Torsion test system of lens

Abstract

The utility model provides a torsion test system of a lens, the lens comprises a pedestal and a lens cone, the lens cone is screwed on the top of the pedestal, the torsion test system comprises a clamping mechanism comprising a plurality of chucks; the rotating mechanism is connected with the clamping mechanism; the measuring mechanism is used for bearing the base, measuring an acting force applied to the base in the rotation process of the lens cone, and generating torsion data based on the measured acting force; and a control unit which is electrically connected with the clamping mechanism and the rotating mechanism, is used for controlling the rotating mechanism to drive the plurality of chucks to rotate relative to the measuring mechanism, enables the plurality of chucks to realize circumferential origin alignment, and is used for controlling the plurality of chucks to clamp the periphery of the lens cone, so that the lens cone can be measured. And the rotating mechanism drives the lens cone to rotate through the plurality of chucks. According to the torsion test system provided by the invention, manpower is saved, and the detection efficiency, accuracy and consistency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a torque testing system for a lens. Background Art

[0002] The lens of a capsule endoscope is a miniature lens composed of a barrel and a base, connected by a threaded connection. Friction between the threads creates lens torque. The barrel and base are injection-molded using separate molds, each with different cavities. Each permutation and combination of these components results in different lens torque. This difference in lens torque directly impacts the efficiency of capsule focusing and the yield rate of optical performance during production.

[0003] The lens torque of a capsule endoscope is low, and once the lens barrel and base are properly mated, the torque variation range is small, requiring a very precise torque meter to measure it. With existing capsule endoscopes, the operator places the lens to be tested on a fixture. The torque meter's chuck clamps the fixture, and the operator uses tweezers to grip and rotate the lens barrel. The base is secured in place by the fixture. As the tweezers grip the lens barrel and rotate it, the torque meter's sensor detects the peak torque and manually records it, thereby determining the lens torque.

[0004] However, when operators use tweezers to clamp the lens barrel and drive it to rotate, the downward force on the tweezers is easily detected by the torque meter, resulting in erroneous measurements; at the same time, manual operation is inefficient, and different factors introduced by different people's operations lead to large measurement errors and poor consistency. Utility Model Content

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a lens torque testing system.

[0006] A torque testing system for a lens, wherein the lens comprises a base and a lens barrel, wherein the lens barrel is screwed to the top of the base, and the torque testing system comprises:

[0007] A clamping mechanism including a plurality of clamps;

[0008] a rotating mechanism connected to the clamping mechanism;

[0009] a measuring mechanism, configured to support the base, measure the force applied to the base during the rotation of the lens barrel, and generate torque data based on the measured force; and

[0010] A control unit is electrically connected to the clamping mechanism and the rotating mechanism, and is used to control the rotating mechanism to drive the multiple chucks to rotate relative to the measuring mechanism so that the multiple chucks are aligned in the circumferential origin, and is used to control the multiple chucks to clamp the periphery of the lens barrel, and the rotating mechanism drives the lens barrel to rotate through the multiple chucks.

[0011] The torque testing system in the present application utilizes a control unit to control multiple chucks to clamp the lens barrel, and the base is accommodated in a measuring mechanism. The control unit controls a rotating mechanism to drive the multiple chucks and the lens barrel to rotate relative to the measuring mechanism. During the rotation of the lens barrel relative to the base, the measuring mechanism can measure the force applied by the lens barrel to the base and generate torque data, thereby realizing the automation of torque measurement, avoiding reliance on manual rotation of the lens barrel to measure torque, saving manpower, and improving detection efficiency and consistency.

[0012] The control unit is used to control the rotation mechanism to drive the multiple chucks to rotate and align the multiple chucks to achieve circumferential origin alignment, that is, to align the multiple chucks to the origin in the circumferential direction. Therefore, before the torque test system provided by this application performs lens torque measurement (before the chucks clamp the lens barrel), the control unit can control the alignment of the circumferential origins of the multiple chucks, thereby ensuring that for different lenses to be tested, the multiple chucks all clamp the lens barrel at the origin of the circumference, and then rotate the lens barrel to measure the torque, which is conducive to improving the accuracy and consistency of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention.

[0014] Figure 1 Schematic diagram of the cross-sectional structure of a capsule endoscope lens;

[0015] Figure 2 A schematic diagram of the three-dimensional structure of a lens torque testing system provided in an embodiment of the present application;

[0016] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the clamping mechanism, rotating mechanism, linear moving mechanism, support frame and part of the control unit shown;

[0017] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the clamping mechanism, rotating mechanism and supporting frame shown;

[0018] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure of the clamping mechanism and part of the support frame shown;

[0019] Figure 6 for Figure 5 A schematic cross-sectional view of the clamping mechanism and part of the support frame shown;

[0020] Figure 7 for Figure 3 The three-dimensional structure diagram of the linear moving mechanism and part of the control unit shown;

[0021] Figure 8 for Figure 2 The three-dimensional structural diagram of the measuring mechanism shown.

