A full-automatic motor no-load and locked-rotor current and torque performance testing device

Abstract

The application relates to a full-automatic motor no-load and locked-rotor current and torque performance testing device which comprises a workbench, a placing table, a buffer assembly and a power assembly; the placing table and the power assembly are connected to the workbench; the placing table is used for placing a motor to be tested; the first end of the buffer assembly is connected with the output shaft of the power assembly, the second end of the buffer assembly is used for connecting the rotating shaft of the motor to be tested placed on the placing table, so that the output shaft and the rotating shaft are transmissionally connected through the buffer assembly, and the output shaft and the rotating shaft can transmit torque to each other; the buffer assembly can elastically stretch and contract in the first direction, so that the second end reciprocates relative to the first end. When the motor to be tested is installed, the rotating shaft of the motor to be tested is not needed, and the testing efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of testing equipment technology and relates to a fully automatic motor no-load and resistance current and torque performance testing device. Background Technology

[0002] Motor performance testing is a core part of modern industry, running through the entire life cycle of motor research and development, production and application. Its importance is becoming increasingly prominent with the strengthening of the global trend of electrification and intelligence.

[0003] The current fully automatic motor no-load and resistance current and torque performance testing device has the following process: the motor under test is placed on the testing equipment, and the output shaft of the motor under test is connected to the servo motor of the testing equipment during the placement process. Specifically, the output shaft of the motor under test is inserted into the groove on the output shaft of the servo motor to temporarily fix the motor under test. The servo motor is started to drive the motor under test to rotate. After the performance test, the motor is removed from the back of the testing equipment and another motor under test is placed for testing.

[0004] Existing technology requires aligning the output shaft of the motor under test with the groove of the servo motor's output shaft before placing the motor under test inside the testing equipment, which is cumbersome. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a motor performance testing device so as to facilitate the installation of a motor in the testing device.

[0006] To solve the above-mentioned technical problems, this application provides a fully automatic motor no-load and resistance current and torque performance testing device, including a workbench, a mounting platform, a buffer assembly, and a power assembly;

[0007] Both the mounting platform and the power assembly are connected to the workbench;

[0008] The mounting platform is used to place the motor to be tested.

[0009] The first end of the buffer assembly is connected to the output shaft of the power assembly, and the second end of the buffer assembly is used to connect to the rotating shaft of the motor under test placed on the mounting platform, so that the output shaft and the rotating shaft are connected through the buffer assembly so that the output shaft and the rotating shaft can transmit torque to each other.

[0010] The buffer component is elastically expandable and contractable along a first direction, so that the second end reciprocates relative to the first end.

[0011] Optionally, the buffer assembly includes a first elastic element, a connector, and a connecting shaft;

[0012] The connecting shaft is provided with a mating groove for the motor under test to be inserted, so that torque can be transmitted through the side wall of the mating groove and the rotating shaft of the motor under test;

[0013] The connector is connected to the output shaft of the power assembly, and the connecting shaft is used to connect to the rotating shaft of the motor under test;

[0014] The connector has a first mating structure, and the connecting shaft has a second mating structure. The first mating structure and the second mating structure are mated to allow torque transmission between them.

[0015] The first elastic element is disposed between the connector and the connecting shaft, and is capable of elastic deformation in the first direction to allow the buffer assembly to elastically expand and contract.

[0016] Optionally, the connector includes a first connecting portion and a second connecting portion arranged along the first direction;

[0017] The first connecting part connects the output shaft of the power assembly and the second connecting part;

[0018] The second connecting part is provided with a mounting hole, which is a stepped hole that penetrates the second connecting part along the first direction;

[0019] The connecting shaft is disposed in the mounting hole and can reciprocate relative to the second connecting part along the first direction;

[0020] Furthermore, when the connecting shaft moves along the direction from the first connecting part to the second connecting part, it can abut against the stepped surface of the mounting hole;

[0021] The first elastic element is disposed in the cavity, and its two ends respectively abut against the first connecting part and the connecting shaft;

[0022] The first mating structure is a first rotation limiting surface disposed on the inner sidewall of the mounting hole;

[0023] The second mating structure is a second rotation limiting surface disposed on the outer side wall of the connection.

[0024] Optionally, the placement platform includes a platform panel, a support mechanism, and a second elastic element;

[0025] The table panel is connected to the workbench via the support mechanism and can reciprocate relative to the support mechanism along the first direction to move closer to or further away from the workbench.

