seat 77, and the second conveyor belt continues to transport the material seat 77. The lifting mechanism can use existing technology, and its specific structural principle will not be described in detail here.

[0124] Specifically, it also includes a second material gripping mechanism 78 located downstream of the second conveyor belt 71 and a clearance measuring mechanism 8 with a measuring station;

[0125] The second material gripping mechanism 78 includes a second swing arm, a second pneumatic gripper, and a second lifting assembly;

[0126] The second swing arm is pivotally mounted on the frame 1 via a second vertical pivot axis, and the second swing arm can rotate about the axis of the second vertical pivot axis;

[0127] The second pneumatic gripper is located at the end of the second swing arm and is used to grip the stator bearing assembly. The second pneumatic gripper can move between the position directly above the measuring station and the position directly above the second conveyor belt 71 as the second swing arm rotates.

[0128] The second lifting component is located at the bottom of the second vertical pivot shaft and is used to drive the second vertical pivot shaft to perform vertical reciprocating motion in order to realize the height adjustment function of the second pneumatic gripper.

[0129] The clearance measuring mechanism 8 is used to measure the clearance of the stator bearing assembly to determine whether it meets the preset standard. When the clearance meets the preset standard, it can ensure the normal operation performance, lifespan, low noise, and low vibration of the bearing.

[0130] Specifically, the power source structure of the second swing arm can be directly referenced from the power source structure of the first swing arm 73, and the second lifting component is a cylinder.

[0131] Specifically, the first pneumatic gripper 75 and the second pneumatic gripper are existing technologies, and their specific structural principles will not be elaborated here.

[0132] After the first material handling mechanism 72 places the stator bearing assembly onto the material seat 77 of the second conveyor belt 71, the stator bearing assembly travels down to the second material handling mechanism 78 via the second conveyor belt 71. The second material handling mechanism 78 then handles the stator bearing assembly and sends it to the clearance measuring mechanism 8 for measurement.

[0133] Specifically, the clearance measuring mechanism 8 includes a measuring platform 81, a rotary power unit 82, a push rod 83, an opposing clamping measuring unit, and a control unit that is signal-connected to the rotary power unit 82 and the opposing clamping measuring unit;

[0134] The measuring stage 81 is used to place the stator bearing assembly;

[0135] The rotary power unit 82 includes a vertical moving mechanism 84 and a rotating head 85. The lower end of the rotating head 85 is provided with a clamping part 86 for fixing the inner ring of the bearing. The upper end of the push rod 83 is fixedly connected to the bottom wall of the rotating head 85, and the lower end of the push rod 83 is suspended and extends in a direction parallel to the rotation axis of the rotating head 85.

[0136] The object clamping and measuring unit includes a horizontally symmetrically arranged backlash sensor 87 and a stator positioning device 88. The backlash sensor 87 and the stator positioning device 88 are synchronously moving in opposite directions through a linear drive module. The probe of the backlash sensor 87 is an elastic floating structure with a built-in displacement sensor. When the rotating head 85 rotates, it contacts the connecting foot 102 of the stator through the push rod 83 and drives the stator to achieve indexing rotation.

[0137] The rotating head 85 is rotated by a rotary motor. The vertical moving mechanism 84 includes a cylinder, a slider, and a slide rail. The outer wall of the rotating power unit 82 is fixedly connected to the slider, or the outer shell of the rotating power unit 82 is used as the slider.

[0138] The steps for measuring clearance are as follows:

[0139] 1. The stator bearing assembly is taken out from the second conveyor belt 71 and placed on the measuring table 81 by the second material gripping mechanism 78.

[0140] 2. The rotary power unit 82 moves downwards and approaches the stator bearing assembly on the measuring table 81 through the vertical moving mechanism 84 to achieve positioning and alignment, and fixes the inner ring of the bearing through the clamp 86 to form a measurement reference.

[0141] 3. The backlash sensor 87 and the stator clamp 88 move forward simultaneously to clamp the stator and then release the stator. The working state is simulated by applying and removing the measuring load to achieve the first measurement.

[0142] 4. By rotating the rotating head 85 and cooperating with the connecting foot of the push rod 83 to the stator, the stator is rotated 120 degrees, changing the angle of the measuring load direction relative to the original position of the bearing / stator.