[0022] The numbers in the figure are:

[0023] 10. Lens; 11. Lens barrel; 12. Base; 1000. Torque test system;

[0024] 100. Clamping mechanism;

[0025] 110. First drive assembly; 111. First driver; 113. Rotating block; 114. Lower bearing;

[0026] 115. Connecting rod; 116. First fixing block; 117. Second fixing block;

[0027] 120, chuck; 130, first photoelectric sensor; 140, first trigger block;

[0028] 200, support frame;

[0029] 210, base plate; 220, upper support plate;

[0030] 230, middle support plate; 231, upper receiving hole; 232, first bearing;

[0031] 235. Adapter block; 236. Upper receiving hole; 237. Second bearing;

[0032] 240. Lower support plate; 241. Lower receiving hole; 242. Slide groove;

[0033] 251. Reinforcement plate; 252. Support column; 260. Safety block;

[0034] 300, rotating mechanism; 301, first motor; 302, reducer; 303, coupling;

[0035] 500, linear motion mechanism;

[0036] 501, second motor; 530, screw rod module; 531, threaded structure; 533, slider;

[0037] 535, second photoelectric sensor; 537, second trigger block;

[0038] 536, third photoelectric sensor; 538, third trigger block;

[0039] 700, measuring mechanism; 710, torque meter; 720, tray; 730, protective block; 740, protective cover;

[0040] 800, control unit; 810, electric control box; 820, bracket; 830, drag chain; 900, client; DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0043] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention.

[0044] In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only used to facilitate the description of this patent and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0045] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0046] This application provides a lens torque testing system for detecting lens torque. The lens may be a miniature lens used in capsule endoscopes. Miniature lenses have thin walls, and when manually measuring torque with tweezers, inaccurate force can easily damage the lens, such as cracks or thread damage on the barrel. The following uses the torque testing system's use to measure lens torque in a capsule endoscope as an example. It should be understood that the torque testing system provided in this application can also measure lenses other than those used in capsule endoscopes.

[0047] See also Figure 1 The lens 10 includes a lens barrel 11 and a base 12. A lens group is provided in the lens barrel 11, and the lens group is provided with at least one lens, such as a convex lens, a concave lens, a filter, etc. The base 12 is formed with a through hole running through its thickness direction, and the bottom of the lens barrel 11 is accommodated and installed in the through hole. Usually, before the lens 10 is focused, the lens barrel 11 is movably connected to the base 12. Specifically, the lens barrel 11 is screwed to the top of the base 12, that is, the lens barrel 11 and the base 12 are threadedly connected, thereby facilitating the subsequent rotation of the lens barrel 11 relative to the base 12 to adjust the focal length of the lens. The friction between the matching threads of the lens barrel 11 and the base 12 forms the torsional force of the lens 10. After the lens 10 completes the focal length adjustment, preferably, the lens barrel 11 is fixed to the base 12, for example, by bonding, to prevent the lens barrel 11 from loosening relative to the base 12, causing the focal length to change. Before focusing the lens 10, the torque of the lens 10 needs to be measured to determine whether the torque of the lens 10 is qualified. Too large or too small a torque of the lens 10 will directly affect the efficiency of lens focusing and the qualified rate of optical performance during the production process of the capsule endoscope.

[0048] See also Figure 2 The torque testing system 1000 provided in this application includes a clamping mechanism 100, a rotating mechanism 300, a measuring mechanism 700, and a control unit 800, which are interconnected. The clamping mechanism 100 includes a plurality of chucks 120; the rotating mechanism 300 is connected to the clamping mechanism 100; the measuring mechanism 700 is used to support the base 12, measure the force applied to the base 12 during the rotation of the lens barrel 11, and generate torque data based on the measured force; the control unit 800 is electrically connected to the clamping mechanism 100 and the rotating mechanism 300, and is used to control the rotating mechanism 300 to drive the plurality of chucks 120 to rotate relative to the measuring mechanism 700, so that the plurality of chucks 120 are aligned in the circumferential direction, and is used to control the plurality of chucks 120 to clamp the periphery of the lens barrel 11, and the rotating mechanism 300 drives the lens barrel 11 to rotate through the plurality of chucks 120.

[0049] The torque testing system 1000 in the present application uses a control unit 800 to control multiple chucks 120 to clamp the lens barrel 11, and the base 12 is accommodated in the measuring mechanism 700. The control unit 800 controls the rotating mechanism 300 to drive the multiple chucks 120 and the lens barrel 11 to rotate relative to the measuring mechanism 700. During the rotation of the lens barrel 11 relative to the base 12, the measuring mechanism 700 can measure the force applied by the lens barrel 11 to the base 12 and generate torque data, thereby realizing the automation of torque measurement, avoiding relying on manual rotation of the lens barrel 11 to measure torque, saving manpower, and improving detection efficiency and consistency.

[0050] The control unit 800 is used to control the rotation mechanism 300 to rotate the multiple chucks 120 and align the multiple chucks 120 with the circumferential origins, i.e., to align the multiple chucks 120 with the origins in the circumferential direction. Therefore, before measuring the torque of the lens 10 (before the chucks 120 clamp the lens barrel 11), the control unit 800 can control the alignment of the circumferential origins of the multiple chucks 120. This ensures that for different lenses 10 to be tested, the multiple chucks 120 clamp the lens barrel 11 at the circumferential origins before rotating the lens barrel 11 to measure the torque, which is beneficial to improving the accuracy and consistency of the test.

[0051] The control unit 800 is electrically connected to the clamping mechanism 100 to control the multiple clamps 120 of the clamping mechanism 100 to clamp or release the lens barrel 11, and is electrically connected to the rotating mechanism 300 to control the rotating mechanism 300 to drive the clamping mechanism 100 to rotate. Figure 2 As shown, in this embodiment, the control unit 800 includes an electrical control box 810, which may include a PLC programmable controller to execute control instructions. The electrical control box 810 is also used to structurally support and carry the clamping mechanism 100, the rotating mechanism 300, and the measuring mechanism 700.

