Automatic centering system for motor test benches

Abstract

The objective is to provide an automatic centering system for a motor test bench that adjusts the orientation of the motor under test to center the shaft. [Solution] The system includes a host computer, a movable base, a first laser sensing set, and a second laser sensing set. The movable base includes a clamping device and a multi-axis movable table. The clamping device is positioned on the multi-axis movable table and is used to removably clamp the motor under test. The laser sensing set is positioned on the reference plane of the front end support of the motor test bench and detects the position of the shaft in the horizontal or vertical plane at the detection position. It acquires first and second displacement information of the shaft, respectively, and provides the host computer with the ability to control the multi-axis movable table to center the shaft. This enables automatic centering and allows for operation on a production line.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motor test benches, and particularly to an automatic centering system for motor test benches.

Background Art

[0002] For the power test of a motor, the tested motor is clamped on a front support stand, and the shaft of the tested motor is connected to the connecting shaft of the motor test bench through the opening of the front support stand, and the motor test bench is made to execute the test procedure.

[0003] Under high rotational speed test conditions, the centering between the shaft of the tested motor and the connecting shaft becomes very important. Even if the coupling can increase the connection tolerance between the shaft and the connecting shaft, based on the high rotational speed test conditions, the requirement for the centering accuracy between the shaft and the connecting shaft is becoming increasingly high. The higher the centering accuracy, the more phenomena such as vibration and noise can be reduced, which not only affects the life of the motor test bench, but also causes damage to the shaft of the tested motor as a transmission shaft.

[0004] Conventionally, in order to achieve high-precision centering work, the installer needs to accurately clamp the tested motor on the front support stand and achieve accurate centering between the shaft and the connecting shaft. However, it took a considerable amount of time for installation.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In some embodiments of the present disclosure, when an operator performs centering, the problem of requiring a long working time is solved.

[0006] In some embodiments of the present disclosure, the configuration and arrangement of the components of the automatic centering system are provided so that the automatic centering system can provide accurate and efficient centering work.

Means for Solving the Problems

[0007] According to several embodiments, an automatic centering system for a motor test bench is provided to adjust the orientation of the motor under test to center the shaft, allowing the motor test bench to perform test procedures after a connecting shaft extending along the first axis is connected to the shaft. The automatic centering system includes a host computer, a movable base, a first laser sensing set, and a second laser sensing set. The movable base includes a clamping device and a multi-axis movable table, the clamping device being positioned on the multi-axis movable table and used to removably clamp the motor under test. The first laser sensing set is positioned on a reference plane of the front end support of the motor test bench and detects the position of the shaft in the horizontal plane at the detection position, thereby acquiring first displacement information of the shaft on the horizontal plane on a horizontal axis perpendicular to the first axis. The second laser sensing set is positioned on the reference plane and detects the position of the shaft in the vertical plane, thereby acquiring second displacement information of the shaft on the vertical plane on a vertical axis perpendicular to the horizontal axis. The host computer is used to control the multi-axis movable table based on the first and second misalignment information, thereby centering the shaft.

[0008] According to some embodiments, the first sensing region of the first laser sensing group can be defined on a horizontal plane, and when the shaft is in the detection position, the side edges of the shaft define a first front identification point, a second front identification point, a first rear identification point, and a second rear identification point within the first sensing region on the horizontal plane. The line connecting the first front identification point and the second front identification point is parallel to the horizontal axis. The line connecting the first rear identification point and the second rear identification point is parallel to the horizontal axis. The line connecting the first front identification point and the first rear identification point is parallel to the first axis. The second sensing region of the second laser sensing group can be defined on a vertical plane, and when the shaft is in the detection position, the side edges of the shaft define a third front identification point, a fourth front identification point, a third rear identification point, and a fourth rear identification point within the second sensing region on the vertical plane. The line connecting the third front identification point and the fourth front identification point is parallel to the vertical axis. The line connecting the third rear identification point and the fourth rear identification point is parallel to the vertical axis. The line connecting the third pre-identification point and the third post-identification point is parallel to the first axis.

[0009] According to some embodiments, the first misalignment information may include first and second horizontal misalignment amounts. The first horizontal misalignment amount refers to the degree of difference between two distances: the distance between a first front identification point and a first front reference point in the first sensing area, and the distance between a second front identification point and a second front reference point in the first sensing area. The second horizontal misalignment amount refers to the difference between the distance between a first rear identification point and a first rear reference point in the first sensing area, and the distance between a second rear identification point and a second rear reference point in the first sensing area. When the shaft is in the centered position, both the first and second horizontal misalignment amounts may be below a threshold.

