Grating encoder detection platform

Abstract

The utility model relates to the technical field of encoders, in particular to a grating encoder detection platform which is composed of a rotary table, a reading head adjusting device, a grating seat and a platform base, multiple layers of gratings are installed on the grating seat, the grating seat is connected with the rotary output end of the rotary table, and in the detection process, the rotary table drives the gratings on the grating seat to rotate; the platform base is installed on a non-rotating part of the rotary table, a plurality of guide rails are arranged on the platform base, each guide rail is provided with a reading head adjusting device, each reading head adjusting device is provided with a plurality of layers of bearing plates used for installing reading heads, and the reading heads on the bearing plates correspond to gratings on the grating seats. According to the utility model, the grating seat can be provided with a plurality of gratings of different types and different sizes, the outer side of each layer of grating is provided with a plurality of bearing plates, and each bearing plate is provided with a reading head, so that batch detection can be carried out on the reading heads of a plurality of encoders at the same time, and the detection efficiency of split encoders is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of encoder technology, specifically providing a grating encoder testing platform. Background Technology

[0002] An optical encoder is a precision angle measuring device that uses a high-precision circular optical grating as its sensing element. It converts angular position information into digital code through photoelectric conversion via a reading head. Due to its advantages such as high measurement accuracy, small size, light weight, reliable operation, and ease of maintenance, it is widely used in precision instruments such as CNC machine tools, robots, and medical devices. Because of the wide range of applications of optical encoders, it is necessary to test the data reading capability of the reading head under different operating temperatures and speeds during the production process.

[0003] Because the reading head of the grating encoder needs to be tested during the production process to detect its data reading capability under different operating temperatures and speeds, the traditional testing method is to conduct independent testing manually. Although the testing accuracy meets the production requirements, when mass production of grating reading heads is required, the manual independent testing method cannot meet the actual production needs. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a multi-purpose grating encoder testing platform. Through mechanical design, it achieves efficient testing of different types of split encoders. The testing platform enables automated testing, solving the problem of time-consuming and labor-intensive manual testing. Furthermore, this invention's testing platform can simultaneously batch test encoders of different types and sizes, and comparative testing can be used to screen for products with superior performance.

[0005] To achieve the above objectives, the technical solution created by this utility model is implemented as follows:

[0006] The grating encoder testing platform provided by this utility model includes: a turntable, a reading head adjustment device, a grating base, and a platform base. The grating base is used to fix the grating for testing. The grating base is connected to the rotating part of the turntable, and the turntable is used to drive the grating base and the grating on it to rotate. The platform base is located outside the grating base and is connected to the non-rotating part of the turntable. The platform base is provided with multiple radial guide rails. The reading head adjustment device is connected to the platform base through the radial guide rails. The reading head is connected to the reading head adjustment device, and the reading head adjustment device is used to adjust the relative position of the reading head and the grating.

[0007] Preferably, the turntable includes: leveling feet, a support plate, a motor, a reducer, a handle, and a turntable. The motor is connected to the support plate, the leveling feet are installed on the lower surface of the support plate, the reducer is connected to the motor, the output end of the reducer is connected to the turntable for driving the grating seat to rotate, and the handle is installed on the non-rotating part of the turntable.

[0008] Preferably, the turntable allows for linear adjustment of rotational speed and acceleration.

[0009] Preferably, the grating base includes at least two grating bases, which are used to mount the grating, and the radial dimensions of the gratings mounted on the different grating bases are the same or different.

[0010] Preferably, the radial guide rail on the platform base is provided with a scale to determine the position of the reading head adjustment device on the radial guide rail.

[0011] Preferably, multiple radial guide rails of equal or non-equal width are evenly distributed on the platform base.

[0012] Preferably, the device includes multiple reading head adjustment devices, each of which includes: a support plate bracket, a reading head pressure plate, and at least two layers of support plates. The support plate bracket is vertically mounted on the platform base via radial guide rails, and the support plates are installed in layers on the support plate bracket to ensure that the reading head is aligned with the grating. The reading head pressure plate is mounted on the support plate to fix the reading head.

[0013] Preferably, the support plate is provided with a scale to determine the relative position of the reading head and the grating on the grating holder.

[0014] Preferably, the type and size of the gratings on different layers of the grating base can be the same or different.

[0015] Preferably, the support plate bracket and the support plate are provided with openings for observing the indicator lights of the reading head.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0017] This invention designs an encoder testing platform that can be used for the efficient testing of various split encoder reading heads, solving the problem of low efficiency in traditional manual testing. This invention features a single unit with multiple sets of reading head adjustment devices, and each reading head adjustment device has multiple layers of support plates on which reading heads are installed. It can test multiple encoder reading heads simultaneously, reducing product testing costs. Furthermore, different types and sizes of mixed assembly tests can be installed on different layers of the reading head adjustment device, greatly improving production efficiency and the versatility of the testing platform.