[0052] like Figure 2 As shown, in this embodiment, the torque testing system 1000 includes a client 900, which is in communication with a control unit 800 and is configured to issue a test start instruction to the control unit 800. The control unit 800 is configured to control the plurality of chucks 120 to clamp the periphery of the lens barrel 11 according to the test start instruction, and to control the rotation mechanism 300 to rotate the clamping mechanism 100, the plurality of chucks 120, and the lens barrel 11.

[0053] The client 900 may include, for example, at least one of a computer, a mobile phone, a wearable device, an Internet of Things device, a tablet computer, a virtual reality terminal device, and an augmented reality terminal device, but is not limited thereto.

[0054] The client 900 is in communication with the measuring mechanism 700 to receive torque data generated by the measuring mechanism 700 and determine whether the torque between the base 12 and the lens barrel 11 of the lens 10 being measured is qualified based on the torque data.

[0055] The client 900 is used to control the entire torque test process and can achieve wired or wireless connection with the control unit 800 and the measuring mechanism 700. Specifically, in this embodiment, the client 900 is a test computer installed with the corresponding test software (host computer software). The client 900 communicates with the control unit 800 via a serial port (such as an RS232 port), transmitting control instructions, and simultaneously transmits torque data to the measuring mechanism 700 via the serial port. It is understood that the client 900 can communicate with the control unit 800 and the measuring mechanism 700 using other methods not mentioned above.

[0056] Specifically, in some embodiments, the functions of the client 900 are implemented by the test software installed thereon. The test software actively communicates and controls with the measuring mechanism 700 according to the designed fixed test process flow, and communicates with the measuring mechanism 700 to receive torque data. The collected torque data is analyzed by the test software, and the analyzed force value is compared with the specified standard range by the test software to determine whether the torque of the lens 10 is qualified, and the detection efficiency is high.

[0057] Further, see Figures 3 to 6 The torque testing system 1000 includes a support frame 200, which can be fixed to the control unit 800 or other platforms. In this embodiment, the support frame 200 is fixed to the linear motion mechanism 500 and is used to follow the linear motion mechanism 500 for linear movement.

[0058] The support frame 200 includes a base plate 210 and a lower support plate 240 connected to the base plate 210. The base plate 210 is connected to the linear motion mechanism 500. In other embodiments, the base plate 210 can be fixed to the control unit 800 or other platform. In this embodiment, the base plate 210 extends vertically, and the lower support plate 240 is arranged at an angle to the base plate 210. Specifically, the lower support plate 240 extends horizontally.

[0059] The rotating mechanism 300 is fixed to the supporting frame 200 and is used to move along a straight line with the supporting frame 200 . The output end of the rotating mechanism 300 can rotate relative to the supporting frame 200 .

[0060] The lower support plate 240 is formed with a lower receiving hole 241 extending through its thickness. The thickness of the lower support plate 240 is the vertical direction shown in the figure. The lower receiving hole 241 is annular and is used to pass through the clamping mechanism 100, specifically, the first drive assembly 110.

[0061] The clamping mechanism 100 includes a first drive assembly 110, a first photoelectric sensor 130, and a first trigger block 140. One end of the first drive assembly 110 is connected to the rotation mechanism 300, and the other end of the first drive assembly 110 is connected to multiple clamps 120. The first drive assembly 110 is used to drive the multiple clamps 120 to clamp or release the lens barrel 11. Specifically, the first drive assembly 110 extends vertically, with its top end connected to the rotation mechanism 300 to rotate with it, and its bottom end connected to the multiple clamps 120.

[0062] The clamping mechanism 100 is provided with a plurality of chucks 120. In this embodiment, the clamping mechanism 100 is provided with two chucks 120 arranged opposite each other to clamp the lens barrel 11. The relative positions of the chucks 120 on the circumference are fixed, that is, the angle between adjacent chucks 120 in the circumferential direction is fixed. The chucks 120 are fixed to the bottom of the first drive assembly 110. When the first drive assembly 110 is triggered to close, the chucks 120 move toward each other to clamp the lens barrel 11. When the first drive assembly 110 is triggered to open, the chucks 120 move away from each other to release the lens barrel 11.

[0063] The first drive assembly 110 is inserted into the lower receiving hole 241, the first trigger block 140 is fixed to the first drive assembly 110, and the first photoelectric sensor 130 is fixed to the lower support plate 240. The control unit 800 is used to control the rotation mechanism 300 to drive the first drive assembly 110 and the first trigger block 140 to rotate relative to the first photoelectric sensor 130. When the first trigger block 140 triggers the first photoelectric sensor 130, the first photoelectric sensor 130 sends a circumferential origin alignment signal to the control unit 800. The control unit 800 controls the rotation mechanism 300 to stop rotating based on the circumferential origin alignment signal, thereby achieving circumferential origin alignment of the multiple chucks 120.

[0064] The circumferential origins of the multiple chucks 120 can be aligned by aligning one of the chucks 120 toward the origin. The origin position can be set as needed, and any angular position on the circumference can be defined as the origin. Before the torque testing system 1000 performs torque measurement on the lens 10, the control unit 800 can control the alignment of the circumferential origins of the multiple chucks 120. This ensures that for different lenses 10 to be tested, the multiple chucks 120 all clamp the lens barrel 11 at the origin position before rotating the lens barrel 11 to measure torque, which helps improve the accuracy and consistency of the test.

