Modular quick-mount interface device for electromagnetic angular displacement sensor compatible with multiple shaft systems

Abstract

The utility model discloses an embodiment relates to a kind of electromagnetic angular displacement sensor modularization quick-mounting interface devices compatible with multiple shaft systems, including optical platform, motor, encoder module, shaft sleeve adaptation module and top plate;The motor, encoder module and shaft sleeve adaptation module are sequentially connected from bottom to top between the optical platform and top plate;The shaft sleeve adaptation module includes XY axis displacement unit and Z axis displacement unit, the lower end surface of the XY axis displacement unit is fixed Z axis displacement unit by fixed unit, one side of the XY axis displacement unit is provided with X direction adjusting knob, another side of the XY axis displacement unit is provided with Y direction adjusting knob;The side of the Z axis displacement unit is provided with Z direction adjusting knob.The technical scheme provided in the embodiment of the utility model realizes interface standardization by shaft sleeve adaptation module, and different shaft system types can be compatible using replaceable standardized interface elements.

Description

Technical Field

[0001] This utility model relates to the field of angular displacement sensor technology, and in particular to a modular quick-installation interface device for an electromagnetic angular displacement sensor compatible with multiple axes. Background Technology

[0002] Electromagnetic angular displacement sensors (such as inductive encoders) are widely used as precision measuring devices in industrial automation, robotics, CNC machine tools, aerospace, and other fields. Their core function is to achieve high-precision position feedback by detecting the angular displacement of a rotating shaft. Currently, mainstream inductive encoders on the market have diverse requirements for shaft mounting methods, mainly employing the following technical solutions:

[0003] 1. Keyway connection: Torque transmission between the shaft and the sensor is achieved through a flat key or spline, but it requires high shaft machining accuracy and is complex to install;

[0004] 2. Clamping flange: The shaft end is fixed by bolts or hydraulic devices, which poses a risk of axial movement and is prone to loosening after long-term use;

[0005] 3. Spring clamping: The shaft surface is clamped by an elastic metal sheet. It is easy to install but is prone to wear, and its service life is limited by the surface quality of the shaft system.

[0006] 4. Non-contact magnetic attraction: This method uses electromagnetic adsorption to fix the shaft, which reduces wear but is more expensive and has special requirements for the shaft material.

[0007] The main problem with the existing technology is that the variety of installation methods leads to poor compatibility. Different shaft systems (such as irregular shafts, non-standard shafts, hollow shafts, etc.) require matching sensor modules with different structures, which increases user costs and maintenance difficulty.

[0008] Traditional sensors, which suffer from poor compatibility, inefficient installation, and high maintenance costs, can no longer meet market demands. Breakthroughs are urgently needed in areas such as modular design, quick-installation interfaces, and dynamic compensation to adapt to the trends of flexibility, high precision, and low cost in intelligent manufacturing. Utility Model Content

[0009] Based on the above-mentioned situation of the prior art, the purpose of this utility model embodiment is to provide a modular quick-installation interface device for electromagnetic angular displacement sensors compatible with multiple axis systems. The interface standardization is achieved through the bushing adapter module, and the replaceable standardized interface components are compatible with different axis system types.

[0010] To achieve the above objectives, according to one aspect of this utility model, a modular quick-installation interface device for an electromagnetic angular displacement sensor compatible with multiple axes is provided, comprising an optical platform, a motor, an encoder module, a bushing adapter module, and a top plate; the motor, encoder module, and bushing adapter module are sequentially connected and disposed between the optical platform and the top plate from bottom to top;

[0011] The bushing adapter module includes an XY-axis displacement unit and a Z-axis displacement unit. The lower end face of the XY-axis displacement unit is fixed to the Z-axis displacement unit by a fixing unit. One side of the XY-axis displacement unit is provided with an X-direction adjustment knob, and the other side of the XY-axis displacement unit is provided with a Y-direction adjustment knob. The one side and the other side are adjacent sides. The side of the Z-axis displacement unit is provided with a Z-direction adjustment knob.

