A rotation angle calibration device

Abstract

The application discloses a rotation angle calibration device, which comprises a support assembly, at least comprising a first support part, the first support part comprising a first support plate; a calibration motor arranged on the first support plate, the calibration motor being provided with a driver with a digital encoder function; a chuck assembly in transmission connection with an output shaft of the calibration motor, and a chuck claw of the chuck assembly being used for clamping an output shaft of a device to be calibrated; and a clamping device used for clamping the device to be calibrated, so that the chuck claw is kept in connection with the output shaft of the device to be calibrated. During the test, the output shaft of the device to be calibrated and the output shaft of the calibration motor are in a synchronous rotation state, the driver of the calibration motor has a digital encoder function, and the rotation angle data of the calibration motor can be accurately collected. Meanwhile, the device to be calibrated also has a rotation angle reading function, the rotation data of the device to be calibrated and the accurate data of the calibration motor are compared, so that the calibration test of the device to be calibrated is realized.

Description

Technical Field

[0001] This application relates to the field of electric power steering systems, and more specifically, to a rotation angle calibration device. Background Technology

[0002] EPS (Electric Power Steering) controller is a power steering system that relies on an electric motor to provide assistance. Compared with the traditional hydraulic power steering system HPS (Hydraulic Power Steering), EPS system has many advantages and is therefore widely used.

[0003] EPS controllers have very strict requirements for the accuracy of their motor rotation angle, therefore, it is necessary to add corresponding test items to improve the quality of EPS controllers. Currently, there is no testing equipment suitable for calibrating the motor rotation angle of EPS controllers.

[0004] Therefore, how to calibrate and test the motor rotation angle of the EPS controller is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a rotation angle calibration device for calibrating and testing the motor rotation angle of an EPS controller.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] The first aspect of this application provides a rotation angle calibration device, comprising:

[0008] A support assembly, the support assembly including at least a first support portion, the first support portion including a first support plate;

[0009] A calibration motor is mounted on the first support plate, and the calibration motor is equipped with a driver with a digital encoder function;

[0010] The chuck assembly is connected to the output shaft of the calibration motor, and the jaws of the chuck assembly are used to clamp the output shaft of the device to be calibrated.

[0011] A clamping device is used to clamp the device to be calibrated, so that the jaws are connected to the output shaft of the device to be calibrated.

[0012] In one possible implementation, the calibration motor is mounted on the first support plate via a mounting flange, and the first support plate is provided with a positioning plate for positioning the device to be calibrated.

[0013] The positioning plate has a through hole for the output shaft of the device to be calibrated to extend into the mounting flange and the positioning plate;

[0014] The positioning plate and the mounting flange are arranged in parallel.

[0015] In one possible implementation, the clamping device is disposed on the positioning plate to fix the device to be calibrated on the positioning plate;

[0016] And / or,

[0017] The positioning plate and the mounting flange are connected by several coaxial positioning components of the same length.

[0018] In one possible implementation, the clamping device includes:

[0019] A piston cylinder is clamped and fixed to the positioning plate.

[0020] The clamping swing block has one end hinged to the piston rod of the clamping piston cylinder, and the other end is used to abut against the mounting lug of the device to be calibrated.

[0021] The connector has one end hinged to the positioning plate or the cylinder body of the clamping piston cylinder, and the other end hinged between the two ends of the clamping swing block.

[0022] In one possible implementation, the first support plate is provided with a tray device for supporting the device to be calibrated, the tray device being arranged on the side of the positioning plate away from the mounting flange.

[0023] In one possible implementation, the tray device has a guide portion that slides in conjunction with the device to be calibrated.

[0024] In one possible implementation, the clamping device includes a pressing device disposed on the first support plate, the pressing device being calibrated pressing against the positioning plate.

[0025] In one possible implementation, the first support portion further includes a first protective cover and / or a second protective cover disposed on the first support plate;

[0026] Both the calibration motor and the chuck assembly are located inside the first protective cover;

[0027] The pressing device is located on the second protective cover, and the side of the second protective cover facing the positioning plate has an opening for the output end of the pressing device to extend out.

[0028] In one possible implementation, the positioning plate is located outside the first protective cover;

[0029] And / or,

[0030] The first protective cover is provided with a first viewing window, which is used to observe the magnetic switch position of the clamping device and the display of the driver panel of the calibration motor.

[0031] And / or,

[0032] The first protective cover is equipped with a first detachable handle;

[0033] And / or,

[0034] The second protective cover is equipped with a second detachable handle.

[0035] In one possible implementation, the support component further includes a second support portion, which includes a second support plate;

[0036] The second support plate is provided with a connector docking device, which is used to insert the power supply connector that supplies power to the device to be calibrated into the power supply interface of the device to be calibrated.