[0065] Furthermore, the first driving assembly 110 includes a first driver 111 and a rotating block 113 . The bottom of the first driver 111 is connected to a plurality of clamps 120 for driving the plurality of clamps 120 to clamp or release the lens barrel 11 .

[0066] The rotating block 113 is annular and fixed to the outer periphery of the sidewall of the first driver 111. The rotating block 113 is accommodated in the lower receiving hole 241. As the first drive assembly 110 rotates relative to the lower support plate 240, the rotating block 113 and the lower support plate 240 form a clearance fit within the inner sidewall of the lower receiving hole 241. Specifically, the outer periphery of the rotating block 113 matches the lower receiving hole 241. Preferably, both the outer periphery of the rotating block 113 and the lower receiving hole 241 are circular.

[0067] The first trigger block 140 is fixed to the surface of the rotating block 113 , specifically to the top surface of the rotating block 113 . Accordingly, the first photoelectric sensor 130 is disposed on the top surface of the lower support plate 240 .

[0068] The top of the first driver 111 is connected to a rotating mechanism 300, which is used to drive the first driver 111, multiple chucks 120, rotating block 113, and first trigger block 140 to rotate relative to the lower support plate 240. The lower support plate 240 has a sliding groove 242 formed on its radially inner top surface. The sliding groove 242 communicates with the lower receiving hole 241. A lower bearing 114 is provided on the periphery of the rotating block 113. The lower bearing 114 is configured to slide along the sliding groove 242 with the first driver 111. The bottom wall of the sliding groove 242 supports the lower bearing 114 and guides its sliding movement. This ensures greater stability during the rotation of the first driver 111 and the chucks 120, improving the reliability and accuracy of the torque testing system 1000 and preventing damage to the lens 10 and large data errors caused by the rotational shaking of the chuck 120 during measurement. The rotating block 113 is provided with a lower bearing 114 that slides in the slide groove 242, which reduces the friction resistance during the rotation process, makes the rotation of the rotating block 113 smoother, and reduces the influence of the friction between the rotating block 113 and the lower support plate 240 on the torque measurement.

[0069] The clamping mechanism 100 includes a connecting rod 115 fixedly mounted on the top of the first actuator 111. The first actuator 111 is connected to the rotating mechanism 300 via the connecting rod 115 attached to its top. In this embodiment, the connecting rod 115 is in an inverted T-shape and comprises a fixed portion and a coupling portion that are interconnected. The fixed portion is connected to the bottom of the coupling portion and is sheet-shaped. The fixed portion is used to secure to the top surface of the first actuator 111. The coupling portion is rod-shaped and connected to the rotating mechanism 300, and is used to transmit the torque output by the rotating mechanism 300 to the first actuator 111.

[0070] The support frame 200 includes a stacked middle support plate 230 and an adapter block 235. The middle support plate 230 is disposed on top of the adapter block 235 and is fixedly connected to the base plate 210. The middle support plate 230 is used to support the rotating mechanism 300. The base plate 210 extends in a vertical direction in the figure. The extension direction of the middle support plate 230 is arranged at an angle to the extension direction of the base plate 210. Specifically, the extension direction of the middle support plate 230 and the extension direction of the base plate 210 form an angle of 90 degrees. The middle support plate 230 extends in a horizontal direction and is parallel to the extension direction of the lower support plate 240.

[0071] The middle support plate 230 and the adapter block 235 are arranged on the top of the lower support plate 240. The adapter block 235 is clamped between the middle support plate 230 and the connecting rod 115, and the adapter block 235 and the middle support plate 230 are slidingly connected to reduce the friction force of torque transmission between the rotating mechanism 300 and the connecting rod 115, and are conducive to keeping the rotation axis of the rotating mechanism 300 and its load (clamping mechanism 100) coincident, thereby realizing stable torque transmission.

[0072] Specifically, both the middle support plate 230 and the adapter block 235 are formed with upper receiving holes. The middle support plate 230 is formed with an upper receiving hole 231 extending through its thickness, while the adapter block 235 is formed with an upper receiving hole 236 extending through its thickness. The upper receiving hole 231 and the upper receiving hole 236 are interconnected to form a passage, through which the connecting rod 115 passes to connect to the rotating mechanism 300. The adapter block 235 is sandwiched between the middle support plate 230 and the first driver 111. A first bearing 232 is provided on the side of the middle support plate 230 facing the adapter block 235, and a second bearing 237 is provided on the side of the adapter block 235 facing the middle support plate 230. The first bearing 232 and the second bearing 237 form an upper bearing assembly. A first bearing 232 and a second bearing 237 that are slidably connected to each other are provided between the middle support plate 230 and the first driver 111, which greatly reduces the friction during rotation, keeps the rotating mechanism 300 concentric with the clamping mechanism 100, and makes the rotation of the first driver 111 more stable and the torque transmission efficiency higher.

[0073] Specifically, first actuator 111 is an electric cylinder equipped with a pressure sensor. The pressure sensor is used to detect the clamping force applied by the multiple chucks 120 to the lens barrel 11. The control unit 800 controls the movement of the electric cylinder to ensure that the clamping force is within a preset range. Specifically, the control unit 800 controls the clamping force of the multiple chucks 120 on the lens barrel 11 to be within a range of 2-5N, thereby ensuring stable clamping of the lens 10 while preventing damage to the lens 10.

[0074] like Figure 5As shown, the first driving assembly 110 includes a first fixing block 116 and a second fixing block 117. The first fixing block 116 fixes the first driver 111 and the rotating block 113 together. The second fixing block 117 fixes the first driver 111 and the rotating block 113 together. The first fixing block 116 and the second fixing block 117 are spaced apart.

