A bearing play measuring mechanism

Abstract

The utility model discloses a bearing play measuring mechanism, its through the original structure of rotary power unit integrated push rod drive stator connecting foot, combines the three point graduation measurement algorithm of opposite clamping measurement unit, completely subverts traditional manual detection mode. The detection time is greatly shortened, and the measuring efficiency is improved, and the high -speed production line rhythm is directly matched, and the measurement repeatability precision of opposite clamping measurement unit is high, and the micron level play change is captured accurately, and the equipment utilizes the stator shell original connecting foot as the driving fulcrum, saves the special rotary clamp and makes the manufacturing cost reduce, and the maintenance -free design can reduce the downtime loss, provides high reliable, low -cost, full -automatic quality guarantee foundation for motor intelligent manufacturing.

Description

Technical Field

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

[0002] like Figure 2 The diagram shown is a schematic of a stator bearing assembly, which has a connecting leg 100.

[0003] In the field of motor manufacturing, the radial clearance detection of stator bearing assemblies is directly related to the motor's operating performance and lifespan.

[0004] Current mainstream inspection methods rely on manual operation: workers manually measure the displacement of the inner and outer rings of bearings using feeler gauges or dial indicators, which is time-consuming and the measurement accuracy is significantly affected by the operator's experience. A more prominent problem is that manual inspection cannot effectively monitor the dynamic changes in bearing clearance caused by the riveting process, often leading to batch quality accidents due to missed detections or misjudgments. With the upgrading of motor production capacity, this inefficient, high-cost, and unreliable inspection mode has become a bottleneck restricting production automation. Utility Model Content

[0005] The main purpose of this invention is to propose a bearing clearance measuring mechanism, which aims to improve the efficiency and accuracy of bearing clearance measurement in stator bearing assemblies and reduce production costs.

[0006] To achieve the above objectives, this utility model proposes a bearing clearance measuring mechanism, comprising:

[0007] A measuring table, used to place a stator bearing assembly;

[0008] A rotary power unit is located above the measuring platform and includes a vertical moving mechanism and a rotating head. The lower end of the rotating head is provided with a clamp for fixing the inner ring of the bearing.

[0009] A push rod, the upper end of which is fixedly connected to the bottom wall of the rotating head, and the lower end of which is suspended and extends in a direction parallel to the rotation axis of the rotating head;

[0010] The opposing clamping measurement unit includes a horizontally symmetrically arranged clearance sensor and stator clamp. The clearance sensor and stator clamp are synchronously moving in opposite directions through a first linear drive module and a second linear drive module, respectively, to clamp or release the stator bearing assembly.

[0011] A control unit is used to signal connect with the rotary power unit and the opposing clamping measurement unit.

[0012] When the rotating head rotates, it can contact the connecting foot of the stator through the push rod, and drive the stator to achieve indexing rotation.

[0013] Preferably, the rotary power unit includes a rotary motor, and the rotary head rotates via the rotary motor.

[0014] Preferably, the measuring platform is fixed with a vertically extending positioning pin;

[0015] When the stator bearing assembly is placed on the measuring table, the inner ring of the bearing is movably fitted onto the positioning pin.

[0016] Preferably, the probe of the clearance sensor is an elastic floating structure with a built-in displacement sensor.

[0017] Preferably, the first linear drive module includes a first bracket, a first cylinder, a first slider, and a first guide rail;

[0018] The first bracket is fixedly installed, the first guide rail is fixed to the first bracket, the first sliding member is slidably assembled on the first guide rail, the cylinder body of the first cylinder is fixed to the first bracket, and the actuating end of the first cylinder is fixedly connected to the first sliding member.

[0019] The clearance sensor is mounted on the first sliding member.

[0020] Preferably, the second linear drive module includes a second bracket, a second cylinder, a second slider, and a second guide rail;

[0021] The second bracket is fixedly installed, the second guide rail is fixed to the second bracket, the second sliding member is slidably assembled on the second guide rail, the cylinder body of the second cylinder is fixed to the second bracket, and the actuating end of the second cylinder is fixedly connected to the second sliding member.

[0022] The stator holder is assembled on the second sliding member.

[0023] Preferably, the actuator end of the stator is provided with a split constraint structure;

[0024] The split-type constraint structure includes a pair of spaced-apart clips, the free end walls of which are inclined surfaces for contacting the stator bearing assembly.