[0010] According to some embodiments, the second misalignment information includes first and second vertical misalignment amounts. The first vertical misalignment amount refers to the degree of difference between two distances: the distance between the third front identification point and the third front reference point in the second sensing area, and the distance between the fourth front identification point and the fourth front reference point in the second sensing area. The second vertical misalignment amount refers to the difference between the distance between the third rear identification point and the third rear reference point in the second sensing area, and the distance between the fourth rear identification point and the fourth rear reference point in the second sensing area. When the shaft is in the centered position, both the first and second vertical misalignment amounts may be below a threshold.

[0011] According to some embodiments, the first front reference point, the first rear reference point, the second front reference point, and the second rear reference point may all be located on the edge of the first sensing region. The third front reference point, the third rear reference point, the fourth front reference point, and the fourth rear reference point may be located on the edge of the second sensing region.

[0012] According to some embodiments, the first laser sensing set may include first and second horizontal reference objects that project from the reference plane and are at least partially located within the first sensing region, such that associated reference points can be defined on the collimation edges of the first or second horizontal reference object within the first sensing region, respectively. The second laser sensing set may include first and second vertical reference objects that project from the reference plane and are at least partially located within the second sensing region, such that associated reference points can be defined on the collimation edges of the first or second vertical reference object within the second sensing region, respectively.

[0013] According to some embodiments, a multi-axis movable table may include a first axis moving device, a horizontal axis moving device, a vertical axis moving device, a first rotation device, and a second rotation device. The first rotation device rotates on the vertical axis, and the second rotation device rotates on the horizontal axis. The host computer may be operated to obtain a vertical axis angular deviation based on the distance between a first front identification point and a first front reference point and the distance between a first rear identification point and a first rear reference point, and to control the first rotation device accordingly. The host computer may be operated to obtain a horizontal axis angular deviation based on the distance between a third front identification point and a third front reference point and the distance between a third rear identification point and a third rear reference point, and to control the second rotation device accordingly.

[0014] According to some embodiments, when a host computer is used to perform an automatic centering procedure, it can perform the initial step, the misalignment information acquisition step, the angle determination step, the misalignment determination step, the angle adjustment step, the misalignment adjustment step, and the centering completion step in order or according to conditions. [Effects of the Invention]

[0015] Therefore, by positioning the first and second laser sensing units and operating the front end support frame of the existing motor test bench, the shaft condition of the motor under test can be effectively detected, automatic alignment can be achieved under the control of the movable base, and further automation of alignment can be achieved by providing it to the production line. At the same time, the problem of vibration due to deviation between the two axes can be solved, and the lifespan of the motor test bench can be further extended. [Brief explanation of the drawing]

[0016] [Figure 1] This is a three-dimensional view of a motor test bench equipped with an automatic centering system according to several embodiments. [Figure 2] Figure 1 is a schematic front view of the support structure according to the embodiment. [Figure 3] This is a schematic diagram of the detection field of view of an automatic centering system on a horizontal plane according to several embodiments. [Figure 4] This is a schematic diagram of the detection field of view of an automatic centering system on a vertical plane according to several embodiments. [Figure 5] This is a schematic diagram of the detection field of view of an automatic centering system on a horizontal plane according to another embodiment. [Figure 6] This is a flowchart illustrating how an automated centering system, according to several embodiments, performs a centering procedure. [Modes for carrying out the invention]

[0017] To ensure a thorough understanding of the purpose, features, and effects of this invention, the present invention will be described in detail below, combining specific examples with the accompanying drawings.

[0018] As used herein, the terms “one” or “one” are used to describe units, components, structures, devices, modules, systems, parts, or regions, etc. This is for illustrative purposes only and is done to give a general meaning to the scope of the invention. Therefore, unless the context clearly indicates otherwise, such descriptions should be understood to include one or at least one, and the singular form also includes the plural.

[0019] As used herein, the terms “includes,” “equipment,” “possess,” or other similar terms include, but are not limited to, those elements listed herein, and may include other elements that are not expressly described but are generally specific to a unit, component, structure, device, module, system, part, or area.