[0143] 5. Repeat steps 3 and 4 twice, applying loads at three equally divided points along the circumference and measuring the displacement.

[0144] 6. After measurement is completed, the workpiece is removed, and the system calculates the final structure based on the displacement data measured on three sides.

[0145] Each time a load is applied during clamping, the system records the displacement of the rotating power shaft, i.e., the center of the bearing inner ring, relative to the fixed measurement reference established by the clearance sensor 87 / stator clamp. The system usually calculates the average of three displacements as the measured radial clearance value of the stator bearing assembly, compares this average value with the set acceptable range, and determines whether the assembly is qualified.

[0146] Specifically, the pressing mechanism 3 mainly includes a pressing head 31 that can move up and down and an actuator that drives the pressing head 31 to move. The actuator can be a cylinder or a linear motor, which is existing technology, and its specific structure and principle will not be described in detail here.

[0147] Specifically, it also includes a storage compartment 9 located on the frame 1, which is downstream of the unloading mechanism and is used to store stator bearing assemblies of good or poor quality.

[0148] Specifically, sensors can be installed at various locations in this utility model as needed to sense the state of each location, such as whether the bearing is at the discharge port 23 or whether the pusher 25 is in the trough.

[0149] This utility model's technical solution achieves full automation of stator bearing assembly through the coordinated layout of the press-fitting station, bearing loading mechanism, press-fitting mechanism, and unloading mechanism. The compact frame integrates all functional units, resulting in a small footprint; automated assembly line operations eliminate manual handling, significantly improving single-piece assembly efficiency; precise coordination between bearing loading and press-fitting ensures high assembly position accuracy, preventing misalignment and damage common in traditional manual assembly; and the unloading mechanism automatically removes finished products, ensuring continuous production. The modular design of the overall structure reduces the risk of failure and minimizes maintenance costs, making it particularly suitable for the stable mass production of small and medium-sized motor stators. Compared to traditional manual assembly, it effectively improves assembly efficiency and reduces production costs.

[0150] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A stator bearing assembly machine, characterized in that, include: Rack (1); The press-fitting station (01) is located on the frame (1) and is used to support the stator (100). The bearing loading mechanism (2) is set on the frame (1) and is used to transport the bearing to the position above the press-fitting station (01) corresponding to the bearing chamber (101) of the stator; The pressing mechanism (3) is set on the frame (1) and is used to press the bearing located at the pressing station (01) into the bearing chamber of the stator; The unloading mechanism is located on the frame (1) and is used to move the press-fitted stator bearing assembly out of the press-fitting station (01).

2. The stator bearing assembly machine as described in claim 1, characterized in that: The bearing feeding mechanism (2) includes a hopper (21) for accommodating multiple bearings, a first conveyor belt (22) with a discharge port (23) and a material handling mechanism (4). The material handling mechanism (4) is located on the frame (1) between the discharge port (23) and the pressing station (01), and can reciprocate horizontally relative to the frame (1) to approach the discharge port (23) or the pressing station (01). The bearing in the hopper (21) can fall onto the first conveyor belt (22) and be sent to the discharge port (23). The material handling mechanism (4) takes away the bearing located at the discharge port (23) and sends it to the pressing station (01).

3. The stator bearing assembly machine as described in claim 2, characterized in that: The material handling mechanism (4) includes a rotatable material handling end (41), which can be rotatable to face upward or downward; The discharge port (23) is a vertically extending through hole; When the feeding end (41) is flipped to an upward position and corresponds vertically to the lower end of the discharge port (23), it can receive the bearing from the discharge port (23); When the material taking end (41) is flipped to a downward position and corresponds vertically to the bearing chamber of the stator in the pressing station (01), the bearing can be released so that the bearing falls to the position of the bearing chamber corresponding to the stator.

4. The stator bearing assembly machine as described in claim 3, characterized in that: The material handling mechanism (4) further includes a first driving mechanism (42) and a release mechanism; The first driving mechanism (42) is used to drive the material taking end (41) to perform a flipping action; The material receiving end (41) is provided with a material hole for accommodating bearings; the inner wall of the material hole is provided with a magnetic suction element for adsorbing bearings; The release mechanism includes a pin (43) and a driver (44). The ejector pin (43) can be inserted into the material hole, and the driver (44) is used to drive the ejector pin (43) to move along the axial direction of the material hole so as to drive the bearing to disengage from the magnetic attraction.

