Quick-change optical measurement tooling

Abstract

The utility model relates to optical measurement technical field discloses a kind of quick-change optical measurement tool, including datum disc and measuring disc, datum disc is placed on optical measurement platform, and it is equipped with light-transmitting window in datum disc, the both sides of light-transmitting window are provided with several positioning pins adapted with the feature hole on product, the upper surface of datum disc four corners is provided with guide pillar, measuring disc is stacked in datum disc, and it is equipped with hollow cavity containing product in measuring disc, several support blocks are provided on the side wall of hollow cavity, and the lower surface of measuring disc is provided with the positioning hole adapted with guide pillar. The above-mentioned quick-change optical measurement tool designs the datum disc and measuring disc of split structure, when facing different model products, only need to replace corresponding specification datum disc or measuring disc, greatly reduce the difficulty of changing tool under the condition of ensuring positioning accuracy, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical measurement technology, and in particular to a quick-change optical measurement fixture. Background Technology

[0002] Optical measurement is a technology that combines photoelectric technology with mechanical measurement. It offers advantages such as non-contact operation, high precision, and high efficiency, covering a full range of inspection needs from macroscopic dimensions to microscopic defects. Currently, specialized fixtures are used to fix products during optical measurement. These fixtures typically have positioning parts corresponding to the product's features, allowing for rapid positioning of batches of products of the same model for subsequent optical measurement. Therefore, different product models require different fixtures with different positioning parts—one product per fixture. This results in high fixture costs, significant warehousing pressure, and cumbersome disassembly and positioning operations when switching between different fixtures, impacting measurement accuracy and efficiency. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a quick-change optical measuring fixture to improve the applicability to different models of products and ensure measurement accuracy and efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A quick-change optical measuring fixture includes a reference plate and a measuring plate. The reference plate is placed on an optical measuring platform and has a light-transmitting window. Several positioning pins that match the feature holes on the product are provided on both sides of the light-transmitting window. Guide posts are provided at the four corners of the upper surface of the reference plate. The measuring plate is stacked on the reference plate and has a hollow cavity for accommodating the product. Several support blocks are provided on the side wall of the hollow cavity to support the edge area of ​​the product, so that the positioning pins are inserted into the feature holes and the area of ​​the product to be tested is located directly above the light-transmitting window. Positioning holes that match the guide posts are provided on the lower surface of the measuring plate.

[0006] As an alternative, the reference plate has the same external dimensions as the measuring plate, and both the reference plate and the measuring plate have bevels at one corner. When the measuring plate and the reference plate are stacked accurately, the two bevels are aligned.

[0007] As an optional solution, the upper surface of the measuring plate is also provided with guide posts, and the lower surface of the reference plate is also provided with positioning holes, so that the measuring plate and the reference plate can be stacked neatly.

[0008] As an alternative, the side wall of the hollow cavity is provided with a notch, the support block is Z-shaped, the upper end of the support block is detachably embedded in the notch, and the lower end of the support block is suspended in the hollow cavity.

[0009] As an alternative, the lower end of the support block has raised dots on its upper surface that match the feature holes on the product.

[0010] As an optional solution, the reference plate has multiple holes for installing positioning pins.

[0011] As an alternative, the optical measurement platform is equipped with stops that limit at least two corners of the reference disk.

[0012] As an alternative, grooves are provided on the side surfaces of the reference plate and the measuring plate, respectively.

[0013] The beneficial effects of this utility model are:

[0014] This quick-change optical measurement fixture features a separate reference plate and measuring plate. When dealing with different product models, only the corresponding reference plate or measuring plate needs to be replaced. The reference plate and measuring plate are compatible, reducing the number of fixtures required for different product models and thus lowering the overall cost. Furthermore, the simple stacking of the reference plate and measuring plate greatly reduces the difficulty of changing fixtures while ensuring positioning accuracy, thereby improving inspection efficiency. Attached Figure Description

[0015] Figure 1 This is a top view of the quick-change optical measuring fixture provided in this embodiment of the utility model;

[0016] Figure 2 This is a side-view cross-sectional view of the quick-change optical measuring fixture provided in this embodiment of the present invention;

[0017] Figure 3 This is a frontal sectional view of the quick-change optical measuring fixture provided in this embodiment of the present invention.

