Rotary encoder comparison test tool

Abstract

The utility model belongs to the technical field of encoder auxiliary equipment, and relates to a rotary encoder comparison test tool, which comprises a bottom plate and a double-shaft motor fixed on the bottom plate through a mounting bracket, and the bottom plate is also provided with a first three-dimensional moving sliding table and a second three-dimensional moving sliding table, the first three-dimensional moving sliding table and the second three-dimensional moving sliding table are arranged on the left side and the right side of the installation support respectively, and a first encoder rotationally connected with a first output shaft of the double-shaft motor and a second encoder rotationally connected with a second output shaft of the double-shaft motor are installed on the first three-dimensional moving sliding table and the second three-dimensional moving sliding table respectively. According to the utility model, a modularized design scheme is adopted, many-to-many comparison test can be realized, so that the state of the detected encoder can be judged more accurately, errors caused by shaft-to-shaft non-concentricity due to machining and installation can be reduced by moving the sliding table, and the device has the advantages of high detection precision, high efficiency, simple structure, stability, reliability and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of encoder auxiliary equipment, specifically relating to a rotary encoder comparison test fixture. Background Technology

[0002] Encoders are a crucial component of servo motors, and their performance determines the quality of servo control. When designing or selecting encoders, it's often necessary to compare the performance of different encoders, with common metrics including resolution, repeatability, and absolute accuracy. Therefore, designing an encoder comparison test fixture is essential. A typical encoder test fixture involves mounting a standard encoder on one end of the motor shaft and the encoder under test on the other, comparing their output signals. Current testing methods mostly involve fixing the motor and encoder under test to a chassis for single-product testing, which has the following drawbacks: 1. The replaceability of the first encoder in the entire setup is poor, the comparison signal is limited, making it a one-to-many type test fixture, unable to achieve arbitrary cross-comparison testing of multiple encoders; 2. The encoder bearing housing is not adjustable during installation and replacement, making it difficult to ensure concentricity between the encoder bearing housing and the motor shaft, thus affecting the encoder test results. Utility Model Content

[0003] The purpose of this invention is to address the defects and shortcomings in the existing technology by designing a rotary encoder comparison test fixture that is simple in structure, stable and reliable, convenient and effective, and improves efficiency while reducing errors.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rotary encoder comparison test fixture, including a base plate and a dual-axis motor fixed on the base plate by a mounting bracket. The base plate is also provided with a first three-dimensional moving slide and a second three-dimensional moving slide. The first three-dimensional moving slide and the second three-dimensional moving slide are respectively arranged on the left and right sides of the mounting bracket, and a first encoder rotatably connected to the first output shaft of the dual-axis motor and a second encoder rotatably connected to the second output shaft of the dual-axis motor are respectively mounted on the first three-dimensional moving slide and the second three-dimensional moving slide.

[0005] Preferably, both the first three-dimensional moving slide and the second three-dimensional moving slide are capable of moving in the XYZ directions.

[0006] Preferably, the first encoder is detachably mounted on the first three-dimensional moving slide via a first bearing housing adapted thereto.

[0007] Preferably, the mounting surface of the first three-dimensional moving slide has a first connecting hole that mates with the first mounting hole on the first bearing seat.

[0008] Preferably, the second encoder is detachably mounted on the second three-dimensional moving slide via a second bearing housing adapted thereto.

[0009] Preferably, the mounting surface of the second three-dimensional moving slide has a second connecting hole that mates with the second mounting hole on the second bearing seat.

[0010] Preferably, the first encoder and the first output shaft, as well as the second encoder and the second output shaft, are connected by couplings.

[0011] After adopting the above technical solution, the rotary encoder comparison test fixture provided by this utility model has the following beneficial effects:

[0012] (1) The modular assembly method of this utility model can reduce the time spent on installation and improve testing efficiency;

[0013] (2) The modular replacement scheme of this utility model can test different models of encoders, thereby increasing the utilization rate of tooling;

[0014] (3) This utility model, through the design of a three-dimensional moving slide, can adjust the position as needed, thereby increasing the accuracy of encoder testing;

[0015] (4) This utility model can more accurately determine the state of the encoder through a many-to-many comparison test scheme. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rotary encoder comparative testing fixture according to the present invention;

[0017] Figure 2 This is the front view of a rotary encoder comparison test fixture of this utility model.

