Durability testing device and testing method for stepper motor

Abstract

The present invention relates to a durability testing device and a testing method for a stepper motor, and relates to a field related to durability testing, including a test box, wherein the test box comprises a top box and a bottom box, wherein the top box and the bottom box are fixed via a No. 1 connecting plate, a supporting leg is fixed to the bottom of the bottom box, a box door is connected to one side of the top box, and two support plates are fixed via a support rod, a support plate located on the ground is slidably mounted on the No. 1 connecting plate via a pushing member, a plurality of No. 2 mounting seats are equidistantly fixed on the two support plates, a No. 1 guide rod is fixed to the top four corners of the No. 2 mounting seat, a No. 1 mounting seat is vertically and slidably mounted on the No. 1 guide rod, and the subsequent work of the test motor body after being placed in the No. 2 mounting seat and the No. 1 mounting seat can be automatically and uniformly completed through the above-mentioned correction work, thereby further improving the test effect.

Description

Technical Field

[0001] The present invention relates to the field related to durability testing, and in particular to a durability testing device and a testing method for a stepping motor. Background Art

[0002] A stepper motor is a motor that converts electrical pulse signals into corresponding angular displacement or linear displacement. Each time a pulse signal is input, the rotor rotates an angle or moves forward one step. The angular displacement or linear displacement output is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Therefore, a stepper motor is also called a pulse motor.

[0003] The lifespan of motors with different arrangement modes, materials and structures used in research and development is also different. In order to test whether a certain arrangement mode, material and structure has a longer service life, multiple tests are required. A stepper motor durability test device is disclosed after searching. The announcement number is CN205507037U. The device uses a single-chip microcontroller as the processing core and uses a stepper driver to control the rotation of the stepper motor to test its durability value. In actual testing, there are many ways to test, and the process of installing the motor on the test platform is the most time-consuming process, because during the test, the output shaft of the tested motor needs to be inserted into the test mechanism at the same time, and the test is carried out by starting the test motor. The insertion depth of the motor output shaft is usually a specified length. If it is too long or too short, there will be certain problems and instability.

[0004] Secondly, the circuit connection of the motor is also a cumbersome process, because in order to facilitate installation, the motor is usually fixed by clamping, and the position of the motor's power connection pin cannot be limited, so its position is not fixed. This step cannot be completed by equipment due to the unfixed position of the pin, so manual power connection is required;

[0005] The above two problems are both time-consuming in the testing process and are also the reasons for the low testing efficiency. However, the invention cannot solve the above two problems. Summary of the invention

[0006] The object of the present invention is to provide a durability testing device and a testing method for a stepper motor to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A durability testing device for a stepper motor, comprising:

[0009] A test box, the test box comprising a top box and a bottom box, the top box and the bottom box are fixed by a No. 1 connecting plate, legs are fixed to the bottom of the bottom box, and a box door is connected to one side of the top box;

[0010] Two support plates, the two support plates are fixed by support rods, and a support plate located at the ground is slidably mounted on the first connecting plate by a pushing member;

[0011] A plurality of No. 2 mounting seats are fixed at equal intervals on the two support plates, a No. 1 guide rod is fixed to the top four corners of the No. 2 mounting seat, a No. 1 mounting seat is vertically and slidably mounted on the No. 1 guide rod, the No. 1 mounting seat is connected to the lifting member installed on the support plate, and the lifting member is connected to the No. 1 correction component installed on the support plate;

[0012] A second correction component, the second correction component is installed at the bottom of the two support plates;

[0013] A drawer is slidably mounted on the bottom box, a processing device and a control module are fixed in the drawer, the processing device and the control module are electrically connected via a wire, a testing mechanism is fixed on the processing device, and the testing mechanism is electrically connected to the processing device via a wire.

[0014] As a further solution of the present invention: the pushing member includes two No. 1 screw rods rotatably mounted on the No. 1 connecting plate, and the two No. 1 screw rods are connected by a transmission chain;

[0015] The two No. 1 screw rods are both sleeved with No. 1 threaded sleeves that are threadably matched therewith, and the No. 1 threaded sleeves are fixed to the support plate via a connecting plate.