[0037] In one possible implementation, the connector docking device includes:

[0038] A docking drive device is directly or indirectly mounted on the second support plate;

[0039] A connector mounting plate is disposed at the output end of the docking drive device and is driven by the docking drive device to move linearly. The power supply connector is disposed on the connector mounting plate. The first support plate has a plug hole for the power supply connector to pass through at the position corresponding to the power supply connector.

[0040] In one possible implementation, the connector docking device further includes:

[0041] The guide rod is directly or indirectly mounted on the second support plate;

[0042] A cylinder rod mounting plate is provided, which is slidably engaged with the guide rod, and a connector mounting plate is disposed on the cylinder rod mounting plate.

[0043] In one possible implementation, the connector docking device further includes a limiting plate fixed to the guide rod and located above the cylinder rod mounting plate to limit the upper limit position of the power supply connector.

[0044] In one possible implementation, the connector docking device further includes a mounting base, on which both the guide rod and the docking drive device are disposed, and on the mounting base is disposed on the second support plate.

[0045] In one possible implementation, the mounting floor is provided with a guide rod support, the guide rod support having a insertion hole for inserting the guide rod.

[0046] In one possible implementation, the second support plate is located below the first support plate, and the second support portion further includes a third protective cover disposed between the first support plate and the second support plate to surround the space between the first support plate and the second support plate;

[0047] The third protective cover is provided with a second viewing window, which is used to observe the working status of the solenoid valve assembly.

[0048] In one possible implementation, a locking position sensor is also included for detecting whether the device to be calibrated is in the locking position. When the device to be calibrated is in the locking position, the clamping device clamps the device to be calibrated. When the clamping device clamps the device to be calibrated, the connector docking device inserts the power supply connector into the power supply interface of the device to be calibrated.

[0049] The rotation angle calibration device provided in this application, when calibrating the rotation angle of the device to be calibrated, clamps the output shaft of the device to be calibrated using a chuck assembly, thereby connecting the output shaft of the calibration motor to the output shaft of the device to be calibrated. During testing, the output shafts of the device to be calibrated and the calibration motor rotate synchronously. The driver of the calibration motor has a digital encoder function, which can accurately collect the rotation angle data of the calibration motor. At the same time, since the device to be calibrated also has a rotation angle reading function, the rotation data of the device to be calibrated is compared with the accurate data of the calibration motor, thereby realizing the calibration test of the device to be calibrated. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the rotation angle calibration device disclosed in the embodiments of this application;

[0052] Figure 2 This is a schematic diagram of the rotation angle calibration device disclosed in the embodiments of this application after the protective cover has been removed;

[0053] Figure 3This is a partial structural schematic diagram of the rotation angle calibration device disclosed in the embodiments of this application;

[0054] Figure 4 This is a cross-sectional view of the calibration motor and the device to be calibrated disclosed in the embodiments of this application after docking;

[0055] Figure 5 This is a partial structural diagram of the clamping device disclosed in the embodiments of this application after clamping;

[0056] Figure 6 This is a cross-sectional view of the power supply connector insertion point disclosed in the embodiments of this application.

[0057] The meanings of the various reference numerals in the figure are as follows:

[0058] 100 - First support section; 110 - First protective cover; 111 - First detachable handle; 112 - First viewing window; 120 - Second protective cover; 121 - Second detachable handle; 130 - First support plate;

[0059] 200 - Second support section; 210 - Column; 220 - Third protective cover; 221 - Second viewing window; 230 - Second support plate;

[0060] 300 - Angle calibration assembly; 311 - Calibration motor; 312 - Key; 313 - Driver; 321 - Mounting flange; 322 - Positioning plate; 323 - Coaxial positioning component; 330 - Clamping device; 331 - Clamping piston cylinder; 332 - Clamping swing block; 333 - Connector; 334 - Pushing device; 340 - Device to be calibrated; 350 - Pallet device; 360 - Chuck assembly; 361 - Chuck mounting flange; 362 - Chuck body; 363 - Chuck support urethane block; 364 - Air pipe connector; 365 - Chuck claw;

[0061] 400 - Connector docking device; 410 - Limiting plate; 421 - Power supply connector; 422 - Connector mounting plate; 430 - Linear bearing; 441 - Guide rod support seat; 442 - Guide rod; 443 - Cylinder rod mounting plate; 444 - Mounting floor; 450 - Docking drive device.

[0062] 500 - Electrical system components; 510 - Busbar; 520 - Solenoid valve assembly; 530 - Pressure gauge. Detailed Implementation

[0063] The core of this application is to provide a rotation angle calibration device for calibrating and testing the motor rotation angle of an EPS controller.

