Universal single-output shaft motor axial gap precision detection device

Abstract

The present application relates to the technical fields of micro motor performance debugging and testing, and discloses a universal single-output-shaft motor axial gap precision detection device, which comprises a clamping and positioning assembly, a clamping and testing assembly, a left displacement monitoring assembly and a right displacement monitoring assembly integrated on a base, the clamping and testing assembly and the left displacement monitoring assembly are located on one side of the clamping and positioning assembly, and the right displacement monitoring assembly is located on the other side of the clamping and positioning assembly; the clamping and testing assembly and the clamping and positioning assembly are horizontally arranged, and the left displacement monitoring assembly is located on one side of the clamping and testing assembly; the clamping and positioning assembly is used for supporting and compressing a test motor, and the clamping and testing assembly is used for clamping a shaft of the test motor and applying an axial test force to the shaft. The present application realizes single-output-shaft motor axial gap precision detection, provides data support for motor performance debugging and testing, ensures the consistency of the axial gap of the motor, and further guarantees the motor performance.

Description

Technical Field

[0001] This invention relates to the field of performance debugging and testing technology for micro-motors. Background Technology

[0002] Axial clearance in micro motors is a crucial indicator of motor quality, significantly impacting operational performance and lifespan. As a major category of motors, single-shaft motors require accurate axial clearance measurement and appropriate adjustment during assembly to ensure optimal performance.

[0003] Traditional axial clearance testing mainly relies on manual operation using dial indicators. This process involves many uncertainties, such as unstable clamping and uncontrollable testing force, resulting in low accuracy and unreliable results. Consequently, motors debugged using this method exhibit poor consistency and pose a risk to delivery quality. Summary of the Invention

[0004] The purpose of this invention is to provide a general-purpose precision detection device for axial clearance of single-output shaft motors, which is used for the precise detection of axial clearance values ​​of conventional single-output shaft motors. It solves the shortcomings of manual inspection, improves the accuracy of inspection, and effectively ensures the overall performance and delivery quality of the motor.

[0005] To address the aforementioned technical problems, this invention provides a universal precision detection device for the axial clearance of a single-output shaft motor. The device includes a clamping and positioning assembly, a clamping and testing assembly, a left displacement monitoring assembly, and a right displacement monitoring assembly integrated on a base. The clamping and testing assembly and the left displacement monitoring assembly are located on one side of the clamping and positioning assembly, while the right displacement monitoring assembly is located on the other side. The clamping and testing assembly is horizontally positioned relative to the clamping and positioning assembly, with the left displacement monitoring assembly located on one side of the clamping and testing assembly. The clamping and positioning assembly supports and presses the test motor, while the clamping and testing assembly clamps the shaft extension of the test motor and applies an axial testing force to it. The left displacement monitoring assembly monitors the axial displacement of the end face of the test motor shaft extension, and the right displacement monitoring assembly monitors the axial displacement of the end face of the test motor housing.

[0006] The clamping and positioning assembly includes a base plate fixed on the base, on which a first slide servo motor and a first linear module are mounted; the output end of the first slide servo motor is connected to a first mounting base, which moves the first mounting base vertically; a V-shaped bracket for supporting the test motor is connected to one side of the first mounting base; a positioning and clamping cylinder is provided on the slider of the first linear module, which adjusts the horizontal position of the positioning and clamping cylinder along the first linear module, and the piston rod of the positioning and clamping cylinder faces the V-shaped bracket, for pressing the test motor downward.

[0007] The clamping test assembly includes a second slide servo motor, a force testing cylinder, and a second linear slide mounted on a base. The output end of the second slide servo motor is connected to the first linear slide via a second linear module, driving the first linear slide to move along the axial direction of the test motor. A gripper cylinder is provided on the slider of the first linear slide, and the piston rod of the force testing cylinder is connected to the gripper cylinder. The slider of the second linear slide is connected to the gripper cylinder, guiding the gripper cylinder to move along the axial direction.

