A test fixture for a flipper

Abstract

The application discloses a test tool for a turnover part, the turnover part has a fixed part and a turnover part connected with the fixed part and capable of turning relative to the fixed part, the test tool comprises a fixing part and a distance measuring sensor, the fixing part is capable of fixing the fixed part, the distance measuring sensor is located on the side of the turnover center line of the turnover part fixed by the fixing part, the distance measuring sensor is capable of measuring the distance between itself and the turnover part when the turnover part turns in an angle range, so that the angular velocity of the turnover part at the current position can be converted according to the current distance measured by the distance measuring sensor and the turnover time of the turnover part, and then the turnover stability and the turnover consistency of the product can be evaluated according to the converted angular velocity, and the test tool has the advantages of high evaluation efficiency, high evaluation accuracy, low evaluation cost, small overall data quantity and no resource occupation.

Description

Technical Field

[0001] This application relates to the field of flip-over testing technology, and in particular to a testing fixture for flip-over components. Background Technology

[0002] More and more products are equipped with flipping functionality. During the development of these products, the flipping speed usually needs to be tested to evaluate flipping stability (the greater the difference in speed between two flips, the worse the flipping stability) and flipping consistency between different prototypes (the greater the difference in flipping speed between two prototypes, the worse the flipping consistency).

[0003] In existing technologies, high-speed cameras are used to continuously capture the flipping process of the product under test. The real-time flipping angle is then determined visually or using a visual recognition system from multiple photographs to assess the product's flipping stability and consistency. This method yields data that is not intuitive, resulting in low evaluation efficiency and generally poor accuracy, and is also costly.

[0004] Therefore, how to reduce the evaluation cost of flipping stability and flipping consistency, and improve the evaluation efficiency and accuracy, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a test fixture for a flipping component. The flipping component has a fixing part and a flipping part connected to the fixing part and capable of flipping relative to the fixing part. The test fixture includes a fixing part and a distance sensor. The fixing part can fix the fixing part. The distance sensor is located around the flipping center line of the flipping component fixed by the fixing part. The distance sensor can measure the distance between itself and the flipping part when flipping within an angular range.

[0006] In one embodiment of the testing fixture, the number of distance measuring sensors is 1 or N, where N≥2. When N distance measuring sensors are set, the flipping stroke of the flipping part has N consecutive angle ranges from the start point to the end point of the stroke. Each distance measuring sensor is responsible for measuring the distance between itself and the flipping part when it flips within one of the angle ranges.

[0007] One embodiment of the testing fixture includes a support having a sidewall portion located around the center line of the flipping, and the ranging sensor is mounted on the sidewall portion.

[0008] In one embodiment of the testing fixture, the support has four sidewall portions arranged in a square, and the fastener is located within a square frame formed by the four sidewall portions.

[0009] One embodiment of the testing fixture includes a pad supported below the fixing member. The pad is located within a square frame formed by the four side wall portions, and a cavity is formed between the pad and the side wall portion of the support.

[0010] In one embodiment of the testing fixture, the first and third sidewalls of the four sidewalls are located on opposite sides of the fixing part, the second sidewall is connected between the same end of the first and third sidewalls, and the fourth sidewall is connected between the other ends of the first and third sidewalls. A first ranging sensor is provided on the first sidewall, a second ranging sensor is provided on the second sidewall, a third and a fifth ranging sensor are provided on the third sidewall, and a fourth ranging sensor is provided on the fourth sidewall. Alternatively, the second and fourth ranging sensors are both provided on the second sidewall or both are provided on the fourth sidewall.

[0011] One embodiment of the testing fixture includes an adjustable device, through which a ranging sensor is mounted on the side wall. The adjustable device enables the ranging sensor to move in directions perpendicular to and parallel to the flip center line.

[0012] In one embodiment of the testing fixture, the adjustable device includes a first movable part, a first guide rail fixed to the first movable part, and a second movable part that moves along the first guide rail. The side wall is provided with an elongated hole, the first movable part is inserted into the elongated hole and can move along the elongated hole, and the elongated hole and the first guide rail extend in a direction perpendicular to the rotation center axis and in a direction parallel to the rotation center axis, respectively.

[0013] One embodiment of the testing fixture uses a TOF sensor.

[0014] One embodiment of the testing fixture includes a host computer, the ranging sensor is communicatively connected to the host computer, and the host computer is configured to calculate the angular velocity of the rotating part based on the distance measured by the ranging sensor and the rotation time of the rotating part, and to plot the angular velocity curve in a two-dimensional coordinate system of angular velocity-rotation time.