[0018] This invention can detect the data reading capability of the encoder reading head at different operating speeds by adjusting the rotation speed of the turntable; and it can work normally in a temperature range of -45℃ to 85℃, meeting the detection needs under different temperature conditions.

[0019] This invention is of great significance for the industrialization of high-end encoders. It reduces the cost of testing a single product, greatly improves production efficiency, and enhances equipment utilization and versatility. By adjusting the turntable speed, the data reading capability of different encoder reading heads at different operating speeds can be tested. The platform has a wide operating temperature range. Furthermore, since this invention's testing platform can simultaneously test multiple encoder reading heads, and the mechanical interfaces used to fix the gratings and reading heads all adopt the same design, it is possible to simultaneously test different types and sizes of encoders using this platform, facilitating performance comparison testing of different product models. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of this invention. The illustrative embodiments and descriptions of this invention are used to explain this invention and do not constitute an undue limitation of this invention. In the drawings:

[0021] Figure 1 This is an overall structural diagram of the grating encoder detection platform provided according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a structural diagram of the turntable provided in Embodiment 1 of this utility model;

[0023] Figure 3 This is a structural diagram of the grating disk provided according to Embodiment 1 of this utility model;

[0024] Figure 4 This is a structural diagram of the platform base provided in Embodiment 1 of this utility model;

[0025] Figure 5 This is a side view of the reading head adjustment device according to Embodiment 1 of this utility model;

[0026] Figure 6 This is a perspective structural diagram of the reading head adjustment device according to Embodiment 1 of this utility model;

[0027] Figure 7 This is an overall structural diagram of the grating encoder detection platform provided according to Embodiment 2 of this utility model.

[0028] The reference numerals in the figures include:

[0029] 1. Turntable; 2. Reading head adjustment device; 3. Grating mount; 4. Platform base;

[0030] Leveling foot 101, support plate 102, motor 103, handle 104, reducer 105, turntable 106;

[0031] Support plate bracket 201, support plate 202, lower adjusting block 203, upper adjusting block 204, reading head pressure plate 205, reading head 206, positioning bolt 207;

[0032] Grating base 301, grating 302;

[0033] Platform base plate 401, radial guide rail 402. Detailed Implementation

[0034] To make the purpose, technical solution, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and do not constitute a limitation thereof. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this utility model. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, some operations related to this utility model are not shown or described in the specification. This is to avoid obscuring the core parts of this utility model with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0035] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other to form various implementation methods. Furthermore, the steps or actions in the method description can be rearranged or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various orders in the specification and drawings are merely for the clear description of a particular embodiment and do not imply a mandatory order, unless otherwise stated that a particular order must be followed.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, 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 based on the specific circumstances.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] Please see Figure 1 In Embodiment 1 of this utility model, a grating encoder testing platform is provided, mainly used to test the data reading capability of a split encoder reading head under different working conditions. This testing platform can simultaneously test multiple different types and sizes of split encoders. A split encoder mainly consists of a grating and a reading head. Specifically, the testing platform includes: a turntable 1, a reading head adjustment device 2, a grating holder 3, and a platform base 4. The turntable 1 is the power output unit in the encoder testing process. The turntable 1 drives the grating of the encoder under test to rotate, and the corresponding encoder reading head reads the photoelectric signal to determine the data reading capability of the reading head.

[0040] Please see Figure 2The turntable 1 includes leveling feet 101, a support plate 102, a motor 103, a handle 104, a reducer 105, and a turntable 106. The motor 103 is the power output unit of the turntable 1 and is mounted on the upper surface of the support plate 102. The support plate 102 serves as the foundation structure of the turntable 1, supporting the weight and structure of the entire machine. Multiple leveling feet 101 are evenly distributed on the lower surface of the support plate 102, and the height of each leveling foot 101 can be independently adjusted. By placing the entire machine on the ground or a support platform, the leveling feet 101 can be used to level the machine, ensuring stability on different working surfaces to meet actual working requirements. The output shaft of the motor 103 is connected to the reducer 105. The transmission ratio is adjusted by the reducer 105. Through the cooperation of the motor 103 and the reducer 105, precise speed adjustment and control can be achieved, ensuring the accuracy of the test to meet the detection requirements of the grating encoder. The rotary output end of the reducer 105 is connected to a circular turntable 106. The upper surface of the turntable 106 is similar to a flange structure, which facilitates connection with the grating holder 3. The turntable 1 drives the grating holder 3 and the grating mounted on it to rotate. In addition, in order to facilitate the handling of the grating encoder detection platform, a pair of handles 104 are installed on the non-rotating part of the reducer 105.