[0026] When the table panel is close to the worktable, it can apply force to the second elastic element, causing the second elastic element to undergo elastic deformation.

[0027] Optionally, the support mechanism includes support legs and connecting bolts;

[0028] In the first direction, the two ends of the support leg are respectively connected to the worktable and the studs of the connecting bolt;

[0029] The tabletop is provided with a connecting hole; the connecting hole penetrates the tabletop in the first direction.

[0030] The stud of the connecting bolt passes through the connecting hole; the bolt head of the connecting bolt is located on the side of the platform away from the support leg;

[0031] When the platform is away from the workbench, it can abut against the bolt head of the connecting bolt;

[0032] The second elastic element is sleeved on the stud of the connecting bolt and abuts against the support leg and the platform.

[0033] The number of the connecting bolts, the connecting holes, and the second elastic element are all multiple, and they correspond one-to-one;

[0034] The stud of the connecting bolt passes through the corresponding connecting hole;

[0035] The second elastic element is sleeved on the stud of the corresponding connecting bolt;

[0036] The connecting hole is a stepped hole; the second elastic element abuts against the stepped surface of the connecting hole.

[0037] Optionally, the platform is provided with a clearance hole that penetrates the platform in the first direction, and the clearance hole is used to allow the shaft of the motor under test to pass through to connect to the buffer assembly;

[0038] The platform is provided with a limiting structure, which is used to limit the placement position of the motor under test on the platform.

[0039] Optionally, the mounting platform further includes a probe assembly, which includes a probe, a reciprocating component, and a mounting component;

[0040] The reciprocating component connects the worktable and the mounting component, and the probe is connected to the mounting component;

[0041] The reciprocating component is used to drive the mounting component to reciprocate along a first direction, so that the probe can move closer to or away from the platform.

[0042] When the probe is close to the platform, it can be inserted into the terminal of the motor under test placed on the platform.

[0043] Optionally, the motor performance testing device further includes a support assembly and a top plate assembly, wherein the top plate assembly is connected to the workbench via the support assembly;

[0044] In the first direction, the top plate assembly is located on the side of the mounting platform opposite to the power assembly;

[0045] The top plate assembly can approach the mounting platform along the first direction to press the motor under test placed on the mounting platform;

[0046] The top plate assembly includes a linear displacement module and a pressing component;

[0047] The linear displacement module is fixed to the support assembly;

[0048] The pressing component is connected to the linear displacement module;

[0049] The linear displacement module is used to drive the pressing component to approach and press against the motor under test;

[0050] The pressing component is provided with a contoured groove adapted to the motor under test.

[0051] Optionally, the ceiling assembly further includes a support plate and a plurality of first guide columns, the linear displacement module is connected to the support plate, and the pressing member is fixed to the side of the support plate near the mounting platform;

[0052] The first guide post is fixed on the worktable, extends along a first direction, and passes through the bearing plate.

[0053] The ceiling assembly also includes a plurality of second guide posts, which are fixed to the support plate and are oriented toward the mounting platform along the first direction.

[0054] The platform is provided with a plurality of guide holes that extend through in a first direction, and a bushing is provided in the guide hole, and each second guide post can be inserted into the bushing.

[0055] Optionally, the top plate assembly further includes a gold finger and a third elastic element, the third elastic element being able to extend and retract along the first direction, one end of the third elastic element being fixedly connected to the support plate, and the other end of the third elastic element being connected to the gold finger;

[0056] In the first direction, the gold finger is facing the probe.

[0057] The fully automatic motor no-load and resistance current and torque performance testing device of this application places the motor on the mounting platform before testing, with the motor shaft facing downwards, without needing to ensure that the shaft of the motor under test and the mating groove on the second end of the buffer assembly are aligned. When placing the motor under test, if the shaft of the motor under test is aligned and inserted into the mating groove, the second end does not need to move towards the first end; if the shaft of the motor under test is not aligned and inserted into the mating groove, the shaft of the motor under test placed on the mounting platform is pressed downwards to move the second end towards the first end. After the motor under test is fixed, the power assembly is activated and rotated 90 degrees. During the rotation, once the mating groove on the second end and the shaft of the motor under test are aligned, the elastic extension and contraction will drive the second end to move towards the shaft of the motor under test, so as to insert the shaft of the motor under test into the mating groove, thereby improving the testing efficiency. Attached Figure Description