[0016] As a further solution of the present invention: the lifting member includes two No. 1 transmission frames penetrating through one of the support plates and slidably connected thereto, and the two No. 1 transmission frames are fixed to a plurality of No. 2 mounting seats;

[0017] Two cylinders are fixed on the other supporting plate, and the movable rods of the two cylinders are fixed to the two No. 1 transmission frames.

[0018] As a further solution of the present invention: the first correction assembly includes three correction frames, and the three correction frames are connected by a second connecting plate;

[0019] The three correction frames are all fixed with a slider on one side facing the support plate, and the correction frames are slidably matched with the slide grooves provided on the support plate through the slider. The three correction frames are provided with correction plates integrally formed therewith on both sides;

[0020] One side of the two correction frames is rotatably mounted with a transmission plate, and the other end of the transmission plate is rotatably connected to the first transmission frame;

[0021] Wherein, the correction frame is fixed with a correction plate arranged in a U shape.

[0022] As a further solution of the present invention: a copper sheet is provided on one side of the correction plate of the correction frame facing the pin of the test motor body, and the copper sheet is electrically connected to the power supply device through a wire.

[0023] As a further solution of the present invention: the second correction assembly includes a second transmission frame installed on the first connecting plate, and a plurality of rack parts are fixed on the second transmission frame;

[0024] A No. 2 screw rod is rotatably mounted on the support plate at the bottom of each of the No. 2 mounting seats, and both ends of the No. 2 screw rod are sleeved with a No. 2 threaded sleeve threadedly matched therewith, a push plate is fixed on the No. 2 threaded sleeve, and No. 2 guide rods slidingly matched with the No. 2 threaded sleeve are fixed on both sides of the support plate;

[0025] A transmission shaft perpendicular to the No. 2 screw is rotatably mounted at the bottom of the No. 2 screw, a No. 1 gear is coaxially fixed on the transmission shaft, the No. 1 gear is meshed with the rack portion, and the transmission shaft is also connected to the No. 2 screw via a bevel gear set.

[0026] As a further solution of the present invention: a support seat is fixed on the first connecting plate, and a rack plate is slidably mounted on the support seat;

[0027] The rack plate is provided with a limiting groove, and the limiting groove is slidably matched with a limiting block arranged in the support seat;

[0028] A No. 3 screw rod is fixed to the No. 2 transmission frame on the side facing the support seat, a No. 3 threaded sleeve is sleeved on the No. 3 screw rod and threadedly matched with the No. 3 threaded sleeve, the No. 3 threaded sleeve is rotatably connected to the support seat, a No. 2 gear is coaxially fixed on the No. 3 threaded sleeve, and the No. 2 gear is meshed with the rack plate;

[0029] A third guide rod is fixed to one side of the support seat and is slidably matched with the rack plate. A spring is sleeved on the third guide rod.

[0030] A roller matched with the box door is rotatably mounted on the side of the rack plate away from the spring.

[0031] As a further solution of the present invention: a temperature test piece is fixed on the first mounting seat, and the temperature test piece is electrically connected to the processing equipment through a wire.

[0032] The present invention also provides a durability test method for a stepper motor, using the durability test device for a stepper motor, comprising the following steps:

[0033] Step 1: Place the test motor body between the first mounting seat and the second mounting seat, and then move it toward the test mechanism through the pusher support plate;

[0034] Step 2: When the support plate moves, the position of the test motor body is adjusted by the first correction component and the second correction component, and the circuit is connected, and then the test motor body is clamped and fixed by driving the first mounting seat to stand upright and descend;

[0035] Step three, after the support plate moves to the end of the stroke, insert the output shaft of the test motor body into the test port of the test mechanism for testing.

