Stepping motor pull-in torque detection jig

Abstract

The utility model discloses a kind of stepping motor pull-in torque detection fixtures, the stepping motor includes motor support, motor main body, output gear, and motor support is set up support mounting hole;The stepping motor pull-in torque detection fixture includes detection workbench, and the hysteresis motor of being installed in detection workbench, the top plate of workbench is set on the upper end of detection workbench, and the input shaft of hysteresis motor is equipped with the matching gear located in the upper end side of top plate of workbench;Linear guide rail is installed on the upper surface of top plate of workbench in the side of matching gear, and linear guide rail slidingly installs linear slider;Linear slider upper surface is positioned with slider positioning column;When detecting, the motor support of measured stepping motor is placed on the upper surface of linear slider, and slider positioning column is inserted in the corresponding support mounting hole of motor support. Through the above structure design, the utility model has the advantages of novel design, simple structure, high detection operation efficiency, and can be effectively applied to gear output stepping motor pull-in torque detection.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a stepper motor traction torque detection fixture. Background Technology

[0002] Pull-in torque and pull-out torque are key parameters for evaluating stepper motor performance, directly determining the stepper motor's load capacity and operational stability under different operating conditions. Pull-in torque refers to the minimum torque required for a stepper motor to start directly and drive the load after being powered on. This parameter reflects the motor's ability to accelerate from a standstill to stable operation and is usually closely related to the motor's stepping frequency (pulse frequency). When the load torque exceeds the stepper motor's pull-in torque, the stepper motor may fail to start normally, leading to step loss or stalling. Therefore, it is necessary to perform pull-in torque testing on stepper motor products before they leave the factory.

[0003] Among them, the Chinese utility model patent with patent number ZL202323034941.0 and patent name: A Torque Measuring Device and Torque Measuring System, substantially discloses a torque (torque) detection fixture; the aforementioned torque measuring device discloses the following technical solution: a torque measuring device, including an impeller mounting shaft, a drive motor, a hysteresis torque loading device, and a worktable, wherein the impeller is connected to the impeller mounting shaft and the impeller rotates synchronously with the impeller mounting shaft; the drive motor is connected to the impeller mounting shaft and drives the impeller to rotate around its own axis through the impeller mounting shaft; the hysteresis torque loading device is connected to the impeller mounting shaft and applies resistance to the impeller through the impeller mounting shaft to simulate the resistance encountered by the impeller when rotating in body fluid; the worktable includes a mounting platform, and the drive motor, the hysteresis torque loading device, and the torque speed sensor are respectively connected to the mounting platform through mounting seats; the drive motor and the hysteresis torque loading device are both connected to the impeller mounting shaft through couplings.

[0004] It should be noted that the aforementioned torque measuring device still has the following shortcomings, specifically: Defect 1: Before testing, the drive motor needs to be securely installed on the corresponding mounting base, and the power transmission between the drive motor and the hysteresis torque loading device needs to be achieved through a coupling. That is, the drive motor is securely installed and the coupling is installed before testing. The above procedures will affect the efficiency of the testing operation. Defect 2: This torque measuring device is not suitable for detecting the pulling torque of a stepper motor with gear output. Utility Model Content

[0005] The purpose of this utility model is to provide a stepper motor traction torque testing fixture to address the shortcomings of the existing technology. This stepper motor traction torque testing fixture has a novel design, simple structure, high testing efficiency, and can be effectively applied to the traction torque testing of gear output stepper motors.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0007] A stepper motor traction torque detection fixture, the stepper motor includes a motor bracket, a motor body mounted on the motor bracket, and an output gear rotatably mounted on the motor bracket. The motor body and the output gear are drivenly connected. The motor bracket has two bracket mounting holes arranged at intervals. The stepper motor pull torque testing fixture includes a testing worktable and a hysteresis motor mounted on the testing worktable; The upper end of the testing workbench is provided with a horizontally arranged workbench top plate. The input shaft of the hysteresis motor extends upward to the upper side of the workbench top plate, and the input shaft of the hysteresis motor is equipped with a mating gear located on the upper side of the workbench top plate. A linear guide rail is installed on the upper surface of the worktable top plate next to the mating gear, and a linear slider is slidably installed on the linear guide rail; the upper surface of the linear slider is provided with upward protruding slider positioning posts corresponding to the mounting holes of each bracket of the motor bracket. When the stepper motor is pulled into the torque testing fixture for testing, the motor bracket of the stepper motor under test is placed on the upper surface of the linear slider, and each slider positioning post of the linear slider is inserted into the corresponding bracket mounting hole of the motor bracket.