[0058] Figure 1 This is an overall schematic diagram of a fully automatic motor no-load and resistance current and torque performance testing device provided in an embodiment of this application;

[0059] Figure 2 This is a schematic diagram of the mounting platform for a fully automatic motor no-load and resistance current and torque performance testing device provided in one embodiment of this application;

[0060] Figure 3 This is an exploded schematic diagram of the mounting platform of the fully automatic motor no-load and resistance current and torque performance testing device provided in one embodiment of this application;

[0061] Figure 4 This is a partially exploded and partially cross-sectional schematic diagram of the buffer mechanism of the fully automatic motor no-load and resistance current and torque performance testing device provided in an embodiment of this application;

[0062] Figure 5 This is a partial exploded and partial cross-sectional view of a fully automatic motor no-load and resistance current and torque performance testing device provided in an embodiment of this application;

[0063] Figure 6 This is a schematic diagram showing the position of the probe assembly of a fully automatic motor no-load and resistance current and torque performance testing device provided in an embodiment of this application;

[0064] Figure 7 This is a schematic diagram of the cooperation between the probe assembly and the motor under test of the fully automatic motor no-load and resistance current and torque performance testing device provided in an embodiment of this application;

[0065] Figure 8 This is a schematic diagram of the top plate assembly of a fully automatic motor no-load and resistance current and torque performance testing device provided in one embodiment of this application.

[0066] The reference numerals in the accompanying drawings are as follows:

[0067] 1. Workbench; 2. Mounting platform; 21. Platform panel; 211. Clearance hole; 212. Limiting structure; 22. Second elastic element; 23. Support mechanism; 231. Support leg; 232. Connecting bolt; 233. Connecting hole; 24. Probe assembly; 241. Probe; 242. Reciprocating component; 243. Mounting component; 3. Buffer assembly; 31. Connecting shaft; 311. Mating groove; 32. Connecting component; 321. First connecting part; 322. Second connecting part; 323. Mounting hole; 33. First elastic element; 4. Power assembly; 51. Support assembly; 52. Top plate assembly; 521. Pressing component; 522. Linear displacement module; 523. Bearing plate; 524. First guide post; 525. Second guide post; 526. Bushing; 527. Gold finger; 528. Third elastic element; 9. Motor under test. Detailed Implementation

[0068] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0069] See Figures 1 to 8 An embodiment of this application provides a fully automatic motor no-load and resistance current and torque performance testing device, including a workbench 1, a mounting platform 2, a buffer assembly 3, and a power assembly 4; the mounting platform 2 and the power assembly 4 are both connected to the workbench 1; the mounting platform 2 is used to place the motor 9 under test; the first end of the buffer assembly 3 is connected to the output shaft of the power assembly 4, and the first end of the buffer assembly 3 and the power assembly 4 are connected by bolts; the second end of the buffer assembly 3 is used to connect to the rotating shaft of the motor 9 under test placed on the mounting platform 2, so that the output shaft and the rotating shaft are connected by transmission through the buffer assembly 3, so that the output shaft and the rotating shaft can transmit torque to each other; the buffer assembly 3 can elastically extend and retract in a first direction, so that the second end reciprocates relative to the first end.

[0070] Reference Figure 1 and Figure 2In this embodiment, the workbench 1 is a square shell structure, the mounting platform 2 is installed on the upper surface of the workbench 1, and the power component 4 is an 1100W servo motor. The servo motor is fixed inside the square shell of the workbench 1, and the upper surface of the workbench 1 is provided with a hole for the output shaft of the power component 4 to pass through. Since the fully automatic motor no-load and resistance current and torque performance testing device needs to test multiple motors 9 in the same batch in sequence, the buffer component 3 and the shaft of the motor 9 under test are generally detachably connected. In this embodiment, the shaft of the motor 9 under test and the second end of the buffer component 3 are inserted into each other. Specifically, the shaft of the motor 9 under test is milled flat on both sides, and a square mating groove 311 is provided on the second end of the buffer component 3. The double-milled flat area of ​​the motor 9 under test is inserted into the mating groove 311 at the second end, thereby enabling torque transmission between the motor 9 under test and the buffer component 3.

