A torsion bar detection tool and automated detection equipment

Abstract

The application discloses a torsion rod detection tool and an automatic detection equipment. The tool comprises a fixing assembly and a torsion detection assembly. The fixing assembly is formed by two fixing blocks with half-tooth grooves to form a first tooth groove meshing with a first tooth part of the torsion rod, so that reliable fixing is realized. The torsion detection assembly comprises a torsion block rotatably assembled on a mounting seat, the torsion block is provided with a second tooth groove capable of being radially assembled into a second tooth part of the torsion rod and a lever arm extending in the radial direction. The mounting seat is provided with a detection module and a driving module acting on two ends of the lever arm respectively. The driving module drives the lever arm to drive the torsion block to rotate, and the detection module accurately obtains a torsion angle by measuring the displacement of the lever arm and conversion based on a lever ratio. The tool is fast in clamping, reliable in positioning and high in detection precision. The corresponding automatic equipment integrates the tool, and realizes full-process automation of the torsion rod from automatic feeding, correction, function detection, appearance re-inspection to intelligent sorting.

Description

Technical Field

[0001] This invention belongs to the field of torsion bar stiffness testing technology, specifically relating to a torsion bar testing fixture and automated testing equipment. Background Technology

[0002] As a key load-bearing and elastic component in automotive suspensions, construction machinery, and other systems, the torsional stiffness of the torsion bar is a core indicator for measuring its performance and reliability. During the manufacturing process, a specified torque must be applied to the torsion bar, and the resulting torsional angle must be precisely measured to determine whether its stiffness is up to standard.

[0003] Traditional testing methods often employ simple fixtures, such as using a vise to fix one end, manually applying torque to the other end, and measuring the angle with a general-purpose measuring tool. This method is not only inefficient and has poor repeatability, but also has unreliable clamping, making it prone to slippage or warping during testing, introducing significant errors, and failing to meet the precision and efficiency requirements of modern industry.

[0004] To overcome the aforementioned shortcomings and improve detection accuracy, the industry has developed more specialized detection solutions. One typical solution involves using two sets of independent, toothed clamps that engage with the first tooth section to be fixed and the second tooth section to be twisted at both ends of the torsion bar, respectively. During detection, the two sets of clamps are inserted into both ends of the torsion bar, and then the clamp at the end to be twisted is rotated. The relative deflection angle between the two sets of clamps is directly measured using a high-precision sensor (such as an encoder), and this angle is the torsion angle of the torsion bar. This method achieves slip-free, precise torque transmission and angle measurement through toothed engagement, significantly improving detection accuracy in principle.

[0005] However, this solution still faces significant bottlenecks in practical applications, severely hindering its widespread adoption. First, the initial clamping and positioning requirements are extremely high, necessitating manual or auxiliary equipment to precisely align the teeth at both ends of the torsion bar and axially insert them into the closed toothed grooves of the two sets of clamping blocks. This operation is cumbersome and time-consuming. Second, the entire inspection process (including loading, alignment, clamping, testing, and unloading) requires a high degree of manual intervention, making it difficult to synchronize and integrate with automated production lines. This limits the solution primarily to laboratory sampling or offline testing scenarios, failing to meet the urgent needs of large-scale production lines for fully automated, efficient, and highly consistent inspections.

[0006] Therefore, based on some of the situations in the prior art described above, this application has made further designs and improvements. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0008] A torsion bar testing fixture for detecting the torsion angle of a torsion bar, wherein the end of the torsion bar to be fixed has a first tooth and the end to be torsion has a second tooth, comprising:

[0009] A fixing component is used to fix the end of the torsion bar to be fixed, including a first fixing block and a second fixing block. The first fixing block and the second fixing block are respectively provided with semi-circular semi-tooth grooves. The two sets of semi-tooth grooves are closed to form a complete first tooth groove. The first tooth groove meshes with the first tooth to restrict the rotation and tilting of the torsion bar.

[0010] A torsion detection assembly for clamping and torsionping the end of the torsion bar to be torsion, including a mounting base on which a torsion block is rotatably mounted, the torsion block having a second tooth groove adapted to the shape of the second tooth, the second tooth groove being open in a direction perpendicular to the axis of the torsion bar to allow the second tooth to be radially inserted;

[0011] The torsion block is fixed with a lever arm extending radially, the lever arm being fulcrum at the rotation center of the torsion block; the mounting base is equipped with a detection module and a drive module, the detection module including a retractable measuring rod, and the drive module including a drive rod, the measuring rod and the drive rod respectively abutting against the two ends of the lever arm.