[0008] The mating gear is provided with a gear shaft, which is connected to the mating gear in a non-rotating manner. The core of the gear shaft has a downward-opening shaft hole. The upper end of the input shaft of the hysteresis motor is provided with a first anti-rotation plane, and the inner wall of the shaft hole of the gear shaft is provided with a second anti-rotation plane. The input shaft of the hysteresis motor is inserted into the shaft hole of the gear shaft, and the first anti-rotation plane and the second anti-rotation plane are arranged opposite each other.

[0009] The gear shaft and the mating gear are an integral structure.

[0010] The testing workbench also includes a workbench base plate located at the lower end of the workbench top plate. Two workbench support plates are installed between the workbench base plate and the workbench top plate, which are arranged at left and right intervals and extend vertically respectively. The upper end of each workbench support plate is connected to the workbench top plate, and the lower end of each workbench support plate is connected to the workbench base plate.

[0011] The hysteresis motor is located between the two workbench support plates, and the housing of the hysteresis motor is screwed and fastened to the lower surface of the top plate of the workbench. The top plate of the workbench has a vertical through hole corresponding to the hysteresis motor, and the input shaft of the hysteresis motor passes through the through hole of the top plate of the workbench from bottom to top.

[0012] Compared with the prior art, the present invention has the following beneficial effects, specifically: 1. This utility model uses a linear slider to position the stepper motor under test. During testing, the linear slider is pushed to engage the output gear of the stepper motor with the mating gear. After testing, the linear slider is pulled to disengage the output gear of the stepper motor from the mating gear. Compared with the prior art, the testing process of this utility model is simpler and the testing efficiency is higher. 2. This utility model can effectively detect the pulling torque of a stepper motor with gear output by meshing with the output gear of the stepper motor being tested; 3. Therefore, the stepper motor traction torque testing fixture of this utility model has the advantages of novel design, simple structure and high testing efficiency, and can be effectively applied to the traction torque testing of gear output stepper motors. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of its breakdown.

[0016] Figure 3 This is an exploded view of the present invention from another perspective.

[0017] Figure 4 This is a schematic diagram of the mating gear of this utility model.

[0018] exist Figures 1 to 4 This includes: 1-Stepper motor under test; 11-Motor bracket; 111-Bracket mounting hole; 12-Motor body; 13-Output gear; 2-Testing worktable; 21-Worktable top plate; 211-Top plate through hole; 22-Worktable bottom plate; 23-Worktable support plate; 3-Hysteresis motor; 31-Input shaft; 311-First anti-rotation plane; 41-Matching gear; 42-Gear shaft; 421-Shaft hole; 422-Second anti-rotation plane; 5-Linear guide rail; 6-Linear slider; 61-Slider positioning post. Detailed Implementation

[0019] The present invention will now be described in conjunction with specific embodiments.

[0020] Example 1, as Figures 1 to 3 As shown, a stepper motor traction torque detection fixture is provided. The stepper motor includes a motor bracket 11, a motor body 12 mounted on the motor bracket 11, and an output gear 13 rotatably mounted on the motor bracket 11. The motor body 12 and the output gear 13 are drivenly connected. The motor bracket 11 has two bracket mounting holes 111 arranged at intervals.

[0021] Among them, such as Figures 1 to 3 As shown, the stepper motor traction torque detection fixture includes a detection worktable 2 and a hysteresis motor 3 mounted on the detection worktable 2.

[0022] Furthermore, such as Figures 1 to 4 As shown, the upper end of the testing workbench 2 is provided with a horizontally arranged workbench top plate 21, the input shaft 31 of the hysteresis motor 3 extends upward to the upper side of the workbench top plate 21, and the input shaft 31 of the hysteresis motor 3 is equipped with a mating gear 41 located on the upper side of the workbench top plate 21.

[0023] Furthermore, such as Figures 1 to 3 As shown, a linear guide rail 5 is installed on the upper surface of the worktable top plate 21 next to the mating gear 41, and a linear slider 6 is slidably installed on the linear guide rail 5; the upper surface of the linear slider 6 is provided with upwardly protruding slider positioning posts 61 corresponding to the mounting holes 111 of the motor bracket 11.

