A measuring jig

Abstract

The utility model discloses a kind of measuring jigs, it is related to size measurement technical field, including mounting plate, several clamping mechanisms, several light sources and several support blocks, support block is fixed on mounting plate, support block is used to support measured sample, clamping mechanism is located on mounting plate, clamping mechanism is used to be measured sample is pressed tightly fixed on each support block, light source is used to be fixed below measured sample, light source is used to emit light from below to above;The utility model discloses measuring jig can be convenient to realize the backlight image measurement of measured sample.

Description

Technical Field

[0001] This utility model relates to the field of dimensional measurement technology, and in particular to a measuring fixture. Background Technology

[0002] Image measurement is a highly effective measurement method. For minute structures such as holes, slots, or edges in mechanical products, image measurement offers high speed and accuracy (through optical magnification). It is an indispensable and cost-effective method, especially for high-speed measurement of batch products on production lines. However, image measurement is often affected by factors such as material and color, leading to decreased stability. Using backlit image measurement can largely solve these stability issues.

[0003] Backlight image measurement is a high-precision non-contact measurement technology based on the combination of backlight illumination and digital image processing. By projecting parallel light from the back of the object being measured, it highlights the contour edges and suppresses surface texture interference. It is suitable for transparent / semi-transparent objects and high-precision contour dimension detection.

[0004] In a laboratory environment, conventional image measuring instruments are equipped with a backlight (the stage is usually made of transparent material, and the backlight is installed below the stage), making it easy to switch between front and backlighting to obtain reliable measurement results. However, products on automated production lines typically require clamping and fixing using measuring fixtures, and loading and unloading are also accomplished by robots or similar automated mechanisms. These measuring fixtures are often complex in structure (a complex structure can easily obstruct the backlight from illuminating the measured feature) or opaque, making the aforementioned backlit image measurement difficult. Utility Model Content

[0005] The purpose of this invention is to provide a measuring fixture to solve the problems existing in the prior art, and to facilitate the measurement of the backlight image of the sample being measured.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a measuring fixture, including a mounting plate, several clamping mechanisms, several light sources, and several support blocks. The support blocks are fixedly mounted on the mounting plate and are used to support the sample to be measured. The clamping mechanisms are mounted on the mounting plate and are used to press and fix the sample to be measured onto each of the support blocks. The light sources are fixedly placed below the sample to be measured and are used to emit light from bottom to top.

[0008] Preferably, the light source is fixedly mounted on the mounting plate.

[0009] Preferably, the light source is fixedly mounted on the side of the support block.

[0010] Preferably, it also includes an auxiliary block, the bottom end of which is fixedly mounted on the mounting plate, and the light source is fixedly mounted on the top end of the auxiliary block.

[0011] Preferably, the light source includes an LED emitter and a diffuser housing, the diffuser housing being fixedly mounted on the LED emitter, both the diffuser housing and the LED emitter being positioned below the sample being tested, and the LED emitter emitting light from bottom to top.

[0012] Preferably, the soft-light shell is a frosted, light-transmitting shell.

[0013] Preferably, the device further includes a cable, a controller, and a computer. One end of the cable is electrically connected to the light source, and the other end of the cable is electrically connected to the controller. The controller is communicatively connected to the computer. The computer can control the operation of the controller, and the controller can control the light source to be powered on or off.

[0014] Preferably, it also includes a photoelectric sensor switch, which is capable of detecting the installation position of the sample under test, and the photoelectric sensor switch is communicatively connected to the computer.

[0015] Preferably, the number of light sources is equal to the number of product features on the test sample, the light sources correspond one-to-one with the product features on the test sample, and the light sources are positioned below the product features on the test sample.

[0016] Preferably, the clamping mechanism includes a cylinder and a pressing block. The cylinder body is fixedly mounted on the mounting plate, and the pressing block is fixedly connected to the piston rod of the cylinder. The piston rod of the cylinder moves downward to press the pressing block onto the sample to be tested.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The measuring fixture provided by this utility model supports the sample to be measured by support blocks and clamps the sample to be measured on each support block by a clamping mechanism to ensure the stability of the sample to be measured during the measurement process. By setting a light source below the sample to be measured that requires backlight measurement, it is easy to realize the backlight image measurement of the sample to be measured, improve the reliability of image measurement, and solve the problem that the backlight source cannot be measured due to the product clamping during automated online measurement. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the measuring fixture provided by this utility model;

[0021] In the figure: 1-mounting plate, 2-clamping mechanism, 3-light source, 4-support block, 5-auxiliary block, 6-sample to be tested. Detailed Implementation

[0022] 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.

[0023] The purpose of this invention is to provide a measuring fixture to solve the problems existing in the prior art, and to facilitate the measurement of the backlight image of the sample being measured.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this utility model provides a measuring fixture, including a mounting plate 1, several clamping mechanisms 2, several light sources 3, and several support blocks 4. The support blocks 4 are fixedly mounted on the mounting plate 1 and are used to support the sample 6 to be measured. The clamping mechanisms 2 are mounted on the mounting plate 1 and are used to press and fix the sample 6 to be measured on each support block 4. The light sources 3 are fixedly placed below the sample 6 and are used to emit light from bottom to top.

[0026] The measuring fixture provided by this utility model supports the sample 6 to be measured by the support block 4, and the clamping mechanism 2 presses and fixes the sample 6 to be measured on each support block 4 to ensure the stability of the sample 6 during the measurement process. By setting the light source 3 below the sample 6 that needs to be backlit for measurement, it is easy to realize the backlit image measurement of the sample 6, improve the reliability of image measurement, and solve the problem that the backlit light source cannot be blocked due to product clamping during automated online measurement, thus preventing the backlit image measurement.