[0012] Furthermore, the X-direction adjustment knob is used for X-axis displacement adjustment, the Y-direction adjustment knob is used for Y-axis displacement adjustment, and the Z-direction adjustment knob is used for Z-axis displacement adjustment.

[0013] Furthermore, a conical spring is connected to the end of the X-direction adjustment knob, and the X-axis displacement is adjusted by the conical spring.

[0014] Furthermore, the end of the Z-direction adjustment knob is connected to a self-locking ratchet, through which the Z-axis displacement is adjusted.

[0015] Furthermore, the device also includes a motor adapter plate, through which the motor is connected to the optical platform.

[0016] Furthermore, the encoder module includes a rotor adapter plate, an encoder rotor, an encoder stator, and a stator adapter plate;

[0017] The rotor adapter plate, encoder rotor, encoder stator and stator adapter plate are connected in sequence from bottom to top. The lower end face of the rotor adapter plate is connected to the motor and the upper end face of the stator adapter plate is connected to the bushing adapter module.

[0018] Furthermore, the device also includes a plurality of side posts, which are evenly distributed on the outer periphery of the motor adapter plate and connected between the optical platform and the top plate.

[0019] Furthermore, the plurality of side pillars are threadedly connected to the top plate by a plurality of fastening screws.

[0020] Furthermore, the fixing unit includes a fixing plate and fastening screws.

[0021] In summary, this utility model embodiment provides a modular quick-install interface device for a multi-axis compatible electromagnetic angular displacement sensor, including an optical platform, a motor, an encoder module, a bushing adapter module, and a top plate. The motor, encoder module, and bushing adapter module are sequentially connected between the optical platform and the top plate from bottom to top. The bushing adapter module includes an XY-axis displacement unit and a Z-axis displacement unit. The lower end face of the XY-axis displacement unit is fixed to the Z-axis displacement unit by a fixing unit. One side of the XY-axis displacement unit is provided with an X-direction adjustment knob, and the other side is provided with a Y-direction adjustment knob. These two sides are adjacent to each other. The side of the Z-axis displacement unit is provided with a Z-direction adjustment knob. The technical solution provided by this utility model embodiment achieves interface standardization through the bushing adapter module, and can be compatible with different axis types by using replaceable standardized interface components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the modular quick-installation interface device for the electromagnetic angular displacement sensor provided in this embodiment of the utility model;

[0023] Figure 2 This is a perspective view of the bushing adapter module according to an embodiment of this utility model;

[0024] Figure 3 This is a side view of the bushing adapter module according to an embodiment of the present utility model;

[0025] Figure 4 This is a front view of the bushing adapter module according to an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Optical platform; 2-Motor adapter plate; 3-Motor; 4-Rotor adapter plate; 5-Encoder rotor; 6-Encoder stator; 7-Stator adapter plate; 8-Encoder module; 9-Side column; 10-Top plate; 11-Shaft sleeve adapter module; 13-Self-locking ratchet; 14-X-direction adjustment knob; 15-Conical spring; 16-Z-direction adjustment knob; 17-XY-axis displacement unit; 18-Z-axis displacement unit; 19-Fixing iron plate; 20-Y-direction adjustment knob. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in one or more embodiments of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0030] The development trend of electromagnetic angular displacement sensors is towards modular design, dynamic alignment technology, and intelligent integration. Modular design enables rapid adaptation of sensors to different shaft systems through standardized interfaces and replaceable components. Dynamic alignment technology refers to the introduction of mechanical or electronic compensation mechanisms to improve tolerance to shaft eccentricity, runout, and other tolerances. Intelligent integration refers to the combination of sensor fusion technology to monitor the installation status in real time and automatically optimize parameters.