[0025] Preferably, the bottom of the measuring platform is connected to a third linear drive module, and the measuring platform can move between positions that are opposite to and offset from the rotating head by the drive of the third linear drive module;

[0026] The third linear module includes a third cylinder, a third sliding component, and a third guide rail;

[0027] The third sliding member is slidably assembled on the third guide rail, the actuating end of the third cylinder is fixedly connected to the third sliding member, and the bottom of the measuring platform is fixedly connected to the third sliding member.

[0028] Preferably, it also includes a first elastic telescopic component and a first positioning frame;

[0029] The first elastic telescopic member is disposed on the third sliding member, and the first positioning frame is fixed to the end of the third guide rail and is opposite to the first elastic telescopic member;

[0030] The first telescopic member can move between positions that elastically abut against and move away from the first positioning frame as the third sliding member moves.

[0031] Preferably, the vertical moving mechanism includes a fourth cylinder, a fourth sliding member, and a fourth guide rail, and the outer wall of the rotary power unit is fixedly connected to the fourth sliding member;

[0032] It is also provided with a vertically extending support frame, which is fixed to one side of the measuring platform;

[0033] The fourth guide rail is fixedly mounted on the upright frame, and the fourth sliding member is slidably engaged with the fourth guide rail.

[0034] The fourth cylinder is vertically fixed to the top of the stand, and the actuating end of the fourth cylinder faces directly downward and is fixedly connected to the top wall of the fourth sliding member.

[0035] This utility model's technical solution, through its unique structure of integrating a rotary power unit with a push rod to drive the stator connecting feet, combined with a three-point indexing measurement algorithm of the opposing clamping measurement unit, completely overturns the traditional manual inspection mode. It significantly shortens inspection time, improves measurement efficiency, and directly matches the pace of high-speed production lines. The opposing clamping measurement unit boasts high measurement repeatability and accuracy, precisely capturing micron-level clearance changes. The equipment utilizes the stator housing's native connecting feet as drive fulcrums, eliminating the need for dedicated rotary fixtures, thus reducing manufacturing costs. Furthermore, its maintenance-free design minimizes downtime losses, providing a highly reliable, low-cost, and fully automated quality assurance foundation for intelligent motor manufacturing. Attached Figure Description

[0036] Figure 1 This is a first-angle perspective view of the present invention;

[0037] Figure 2 This is a schematic diagram of the stator bearing assembly;

[0038] Figure 3 This is a second perspective view of the present invention. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] This utility model proposes a bearing clearance measuring mechanism.

[0043] In this embodiment of the utility model, such as Figures 1 to 3 As shown, the bearing clearance measuring mechanism includes:

[0044] Measuring platform 1, which is used to place the stator bearing assembly;

[0045] A rotary power unit is located above the measuring platform 1 and includes a vertical moving mechanism and a rotating head 21. The lower end of the rotating head 21 is provided with a clamping part 22 for fixing the inner ring of the bearing.

[0046] Push rod 3, the upper end of which is fixedly connected to the bottom wall of the rotating head 21, and the lower end of which is suspended and extends in a direction parallel to the rotation axis of the rotating head 21;

[0047] The opposing clamping measurement unit includes a horizontally symmetrically arranged clearance sensor 4 and stator clamp 5. The clearance sensor 4 and stator clamp 5 are synchronously moving in opposite directions through a first linear drive module and a second linear drive module, respectively, to clamp or release the stator bearing assembly.

[0048] A control unit is used to signal connect with the rotary power unit and the opposing clamping measurement unit.

[0049] When the rotating head 21 rotates, it can contact the connecting foot 100 of the stator through the push rod 3, and drive the stator to achieve indexing rotation.

[0050] The steps for measuring clearance are as follows:

[0051] 1. The stator bearing assembly is placed onto the measuring table 1 by manual labor or a robotic arm.

[0052] 2. The rotary power unit moves downwards through the vertical moving mechanism to approach the stator bearing assembly on the measuring table 1 for positioning and alignment, and fixes the inner ring of the bearing through the clamp 22 to form a measurement reference.

[0053] 3. The backlash sensor 4 and the stator clamp 5 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.

[0054] 4. By rotating the rotating head 21 and cooperating with the connecting foot of the push rod 3 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.

[0055] 5. Repeat steps 3 and 4 twice, applying loads at three equally divided points along the circumference and measuring the displacement.

[0056] 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.

[0057] 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 4 / 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.

[0058] Specifically, the rotating power unit includes a rotary motor 23, and the rotating head 21 rotates through the rotary motor 23.

[0059] Specifically, the measuring platform 1 is fixed with a vertically extending positioning pin 11;

[0060] When the stator bearing assembly is placed on the measuring table 1, the inner ring of the bearing is movably fitted onto the positioning pin 11.