[0036] Compared with the prior art, the present invention has the following beneficial effects: the present invention can clamp and fix the test motor body by the No. 2 mounting seat and the No. 1 mounting seat, and before clamping and fixing it, the correction work of the test motor body is completed by the No. 1 correction component and the No. 2 correction component;

[0037] Among them, the correction work includes the following two:

[0038] 1. Adjust and correct the test motor body front and back so that the center position of the test motor body is at the center position of the No. 1 mounting seat and the No. 2 mounting seat, so that the positions of the output shafts of multiple test motor bodies are the same, and then when the support plate moves to the end of the stroke, the length of the output shaft of the test motor body when inserted into the test port of the test mechanism is the same;

[0039] 2. Adjust the rotation angle of the test motor body so that the two pins of the test motor body are vertical and the two pins are connected to electricity. This step can automatically complete the circuit connection of the test motor;

[0040] Through the above-mentioned correction work, the subsequent work of placing the test motor body in the No. 2 mounting seat and the No. 1 mounting seat can be completed automatically and uniformly, and has a relatively high degree of automation, so that the efficiency during testing is further improved, and it is safer and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the durability testing device for stepper motors.

[0042] Figure 2 for Figure 1 Schematic diagram of the structure inside the middle top box.

[0043] Figure 3 This is a schematic diagram of the structure on the No. 1 connecting plate in the endurance test device for stepper motors.

[0044] Figure 4 for Figure 3 Schematic diagram of the structure in another direction.

[0045] Figure 5This is a schematic diagram of the structure of the No. 2 correction component in the endurance test device for stepper motors.

[0046] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0047] Figure 7 for Figure 5 Enlarged view of point B in the middle.

[0048] Figure 8 This is a schematic diagram of the structure of the No. 1 correction component in the endurance test device for stepper motors.

[0049] Fig. 9 Schematic diagram of the gap between the rack part and the second connecting plate in the endurance test device for the stepper motor.

[0050] Fig.10 This is an exploded view of the rack plate, gear No. 2 and related structures in the endurance test device for stepper motors.

[0051] Fig.11 This is a correction diagram of the correction frame of the endurance test device for stepper motors.

[0052] Fig.12 Schematic diagram of the correction of the push plate of the endurance test device for stepper motors.

[0053] In the figure: 1. test box; 101. No. 1 connecting plate; 2. box door; 3. drawer; 301. processing equipment; 302. control module; 4. test mechanism; 5. No. 1 screw rod; 501. transmission chain; 502. No. 1 threaded sleeve; 6. support plate; 601. support rod; 7. No. 1 transmission frame; 8. No. 1 mounting seat; 801. No. 2 mounting seat; 802. temperature test piece; 803. No. 1 guide rod; 804. rubber pad; 9. No. 2 transmission frame; 901. rack; 902. No. 1 gear; 10. correction frame; 11. test Motor body; 12. Assembly groove; 13. No. 2 screw rod; 1301. No. 2 threaded sleeve; 1302. Push plate; 1303. No. 2 guide rod; 1304. Bevel gear set; 14. Slide groove; 1401. Sliding block; 1402. No. 2 connecting plate; 15. No. 3 screw rod; 1501. No. 3 threaded sleeve; 16. Rack plate; 1601. No. 3 guide rod; 1602. Spring; 1603. Roller; 1604. Limiting groove; 17. Support seat; 1701. Limiting block; 18. No. 2 gear; 19. Cylinder; 20. Transmission plate. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0056] For example, see Figures 1 to 12 A durability test device for a stepper motor includes a test box 1, the test box 1 includes a top box and a bottom box, the top box and the bottom box are fixed by a No. 1 connecting plate 101, a leg is fixed at the bottom of the bottom box, and a box door 2 is connected to one side of the top box;

[0057] Two support plates 6, the two support plates 6 are fixed by a support rod 601, and one support plate 6 located at the ground is slidably installed on the first connecting plate 101 through a pushing member;