[0015] The flipping component testing fixture provided in this application can calculate the angular velocity of the flipping part at its current position based on the current distance measured by the distance sensor and the flipping time of the flipping part (i.e., the time it takes for the flipping part 012 to flip from the starting point of its stroke to the current position). The calculated angular velocity can then be used to evaluate the flipping stability and consistency of the product. Compared to the traditional high-speed camera continuous shooting method for testing the flipping angle to evaluate the flipping stability and consistency of the product, this method no longer relies on the naked eye or visual recognition system, improving evaluation efficiency and accuracy, reducing evaluation costs by more than 95%, and also reducing the overall data volume and resource consumption. Attached Figure Description

[0016] Figure 1 This is a perspective view of one embodiment of the test fixture for the flipping component provided in this application. Figure 1 The dashed line in the middle indicates that the adjustable device and the distance sensor are omitted.

[0017] Figure 2 for Figure 1 Enlarged view of the installation location of a single ranging sensor;

[0018] Figure 3 for Figure 1 A magnified view of the installation location of a single ranging sensor from another perspective;

[0019] Figure 4 for Figure 1 The diagram shows the testing process of the test fixture.

[0020] The annotations in the attached figures are explained as follows:

[0021] 01 Flipping part, 011 Fixing part, 012 Flipping part;

[0022] 100 Fixture, 101 First clamp, 102 Second clamp;

[0023] 200 Distance sensor, 201 First distance sensor, 202 Second distance sensor, 203 Third distance sensor, 204 Fourth distance sensor, 205 Fifth distance sensor;

[0024] 300 Support, 301 Sidewall, 3011 First Sidewall, 3012 Second Sidewall, 3013 Third Sidewall, 3014 Fourth Sidewall, A Long Hole;

[0025] 400 Adjustable device, 401 First moving part, 4011 First roller, 4012 First limiting part, 4013 Second limiting part, 402 First guide rail, 403 Second moving part, 4031 Loading part, 4032 Second roller;

[0026] 500 spacer block, B cavity. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this application, the technical solution of this application will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the flipping component 01 has a fixing part 011 and a flipping part 012. The flipping part 012 is connected to the fixing part 011 and can be flipped relative to the fixing part 011. The type of the flipping component 01 is not limited. For example, it can be a learning machine, in which the main unit of the learning machine is the fixing part 011 and the flipping camera of the learning machine is the flipping part 012. It can also be a dual-screen translator, in which one of the two screens is the fixing part 011 and the other is the flipping part 012. Of course, it can also be other types of products with flipping functions.

[0029] like Figure 1 As shown, the test fixture for the flipping component (hereinafter referred to as the test fixture) includes a fixing member 100 and a distance sensor 200. The fixing member 100 can fix the fixing part 011 of the flipping component 01. When the fixing part 011 of the flipping component 01 is fixed to the fixing member 100, the distance sensor 200 is located around the flipping center line of the flipping component 01. The distance sensor 200 can measure the distance between itself and the flipping part 012 of the flipping component 01 when they flip within an angular range.

[0030] Specifically, the number of distance sensors 200 should be set to ensure that there is a corresponding distance sensor 200 to measure the distance between itself and the distance sensor 200 throughout the entire rotation stroke of the flipping unit 012. If the rotation stroke of the flipping unit 012 is small, only one distance sensor 200 needs to be set. If the rotation stroke of the flipping unit 012 is large, the rotation stroke of the flipping unit 012 from the start point to the end point of the rotation stroke can be divided into N consecutive angular ranges, and N (N≥2) distance sensors 200 can be set. Each distance sensor 200 is responsible for measuring the distance between itself and the flipping unit 012 when it rotates within one of the angular ranges. For example, in the illustrated embodiment, the flipping stroke of the flipping part 012 is 360°. The flipping stroke of the flipping part 012 has five consecutive angular ranges from the start point to the end point of the stroke, namely angular range A1, angular range A2, angular range A3, angular range A4, and angular range A5. Five distance measuring sensors 200 are provided, wherein the first distance measuring sensor 201 is responsible for measuring the distance between itself and the flipping part 012 when flipping within the angular range A1, the second distance measuring sensor 202 is responsible for measuring the distance between itself and the flipping part 012 when flipping within the angular range A2, the third distance measuring sensor 203 is responsible for measuring the distance between itself and the flipping part 012 when flipping within the angular range A3, the fourth distance measuring sensor 204 is responsible for measuring the distance between itself and the flipping part 012 when flipping within the angular range A4, and the fifth distance measuring sensor 205 is responsible for measuring the distance between itself and the flipping part 012 when flipping within the angular range A5.