[0071] Before testing, place the motor on the mounting platform 2 with its shaft facing downwards. It is not necessary to ensure that the shaft of the motor under test 9 is aligned with the mating groove 311 on the second end of the buffer assembly 3. When placing the motor under test 9, if the shaft of the motor under test 9 is aligned and inserted into the mating groove 311, the second end does not need to move towards the first end. If the shaft of the motor under test 9 is not aligned and inserted into the mating groove 311, press the second end downwards with the shaft of the motor under test 9 placed on the mounting platform 2, causing the second end to move towards the first end. After the motor under test 9 is fixed, start the power assembly 4 and rotate it 90 degrees. During rotation, once the mating groove 311 on the second end aligns with the shaft of the motor under test 9, the elastic extension and contraction will cause the second end to move towards the shaft of the motor under test 9, inserting the shaft of the motor under test 9 into the mating groove 311.

[0072] Compared with the prior art, this embodiment simplifies the installation process by eliminating the need to align the motor under test 9 and the buffer component 3 when installing the motor under test 9.

[0073] Reference Figure 3 As an example, the buffer assembly 3 includes a first elastic element 33, a connector 32, and a connecting shaft 31; a mating groove 311 for the motor under test 9 to be inserted is provided on the connecting shaft 31 so as to transmit torque through the side wall of the mating groove 311 and the rotating shaft of the motor under test 9; the connector 32 is connected to the output shaft of the power assembly 4, and the connecting shaft 31 is used to connect the rotating shaft of the motor under test 9; the connector 32 has a first mating structure, and the connecting shaft 31 has a second mating structure, the first mating structure and the second mating structure are mated to transmit torque between them; the first elastic element 33 is provided between the connector 32 and the connecting shaft 31, and can elastically deform in the first direction so that the buffer assembly 3 can elastically expand and contract.

[0074] In this embodiment, the first elastic element 33 is a compression spring, the first mating structure is a square hole, and the second mating mechanism is a connecting shaft 31, which is a square shaft. When the connecting shaft 31 is inserted into the square hole, the first mating mechanism and the second mating mechanism are able to transmit torque.

[0075] In other embodiments, the second mating mechanism is a spline machined on the connecting shaft 31, making the connecting shaft 31 a spline shaft, and the first mating mechanism is a shaft hole adapted to the spline shaft.

[0076] In this embodiment, the connecting shaft 31 and the connecting piece 32 achieve torque transmission through the first and second mating mechanisms, thereby realizing torque transmission in the motor 9 under test and the power assembly 4. The two ends of the first elastic member 33 are respectively connected to the connecting piece 32 and the connecting shaft 31. The extension and retraction direction of the first elastic member 33 is the same as the axial direction of the connecting shaft 31, that is, the first direction.

[0077] Reference Figure 3 As an example, the connector 32 includes a first connecting portion 321 and a second connecting portion 322 arranged along the first direction; the first connecting portion 321 connects the output shaft of the power assembly 4 and the second connecting portion 322; the second connecting portion 322 is provided with a mounting hole 323, which is a stepped hole penetrating the second connecting portion 322 along the first direction; the connecting shaft 31 is disposed in the mounting hole 323 and can reciprocate relative to the second connecting portion 322 along the first direction; and when the connecting shaft 31 moves along the direction from the first connecting portion 321 to the second connecting portion 322, it can abut against the stepped surface of the mounting hole 323; the first elastic member 33 is disposed in the cavity, and the two ends of the first elastic member 33 abut against the first connecting portion 321 and the connecting shaft 31 respectively; the first mating structure is a first rotation limiting surface disposed on the inner sidewall of the mounting hole 323; the second mating structure is a second rotation limiting surface disposed on the outer sidewall of the connector.

[0078] In this embodiment, the lower end of the first connecting part 321 and the power component 4 are fixedly connected by bolts, and the second connecting part 322 and the second connecting part 322 are also fixedly connected by bolts, so that the first connecting part 321, the second connecting part 322 and the power component 4 all rotate synchronously at the same speed. Combined with the first and second mating mechanisms described above, the connecting shaft 31 and the second connecting part 322 achieve torque transmission. In this embodiment, the larger inner diameter hole of the mounting hole 323 faces downward, and the smaller inner diameter hole faces upward. This makes the stepped surface of the mounting hole 323 face the second connecting part 322. In this embodiment, the connecting shaft 31 is a stepped shaft. The shaft with the larger outer diameter is closer to the power component 4, and the shaft with the smaller outer diameter is closer to the motor 9 under test. The shaft with the larger outer diameter of the connecting shaft 31 is in a stop-fitting engagement with the stepped surface of the mounting hole 323 to prevent the connecting shaft 31 from falling out of the mounting hole 323.

