Encoder spindle centering adjustment device

Abstract

The utility model discloses a kind of encoder spindle centering adjusting device, it is related to precision machinery adjusting technical field, comprising: base, horizontal adjusting component and longitudinal adjusting component;The horizontal adjusting component includes elastic base, two X direction adjusting components and two Y direction adjusting components, the elastic base is detachably connected on the top of the base;Each the X direction adjusting component and the Y direction adjusting component are oppositely arranged on the both sides of the base, the fixed part of the X direction adjusting component and the Y direction adjusting component is fixed in the base, and adjusting part is abutted in the elastic base;The longitudinal adjusting component is detachably connected on the top of the elastic base, through hole for installing encoder spindle is opened on the longitudinal adjusting component, ensure integrated X, Y, Z three-axis fine adjustment function, and have gapless, high resolution, the special adjusting device of convenient operation, realize that encoder can carry out efficient and high-precision calibration.

Description

Technical Field

[0001] This utility model relates to the field of precision mechanical adjustment technology, and more specifically to an encoder spindle centering adjustment device. Background Technology

[0002] In fields such as precision measurement, automation control, and high-end equipment manufacturing, encoders, as core angle or position sensors, directly determine the performance of the entire system due to their inherent accuracy. During factory calibration or periodic verification of encoders, it is crucial to ensure extremely high coaxiality between the mounting spindle and the standard axis of the testing equipment. Any slight eccentricity will directly introduce measurement errors, leading to inaccurate calibration results.

[0003] Currently, traditional techniques for achieving spindle alignment in encoder calibration face significant bottlenecks, primarily including: **Shim Adjustment Method:** This involves manually adjusting the alignment between the calibration fixture and the encoder flange by adding or removing metal shims of varying thicknesses to correct eccentricity. This method is extremely cumbersome, heavily reliant on the operator's feel and experience, has a long adjustment cycle, and struggles to achieve sub-micron level precision. **Set Screw Adjustment Method:** This method involves arranging multiple set screws on the calibration fixture, using tightening or loosening them to "pry" the encoder housing and move the spindle slightly. While simple in structure, this method suffers from significant backlash, low adjustment accuracy, poor repeatability, and the point contact between the set screws and the housing can easily generate localized stress, posing a risk of encoder damage. **Complete Replacement or Repair Method:** For cases where simple adjustments cannot meet alignment requirements, customized repair fixtures or replacement of the entire connecting assembly are typically used. This method is costly, time-consuming, and represents a reactive measure, failing to achieve rapid, online, high-precision adjustments. Therefore, existing encoder spindle alignment methods generally suffer from inherent defects such as low adjustment accuracy, reliance on manual experience, low efficiency, and susceptibility to secondary errors.

[0004] Therefore, in view of the existing problems, how to provide an encoder spindle alignment adjustment device that can ensure integrated X, Y, and Z axis fine adjustment functions, and has a dedicated adjustment device with zero backlash, high resolution, and convenient operation, so as to enable the encoder to perform efficient and high-precision calibration, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides an encoder spindle alignment adjustment device that can ensure integrated X, Y, and Z axis fine adjustment functions, and has a dedicated adjustment device with zero backlash, high resolution, and convenient operation, enabling the encoder to perform efficient and high-precision calibration.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An encoder spindle alignment adjustment device includes: a base, a horizontal adjustment component, and a vertical adjustment component;

[0008] The horizontal adjustment assembly includes an elastic base, two X-axis adjustment components and two Y-axis adjustment components. The elastic base is detachably connected to the top of the base. Each X-axis adjustment component and each Y-axis adjustment component are arranged opposite to each other on both sides of the base. The fixing part of the X-axis adjustment component and the Y-axis adjustment component is fixed to the base, and the adjustment part abuts against the elastic base.

[0009] The longitudinal adjustment component is detachably connected above the elastic base, and the longitudinal adjustment component has a through hole for mounting the encoder spindle.