[0008] The clamping test assembly also includes a limiting cylinder mounted on the base, the piston rod of which can extend to limit the piston stroke of the force-applying test cylinder.

[0009] The left displacement monitoring component includes a second mounting base mounted on a base, and a third slide servo motor is mounted on the second mounting base; the output end of the third slide servo motor is connected to a mounting arm, and the mounting arm is driven by the third slide servo motor to move axially; a left displacement sensor is mounted on the mounting arm, and the probe of the left displacement sensor faces the clamping test component.

[0010] The right displacement monitoring component includes a fourth slide servo motor mounted on the base, the output end of which is connected to a cross slide, which is driven by the fourth slide servo motor to move axially; a right displacement sensor is provided on the cross slide, and the probe of the right displacement sensor faces the clamping and positioning component.

[0011] The piston rod end of the positioning and clamping cylinder is provided with a polyurethane clamping block, and the support surface of the V-shaped bracket is covered with a rubber coating.

[0012] The force testing cylinder is connected to a proportional valve to control the magnitude of the output test force.

[0013] The left displacement sensor is a contact-type high-precision displacement sensor.

[0014] The right displacement sensor is a contact-type high-precision displacement sensor.

[0015] Compared with the prior art, this invention enables precise detection of the axial clearance of a single-output shaft motor, providing data support for the overall performance debugging and testing of the motor, ensuring the consistency of the overall axial clearance, and thus guaranteeing the motor performance.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 A schematic diagram of the middle clamping and positioning assembly; Figure 3 yes Figure 1 A schematic diagram of the structure of the clamping test component; Figure 4 yes Figure 1 Schematic diagram of the left-middle displacement monitoring component; Figure 5 yes Figure 1 A schematic diagram of the right displacement monitoring component.

[0019] In the diagram: 1-base, 2-clamping and positioning assembly, 21-base plate, 22-V-shaped bracket, 23-positioning and clamping cylinder, 24-first slide servo motor, 25-first linear module, 26-first mounting base, 3-clamping and testing assembly, 31-second slide servo motor, 32-limit cylinder, 33-force testing cylinder, 34-second linear module, 35-gripper cylinder, 36-first linear slide, 37-second linear slide, 4-left displacement monitoring assembly, 41-third slide servo motor, 42-second mounting base, 43-mounting arm, 44-left displacement sensor, 5-right displacement monitoring assembly, 51-fourth slide servo motor, 52-cross slide, 53-right displacement sensor, 6-test motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments. The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this invention. The embodiments can be combined with and referenced by each other without contradiction.

[0021] like Figures 1-5 As shown, the components work together through mechanical transmission and control systems to achieve manual feeding, automatic clamping and pressing, force application, displacement monitoring, and test result generation. The following provides a detailed description of each component.

[0022] Overall structure (combined) Figure 1 ) The main body of the device is placed on the base 1, and the arrangement from left to right is as follows: left displacement monitoring component 4 → clamping test component 3 → clamping and positioning component 2 → right displacement monitoring component 5.

[0023] Each component is rigidly connected to the base 1 and works in coordination through the control system.

[0024] Clamping and positioning components (combined) Figure 2 ) Function: Adjust the vertical position of the test motor 6 and clamp it in place by pressing it with the positioning and clamping cylinder 23.

[0025] Structure: The clamping and positioning assembly is rigidly connected to the base plate 1 via the base plate 21.

[0026] ①Up and down adjustment unit: The first slide servo motor 24 drives the V-shaped bracket 22 on the first mounting base 26 to move up and down, adjusting the test motor 6 to a suitable clamping position.

[0027] ② Clamping and positioning unit: Manually adjust the position of the positioning and clamping cylinder 23 on the first linear module 25 to ensure that the positioning and clamping cylinder 23 can press against the outer circle of the test motor 6 housing after it moves downward.

[0028] Clamping test components (combined) Figure 3 ) Function: During the axial clearance test, the test motor 6 shaft extension is clamped and the corresponding test force is applied.