[0041] To meet the testing requirements of encoders under different speed conditions, the rotation speed and acceleration of turntable 1 can be linearly adjusted. According to actual testing needs, the rotation speed range provided by turntable 1 for the grating is usually between 0-2500 rpm, which can cover the working speed range of most grating encoders.

[0042] To meet the testing requirements of encoders under different temperature conditions, the operating temperature range of turntable 1 is -45℃ to 85℃, ensuring that turntable 1 can achieve cold start in both high and low temperature environments. According to the requirements of the grating encoder industry standard, this operating temperature range can basically meet the testing requirements of most encoders.

[0043] Please see Figure 3 The rotation output end of the turntable 1 is coaxially connected to the rotating shaft of the grating base 3. The grating base 3 has a multi-layer structure design, with each layer including a grating base 301. The grating 302 of the encoder to be tested can be mounted on the grating base 301 by bolts. To ensure that the grating base 301 can adapt to different types and sizes of encoder gratings, the mechanical interfaces between the grating base 301 and the grating 302 of different layers, as well as the mechanical interfaces between the grating base 301 and its internal rotating shaft, are all designed uniformly. This allows different types and sizes of encoder gratings to be installed on different layers of the grating base 301, enabling the testing platform to test different products simultaneously and facilitating comparative testing of different encoder models. The number of layers in the grating base 3 can be adjusted according to actual needs; at least one layer of grating base 301 can be used.

[0044] Please see Figure 4 The platform base 4 is mounted on the non-rotating part of the turntable 1 and is used to support the reading head adjustment device 2. The platform base 4 includes a platform base plate 401 and radial guide rails 402. The platform base plate 401 is mounted on the housing of the reducer 105 and is a thick circular plate with multiple circular openings. The design of the circular openings can reduce the weight of the platform base plate 401 and achieve overall weight reduction. Eight radial guide rails 402 of equal width are evenly distributed on the upper surface of the platform base plate 401.

[0045] As a preferred embodiment, the width of the radial guide rail 402 can also be designed to be different according to actual design requirements.

[0046] Please see Figure 5 and Figure 6 The reading head adjustment device 2 includes a support plate bracket 201, a support plate 202, a lower adjustment block 203, an upper adjustment block 204, a reading head pressure plate 205, a reading head 206, and a positioning bolt 207. The support plate bracket 201 is slidably mounted on a radial guide rail 402 on the platform base 4. The upper surface of the radial guide rail 402 is engraved with precise graduations to determine the relative position of the support plate bracket 201 on the radial guide rail 402. When the testing platform tests encoders of different sizes, the position of the support plate bracket 201 on the radial guide rail 402 can be adjusted to accommodate the testing of encoders of different sizes. It is understood that the different sizes here mainly refer to the different diameters of the grating 302 of the encoder being tested. Multiple limiting grooves are designed at different graduation positions on both sides of the radial guide rail 402 to facilitate fixing the support plate bracket 201 at the designated graduation position on the radial guide rail 402, preventing displacement of the reading head adjustment device 2 and the reading head 206 mounted on it during the testing process.

[0047] Specifically, a support plate bracket 201 is vertically installed on each radial guide rail 402, and the support plate bracket 201 can slide radially along the radial guide rail 402. The detection platform shown in Embodiment 1 of this utility model has 8 radial guide rails 402 of equal width, and therefore, 8 support plate brackets 201 with the same structure are provided. The structure of any one support plate bracket 201 is described as follows: The support plate bracket 201 is a vertical plate structure with multiple mounting openings for support plates 202 in the vertical direction, which correspond to different layers of gratings 302 on the grating seat 3. Each mounting port on the support plate bracket 201 is fitted with a support plate 202. To ensure the installation stability of the support plate 202, an upper adjusting block 204 and a lower adjusting block 203 are inserted into the mounting port from two directions on the upper and lower surfaces of the support plate 202, respectively, to compress the support plate 202 and ensure the stability of the support plate 202 and its reading head 206 during the testing process. The upper surface of the support plate 202 is engraved with graduations to determine the relative position of the support plate 202 and the mounting port, and thus the relative position of the reading head 206 connected to the support plate 202 and the grating 302 on the grating holder 3. This graduation design effectively improves the positioning accuracy of the support plate 202 during installation and the assembly efficiency of the testing platform.

[0048] A reading head pressure plate 205 is provided at one end of the support plate 202 near the grating seat 3. The reading head pressure plate 205 is used to install the reading head 206 of the encoder being tested, and the reading head pressure plate 205 is fixed to the support plate 202 by positioning bolts 207.