[0010] Through the above technical solution, this utility model provides an encoder spindle centering adjustment device. By adjusting the three axes in a coordinated manner, it achieves integrated X, Y, and Z axis fine-tuning functions, accurately centering the spatial position of the encoder spindle. At the same time, the abutting cooperation between the elastic base and the adjustment components eliminates mechanical clearance, providing micron-level adjustment accuracy. Furthermore, each component is detachable, facilitating quick installation, maintenance, and replacement, reducing maintenance costs, significantly improving centering adjustment efficiency, reducing reliance on manual experience, and avoiding the introduction of secondary errors.

[0011] Preferably, in the above-described encoder spindle alignment adjustment device, each X-axis adjustment component includes a first T-shaped mounting plate and a first adjusting screw. The horizontal plate of the first T-shaped mounting plate is detachably connected to the base, and the vertical plate of the first T-shaped mounting plate corresponds to the elastic base. One end of the first adjusting screw is threadedly connected to the vertical plate of the first T-shaped mounting plate and extends to the outside of the vertical plate, abutting against the elastic base. High-resolution displacement adjustment in the X-axis direction is achieved through screw thread transmission. Simultaneously, the T-shaped mounting plate provides stable support, ensuring uniform force on the base during adjustment. Moreover, the threaded adjustment method is simple and reliable, facilitating quantitative control and fine adjustment.

[0012] Preferably, in the above-mentioned encoder spindle alignment adjustment device, each Y-axis adjustment component includes a second T-shaped mounting plate and a second adjustment screw. The horizontal plate of the second T-shaped mounting plate is detachably connected to the base, and the vertical plate of the second T-shaped mounting plate corresponds to the elastic base. One end of the second adjustment screw is threadedly connected to the vertical plate of the second T-shaped mounting plate and extends to the outside of the vertical plate, abutting against the elastic base. This achieves independent Y-axis adjustment, which, together with the X-axis adjustment, constitutes a complete horizontal plane adjustment. The same T-shaped structure as the X-axis adjustment ensures the consistency and stability of the adjustment mechanism. Simultaneously, the threaded abutment method ensures reliable position locking after adjustment.

[0013] Preferably, in the above-mentioned encoder spindle alignment adjustment device, a groove is formed along the length of the vertical plate of the second T-shaped mounting plate, and the second adjusting screw passes through the groove. The screw can move within the groove to adapt to the adjustment requirements of elastic bases of different specifications, and also facilitates the pre-installation positioning and quick alignment of the adjustment components. At the same time, it can expand the applicability of the device and is compatible with various encoder mounting sizes.

[0014] Preferably, in the above-mentioned encoder spindle alignment adjustment device, the longitudinal adjustment component includes a flange body and a third adjusting screw. The flange body is detachably connected to the elastic base, and the flange body has the through hole. One end of the third adjusting screw is threaded onto the flange body and extends to the bottom wall of the flange body, abutting against the elastic base. This allows for fine-tuning of the encoder spindle height, achieving three-dimensional spatial alignment. The flange body provides a stable mounting reference surface for the encoder spindle. Furthermore, the integrated design of longitudinal adjustment and spindle mounting reduces space occupation.

[0015] Preferably, in the above-mentioned encoder spindle alignment adjustment device, the longitudinal adjustment component further includes a buffer washer, which is sleeved on the third adjusting screw and located between the nut of the third adjusting screw and the flange body. This absorbs external vibrations and impacts, maintains stable adjustment accuracy, provides preload to prevent the screw from loosening due to vibration, maintains long-term alignment accuracy, and reduces direct friction and wear between the nut and the flange body.

[0016] Preferably, in the encoder spindle alignment adjustment device described above, the longitudinal adjustment component further includes an elastic sleeve, which is fixed to the inner wall of the through hole. This prevents the encoder spindle from directly contacting the rigid through hole, thus preventing surface scratches. Simultaneously, the elastic sleeve can compensate for minor dimensional deviations, improve coaxiality adaptability, and further absorb vibration, thereby enhancing measurement stability and repeatability.