[0031] The aforementioned flipping component testing fixture can calculate the angular velocity of the flipping part 012 at its current position based on the current distance measured by the distance sensor 200 and the flipping time of the flipping part 012 (i.e., the time it takes for the flipping part 012 to flip from the starting point of its stroke to the current position). The calculated angular velocity can then be used to evaluate the product's flipping stability and consistency. Compared to the traditional high-speed camera continuous shooting method for testing flipping angles to evaluate product flipping stability and consistency, this method no longer relies on the naked eye or visual recognition system, improving evaluation efficiency and accuracy, reducing evaluation costs by over 95%, and requiring less overall data and fewer resources.

[0032] for example, Figure 4In this diagram, taking a point on the rotation center line of the rotating part 012 as the origin, the coordinates of the first ranging sensor 201, the second ranging sensor 202, the third ranging sensor 203, the fourth ranging sensor 204, and the fifth ranging sensor 205 are (-L / 2, -d / 2), (-d / 2, L / 2), (L / 2, d / 2), (d / 2, -L / 2), and (L / 2, -d / 2), respectively. The time it takes for the rotating part 012 to rotate from the starting point of its rotation stroke to its current position is denoted by t. In this embodiment, the position where the rotating part 012 coincides with the fixed part 011 is the starting point of the rotation stroke of the rotating part 012. The angular velocity of the rotating part 012 rotating to its current position is denoted by ω. The distance between the first ranging sensor 201 and itself, rotating within the angle range A1, is denoted by f1. The distance between the second ranging sensor 202 and itself, rotating within the angle range A2, is denoted by f2. The distance between the third ranging sensor 203 and the rotating part 012 that rotates within the A3 angle range, measured by itself, is denoted by f3. The distance between the fourth ranging sensor 204 and the rotating part 012 that rotates within the A4 angle range, measured by itself, is denoted by f4. The distance between the fifth ranging sensor 205 and the rotating part 012 that rotates within the A5 angle range, measured by itself, is denoted by f5. The following relationships exist between f1, f2, f3, f4, f5 and ω and t:

[0033] f1 = L / 2 - d / 2 * tanωt;

[0034] f2=L / 2-d / 2*√3+d*sin(90-ωt) / sin(60+ωt);

[0035] f3=L / 2-d / 2*√3+d*sin(90-ωt) / sin(60+ωt);

[0036] f4=L / 2-d / 2*√3+d*sin(90-ωt) / sin(60+ωt);

[0037] f5 = L / 2 - d / 2 * tanωt;

[0038] Based on these relationships, the angular velocity of the flipping part 012 when it flips to different positions can be calculated.

[0039] Each rotation of the flipping unit 012 constitutes one rotation stroke. During testing, many rotations are typically required, such as 50,000. It's not necessary to measure the distance every time; instead, measure the distance after several rotations and compare the differences in angular velocities calculated from each measurement. If the differences are small, the rotation stability is good; otherwise, it's poor. More specifically, the calculated angular velocities can be plotted on a two-dimensional coordinate system with the rotation time and angular velocity of the flipping unit 012 as the axes to obtain an angular velocity curve. If the overlap of the angular velocity curves obtained from multiple distance measurements is high, the rotation stability is good; otherwise, it's poor. When measuring the rotation consistency of different parts, the above process needs to be repeated for multiple prototypes. Then, the angular velocity curves of multiple prototypes are compared. If the overlap of the angular velocity curves of multiple prototypes is high, the rotation consistency is good; otherwise, it's poor.

[0040] Specifically, the testing fixture may include a host computer (not shown in the figure), and the ranging sensor 200 is communicatively connected to the host computer, enabling the distance measured by the ranging sensor 200 to be transmitted to the host computer. The host computer is configured to calculate the angular velocity of the rotating part 012 based on the distance measured by the ranging sensor 200 and the rotating time of the rotating part 012, and to plot the angular velocity curve in a two-dimensional coordinate system of angular velocity and rotating time.

[0041] Specifically, such as Figure 1 As shown, the test fixture may include a support 300, which has a side wall portion 301 located around the rotation center line of the flipping component 01. The distance sensor 200 is mounted on the side wall portion 301. With the support of the support 300, the distance sensor 200 is in a stable position, eliminating the need for handheld operation and making it easier to ensure the accuracy of the test results.

[0042] In the figure, the support 300 has four side wall portions 301, which are arranged in a square shape, specifically a square or a rectangle. The fixing member 100 is located within the square frame formed by the four side wall portions 301. In this way, when multiple distance sensors 200 are provided, the multiple distance sensors 200 can be distributed and installed on different side wall portions 301 and can be located on different sides of the flipping member 01 fixed on the fixing member 100, so that the distance of the flipping member 01 can be measured at the flipping part 012 flipped to different angles.