[0075] In this embodiment, the client 900 is used to issue an origin alignment instruction to the control unit 800. The control unit 800 controls the rotation of the rotating mechanism 300 according to the origin alignment instruction. Upon receiving the circumferential origin alignment signal output by the first photoelectric sensor 130, the control unit 800 controls the rotation of the rotating mechanism 300 to stop rotating, thereby completing the circumferential origin alignment of the multiple chucks 120. In some embodiments, the torque testing system 1000 is not equipped with the client 900, or the client 900 is not used to issue a circumferential origin alignment instruction or a test start instruction. In this case, the control unit 800 can be used to execute its internally stored program instructions to control the rotation and stopping of the rotating mechanism 300, thereby achieving circumferential origin alignment of the multiple chucks 120 and completing subsequent test process control.

[0076] like Figure 4 As shown, the rotating mechanism 300 includes a first motor 301, a reducer 302, and a coupling 303, which are connected in sequence. The output end of the coupling 303 is connected to the clamping mechanism 100, specifically to the top of the connecting rod 115, to drive the clamping mechanism 100 to rotate. The output shaft of the first motor 301 is connected to the reducer 302. The reducer 302 can reduce the speed of the first motor 301 and provide greater torque. The output shaft speed is more uniform and the rotational motion is more stable, which makes the measurement results of the measuring mechanism 700 more accurate.

[0077] The support frame 200 includes an upper support plate 220, which is arranged on the top of the middle support plate 230. The upper support plate 220 is arranged at the bottom of the reducer 302 to support the first motor 301 and the reducer 302. The middle support plate is arranged at the bottom of the coupling 303 to support the first motor 301, the reducer 302 and the coupling 303. Figure 4 As shown, the support frame 200 is further provided with a reinforcing plate 251 for reinforcing the upper support plate 220, and the reinforcing plate 251 is fixed between the base plate 210 and the upper support plate 220. The support frame 200 is further provided with a support column 252 for improving the supporting performance of the upper support plate 220 and the middle support plate 230, and the support column 252 is fixed between the upper support plate 220 and the middle support plate 230.

[0078] Please combine Figure 3 See Figure 7In this embodiment, the torque testing system 1000 includes a linear motion mechanism 500 , which is fixed to the control unit 800 or other platform. The linear motion mechanism 500 includes a slider 533 , and the substrate 210 is fixed to the slider 533 .

[0079] The linear motion mechanism 500 is used to drive the rotation mechanism 300 in linear motion. Specifically, in this embodiment, the linear motion mechanism 500 is arranged vertically and is used to drive the rotation mechanism 300 in vertical up and down motion. The base plate 210 of the support frame 200 is fixed to the slider 533 of the linear motion mechanism 500. In turn, the support frame 200 drives the rotation mechanism 300 and the clamping mechanism 100 to move up and down along the slider 533.

[0080] The linear motion mechanism 500 includes a second motor 501, a coupling, and a screw module 530. The coupling is connected between the second motor 501 and the screw module 530. The screw module 530 includes a threaded structure 531 and a slider 533 connected to each other. The second motor 501 is used to drive the slider 533 to move along the threaded structure 531.

[0081] The control unit 800 includes a bracket 820 fixed to the electrical control box 810, the linear moving mechanism 500 includes a second photoelectric sensor 535 fixed to the bracket 820, and a second trigger block 537 fixed to the slider 533. The control unit 800 is used to control the second motor 501 to drive the slider 533 to move relative to the bracket 820. When the second trigger block 537 triggers the second photoelectric sensor 535, the second photoelectric sensor 535 sends a linear direction origin alignment signal. The control unit 800 controls the second motor 501 to stop rotating according to the linear direction origin alignment signal to achieve linear direction origin alignment.

[0082] Specifically, the second trigger block 537 is fixed to the slider 533 and can move up and down with the slider 533. The second photoelectric sensor 535 is fixed to the bracket 820 and is stationary relative to the measuring mechanism 700 and the control unit 800. When the control unit 800 controls the second motor 501 to drive the slider 533 relative to the bracket 820, the second trigger block 537 moves relative to the second photoelectric sensor 535. When the second trigger block 537 triggers the second photoelectric sensor 535, it generates a linear origin alignment signal. Based on the linear origin alignment signal, the control unit 800 controls the second motor 501 to stop rotating, thereby achieving linear origin alignment of the linear motion mechanism 500.

[0083] Aligning the linear origin of the linear motion mechanism 500 refers to aligning the slider 533, the multiple chucks 120, or other components of the torque testing system 1000 with the linear origin. The linear origin can be determined as needed. In this embodiment, aligning the linear origin of the linear motion mechanism 500 refers to aligning the components of the torque testing system 1000 with the vertical origin. For example, the slider 533 may be aligned 50 cm above the measuring mechanism 700, or the multiple chucks 120 may be aligned 10 cm above the measuring mechanism 700, or at some other vertical height.

[0084] Based on this linear direction origin, the control unit 800 can control the second motor 501 to drive the slider 533 to move downward relative to the bracket 820 (control unit 800), thereby driving multiple clamps 120 to gradually approach the lens 10 from above the lens 10, making it easier for subsequent multiple clamps 120 to clamp the lens barrel 11.