[0018] The components include: base plate 1, mounting bracket 2, dual-axis motor 3, first three-dimensional moving slide 4, second three-dimensional moving slide 5, first output shaft 6, first encoder 7, second output shaft 8, second encoder 9, first bearing seat 10, second bearing seat 11, and coupling 12. Detailed Implementation

[0019] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] 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.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] This utility model provides a rotary encoder comparison test fixture, such as... Figure 1-2 As shown, the system includes a base plate 1 and a dual-axis motor 3 fixed to the base plate 1 via a mounting bracket 2. The base plate 1 also has a first three-dimensional moving slide 4 and a second three-dimensional moving slide 5, which are respectively located on the left and right sides of the mounting bracket 2 and on the left and right sides of the dual-axis motor 3. Specifically, both the first three-dimensional moving slide 4 and the second three-dimensional moving slide 5 can move in the X, Y, and Z directions. A first encoder 7, rotatably connected to the first output shaft 6 of the dual-axis motor 3, and a second encoder 7, rotatably connected to the second output shaft 8 of the dual-axis motor 3, are respectively mounted on the first three-dimensional moving slide 4 and the second three-dimensional moving slide 5. Specifically, the first encoder 7 is detachably mounted on the first three-dimensional moving slide 4 via a first bearing seat 10 adapted thereto. The mounting surface of the first three-dimensional moving slide 4 has a first connecting hole that mates with the first mounting hole on the first bearing seat 10. The second encoder 9 is detachably mounted on the second three-dimensional moving slide 5 via a second bearing seat 11 adapted thereto. The mounting surface of the second three-dimensional moving slide 5 has a second connecting hole that mates with the second mounting hole on the second bearing seat 11. Furthermore, the first encoder 7 and the first output shaft 6, as well as the second encoder 9 and the second output shaft 8, are connected by couplings 12.

[0026] This utility model discloses a rotary encoder comparison test fixture. During the rotation test, the signal output by the first encoder 7 is used as a reference signal. By adjusting the rotation speed of the dual-axis motor 3, different states can be simulated. By comparing the signals of the two encoders, the dynamic operating characteristics of the second encoder 9 at different speeds can be obtained. This allows for comprehensive detection and analysis of the dynamic characteristics of the encoder at different speeds.

[0027] When the second encoder 9 under test needs to be replaced, if the encoder is of the same model, the second encoder 9 under test is removed from the second bearing housing 11 and the new encoder is directly replaced; if the encoder is of a different model, the second encoder 9 under test and its second bearing housing 11 are removed from the second three-dimensional moving slide 5 and the new encoder and its bearing housing are installed.

[0028] When the first encoder 7, which serves as the reference, needs to be replaced, if the same model encoder is to be replaced, the reference first encoder 7 is removed from the first bearing housing 10, and then the new encoder is directly replaced; if a different model encoder is to be replaced, the reference first encoder 7 and its first bearing housing 10 are to be removed from the first three-dimensional moving slide 4 as a whole, and the new model reference encoder and its bearing housing are to be installed.

[0029] In summary, the rotary encoder comparison test fixture provided by this utility model adopts a modular design scheme, which can realize many-to-many comparison tests, thereby more accurately determining the state of the encoder under test. It also reduces the error caused by shaft misalignment due to machining and installation by moving the slide table. It has the advantages of high detection accuracy, high efficiency, simple structure, stability and reliability, and has great market value, and is worthy of widespread promotion and application.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rotary encoder comparison test fixture, characterized in that: The system includes a base plate (1) and a dual-axis motor (3) fixed on the base plate (1) by a mounting bracket (2). The base plate (1) is also provided with a first three-dimensional moving slide (4) and a second three-dimensional moving slide (5). The first three-dimensional moving slide (4) and the second three-dimensional moving slide (5) are respectively arranged on the left and right sides of the mounting bracket (2). The first three-dimensional moving slide (4) and the second three-dimensional moving slide (5) are respectively equipped with a first encoder (7) rotatably connected to the first output shaft (6) of the dual-axis motor (3) and a second encoder (9) rotatably connected to the second output shaft (8) of the dual-axis motor (3).

2. The rotary encoder comparison test fixture according to claim 1, characterized in that: Both the first three-dimensional moving slide (4) and the second three-dimensional moving slide (5) can move in the XYZ directions.

3. The rotary encoder comparison test fixture according to claim 1, characterized in that: The first encoder (7) is detachably mounted on the first three-dimensional moving slide (4) via a first bearing seat (10) that is adapted to it.

4. The rotary encoder comparison test fixture according to claim 3, characterized in that: The first three-dimensional moving slide (4) has a first connecting hole on its mounting surface that mates with the first mounting hole on the first bearing seat (10).

5. The rotary encoder comparison test fixture according to claim 1, characterized in that: The second encoder (9) is detachably mounted on the second three-dimensional moving slide (5) via a second bearing seat (11) that is adapted to it.

6. The rotary encoder comparison test fixture according to claim 5, characterized in that: The second three-dimensional moving slide (5) has a second connecting hole on its mounting surface that mates with the second mounting hole on the second bearing seat (11).

7. The rotary encoder comparison test fixture according to claim 1, characterized in that: The first encoder (7) and the first output shaft (6), as well as the second encoder (9) and the second output shaft (8), are connected by a coupling (12).

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