[0017] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an encoder spindle alignment adjustment device, which has the following beneficial effects:

[0018] 1. This utility model achieves precise alignment of the encoder spindle with full degrees of freedom in the spatial coordinate system by integrating X, Y, and Z three-axis linkage fine adjustment functions. It also eliminates mechanical transmission gaps through the abutting cooperation between the elastic base and the adjusting screw, achieving micron-level adjustment resolution.

[0019] 2. This utility model simplifies the installation process and shortens the debugging time through a modular and detachable structure. Standardized adjustment operations reduce reliance on manual experience, significantly improve batch calibration efficiency, and enable rapid online adjustment, avoiding the periodic delays of traditional "disassembly-repair-reinstallation".

[0020] 3. This utility model provides pre-tightening force through the elastic base to ensure stable position without rebound after adjustment. The buffer washer absorbs environmental vibration, effectively preventing the screw from loosening and maintaining long-term alignment accuracy. The elastic rubber sleeve forms a flexible connection between the spindle and the through hole, compensating for minor deviations and suppressing vibration transmission.

[0021] 4. This utility model allows the Y-axis adjustment component to adapt its position through the sliding groove structure, is compatible with encoders of different specifications and sizes, and has a detachable connection design that facilitates maintenance and replacement, extends the service life of the device, and is also suitable for calibration needs in many fields such as precision measurement, automation control and high-end equipment manufacturing.

[0022] 5. This utility model uses an elastic rubber sleeve to prevent scratches on the spindle surface and protect precision parts. The T-shaped mounting plate provides stable support and ensures uniform force during adjustment. In addition, the overall structure is compact, occupies little space, and is easy to operate in confined spaces. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 The attached figure is a structural schematic diagram of the encoder spindle alignment adjustment device provided by this utility model;

[0025] Figure 2 The attached figure is a structural schematic diagram of the longitudinal adjustment component provided by this utility model;

[0026] Figure 3 The attached figure is a schematic diagram of the Y-axis adjustment component provided by this utility model;

[0027] Figure 4 The attached figure is a schematic diagram of the X-axis adjustment component provided by this utility model.

[0028] in:

[0029] 1-Base; 2-Elastic base; 3-X-direction adjustment assembly; 31-First T-shaped mounting plate; 32-First adjusting screw; 4-Y-direction adjustment assembly; 41-Second T-shaped mounting plate; 411-Slide groove; 42-Second adjusting screw; 5-Longitudinal adjustment assembly; 51-Flange body; 52-Third adjusting screw; 53-Buffer washer; 54-Elastic rubber sleeve; 6-Through hole; 7-Elastic base adjustment structure; 71-Base adjusting screw; 72-Base buffer washer; 8-Encoder to be calibrated. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example:

[0032] See appendix Figure 1-4 This utility model discloses an encoder spindle alignment adjustment device, including: a base 1, a horizontal adjustment component and a vertical adjustment component 5;

[0033] The horizontal adjustment assembly includes an elastic base 2, two X-axis adjustment components 3 and two Y-axis adjustment components 4. The elastic base 2 is detachably connected to the top of the base 1. Each X-axis adjustment component 3 and Y-axis adjustment component 4 is arranged opposite to each other on both sides of the base 1. The fixing parts of the X-axis adjustment component 3 and the Y-axis adjustment component 4 are fixed to the base 1, and the adjustment parts are abutted against the elastic base 2.

[0034] The longitudinal adjustment component 5 is detachably connected to the upper part of the elastic base 2, and the longitudinal adjustment component 5 has a through hole 6 for mounting the encoder spindle.

[0035] In a specific example, multiple elastic base adjustment structures 7 are also included. Each elastic base adjustment structure 7 includes a base adjustment screw 71 and a base buffer washer 72. One end of the base adjustment screw 71 is threaded onto the elastic base 2 and extends to the bottom wall of the elastic base 2, abutting against the base 1. The base buffer washer 72 is sleeved on the base adjustment screw 71 and is located between the nut of the base adjustment screw 71 and the elastic base 2.