[0085] like Figure 7 As shown, the linear motion mechanism 500 includes a third trigger block 538 and a third photoelectric sensor 536. The third photoelectric sensor 536 and the second photoelectric sensor 535 are fixed to the surface of the bracket 820 at intervals. The third trigger block 538 and the second trigger block 537 are fixed to the surface of the slider 533 at intervals. When the control unit 800 controls the second motor 501 to rotate, the coupling and the screw module 530 are rotated. When the screw module 530 rotates, the thread structure 531 drives the slider 533 to move up and down. The slider 533 drives the second trigger block 537 and the third trigger block 538 to move up and down synchronously.

[0086] The control unit 800 includes a drag chain 830, through which power lines, signal lines, and other circuits are routed. One end of the drag chain 830 is fixed to the electrical control box 810 or bracket 820, and the other end is fixed to the rotating mechanism 300, thereby enabling communication between the control unit 800 and the clamping mechanism 100, the rotating mechanism 300, and the linear motion mechanism 500.

[0087] After the linear moving mechanism 500 completes the alignment of the linear origin, the client 900 may send a test start instruction to the control unit 800 .

[0088] According to the test start instruction, the control unit 800 controls the linear moving mechanism 500 to drive the rotating mechanism 300 and the clamping mechanism 100 to move downward in the vertical direction, that is, the chuck 120 moves from the position aligned with the linear direction origin toward the lens 10 until the third trigger block 538 triggers the third photoelectric sensor 536, and the third photoelectric sensor 536 sends a boundary signal. The control unit 800 controls the second motor 501 to stop rotating according to the boundary signal. At this time, multiple chucks 120 stop at the periphery of the lens barrel 11.

[0089] The control unit 800 continues to control the first driver 111 to drive the multiple chucks 120 to clamp the lens barrel 11 according to the test start instruction, and controls the rotating mechanism 300 to drive the multiple chucks 120 to rotate. At this time, the measuring mechanism 700 detects and generates torque data, and the client 900 receives the torque data and analyzes and determines whether the torque of the lens to be tested is qualified.

[0090] Preferably, after the multiple chucks 120 clamp the lens barrel 11, while the clamping mechanism 100 drives the lens barrel 11 to rotate, the control unit 800 is configured to control the linear motion mechanism 500 to drive the lens barrel 11 to move toward the base 12. That is, the multiple chucks 120 drive the lens barrel 11 to simultaneously rotate circumferentially and move downward in the vertical direction, and the downward movement speed of the multiple chucks 120 matches the pitch of the thread of the lens barrel 11 (that is, the multiple chucks 120 drive the lens barrel 11 to rotate one circle and simultaneously drive the lens barrel 11 downward toward the base 12 at a uniform speed by a distance of one thread pitch). This avoids the situation where the multiple chucks 120 hold the lens barrel 11 in an unchanged vertical position after the lens barrel 11 and the base 12 are tightened together during the measurement process, causing the base 12 to move upward relative to the measuring mechanism 700 and the vertical friction between the lens 10 and the measuring mechanism 700 to be erroneously measured, thereby improving the accuracy of the test.

[0091] In some embodiments, the torque testing system 1000 is not provided with the linear motion mechanism 500 , and the support frame 200 can be fixed to the control unit 800 or other platforms.

[0092] In this embodiment, the client 900 is configured to issue an origin alignment instruction to the control unit 800, and the control unit 800 is configured to control the movement of the linear motion mechanism 500 according to the origin alignment instruction to achieve linear origin alignment of the linear motion mechanism 500. In some embodiments, the torque testing system 1000 does not include a client 900, and the control unit 800 is configured to control the linear motion mechanism 500 according to program instructions stored therein to achieve linear origin alignment, and / or to control the rotation mechanism 300 according to program instructions stored therein to control the rotation mechanism 300 to rotate and stop so that the multiple chucks 120 achieve circumferential origin alignment.

[0093] Preferably, the client 900 is used to issue an origin alignment instruction to achieve circumferential origin alignment of the plurality of chucks 120, and linear origin alignment of the linear motion mechanism 500. In some embodiments, the client 900 is used to issue an origin alignment instruction to achieve circumferential origin alignment of the plurality of chucks 120, or linear origin alignment of the linear motion mechanism 500.

[0094] Please combine Figure 2 See Figure 8The measuring mechanism 700 includes a torque meter 710 and a tray 720 connected to each other. The tray 720 is used to accommodate and secure the base 12. The tray 720 is provided with a groove for accommodating the base 12. When the clamping mechanism 100 drives the lens barrel 11 to rotate relative to the base 12, the torque meter 710 is used to measure the force applied by the lens barrel 11 to the base 12 and generate torque data based on the measured force. Specifically, the tray 720 is fixed to the sensor probe of the torque meter 710 to ensure that torque can be transmitted to the sensor probe of the torque meter 710.

[0095] The client 900 is used to receive and analyze and process the torque data. It is understandable that in some embodiments, the torque testing system 1000 is not provided with the client 900. In these embodiments, the control unit 800 is used to execute program instructions to control the torque testing system 1000 to complete the torque test of the lens. The control unit 800 is communicated with the measuring mechanism 700 to receive the torque data generated by the measuring mechanism 700 and determine whether the torque of the lens 10 is qualified.

[0096] like Figure 8 As shown, the measuring mechanism 700 preferably includes a protective block 730. The protective block 730 is fixed to the surface of the control unit 800, surrounding the tray 720 and the sensor probe of the torque meter 710 to ensure that the test is not disturbed by external forces. The top surface of the protective block 730 is designed with multiple magnets, which are embedded in cylindrical holes formed in the top surface of the protective block 730.