[0020] As used herein, similar ordinal terms such as "first" or "second" are used to distinguish or refer to the same or similar elements or structures, parts or regions, and do not necessarily imply the spatial order of these elements, structures, parts or regions. It should be understood that in some cases or configurations, the ordinal terms can be used interchangeably without affecting the implementation of the present invention.

[0021] Referring to FIG. 1, it is a perspective view of a motor test bench equipped with an automatic centering system according to some embodiments. The motor test bench 200 includes a connecting shaft 210 extending along a first axis X and a front pedestal 220 disposed at the front end. The connecting shaft 210 is used to connect to the shaft 110 of the test motor 100, for example, through a coupling. The front pedestal 220 includes an opening 221 and a reference plane S1. The opening 221 is usually configured such that the center line C of the connecting shaft 210 passes through the center of the opening 221 and becomes the normal vector of the reference plane S1.

[0022] The automatic centering system of the motor test bench 200 includes a host computer 300, a movable base portion 400, a first laser sensing set 510, and a second laser sensing set 520. The movable base portion 400 includes a clamping device 410 and a multi-axis movable table 420. The clamping device 410 can be constituted by a device that can be quickly removed, such as a fastener or an elastic clip. The host computer 300 can usually appropriately control the motor test bench 200, the movable base portion 400, the first laser sensing set 510, and the second laser sensing set 520 through a wired and / or wireless connection (not shown), and / or receive corresponding data information.

[0023] In some test environments, usually, the test motor 100 is clamped on the reference plane S1, the shaft 110 of the test motor 100 is aligned with the center line C, and after connecting with the connecting shaft 210, the host computer 300 controls the motor test bench 200 to execute the test procedure. In some embodiments of the present invention, the test motor 100 is not clamped on the reference plane S1 of the front-end stand 220, but is fixed on the movable base portion 400 via the clamping device 410. The host computer 300 obtains the first deviation information and the second deviation information of the shaft 110 via the first laser sensing set 510 and the second laser sensing set 520 respectively, and controls the multi-axis movable table 420 of the movable base portion 400 based on these information to eliminate the degree of deviation or displacement, and realize automatic centering.

[0024] Referring to FIGS. 1 and 2 simultaneously, FIG. 2 is a schematic front view of the stand according to the embodiment of FIG. 1. The first laser sensing set 510 is arranged on the reference plane S1 of the front-end stand 220, clamped on the multi-axis movable table 420, and detects the position of the shaft 110 of the test motor 100 on the horizontal plane at the detection position. The laser sensing sets (510, 520) have a laser light emission side (510a, 520a) and a laser light reception side (510b, 520b), and the emission side and the reception side can be interchanged. Due to the characteristics of laser collimation, the blocked part of the laser light is displayed on the reception screen of the reception side, and the degree of deviation or displacement can be accurately estimated based on this screen. The detection position means that the shaft 110 of the test motor 100 is within the detection ranges of the first laser sensing set 510 and the second laser sensing set 520.

[0025] As shown in FIG. 2, the first laser sensing set 510 may include a first horizontal reference object 511 and a second horizontal reference object 512 protruding from the reference plane S1. The second laser sensing set 520 may include a first vertical reference object 521 and a second vertical reference object 522 protruding from the reference plane S1. In other embodiments, these protruding reference objects may be omitted, but these protruding reference objects can further improve the accuracy and reliability.

[0026] Generally speaking, the first laser sensing unit 510 detects the position of the shaft 110 on a horizontal plane, where this horizontal plane lies on the horizontal axis Y, which is perpendicular to the first axis X, and such an arrangement can be used to acquire first displacement information of the shaft 110. The second laser sensing unit 520 detects the position of the shaft 110 on a vertical plane, where this vertical plane lies on the vertical axis Z, which is perpendicular to the first axis X, and such an arrangement can be used to acquire second displacement information of the shaft 110.

[0027] Next, referring to Figures 1 and 3 simultaneously, Figure 3 is a schematic diagram of the detection field of view of an automatic centering system on a horizontal plane according to several embodiments. The first sensing region SHR of the first laser sensing unit 510 is defined on the horizontal plane. When the shaft 110 of the motor under test 100 is in the detection position, the side edges of the shaft 110 can define a first front identification point y1f, a second front identification point y2f, a first rear identification point y1b, and a second rear identification point y2b on the horizontal plane within the first sensing region SHR. The detection range of the first sensing region SHR can be confirmed on the receiving screen displayed on the receiving side. Within this detection range, the first horizontal reference object 511 and the second horizontal reference object 512 obstruct the laser beam and appear as shadows on the receiving screen, and the shaft 110, which is within the detection range, also obstructs the laser beam and appears as a shadow on the receiving screen. Therefore, various information can be obtained through this state. Figure 3 shows that the line connecting the first front identification point y1f and the second front identification point y2f is parallel to the horizontal axis Y, the line connecting the first rear identification point y1b and the second rear identification point y2b is parallel to the horizontal axis Y, and the line connecting the first front identification point y1f and the first rear identification point y1b is parallel to the first axis X.

