Electric motor actuator output shaft angle calibration device

Abstract

The utility model discloses an electrical motor actuator output shaft angle calibration device, it can install in the end part of electrical motor actuator, be used for calibrating the rotation angle of output shaft, include: the calibration disc, its disc body is established with the screw hole for with the fixed work end surface of electrical motor actuator, and form has the first avoidance hole for the output shaft passes through, the end face of calibration disc is provided with the scale groove for identifying angle, calibration pointer is used for indicating the rotation angle of output shaft, the second avoidance hole that forms has for the output shaft passes through on calibration pointer, wherein, calibration pointer with output shaft coaxial detachable connection, through the rotation output shaft to drive calibration pointer synchronous rotation, make the tip of calibration pointer point to the corresponding scale position of scale groove, thereby realize angle calibration. The device structure is simple, and convenient to install and operate, and can assist to carry out accurate angle alignment.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical actuator output shaft angle calibration technology, and in particular to an electric motor actuator output shaft angle calibration device. Background Technology

[0002] Electric motor actuators, as driving components that convert electrical energy into mechanical angle or linear displacement, are widely used in industrial automation, aerospace, and precision instruments. In these applications, the accuracy of the actuator's output shaft rotation angle directly affects the control precision and execution performance of the entire system. Therefore, accurate angle calibration of the output shaft is a common and important debugging step.

[0003] Currently, there are several different technical solutions for calibrating the output shaft angle of such actuators. Some solutions rely on angle sensors or rotary encoders installed inside the system for feedback and calibration. These electrical calibration methods typically require dedicated detection circuits and display devices, making the process relatively complex and inconvenient for rapid debugging in the actuator's independent state or on-site. Other mechanical calibration solutions may have room for improvement in terms of structural simplicity, intuitive readings, or compatibility with actuators of different specifications.

[0004] Therefore, it is necessary to design a calibration device that is simple in structure, easy to install and operate, and can assist in precise angle alignment. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides an electric motor actuator output shaft angle calibration device. The device has a simple structure, is easy to install and operate, and can assist in precise angle alignment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides an output shaft angle calibration device for an electric motor actuator, which can be installed at the end of the electric motor actuator for calibrating the rotation angle of the output shaft, including: The calibration disc has a screw hole on its body for fixing to the working end face of the electric motor actuator, and a first clearance hole for the output shaft to pass through; the end face of the calibration disc is provided with a scale groove for marking angles. A calibration pointer is used to indicate the rotation angle of the output shaft; a second clearance hole is formed on the calibration pointer for the output shaft to pass through; in, The calibration pointer is detachably connected to the output shaft on the same axis. By rotating the output shaft, the calibration pointer is rotated synchronously, so that the tip of the calibration pointer points to the corresponding scale position of the scale groove, thereby achieving angle calibration.

[0007] Furthermore, the output shaft is provided with a groove that is recessed inward; The second clearance hole of the calibration pointer is provided with a slide key that protrudes into it and cooperates with the slide groove; in, The calibration pointer and the output shaft are detachably connected via the slide groove and the slide key; By rotating the calibration pointer to drive the output shaft to rotate synchronously, the tip of the calibration pointer points to the corresponding scale position of the scale groove, thereby achieving angle calibration.

[0008] Furthermore, the scale grooves on the calibration disk are evenly distributed along the circumference of the calibration disk.

[0009] Furthermore, the included angle between adjacent scale grooves is no greater than 10°.

[0010] Furthermore, a first magnet is embedded in each of the plurality of the graduated grooves; A second magnet is fixedly provided at the root of the calibration pointer facing the scale groove, and the second magnet and the first magnet form a magnetic attraction engagement. in, When the calibration pointer is rotated to a specific scale position, the magnetic attraction between the second magnet and the corresponding first magnet provides the operator with a tactile positioning feel.

[0011] Furthermore, a first magnet is embedded in all of the graduated grooves.

[0012] Furthermore, the assembly gap between the calibration pointer and the calibration disk is not less than 1 mm.

[0013] This utility model has at least the following advantages or beneficial effects: This invention employs a calibration disc structure. The calibration disc is fixed to the end face of the electric motor actuator via screw holes, and a first clearance hole provides passage space for the output shaft. The scale groove on its end face forms the basis for angle marking. It also employs a calibration pointer structure. The calibration pointer engages with the output shaft via a second clearance hole, maintaining a coaxial and detachable connection. Overall, this invention provides an intuitive visual reading method through the mechanical interaction between the pointer and the scale, allowing the operator to directly observe and calibrate the rotation angle of the output shaft.

[0014] This invention employs a structure in which a first magnet is embedded in multiple graduated slots, and a structure in which a second magnet is fixedly placed at the base of the calibration pointer. The first and second magnets form a magnetic attraction. Overall, this invention can provide tactile positioning feedback to the operator through the attraction between the magnets when the pointer rotates to a specific scale position, assisting in precise angle alignment.