[0079] In other embodiments, if the shaft of the motor under test 9 does not protrude far from the housing of the motor under test 9, a first elastic element 33 with a smaller elastic force can be selected so that the limit of the vertical displacement of the connecting shaft 31 does not exceed the mounting hole 323. That is, since the connecting shaft 31 moves up and down with a small distance, it has no tendency to disengage from the mounting hole 323. Therefore, it is not necessary to select a stepped shaft-shaped connecting shaft 31. In this case, the stepped shaft is a square shaft.

[0080] Reference Figure 2 and Figure 8 As an example, the motor performance testing device further includes a support assembly 51 and a top plate assembly 52, wherein the top plate assembly 52 is connected to the workbench 1 via the support assembly 51;

[0081] In the first direction, the top plate assembly 52 is located on the side of the mounting platform 2 away from the power assembly; the top plate assembly 52 can approach the mounting platform 2 along the first direction to press the motor under test 9 placed on the mounting platform 2; the top plate assembly 52 includes a linear displacement module 522 and a pressing member 521; the linear displacement module 522 is fixed on the support assembly 51; the pressing member 521 is connected to the linear displacement module 522; the linear displacement module 522 is used to drive the pressing member 521 to approach and press the motor under test 9; the pressing member 521 is provided with a contoured groove adapted to the motor under test 9.

[0082] In this embodiment, the top plate assembly 52 is spaced above the mounting platform 2. The support assembly 51 is a shell structure composed of sheet metal parts and is fixed to the upper surface of the workbench 1. The linear displacement module 522 is a cylinder and is fixed to the support assembly 51. The pressing member 521 is block-shaped and located above the mounting platform 2. Under the drive of the linear displacement module 522, the pressing member 521 moves towards the mounting platform 2 and clamps the motor 9 under test located between the two together with the mounting platform 2. The shape of the contour groove is determined according to the shape of the part of the pressing member 521 that presses the motor 9 under test.

[0083] Reference Figure 5 As an example, the placement platform 2 includes a platform 21, a support mechanism 23, and a second elastic element 22; the platform 21 is connected to the workbench 1 through the support mechanism 23 and can reciprocate relative to the support mechanism 23 in the first direction to move closer to or further away from the workbench 1; when the platform 21 is close to the workbench 1, it can apply force to the second elastic element 22, causing the second elastic element 22 to undergo elastic deformation.

[0084] In this embodiment, after the motor 9 to be tested is placed on the mounting platform 2, the top plate assembly 52 moves downward until it clamps the motor 9 to be tested with the mounting platform 2. During the clamping process, the second elastic member 22 is compressed and the platform panel 21 moves downward, thereby avoiding hard contact between the pressing member 521 and the motor 9 to be tested. The extension and retraction of the second elastic member 22 plays a buffering role.

[0085] As an example, the support mechanism 23 includes a support leg 231 and a connecting bolt 232; in the first direction, the two ends of the support leg 231 are respectively connected to the workbench 1 and the stud of the connecting bolt 232; the table panel 21 is provided with a connecting hole 233; the connecting hole 233 penetrates the table panel 21 in the first direction; the stud of the connecting bolt 232 passes through the connecting hole 233; the bolt head of the connecting bolt 232 is located on the side of the table panel 21 away from the support leg; when the table surface is away from the workbench 1, it can abut against the bolt head of the connecting bolt 232. The second elastic element 22 is sleeved on the stud of the connecting bolt 232 and abuts against the support leg 231 and the platform 21; there are multiple connecting bolts 232, connecting holes 233 and the second elastic element 22, and they correspond one-to-one; the stud of the connecting bolt 232 passes through the corresponding connecting hole 233; the second elastic element 22 is sleeved on the stud of the corresponding connecting bolt 232; the connecting hole 233 is a stepped hole; the second elastic element 22 abuts against the stepped surface of the connecting hole 233.