[0058] Multiple No. 2 mounting seats 801 are fixed on the two support plates 6 at equal distances, and No. 1 guide rods 803 are fixed on the four corners of the top of the No. 2 mounting seat 801. The No. 1 mounting seat 8 is vertically and slidably installed on the No. 1 guide rod 803. The No. 1 mounting seat 8 is connected to the lifting member installed on the support plate 6, and the lifting member is connected to the No. 1 correction component installed on the support plate 6;

[0059] The second correction component is installed at the bottom of the two support plates 6;

[0060] A drawer 3 is slidably installed on the bottom box, and a processing device 301 and a control module 302 are fixed in the drawer 3. The processing device 301 and the control module 302 are electrically connected through wires. A testing mechanism 4 is fixed on the processing device 301, and the testing mechanism 4 and the processing device 301 are electrically connected through wires.

[0061] A temperature test piece 802 is fixed on the first mounting seat 8 , and the temperature test piece 802 is electrically connected to the processing device 301 through a wire.

[0062] In the embodiment of the present invention, when the No. 1 mounting seat 8 is vertically lowered to clamp the test motor body 11, the No. 1 guide rod 803 contacts the test motor body 11, and the temperature of the test motor body 11 is tested by the No. 1 guide rod 803 and the data is sent to the processing device 301.

[0063] In the embodiment of the present invention, the test motor body 11 is placed between the No. 2 mounting seat 801 and the No. 1 mounting seat 8, the output shaft of the test motor body 11 is directed toward the test mechanism 4, and then the two support plates 6 are driven to move toward the test mechanism 4 by the push member, and the No. 2 correction component is driven to move when the support plate 6 moves toward the test mechanism 4, so that the position of the test motor body 11 is adjusted by the No. 2 correction component, so that the center position of the test motor body 11 is at the center position of the No. 1 mounting seat 8 and the No. 2 mounting seat 801. If no adjustment is performed, there are two problems:

[0064] Problem 1: One end of the output shaft of the test motor body 11 is too long. When the test motor body 11 is pushed to the end by the pushing member, when the output shaft of the test motor body 11 is inserted into the test port of the test mechanism 4, the test motor body 11 may be damaged due to the longer end of the output shaft.

[0065] Problem 2: One end of the output shaft of the test motor body 11 is too short, so when the test motor body 11 is pushed to the end by the pushing member, the output shaft of the test motor body 11 cannot be inserted into the test port of the test mechanism 4;

[0066] Then the center position of the test motor body 11 must be located at the center position of the No. 1 mounting seat 8 and the No. 2 mounting seat 801, and then the position thereof can be corrected by the No. 2 correction assembly;

[0067] When the lifting assembly is working, the plurality of No. 2 mounting seats 801 are driven to stand down and clamp the test motor body 11, and during the process of the No. 2 mounting seat 801 being lowered, the positions of the positive and negative poles of the test motor body 11 are adjusted by the No. 1 correction member, and the test motor body 11 is energized by the No. 2 correction assembly;

[0068] After the output shaft of the test motor body 11 is inserted into the test port of the test mechanism 4, the test motor body 11 is started uniformly to test the test motor body 11;

[0069] Among them, rubber pads 804 are provided on the opposite sides of the No. 1 mounting seat 8 and the No. 2 mounting seat 801. When the No. 1 mounting seat 8 and the No. 2 mounting seat 801 clamp the test motor body 11, the rubber pads 804 can be compressed to reduce the pressure on the test motor body 11 and make it have higher stability.

[0070] The pusher includes two No. 1 screw rods 5 rotatably mounted on a No. 1 connecting plate 101 , and the two No. 1 screw rods 5 are connected by a transmission chain 501 ;

[0071] The two No. 1 screw rods 5 are both sleeved with No. 1 threaded sleeves 502 that are threadably matched therewith, and the No. 1 threaded sleeves 502 are fixed to the support plate 6 via a connecting plate.