[0015] This invention employs a structure that maintains an assembly gap of no less than 1mm between the calibration pointer and the calibration dial. Overall, this invention ensures sufficient clearance between the pointer and the dial during rotation, preventing contact and friction between them, thereby guaranteeing the flexibility and smoothness of pointer rotation. Attached Figure Description

[0016] 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 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.

[0017] Figure 1 A schematic diagram of a structure in which an output shaft angle calibration device for an electric motor actuator is installed at the end of the electric motor actuator; Figure 2 A schematic diagram of an electric motor actuator output shaft angle calibration device; Figure 3 for Figure 2 Right view of the output shaft angle calibration device for the motor actuator of Zhongdian Electric; Figure 4 for Figure 2 Top view of the output shaft angle calibration device for the motor actuator of China Electric.

[0018] Figure label: 1-Electric motor actuator; 11-Output shaft; 111-Slide groove; 2-Calibration disc; 21-Screw hole; 22-First clearance hole; 23-Scale groove; 24-First magnet; 3-Calibration pointer; 31-Second clearance hole; 32-Slide key; 33-Second magnet. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.

[0023] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0024] The embodiments of this utility model will be described in detail below.

[0025] This utility model discloses an output shaft angle calibration device for an electric motor actuator. The device can be installed at the end of the electric motor actuator 1 to calibrate the rotation angle of the output shaft 11.

[0026] Figure 1 A schematic diagram of a structure in which an output shaft angle calibration device for an electric motor actuator is installed at the end of the electric motor actuator; Figure 2 A schematic diagram of an electric motor actuator output shaft angle calibration device; Figure 3 for Figure 2 Right view of the output shaft angle calibration device for the motor actuator of Zhongdian Electric; Figure 4 for Figure 2 Top view of the output shaft angle calibration device for the motor actuator of China Electric.

[0027] In this embodiment, the electric motor actuator 1 is the object of angle calibration, and its output shaft 11 is the rotating component that needs to be calibrated; in other embodiments, this device can also be applied to the angle calibration of other types of rotary drive devices, such as the output shaft angle calibration of hydraulic motors or pneumatic motors.

[0028] The calibration disk 2 is one of the core components of this invention, and its function is to provide an angle reference. The calibration disk 2 has screw holes 21 on its body for fixing to the working end face of the electric motor actuator 1. The screw holes 21 are used to reliably fix the calibration disk 2 to the electric motor actuator 1 via bolt connection. In this embodiment, four screw holes 21 are provided and evenly distributed around the circumference; in other embodiments, the number of screw holes 21 can be three or six, and the specific specifications can be adjusted according to installation requirements.

[0029] The calibration disk 2 also has a first clearance hole 22 for the output shaft 11 to pass through. The function of the first clearance hole 22 is to provide rotation space for the output shaft 11 and avoid interference between the output shaft 11 and the calibration disk 2. Its diameter is 0.5-2mm larger than the diameter of the output shaft 11.

[0030] The end face of the calibration disk 2 is provided with a scale groove 23 for marking angles. The function of the scale groove 23 is to form clear and easy-to-read angle scale lines.

[0031] The graduated grooves 23 on the calibration disk 2 are evenly distributed along the circumference of the calibration disk 2. This distribution helps to provide equally spaced angular references. The depth of the graduated grooves 23 is 0.5-1 mm, and the width is 1-2 mm. In this embodiment, the included angle between adjacent graduated grooves 23 is designed to be 10°; in other embodiments, depending on the accuracy requirements, the included angle between adjacent graduated grooves 23 can also be set to a smaller angle value such as 5° or 2° to meet the calibration needs of different accuracy. Smaller graduation values ​​can improve the resolution of angle readings, while larger graduation values ​​facilitate rapid positioning.

[0032] The calibration pointer 3 is another core component, and its function is to directly indicate the rotation angle of the output shaft 11. The calibration pointer 3 has a second clearance hole 31 for the output shaft 11 to pass through. The function of the second clearance hole 31 is to allow the calibration pointer 3 to be fitted onto the output shaft 11.

[0033] The calibration pointer 3 is coaxially and detachably connected to the output shaft 11. By rotating the output shaft 11, the calibration pointer 3 is driven to rotate synchronously, so that the tip of the calibration pointer 3 points to the corresponding scale position of the scale groove 23, thereby achieving angle calibration.

[0034] In another embodiment, the output shaft 11 has a recessed groove 111, which provides a mating base for keyed connections. The second clearance hole 31 of the calibration pointer 3 has a protruding key 32 that mates with the groove 111. The key 32 slides with the groove 111 to transmit torque. The calibration pointer 3 and the output shaft 11 are detachably connected via the groove 111 and the key 32. Rotating the calibration pointer 3 causes the output shaft 11 to rotate synchronously.