[0064] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the application as described in the claims. Additionally, the complete composition represented in the embodiments below is not limited to what is necessary as the solution to the application described in the claims. It should be noted that, for ease of description, only the parts relevant to the application are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0065] like Figure 1 and Figure 2 As shown in the figure, the rotation angle calibration device disclosed in this application includes a support assembly and an angle calibration assembly 300. The support assembly includes at least a first support portion 100, and the first support portion 100 includes a first support plate 130.

[0066] like Figures 3-6 As shown, the angle calibration assembly 300 includes a calibration motor 311, a chuck assembly 360, and a clamping device 330. The calibration motor 311 is mounted on the first support plate 130. The calibration motor 311 can be a servo motor and is equipped with a driver 313 with digital encoder function.

[0067] The chuck assembly 360 is drive-connected to the output shaft of the calibration motor 311, and the jaws 365 of the chuck assembly 360 are used to clamp the output shaft of the device to be calibrated 340. For example... Figure 4 As shown, the chuck assembly 360 may include a chuck mounting flange 361, a chuck body 362, a chuck support urethane block 363, an air pipe connector 364, and chuck claws 365.

[0068] The chuck mounting flange 361 is connected to the output shaft of the calibration motor 311 via a key 312. The chuck body 362 is supported on a chuck support urethane block 363, which is mounted on a first support plate 130 and supports the chuck body 362. An air pipe connector 364 and jaws 365 are both mounted on the chuck body 362. The chuck mounting flange 361 can drive the jaws 365 to rotate. Compressed gas can be introduced through the air pipe connector 364 to push the jaws 365 to clamp the output shaft of the device to be calibrated 340. After the jaws 365 clamp the output shaft of the device to be calibrated 340, the calibration motor 311 can drive the output shaft of the device to be calibrated 340 to rotate via the chuck assembly 360.

[0069] Those skilled in the art will understand that the chuck assembly 360 is a pneumatic chuck commonly used in the prior art, and its specific principle will not be elaborated further. It should be noted that the chuck assembly 360 can also be other chuck devices, as long as they can clamp the output shaft of the device to be calibrated 340 and realize the transmission connection between the calibration motor 311 and the device to be calibrated 340.

[0070] The clamping device 330 is used to clamp the device to be calibrated 340, so that the jaw 365 remains connected to the output shaft of the device to be calibrated 340. The clamping device 330 can restrict the position of the device to be calibrated 340 to prevent the device to be calibrated 340 from moving during the calibration test and affecting the test accuracy.

[0071] The rotation angle calibration device disclosed in this application, when calibrating the rotation angle of a device 340 (e.g., an EPS controller) needs to be calibrated, clamps the output shaft of the device 340 to be calibrated using a chuck assembly 360, thereby connecting the output shaft of the calibration motor 311 to the output shaft of the device 340 to be calibrated. During testing, the output shafts of the device 340 to be calibrated and the output shaft of the calibration motor 311 rotate synchronously. The driver 313 of the calibration motor 311 has a digital encoder function, which can accurately collect the rotation angle data of the calibration motor 311. At the same time, since the device 340 to be calibrated also has a rotation angle reading function, the rotation data of the device 340 to be calibrated is compared with the accurate data of the calibration motor 311, thereby realizing the calibration test of the device 340 to be calibrated.

[0072] like Figure 3 As shown, the calibration motor 311 can be mounted on the first support plate 130 via the mounting flange 321, and the driver 313 can be mounted on the mounting flange 321 via a mounting bracket. Of course, the driver 313 can also be mounted in other locations, not limited to the mounting flange 321.

[0073] The first support plate 130 is provided with a positioning plate 322 for positioning the device to be calibrated 340. The positioning plate 322 and the mounting flange 321 are arranged in parallel, which facilitates the coaxiality of the output shaft of the device to be calibrated 340 and the output shaft of the calibration motor 311. The position of the device to be calibrated 340 on the first support plate 130 can be determined by the positioning plate 322, that is, the relative positional relationship with the calibration motor 311 can be determined.

[0074] Specifically, the positioning plate 322 has a through hole for the output shaft of the device to be calibrated 340 to extend into the space between the mounting flange 321 and the positioning plate 322. The device to be calibrated 340 is pushed from the side of the positioning plate 322 away from the mounting flange 321 toward the positioning plate 322 until it abuts against the positioning plate 322, and the output shaft of the device to be calibrated 340 extends through the through hole of the positioning plate 322 so that the jaws 365 of the chuck assembly 360 can clamp the output shaft of the device to be calibrated 340.