[0061] Specifically, the probe of the gap sensor 4 is an elastic floating structure with a built-in displacement sensor.

[0062] Specifically, the first linear drive module includes a first bracket 41, a first cylinder 42, a first slider 43, and a first guide rail 44;

[0063] The first bracket 41 is fixedly installed, the first guide rail 44 is fixed to the first bracket 41, the first sliding member 43 is slidably assembled on the first guide rail 44, the cylinder body of the first cylinder 42 is fixed to the first bracket 41, and the actuating end of the first cylinder 42 is fixedly connected to the first sliding member 43.

[0064] The clearance sensor 4 is mounted on the first sliding member 43.

[0065] Specifically, the second linear drive module includes a second bracket 51, a second cylinder 52, a second slider 53, and a second guide rail 54;

[0066] The second bracket 51 is fixedly installed, the second guide rail 54 is fixed to the second bracket 51, the second sliding member 53 is slidably assembled on the second guide rail 54, the cylinder body of the second cylinder 52 is fixed to the second bracket 51, and the actuating end of the second cylinder 52 is fixedly connected to the second sliding member 53.

[0067] The stator holder 5 is assembled on the second sliding member 53.

[0068] Specifically, the actuator end of the stator positioning device 5 is provided with a split constraint structure;

[0069] The split-type constraint structure includes a pair of spaced-apart retaining bars 55, the free end wall of which is an inclined surface for contacting the stator bearing assembly.

[0070] Specifically, the bottom of the measuring platform 1 is connected to a third linear drive module, and the measuring platform 1 can move between positions that are vertically opposite to and offset from the rotating head 21 by the drive of the third linear drive module;

[0071] The third linear module includes a third cylinder 12, a third sliding member 13, and a third guide rail 14;

[0072] The third sliding member 13 is slidably assembled on the third guide rail 14, the actuating end of the third cylinder 12 is fixedly connected to the third sliding member 13, and the bottom of the measuring platform 1 is fixedly connected to the third sliding member 13.

[0073] Specifically, it also includes a first elastic telescopic member 15 and a first positioning frame 16;

[0074] The first elastic telescopic member 15 is disposed on the third sliding member 13, and the first positioning frame 16 is fixed to the end of the third guide rail 14 and is opposite to the first elastic telescopic member 15.

[0075] The first telescopic member can move between positions that elastically abut against and move away from the first positioning frame 16 as the third sliding member 13 moves. When the first elastic telescopic member 15 cooperates with the first positioning frame 16, it restricts the displacement of the fourth sliding member 25, preventing excessive displacement of the fourth sliding member 25.

[0076] Specifically, the vertical movement mechanism includes a fourth cylinder 24, a fourth sliding member 25, and a fourth guide rail 26, and the outer wall of the rotary power unit is fixedly connected to the fourth sliding member 25;

[0077] It is also provided with a vertically extending support 27, which is fixed to one side of the measuring table 1;

[0078] The fourth guide rail 26 is fixedly mounted on the upright frame 27, and the fourth sliding member 25 is slidably engaged with the fourth guide rail 26.

[0079] The fourth cylinder 24 is vertically fixed to the top of the stand 27, and the actuating end of the fourth cylinder 24 faces directly downward and is fixedly connected to the top wall of the fourth sliding member 25.

[0080] Specifically, the fourth sliding member 25 is provided with a second positioning frame 29, and the upright frame 27 is provided with a second elastic telescopic member 28. The second positioning frame 29 can move between positions that elastically abut against and move away from the second elastic telescopic member 28 as the fourth sliding member 25 moves.

[0081] 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 stator bearing assembly is on the measuring platform 1.

[0082] This utility model's technical solution, through its unique structure of integrating a rotary power unit with a push rod to drive the stator connecting feet, combined with a three-point indexing measurement algorithm of the opposing clamping measurement unit, completely overturns the traditional manual inspection mode. It significantly shortens inspection time, improves measurement efficiency, and directly matches the pace of high-speed production lines. The opposing clamping measurement unit boasts high measurement repeatability and accuracy, precisely capturing micron-level clearance changes. The equipment utilizes the stator housing's native connecting feet as drive fulcrums, eliminating the need for dedicated rotary fixtures, thus reducing manufacturing costs. Furthermore, its maintenance-free design minimizes downtime losses, providing a highly reliable, low-cost, and fully automated quality assurance foundation for intelligent motor manufacturing.