[0072] In the embodiment of the present invention, one of the first screw rods 5 is connected to the driving device motor, and when the motor is working, the output shaft of the motor drives one of the first screw rods 5 to rotate, and when one of the first screw rods 5 rotates, the transmission chain 501 drives the other first screw rod 5 to rotate, so that the two first screw rods 5 rotate synchronously;

[0073] When the No. 1 screw rod 5 rotates, the No. 1 screw sleeve 502 and the support plate 6 are driven to move toward or away from the testing mechanism 4 through the threaded engagement with the No. 1 screw sleeve 502;

[0074] The invention only shows a relatively low-cost implementation method. Of course, electric slide rails and other mechanisms can also be selected according to actual production needs to drive the support plate 6 to move toward / away from the testing mechanism 4. The invention does not specifically limit this.

[0075] The lifting member includes two No. 1 transmission frames 7 penetrating through one of the support plates 6 and slidably connected thereto, and the two No. 1 transmission frames 7 are fixed to a plurality of No. 2 mounting seats 801;

[0076] Two cylinders 19 are fixed on the other supporting plate 6 , and the movable rods of the two cylinders 19 are fixed to the two No. 1 transmission frames 7 .

[0077] In the embodiment of the present invention, when the two cylinders 19 are working, the two No. 1 transmission frames 7 are driven to rise / fall through their delivery output shafts, so that the multiple No. 2 mounting seats 801 are driven to rise / fall with the two cylinders 19;

[0078] This embodiment plays the role of synchronously driving the plurality of No. 2 mounting seats 801 to move toward / away from the No. 1 mounting seat 8, thereby achieving the effect of clamping / releasing the mounts.

[0079] Embodiment 2 is distinguished from Embodiment 1 in that: the first correction assembly includes three correction frames 10, and the three correction frames 10 are connected by a second connection plate 1402;

[0080] The three correction frames 10 are all fixed with a slider 1401 on one side facing the support plate 6, and the correction frames 10 slide in cooperation with the slide groove 14 provided on the support plate 6 through the slider 1401. The three correction frames 10 are provided with correction plates integrally formed therewith on both sides;

[0081] One side of the two correction frames 10 is rotatably mounted with a transmission plate 20, and the other end of the transmission plate 20 is rotatably connected to the first transmission frame 7;

[0082] The correction frame 10 is fixed with a correction plate arranged in a U shape.

[0083] In the embodiment of the present invention, when the first transmission frame 7 is vertically lowered, two of the correction frames 10 are driven to move horizontally through the transmission plate 20, and then when the correction frame 10 moves, the slider 1401 drives the remaining correction frames 10 to follow the movement, so that the multiple correction frames 10 can move horizontally synchronously;

[0084] The test motor body 11 is powered by the positive and negative pins at the tail end. When it is placed between the No. 1 mounting seat 8 and the No. 2 mounting seat 801, its position is random. Although the pin position of the test motor body 11 can be deliberately controlled when it is placed, there will still be a certain deviation after it is separated from the device / hand, resulting in the pin position cannot be determined when it is powered by the device, and then it can only be powered manually. In the prior art, it is powered manually by an alligator clip, and the process is relatively cumbersome;

[0085] See also Fig.11 When the test motor body 11 is placed in the No. 1 mounting seat 8 and the No. 2 mounting seat 801 by the device / manually, it will rotate at a certain angle when it is disengaged, and when the correction frame 10 moves horizontally, it will push the positive / negative poles of the pins of the test motor body 11, thereby rotating the pins to an upright state, so that it can be powered by the device;

[0086] Among them, when the pin position of the test motor body 11 is adjusted, it is completed before the test motor body 11 is clamped by the first mounting seat 8 and the second mounting seat 801.

[0087] A copper sheet is provided on the side of the correction plate of the correction frame 10 facing the pin of the test motor body 11, and the copper sheet is electrically connected to the power supply device through a wire.