[0075] In this embodiment, the positioning plate 322 can limit the calibration position of the device to be calibrated 340, ensuring that the output shaft of the device to be calibrated 340 and the jaws 365 of the chuck assembly 360 are aligned. It can also ensure the axial distance between the output shaft of the device to be calibrated 340 and the jaws 365 of the chuck assembly 360, ensuring that the jaws 365 can clamp the output shaft of the device to be calibrated 340. Moreover, it can quickly determine the installation position of the device to be calibrated 340, thus improving the installation efficiency of the device to be calibrated 340.

[0076] In one specific embodiment of this application, the clamping device 330 can be disposed on the positioning plate 322 to fix the device to be calibrated 340 on the positioning plate 322. In this embodiment, the clamping device 330 is directly fixed on the positioning plate 322, and the device to be calibrated 340 also needs to be positioned by the positioning plate 322. Therefore, after the device to be calibrated 340 is positioned, the clamping device 330 can quickly clamp the device to be calibrated 340 to prevent the device to be calibrated 340 from shifting relative to the positioning plate 322.

[0077] The positioning plate 322 and the mounting flange 321 can be connected by several coaxial positioning elements 323 of the same length. In this embodiment, multiple coaxial positioning elements 323 are provided between the positioning plate 322 and the mounting flange 321 to ensure the parallelism between the positioning plate 322 and the mounting flange 321. This ensures that after the calibration motor 311 is positioned by the mounting flange 321 and the calibration device 340 is positioned by the positioning plate 322, the output shaft of the calibration motor 311 and the output shaft of the calibration device 340 can be aligned, avoiding the problem of misalignment caused by the non-parallelism of the positioning plate 322 and the mounting flange 321.

[0078] like Figure 5 As shown in a specific embodiment of this application, the clamping device 330 includes a clamping assembly, which includes a clamping piston cylinder 331, a clamping swing block 332, and a connector 333.

[0079] The clamping piston cylinder 331 is fixed to the positioning plate 322. Specifically, the cylinder body of the clamping piston cylinder 331 can be fixed to the positioning plate 322 by fasteners. For example, the clamping piston cylinder 331 and the calibration device 340 can be arranged on both sides of the positioning plate 322 respectively. The positioning plate 322 has corresponding holes so that the piston rod of the clamping piston cylinder 331 can pass through the positioning plate 322 and extend into one side of the calibration device 340.

[0080] One end of the clamping swing block 332 is hinged to the piston rod of the clamping piston cylinder 331, and the other end is used to abut against the mounting lug of the device to be calibrated 340. A buffer block can be provided on the portion of the clamping swing block 332 that abuts against the mounting lug. The buffer block contacts the mounting lug to prevent wear on the mounting lug due to collision. The buffer block can be made of rubber or plastic, or other materials with a certain degree of deformation and low hardness.

[0081] One end of the connector 333 is hinged to the positioning plate 322 or the cylinder body of the clamping piston cylinder 331, and the other end is hinged between the two ends of the clamping swing block 332. The hinge point between the connector 333 and the clamping swing block 332 is the rotation center of the clamping swing block 332. When the piston rod of the clamping piston cylinder 331 retracts, it can drive the clamping swing block 332 to rotate in a first direction, so that the clamping swing block 332 moves away from the mounting ear plate; when the piston rod of the clamping piston cylinder 331 extends, it can drive the clamping swing block 332 to rotate in a second direction, so that the clamping swing block 332 abuts against the side of the mounting ear plate facing away from the positioning plate 322. The first direction and the second direction are opposite directions of rotation.

[0082] When installing the calibration device 340, firstly, the piston rod of the clamping piston cylinder 331 needs to be retracted, so that the clamping swing block 332 opens, preventing the clamping swing block 332 from interfering with the mounting lug of the calibration device 340. Then, the calibration device 340 is pushed to abut against the positioning plate 322. Finally, the piston rod of the clamping piston cylinder 331 is extended, so that the clamping swing block 332 abuts against the side of the mounting lug facing away from the positioning plate 322, preventing the calibration device 340 from moving along the axial direction of its output shaft.

[0083] Since the calibration device 340 has two mounting lugs, two clamping components can also be provided to clamp the two mounting lugs respectively.

[0084] In one specific embodiment of this application, a tray device 350 for supporting a calibration device 340 is provided on the first support plate 130. The tray device 350 is arranged on the side of the positioning plate 322 away from the mounting flange 321. The tray device 350 has a guide portion that slides with the calibration device 340. When installing the calibration device 340, the guide portion can be used to guide the calibration device 340 to slide towards the positioning plate 322. The tray device 350 can restrict the position of the calibration device 340 perpendicular to its axial direction, so that the calibration device 340 cannot move along the plane where the first support plate 130 is located.