[0029] structure: ① Left and right adjustment unit: The second slide servo motor 31 drives the gripper cylinder 35 to move left and right to the appropriate shaft extension position through the second linear module 34.

[0030] ② Adaptive clamping unit: The gripper cylinder 35 is mounted on the first linear slide 36. When the gripper cylinder 35 moves to clamp the shaft extension, the position of the gripper cylinder 35 can be adaptively adjusted so that the center of the gripper is aligned with the center of the shaft.

[0031] ③Force application unit: The force application test cylinder 3-3 is controlled by a proportional valve to drive the gripper to move left and right on the second linear slide 37, providing test force for axial clearance detection.

[0032] During the test, the limiting cylinder 32 controls the extension and retraction actions to limit the piston of the force test cylinder 33 to always be in the middle position of the cylinder, so that the gripper cylinder 35 has enough space to move when the shaft extends left and right.

[0033] Left displacement monitoring component (combined with) Figure 4 ) Function: Monitors and tests the displacement change of the 6 shaft extensions of the test motor under the action of test force, and the results are used to calculate the axial clearance value.

[0034] Structure: The left displacement monitoring component is rigidly connected to the base 1 via the second mounting bracket 42.

[0035] During the axial clearance detection process, the position of the left displacement sensor 44 on the third slide servo motor 41 is adjusted until the telescopic probe contacts the shaft extension end face of the test motor 6, with a compression of about 3mm.

[0036] Right displacement monitoring component (combined with) Figure 5 ) Function: Monitors and tests the displacement change of the motor housing under test force, and uses the results to calculate the axial clearance value.

[0037] Structure: The right displacement monitoring component is rigidly connected to the base 1 via the fourth slide servo motor 51.

[0038] The right displacement sensor 53 is mounted on the fourth slide servo motor 51 via a cross slide 52, where the cross slide 52 is used to manually adjust the front and rear positions of the right displacement sensor 53. During axial clearance detection, the left and right positions of the right displacement sensor 53 on the fourth slide servo motor 51 are adjusted until the telescopic probe contacts the end face of the tail housing of the test motor 6, with a compression of about 3mm.

[0039] The testing principle of this invention is as follows: During the axial clearance test, the gripper cylinder 35 clamps the motor shaft extension and pushes it to the right with a specified test force. At this time, the left displacement sensor 44 collects the current position Z1 of the shaft extension, and the right displacement sensor 53 collects the current position Y1 of the housing. After completing the above operation, the shaft extension is clamped and pulled to the left with a specified test force. At this time, the left displacement sensor 44 collects the current position Z2 of the shaft extension, and the right displacement sensor 53 collects the current position Y2 of the housing. Since the larger the compression of the two displacement sensor probes, the larger the collected value, the axial clearance of the motor L can be calculated as L = Z2 + Y2 - Z1 - Y1.

[0040] As described above, this invention enables efficient detection of axial clearance in single-shaft motors, providing consistent test data and high repeatability. It offers valuable reference for assembly and adjustment personnel, further enhancing overall motor performance and delivery quality. The motor clamping scheme, employing a rubber-coated V-shaped bracket and a movable clamping cylinder with a polyurethane clamping block, reliably clamps motors of different diameters and lengths, protecting the motor's appearance while significantly improving the versatility of the testing device. The left and right servo-driven floating gripper scheme effectively clamps motor shafts of varying diameters and lengths, ensuring the force applied by the test cylinder and the motor axis are aligned, preventing strain and improving test accuracy. Two high-precision contact displacement sensors simultaneously monitor changes in motor shaft displacement and minor axial movement of the motor during testing, compensating for this movement through algorithms, greatly enhancing test accuracy. A proportional valve controls the test cylinder, allowing precise adjustment of the test force to meet the testing requirements of different motor models.

[0041] Those skilled in the art will understand that the above embodiments can be modified in form and detail in practical applications without departing from the spirit and scope of the invention.