[0043] In the figure, of the four sidewall portions 301, the first sidewall portion 3011 and the third sidewall portion 3013 are located on opposite sides of the fixing portion 011 of the flipping member 01. The flipping portion 012 can be flipped from the side of the fixing portion 011 facing the first sidewall portion 3011 to the side of the fixing portion 011 facing the third sidewall portion 3013. The second sidewall portion 3012 is connected between the same end of the first sidewall portion 3011 and the third sidewall portion 3013, and the third sidewall portion 3013 is connected between the other end of the second sidewall portion 3012 and the fourth sidewall portion 3014. The first sidewall portion 3011 is equipped with a first ranging sensor 201, the second sidewall portion 3012 is equipped with a second ranging sensor 202, the third sidewall portion 3013 is equipped with a third ranging sensor 203 and a fifth ranging sensor 205, and the fourth sidewall portion 3014 is equipped with a fourth ranging sensor 204. The detection light or detection wave of the first ranging sensor 201 is blocked by the fixing part 011, making it unable to detect the flipped part 012 within the A5 angle range. Therefore, a fifth ranging sensor 205 is needed to detect the distance of the flipped part 012 within the A5 angle range. Alternatively, the second ranging sensor 202 and the fourth ranging sensor 204 can both be disposed on the second side wall part 3012 or both on the fourth side wall part 3014.

[0044] Specifically, such as Figure 2 and Figure 3 As shown, the test fixture may include an adjustable device 400. The distance sensor 200 is mounted on the side wall portion 301 via the adjustable device 400. The adjustable device 400 allows the distance sensor 200 to move along directions perpendicular to and parallel to the flipping center line of the flipping portion 012. In this way, when testing flipping parts 01 of different sizes, the position of the distance sensor 200 can be adaptively adjusted, improving the applicability of the test fixture.

[0045] In the figure, the adjustable device 400 includes a first moving part 401, a first guide rail 402 fixed to the first moving part 401, and a second moving part 403 that moves along the first guide rail 402. An elongated hole A is provided on the side wall 301. The first moving part 401 passes through the elongated hole A and can move along the elongated hole A. The elongated hole A extends in a direction perpendicular to the rotation center line of the rotating part 012, and the first guide rail 402 extends in a direction parallel to the rotation center line of the rotating part 012. Alternatively, the elongated hole A may extend in a direction parallel to the rotation center line of the rotating part 012, and the first guide rail 402 may extend in a direction perpendicular to the rotation center line of the rotating part 012.

[0046] In the figure, the first moving part 401 includes a first roller 4011, a first limiting part 4012, and a second limiting part 4013. The first roller 4011 is located in the elongated hole A, so that the first moving part 401 is in a rolling friction state when it moves along the elongated hole A, which has low friction, is easy to adjust, and is not easily worn. The first limiting part 4012 is located on the outside of the side wall part 301 and can abut against the outer surface of the side wall part 301. The second limiting part 4013 is located on the inside of the side wall part 301 and can abut against the inner surface of the side wall part 301. The first limiting part 4012 and the second limiting part 4013 can prevent the first roller 4011 from disengaging from the elongated hole A.

[0047] In the figure, the second moving part 403 includes a carrier part 4031 and a second roller 4032. The carrier part 4031 can be a plate-shaped structure. The ranging sensor 200 is mounted on the carrier part 4031. The second roller 4032 rolls with the first guide rail 402, so that the second moving part 403 is in a rolling friction state when it moves along the first guide rail 402. The friction is small, it is easy to adjust and not easy to wear.

[0048] Specifically, such as Figure 1 As shown, the fixing member 100 may include clamps capable of holding the fixing part 011 of the flipping member 01 on both sides. A first clamp 101 and a second clamp 102 are provided in the figure, arranged alternately. This fixing structure allows for easy installation of the flipping member 01 before testing and easy removal of the flipping member 01 after testing. Of course, the structure of the fixing member 100 is not limited to this; it can be used as long as it can secure the fixing part 011 of the flipping member 01 and ensure that the flipping member 01 can be removed. For example, it could also be a threaded fastening structure.

[0049] Specifically, such as Figure 1 As shown, the test fixture may include a pad 500 disposed below the fixing member 100. The pad 500 is located within a square frame formed by the side wall portions 301 of the support 300. The pad 500 ensures that the flipping member 01, fixed by the fixing member 100, is at a height approximately flush with the distance sensor 200, facilitating distance measurement by the distance sensor 200. A cavity B is formed between the pad 500 and the side wall portion 301 of the support 300. In the figure, the pad has an L-shaped structure, with the horizontal and vertical portions of the L-shaped structure respectively attached to two adjacent side wall portions 301 of the support 300, forming a cavity B between them and the other two side wall portions 301 of the support 300. During the flipping process, the flipping member 012 passes over the cavity B, which reduces or avoids frictional resistance from the pad 500 to the flipping member 012.