[0028] The first displacement information includes the first horizontal displacement and the second horizontal displacement. The first horizontal displacement refers to the degree of difference between two distances (YF1, YF2): the distance YF1 between the first previous identification point y1f and the first previous reference point y1fr, and the distance YF2 between the second previous identification point y2f and the second previous reference point y2fr. If the difference between these two distances (YF1, YF2) is zero or less than a set threshold, it indicates that the degree of displacement of the shaft 110 in terms of the first horizontal displacement meets the requirements and no adjustment is necessary. Conversely, if the difference between these two distances (YF1, YF2) is zero or less than a set threshold, adjustment is necessary.

[0029] The second horizontal displacement refers to the degree of difference between two distances (YB1, YB2): the distance YB1 between the first rear identification point y1b and the first rear reference point y1br, and the distance YB2 between the second rear identification point y2b and the second rear reference point y2br. If the difference between these two distances (YB1, YB2) is zero or less than the set threshold, it indicates that the degree of displacement of the shaft 110 in terms of the second horizontal displacement meets the requirements and no adjustment is necessary. Conversely, if the difference between these two distances (YB1, YB2) is zero or less than the set threshold, adjustment is necessary.

[0030] If both the first and second horizontal displacement amounts are not zero, or if both are not below a set threshold, the host computer 300 can be notified that the shaft 110 has an inclination angle on the plane of the horizontal axis Y (horizontal plane) and that it should be rotated on the vertical axis Z to eliminate the inclination angle.

[0031] Next, referring to Figures 1 and 4, Figure 4 is a schematic diagram of the detection field of view of an automatic centering system on a vertical plane according to several embodiments. The second sensing region SVR of the second laser sensing unit 520 is defined on the vertical plane. When the shaft 110 of the motor under test 100 is in the detection position, the side edges of the shaft 110 can define a third front identification point z3f, a fourth front identification point z4f, a third rear identification point z3b, and a fourth rear identification point z4b on the vertical plane within the second sensing region SVR. The detection range of the second sensing region SVR can be confirmed on the receiving screen displayed on the receiving side. Within this detection range, the first vertical reference object 521 and the second vertical reference object 522 obstruct the laser beam and appear as shadows on the receiving screen, and the shaft 110, which is within the detection range, also obstructs the laser beam and appears as a shadow on the receiving screen. Therefore, various information can be obtained through this state. Figure 4 shows that the line connecting the third front identification point z3f and the fourth front identification point z4f is parallel to the vertical axis Z, the line connecting the third rear identification point z3b and the fourth rear identification point z4b is parallel to the vertical axis Z, and the line connecting the third front identification point z3f and the third rear identification point z3b is parallel to the first axis X.

[0032] The second misalignment information includes the first vertical misalignment and the second vertical misalignment. The first vertical misalignment refers to the degree of difference between two distances (ZF3, ZF4): the distance ZF3 between the third prior identification point z3f and the third prior reference point z3fr, and the distance ZF4 between the fourth prior identification point z4f and the fourth prior reference point z4fr. If the difference between these two distances (ZF3, ZF4) is zero or less than the set threshold, it indicates that the degree of misalignment on the first vertical misalignment of the shaft 110 meets the requirements and no adjustment is necessary. Conversely, if the difference between these two distances (ZF3, ZF4) is zero or less than the set threshold, adjustment is necessary.

[0033] The second vertical displacement refers to the degree of difference between two distances (ZB3, ZB4): the distance ZB3 between the third rear identification point z3b and the third rear reference point z3br, and the distance ZB4 between the fourth rear identification point z4b and the fourth rear reference point z4br. If the difference between these two distances (ZB3, ZB4) is zero or less than the set threshold, it indicates that the degree of displacement of the shaft 110 in terms of the second vertical displacement meets the requirements and no adjustment is necessary. Conversely, if the difference between these two distances (ZB3, ZB4) is zero or less than the set threshold, adjustment is necessary.