[0035] In addition, multiple scale grooves 23 are embedded with first magnets 24, which provide a force source for magnetic positioning. A second magnet 33 is fixedly disposed at the base of the calibration pointer 3 facing the scale groove 23. The second magnet 33 interacts with the first magnets 24. The second magnet 33 and the first magnet 24 form a magnetic attraction. When the calibration pointer 3 rotates to a specific scale position, the magnetic attraction between the second magnet 33 and the corresponding first magnet 24 provides the operator with a tactile positioning feel.

[0036] The first magnet 24 is fixed in the scale groove 23 by interference fit or adhesive, and the second magnet 33 is also fixed to the base of the pointer by interference fit or adhesive. In this embodiment, the first magnet 24 is embedded in some of the scale grooves 23; in another embodiment, the first magnet 24 can be embedded in all the scale grooves 23 to provide a uniform positioning feel across the entire scale range.

[0037] Furthermore, the assembly gap between the calibration pointer 3 and the calibration disk 2 is designed to be no less than 1mm. This gap ensures that the calibration pointer 3 and the calibration disk 2 will not interfere with each other during relative rotation. In this embodiment, the assembly gap is controlled at 1.5mm; in other embodiments, depending on manufacturing precision requirements, the assembly gap can also be set to a larger value such as 2mm or 2.5mm to ensure more flexible and smooth rotation. An appropriate assembly gap can avoid jamming caused by machining errors or thermal deformation, while ensuring the stability of pointer rotation.

[0038] Overall, this invention combines a calibration disk 2, a first magnet 24, a calibration pointer 3, and a second magnet 33, providing a simple and convenient angle calibration solution. Through the combined use of mechanical scale and magnetic positioning, it demonstrates positive effects in calibrating the angles of electric motor actuators, facilitating on-site debugging and periodic calibration. The magnetic engagement structure provides tactile assistance for precise alignment. This combination of features ensures both calibration accuracy and ease of operation.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An output shaft angle calibration device for an electric motor actuator, which can be installed at the end of an electric motor actuator (1) for calibrating the rotation angle of the output shaft (11), characterized in that, include: The calibration disk (2) has a screw hole (21) on its body for fixing to the working end face of the electric motor actuator (1), and a first clearance hole (22) for the output shaft (11) to pass through; the end face of the calibration disk (2) is provided with a scale groove (23) for marking angles. A calibration pointer (3) is used to indicate the rotation angle of the output shaft (11); a second clearance hole (31) is formed on the calibration pointer (3) for the output shaft (11) to pass through. in, The calibration pointer (3) is detachably connected to the output shaft (11) on the same axis. By rotating the output shaft (11), the calibration pointer (3) is driven to rotate synchronously, so that the tip of the calibration pointer (3) points to the corresponding scale position of the scale groove (23), thereby realizing angle calibration.

2. The electric motor actuator output shaft angle calibration device according to claim 1, characterized in that: The output shaft (11) is provided with a groove (111) that is recessed into it. The second clearance hole (31) of the calibration pointer (3) is provided with a slide key (32) that protrudes into it and cooperates with the slide groove (111). in, The calibration pointer (3) and the output shaft (11) are detachably connected through the slide groove (111) and the slide key (32); By rotating the calibration pointer (3) to drive the output shaft (11) to rotate synchronously, the tip of the calibration pointer (3) points to the corresponding scale position of the scale groove (23), thereby achieving angle calibration.

3. The electric motor actuator output shaft angle calibration device according to claim 1, characterized in that, The scale grooves (23) on the calibration disk (2) are evenly distributed along the circumference of the calibration disk (2).

4. The electric motor actuator output shaft angle calibration device according to claim 3, characterized in that, The included angle between adjacent scale grooves (23) is no greater than 10°.

5. The electric motor actuator output shaft angle calibration device according to claim 1, characterized in that: A first magnet (24) is embedded in one of the plurality of the graduated grooves (23); The calibration pointer (3) is fixedly provided with a second magnet (33) at the root of the pointer facing the scale groove (23), and the second magnet (33) and the first magnet (24) form a magnetic attraction engagement; in, When the calibration pointer (3) is rotated to a specific scale position, the magnetic attraction between the second magnet (33) and the corresponding first magnet (24) provides the operator with a positioning tactile sensation.

6. The electric motor actuator output shaft angle calibration device according to claim 5, characterized in that, All of the aforementioned scale grooves (23) are fitted with a first magnet (24).

7. The electric motor actuator output shaft angle calibration device according to any one of claims 5 or 6, characterized in that, The assembly gap between the calibration pointer (3) and the calibration disk (2) is not less than 1 mm.

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