[0018] In the attached image:

[0019] 1. Base plate; 2. Measuring plate; 3. Light-transmitting window; 4. Positioning pin; 5. Guide post; 6. Hollow cavity; 7. Support block; 8. Positioning hole; 9. Angled surface; 10. Notch; 11. Protrusion; 12. Hole position; 13. Stop block; 14. Groove; 15. Product; 16. Feature hole. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0024] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0025] Please see Figures 1 to 3 As shown, this embodiment provides a quick-change optical measurement fixture, including a reference plate 1 and a measuring plate 2. The reference plate 1 is placed on an optical measurement platform. A light-transmitting window 3 is provided on the reference plate 1. Several positioning pins 4 that are adapted to the feature holes 16 on the product 15 are provided on both sides of the light-transmitting window 3. Guide posts 5 are provided at the four corners of the upper surface of the reference plate 1. The measuring plate 2 is stacked on the reference plate 1. A hollow cavity 6 for accommodating the product 15 is provided on the measuring plate 2. Several support blocks 7 are provided on the side wall of the hollow cavity 6. The support blocks 7 are used to support the edge area of ​​the product 15, so that the positioning pins 4 are inserted into the feature holes 16, and the area to be tested of the product 15 is located directly above the light-transmitting window 3. The lower surface of the measuring plate 2 is provided with positioning holes 8 that are adapted to the guide posts 5.

[0026] Therefore, by using the separate reference plate 1 and measuring plate 2, when dealing with different models of products 15, only the corresponding specification of reference plate 1 or measuring plate 2 needs to be replaced. Moreover, reference plate 1 and measuring plate 2 themselves have a certain degree of compatibility, which reduces the number of tooling required for different models of products 15, thereby reducing the overall cost. In addition, the simple stacking combination of reference plate 1 and measuring plate 2 greatly reduces the difficulty of changing tooling while ensuring positioning accuracy, thus improving the detection efficiency.

[0027] Optionally, the outer dimensions of the reference plate 1 are the same as those of the measuring plate 2, and a slope 9 is provided at one corner of the reference plate 1 and one corner of the measuring plate 2. When the measuring plate 2 and the reference plate 1 are accurately stacked, the two slopes 9 are aligned.

[0028] Therefore, by standardizing the reference plate 1 and the measuring plate 2, the physical alignment of the two when stacked is more stable, which is especially suitable for high-precision measurement scenarios and improves the repeatability accuracy. The inclined surface 9 on the reference plate 1 and the measuring plate 2 serves as a placement reference and provides an intuitive orientation mark. The operator can quickly determine whether the stacking is correct by aligning with the inclined surface 9 without the need for tools. Moreover, the inclined surface 9 forcibly limits the only correct stacking direction, avoiding measurement deviations caused by incorrect orientation.

[0029] Furthermore, the upper surface of the measuring disk 2 is also provided with guide posts 5, and the lower surface of the reference disk 1 is also provided with positioning holes 8, so that the measuring disk 2 and the reference disk 1 can be stacked neatly.

[0030] Therefore, by using guide posts 5 and positioning holes 8, the horizontal freedom of reference disk 1 and measuring disk 2 is restricted, ensuring fast, accurate and stable stacking. The reference disk 1 and measuring disk 2 are equipped with guide posts 5 and positioning holes 8 of the same specifications, allowing the reference disk 1 and measuring disk 2 to be stacked on each other, meeting the positioning requirements of more products 15. In addition, when storing reference disks 1 and measuring disks 2 of other specifications, the cooperation between guide posts 5 and positioning holes 8 can prevent slippage or displacement during stacking, ensuring that multiple reference disks 1 and measuring disks 2 are stably and vertically stacked, improving the utilization rate of storage space.

[0031] Optionally, a notch 10 is provided on the side wall of the hollow cavity 6, the support block 7 is Z-shaped, the upper end of the support block 7 is detachably embedded in the notch 10, and the lower end of the support block 7 is suspended in the hollow cavity 6.

[0032] The Z-shaped support block 7 disperses stress through a bending design, increasing its bending strength by approximately 40% compared to a straight-arm structure, ensuring support strength. Its special shape also facilitates the insertion of the product 15 into the hollow cavity 6, preventing the product 15 from protruding from the measuring plate 2 or contacting the reference plate 1 below. Furthermore, the support block 7 can be installed, used, or removed as needed to accommodate more product 15 shapes, improving the applicability of the measuring plate 2. It also allows for easy and independent replacement of damaged or worn support blocks 7, reducing maintenance costs and time.

[0033] Furthermore, the lower upper surface of the support block 7 is provided with a protrusion 11 that matches the feature hole 16 on the product 15.

[0034] Therefore, by embedding the protrusion 11 into the feature hole 16, the support block 7 increases the limiting function of the product 15, further preventing the product 15 from shifting.