[0085] like Figure 3As shown, to further improve the stability of the clamping of the device to be calibrated 340, in this embodiment, the clamping device 330 includes a pressing device 334 disposed on the first support plate 130. The pressing device 334 is used to press the device to be calibrated 340 against the positioning plate 322. The pressing device 334 can be a pressing cylinder, and a pressing plate is disposed on its cylinder rod. The pressing plate applies the thrust of the pressing cylinder to the device to be calibrated 340, further pressing the device to be calibrated 340, so that the device to be calibrated 340 is stably locked.

[0086] like Figure 1 As shown, the first support portion 100 may further include a first protective cover 110 and / or a second protective cover 120 disposed on the first support plate 130. The calibration motor 311 and the chuck assembly 360 are both located inside the first protective cover 110. The first protective cover 110 can surround the calibration motor 311 and the chuck assembly 360 and other components inside it, and its main function is to prevent dust and avoid mechanical contact that could cause injury.

[0087] The pressing device 334 is located inside the second protective cover 120. The side of the second protective cover 120 facing the positioning plate 322 has an opening for the output end of the pressing device 334 to extend, so that the pressing device 334 can apply a pressing force to the device 340 to be calibrated. The main function of the second protective cover 120 is to prevent dust and avoid mechanical contact that could cause injury.

[0088] The positioning plate 322 and the tray device 350 are located outside the first protective cover 110, that is, the main body of the device to be calibrated 340 is located outside the first protective cover 110 and the second protective cover 120, so that the installation of the device to be calibrated 340 does not require opening the first protective cover 110 and the second protective cover 120.

[0089] The first protective cover 110 is provided with a first viewing window 112, which is used to observe the magnetic switch position of the clamping device 330 and the readings on the driver panel of the calibration motor 311. The magnetic switch is used to detect the clamping and releasing states of the clamping device 330. The position of the magnetic switch can be observed through the first viewing window 112, so the clamping and releasing states of the clamping device 330 can be determined by the magnetic switch. The driver 313 has a driver panel that can display the rotation angle data of the calibration motor 311. The first viewing window 112 can be made of transparent acrylic material or other transparent materials. In this embodiment, the specific material of the first viewing window 112 is not limited, as long as it is a transparent material.

[0090] The first protective cover 110 is provided with a first removal handle 111, which allows for easy handling of the first protective cover 110; the second protective cover 120 is provided with a second removal handle 121, which allows for easy handling of the second protective cover 120. Both the first protective cover 110 and the second protective cover 120 can be fixed to the first support plate 130 by fasteners.

[0091] During testing, it is necessary to read the rotation angle data of the device to be calibrated 340, therefore the device to be calibrated 340 needs to be powered on. The tester can manually plug the power connector 421 that powers the device to be calibrated 340 into the power supply interface of the device to be calibrated 340.

[0092] like Figure 2 , Figure 5 and Figure 6 As shown, to reduce the workload of testing personnel, the rotation angle calibration device disclosed in this embodiment can be equipped with a connector docking device 400 to replace the manual insertion of the power supply connector 421. Specifically, the support assembly also includes a second support part 200, which includes a second support plate 230 (e.g., Figure 1 As shown, the second support plate 230 is located below the first support plate 130. For example, the second support plate 230 and the first support plate 130 can be arranged in parallel. To allow the first support plate 130 to be arranged parallel to the upper side of the second support plate 230, several columns 210 can be provided between them. One end of each column 210 is connected to the second support plate 230, and the other end is connected to the first support plate 130, thereby holding the first support plate 130 above the second support plate 230.

[0093] Those skilled in the art will understand that the power supply interface of the device to be calibrated 340 is located on the lower side. Therefore, the second support plate 230 is positioned below the first support plate 130, allowing the power supply connector 421 to be inserted into the power supply interface from below. Of course, if the power supply interface of the device to be calibrated 340 is located on another side, the second support plate 230 needs to be positioned on the corresponding side of the device to be calibrated 340.

[0094] The second support plate 230 is provided with a connector docking device 400, which is used to insert the power supply connector 421, which supplies power to the device 340 to be calibrated, into the power supply interface of the device 340 to be calibrated. That is, the connector docking device 400 can output linear displacement to push the power supply connector 421 to move in a straight line, thereby realizing the function of inserting into the power supply interface and pulling out of the power supply interface.