[0012] Furthermore, the distance L from the contact point of the measuring rod and the contact point of the driving rod to the rotation center is equal, and the ratio of this distance L to the maximum inner diameter R of the second tooth groove satisfies 3 < L / R < 10.

[0013] Furthermore, the first fixing block is mounted on the mounting base, so that during testing, by driving the mounting base to move downward, the clamping of the end to be fixed and the insertion of the end to be twisted of the torsion bar can be completed simultaneously.

[0014] Furthermore, the torsion block is connected to the mounting base via a reset elastic element, which is used to reset the torsion block to the initial angular position that puts the measuring rod in the initial compressed state when it is not in the detection state.

[0015] An automated testing device includes a base, on which a conveyor frame is mounted, and a conveyor belt is mounted on the conveyor frame. Positioning grooves for accommodating torsion bars are evenly distributed along the conveying direction on the conveyor belt. The following are arranged sequentially along the conveying direction of the conveyor belt:

[0016] The aligning mechanism is used to adjust the circumferential orientation of the torsion bar.

[0017] A torsion bar testing mechanism, including any of the torsion bar testing fixtures described above, is used to test the torsion angle of a torsion bar;

[0018] Torsion anomaly detection mechanism is used to perform appearance and deformation detection on torsion bars that have completed torsion angle detection;

[0019] The material sorting mechanism is used to sort and discharge torsion bars based on the test results.

[0020] Furthermore, the alignment mechanism includes an alignment toothed plate located above the conveyor belt, and the surface of the alignment toothed plate facing the conveyor belt is provided with alignment tooth grooves that mesh with the first tooth.

[0021] Furthermore, the torsion bar detection mechanism also includes a torsion mounting frame and a fixed mounting frame. A lifting drive module is mounted on the torsion mounting frame, and the mounting base is connected to the lifting drive module. An upper cylinder is mounted on the fixed mounting frame, and a second fixing block is connected to the output end of the upper cylinder. The second fixing block has a passage groove for the conveyor belt to pass through.

[0022] Furthermore, the torsion anomaly detection mechanism includes a first visual inspection module and a second visual inspection module. The first visual inspection module is located directly above the conveyor belt and is used to acquire a top-view profile image of the torsion bar to detect its straightness and overall bending deformation. The second visual inspection module is located on the side of the conveyor belt near the second tooth and is used to acquire a side view image of the torsion bar to detect end and side defects.

[0023] Furthermore, the material unloading and sorting mechanism includes:

[0024] The first discharge channel is located at the end of the conveyor belt and is used to receive qualified torsion bars.

[0025] The second discharge channel is located on one side of the conveyor belt and is used to receive defective torsion bars.

[0026] A pusher cylinder is located on the other side of the conveyor belt opposite to the second discharge channel, and is used to push the defective torsion bar laterally to the second discharge channel.

[0027] Compared with existing technologies, this invention provides a torsion bar detection solution with a compact structure, high detection accuracy, and easy integration into automation. Its core lies in combining a lateral radial insertion clamping structure with a lever amplification detection mechanism, solving the problems of cumbersome clamping and difficulty in achieving efficient online detection in traditional methods.

[0028] The testing fixture described in this application has the following beneficial technical effects:

[0029] 1. Both the fixing component and the torsion detection component adopt a semi-circular open toothed groove design. The torsion bar does not require axial alignment and can be directly inserted radially into the semi-toothed groove of the first fixing block, and the second fixing block closes to complete the fixation of the first tooth; at the same time, the second tooth at its other end can be directly inserted radially into the second toothed groove of the torsion block. This design greatly simplifies the clamping action, making this fixture easy to integrate into automated testing equipment.

[0030] 2. The measuring rod of the detection module and the driving rod of the driving module act on both ends of the lever arm, forming a lever system with the rotation center of the torsion block as the fulcrum, which can amplify the displacement caused by the torsion angle. The larger the ratio of the distance L from the measuring rod or driving rod to the rotation center to the maximum inner diameter R of the second tooth groove, the more significant the amplification effect and the higher the detection accuracy.

[0031] 3. By setting the first fixing block on the mounting base, the clamping (fixed end) and installation (torsion end) of both ends of the torsion bar can be completed simultaneously by driving the mounting base to move downward. The action integration is high and the time for single-piece inspection is shortened.