[0035] Optionally, the reference plate 1 has multiple holes 12 reserved for installing the positioning pins 4.

[0036] Therefore, multiple holes 12 support the layout of multiple locating pins 4 to adapt to the position of feature holes 16 on different models of products 15, improve the applicability of the reference plate 1, and facilitate the independent replacement of damaged or worn locating pins 4, reducing maintenance costs and time.

[0037] Optionally, the optical measurement platform is provided with stops 13 that limit at least two corners of the reference disk 1.

[0038] The position of the reference plate 1 on the optical measurement platform can be quickly determined by the stop 13, ensuring repeatability and shortening the calibration time. The stop 13 also has the function of resisting vibration interference, preventing the reference plate 1 from being displaced due to vibration during the measurement process, and ensuring long-term measurement stability.

[0039] Optionally, grooves 14 are provided on the side surface of the reference plate 1 and the side surface of the measuring plate 2, respectively.

[0040] Therefore, the groove 14 provides a gripping point for people and machines, making it easy to pick up the reference plate 1 and the measuring plate 2, and avoiding contact with other surfaces of the reference plate 1 and the measuring plate 2, which would affect the measurement accuracy.

[0041] In summary, this quick-change optical measurement fixture has the following advantages:

[0042] 1) Modular design: The split reference plate 1 and measuring plate 2 can be replaced independently to adapt to different product models 15, reducing the number of special tooling and lowering the overall cost;

[0043] 2) Rapid and accurate positioning: The standard-sized reference plate 1 and measuring plate 2 are forcibly aligned by the marking of the inclined surface 9. Combined with the guide post 5 and the positioning hole 8, the horizontal degree of freedom is restricted to ensure the accuracy of stacking repeatability.

[0044] 3) High compatibility and easy maintenance: Both the support block 7 and the positioning pin 4 can be used and replaced flexibly as needed, adapting to a variety of products 15 features, with low tooling and maintenance costs.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A quick-change optical measuring fixture, characterized in that, The device includes a reference plate (1) and a measuring plate (2). The reference plate (1) is placed on an optical measuring platform. A light-transmitting window (3) is provided on the reference plate (1). Several positioning pins (4) that are adapted to the feature holes (16) on the product (15) are provided on both sides of the light-transmitting window (3). Guide posts (5) are provided at the four corners of the upper surface of the reference plate (1). The measuring plate (2) is stacked on the reference plate (1). A hollow cavity (6) for accommodating the product (15) is provided on the measuring plate (2). Several support blocks (7) are provided on the side wall of the hollow cavity (6). The support blocks (7) are used to support the edge area of ​​the product (15) so that the positioning pins (4) are inserted into the feature holes (16) and the area to be tested of the product (15) is located directly above the light-transmitting window (3). The lower surface of the measuring plate (2) is provided with positioning holes (8) that are adapted to the guide posts (5).

2. The quick-change optical measuring fixture according to claim 1, characterized in that, The outer dimensions of the reference plate (1) are the same as those of the measuring plate (2), and one corner of the reference plate (1) and one corner of the measuring plate (2) are provided with a slope (9). When the measuring plate (2) and the reference plate (1) are accurately stacked, the two slopes (9) are aligned.

3. The quick-change optical measuring fixture according to claim 2, characterized in that, The upper surface of the measuring disk (2) is also provided with the guide post (5), and the lower surface of the reference disk (1) is also provided with the positioning hole (8), so that the measuring disk (2) and the reference disk (1) can be stacked neatly.

4. The quick-change optical measuring fixture according to claim 1, characterized in that, The hollow cavity (6) has a notch (10) on its side wall. The support block (7) is Z-shaped. The upper end of the support block (7) is detachably embedded in the notch (10), and the lower end of the support block (7) is suspended in the hollow cavity (6).

5. The quick-change optical measuring fixture according to claim 4, characterized in that, The lower end of the support block (7) is provided with a protrusion (11) that matches the feature hole (16) on the product (15).

6. The quick-change optical measuring fixture according to claim 1, characterized in that, The reference plate (1) has multiple holes (12) reserved for installing the positioning pin (4).

7. The quick-change optical measuring fixture according to claim 1, characterized in that, The optical measurement platform is provided with stops (13) that limit the reference disk (1) at least two corners.

8. The quick-change optical measuring fixture according to claim 1, characterized in that, The side surface of the reference plate (1) and the side surface of the measuring plate (2) are respectively provided with grooves (14).

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