[0088] In an embodiment of the present invention, when the correction frame 10 moves horizontally to correct the pins of the test motor body 11, it will drive it to rotate until the positive and negative pins are in a vertical state, and the positive and negative pins are in contact with the correction plate of the correction frame 10, so that the positive and negative pins of the test motor body 11 are in contact with the copper sheet, so as to achieve the power-on work while correcting and determining the position of the positive and negative pins of the test motor body 11 through the correction frame 10.

[0089] Embodiment 3 is distinguished from Embodiment 1 or / and Embodiment 2 in that: the second correction assembly comprises a second transmission frame 9 mounted on the first connecting plate 101, and a plurality of rack portions 901 are fixed on the second transmission frame 9;

[0090] A No. 2 screw rod 13 is rotatably mounted on the support plate 6 at the bottom of each of the No. 2 mounting seats 801. Both ends of the No. 2 screw rod 13 are sleeved with a No. 2 threaded sleeve 1301 threadedly matched therewith. A push plate 1302 is fixed on the No. 2 threaded sleeve 1301. Both sides of the support plate 6 are fixed with a No. 2 guide rod 1303 slidably matched with the No. 2 threaded sleeve 1301.

[0091] A transmission shaft perpendicular to the No. 2 screw rod 13 is rotatably installed at the bottom of the No. 2 screw rod 13, and a No. 1 gear 902 is coaxially fixed on the transmission shaft. The No. 1 gear 902 is meshed with the rack portion 901, and the transmission shaft is also connected to the No. 2 screw rod 13 through a bevel gear set 1304; the bevel gear set 1304 includes two bevel gears meshing with each other, and the two bevel gears are coaxially fixed to the No. 2 screw rod 13 and the transmission shaft respectively.

[0092] In the embodiment of the present invention, when the support plate 6 moves toward the test mechanism 4, it drives the No. 1 gear 902 to follow the movement. When the No. 1 gear 902 moves, it rotates by meshing with the rack part 901. When the No. 1 gear 902 rotates, it drives the transmission shaft to rotate. The rotation of the transmission shaft drives the No. 2 screw rod 13 to rotate through the bevel gear set 1304. When the No. 2 screw rod 13 rotates, the two No. 2 threaded sleeves 1301 are driven to move relative / oppositely by the thread cooperation with the No. 2 threaded sleeve 1301. When the two push plates 1302 move relative to each other, they will drive the test motor body 11 to move to the center position of the No. 2 mounting seat 801 and the No. 1 mounting seat 8, so that the No. 2 mounting seat 801 and the No. 1 mounting seat 8 clamp the test motor body 11 at its center position, so that the output shafts of multiple test motor bodies 11 are in a unified state, so that the output shafts of the test motor bodies 11 inserted into the test mechanism 4 will not be too long or too short.

[0093] See also Fig.12 , the figure shows two states of the test motor body 11, both of which will make the center position of the test motor body 11 coincide with the center line after being pushed by the push plate 1302;

[0094] See also Fig. 9 In this embodiment, there is a certain gap between the rack portion 901 and the second connecting plate 1402, so that there will be no interference between the two during movement;

[0095] It should also be noted that a mounting groove 12 is provided on the support plate 6, and the bevel gear set 1304 is located in the mounting groove 12;

[0096] It should be noted that the above-mentioned process of correcting the test motor body 11 is also completed before the test motor body 11 is clamped.

[0097] A support seat 17 is fixed on the first connecting plate 101, and a rack plate 16 is slidably mounted on the support seat 17;

[0098] The rack plate 16 is provided with a limiting groove 1604, and the limiting groove 1604 is slidably matched with a limiting block 1701 disposed in the support seat 17;

[0099] A No. 3 screw rod 15 is fixed to the side of the No. 2 transmission frame 9 facing the support seat 17, and a No. 3 threaded sleeve 1501 threadedly matched with the No. 3 screw rod 15 is sleeved on the No. 3 screw rod 15, and the No. 3 threaded sleeve 1501 is rotatably connected to the support seat 17, and a No. 2 gear 18 is coaxially fixed on the No. 3 threaded sleeve 1501, and the No. 2 gear 18 is meshed with the rack plate 16;

[0100] A third guide rod 1601 is fixed to one side of the support seat 17 and is slidably matched with the rack plate 16. A spring 1602 is sleeved on the third guide rod 1601.

