Directional failure platform and testing apparatus with adjustable crush force

Abstract

The utility model relates to a directional failure platform and testing equipment of adjustable pressure crushing force, and the directional failure platform of adjustable pressure crushing force includes: base, guide mechanism, guide mechanism sets up in base, object table, object table sets up in guide mechanism to be guided along the direction of guiding of guide mechanism, adjusting mechanism, adjusting mechanism includes the elastic member and drive assembly with first end and second end, first end rotatably connected in object table, drive assembly is fixed in base, and can driveably connect in second end, in the debugging optical probe, drive assembly keeps in the self -locking state, and the optical probe collides with the object table after the accident, and the object table is affected by external force, can along the direction of guiding collapse, makes the inclination angle of the direction of guiding of guide mechanism and the compression direction of elastic member increase, and the collapse angle of elastic member and base reduces, to ensure the safety of optical probe, through drive assembly adjustment elastic member's second end's position, can adjust the size of pressure crushing force.

Description

Technical Field

[0001] This utility model relates to the field of optical component testing equipment technology, and in particular to an adjustable crushing force directional failure stage and testing equipment. Background Technology

[0002] With the development of optical imaging technology, consumer-grade VR devices are becoming increasingly popular. Robotic arms, due to their advantages of high precision, good repeatability, strong programmability, and the ability to move arbitrarily in three-dimensional space, are widely used in fields such as motion error calibration and spatial motion analysis for VR devices. Before leaving the factory, VR devices typically need to have their optical parameters such as brightness, chromaticity, and resolution tested from various angles, often using optical probes mounted on a robotic arm. During testing, the VR device is fixed to a worktable, and the robotic arm drives the optical probes to measure the VR device's optical parameters from different angles.

[0003] However, during the testing of the optical parameters of VR devices, the robotic arm needs to be manually adjusted to determine the different measurement positions of the optical probe in space. During this adjustment process, negligence by the personnel may cause the optical probe on the robotic arm to collide with the worktable. If the force exerted on the optical probe exceeds a certain value, it will damage its internal structure, leading to the optical probe's failure. Utility Model Content

[0004] Therefore, it is necessary to provide an adjustable crushing force directional failure stage and testing equipment to address the problem that the optical probe is easily damaged by collision with the worktable when adjusting the measurement position of the optical probe.

[0005] On the one hand, this application provides a directional failure stage with adjustable crushing force, comprising:

[0006] A base; a guide mechanism disposed on the base; a platform disposed on the guide mechanism for sliding along a guide direction guided by the guide mechanism; and an adjustment mechanism comprising an elastic element having a first end and a second end, and a drive assembly, wherein the compression direction of the elastic element is along the line connecting the first end and the second end, and the compression direction of the elastic element has an acute angle with the guide direction of the guide mechanism; the first end is rotatably connected to the platform, the drive assembly is fixed to the base and drivably connected to the second end, the drive assembly having a self-locking state and a driving state; when the drive assembly is in the self-locking state, the second end remains fixed; when the drive assembly is in the driving state, the drive assembly moves the second end to adjust the size of the tilt angle.

[0007] In one embodiment, the drive assembly includes a lead screw disposed on the base, a lead screw thrust seat threaded to the lead screw, and a drive motor drivably connected to the lead screw, wherein the second end of the elastic member is rotatably connected to the lead screw thrust seat.

[0008] In one embodiment, the projection of the elastic element along the upper line direction coincides with the transmission lead screw.

[0009] In one embodiment, the transmission screw has a first transmission part and a second transmission part, the thread direction of the first transmission part is opposite to the thread direction of the second transmission part, the drive assembly includes two screw thrust seats respectively threaded to the first transmission part and the second transmission part, and the adjustment mechanism includes two elastic elements, the second ends of the two elastic elements are rotatably connected to the two screw thrust seats respectively, and the collapsing angles of the two elastic elements and the base are opposite.

[0010] In one embodiment, the two elastic elements have the same collapsing angle as the base.

[0011] In one embodiment, the drive assembly further includes a speed reducer connected between the drive motor and the lead screw.

