CN212539484U

CN212539484U - Aging test equipment for stepping motor

Info

Publication number: CN212539484U
Application number: CN202022117331.7U
Authority: CN
Inventors: 邵立伟; 黄毅; 林嘉文
Original assignee: Guangdong Hengchi Technology Co ltd
Current assignee: Guangdong Hengchi Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-02-12
Anticipated expiration: 2030-09-23

Abstract

The application relates to a step motor aging testing equipment, step motor aging testing equipment includes: a frame; a lifting mechanism including a drum rotatably connected to the frame; one end of the test spring is connected with the winding drum, the other end of the test spring is connected with the rack, and when the winding drum is driven by the stepping motor to rotate, the test spring is driven to deform so as to test the stepping motor. The aging test equipment for the stepping motor is connected with the test spring through the winding drum, the stepping motor drives the test spring to repeatedly deform in the aging test process to realize the aging test of the stepping motor, and the size of the deformation amount of the test spring is only different for the stepping motors of different models, so that the aging test equipment can be adapted to the aging test of the stepping motors of different models.

Description

Aging test equipment for stepping motor

Technical Field

The utility model relates to a motor test field, especially a step motor aging testing equipment.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The step motor needs to be subjected to an aging test before leaving the factory. Some current methods for measuring the torque characteristics of the stepping motor are too complicated, and some methods are too complex to cause higher cost. Some simple structure of torque measurement structure in the past, but complex operation, for example common one traditional measurement mode is hung the heavy object on step motor, and the biggest heavy object that the motor can be lifted can be turned into the maximum torque. Yet another method is based on an improvement of the former measuring method, i.e. using the principle of leverage, the length of the lever is changed without changing the weight of the weight. The two methods are relatively simple in structure and operation, but different weights or lever lengths are required to be configured for the stepping motors which cannot be of different types, and the operation of the stepping motors with more types is troublesome.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a stepping motor aging test apparatus which can cope with the aging test requirements of the stepping motor of the impossible model.

A stepping motor aging test apparatus comprising:

a frame;

a lifting mechanism including a drum rotatably connected to the frame;

one end of the test spring is connected with the winding drum, the other end of the test spring is connected with the rack, and when the winding drum is driven by the stepping motor to rotate, the test spring is driven to deform so as to test the stepping motor.

Preferably, the lifting mechanism further comprises a grating and a proximity switch, the grating is distributed along the circumferential direction, and light emitted by the proximity switch penetrates through the grating to detect the rotation angle of the winding drum.

Preferably, the lifting mechanism further comprises a turntable, the grating is arranged on the turntable and extends along the circumferential direction of the turntable, and the turntable is coaxially connected with the winding drum and used for detecting the rotation angle of the winding drum through the grating.

Preferably, the test spring is a compression spring.

Preferably, the test device further comprises a slider movably connected to the frame, and the test spring is connected to the frame through the slider.

Preferably, the winding drum winds a connecting rope, the end of the connecting rope is connected with the test spring, and the winding drum pulls the test spring to stretch and deform through the connecting rope.

Preferably, the connecting rope is connected with an indicating needle, and the rack is provided with a scale extending along the extension direction of the test spring so as to measure the deformation amount of the test spring.

Preferably, the test spring is a torsion spring, and the winding drum is coaxially connected with the test spring to drive the test spring to deform in a torsion manner.

Compared with the prior art, the aging test equipment for the stepping motor is connected with the test spring through the winding drum, the stepping motor drives the test spring to repeatedly deform in the aging test process to realize the aging test of the stepping motor, and the size of deformation of the test spring is only different for the stepping motors of different models, so that the aging test equipment can be adapted to the aging test of the stepping motors of different models.

Furthermore, the step motor aging test equipment can control the stepping amount of the step motor until the torque output by the step motor is balanced with the test spring, so that the maximum output torque of the step motor can be measured simultaneously, and convenience is brought to the test of the step motor.