[0031] Among existing electromagnetic angular displacement sensors, common types include traditional keyway / flange-type inductive encoders and spring-clamping inductive encoders. Traditional keyway / flange-type inductive encoders use a keyed or splined shaft that precisely fits into the sensor's inner bore, with a flange secured by bolts for rigid connection. The sensor housing is also rigidly connected to the motor flange surface via bolts, ensuring axial and radial alignment. The installation process involves pre-machining a keyway or spline at the motor shaft end, inserting the sensor shaft into the motor shaft, aligning it using the key or spline, and tightening the flange bolts to complete the mechanical fixation. In spring-clamping inductive encoders, the spring metal sheet is typically made of phosphor bronze or stainless steel, in a C-shape or spiral shape, and clamps the shaft surface with pre-compression force. The friction between the metal sheet and the shaft transmits torque, eliminating the need for a keyway or flange. The installation process involves directly fitting the sensor shaft onto the motor shaft, rotating the lock nut or pressure plate to compress the spring sheet and generate clamping force, and then powering on for use. However, these sensors suffer from technical problems such as low installation efficiency, poor tolerance adaptability, high maintenance costs, and limited application scenarios. Specifically, traditional sensors require dedicated interfaces for different shaft systems such as keyway shafts, hollow shafts, and irregularly shaped shafts. This necessitates users stocking multiple sensor models, increasing costs and management complexity. Furthermore, structures like keyways and flanges rely on high-precision machining and complex assembly processes, which are time-consuming and require highly skilled operators. Rigid structures like keyways and clamping flanges have low tolerance for shaft eccentricity and runout (typically ≤0.02mm), and machining errors can easily lead to decreased measurement accuracy or even failure. Traditional structures struggle to compensate for equipment vibration or slight shaft displacement in real time, impacting long-term reliability. Spring-clamping structures require periodic replacement due to wear, and recalibration is necessary after replacement, resulting in high maintenance costs. Low modularity necessitates complete replacement for upgrades or component changes, increasing costs. Specialized shaft systems (such as hollow shafts and flexible shafts) require dedicated sensors, limiting market expansion.

[0032] To address the technical problem that existing inductive encoders rely on different structures such as keyways, clamping flanges, and spring clips for shaft mounting, resulting in the same sensor being unable to adapt to various shaft diameters and end shapes (such as smooth shafts, keyed shafts, and flanged shafts), and requiring dedicated interface components for different shaft systems, significantly increasing spare parts costs and assembly complexity, this invention achieves interface standardization through a shaft sleeve adapter module. It utilizes replaceable standardized interface components to ensure compatibility with different shaft types. Traditional clamping flange or spring clip structures rely on mechanical stress to fix the shaft system, which is prone to stress relaxation during equipment vibration or slight shaft deflection. This leads to a decrease in the dynamic alignment between the sensor and the shaft system, resulting in phase errors and zero-point drift in the electromagnetic induction signal.

[0033] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings. An embodiment of this utility model provides a modular quick-installation interface device for a multi-axis compatible electromagnetic angular displacement sensor. Figure 1The diagram shows the overall structure of the modular quick-release interface device for the multi-axis compatible electromagnetic angular displacement sensor of this invention. Figure 1 As shown, the device includes an optical platform 1, a motor 3, an encoder module 8, a bushing adapter module 11, and a top plate 10. The motor 3, encoder module 8, and bushing adapter module 11 are sequentially connected and arranged between the optical platform 1 and the top plate 10 from bottom to top.

[0034] The optical platform 1, for example, is a rectangular platform located at the bottom of the entire device, and can directly contact the horizontal surface on which the device is placed. A motor adapter plate 2 and a motor 3 are located on the upper part of the optical platform 1, with the motor 3 connected to the optical platform 1 via the motor adapter plate 2. In this embodiment of the invention, the motor 3 is a high-precision motor. A high-precision motor refers to a motor with high positioning accuracy, low vibration, low noise, high response speed, and high stability, such as a servo motor, stepper motor, or brushless DC motor.