[0012] In one embodiment, the drive assembly further includes two limiting seats fixed to the base, the transmission screw is rotatably disposed on the two limiting seats, and the screw thrust seat is disposed between the two limiting seats.

[0013] In one embodiment, the elastic element is a nitrogen spring.

[0014] In one embodiment, the guiding mechanism includes a plurality of guide shaft supports fixed to the base, a plurality of guide shafts fixed to the guide shaft supports, and a plurality of linear bearings fixed to the platform. The platform has a plurality of guide holes that communicate with the bearing holes of the linear bearings, and the plurality of guide shafts are respectively inserted into the guide holes.

[0015] On the other hand, this application also provides a testing device, including:

[0016] An adjustable crushing force directional failure stage as described above;

[0017] The device includes a robotic arm mounted on the adjustable crushing force directional failure platform and an optical probe mounted on the robotic arm. In summary, the crushing force of the adjustable crushing force directional failure platform is the difference between the component of the elastic force of the elastic element in the guiding direction and the weight of the platform and the object placed on it. During optical probe adjustment, the drive assembly remains in a self-locking state. If the optical probe accidentally collides with the platform, the platform is subjected to external force and can collapse along the guiding direction, increasing the tilt angle between the guiding direction of the guiding mechanism and the compression direction of the elastic element, and decreasing the collapse angle between the elastic element and the base, thus ensuring the safety of the optical probe.

[0018] The directional failure stage with adjustable crushing force of this application can adjust the position of the second end of the elastic element through the drive component, so that the tilt angle between the guiding direction of the guide mechanism and the compression direction of the elastic element changes, and the angle between the elastic element and the base changes, thereby realizing the adjustment of the crushing force. Attached Figure Description

[0019] Figure 1 A three-dimensional schematic diagram of an adjustable crushing force directional failure stage provided for one embodiment of this application;

[0020] Figure 2 A plan view of a first example of a directional failure stage with adjustable crushing force according to the above embodiments of this application is shown;

[0021] Figure 3 A plan view of the collapse of the directional failure stage with adjustable crushing force according to the first example above in this application is shown.

[0022] Figure 4 A plan view of the collapsed directional failure stage with adjustable crushing force according to the first example of this application is shown.

[0023] Figure 5 A plan view of the crushing force adjustment of the directional failure stage with adjustable crushing force according to the first example of this application is shown.

[0024] Figure 6 A schematic diagram of the force decomposition during the collapse of a directional failure platform with adjustable crushing force according to the first example of this application is shown.

[0025] Figure 7 A plan view of a second example of a directional failure stage with adjustable crushing force according to the above embodiments of this application is shown;

[0026] Figure 8 A plan view of the collapse of the directional failure stage with adjustable crushing force according to the second example above in this application is shown.

[0027] Figure 9 A plan view of the collapsed directional failure stage of the second example above according to this application is shown.

[0028] Figure 10 A plan view of the crushing force adjustment of the directional failure stage with adjustable crushing force according to the second example above is shown;

[0029] Figure 11 A schematic diagram of the force decomposition during the collapse of a directional failure stage with adjustable crushing force according to the second example above in this application is shown.

[0030] Reference numerals: 10, base; 20, guide mechanism; 21, guide shaft support; 22, guide shaft; 23, linear bearing; 30, stage; 40, adjustment mechanism; 41, elastic element; 411, first end; 412, second end; 42, drive assembly; 421, transmission screw; 4211, first transmission part; 4212, second transmission part; 422, screw thrust seat; 423, drive motor; 424, reducer; 425, limit seat; 50, optical probe. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] On the one hand, this application provides a directional failure platform with adjustable crushing force, which can adjust the crushing force as needed. Once the force on the platform exceeds the set crushing force value, the platform will collapse downwards, thereby protecting the safety of the motion mechanism.

