An actuator calibration device

Abstract

This utility model relates to the field of actuator technology, specifically to an actuator calibration device, including a support frame. A back plate is provided on the front end face of the support frame, and a positioning device is provided on the upper part of the back plate. The positioning device includes a positioner, and an upper fixed plate is provided at the output end of the positioner. A drive shaft for connecting the product to be calibrated is provided below the upper fixed plate. A lower fixed plate that cooperates with the upper fixed plate is provided on the top of the drive shaft. Upper fixed plates with different dispersion angles are provided on the lower surface of the upper fixed plate, and a stop block is protruding from the upper surface of the lower fixed plate, reducing the orientation time and improving the accuracy and efficiency of calibration.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, and specifically to an actuator calibration device. Background Technology

[0002] An actuator is a device in automation technology that receives control information and applies control actions to the controlled object. In a process control system, an actuator consists of two parts: an execution mechanism and a regulating mechanism. The regulating mechanism directly changes the parameters of the production process through the execution element, ensuring that the production process meets predetermined requirements. The execution mechanism receives control information from the controller and converts it into the output that drives the regulating mechanism (such as angular or linear displacement output).

[0003] Currently, actuators require overall stroke calibration before angle / opening control within the stroke range can be achieved. The calibration fixture mechanical structure consists of a rotating shaft, a fixed plate, a limit block, a stop pin, and fixing screws. The calibration principle is as follows: after the actuator is assembled, a calibration command is sent, the output shaft rotates, and the transmission shaft, through its irregular hole in the output shaft, drives the limit block fixed to the transmission shaft to strike the ejected stop pin, thus achieving the mechanical up-and-down calibration. However, during use, it was found that because the actuator output hole needs structural error prevention to avoid incorrect installation, the alignment between the transmission shaft and the output hole is difficult during production line calibration, resulting in excessively long orientation time. Because the actuator calibration process requires high angle accuracy, deviations between the limit block and the rotating shaft occur during production line tooling changes, leading to stroke offsets after calibration and inaccurate angle feedback. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, such as excessively long actuator calibration time and the existence of offset after calibration, and to provide an actuator calibration device.

[0005] To achieve the above objectives, this utility model embodiment adopts the following technical solution: an actuator calibration device includes a support frame, a back plate is provided on the front end face of the support frame, a positioning device is provided on the upper part of the back plate, the positioning device includes a positioner, an upper fixed plate is provided at the output end of the positioner, a transmission shaft for connecting the product to be calibrated is provided below the upper fixed plate, a lower fixed plate that cooperates with the upper fixed plate is provided on the top of the transmission shaft, upper limit blocks with different dispersion angles are provided on the lower surface of the upper fixed plate, and a stop block is provided on the upper surface of the lower fixed plate.

[0006] Furthermore, a connecting wheel is provided on the shaft of the drive shaft, and an angle encoder is connected to the connecting wheel via a connecting belt.

[0007] Furthermore, the bottom of the drive shaft is provided with a connector adapted to the product to be calibrated, the bottom of the drive shaft is provided with a receiving groove for fixing the connector, the upper part of the receiving groove is provided with a spring that abuts against the top of the connector, and the top of the connector is provided with a connecting hole that connects to the receiving groove.

[0008] Furthermore, the positioner is a cylinder, and the upper limit block is a sector-shaped block protruding from the upper fixed plate.

[0009] Furthermore, the front end face of the back plate is provided with a plurality of brackets for stabilizing the rotating shaft, and a bearing is provided at the connection between the bracket and the transmission shaft.

[0010] Furthermore, the support frame is provided with a guide rail on its side, the back side of the back plate is provided with a slider that cooperates with the guide rail, and an adjustment device for adjusting the height of the back plate is provided between the back plate and the support frame.

[0011] The beneficial effects of this utility model embodiment are as follows: The locator is provided with an upper fixed plate, and a transmission shaft for connecting the product to be calibrated is provided below the upper fixed plate. A lower fixed plate that cooperates with the upper fixed plate is provided at the top of the transmission shaft. The upper end of the transmission shaft is provided with the lower fixed plate, and a stop is provided on the upper surface of the lower fixed plate. The setting of the stop makes it easy to position the rotation angle of the transmission shaft. The lower surface of the upper fixed plate is provided with upper limit blocks with different dispersion angles. The stop on the lower fixed plate and the upper limit blocks form a limited rotation space. The dispersion angle of the upper limit blocks can be set to different specifications as needed. Compared with the existing irregular anti-misalignment holes, the positioning time is greatly reduced and the accuracy is improved. The orientation time is reduced and the calibration accuracy and efficiency are improved. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a front view structural diagram of the present utility model;

[0014] Figure 3 This is a schematic diagram of the upper fixing plate of this utility model;

[0015] Figure 4 This is a front view schematic diagram of the upper fixing plate of this utility model;

[0016] In the diagram: 1. Support frame; 101. Guide rail; 2. Back plate; 201. Cylinder; 201. Upper fixed plate; 203. Lower fixed plate; 204. Stop block; 205. Upper limit block; 3. Connector; 301. Drive shaft; 4. Angle encoder. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0018] See Figures 1 to 4 This utility model discloses an actuator calibration device, which mainly consists of a support frame 1, a back plate 2, a positioning device, a transmission shaft 301, an angle encoder 4, etc. The support frame 1 serves as the supporting foundation of the entire device, and the back plate 2 is provided on its front end. A guide rail 101 is provided on the side of the support frame 1, and a slider that cooperates with the guide rail 101 is provided on the back side of the back plate 2. An adjustment device for adjusting the height of the back plate 2 is provided between the back plate 2 and the support frame 1. The adjustment device can be adjusted by using bolts and adjustment holes, or by using a motor to drive a ball screw connected to the back plate 2 to adjust the height of the back plate 2. Through the adjustment device, the height of the back plate 2 can be flexibly adjusted according to the size and calibration requirements of different products to be calibrated, thereby improving the versatility of the device.