[0035] An encoder module 8 is provided on the upper part of the motor 3. The encoder module 8 includes a rotor adapter plate 4, an encoder rotor 5, an encoder stator 6, and a stator adapter plate 7. The rotor adapter plate 4, encoder rotor 5, encoder stator 6, and stator adapter plate 7 are connected in sequence from bottom to top. The lower end face of the rotor adapter plate 4 is connected to the motor 3, and the upper end face of the stator adapter plate 7 is connected to the bushing adapter module 11.

[0036] Figure 2 The figure shows a perspective view of the bushing adapter module according to an embodiment of the present invention. Figure 3 The image shows a side view of the bushing adapter module according to an embodiment of the present invention. Figure 4 The image shows a front view of the bushing adapter module according to an embodiment of the present invention, as shown below. Figures 2-4 As shown, the bushing adapter module includes an XY-axis displacement unit 17 and a Z-axis displacement unit 18. The lower end face of the XY-axis displacement unit 17 is fixed to the Z-axis displacement unit 18 by a fixing unit, such as a fixing iron plate 19 and a fastening screw. One side of the XY-axis displacement unit 17 is provided with an X-direction adjustment knob 14, and the other side of the XY-axis displacement unit 17 is provided with a Y-direction adjustment knob 20. The one side and the other side are adjacent sides. The side of the Z-axis displacement unit 18 is provided with a Z-direction adjustment knob 16. In this embodiment of the invention, the XY-axis displacement unit 17 can be achieved through the cooperation of a guide rail, a slider, and a screw transmission mechanism to achieve radial alignment. The Z-axis displacement unit 18 is located below the XY-axis displacement unit 17 and is used to realize the lifting and lowering of the entire module in the Z-direction, thereby realizing axial adjustment.

[0037] The X-axis adjustment knob 14 is used for X-axis displacement adjustment, the Y-axis adjustment knob 20 for Y-axis displacement adjustment, and the Z-axis adjustment knob 16 for Z-axis displacement adjustment. A conical spring 15 is connected to the end of the X-axis adjustment knob 14, which adjusts the X-axis displacement. This conical spring 15 does not directly generate displacement but provides a reverse preload and eliminates backlash. The screw at the end of the X-axis adjustment knob 14 rests on the slide, while the other side is held in place by the conical spring 15, thus achieving high sensitivity and stability in adjustment and preventing spontaneous offset under vibration. A self-locking ratchet 13 is connected to the end of the Z-axis adjustment knob 16, which adjusts the Z-axis displacement. The self-locking ratchet 13 converts the rotational motion of the Z-axis adjustment knob 16 into linear stepping motion, thereby controlling the distance between the sensor and the shaft end face. In addition, the self-locking ratchet 13 has a one-way locking feature, which allows the module to be raised by rotating the knob upwards, but automatically prevents accidental descent caused by any reverse force (such as gravity or vibration), thereby ensuring the stability of the signal during operation.

[0038] The bushing adapter module provided in this embodiment of the utility model can be selected with an adapter. The adapter is aligned with the keyway adapter hole and pressed axially. The shaft system fit clearance is eliminated by adjusting the knob to rotate and lock. Zeroing can then begin. The whole process does not require tools.

[0039] According to some optional embodiments, the device also includes a plurality of side pillars 9, such as Figure 1 As shown, in this embodiment of the invention, four side posts 9 are provided. The side posts 9 are evenly distributed on the outer periphery of the motor adapter plate 2 and connected between the optical platform 1 and the top plate 10. The side posts 9 can be threadedly connected to the top plate 10 by multiple fastening screws.