[0032] The automated inspection equipment described in this application has the following beneficial technical effects: Integrating the aforementioned tooling into the production line, along with a positioning mechanism, a vision inspection mechanism, and a sorting mechanism, achieves fully automated inspection of torsion bars. The positioning mechanism ensures that each torsion bar enters the inspection station with a uniform circumferential posture, avoiding problems such as torsion bar damage due to mismatched tooth angles when the fixing component fixes the first tooth. After mechanical performance testing, the vision inspection mechanism performs a visual review from both top and side views, filtering out products with defects such as out-of-tolerance straightness and surface cracks. Attached Figure Description

[0033] Figure 1 This is a 3D view of an automated testing equipment.

[0034] Figure 2 This is a top view of an automated testing device.

[0035] Figure 3 This is a planar structural diagram of a torsion bar.

[0036] Figure 4 This is a three-dimensional view of the positive positioning tooth plate.

[0037] Figure 5 This is a structural diagram of the conveyor belt at the torsion bar detection mechanism.

[0038] Figure 6 This is a structural diagram of the torsion bar detection mechanism and the conveyor belt.

[0039] Figure 7 This is a 3D view of the top cylinder.

[0040] Figure 8 This is a 3D view of the mounting base.

[0041] Figure 9 This is a planar structural diagram of the torsion detection component.

[0042] Figure 10 This is a structural diagram of the end of the conveyor belt.

[0043] The following is an explanation of the reference numerals in the attached figures:

[0044] 100. Abutment;

[0045] 200. Conveyor frame; 210. Conveyor belt; 211. Positioning groove; 220. Stop block;

[0046] 300. Orientation mechanism; 310. Orientation gear plate; 311. Orientation gear groove;

[0047] 400. Torque bar detection mechanism; 410. First fixed block; 411. Half tooth groove; 420. Second fixed block; 421. Through groove; 430. Torque mounting bracket; 431. Lifting drive module; 440. Mounting base; 450. Torque block; 451. Second tooth groove; 460. Lever arm; 470. Detection module; 471. Measuring rod; 480. Drive module; 481. Drive rod; 490. Fixed mounting bracket; 491. Upper cylinder;

[0048] 500. Torsion anomaly detection mechanism; 510. First vision detection module; 520. Second vision detection module;

[0049] 600. Material unloading and sorting mechanism; 610. First unloading channel; 620. Second unloading channel; 630. Pushing cylinder;

[0050] 700, Torsion bar; 710, End to be fixed; 711, First tooth; 720, End to be twisted; 721, Second tooth. Detailed Implementation

[0051] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0052] In the following embodiments, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0053] In the description of this invention, it should be understood that terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the description of this invention; therefore, they should not be construed as limiting this invention. Furthermore, terms such as first, second, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this invention, unless otherwise expressly specified and limited, terms such as installation, connection, linking, etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] This invention provides an automated testing device and core tooling for efficiently and accurately detecting the torsional performance and appearance quality of torsion bars 700. This device is particularly suitable for online full inspection of mass-produced torsion bar 700 parts, such as those used in automotive suspension systems. The entire device integrates modules along conveyor belt 210, including a positioning mechanism 300, a torsion bar detection mechanism 400, a torsion anomaly detection mechanism 500, and a material sorting mechanism 600, forming a complete automated testing production line.

[0055] Reference Appendix Figures 1 to 10 The automated testing equipment includes a base 100, on which a conveyor frame 200 is fixedly mounted. A conveyor belt 210 is mounted on the conveyor frame 200, and multiple "V"-shaped or "U"-shaped positioning grooves 211 are fixed at equal intervals along the conveying direction on the conveyor belt 210. These positioning grooves 211 are used to accommodate and initially position the torsion bar 700. Stoppers 220 are provided on both sides of the conveyor belt 210 along its width direction, and these stoppers 220 are used for axial positioning of the torsion bar 700.

[0056] The aligning mechanism 300 is located upstream of the inspection station. In a preferred embodiment, as... Figure 3 and 4 As shown, the alignment mechanism 300 includes an alignment toothed plate 310. The lower surface of the alignment toothed plate 310 is machined with an alignment tooth groove 311 that meshes with the first tooth 711 of the end 710 to be fixed of the torsion bar 700. When the conveyor belt 210 transports the torsion bar 700 to the alignment station, the alignment tooth groove 311 meshes with the first tooth 711. During this process, if there is a deviation in the circumferential angle of the torsion bar 700, it will rotate slightly under the action of the meshing force until it is fully engaged, thereby correcting it to a uniform preset angle. This step ensures that all subsequent torsion bars 700 enter the inspection fixture with a completely consistent posture, which is a key prerequisite for ensuring the repeatability accuracy of clamping and inspection.