[0101] A roller 1603 cooperating with the door 2 is rotatably mounted on the rack plate 16 away from the spring 1602 .

[0102] In the embodiment of the present invention, when the box door 2 is closed, the rack plate 16 is driven to move in a direction away from the box door 2 through the cooperation between the box door 2 and the roller 1603. When the box door 2 moves, the second gear 18 is driven to rotate by meshing with the second gear 18. When the second gear 18 rotates, the third threaded sleeve 1501 is driven to rotate. When the third threaded sleeve 1501 rotates, it drives the second transmission frame 9 to move horizontally through the thread cooperation with the third screw rod 15, and at the same time stretches the spring 1602, so that the spring 1602 reserves a certain amount of elastic potential energy. When the box door 2 is opened, the elastic potential energy stored in the spring 1602 is released to drive the rack plate 16 to move back and forth, and the corresponding second transmission frame 9 moves in the opposite direction.

[0103] See also Figure 6 , the No. 2 screw rod 13 is at the center position of the No. 2 mounting seat 801, and the corresponding No. 1 gear 902 and rack part 901 are also at the center position of the No. 2 mounting seat 801, and the rack part 901 being in this position will affect the placement of the test motor body 11 between the No. 1 mounting seat 8 and the No. 2 mounting seat 801. The present invention is achieved through the above-mentioned movement state that when the box door 2 is closed, the No. 2 transmission frame 9 and the rack part 901 are driven to move toward the support seat 17, so that the rack part 901 and the No. 1 gear 902 are disengaged and give way at the same time, so that there is no obstruction when the test motor body 11 is placed between the No. 1 mounting seat 8 and the No. 2 mounting seat 801, and when the box door 2 is closed, the No. 2 transmission frame 9 and the rack part 901 are driven to move in the opposite direction away from the support seat 17, and the rack part 901 is meshed with the No. 1 gear 902 again.

[0104] The present invention also provides a durability test method for a stepper motor, and the durability test device for a stepper motor used comprises the following steps:

[0105] Step 1: Place the test motor body 11 between the first mounting seat 8 and the second mounting seat 801, and then move it toward the test mechanism 4 through the pusher support plate 6;

[0106] Step 2: When the support plate 6 moves, the position of the test motor body 11 is adjusted by the first correction component and the second correction component, and the circuit is connected, and then the test motor body 11 is clamped and fixed by driving the first mounting seat 8 to stand upright and descend;

[0107] Step three, after the support plate 6 moves to the end of the stroke, the output shaft of the test motor body 11 is inserted into the test port of the test mechanism 4 for testing.