[0024] In the process of testing the pull torque of the stepper motor 1 under test using the stepper motor pull torque testing fixture of this embodiment, the testing process includes the following steps, specifically: Step a: Control the current entering the hysteresis motor 3 so that the hysteresis motor 3 obtains a holding torque of a corresponding value. This holding torque needs to take into account the transmission ratio and transmission efficiency between the output gear 13 and the mating gear 41 of the stepper motor 1 under test. Step b: Place the motor bracket 11 of the stepper motor 1 under test on the upper surface of the linear slider 6, and each slider positioning post 61 of the linear slider 6 is respectively inserted into the corresponding bracket mounting hole 111 of the motor bracket 11, so as to realize the placement and positioning of the stepper motor 1 under test by the cooperation of the slider positioning post 61 with the bracket mounting hole 111 of the motor bracket 11. Step c: After the stepper motor 1 under test is positioned on the linear slider 6, push the linear slider 6 toward the mating gear 41 so that the output gear 13 of the stepper motor 1 under test meshes with the mating gear 41. Step d: Power on the stepper motor 1 under test according to the test conditions. During this process, observe whether the mating gear 41 rotates, and then determine whether the hysteresis motor 3 is driven, so as to detect the pulling torque of the stepper motor 1 under test. Step e: After the stepper motor 1 under test has completed the test, pull the linear slider 6 toward the side away from the mating gear 41 so that the output gear 13 of the stepper motor 1 under test is disengaged from the mating gear 41. Then remove the stepper motor 1 under test that has completed the test from the linear slider 6, and complete the subsequent test operation of the stepper motor 1 under test according to the above steps a and d.

[0025] It should be emphasized that in this embodiment, the linear slider 6 is used to position the stepper motor 1 under test. During the test, the linear slider 6 is pushed so that the output gear 13 of the stepper motor 1 under test meshes with the mating gear 41. After the test is completed, the linear slider 6 is pulled so that the output gear 13 of the stepper motor disengages from the mating gear 41. Compared with the prior art, the stepper motor pull torque testing fixture in this embodiment has a simpler testing process and higher testing efficiency.

[0026] It should be further emphasized that the stepper motor pull-in torque detection fixture of this embodiment engages with the output gear 13 of the stepper motor 1 under test through the meshing gear 41. That is, the stepper motor pull-in torque detection fixture of this embodiment can be effectively applied to the detection of the pull-in torque of the stepper motor with gear output.

[0027] In summary, the stepper motor traction torque detection fixture of this embodiment has the advantages of novel design, simple structure, and high detection efficiency through the above structural design, and can be effectively applied to the detection of traction torque of gear output stepper motors.

[0028] Example 2, as Figures 1 to 4 As shown, the difference between this embodiment 2 and embodiment 1 is that the mating gear 41 is provided with a gear shaft 42, the gear shaft 42 is connected to the mating gear 41 in a non-rotating manner, and the core of the gear shaft 42 is provided with a downward-facing shaft hole 421.

[0029] It should be explained that the gear shaft 42 and the mating gear 41 can be an integral structure; of course, the above-mentioned integral structure design does not constitute a limitation on this embodiment two, that is, the gear shaft 42 and the mating gear 41 in this embodiment two can also adopt a separate structure design, for example: the mating gear 41 can be installed on the upper end of the gear shaft 42 by means of a clip.

[0030] In addition, the upper end of the input shaft 31 of the hysteresis motor 3 is provided with a first anti-rotation plane 311, and the inner wall of the shaft hole 421 of the gear shaft 42 is provided with a second anti-rotation plane 422. The input shaft 31 of the hysteresis motor 3 is inserted into the shaft hole 421 of the gear shaft 42, and the first anti-rotation plane 311 and the second anti-rotation plane 422 are arranged opposite each other.

[0031] For the stepper motor pull torque testing fixture in this embodiment 2, the mating gear 41 is installed on the upper end of the input shaft 31 of the hysteresis motor 3 by means of an anti-rotation sleeve. This structural design has the following advantages: 1. The mating gear 41 can be quickly installed; 2. The mating gear 41 can be quickly replaced during testing for different stepper motor 1 products under test.