[0095] like Figure 5 and Figure 6As shown, in this embodiment, the connector docking device 400 may include a docking drive device 450 and a connector mounting plate 422. The docking drive device 450 may be directly or indirectly disposed on the second support plate 230. The docking drive device 450 may be a docking cylinder, or a linear motor, hydraulic cylinder, or other drive device capable of outputting linear displacement.

[0096] A connector mounting plate 422 is disposed at the output end of the docking drive device 450. The connector mounting plate 422 can be driven by the docking drive device 450 and move linearly. A power supply connector 421 is disposed on the connector mounting plate 422 and can move linearly toward and away from the power supply interface of the device to be calibrated 340 along with the connector mounting plate 422. The first support plate 130 is provided with a socket for the power supply connector 421 to pass through at the position corresponding to the power supply connector 421. That is, the socket can avoid the movement of the power supply connector 421 and prevent the first support plate 130 from blocking the power supply connector 421, so that the power supply connector 421 cannot be plugged in or unplugged from the power supply interface of the device to be calibrated 340.

[0097] Furthermore, to ensure that the power supply connector 421 can move in a straight line and to prevent the power supply connector 421 from deviating during movement, which could lead to a failure to effectively align with the power supply interface, in this embodiment, the connector docking device 400 may also include a guide rod 442 and a cylinder rod mounting plate 443. The guide rod 442 is directly or indirectly disposed on the second support plate 230, and the guide rod 442 is parallel to the moving direction of the output end of the docking drive device 450.

[0098] The cylinder rod mounting plate 443 is slidably fitted with the guide rod 442, and the connector mounting plate 422 is disposed on the cylinder rod mounting plate 443. For example, a linear bearing 430 may be disposed on the cylinder rod mounting plate 443. The linear bearing 430 is slidably fitted with the guide rod 442 to reduce the friction between the two during relative sliding and improve the smoothness of sliding.

[0099] In this embodiment, a sliding guide rod 442 and a cylinder rod mounting plate 443 are added. The output end of the docking drive device 450 can be connected to the cylinder rod mounting plate 443 or the connector mounting plate 422. The cylinder rod mounting plate 443 is connected to the connector mounting plate 422, so the cylinder rod mounting plate 443 can move synchronously with the connector mounting plate 422.

[0100] Furthermore, the guide rod 442 can guide the cylinder rod mounting plate 443, thereby guiding the movement direction of the output end of the docking drive device 450, ensuring the linear displacement direction of the connector mounting plate 422, and thus ensuring that the power supply connector 421 can be effectively aligned with the power supply interface during movement.

[0101] To limit the travel of the docking drive device 450 and prevent the power supply connector 421 from over-plugging and colliding with the calibration device 340, causing damage, in this embodiment, the connector docking device 400 also includes a limiting plate 410, which is fixed to the guide rod 442. It should be noted that the limiting plate 410 can also be fixed to the first support plate 130, as long as it is fixed to a stationary component.

[0102] The limiting plate 410 is located above the cylinder rod mounting plate 443 to limit the upper limit position of the power supply connector 421. When the docking drive device 450 pushes the cylinder rod mounting plate 443 upward until it abuts against the lower side of the limiting plate 410, it can no longer push the cylinder rod mounting plate 443 and the power supply connector 421 upward, thereby causing the power supply connector 421 to be in the upper limit position. Those skilled in the art will understand that the setting position of the limiting plate 410 can be set according to the insertion position of the power supply connector 421 to prevent damage caused by the power supply connector 421 colliding with the calibration device 340 due to over-insertion.

[0103] To facilitate the installation of the connector docking device 400, in this embodiment, the connector docking device 400 may further include a mounting base 444, with the guide rod 442 and the docking drive device 450 both mounted on the mounting base 444, which is mounted on the second support plate 230. When installing the connector docking device 400, first, the guide rod 442 and the docking drive device 450 are mounted on the mounting base 444, and then components such as the cylinder rod mounting plate 443, connector mounting plate 422, limit plate 410, and power supply connector 421 are mounted on the guide rod 442 and the docking drive device 450. Finally, the connector docking device 400 is installed entirely onto the second support plate 230.

[0104] Because the space between the second support plate 230 and the first support plate 130 is narrow and inconvenient for installation, the assembly of each component of the connector docking device 400 is completed externally, and then the whole assembly is installed onto the second support plate 230, which can greatly facilitate the installation and improve the installation efficiency.

[0105] Furthermore, a guide rod support 441 is provided on the mounting floor 444, and the guide rod support 441 has a insertion hole for inserting the guide rod 442. The guide rod 442 can be directly inserted into the insertion hole of the guide rod support 441, specifically with a transition fit or clearance fit to improve the installation efficiency of the guide rod 442.