[0036] In some specific examples, each X-axis adjustment component 3 includes a first T-shaped mounting plate 31 and a first adjustment screw 32. The horizontal plate of the first T-shaped mounting plate 31 is detachably connected to the base 1, and the vertical plate of the first T-shaped mounting plate 31 corresponds to the elastic base 2. One end of the first adjustment screw 32 is threaded to the vertical plate of the first T-shaped mounting plate 31 and extends to the outside of the vertical plate of the first T-shaped mounting plate 31, abutting against the elastic base 2.

[0037] In some other specific embodiments, each Y-axis adjustment component 4 includes a second T-shaped mounting plate 41 and a second adjustment screw 42. The horizontal plate of the second T-shaped mounting plate 41 is detachably connected to the base 1, and the vertical plate of the second T-shaped mounting plate 41 corresponds to the elastic base 2. One end of the second adjustment screw 42 is threaded to the vertical plate of the second T-shaped mounting plate 41 and extends to the outside of the vertical plate of the second T-shaped mounting plate 41, abutting against the elastic base 2.

[0038] In a specific embodiment, a groove 411 is provided on the vertical plate of the second T-shaped mounting plate 41 along its length direction, and the second adjusting screw 42 passes through the groove 411.

[0039] In a specific example, the longitudinal adjustment assembly 5 includes a flange body 51 and a third adjusting screw 52. The flange body 51 is detachably connected to the elastic base 2 and has a through hole 6. One end of the third adjusting screw 52 is threaded to the flange body 51 and extends to the bottom wall of the flange body 51, abutting against the elastic base 2.

[0040] In some instances, the longitudinal adjustment assembly 5 also includes a buffer washer 53, which is fitted onto the third adjusting screw 52 and located between the nut of the third adjusting screw 52 and the flange body 51.

[0041] In some specific embodiments, the longitudinal adjustment component 5 further includes an elastic sleeve 54, which is fixed to the inner wall of the through hole 6.

[0042] In the specific implementation process:

[0043] The spindle alignment adjustment process of the encoder to be calibrated is divided into four main stages:

[0044] S1, Reference Reset:

[0045] By adjusting the base adjusting screw 71, the initial flatness and height of the elastic base 2 are pre-adjusted to establish a precise initial reference plane.

[0046] S2, Spindle Z-axis positioning fine adjustment:

[0047] By uniformly adjusting the third adjusting screw 52 on the flange body 51, the flange body 51 and the elastic rubber sleeve 54 fixed thereon are driven to make a slight translation along the Z-axis direction, so as to accurately set the installation position of the spindle in the Z direction.

[0048] S3, Spindle X / Y axis fine-tuning:

[0049] When it is necessary to adjust the eccentricity of the spindle in the X-axis direction, the first adjusting screw 32 in the X-axis adjusting assembly 3 located in the X-axis direction is adjusted simultaneously. The first adjusting screw 32 pushes the corresponding part of the elastic base 2, causing it to produce controllable, minute elastic bending deformation. The deformation is transmitted through the flange body 51, ultimately driving the spindle to produce precise displacement in the X-axis direction. The Y-axis adjusting assembly 4 located in the Y-axis direction ensures that the deformation is controllable through support and reaction forces.

[0050] When it is necessary to adjust the spindle Y-axis eccentricity, the principle is the same as that of X-axis adjustment, and the operation objects are converted to the Y-axis adjustment component 4 located in the Y direction and the X-axis adjustment component 3 located in the X direction.

[0051] S4. Spindle alignment lock:

[0052] Once the spindle has been precisely adjusted to the target position through the above steps, all base adjusting screws 71, the first adjusting screw 32, and the second adjusting screw 42 are locked, thus completing the entire alignment process, and the device transitions from the adjustment state to the stable working state.

[0053] Throughout the adjustment process, the precise positioning of the spindle is achieved through a standardized procedure of "first the reference, then the axial, and finally the radial." By replacing the rigid sliding of the traditional mechanism with the flexible deformation of the elastic base 2, the return backlash is completely eliminated, achieving high-precision stepless fine adjustment. This simplifies operation and significantly improves efficiency and accuracy.