[0032] Example 3, as Figures 1 to 3 As shown, the difference between this embodiment 3 and embodiment 1 is that the detection workbench 2 also includes a workbench base plate 22 located on the lower side of the workbench top plate 21. Two workbench support plates 23 are installed between the workbench base plate 22 and the workbench top plate 21, which are arranged at left and right intervals and extend vertically respectively. The upper end of each workbench support plate 23 is connected to the workbench top plate 21, and the lower end of each workbench support plate 23 is connected to the workbench base plate 22.

[0033] Example 4, as Figures 1 to 3 As shown, the difference between this embodiment four and embodiment three is that the hysteresis motor 3 is located between the two workbench support plates 23, and the housing of the hysteresis motor 3 is screwed and fastened to the lower surface of the workbench top plate 21.

[0034] The top plate 21 of the workbench has a vertical through hole 211 corresponding to the hysteresis motor 3, and the input shaft 31 of the hysteresis motor 3 passes through the through hole 211 of the top plate of the workbench 21 from bottom to top.

[0035] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A stepper motor traction torque detection fixture, the stepper motor including a motor bracket (11), a motor body (12) mounted on the motor bracket (11), and an output gear (13) rotatably mounted on the motor bracket (11), the motor body (12) and the output gear (13) being drivenly connected, and the motor bracket (11) having two bracket mounting holes (111) arranged at intervals. The stepper motor pull torque testing fixture includes a testing worktable (2) and a hysteresis motor (3) mounted on the testing worktable (2); Its features are: The upper end of the testing workbench (2) is provided with a horizontally arranged workbench top plate (21), the input shaft (31) of the hysteresis motor (3) extends upward to the upper side of the workbench top plate (21), and the input shaft (31) of the hysteresis motor (3) is equipped with a mating gear (41) located on the upper side of the workbench top plate (21). A linear guide rail (5) is installed on the upper surface of the worktable top plate (21) next to the mating gear (41), and a linear slider (6) is slidably installed on the linear guide rail (5); the upper surface of the linear slider (6) is provided with upward protruding slider positioning pins (61) corresponding to the mounting holes (111) of the motor bracket (11). When the stepper motor is pulled into the torque testing fixture for testing, the motor bracket (11) of the stepper motor (1) under test is placed on the upper surface of the linear slider (6), and each slider positioning post (61) of the linear slider (6) is inserted into the corresponding bracket mounting hole (111) of the motor bracket (11).

2. The stepper motor traction torque detection fixture according to claim 1, characterized in that: The mating gear (41) is provided with a gear shaft (42), the gear shaft (42) is connected to the mating gear (41) in a non-rotating manner, and the core of the gear shaft (42) is provided with a downward-facing shaft hole (421). The upper end of the input shaft (31) of the hysteresis motor (3) is provided with a first anti-rotation plane (311), and the inner wall of the shaft hole (421) of the gear shaft (42) is provided with a second anti-rotation plane (422). The input shaft (31) of the hysteresis motor (3) is inserted into the shaft hole (421) of the gear shaft (42), and the first anti-rotation plane (311) and the second anti-rotation plane (422) are arranged opposite each other.

3. The stepper motor traction torque detection fixture according to claim 2, characterized in that: The gear shaft (42) and the mating gear (41) are an integral structure.

4. The stepper motor traction torque detection fixture according to claim 1, characterized in that: The testing workbench (2) also includes a workbench base plate (22) located at the lower end of the workbench top plate (21). Two workbench support plates (23) are installed between the workbench base plate (22) and the workbench top plate (21) and are arranged at left and right intervals and extend vertically respectively. The upper end of each workbench support plate (23) is connected to the workbench top plate (21) respectively, and the lower end of each workbench support plate (23) is connected to the workbench base plate (22) respectively.

5. A stepper motor traction torque detection fixture according to claim 4, characterized in that: The hysteresis motor (3) is located between the two workbench support plates (23), and the housing of the hysteresis motor (3) is screwed and fastened to the lower surface of the workbench top plate (21). The top plate (21) of the workbench has a vertical through hole (211) corresponding to the hysteresis motor (3), and the input shaft (31) of the hysteresis motor (3) passes through the through hole (211) of the top plate of the workbench (21) from bottom to top.

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