[0106] The guide rod support 441 can be fixed to the mounting floor 444 by fasteners. The number of guide rod support 441 can be determined according to the number of guide rods 442. Usually, there are four guide rods 442, which are arranged at the four corners of the mounting floor 444. Then, the guide rod support 441 can also be arranged at the four corners of the mounting floor 444.

[0107] It should be noted that the number of guide rods 442 is not limited to four. Those skilled in the art can select the specific number of guide rods 442 according to the application scenario.

[0108] like Figure 1 As shown, the second support portion 200 may further include a third protective cover 220 disposed between the first support plate 130 and the second support plate 230 to surround the space between the first support plate 130 and the second support plate 230. The third protective cover 220 is used to surround the connector docking device 400 inside, and its main function is to prevent dust and avoid mechanical contact that could cause injury.

[0109] The third protective cover 220 is equipped with a second viewing window 221, which is used to observe the working status of the solenoid valve assembly. The chuck assembly 360, the clamping piston cylinder 331, and the pushing device 334 can all be cylinders; therefore, each cylinder's gas circuit is equipped with a solenoid valve. By controlling the solenoid valves, the actions of the chuck assembly 360, the clamping piston cylinder 331, and the pushing device 334 can be controlled. The second viewing window 221, used to observe the working status of the solenoid valve assembly, facilitates the identification of fault causes. For example, when the cylinder rod cannot extend, checking whether the corresponding solenoid valve is in the appropriate control state can help determine whether the fault lies with the solenoid valve or the cylinder.

[0110] The third protective cover 220 also houses an electrical system component 500, which includes a manifold 510, a solenoid valve assembly 520, a pressure gauge 530, and a pressure regulating valve. The manifold 510 is mounted on the second support plate 230; the solenoid valve assembly 520 is mounted on the manifold 510; and the pressure gauge 530 and the pressure regulating valve can be mounted on the inner wall of the third protective cover 220.

[0111] In this embodiment, the rotation angle calibration device may further include a locking position sensor for detecting whether the device 340 to be calibrated is in the locked position. The locking position sensor is a position sensor used to detect the position of the device 340 to be calibrated. When the tester pushes the device 340 to be calibrated until it abuts against the positioning plate 322, it will be detected by the locking position sensor.

[0112] When the device to be calibrated 340 is in the locked position, the clamping device 330 clamps the device to be calibrated 340. That is, when the locking position sensor detects that the device to be calibrated 340 is in the locked position, the solenoid valve in the solenoid valve assembly 520, which controls the clamping device 330, is activated, causing the clamping device 330 to work and clamp the device to be calibrated 340, thus keeping the device to be calibrated 340 stable. Specifically, the clamping piston cylinder 331 is activated first, causing the clamping swing block 332 to abut against the mounting ear plate; then the pushing device 334 is activated, pressing the device to be calibrated 340.

[0113] When the clamping device 330 clamps the device to be calibrated 340, the connector docking device 400 inserts the power supply connector 421 into the power supply interface of the device to be calibrated 340. Specifically, the solenoid valve in the solenoid valve assembly 520, which controls the docking drive device 450, is activated, causing the docking drive device 450 to operate and insert the power supply connector 421 into the power supply interface of the device to be calibrated 340, thus completing the power-on operation of the device to be calibrated 340. After power-on, the calibration motor 311 can be turned on for testing. This embodiment can calibrate the device to be calibrated 340 (such as the motor shaft of an EPS controller), with the deviation between the calibration value and the test value within ±0.1°. It is compatible with both manual and automated production line needs while also facilitating movement and subsequent maintenance.

[0114] It should be noted that the sequence of the above testing processes can be set using time parameters or determined by position sensors to confirm the completion of the previous step. The order of control relationships is widely used in automation, and will not be elaborated upon further in this article.

[0115] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0116] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0117] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0118] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A rotation angle calibration device, characterized in that, include: A support assembly, the support assembly including at least a first support portion (100), the first support portion (100) including a first support plate (130). A calibration motor (311) is mounted on the first support plate (130), and the calibration motor (311) is equipped with a driver (313) with a digital encoder function. The chuck assembly (360) is connected to the output shaft of the calibration motor (311), and the jaws (365) of the chuck assembly are used to hold the output shaft of the device to be calibrated (340); A clamping device (330) is used to clamp the device to be calibrated (340) so that the jaw (365) remains connected to the output shaft of the device to be calibrated (340).

2. The rotation angle calibration device as described in claim 1, characterized in that, The calibration motor (311) is mounted on the first support plate (130) via a mounting flange (321), and the first support plate (130) is provided with a positioning plate (322) for positioning the device to be calibrated (340). The positioning plate (322) has a through hole for the output shaft of the device to be calibrated (340) to extend into the space between the mounting flange (321) and the positioning plate (322); The positioning plate (322) and the mounting flange (321) are arranged in parallel.