[0086] In this embodiment, the structure of the support legs 231 is different. Two of them are rod-shaped support legs 231 and the other is a plate-shaped support leg 231. The three support legs 231 are spaced apart between the table panel 21 and the workbench 1. The connecting bolts 232 connect the table panel 21 and the support legs 231. In this embodiment, the second elastic element 22 is a spring, which is directly sleeved on the connecting bolts 232.

[0087] In this embodiment, the connecting hole 233 is a stepped hole. The hole with the larger inner diameter of the connecting hole 233 is located below the hole with the smaller inner diameter, so that the stepped surface of the connecting hole 233 faces downward. The upper end of the second elastic member 22 abuts against the stepped surface of the connecting hole 233, and the lower end of the second elastic member 22 abuts against the support leg 231.

[0088] As an example, the platform 21 is provided with a clearance hole 211, which penetrates the platform 21 in the first direction. The clearance hole 211 is used to allow the shaft of the motor under test 9 to pass through to connect to the buffer assembly 3. The platform 21 is provided with a limiting structure 212, which is used to limit the placement position of the motor under test 9 on the platform 21.

[0089] The clearance hole 211 penetrates the platform 21 in the vertical direction. The diameter of the clearance hole 211 is larger than the output shaft of the motor under test 9 but smaller than the outer diameter of the housing of the motor under test 9. The limiting structure 212 on the platform 21 is formed by the upward protrusions of the left and right sides of the platform 21. After the motor under test 9 is placed into the mounting platform 2, the left and right sides of the motor under test 9 abut against the limiting structure 212, thus preventing the left and right sides of the motor under test 9 from moving. The left and right direction is perpendicular to the vertical direction.

[0090] Reference Figure 6 and Figure 7 As an example, the mounting platform 2 further includes a probe assembly 24, which includes a probe 241, a reciprocating component 242, and a mounting component 243. The reciprocating component 242 connects the workbench 1 and the mounting component 243, and the probe 241 is connected to the mounting component 243. The reciprocating component 242 is used to drive the mounting component 243 to reciprocate along a first direction so that the probe 241 can approach or move away from the platform panel 21. When the probe 241 approaches the platform panel 21, it can be inserted into the terminal of the motor under test 9 placed on the platform panel 21. In this embodiment, the terminal of the motor under test 9 is provided with multiple contacts, and the probe 241 contacts the contacts to supply power and transmit signals.

[0091] In this embodiment, the reciprocating component 242 is a cylinder, which is mounted on the upper surface of the workbench 1. The mounting component 243 has a U-shaped structure, and its lower side is fixed to the reciprocating component 242. The probe 241 is mounted on the mounting component 243. During testing, the reciprocating component 242 moves upward, causing the mounting component 243 and the probe 241 to move upward. After the probe 241 moves upward, it contacts the contact point on the terminal of the motor under test 9. After the test is completed, the probe 241 moves downward and disengages from the terminal of the motor under test 9.

[0092] Reference Figure 8 As an example, the top plate assembly 52 further includes a support plate 523 and a plurality of first guide posts 524. The linear displacement module 522 is connected to the support plate 523, and the pressing member 521 is fixed to the side of the support plate 523 near the mounting platform 2. The first guide posts 524 are fixed on the worktable 1, extend along a first direction, and pass through the support plate 523. In this embodiment, the support plate 523 is provided with guide holes, and linear bearings are installed in the guide holes. The first guide posts 524 are slidably engaged with the linear bearings, and the first guide posts 524 are used to guide the support plate 523 in the vertical direction.

[0093] Similarly, the top plate assembly 52 also includes a plurality of second guide posts 525, which are fixed on the support plate 523 and face the mounting platform 2 along the first direction; the platform panel 21 is provided with a plurality of guide holes that penetrate along the first direction, and bushings 526 are provided in the guide holes, and each second guide post 525 can be inserted into the bushing 526.

[0094] In this embodiment, when the second guide post 525 moves downward toward the mounting platform 2, the second guide post 525 enters the bushing 526 and moves up and down along the bushing 526, so that the second guide post 525 enters the bushing 526.

[0095] As an example, the top plate assembly 52 also includes a gold finger 527 and a third elastic member 528, the third elastic member 528 being able to extend and retract along the first direction, one end of the third elastic member being fixedly connected to the support plate 523, and the other end of the third elastic member being connected to the gold finger 527; in the first direction, the gold finger 527 is facing the probe 241.