[0034] If both the first and second vertical displacement amounts are not zero, or both are not below a set threshold, the host computer 300 can be notified that the shaft 110 has an inclination angle on the plane of the vertical axis Z (vertical plane) and that it should be rotated on the horizontal axis Y to eliminate the inclination angle.

[0035] The angle of inclination on the plane of the horizontal axis Y (horizontal plane) or the plane of the vertical axis Z (vertical plane) can both be estimated based on the aforementioned distance information, for example, by calculations based on trigonometric functions or other methods, and a detailed explanation of these methods is omitted here.

[0036] As shown in Figure 3, each reference point (y1fr, y1br, y2fr, y2br) is defined on the collimation edge of the corresponding first horizontal reference object 511 or second horizontal reference object 512 in the first sensing region SHR. As shown in Figure 4, each reference point (z3fr, z3br, z4fr, z4br) is defined on the collimation edge of the corresponding first vertical reference object 521 or second vertical reference object 522 in the second sensing region SVR.

[0037] Next, referring to Figure 5, is a schematic diagram of the detection field of view of an automatic centering system on a horizontal plane according to another embodiment. In this embodiment, instead of using each protruding reference object, the edges of the sensing area of ​​the laser sensing set (e.g., actual boundary or virtual boundary) are used directly. As shown in Figure 5, each reference point (y1fr, y1br, y2fr, y2br) is defined on the edge (actual boundary) of the sensing area itself of the first sensing area SHR, and similarly (not shown), each reference point (z3fr, z3br, z4fr, z4br) may be defined on the edge of the sensing area itself of the second sensing area SVR. In other embodiments, a virtual boundary is provided within the sensing area, and the host computer 300 performs the corresponding calculation.

[0038] The multi-axis movable table is configured to give the motor under test 100 the ability to adjust in various directions. For example, the multi-axis movable table may include a first axis moving device (moving in the axial direction of the first axis X), a horizontal axis moving device (moving in the axial direction of the horizontal axis Y), a vertical axis moving device (moving in the axial direction of the vertical axis Z), a first rotation device (rotating around the vertical axis Z as the axis of rotation), and a second rotation device (rotating around the horizontal axis Y as the axis of rotation).

[0039] If both the first horizontal displacement and the second horizontal displacement are not zero or both are not below a set threshold, the host computer 300 can obtain a vertical axis angular deviation (e.g., tilt angle) based on the distance YF1 between the first front identification point y1f and the first front reference point y1fr, and the distance YB1 between the first rear identification point y1b and the first rear reference point y1br, and control the first rotating device to rotate on the vertical axis Z to eliminate this tilt angle. Similarly, if both the first vertical displacement and the second vertical displacement are not zero or both are not below a set threshold, the host computer 300 can obtain a horizontal axis angular deviation (e.g., tilt angle) based on the distance ZF3 between the third front identification point z3f and the third front reference point z3fr, and the distance ZB3 between the third rear identification point z3b and the third rear reference point z3br, and control the second rotating device to rotate on the horizontal axis Y to eliminate this tilt angle.

[0040] Next, referring to Figures 1 and 6 simultaneously, Figure 6 is a flowchart showing how an automatic centering system, according to several embodiments, performs a centering procedure. When the host computer performs the automatic centering procedure, the following actions can be performed in order to achieve accurate and efficient control operations.

[0041] Initial step S1: The host computer 300 controls the first axis moving device to position the shaft 110 of the motor under test 100 at the detection position.

[0042] Step S2 for acquiring displacement information: The host computer 300 acquires first displacement information and vertical axis angular deviation of the shaft 110 via the first laser sensing set 510, and second displacement information and horizontal axis angular deviation of the shaft 110 via the second laser sensing set 520.

[0043] Angle determination step S3: If the vertical axis angle deviation and the horizontal axis angle deviation are less than or equal to a preset angle value, the host computer 300 proceeds to the deviation determination step S4-1; otherwise, it proceeds to the angle adjustment step S4-2.

[0044] Misalignment determination step S4-1: The host computer 300 performs misalignment determination. If both the first misalignment information and the second misalignment information are below the threshold, it proceeds to the alignment completion step S5-2. Otherwise, it proceeds to the misalignment adjustment step S5-1.