[0097] Accordingly, the measuring mechanism 700 includes a protective cover 740. This cover is fixed to the control unit 800 and features multiple magnets on its underside, embedded within cylindrical holes formed on the underside. When not testing, the cover 740 can be placed over the protective block 730, where the magnets attract each other, ensuring that the sensor probe of the torque meter 710 is fully enclosed, preventing damage to the sensor from external forces.

[0098] like Figure 4 As shown, the support frame 200 includes a safety block 260 connected to the bottom of the base plate 210. The bottom of the safety block 260 extends toward the measuring mechanism 700 and exceeds the bottom of the clamping mechanism 100 (multiple clamps 120), providing a safety distance between the clamping mechanism 100 and the measuring mechanism 700, preventing the rotating mechanism 300 from colliding with the measuring mechanism 700 after falling due to gravity or other reasons.

[0099] Testing process:

[0100] The client 900 sends an origin alignment instruction to the control unit 800 .

[0101] The control unit 800 is used to control the second motor 501 to drive the slider 533 to move relative to the bracket 820 according to the origin alignment instruction. When the second trigger block 537 triggers the second photoelectric sensor 535, the second photoelectric sensor 535 sends a linear direction origin alignment signal. The control unit 800 controls the second motor 501 to stop rotating according to the linear direction origin alignment signal to achieve linear direction origin alignment.

[0102] The control unit 800 also controls the rotation of the rotating mechanism 300 according to the origin alignment instruction. When the first trigger block 140 triggers the first photoelectric sensor 130, the first photoelectric sensor 130 sends a circumferential origin alignment signal to the control unit 800. The control unit 800 controls the rotating mechanism 300 to stop rotating according to the circumferential origin alignment signal, and multiple chucks 120 achieve circumferential origin alignment.

[0103] After the linear motion mechanism 500 completes the alignment of the linear origin, the operator can place the lens 10 to be tested for torque in the tray 720 , and the client 900 can send a test start instruction to the control unit 800 .

[0104] According to the test start instruction, the control unit 800 controls the second motor 501 of the linear moving mechanism 500 to drive the slider 533 to drive the rotating mechanism 300 and the clamping mechanism 100 to move downward in the vertical direction, that is, the chuck 120 moves from the position aligned with the linear direction origin toward the lens 10 until the third trigger block 538 triggers the third photoelectric sensor 536, and the third photoelectric sensor 536 sends a boundary signal. The control unit 800 controls the second motor 501 to stop rotating according to the boundary signal. At this time, multiple chucks 120 stop at the periphery of the lens barrel 11.

[0105] The control unit 800 continues to control the first driver 111 to drive the multiple clamps 120 to close according to the test start instruction, clamping the lens barrel 11 and maintaining the clamping force.

[0106] After receiving a signal indicating the first actuator 111 has completed closing, the control unit 800 controls the rotation mechanism 300 to rotate the multiple chucks 120 of the clamping mechanism 100. At this point, the multiple chucks 120 are clamped onto the lens barrel 11, and the base 12 of the lens 10 is secured within the tray 720, causing the lens barrel 11 to rotate relative to the base 12. At this point, the measurement mechanism 700 detects the reaction force transmitted from the tray 720. According to the law of conservation of force, the reaction force equals the action force. Therefore, the force detected by the measurement mechanism 700 is equal to the torque of the lens 10 under test. The measurement mechanism 700 then detects and generates torque data.

[0107] Preferably, to ensure the accuracy of the collected data, during the process of the multiple clamps 120 clamping the lens barrel 11 for rotation testing, the control unit 800 also controls the slider 533 of the linear motion mechanism 500 to move downward, thereby driving the rotating mechanism 300 and the clamping mechanism 100 to move downward.

[0108] The client 900 receives the torque data and analyzes it to determine whether the lens torque under test meets the requirements. The measurement mechanism 700 uploads the collected torque data to the test software on the client 900. In some embodiments, the test software collects torque data at a rate of 10 ms per time, for a total of 10 seconds, resulting in approximately 1,000 sets of data. The test software then uses a mathematical formula to determine the median of the data and compares the median to the standard range. If the median is within the standard range (greater than the minimum value and less than the maximum value of the standard range), the test software determines that the torque meets the requirements. Otherwise, the test software determines that the torque meets the requirements. The test software then displays the results on the interface for the operator to review.

[0109] The technical solution provided in this application automates lens torque testing, saving manpower and improving efficiency. By comparing torque data with standard ranges in real time, it is possible to test and screen the torque of the lens under test 10. Using Excel spreadsheets, actual test data can be organized and recorded strictly according to the test process, ensuring data accuracy and traceability.

[0110] The above describes in detail the optional implementation methods of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above implementation methods. Within the technical concept of the present invention, the technical solution of the present invention can be modified in many simple ways, and these simple modifications all fall within the protection scope of the present invention.

[0111] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the various possible combinations will not be described separately in the embodiments of the present invention.

[0112] In addition, various different embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed in the present invention.

Claims

1. A lens torque testing system, characterized in that: The lens includes a base and a lens barrel, and the lens barrel is screwed to the top of the base. The torque testing system includes: A clamping mechanism including a plurality of clamps; a rotating mechanism connected to the clamping mechanism; a measuring mechanism, configured to support the base, measure the force applied to the base during the rotation of the lens barrel, and generate torque data based on the measured force; and A control unit is electrically connected to the clamping mechanism and the rotating mechanism, and is used to control the rotating mechanism to drive the multiple chucks to rotate relative to the measuring mechanism so that the multiple chucks are aligned in the circumferential origin, and is used to control the multiple chucks to clamp the periphery of the lens barrel, and the rotating mechanism drives the lens barrel to rotate through the multiple chucks.