[0038] Specifically, please refer to Figure 1 and Figure 2The adjustable crushing force directional failure platform may include a base 10, a guide mechanism 20, a stage 30, and an adjustment mechanism 40. The guide mechanism 20 is disposed on the base 10, and the stage 30 is disposed on the guide mechanism 20, so as to be guided by the guide mechanism 20 to slide along the guide direction. The adjustment mechanism 40 may include an elastic element 41 and a drive assembly 42. The elastic element 41 has a first end 411 and a second end 412, and the compression direction of the elastic element 41 is in the direction of the line connecting the first end 411 and the second end 412. The compression direction of the elastic element 41 and the guide direction of the guide mechanism 20 have an inclination angle, which is an acute angle, that is, there is a collapse angle between the elastic element 41 and the base 10, and the collapse angle is an acute angle. The first end 411 of the elastic element 41 is rotatably connected to the stage 30. The drive assembly 42 is fixed to the base 10 and is drivably connected to the second end 412 of the elastic element 41. The drive assembly 42 has a self-locking state and a drive state. When the drive assembly 42 is in the self-locking state, the second end 412 remains fixed, and the tilt angle between the guiding direction of the guide mechanism 20 and the compression direction of the elastic member 41 remains unchanged, that is, the collapse angle between the elastic member 41 and the base 10 remains unchanged. When the drive assembly 42 is in the drive state, the drive assembly 42 drives the second end 412 to move, causing the elastic member 41 to rotate around the first end 411. The compression direction of the elastic member 41 changes, the tilt angle between the guiding direction of the guide mechanism 20 and the compression direction of the elastic member 41 changes, and the collapse angle between the elastic member 41 and the base 10 changes.

[0039] It is understood that the crushing force of the adjustable crushing force directional failure stage of this application is the difference between the component of the elastic force of the elastic element 41 in the guiding direction and the weight of the stage 30 and the object placed on the stage 30. When adjusting the optical probe 50, the drive assembly 42 remains in a self-locking state. After the optical probe 50 accidentally collides with the stage 30, the stage 30 is subjected to external force and can collapse along the guiding direction, increasing the tilt angle between the guiding direction of the guide mechanism 20 and the compression direction of the elastic element 41, and decreasing the collapse angle between the elastic element 41 and the base 10, thus ensuring the safety of the optical probe 50. The adjustable crushing force directional failure stage of this application can adjust the position of the second end 412 of the elastic element 41 through the drive assembly 42, changing the tilt angle between the guiding direction of the guide mechanism 20 and the compression direction of the elastic element 41, and changing the angle between the elastic element 41 and the base 10, thereby achieving adjustment of the crushing force.

[0040] For example, such as Figure 3 , Figure 4 and Figure 6 As shown, with the vertical direction as the guiding direction and the plane of the base 10 as the horizontal direction, when adjusting the measurement position of the optical probe 50, the drive assembly 42 can be kept in a self-locking state. At this time, the collapse angle between the elastic element 41 and the base 10 is... The elastic force of elastic element 41 is The weight of the stage 30 is The weight of the stage 30 and the object placed on the stage 30 is less than the vertical component of the elastic force of the elastic element 41, that is... The stage 30 remains stationary. When the robotic arm drives the optical probe 50 to collide with the stage 30, the resulting external force is applied to the stage 30. The sum of the external force and the weight of the object placed on the platform 30 is greater than the vertical component of the elastic force of the elastic element 41, that is... When the elastic element 41 is compressed, the stage 30 moves downward, creating a buffer that prevents damage to the internal structure of the optical probe 50. As the elastic element 41 is compressed and the stage 30 descends, the collapse angle between the elastic element 41 and the base 10 decreases, becoming... The vertical component of the elastic force generated by the elastic element 41 decreases, thus reducing the crushing force. When the vertical component of the elastic force generated by the elastic element 41 is less than the weight of the platform 30 and the object placed on it, that is... When the stage 30 collapses to its lowest point, the collapse angle between the elastic element 41 and the base 10 is the smallest. At this point, the external force generated by the collision between the optical probe 50 and the stage 30 exceeds the limit that the crushing force can withstand.