Drawings

In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a step motor aging test device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of a step motor aging test device according to another embodiment of the present disclosure.

Description of the main elements

The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Fig. 1 is a schematic structural diagram of a step motor 10 aging test apparatus according to an embodiment of the present disclosure. As shown in fig. 1, the step motor 10 aging test apparatus includes a frame (not shown), a lift mechanism 20, and a test spring 30. The frame is used for fixing the installation mechanism part, the lifting mechanism 20 is connected to the stepping motor 10 to be tested, and the test spring 30 is connected with the lifting mechanism 20 and used for driving the test spring 30 to repeatedly stretch and deform under the driving of the stepping motor 10 through the lifting mechanism 20 so as to test the aging performance of the stepping motor 10.

As shown in fig. 1, the lifting mechanism 20 includes a drum 21, a turntable 22, and a connecting rope 24. The drum 21 is cylindrical and preferably coaxially detachably connected to the output shaft of the stepping motor 10. The stepper motor 10 is connected when it is desired to test the stepper motor 10, and after testing is complete, the stepper motor 10 can be removed from the spool 21. The turntable 22 is substantially disc-shaped, and the turntable 22 and the winding drum 21 are coaxially connected and rotationally connected to the frame, so that the turntable 22 can coaxially rotate along with the winding drum 21, i.e. the rotation angle of the turntable 22 is the same as that of the winding drum 21. In this embodiment, the lifting mechanism 20 further includes a grating 221 and a proximity switch 23, and the grating 221 is distributed along the circumferential direction within 360 °. The proximity switch 23 is preferably a correlation type photoelectric switch, the proximity switch 23 is installed on both sides of the rotary plate 22, and the light emitted from the proximity switch 23 is received through the grating 221, so that the rotation angle of the drum 21 can be detected.

In this embodiment, the connection rope 24 is wound around the outer surface of the winding drum 21, and the free end of the connection rope 24 is downwardly connected to the end of the test spring 30 to pull the test spring 30 to be stretched. In some preferred embodiments, the connecting cord 24 is provided with a pointer 241, the frame is provided with a scale 242 extending along the extension and contraction direction of the test spring 30, the pointer 241 points to the scale 242, and the amount of movement of the pointer 241 can be measured by the scale 242 during the movement of the pointer 241 following the connecting cord 24, so that the amount of deformation of the test spring 30 can be measured.

The test spring 30 is preferably a compression spring. The pressure spring is a mechanical part which works by elasticity, is generally made of spring steel, and can control the movement of a machine part, relieve impact or vibration, store energy, measure the force and the like by utilizing the elasticity of the pressure spring. The spring constant k of the pressure spring is a generated load per a deformation distance of 1mm generated when the pressure spring is compressed and extended, and is calculated as follows:

K＝(G*d⁴)/(8*Dm³*Nc)

wherein G is the stiffness modulus of the wire, d is the wire diameter, Dm is the difference between the outer diameter and the wire diameter of the pressure spring, Nc is the effective number of turns, and the spring constant k is 0.571kgf/mm by taking a common piano wire as an example.

In the present embodiment, the pressure spring extends in the vertical direction, and has one end connected to the connection cord 24 and the other end connected to the slider 31. The slider 31 is movably connected to the frame, and the test spring 30 is connected to the frame through the slider 31. When the test is needed, the sliding block 31 can be fixedly connected to the rack through the connecting piece, when the position of the sliding block 31 needs to be adjusted, the connecting piece can be loosened, the sliding block 31 is moved to adjust the position of the sliding block 31, and therefore the pressure spring can be located in a proper deformation range. When the stepping motor 10 drives the winding drum 21 to rotate, the test spring 30 is driven to deform so as to test the stepping motor 10.