5. The stator bearing assembly machine as described in claim 1, characterized in that: It also includes a turntable (5), which is pivotally mounted on the frame (1) about a vertical axis. The pressing station (01) is located on the turntable (5) and can move synchronously with the rotation of the turntable (5); The pressing station (01) can pass through the stator loading station (02), the bearing loading station (03) and the pressing station (04) in sequence as the turntable (5) rotates.

6. The stator bearing assembly machine as described in claim 1, characterized in that: It also includes a rivet detection mechanism (6), which includes a CCD camera (61), a light source mechanism (62), and an image analysis unit; The rivet detection mechanism (6) is used to collect and analyze images of the rivets of the stator bearing assembly to determine whether they meet the preset standards.

7. The stator bearing assembly machine as described in claim 1, characterized in that: The feeding mechanism includes a second conveyor belt (71) and a first gripping mechanism (72). The first material gripping mechanism (72) includes a first swing arm (73), a first pneumatic gripper (75), and a first lifting assembly (76); The second conveyor belt (71) is disposed on the frame (1); The first swing arm (73) is pivotally mounted on the frame (1) via a first vertical pivot axis (74), and the first swing arm (73) can rotate about the axis of the first vertical pivot axis (74); The first pneumatic gripper (75) is located at the end of the first swing arm (73) and is used to grip the stator bearing assembly. The first pneumatic gripper (75) can move between the position directly above the stator loading position (02) and the position directly above the second conveyor belt (71) as the first swing arm (73) rotates. The first lifting component (76) is located at the bottom of the first vertical pivot shaft (74) and is used to drive the first vertical pivot shaft (74) to perform vertical reciprocating motion in order to realize the height adjustment function of the first pneumatic gripper (75).

8. The stator bearing assembly machine as described in claim 7, characterized in that: It also includes a second material gripping mechanism (78) located downstream of the second conveyor belt (71) and a clearance measuring mechanism (8) with a measuring station. The second material gripping mechanism (78) includes a second swing arm, a second pneumatic gripper, and a second lifting assembly; The second swing arm is pivotally mounted on the frame (1) via a second vertical pivot axis, and the second swing arm can rotate about the axis of the second vertical pivot axis; The second pneumatic gripper is located at the end of the second swing arm and is used to grip the stator bearing assembly. The second pneumatic gripper can move between the position directly above the measuring station and the position directly above the second conveyor belt (71) as the second swing arm rotates. The second lifting component is located at the bottom of the second vertical pivot shaft and is used to drive the second vertical pivot shaft to perform vertical reciprocating motion in order to realize the height adjustment function of the second pneumatic gripper. The clearance measuring mechanism (8) is used to measure the clearance of the stator bearing assembly to determine whether it meets the preset standard.

9. The stator bearing assembly machine as described in claim 8, characterized in that: The clearance measuring mechanism (8) includes a measuring table (81), a rotary power unit (82), a push rod (83), an opposing clamping measuring unit, and a control unit that is signal-connected to the rotary power unit (82) and the opposing clamping measuring unit; The measuring stage (81) is used to place the stator bearing assembly; The rotary power unit (82) includes a vertical moving mechanism (84) and a rotating head (85). The lower end of the rotating head (85) is provided with a clamp (86) for fixing the inner ring of the bearing. The upper end of the push rod (83) is fixedly connected to the bottom wall of the rotating head (85). The lower end of the push rod (83) is suspended and its extension direction is parallel to the rotation axis of the rotating head (85). The opposing clamping measurement unit includes a horizontally symmetrically arranged clearance sensor (87) and stator clamp (88), and the clearance sensor (87) and stator clamp (88) are respectively driven by a linear drive module to achieve synchronous opposite movement. The probe of the clearance sensor (87) is an elastic floating structure with a built-in displacement sensor; When the rotating head (85) rotates, it contacts the connecting foot (102) of the stator through the push rod (83) and drives the stator to achieve indexing rotation.

10. The stator bearing assembly machine as described in any one of claims 1-9, characterized in that: It also includes a storage compartment (9) located on the frame (1), which is downstream of the feeding mechanism.

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