[0108] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0109] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A durability test device for a stepper motor, characterized in that: include: A test box (1), the test box (1) comprising a top box and a bottom box, the top box and the bottom box being fixed via a first connecting plate (101), a leg being fixed to the bottom of the bottom box, and a box door (2) being connected to one side of the top box; Two support plates (6), the two support plates (6) being fixed to each other via a support rod (601), and a support plate (6) located at the ground is slidably mounted on the first connecting plate (101) via a pushing member; A plurality of No. 2 mounting seats (801) are fixed at equal intervals on the two support plates (6), a No. 1 guide rod (803) is fixed to the top four corners of the No. 2 mounting seat (801), a No. 1 mounting seat (8) is vertically and slidably mounted on the No. 1 guide rod (803), the No. 1 mounting seat (8) is connected to a lifting member installed on the support plate (6), and the lifting member is connected to a No. 1 correction component installed on the support plate (6); A second correction component, the second correction component being mounted on the bottom of the two support plates (6); A drawer (3) is slidably mounted on the bottom box, a processing device (301) and a control module (302) are fixed in the drawer (3), the processing device (301) and the control module (302) are electrically connected via a wire, a testing mechanism (4) is fixed on the processing device (301), and the testing mechanism (4) and the processing device (301) are electrically connected via a wire; The pushing member comprises two No. 1 screw rods (5) rotatably mounted on the No. 1 connecting plate (101), and the two No. 1 screw rods (5) are connected via a transmission chain (501); The two No. 1 screw rods (5) are both sleeved with No. 1 threaded sleeves (502) threadably matched therewith, and the No. 1 threaded sleeves (502) are fixed to the support plate (6) via a connecting plate; The lifting member comprises two No. 1 transmission frames (7) penetrating one of the support plates (6) and slidably connected thereto, and the two No. 1 transmission frames (7) are fixed to a plurality of No. 2 mounting seats (801); Two cylinders (19) are fixed on the other support plate (6), and the movable rods of the two cylinders (19) are fixed to the two No. 1 transmission frames (7); The first correction assembly comprises three correction frames (10), and the three correction frames (10) are connected via a second connection plate (1402); The three correction frames (10) are all fixed with a slider (1401) on one side facing the support plate (6); the correction frames (10) are slidably matched with the slide groove (14) provided on the support plate (6) through the slider (1401); and correction plates integrally formed therewith are provided on both sides of the three correction frames (10); A transmission plate (20) is rotatably mounted on one side of the two correction frames (10), and the other end of the transmission plate (20) is rotatably connected to the first transmission frame (7); Wherein, the correction frame (10) is fixed with a correction plate arranged in a U shape; A copper sheet is provided on the side of the correction plate of the correction frame (10) facing the pin of the test motor body (11), and the copper sheet is electrically connected to the power supply device via a wire; The second correction assembly comprises a second transmission frame (9) mounted on the first connection plate (101), and a plurality of rack portions (901) are fixed on the second transmission frame (9); A No. 2 screw rod (13) is rotatably mounted on the support plate (6) at the bottom of each of the plurality of No. 2 mounting seats (801), and both ends of the No. 2 screw rod (13) are sleeved with a No. 2 threaded sleeve (1301) threadedly matched therewith, a push plate (1302) is fixed on the No. 2 threaded sleeve (1301), and a No. 2 guide rod (1303) slidably matched with the No. 2 threaded sleeve (1301) is fixed on both sides of the support plate (6); A transmission shaft perpendicular to the No. 2 screw rod (13) is rotatably mounted at the bottom of the No. 2 screw rod (13), a No. 1 gear (902) is coaxially fixed on the transmission shaft, the No. 1 gear (902) is meshed with the rack portion (901), and the transmission shaft is also connected to the No. 2 screw rod (13) via a bevel gear set (1304).

2. A durability testing device for a stepper motor according to claim 1, characterized in that: A support seat (17) is fixed on the first connecting plate (101), and a rack plate (16) is slidably mounted on the support seat (17); A limiting groove (1604) is provided on the rack plate (16), and the limiting groove (1604) is slidably matched with a limiting block (1701) provided in the support seat (17); A No. 3 screw rod (15) is fixed to the side of the No. 2 transmission frame (9) facing the support seat (17); a No. 3 threaded sleeve (1501) threadedly matched with the No. 3 screw rod (15) is sleeved on the No. 3 screw rod (15); the No. 3 threaded sleeve (1501) is rotatably connected to the support seat (17); a No. 2 gear (18) is coaxially fixed to the No. 3 threaded sleeve (1501); the No. 2 gear (18) is meshed with the rack plate (16); A third guide rod (1601) that is slidably matched with the rack plate (16) is fixed to one side of the support seat (17), and a spring (1602) is sleeved on the third guide rod (1601); A roller (1603) that cooperates with the box door (2) is rotatably mounted on the side of the rack plate (16) away from the spring (1602).

3. A durability testing device for a stepper motor according to claim 2, characterized in that: A temperature test piece (802) is fixed on the first mounting seat (8), and the temperature test piece (802) is electrically connected to the processing device (301) via a wire.

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