3. The rotation angle calibration device as described in claim 2, characterized in that, The clamping device (330) is disposed on the positioning plate (322) to fix the device to be calibrated (340) on the positioning plate (322); And / or, The positioning plate (322) and the mounting flange (321) are connected by a number of coaxial positioning parts (323) of the same length; And / or, The clamping device (330) includes a clamping piston cylinder (331), a clamping swing block (332), and a connector (333). The clamping piston cylinder (331) is fixed on the positioning plate (322). One end of the clamping swing block (332) is hinged to the piston rod of the clamping piston cylinder (331), and the other end is used to abut against the mounting lug of the device to be calibrated (340). One end of the connector (333) is hinged to the positioning plate (322) or the cylinder body of the clamping piston cylinder (331), and the other end is hinged between the two ends of the clamping swing block (332). And / or, The first support plate (130) is provided with a tray device (350) for supporting the calibration device (340), and the tray device (350) is arranged on the side of the positioning plate (322) away from the mounting flange (321).

4. The rotation angle calibration device as described in claim 2, characterized in that, The clamping device (330) includes a pressing device (334) disposed on the first support plate (130), the pressing device (334) being used to press the device to be calibrated (340) against the positioning plate (322). The first support (100) further includes a first protective cover (110) and / or a second protective cover (120) disposed on the first support plate (130). The calibration motor (311) and the chuck assembly (360) are both located inside the first protective cover (110); The pressing device (334) is located inside the second protective cover (120), and the second protective cover (120) has an opening on the side facing the positioning plate (322) for the output end of the pressing device (334) to extend out.

5. The rotation angle calibration device as described in claim 4, characterized in that, The positioning plate (322) is located outside the first protective cover (110); And / or, The first protective cover (110) is provided with a first viewing window (112), which is used to observe the magnetic switch position of the clamping device (330) and the driver panel display of the calibration motor (311). And / or, The first protective cover (110) is provided with a first detachable handle (111). And / or, The second protective cover (120) is provided with a second detachable handle (121).

6. The rotation angle calibration device as described in any one of claims 1-5, characterized in that, The support assembly further includes a second support portion (200), which includes a second support plate (230). The second support plate (230) is provided with a connector docking device (400), which is used to insert the power supply connector (421) that supplies power to the device to be calibrated (340) into the power supply interface of the device to be calibrated (340). The connector docking device (400) includes: The docking drive device (450) is directly or indirectly mounted on the second support plate (230); The connector mounting plate (422) is located at the output end of the docking drive device (450) and is driven by the docking drive device (450) to move linearly. The power supply connector (421) is located on the connector mounting plate (422). The first support plate (130) is provided with a plug hole for the power supply connector (421) to pass through at the position corresponding to the power supply connector (421).

7. The rotation angle calibration device as described in claim 6, characterized in that, The connector docking device (400) further includes: The guide rod (442) is directly or indirectly disposed on the second support plate (230); Cylinder rod mounting plate (443), the cylinder rod mounting plate (443) is slidably engaged with the guide rod (442), and the connector mounting plate (422) is disposed on the cylinder rod mounting plate (443); A limiting plate (410) is fixed on the guide rod (442) and the limiting plate (410) is located on the upper side of the cylinder rod mounting plate (443) to limit the upper limit position of the power supply connector (421).

8. The rotation angle calibration device as described in claim 7, characterized in that, The connector docking device (400) further includes a mounting plate (444), the guide rod (442) and the docking drive device (450) are both disposed on the mounting plate (444), and the mounting plate (444) is disposed on the second support plate (230); The mounting floor (444) is provided with a guide rod support (441), which has a plug hole for inserting the guide rod (442).

9. The rotation angle calibration device as described in claim 6, characterized in that, The second support plate (230) is located below the first support plate (130), and the second support part (200) further includes a third protective cover (220) disposed between the first support plate (130) and the second support plate (230) to surround the space between the first support plate (130) and the second support plate (230). The third protective cover (220) is provided with a second viewing window (221), which is used to observe the working status of the solenoid valve assembly.

10. The rotation angle calibration device as described in claim 6, characterized in that, It also includes a locking position sensor for detecting whether the device to be calibrated (340) is in the locking position. When the device to be calibrated (340) is in the locking position, the clamping device (330) clamps the device to be calibrated (340). When the clamping device (330) clamps the device to be calibrated (340), the connector docking device (400) inserts the power supply connector (421) into the power supply interface of the device to be calibrated (340).

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