[0019] A positioning device is provided on the upper part of the back plate 2. The positioning device includes a positioner, which is a cylinder 201. The output end of the positioner is connected to an upper fixed plate 201. The extension and retraction of the cylinder 201 can control the position of the upper fixed plate 201 and adjust the calibration amount. A drive shaft 301 for connecting the product to be calibrated is provided below the upper fixed plate 201. A lower fixed plate 203 that cooperates with the upper fixed plate 201 is provided on the top of the drive shaft 301. To solve the problem of difficulty in matching the drive shaft 301 with the output hole of the product to be calibrated, this embodiment adds a connector 3 between the drive shaft 301 and the product to be calibrated. The connector 3 is arranged according to... Designed according to the outline of the product output hole, the drive shaft 301 has a transition fit with the product output hole. The bottom of the drive shaft 301 is provided with a receiving groove for fixing the connector 3. The upper part of the receiving groove is provided with a spring that abuts against the top of the connector 3. The top of the connector 3 is provided with a connecting hole that connects to the receiving groove. This makes the fit between the drive shaft 301 and the connector 3 more convenient and reduces the orientation time. At the same time, the drive shaft 301 is provided with a spring inside. During the pressing process, the spring can provide an auxiliary positioning function to ensure that the connector 3 and the product output hole are in tight contact. The drive shaft 301 transmits the action stably and is easy to replace, thus improving the performance.

[0020] The upper end of the drive shaft 301 is provided with a lower fixed plate 203. The upper surface of the lower fixed plate 203 is provided with a stop 204. The stop 204 makes it easy to position the rotation angle of the drive shaft 301. The lower surface of the upper fixed plate 201 is provided with upper limit blocks 205 with different dispersion angles. The upper limit blocks 205 are distributed in a fan shape. The lower fixed plate 203 and the upper fixed plate 201 are positioned and installed by splines and spline grooves, which makes it easy to determine the installation position when changing replacements and reduces the inconvenience of repeated loading and unloading during production changeover. During use, the stop block 204 on the lower fixed plate 203 and the upper limit block form a limited rotation space. The dispersion angle of the upper limit block 205 can be set to different specifications as needed. Compared with the existing irregular anti-misalignment holes, this greatly reduces the positioning time and improves accuracy. To accurately calibrate the angle during the rotation process, a connecting wheel is set on the shaft of the drive shaft 301. The connecting wheel is connected to the angle encoder 4 via a connecting belt. The angle encoder 4 can monitor the rotation angle of the drive shaft 301 in real time, ensuring the accuracy of the angle during calibration. Furthermore, the rotation angle of the drive shaft can be controlled by a motor, facilitating calibration and adjustment in conjunction with the drive shaft and improving the performance. In addition, to ensure the stable rotation of the drive shaft 301, the front end face of the back plate 2 is provided with multiple supports for stabilizing the drive shaft 301. Bearings are provided at the connection between the supports and the drive shaft 301, reducing friction and vibration during transmission.

[0021] During the calibration process, the product to be calibrated drives the connector 3 to rotate. The connector 3 is tightly fitted with the drive shaft 301, which in turn drives the drive shaft 301 to rotate. The drive shaft 301 drives the fixed disk to rotate. The limit block of the lower fixed disk 203 rotates and strikes the upper limit of the upper fixed disk 201. The angle encoder 4 calibrates the accuracy of the angle during the rotation process, thereby realizing the calibration process, reducing the direction finding time, and improving the accuracy and efficiency of calibration.

[0022] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0025] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An actuator calibration device, comprising a support frame, characterized in that: The front end of the support frame is provided with a back plate, and the upper part of the back plate is provided with a positioning device. The positioning device includes a positioner, and the output end of the positioner is provided with an upper fixed plate. A drive shaft for connecting the product to be calibrated is provided below the upper fixed plate. A lower fixed plate that cooperates with the upper fixed plate is provided on the top of the drive shaft. The lower surface of the upper fixed plate is provided with upper limit blocks with different dispersion angles, and the upper surface of the lower fixed plate is provided with a stop block protruding from it.

2. The actuator calibration device according to claim 1, characterized in that: A connecting wheel is provided on the shaft of the drive shaft, and an angle encoder is connected to the connecting wheel via a connecting belt.

3. The actuator calibration device according to claim 1, characterized in that: The bottom of the drive shaft is provided with a connector adapted to the product to be calibrated. The bottom of the drive shaft is provided with a receiving groove for fixing the connector. A spring is provided at the upper part of the receiving groove to abut against the top of the connector. The top of the connector is provided with a connecting hole that connects to the receiving groove.

4. The actuator calibration device according to claim 1, characterized in that: The positioner is a cylinder, and the upper limit block is a sector-shaped block protruding from the upper fixed plate.

5. The actuator calibration device according to claim 1, characterized in that: The front end face of the back plate is provided with multiple brackets for stabilizing the rotating shaft, and bearings are provided at the connection between the brackets and the transmission shaft.

6. The actuator calibration device according to claim 1, characterized in that: The support frame is provided with a guide rail on its side, and the back side of the back plate is provided with a slider that cooperates with the guide rail. An adjustment device for adjusting the height of the back plate is provided between the back plate and the support frame.

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