[0041] like Figure 5 As shown, if the crushing force needs to be adjusted, the drive assembly 42 can be switched to drive mode to move the second end 412 of the elastic element 41. Since the length of the elastic element 41 remains constant, the height of the stage 30 changes during the movement of the elastic element 41. Specifically, if the height of the stage 30 decreases, the collapse angle between the elastic element 41 and the base 10 decreases, and the component of the elastic force of the elastic element 41 in the guide direction decreases, thus reducing the crushing force. If the height of the stage 30 increases, the collapse angle between the elastic element 41 and the base 10 increases, and the component of the elastic force of the elastic element 41 in the guide direction increases, thus increasing the crushing force. Furthermore, to ensure that the stage 30 can collapse, the tilt angle between the guide direction of the guide mechanism 20 and the compression direction of the elastic element 41 must be kept at an acute angle, that is, the collapse angle between the elastic element 41 and the base 10 must be less than 90°.

[0042] Optionally, such as Figure 2 and Figure 7As shown, in some embodiments, the drive assembly 42 includes a transmission screw 421 disposed on the base 10, a screw thrust seat 422 threadedly connected to the transmission screw 421, and a drive motor 423 drivably connected to the transmission screw 421. The second end 412 of the elastic member 41 is rotatably connected to the screw thrust seat 422. The drive motor 423 has a self-locking capability, enabling switching between the self-locking state and the drive state of the drive assembly 42. When the drive motor 423 drives the transmission screw 421 to rotate, the screw thrust seat 422 slides along the transmission screw 421, thereby causing the second end 412 of the elastic member 41 to translate along the direction of the transmission screw 421. Based on the screw pitch, the conversion between the rotation angle of the drive motor 423 and the translation distance of the second end 412 of the elastic member 41 can be realized. Based on the translation distance of the second end 412 of the elastic member 41, the change in the collapse angle between the elastic member 41 and the base 10 can be calculated, and finally, the change in the magnitude of the crushing force can be calculated. In this way, by controlling the rotation angle of the drive motor 423, the magnitude of the crushing force can be precisely adjusted.

[0043] In addition, the drive assembly 42 can also drive the second end 412 of the elastic element 41 to translate by other means such as cylinder push or motor-driven worm gear transmission.

[0044] Preferably, in some embodiments, the projection of the elastic element 41 along the upper direction coincides with the transmission screw 421. In other words, the elastic element 41 and the transmission screw 421 are in the same vertical plane. Thus, the collapse angle between the elastic element 41 and the base 10 is the same as the collapse angle between the elastic element 41 and the transmission screw 421. The change in the collapse angle between the elastic element 41 and the transmission screw 421 can be directly derived from the change in the collapse angle between the elastic element 41 and the base 10, making it easier to determine the change in crushing force and simplifying the adjustment of the crushing force.

[0045] In particular, such as Figure 7As shown, in some embodiments, the transmission screw 421 has a first transmission part 4211 and a second transmission part 4212. The thread direction of the first transmission part 4211 is opposite to the thread direction of the second transmission part 4212. The drive assembly 42 includes two screw thrust seats 422 respectively threaded to the first transmission part 4211 and the second transmission part 4212. The adjustment mechanism 40 includes two elastic elements 41. The second ends 412 of the two elastic elements 41 are rotatably connected to the two screw thrust seats 422, and the collapsing angles of the two elastic elements 41 and the base 10 are opposite. In this way, by setting two elastic elements 41, on the one hand, the elastic force required by a single elastic element 41 is reduced, and the numerical directional component force originally provided by one elastic element 41 can be provided by two elastic elements 41 respectively; on the other hand, the horizontal component force of the elastic element 41 acts on two positions of the transmission screw 421, making the force on the transmission screw 421 more balanced. Furthermore, since the thread directions of the first transmission part 4211 and the second transmission part 4212 are opposite, and the sliding directions of the two lead screw thrust seats 422 are also opposite, when the drive motor 423 drives the transmission lead screw 421 to rotate, the two lead screw thrust seats 422 move closer to each other or further away from each other, so that the collapse angle of the two elastic elements 41 and the base 10 increases or decreases simultaneously, thereby realizing the single motor control adjustment of the collapse angle of the two elastic elements 41 and the base 10.