Fig. 2 is a schematic structural diagram of a step motor 10 aging test apparatus according to another embodiment of the present disclosure. The present embodiment is different from the embodiment of the aging test apparatus for a stepping motor 10 shown in fig. 1 in that the test spring 30 is a torsion spring, one end of the test spring 30 is connected to the frame, and the other end is coaxially connected to the winding drum 21. During testing, the stepping motor 10 drives the testing spring 30 to be deformed in a torsional mode through the winding drum 21, and the aging performance of the stepping motor 10 is tested through repeated torsional deformation.

The aging test method of the stepping motor 10 will be described in detail below in conjunction with the aging test apparatus of the stepping motor 10 shown in fig. 1 and 2. The aging test method of the stepping motor 10 includes the following steps.

First, the output shaft of the stepping motor 10 to be tested is connected to the reel 21 so that the stepping motor 10 can drive the reel 21 to rotate.

Next, the stepping motor 10 is set to test the work output each time. Specifically, parameters such as the rotation angle, the output power, and the driving time of the stepping motor 10 may be set so that the stepping motor 10 can output a quantitative work every time it is tested.

Then, the stepping motor 10 is controlled to drive the winding drum 21 to rotate, the test spring 30 is driven to deform until the preset work output is completed, and the work output by the stepping motor 10 each time can be calculated according to the deformation of the test spring 30 and the spring constant k.

And finally, controlling the stepping motor 10 to stop outputting, enabling the winding drum 21 to rotate to the initial position under the action of the restoring force of the test spring 30, and repeating the steps to test the stepping motor 10.

During the test, the stepping motor 10 can also be driven to rotate until the output torque is balanced with the restoring force of the test spring 30, so as to measure the maximum output torque of the stepping motor 10.

The aging test equipment and the aging test method for the stepping motor 10 are characterized in that the winding drum 21 is connected with the test spring 30, the stepping motor 10 drives the test spring 30 to repeatedly deform in the aging test process to realize the aging test of the stepping motor 10, and only the deformation quantity of the test spring 30 is different for the stepping motors 10 of different models, so that the aging test equipment and the aging test method can be adapted to the aging tests of the stepping motors 10 of different models.

Further, the above-mentioned aging testing apparatus and testing method for the stepping motor 10 can also control the stepping amount of the stepping motor 10 until the torque output by the stepping motor 10 is balanced with the testing spring 30, so that the maximum output torque of the stepping motor 10 can be simultaneously measured, and convenience is provided for the testing of the stepping motor 10.

In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.

Claims

1. A stepping motor aging test apparatus, comprising:

a frame;

a lifting mechanism including a drum rotatably connected to the frame;

2. The stepping motor aging test apparatus of claim 1, wherein the elevating mechanism further comprises a grating and proximity switches, the grating being circumferentially distributed, the proximity switches emitting light through the grating to detect the rotation angle of the drum.

3. The stepping motor aging test apparatus of claim 2, wherein the elevating mechanism further comprises a turntable, the grating is provided on the turntable and extends in a circumferential direction of the turntable, and the turntable is coaxially connected to the winding drum for detecting a rotation angle of the winding drum through the grating.

4. The stepping motor degradation testing apparatus of claim 3, wherein the test spring is a pressure spring.

5. The stepping motor degradation testing apparatus of claim 4, further comprising a slider movably connected to said frame, said test spring being connected to said frame through said slider.

6. The stepping motor aging test device according to claim 1, wherein the winding drum winds a connection rope, an end of the connection rope is connected with the test spring, and the winding drum pulls the test spring to be deformed in a stretching manner through the connection rope.

7. The stepping motor aging test apparatus of claim 6, wherein an indicating pin is connected to the connection cord, and the frame is provided with a scale extending in a direction in which the test spring is extended and contracted to measure a deformation amount of the test spring.

8. The stepping motor aging test apparatus of claim 1, wherein the test spring is a torsion spring, and the reel is coaxially connected to the test spring to drive the test spring to be torsionally deformed.