[0045] Angle adjustment step S4-2: The host computer 300 controls the first rotating device based on the vertical axis angle deviation and the second rotating device based on the horizontal axis angle deviation to reduce the deviation, and then returns to the deviation information acquisition step S2.

[0046] Misalignment adjustment step S5-1: The host computer 300 controls the horizontal axis moving device based on the first misalignment information and the vertical axis moving device based on the second misalignment information to reduce the amount of misalignment, and then returns to the misalignment information acquisition step S2.

[0047] Alignment completion step S5-2: The host computer 300 controls the first axis moving device to move the motor under test 100 toward the motor test bench 200 and connect the shaft 110 and the connecting shaft 210.

[0048] Afterward, various motor test items are performed on the motor test bench 200.

[0049] In short, automatic alignment can be completed accurately and efficiently based on the definition of first and second laser sensing sets and various reference points and identification points, making it suitable for mass production lines and further extending the lifespan of the motor test bench after significantly reducing the deviation between the two axes.

[0050] Although the present invention has disclosed best embodiments above, as those skilled in the art will understand, these embodiments are used solely for illustrative purposes and should not be understood as limiting the scope of the invention. It should be noted that all modifications and substitutions having equivalent effects to those in these embodiments are included within the scope of the invention. Therefore, the scope of protection of the present invention is as defined in the claims. [Explanation of symbols]

[0051] 100 Motor under test 110 shaft 200 motor test bench 210 Connecting shaft 220 Front end support frame 221 Opening 300 host computers 400 Movable base section 410 Clamping device 420 Multi-axis movable table 510 First Laser Sensing Group 510a Laser beam emission side 510b Laser beam receiver 511 1st horizontal reference object 512 Second horizontal reference object 520 Second Laser Sensing Group 520a Laser beam emission side 520b Laser beam receiver 521 1st vertical reference object 522 Second vertical reference object C center line S1 reference plane SHR First Sensing Domain SVR Second Sensing Domain y1f First pre-identification point y1fr First previous reference point y1b 1st post-discrimination point y1br 1st posterior reference point y2f Second pre-identification point y2fr 2nd previous reference point y2b 2nd post-discrimination point y2br 2nd posterior reference point YB1 distance YB2 distance YF1 distance YF2 distance z3f Third pre-identification point z3fr 3rd front reference point z3b 3rd post-discrimination point z3br 3rd posterior reference point z4f Fourth pre-identification point z4fr 4th previous reference point z4b 4th post-discrimination point z4br 4th posterior reference point ZB3 distance ZB4 distance ZF3 distance ZF4 distance X 1st axis Y horizontal axis Z vertical axis

Claims

1. An automatic centering system for a motor test bench, which adjusts the posture of the motor under test to center the shaft, and enables the motor test bench to perform the test procedure after the connecting shaft extending along the first axis is connected to the shaft, The host computer and A movable base unit comprising a clamping device positioned on a multi-axis movable table for detachably clamping the motor under test, and a multi-axis movable table, A first laser sensing unit is positioned on the reference plane of the front end support frame of the motor test bench and detects the position of the shaft on the horizontal plane at the detection position, thereby acquiring first displacement information of the shaft on the horizontal plane on the horizontal axis perpendicular to the first axis. The system includes a second laser sensing unit positioned on the reference plane, which detects the position of the shaft on the vertical plane and acquires second displacement information of the shaft on the vertical plane on the vertical axis perpendicular to the horizontal axis, The host computer is used to control the multi-axis movable table based on the first and second misalignment information to center the shaft. Automatic centering system.

2. The first sensing region of the first laser sensing group is defined on the horizontal plane, and at the detection position, the side edge of the shaft defines a first front identification point, a second front identification point, a first rear identification point, and a second rear identification point on the horizontal plane within the first sensing region, the line connecting the first front identification point and the second front identification point is parallel to the horizontal axis, the line connecting the first rear identification point and the second rear identification point is parallel to the horizontal axis, and the line connecting the first front identification point and the first rear identification point is parallel to the first axis, and the second laser sensing The automatic centering system according to claim 1, wherein the second sensing region of the centering group is defined on the vertical plane, and at the detection position, the side edge of the shaft defines a third front identification point, a fourth front identification point, a third rear identification point, and a fourth rear identification point on the vertical plane that are within the second sensing region, the line connecting the third front identification point and the fourth front identification point is parallel to the vertical axis, the line connecting the third rear identification point and the fourth rear identification point is parallel to the vertical axis, and the line connecting the third front identification point and the third rear identification point is parallel to the first axis.