[0050] The type of ranging sensor 200 is not limited; for example, it can be an ultrasonic ranging sensor, an infrared ranging sensor, a laser ranging sensor, a radar ranging sensor, etc. A TOF (Time of Flight) sensor is preferred. TOF sensors are a sensing technology widely used in ranging and 3D imaging. They measure distance by measuring the time required for light, sound waves, or other types of signals to travel from transmission to reception. TOF sensors offer advantages such as high accuracy, fast response, and adaptability to various environments.

[0051] The above examples illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A test fixture for a flipping component, the flipping component (01) having a fixing part (011) and a flipping part (012) connected to the fixing part (011) and capable of flipping relative to the fixing part (011), characterized in that, The test fixture includes a fixing component (100) and a distance sensor (200). The fixing component (100) can fix the fixing part (011). The distance sensor (200) is located around the rotation center line of the rotating part (01) fixed by the fixing component (100). The distance sensor (200) can measure the distance between itself and the rotating part (012) when they rotate within an angle range.

2. The test fixture according to claim 1, characterized in that, The number of the ranging sensors (200) is 1 or N, where N≥2. When N ranging sensors (200) are set, the flipping stroke of the flipping part (012) has N consecutive angle ranges from the start point to the end point of the stroke. Each ranging sensor (200) is responsible for measuring the distance between itself and the flipping part (012) when flipping within one of the angle ranges.

3. The test fixture for the flipping component according to claim 1, characterized in that, The test fixture includes a support (300) having a side wall portion (301) located around the center line of the flip, and the distance sensor (200) is mounted on the side wall portion (301).

4. The test fixture for the flipped part according to claim 3, characterized in that, The support (300) has four sidewall portions (301) arranged in a square, and the fastener (100) is located within a square frame formed by the four sidewall portions (301).

5. The test fixture for the flipping component according to claim 4, characterized in that, The test fixture includes a pad (500) which is supported under the fixing member (100). The pad (500) is located inside the square frame and a cavity (B) is formed between the pad (500) and the side wall portion (301).

6. The test fixture for the flipped part according to claim 4, characterized in that, Of the four sidewall portions (301), the first sidewall portion (3011) and the third sidewall portion (3013) are located on opposite sides of the fixing portion (011), the second sidewall portion (3012) is connected between the first sidewall portion (3011) and the third sidewall portion (3013) at the same end, and the fourth sidewall portion (3014) is connected between the first sidewall portion (3011) and the third sidewall portion (3013) at the other end. A first ranging sensor (2) is provided on the first sidewall portion (3011). 01), a second distance sensor (202) is provided on the second side wall (3012), a third distance sensor (203) and a fifth distance sensor (205) are provided on the third side wall (3013), and a fourth distance sensor (204) is provided on the fourth side wall (3014). Alternatively, the second distance sensor (202) and the fourth distance sensor (204) are both provided on the second side wall (3012) or both are provided on the fourth side wall (3014).

7. The test fixture for the flipping component according to claim 3, characterized in that, The test fixture includes an adjustable device (400), and the distance sensor (200) is mounted on the side wall (301) via the adjustable device (400). The adjustable device (400) enables the distance sensor (200) to move in directions perpendicular to and parallel to the flip center line.

8. The test fixture for the flipping part according to claim 7, characterized in that, The adjustable device (400) includes a first moving part (401), a first guide rail (402) fixed to the first moving part (401), and a second moving part (403) that moves along the first guide rail (402). The side wall part (301) is provided with an elongated hole (A). The first moving part (401) is inserted into the elongated hole (A) and can move along the elongated hole (A). The elongated hole (A) and the first guide rail (402) extend in a direction perpendicular to the flip center line and in a direction parallel to the flip center line, respectively.

9. The test fixture for the flipping component according to any one of claims 1-8, characterized in that, The sensor used is a TOF sensor.

10. The test fixture for the flipping component according to any one of claims 1-8, characterized in that, The test fixture includes a host computer, and the ranging sensor (200) is communicatively connected to the host computer. The host computer is configured to be able to calculate the angular velocity of the rotating part (012) based on the distance measured by the ranging sensor (200) and the rotation time of the rotating part (012), and to draw the angular velocity curve in a two-dimensional coordinate system of angular velocity-rotation time.

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