[0046] For example, such as Figure 8 , Figure 9 and Figure 11 As shown, when adjusting the measurement position of the optical probe 50, the collapsing angle between the elastic element 41 and the base 10 is... The elastic force of elastic element 41 is The collapse angle between the other elastic element 41 and the base 10 is... The elastic force of elastic element 41 is The weight of the stage 30 is The stage 30 remains stationary. The weight of the stage 30 and the object placed on it is less than the sum of the vertical components of the elastic forces of the two elastic elements 41. When the robotic arm drives the optical probe 50 to collide with the stage 30, the resulting external force is applied to the stage 30. The sum of the external force and the weight of the object placed on the platform 30 is greater than the sum of the vertical components of the elastic forces of the two elastic elements 41, that is... When the two elastic elements 41 are compressed, the stage 30 moves downward, and the collapse angle between the two elastic elements 41 and the base 10 decreases, becoming... and As the elastic force of the elastic element 41 decreases in the vertical direction, the crushing force also decreases. When the platform 30 collapses to its lowest point, the vertical component of the elastic force generated by the elastic element 41 is less than the weight of the platform 30 and the object placed on it. .

[0047] Similarly, as Figure 10 As shown, if it is necessary to adjust the magnitude of the crushing force, the drive assembly 42 can be switched to the drive state to move the second end 412 of the elastic element 41, so that the two ends of the elastic element 41 move away from or closer to each other. Since the length of the elastic element 41 remains unchanged, the height of the platform 30 changes during the movement of the elastic element 41, causing the crushing angle between the elastic element 41 and the base 10 to change, thereby changing the component force of the elastic element 41 in the guide direction, that is, changing the magnitude of the crushing force.

[0048] Preferably, in some embodiments, the two elastic elements 41 have the same collapsing angle as the base 10 and face opposite directions. This ensures that the force components of the two elastic elements 41 in the guiding direction are equal. When the transmission screw 421 is driven to rotate by the drive motor 423, the two screw thrust seats 422 slide the same distance, that is, the change in the magnitude of the collapse angle between the two elastic elements 41 and the base 10 is the same, so that when adjusting the crushing force, the two elastic elements 41 can be kept moving synchronously, thus making the process of adjusting the crushing force simpler.

[0049] Because the torque output of a motor is inversely proportional to its speed, a larger motor is needed to drive the lead screw 421 at low speeds. Therefore, as Figure 2 and Figure 7 As shown, in some embodiments, the drive assembly 42 may further include a reducer 424, which is connected between the drive motor 423 and the lead screw 421. Thus, by providing a reducer 424 between the drive motor 423 and the lead screw 421, the high-speed, low-torque output of the drive motor 423 can be converted to a low-speed, high-torque output, enabling the drive motor 423 to meet the requirements for low-speed operation.

[0050] In some embodiments, such as Figure 2 and Figure 7 As shown, the drive assembly 42 further includes two limiting seats 425 fixed to the base 10, a transmission screw 421 rotatably disposed on the two limiting seats 425, and a screw thrust seat 422 disposed between the two limiting seats 425. In this way, the stroke of the two screw thrust seats 422 is limited between the two limiting seats 425, preventing the drive motor 423 from over-adjusting and causing the screw thrust seat 422 to slip off the screw, thus avoiding a safety hazard.

[0051] Preferably, in some embodiments, the elastic element 41 is a nitrogen spring. A nitrogen spring is a novel elastic component that uses high-pressure nitrogen as its working medium. It has advantages such as small size, high elastic force, long stroke, stable operation, precision manufacturing, long service life, and a smooth elastic force curve. In particular, the nitrogen spring can maintain a constant elastic force within its working stroke. Therefore, utilizing the constant elastic force of the nitrogen spring, even if the elastic element 41 is compressed during the collapse of the stage 30, the elastic force remains constant, thus providing a stable crushing force and ensuring the safety of the optical probe 50.

[0052] like Figure 2 and Figure 7 As shown, in some embodiments, the guiding mechanism 20 includes multiple guide shaft supports 21 fixed to the base 10, multiple guide shafts 22 fixed to the guide shaft supports 21, and multiple linear bearings 23 fixed to the platform 30. The platform 30 has multiple guide holes that communicate with the bearing holes of the linear bearings 23, and the multiple guide shafts 22 are respectively inserted into the guide holes. In this way, by utilizing the cooperation of the linear bearings 23 and the guide shafts, the platform 30 can be guided to slide more smoothly in the vertical direction, so as to ensure that the platform 30 can collapse in a predetermined direction.