[0040] In summary, this utility model embodiment relates to a modular quick-install interface device for a multi-axis compatible electromagnetic angular displacement sensor, including an optical platform, a motor, an encoder module, a bushing adapter module, and a top plate; the motor, encoder module, and bushing adapter module are sequentially connected and arranged between the optical platform and the top plate from bottom to top; the bushing adapter module includes an XY-axis displacement unit and a Z-axis displacement unit, the lower end face of the XY-axis displacement unit is fixed to the Z-axis displacement unit by a fixing unit, one side of the XY-axis displacement unit is provided with an X-direction adjustment knob, the other side of the XY-axis displacement unit is provided with a Y-direction adjustment knob, and the one side and the other side are adjacent sides; the side of the Z-axis displacement unit is provided with a Z-direction adjustment knob. The technical solution provided by this utility model embodiment achieves interface standardization through a bushing adapter module, and can be compatible with different shaft types by using replaceable standardized interface components; it introduces a dynamic centering adjustment mechanism, and achieves real-time adaptive calibration of the shaft system through a flexible contact design with controllable preload; it adopts a multi-level positioning and locking structure, combined with a wear-resistant coating and an error-proof coding structure, which can ensure the repeatability of the quick-installation interface.

[0041] It should be understood that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model (including the claims) is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this utility model as described above, which are not provided in the details for the sake of brevity. The above specific embodiments of this utility model are merely for illustrative purposes to illustrate or explain the principles of this utility model and do not constitute a limitation on this utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims of this utility model are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A modular quick-installation interface device for an electromagnetic angular displacement sensor compatible with multiple axes, characterized in that, It includes an optical platform (1), a motor (3), an encoder module (8), a bushing adapter module (11), and a top plate (10); the motor (3), the encoder module (8), and the bushing adapter module (11) are sequentially connected and arranged between the optical platform (1) and the top plate (10) from bottom to top; The bushing adapter module (11) includes an XY axis displacement unit (17) and a Z axis displacement unit (18). The lower end face of the XY axis displacement unit (17) is fixed to the Z axis displacement unit (18) by a fixing unit. One side of the XY axis displacement unit (17) is provided with an X direction adjustment knob (14), and the other side of the XY axis displacement unit (17) is provided with a Y direction adjustment knob (20). The one side and the other side are adjacent sides. The side of the Z axis displacement unit (18) is provided with a Z direction adjustment knob (16).

2. The apparatus according to claim 1, characterized in that, The X-direction adjustment knob (14) is used for X-axis displacement adjustment, the Y-direction adjustment knob (20) is used for Y-axis displacement adjustment, and the Z-direction adjustment knob (16) is used for Z-axis displacement adjustment.

3. The apparatus according to claim 2, characterized in that, The end of the X-direction adjustment knob (14) is connected to a conical spring (15), and the X-axis displacement is adjusted by the conical spring (15).

4. The apparatus according to claim 2, characterized in that, The Z-direction adjustment knob (16) is connected to a self-locking ratchet (13) at its end, and the Z-axis displacement is adjusted by the self-locking ratchet (13).

5. The apparatus according to claim 3 or 4, characterized in that, The device also includes a motor adapter plate (2), through which the motor (3) is connected to the optical platform (1).

6. The apparatus according to claim 5, characterized in that, The encoder module (8) includes a rotor adapter plate (4), an encoder rotor (5), an encoder stator (6), and a stator adapter plate (7); The rotor adapter plate (4), encoder rotor (5), encoder stator (6) and stator adapter plate (7) are connected in sequence from bottom to top. The lower end face of the rotor adapter plate (4) is connected to the motor (3), and the upper end face of the stator adapter plate (7) is connected to the bushing adapter module (11).

7. The apparatus according to claim 6, characterized in that, The device also includes a plurality of side posts (9), which are evenly distributed on the outer periphery of the motor adapter plate (2) and connected between the optical platform (1) and the top plate (10).

8. The apparatus according to claim 7, characterized in that, The multiple side pillars (9) are threaded to the top plate (10) by multiple fastening screws.

9. The apparatus according to claim 8, characterized in that, The fixing unit includes a fixing iron plate (19) and a fastening screw.

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