3. The automatic centering system according to claim 2, wherein the first misalignment information includes first and second horizontal misalignment amounts, the first horizontal misalignment amount being the degree of difference between two distances: the distance between the first front identification point and the first front reference point in the first sensing area, and the distance between the second front identification point and the second front reference point in the first sensing area, the second horizontal misalignment amount being the difference between the distance between the first rear identification point and the first rear reference point in the first sensing area, and the distance between the second rear identification point and the second rear reference point in the first sensing area, and when the shaft is in the centering position, both the first and second horizontal misalignment amounts are below a threshold.

4. The automatic centering system according to claim 3, wherein the second misalignment information includes first and second vertical misalignment amounts, the first vertical misalignment amount being the degree of difference between two distances: the distance between the third front identification point and the third front reference point in the second sensing area, and the distance between the fourth front identification point and the fourth front reference point in the second sensing area, the second vertical misalignment amount being the difference between the distance between the third rear identification point and the third rear reference point in the second sensing area, and the distance between the fourth rear identification point and the fourth rear reference point in the second sensing area, and when the shaft is in the centering position, both the first and second vertical misalignment amounts are below a threshold.

5. The automatic centering system according to claim 4, wherein the first front reference point, the first rear reference point, the second front reference point, and the second rear reference point are all located on the edge of the first sensing region, and the third front reference point, the third rear reference point, the fourth front reference point, and the fourth rear reference point are located on the edge of the second sensing region.

6. The automatic centering system according to claim 4, wherein the first laser sensing set includes first and second horizontal reference objects projecting from the reference plane and at least partially located within the first sensing area, the first front reference point and the first rear reference point are defined on the collimation edge of the first horizontal reference object within the first sensing area, the second front reference point and the second rear reference point are defined on the collimation edge of the second horizontal reference object within the first sensing area, the second laser sensing set includes first and second vertical reference objects projecting from the reference plane and at least partially located within the second sensing area, the third front reference point and the third rear reference point are defined on the collimation edge of the first vertical reference object within the second sensing area, and the fourth front reference point and the fourth rear reference point are defined on the collimation edge of the second vertical reference object within the second sensing area.

7. The automatic centering system according to claim 5 or 6, wherein the multi-axis movable table includes a first axis moving device, a horizontal axis moving device, a vertical axis moving device, a first rotation device, and a second rotation device, wherein the first rotation device rotates on the vertical axis, the second rotation device rotates on the horizontal axis, the host computer acquires a vertical axis angular deviation amount based on the distance between the first front identification point and the first front reference point and the distance between the first rear identification point and the first rear reference point, and controls the first rotation device accordingly, and the host computer acquires a horizontal axis angular deviation amount based on the distance between the third front identification point and the third front reference point and the distance between the third rear identification point and the third rear reference point, and controls the second rotation device accordingly.

8. An automatic centering system according to claim 7, When the host computer is used to perform an automated centering procedure, it is configured to perform the following actions in sequence, and these actions are: An initial step of controlling the first axis moving device to move the shaft of the motor under test to the detection position, A displacement information acquisition step involves acquiring the first displacement information and the vertical axis angle deviation amount of the shaft via the first laser sensing set, and acquiring the second displacement information and the horizontal axis angle deviation amount of the shaft via the second laser sensing set. An angle determination step where, if the vertical axis angle deviation and the horizontal axis angle deviation are less than or equal to a preset angle value, the process proceeds to the deviation determination step; otherwise, the process proceeds to the angle adjustment step. If both the first misalignment information and the second misalignment information are below the threshold, the misalignment determination step proceeds to the alignment completion step; otherwise, the misalignment determination step proceeds to the misalignment adjustment step. The angle adjustment step involves controlling the first rotating device based on the vertical axis angle deviation, controlling the second rotating device based on the horizontal axis angle deviation to reduce the deviation, and returning to the deviation information acquisition step. The misalignment adjustment step involves controlling the horizontal axis movement device based on the first misalignment information, controlling the vertical axis movement device based on the second misalignment information to reduce the amount of misalignment, and returning to the misalignment information acquisition step, and The alignment completion step involves controlling the first axis moving device to move the motor under test toward the motor test bench, and connecting the shaft and the connecting shaft. An automated centering system, including [a specific feature].

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