[0053] On the other hand, this application also provides a testing device for testing the optical parameters of a VR device. This device may include an adjustable crushing force directional failure stage, a robotic arm, and an optical probe 50 as described above. The robotic arm is mounted on the adjustable crushing force directional failure stage, and the optical probe 50 is mounted on the robotic arm. When testing the VR device, the VR device can be placed on the stage 30, and the robotic arm can be adjusted to determine multiple measurement positions of the optical probe 50. By utilizing the adjustable crushing force directional failure stage, this testing device can prevent damage to the internal structure of the optical probe 50 caused by external forces generated when the optical probe 50 collides with the stage 30 during robotic arm adjustment, ensuring the safety of the optical probe 50.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A directional failure stage with adjustable crushing force, characterized in that, include: Base; A guiding mechanism is disposed on the base; A stage, which is disposed on the guide mechanism and is guided by the guide mechanism to slide along the guide direction; as well as An adjustment mechanism includes an elastic element having a first end and a second end, and a driving assembly. The compression direction of the elastic element is along the line connecting the first end and the second end, and there is an acute angle between the compression direction of the elastic element and the guiding direction of the guiding mechanism. The first end is rotatably connected to the platform, and the driving assembly is fixed to the base and drivably connected to the second end. The driving assembly has a self-locking state and a driving state. When the driving assembly is in the self-locking state, the second end remains fixed. When the driving assembly is in the driving state, the driving assembly drives the second end to move to adjust the size of the tilt angle.

2. The directional failure platform with adjustable crushing force according to claim 1, characterized in that, The drive assembly includes a transmission screw disposed on the base, a screw thrust seat threaded to the transmission screw, and a drive motor drivably connected to the transmission screw. The second end of the elastic member is rotatably connected to the screw thrust seat.

3. The directional failure platform with adjustable crushing force according to claim 2, characterized in that, The projection of the elastic element along the upper line direction coincides with the transmission lead screw.

4. The directional failure platform with adjustable crushing force according to claim 3, characterized in that, The transmission screw has a first transmission part and a second transmission part, the thread direction of the first transmission part is opposite to the thread direction of the second transmission part, the drive assembly includes two screw thrust seats that are respectively threaded to the first transmission part and the second transmission part, and the adjustment mechanism includes two elastic elements, the second ends of the two elastic elements are respectively rotatably connected to the two screw thrust seats, and the collapsing angles of the two elastic elements and the base are opposite.

5. The directional failure platform with adjustable crushing force according to claim 4, characterized in that, The two elastic elements have the same collapsing angle as the base.

6. The directional failure stage with adjustable crushing force according to any one of claims 2 to 5, characterized in that, The drive assembly further includes a speed reducer connected between the drive motor and the lead screw.

7. The directional failure stage with adjustable crushing force according to any one of claims 2 to 5, characterized in that, The drive assembly further includes two limiting seats fixed to the base, the transmission screw is rotatably disposed on the two limiting seats, and the screw thrust seat is disposed between the two limiting seats.

8. The directional failure stage with adjustable crushing force according to any one of claims 1 to 5, characterized in that, The elastic element is a nitrogen spring.

9. The directional failure stage with adjustable crushing force according to any one of claims 1 to 5, characterized in that, The guiding mechanism includes multiple guide shaft supports fixed to the base, multiple guide shafts fixed to the guide shaft supports, and multiple linear bearings fixed to the platform. The platform has multiple guide holes that communicate with the bearing holes of the linear bearings, and the multiple guide shafts are respectively inserted into the guide holes.

10. A testing device, characterized in that, include: An adjustable crushing force directional failure stage as described in any one of claims 1 to 9; A robotic arm, which is mounted on the directional failure platform with adjustable crushing force; as well as An optical probe, which is mounted on the robotic arm.

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