[0083] 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 bearing clearance measuring mechanism characterized by, It includes: a measuring table (1) for placing a stator bearing assembly; a rotary power unit provided above the measuring table (1) and comprising a vertical moving mechanism and a rotary head (21) provided with a clamping portion (22) at the lower end for fixing the inner ring of the bearing; a push rod (3) with the upper end fixedly connected to the bottom wall of the rotary head (21) and the lower end hanging and extending in a direction parallel to the rotary axis of the rotary head (21); a clamping and measuring unit comprising horizontally symmetrically arranged gap sensors (4) and stator clamping devices (5), which are synchronously moved towards each other by first and second linear drive modules to clamp or release the stator bearing assembly; a control unit for signal connection with the rotary power unit and the clamping and measuring unit; When the rotary head (21) rotates, the push rod (3) can contact the connecting foot (100) of the stator and drive the stator to rotate by indexing.

2. The bearing gap measuring mechanism according to claim 1, characterized in that: the rotary power unit comprises a rotary motor (23), and the rotary head (21) is rotated by the rotary motor (23).

3. The bearing gap measuring mechanism according to claim 1, characterized in that: the measuring table (1) is fixed with a vertically extending positioning needle (11); when the stator bearing assembly is placed on the measuring table (1), the inner ring of the bearing is movably sleeved on the positioning needle (11).

4. The bearing gap measuring mechanism according to claim 3, characterized in that: the measuring head of the gap sensor (4) is a flexible floating structure and is internally provided with a displacement sensor.

5. The bearing gap measuring mechanism according to claim 1, characterized in that: the first linear drive module comprises a first bracket (41), a first cylinder (42), a first sliding member (43) and a first guide rail (44); the first bracket (41) is fixedly arranged, the first guide rail (44) is fixed to the first bracket (41), the first sliding member (43) is slidingly assembled on the first guide rail (44), and the cylinder body of the first cylinder (42) is fixed to the first bracket (41), and the execution end of the first cylinder (42) is fixedly connected with the first sliding member (43); the gap sensor (4) is assembled on the first sliding member (43).

6. The bearing gap measuring mechanism according to claim 1, characterized in that: the second linear drive module comprises a second bracket (51), a second cylinder (52), a second sliding member (53) and a second guide rail (54); the second bracket (51) is fixedly arranged, the second guide rail (54) is fixed to the second bracket (51), the second sliding member (53) is slidingly assembled on the second guide rail (54), and the cylinder body of the second cylinder (52) is fixed to the second bracket (51), and the execution end of the second cylinder (52) is fixedly connected with the second sliding member (53). The stator holder (5) is assembled on the second sliding member (53).

7. The bearing clearance measuring mechanism as described in claim 1, characterized in that: The stator positioning device (5) has a split constraint structure at its execution end; The split constraint structure includes a pair of spaced-apart clips (55), the free end wall of which is an inclined surface for contacting the stator bearing assembly.

8. The bearing clearance measuring mechanism as described in claim 1, characterized in that: The bottom of the measuring platform (1) is connected to a third linear drive module, and the measuring platform (1) can move between positions that are opposite to and offset from the rotating head (21) by the drive of the third linear drive module; The third linear drive module includes a third cylinder (12), a third slider (13), and a third guide rail (14). The third sliding member (13) is slidably mounted on the third guide rail (14), the actuating end of the third cylinder (12) is fixedly connected to the third sliding member (13), and the bottom of the measuring platform (1) is fixedly connected to the third sliding member (13).

9. The bearing clearance measuring mechanism as described in claim 8, characterized in that: It is also provided with a first elastic telescopic component (15) and a first positioning frame (16); The first elastic telescopic member (15) is disposed on the third sliding member (13), and the first positioning frame (16) is fixed to the end of the third guide rail (14) and is opposite to the first elastic telescopic member (15); The first telescopic member can move between positions that elastically abut against and move away from the first positioning frame (16) as the third sliding member (13) moves.

10. The bearing clearance measuring mechanism as described in claim 1, characterized in that: The vertical movement mechanism includes a fourth cylinder (24), a fourth sliding member (25), and a fourth guide rail (26), and the outer wall of the rotary power unit is fixedly connected to the fourth sliding member (25); It is also provided with a vertically extending support (27), which is fixed to one side of the measuring table (1); The fourth guide rail (26) is fixedly mounted on the upright frame (27), and the fourth sliding member (25) is slidably engaged with the fourth guide rail (26); The fourth cylinder (24) is vertically fixed to the top of the stand (27), and the actuating end of the fourth cylinder (24) faces directly downward and is fixedly connected to the top wall of the fourth sliding member (25).

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