[0049] As a preferred embodiment, in order to facilitate observation of whether the reading head 206 is working properly during the testing process, circular openings are provided on both the support plate bracket 201 and the support plate 202 to ensure that the status indicator light of the encoder reading head 206 can be observed from different angles during the testing process.

[0050] In Embodiment 1 of this utility model, the grating encoder detection platform shown has three layers of gratings 302 installed. Each layer of grating 302 has eight reading heads 206 on its outer side, so 24 reading heads 206 can be detected simultaneously. If it is necessary to increase the number of detectable elements of the grating encoder detection platform, the number of grating bases 301 can be increased, i.e., the number of layers can be increased, or the number of radial guide rails 402 and reading head adjustment devices 2 can be increased, i.e., the number of reading heads 206 corresponding to each layer of grating 302 can be increased.

[0051] Please see Figure 7 In Embodiment 2 of this utility model, a grating encoder detection platform is provided. The difference between the platform and the detection platform in Embodiment 1 is that the grating 302 installed on it is a metal grating with scribe lines on the side.

[0052] The grating encoder testing platform designed in this utility model can not only solve the problem of low efficiency in traditional manual testing, but also can be used to test grating encoders of different types (such as metal gratings and grating code disks) and different sizes, making the testing platform universal.

[0053] By adjusting the rotation speed of turntable 1, the reading performance of encoder reading head 206 at different rotation speeds can be tested.

[0054] By placing the entire machine in a high and low temperature test chamber, the reading performance of the encoder reading head 206 at different temperatures can be tested.

[0055] By mounting different encoder gratings 302 of different models on different layers of the grating mount 3, the performance of different encoder models can be compared and tested.

[0056] Furthermore, the grating encoder testing platform of this utility model can also test only the reading head 206 or the grating 302. For example, if the grating 302 is a standard grating, that is, a grating that has passed the test, the performance of the reading head 206 can be judged by the quality of the reading signal of the reading head 206; or, if the reading head 206 is a standard reading head, that is, a reading head that has passed the test, the marking accuracy of the grating 302 can be judged by the quality of the reading signal of the standard reading head.

[0057] In summary, the above are merely preferred embodiments of this specification and are not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0058] The systems, apparatuses, modules, or units described in one or more of the above embodiments may be implemented by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer. Specifically, a computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0059] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0060] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0061] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

Claims

1. A grating encoder testing platform, characterized in that, include: The system comprises a turntable, a reading head adjustment device, a grating mount, and a platform base. The grating mount is used to fix the grating for detection and is connected to the rotating component of the turntable. The turntable drives the grating mount and the grating thereon to rotate. The platform base is located outside the grating mount and is connected to the non-rotating component of the turntable. The platform base has multiple radial guide rails. The reading head adjustment device is connected to the platform base via these radial guide rails, and the reading head is connected to the reading head adjustment device. The reading head adjustment device is used to adjust the relative position of the reading head and the grating.

2. The grating encoder testing platform as described in claim 1, characterized in that, The turntable includes: leveling feet, a support plate, a motor, a reducer, a handle, and a turntable. The motor is connected to the support plate, the leveling feet are installed on the lower surface of the support plate, the reducer is connected to the motor, and the output end of the reducer is connected to the turntable for driving the grating seat to rotate. The handle is installed on the non-rotating part of the turntable.

3. The grating encoder testing platform as described in claim 1, characterized in that, The turntable can linearly adjust its rotational speed and acceleration.

4. The grating encoder testing platform as described in claim 1, characterized in that, The grating base includes at least two grating bases, which are used to mount the grating. The radial dimensions of the gratings mounted on different grating bases may be the same or different.

5. The grating encoder testing platform as described in claim 1, characterized in that, The radial guide rail on the platform base is provided with a scale to determine the position of the reading head adjustment device on the radial guide rail.

6. The grating encoder detection platform as described in claim 1, characterized in that, The platform base has multiple radial guide rails of equal or non-equal width evenly distributed.

7. The grating encoder testing platform as described in claim 4, characterized in that, The system includes multiple reading head adjustment devices, each of which includes: a support plate bracket, a reading head pressure plate, and at least two support plates. The support plate bracket is vertically mounted on the platform base via radial guide rails, and the support plates are installed in layers on the support plate bracket to ensure alignment between the reading head and the grating. The reading head pressure plate is mounted on the support plate to fix the reading head.

8. The grating encoder testing platform as described in claim 7, characterized in that, The support plate is provided with a scale to determine the relative position of the reading head and the grating on the grating holder.

9. The grating encoder detection platform as described in claim 4, characterized in that, The type and size of the gratings on different layers of the grating base can be the same or different.

10. The grating encoder detection platform as described in claim 7, characterized in that, The support plate bracket and the support plate are provided with openings for observing the indicator lights of the reading head.

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