[0054] The method of use and working principle of this utility model are as follows:

[0055] The elastic base 2 is fixed to the base 1 by the base adjusting screw 71, and the initial reference of the elastic base 2 is adjusted by the base adjusting screw 71; the flange body 51 is fixed to the elastic base 2 by the third adjusting screw 52, ​​and the Z-axis positioning of the encoder 8 spindle to be calibrated is completed by the third adjusting screw 52; the two X-axis adjusting components 3 are respectively located at the center of the adjacent side of the base 1, and the two Y-axis adjusting components 4 are respectively located at the center of the other set of adjacent side of the base 1, and are fixed to the base 1 by the two sets of first adjusting screws 32 and the two sets of second adjusting screws 42 respectively; the encoder 8 spindle to be calibrated is fixed to the flange body 51, and the spindle is fixed in the elastic sleeve 54. By adjusting the corresponding first adjusting screw 32 and second adjusting screw 42, the elastic base 2 is driven to produce controllable deformation, so as to achieve the X-axis and Y-axis alignment of the spindle.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An encoder spindle alignment adjustment device, characterized in that, include: Base (1); A horizontal adjustment assembly includes an elastic base (2), two X-axis adjustment components (3) and two Y-axis adjustment components (4). The elastic base (2) is detachably connected to the upper part of the base (1). Each X-axis adjustment component (3) and each Y-axis adjustment component (4) are arranged opposite to each other on both sides of the base (1). The fixing parts of the X-axis adjustment components (3) and the Y-axis adjustment components (4) are fixed to the base (1), and the adjustment parts abut against the elastic base (2). A longitudinal adjustment component (5) is detachably connected above the elastic base (2), and a through hole (6) for mounting the encoder spindle is provided on the longitudinal adjustment component (5).

2. The encoder spindle alignment adjustment device according to claim 1, characterized in that, Each of the X-axis adjustment components (3) includes a first T-shaped mounting plate (31) and a first adjustment screw (32). The horizontal plate of the first T-shaped mounting plate (31) is detachably connected to the base (1), and the vertical plate of the first T-shaped mounting plate (31) corresponds to the elastic base (2). One end of the first adjustment screw (32) is threaded to the vertical plate of the first T-shaped mounting plate (31) and extends to the outside of the vertical plate of the first T-shaped mounting plate (31), abutting against the elastic base (2).

3. The encoder spindle alignment adjustment device according to claim 1, characterized in that, Each of the Y-axis adjustment components (4) includes a second T-shaped mounting plate (41) and a second adjustment screw (42). The horizontal plate of the second T-shaped mounting plate (41) is detachably connected to the base (1), and the vertical plate of the second T-shaped mounting plate (41) corresponds to the elastic base (2). One end of the second adjustment screw (42) is threaded to the vertical plate of the second T-shaped mounting plate (41) and extends to the outside of the vertical plate of the second T-shaped mounting plate (41), abutting against the elastic base (2).

4. The encoder spindle alignment adjustment device according to claim 3, characterized in that, The second T-shaped mounting plate (41) has a groove (411) along its length on its vertical plate, and the second adjusting screw (42) passes through the groove (411).

5. The encoder spindle alignment adjustment device according to claim 1, characterized in that, The longitudinal adjustment assembly (5) includes a flange body (51) and a third adjusting screw (52). The flange body (51) is detachably connected to the elastic base (2), and the flange body (51) has the through hole (6). One end of the third adjusting screw (52) is threaded to the flange body (51) and extends to the bottom wall of the flange body (51), abutting against the elastic base (2).

6. The encoder spindle alignment adjustment device according to claim 5, characterized in that, The longitudinal adjustment assembly (5) further includes a buffer washer (53), which is sleeved on the third adjusting screw (52) and located between the nut of the third adjusting screw (52) and the flange body (51).

7. The encoder spindle alignment adjustment device according to claim 6, characterized in that, The longitudinal adjustment component (5) also includes an elastic sleeve (54), which is fixed to the inner wall of the through hole (6).

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