[0096] In this embodiment, the third elastic element 528 is the gold finger 527 located directly above the probe 241. When the gold finger 527 moves downward with the carrier plate 523, the gold finger 527 contacts the terminal of the motor 9 under test. The third elastic element 528 provides pressing pressure to the gold finger 527, so that the terminal of the motor 9 under test is stably in contact with the probe 241. The third elastic element 528 is a positioning pin of model GP-2T, and its stroke range is selected according to the actual situation.

[0097] Its working mode is divided into two types. The first working mode tests the static torque of the motor under test 9. The test process is as follows:

[0098] 1. Place the motor to be tested 9 on the mounting platform 2, and move the top plate assembly 52 downward to press the motor to be tested 9;

[0099] 2. The servo motor rotates under load so that it can automatically connect with the shaft of the motor 9 under test;

[0100] 3. The motor under test 9 rotates 90 degrees after being powered on and then stops.

[0101] 4. Write the set first segment of 0.8Nm load torque, and obtain the coil current Q value and the total current of the drive board of the motor under test 9 by reading the drive board. The sampling time is 5 seconds and the sampling frequency is 50ms.

[0102] 5. After the first test is completed, the second test of 1.6Nm load torque is started. After obtaining the above parameters, the parameters obtained from the first and second tests are compared with the rated upper and lower limits of the motor under test 9 to determine whether the performance of the motor under test 9 is qualified.

[0103] 6. The Q value and drive board current value read from the test are stored in the data buffer of the fully automatic motor no-load and resistance current and torque performance test device, and can be read by the host computer and uploaded to the server.

[0104] The second working mode is used to test the dynamic torque of the motor under test 9. The test process is as follows:

[0105] 1. Place the motor to be tested 9 on the mounting platform 2, and move the top plate assembly 52 downward to press the motor to be tested 9;

[0106] 2. The servo motor rotates so that it can automatically connect with the shaft of the motor under test 9;

[0107] 3. The motor under test 9 rotates 90 degrees after being powered on and then stops.

[0108] 4. Write the set first segment of 0.8Nm load torque, and obtain the coil current Q value and the total current of the drive board of the motor under test 9 in real time by reading the drive board on the motor under test 9. The sampling time is 5 seconds and the sampling frequency is 50ms.

[0109] 5. With the shaft of the motor under test 9 stationary, the servo motor rotates continuously in the positive direction while simultaneously recording the second load torque of 1.6 Nm, and the above data is collected.

[0110] 6. The shaft of the motor under test 9 is stationary, while the servo motor rotates continuously in the opposite direction and writes a load torque of -0.8Nm, and the above data is collected;

[0111] 7. The shaft of the motor under test 9 is stationary, while the servo motor rotates continuously in the opposite direction and writes a load torque of -1.6Nm, and the above data is collected;

[0112] 8. After completing the above four tests and obtaining the above parameters, compare the parameters obtained from the first, second, third, and fourth tests with the rated upper and lower limits of the motor under test 9 to determine whether the performance of the motor under test 9 is qualified.

[0113] 9. The Q value and driver board current value read from each test segment are stored in the data buffer, which can be read by the host computer and uploaded to the server.

[0114] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fully automatic test device for the no-load and resistance current and torque performance of a motor, characterized in that, Includes workbench, mounting platform, buffer assembly, and power assembly; Both the mounting platform and the power assembly are connected to the workbench; The mounting platform is used to place the motor to be tested. The first end of the buffer assembly is connected to the output shaft of the power assembly, and the second end of the buffer assembly is used to connect to the rotating shaft of the motor under test placed on the mounting platform, so that the output shaft and the rotating shaft are connected through the buffer assembly so that the output shaft and the rotating shaft can transmit torque to each other. The buffer component is elastically expandable and contractable along a first direction, so that the second end reciprocates relative to the first end.

2. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 1, characterized in that, The buffer assembly includes a first elastic element, a connector, and a connecting shaft; The connecting shaft is provided with a mating groove for the motor under test to be inserted, so that torque can be transmitted through the side wall of the mating groove and the rotating shaft of the motor under test; The connector is connected to the output shaft of the power assembly, and the connecting shaft is used to connect to the rotating shaft of the motor under test; The connector has a first mating structure, and the connecting shaft has a second mating structure. The first mating structure and the second mating structure are mated to allow torque transmission between them. The first elastic element is disposed between the connector and the connecting shaft, and is capable of elastic deformation in the first direction to allow the buffer assembly to elastically expand and contract.

3. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 2, characterized in that, The connector includes a first connecting portion and a second connecting portion arranged along the first direction; The first connecting part connects the output shaft of the power assembly and the second connecting part; The second connecting part is provided with a mounting hole, which is a stepped hole that penetrates the second connecting part along the first direction; The connecting shaft is disposed in the mounting hole and can reciprocate relative to the second connecting part along the first direction; Furthermore, when the connecting shaft moves along the direction from the first connecting part to the second connecting part, it can abut against the stepped surface of the mounting hole; The first elastic element is disposed in the cavity, and its two ends respectively abut against the first connecting part and the connecting shaft; The first mating structure is a first rotation limiting surface disposed on the inner sidewall of the mounting hole; The second mating structure is a second rotation limiting surface disposed on the outer side wall of the connection.

4. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 1, characterized in that, The placement platform includes a platform panel, a support mechanism, and a second elastic element; The table panel is connected to the workbench via the support mechanism and can reciprocate relative to the support mechanism along the first direction to move closer to or further away from the workbench. When the table panel is close to the worktable, it can apply force to the second elastic element, causing the second elastic element to undergo elastic deformation.

5. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 4, characterized in that, The support mechanism includes support legs and connecting bolts; In the first direction, the two ends of the support leg are respectively connected to the worktable and the stud of the connecting bolt; The tabletop is provided with a connecting hole; the connecting hole penetrates the tabletop in the first direction. The stud of the connecting bolt passes through the connecting hole; the bolt head of the connecting bolt is located on the side of the platform away from the support leg; When the platform is away from the workbench, it can abut against the bolt head of the connecting bolt; The second elastic element is sleeved on the stud of the connecting bolt and abuts against the support leg and the platform. The number of the connecting bolts, the connecting holes, and the second elastic element are all multiple, and they correspond one-to-one; The stud of the connecting bolt passes through the corresponding connecting hole; The second elastic element is sleeved on the stud of the corresponding connecting bolt; The connecting hole is a stepped hole; the second elastic element abuts against the stepped surface of the connecting hole.

6. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 4, characterized in that, The platform is provided with a clearance hole that penetrates the platform in the first direction. The clearance hole is used to allow the shaft of the motor under test to pass through to connect to the buffer assembly. The platform is provided with a limiting structure, which is used to limit the placement position of the motor under test on the platform.

7. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 4, characterized in that, The mounting platform also includes a probe assembly, which includes a probe, a reciprocating component, and a mounting component. The reciprocating component connects the worktable and the mounting component, and the probe is connected to the mounting component; The reciprocating component is used to drive the mounting component to reciprocate along a first direction, so that the probe can move closer to or away from the platform. When the probe is close to the platform, it can be inserted into the terminal of the motor under test placed on the platform.

8. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 7, characterized in that, The motor performance testing device also includes a support assembly and a top plate assembly, wherein the top plate assembly is connected to the workbench via the support assembly; In the first direction, the top plate assembly is located on the side of the mounting platform opposite to the power assembly; The top plate assembly can approach the mounting platform along the first direction to press the motor under test placed on the mounting platform; The top panel assembly includes a linear displacement module and a pressing component; The linear displacement module is fixed to the support assembly; The pressing component is connected to the linear displacement module; The linear displacement module is used to drive the pressing component to approach and press against the motor under test; The pressing component is provided with a contoured groove adapted to the motor under test.

9. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 8, characterized in that, The top plate assembly also includes a support plate and a plurality of first guide columns. The linear displacement module is connected to the support plate, and the pressing member is fixed to the side of the support plate near the mounting platform. The first guide post is fixed on the worktable, extends along a first direction, and passes through the bearing plate; The ceiling assembly also includes a plurality of second guide posts, which are fixed to the support plate and are oriented toward the mounting platform along the first direction. The platform is provided with a plurality of guide holes that extend through in a first direction, and a bushing is provided in the guide hole, and each second guide post can be inserted into the bushing.

10. The fully automatic motor no-load and resistance current and torque performance testing device according to claim 9, characterized in that, The top plate assembly also includes a gold finger and a third elastic element. The third elastic element is capable of extending and retracting along the first direction. One end of the third elastic element is fixedly connected to the support plate, and the other end of the third elastic element is connected to the gold finger. In the first direction, the gold finger is facing the probe.

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