2. The torque testing system according to claim 1, wherein: The torque testing system includes a support frame, the support frame includes a base plate and a lower support plate connected to the base plate, the rotating mechanism is fixed to the support frame, and the lower support plate is formed with a lower receiving hole extending through the thickness direction thereof; The clamping mechanism includes a first driving component, a first photoelectric sensor, and a first trigger block, one end of the first driving component is connected to the rotating mechanism, and the other end of the first driving component is connected to the multiple clamps, and the first driving component is used to drive the multiple clamps to clamp or release the lens barrel; The first driving component is inserted into the lower accommodating hole, the first trigger block is fixed to the first driving component, and the first photoelectric sensor is fixed to the lower supporting plate; The control unit is used to control the rotating mechanism to drive the first driving assembly and the first trigger block to rotate relative to the first photoelectric sensor. When the first trigger block triggers the first photoelectric sensor, the first photoelectric sensor sends a circumferential origin alignment signal to the control unit. The control unit controls the rotating mechanism to stop rotating according to the circumferential origin alignment signal, and the multiple chucks achieve circumferential origin alignment.

3. The torque testing system according to claim 2, wherein: The first driving assembly includes a first driver and a rotating block, the bottom of the first driver is connected to the multiple chucks, the rotating block is annular and fixed to the outer periphery of the side wall of the first driver, the first trigger block is fixed to the surface of the rotating block, the top of the first driver is connected to the rotating mechanism, the rotating mechanism is used to drive the first driver, the multiple chucks, the rotating block and the first trigger block to rotate relative to the lower support plate, the lower support plate forms a slide groove on the top surface of the radial inner side thereof, the slide groove is connected to the lower accommodating hole, and a lower bearing is provided on the periphery of the rotating block, and the lower bearing is used to follow the first driver to slide in the slide groove.

4. The torque testing system according to claim 3, wherein: The support frame includes a stacked middle support plate and an adapter block, the middle support plate is fixedly connected to the base plate, the middle support plate and the adapter block are arranged on the top of the lower support plate, the middle support plate and the adapter block are both formed with an upper accommodating hole, the two upper accommodating holes formed by the middle support plate and the adapter block penetrate each other and form a channel, the clamping mechanism includes a connecting rod fixedly arranged on the top of the first driver, the connecting rod passes through the channel to connect the rotating mechanism, the adapter block is clamped between the middle support plate and the first driver, the middle support plate is provided with a first bearing on the side of the adapter block facing the middle support plate, and the adapter block is provided with a second bearing on the side of the adapter block facing the middle support plate, and the first bearing and the second bearing constitute an upper bearing group.

5. The torque testing system according to claim 3, wherein: The first driver is an electric cylinder with a pressure sensor, and the pressure sensor is used to detect the clamping force applied by the multiple clamps to the lens barrel. The control unit controls the movement of the electric cylinder so that the clamping force is within a preset range.

6. The torque testing system according to any one of claims 1 to 5, wherein: The rotating mechanism includes a first motor, a reducer and a coupling connected in sequence, and the output end of the coupling is connected to the clamping mechanism to drive the clamping mechanism to rotate.

7. The torque testing system according to any one of claims 2 to 5, wherein: It includes a linear moving mechanism, which includes a second motor and a screw module connected to each other. The screw module includes a threaded structure and a slider connected to each other. The second motor is used to drive the slider to move along the threaded structure. The substrate is fixed to the slider.

8. The torque testing system according to claim 7, wherein: The control unit includes a bracket, the linear movement mechanism includes a second photoelectric sensor fixed to the bracket, and a second trigger block fixed to the slider, the control unit is used to control the second motor to drive the slider to move relative to the bracket, when the second trigger block triggers the second photoelectric sensor, the second photoelectric sensor sends a linear direction origin alignment signal, and the control unit controls the second motor to stop rotating according to the linear direction origin alignment signal to achieve linear direction origin alignment.

9. The torque testing system according to claim 7, wherein: When the clamping mechanism drives the lens barrel to rotate, the control unit is used to control the linear movement mechanism to drive the lens barrel to move toward the base.

10. The torque testing system according to claim 7, wherein: The measuring mechanism includes a torque meter and a tray connected to each other. The tray is used to accommodate the base. When the clamping mechanism drives the lens barrel to rotate relative to the base, the torque meter is used to measure the force applied by the lens barrel to the base, and form the torque data based on the measured force.

11. The torque testing system according to claim 8, wherein: The torque testing system includes a client, which is communicatively connected to the control unit and is used to send an origin alignment instruction and a test start instruction to the control unit; The control unit is used to control the rotation of the rotating mechanism according to the origin alignment instruction to achieve circumferential origin alignment of the plurality of chucks; and / or to control the movement of the linear moving mechanism according to the origin alignment instruction to achieve linear origin alignment of the linear moving mechanism; The control unit is used to control the multiple clamps to clamp the periphery of the lens barrel according to the test start instruction, and control the rotating mechanism to drive the clamping mechanism to rotate; The client is used to receive the torque data generated by the measuring mechanism, and determine whether the torque between the base and the lens barrel of the lens being measured is qualified according to the torque data.

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