[0027] It should be noted that the height and position distribution of the support blocks 4 can be determined in conjunction with the actual mounting conditions of the sample 6 being tested, and the position distribution of the clamping mechanism 2 can be determined in conjunction with the actual mounting conditions of the sample 6 being tested. As a preferred embodiment of this invention, the sample 6 being tested has reference holes, positioning holes, or other functional holes (the holes on the sample 6 being tested are holes that are inherent to the sample 6 being tested according to manufacturing or assembly requirements, and are not holes specifically designed to fit the measuring fixture provided by this utility model). Mounting positioning pins are provided on the mounting plate 1 so that when the sample 6 being tested is placed on each support block 4, the mounting positioning pins extend into the holes on the sample 6 being tested that do not require backlight image measurement, so as to facilitate the positioning and measurement of the sample 6 being tested.

[0028] As a preferred embodiment of this invention, the light source 3 is fixedly mounted on the mounting plate 1. Specifically, the light source 3 can be arranged on the mounting plate 1 according to the actual measurement requirements.

[0029] As a preferred embodiment of this invention, the light source 3 is fixedly mounted on the side of the support block 4. Specifically, the light source 3 can be arranged on the side of the support block 4 according to the actual measurement requirements.

[0030] As a preferred embodiment of this invention, the measuring fixture provided by this utility model also includes an auxiliary block 5. The bottom end of the auxiliary block 5 is fixedly mounted on the mounting plate 1, and the light source 3 is fixedly mounted on the top end of the auxiliary block 5, so as to reduce the distance between the light source 3 and the sample 6 to be measured, and to facilitate the flexible arrangement of the light source 3.

[0031] Furthermore, the light source 3 includes an LED emitter and a diffuser housing. The diffuser housing is fixedly mounted on the LED emitter. Both the diffuser housing and the LED emitter are used to be placed below the sample 6 under test. The LED emitter emits light from bottom to top, so that the light source 3 provides a soft backlight to the sample 6 under test.

[0032] As a preferred embodiment of this invention, the soft-light shell is a frosted, light-transmitting shell, which has a simple structure and is easy to manufacture and use.

[0033] Furthermore, the measuring fixture provided by this utility model also includes a cable, a controller, and a computer. One end of the cable is electrically connected to the light source 3, and the other end of the cable is electrically connected to the controller. The controller is communicatively connected to the computer. The computer can control the controller to work, and the controller can control the light source 3 to be powered on or off, making it convenient to control the light source 3 to be powered on or off. When the light source 3 needs to emit light, the computer controls the controller, and the controller controls the light source 3 to be powered on, which is convenient to use.

[0034] Furthermore, the measuring fixture provided by this utility model also includes a photoelectric sensor switch, which can detect the installation position of the sample 6 being measured. The photoelectric sensor switch is connected to a computer for communication, so as to detect whether the sample 6 being measured is properly installed.

[0035] Furthermore, the number of light sources 3 is equal to the number of the measured product features (the measured product features are the measured holes, grooves, or edges, etc.) on the sample 6. The light sources 3 correspond one-to-one with the measured product features on the sample 6. The light sources 3 are placed below the measured product features on the sample 6, which makes them more targeted and can improve the reliability of image measurement.

[0036] Furthermore, the clamping mechanism 2 includes a cylinder and a lower pressure block. The cylinder body is fixedly mounted on the mounting plate 1, and the lower pressure block is fixedly connected to the piston rod of the cylinder. The piston rod of the cylinder moves downward to press the lower pressure block onto the sample 6 to be tested, which facilitates manufacturing and use.

[0037] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A measuring fixture, characterized in that: The device includes a mounting plate, several clamping mechanisms, several light sources, and several support blocks. The support blocks are fixedly mounted on the mounting plate and are used to support the sample to be tested. The clamping mechanisms are mounted on the mounting plate and are used to press and fix the sample to be tested onto each of the support blocks. The light sources are fixedly placed below the sample to be tested and are used to emit light from bottom to top.

2. The measuring fixture according to claim 1, characterized in that: The light source is fixedly mounted on the mounting plate.

3. The measuring fixture according to claim 1, characterized in that: The light source is fixedly mounted on the side of the support block.

4. The measuring fixture according to claim 1, characterized in that: It also includes an auxiliary block, the bottom of which is fixedly mounted on the mounting plate, and the light source is fixedly mounted on the top of the auxiliary block.

5. The measuring fixture according to claim 1, characterized in that: The light source includes an LED emitter and a diffuser housing. The diffuser housing is fixedly mounted on the LED emitter. Both the diffuser housing and the LED emitter are placed below the sample being tested. The LED emitter emits light from bottom to top.

6. The measuring fixture according to claim 5, characterized in that: The soft-light shell is a frosted, light-transmitting shell.

7. The measuring fixture according to claim 1, characterized in that: It also includes cables, a controller, and a computer. One end of the cable is electrically connected to the light source, and the other end of the cable is electrically connected to the controller. The controller is communicatively connected to the computer. The computer can control the operation of the controller, and the controller can control the light source to be powered on or off.

8. The measuring fixture according to claim 7, characterized in that: It also includes a photoelectric sensor switch, which can detect the installation position of the sample under test, and the photoelectric sensor switch is communicatively connected to the computer.

9. The measuring fixture according to claim 1, characterized in that: The number of light sources is equal to the number of product features on the test sample, and the light sources correspond one-to-one with the product features on the test sample. The light sources are positioned below the product features on the test sample.

10. The measuring fixture according to claim 1, characterized in that: The clamping mechanism includes a cylinder and a pressing block. The cylinder body is fixedly mounted on the mounting plate, and the pressing block is fixedly connected to the piston rod of the cylinder. The piston rod of the cylinder moves downward to press the pressing block onto the sample to be tested.

Images