Claims

1. A general-purpose precision detection device for axial clearance of a single-output shaft motor, characterized in that: The device includes a clamping and positioning component (2), a clamping and testing component (3), a left displacement monitoring component (4), and a right displacement monitoring component (5) integrated on a base (1). The clamping and testing component (3) and the left displacement monitoring component (4) are located on one side of the clamping and positioning component (2), and the right displacement monitoring component (5) is located on the other side of the clamping and positioning component (2). The clamping and testing component (3) is horizontally arranged with the clamping and positioning component (2), and the left displacement monitoring component (4) is located on one side of the clamping and testing component (3). The clamping and positioning component (2) is used to support and press the test motor (6), and the clamping and testing component (3) is used to clamp the shaft extension of the test motor (6) and apply an axial test force to it. The left displacement monitoring component (4) is used to monitor the axial displacement of the shaft extension end face of the test motor (6), and the right displacement monitoring component (5) is used to monitor the axial displacement of the housing end face of the test motor (6).

2. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 1, characterized in that: The clamping and positioning assembly (2) includes a base plate (21) fixed on the base (1), on which a first slide servo motor (24) and a first linear module (25) are mounted; the output end of the first slide servo motor (24) is connected to a first mounting seat (26) so that the first mounting seat (26) moves in the vertical direction, and a V-shaped bracket (22) for supporting the test motor (6) is connected to one side of the first mounting seat (26); a positioning and clamping cylinder (23) is provided on the slider of the first linear module (25) so that the positioning and clamping cylinder (23) is adjusted to a horizontal position along the first linear module (25), and the piston rod of the positioning and clamping cylinder (23) faces the V-shaped bracket (22) for pressing the test motor (6) downward.

3. The universal single-output shaft motor axial clearance precision detection device as described in claim 1, characterized in that: The clamping test assembly (3) includes a second slide servo motor (31), a force test cylinder (33), and a second linear slide (37) mounted on the base (1). The output end of the second slide servo motor (31) is connected to the first linear slide (36) through the second linear module (34), driving the first linear slide (36) to move along the axial direction of the test motor (6). The slider of the first linear slide (36) is provided with a gripper cylinder (35), and the piston rod of the force test cylinder (33) is connected to the gripper cylinder (35). The slider of the second linear slide (37) is connected to the gripper cylinder (35), guiding the gripper cylinder (35) to move along the axial direction.

4. The universal single-output shaft motor axial clearance precision detection device as described in claim 3, characterized in that: The clamping test assembly (3) also includes a limiting cylinder (32) mounted on the base (1), the piston rod of which can extend to limit the piston stroke of the force test cylinder (33).

5. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 1, characterized in that: The left displacement monitoring component (4) includes a second mounting base (42) mounted on the base (1), and a third slide servo motor (41) is provided on the second mounting base (42); the output end of the third slide servo motor (41) is connected to a mounting arm (43), and the mounting arm (43) is driven by the third slide servo motor (41) to move axially; a left displacement sensor (44) is mounted on the mounting arm (43), and the probe of the left displacement sensor (44) faces the clamping test component (3).

6. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 1, characterized in that: The right displacement monitoring component (5) includes a fourth slide servo motor (51) mounted on the base (1). The output end of the fourth slide servo motor (51) is connected to a cross slide (52). The cross slide (52) is driven by the fourth slide servo motor (51) to move axially. The cross slide (52) is provided with a right displacement sensor (53). The probe of the right displacement sensor (53) faces the clamping and positioning component (2).

7. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 2, characterized in that: The piston rod end of the positioning and clamping cylinder (23) is provided with a polyurethane clamping block, and the support surface of the V-shaped bracket (22) is covered with a rubber coating.

8. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 3 or 4, characterized in that: The force testing cylinder (33) is connected to a proportional valve to control the magnitude of the output test force.

9. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 5, characterized in that: The left displacement sensor (44) is a contact-type high-precision displacement sensor.

10. The general-purpose single-output-shaft motor axial clearance precision detection device as described in claim 6, characterized in that: The right displacement sensor (53) is a contact-type high-precision displacement sensor.

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