[0057] The torsion bar testing mechanism 400 is the core component for performing torsion angle testing, and its core part is the torsion bar testing fixture. For example... Figures 5 to 9 As shown, the torsion bar testing fixture mainly includes a fixing component and a torsion testing component.

[0058] The fixing assembly is used to securely fix the end 710 of the torsion bar 700. It includes a first fixing block 410 and a second fixing block 420. A semi-circular semi-tooth groove 411 is respectively formed on the opposing surfaces of the first fixing block 410 and the second fixing block 420. When the first fixing block 410 and the second fixing block 420 are closed, the two semi-tooth grooves 411 together form a complete first tooth groove, which precisely meshes with the first tooth 711 of the torsion bar 700. This design achieves dual constraints: firstly, it completely restricts the circumferential rotation of the first tooth 711; secondly, it prevents the end 710 of the torsion bar 700 from tilting when radial force is applied to the end 720 of the torsion bar 700.

[0059] The torsion detection assembly is used to clamp the torsion end 720 of the torsion bar 700 and apply controllable torsion. It includes a mounting base 440, which is connected to a torsion mounting frame 430 via a linear guide pair and can be driven vertically by a lifting drive module 431 mounted on the torsion mounting frame 430. A torsion block 450 is rotatably mounted on the mounting base 440 via bearings. The center of the torsion block 450 has a second tooth groove 451 that matches the shape of the second tooth 721 of the torsion end 720 of the torsion bar 700. The second tooth groove 451 is fully open in a direction perpendicular to the axis of the torsion bar 700, forming a "C" or "U" shaped bayonet, allowing the second tooth 721 to be directly inserted from the side and radially without axial alignment.

[0060] A lever arm 460 extending outward is fixedly mounted on the torsion block 450. The torsion block 450 is located within the middle section of the lever arm 460. A detection module 470 and a drive module 480 are also mounted on the mounting base 440. The detection module 470 is preferably a high-precision displacement sensor, and its probe forms an elastically extendable measuring rod 471. The drive module 480 is preferably a cylinder or a servo electric cylinder, and its piston rod or push rod forms the drive rod 481. The ends of both the measuring rod 471 and the drive rod 481 are configured with spherical or roller contacts, respectively abutting against specific positions on the lever arm 460 located on both sides of the rotation center of the torsion block 450. Preferably, the distance L from the contact point of the measuring rod 471 to the rotation center is equal to the distance L from the contact point of the drive rod 481.

[0061] In a key technical solution, refer to Figure 9The ratio L / R, which is the distance L to the maximum inner diameter R of the second tooth groove 451, is set between 3 and 10, achieving precise lever amplification of the torsion angle. The larger this ratio, the higher the system's sensitivity to detecting minute angle changes, thus achieving extremely high torsion angle detection accuracy while using conventional precision drives and measuring elements.

[0062] In terms of equipment layout, the second fixing block 420 is mounted on a fixed mounting bracket 490 and is driven to rise and fall by an upper cylinder 491. The second fixing block 420 has a passage groove 421 in the middle to allow the conveyor belt 210 to pass through. The first fixing block 410 is fixed on the mounting base 440 or the torsion mounting bracket 430, and is vertically opposite to the second fixing block 420.

[0063] After the torsional performance test, the equipment is equipped with a visual inspection station, which contains a torsional anomaly detection mechanism 500. For example... Figure 10 As shown, the torsion anomaly detection mechanism 500 includes a first vision detection module 510 and a second vision detection module 520. The first vision detection module 510 is installed directly above the conveyor belt 210 and is used to take vertical downward images to obtain a complete top-view profile image of the torsion bar 700. The straightness and overall bending deformation are analyzed using image processing algorithms. The second vision detection module 520 is installed on the side of the conveyor belt 210, aligned with the area of ​​the torsion bar 700 near the second tooth 721, and is used to obtain a side view image to detect defects such as end impacts, tooth damage, surface cracks, or local buckling.

[0064] like Figure 10 As shown, the material sorting mechanism 600 is located at the end of the conveyor belt 210 and includes a first discharge channel 610 located directly below the conveyor belt 210 for receiving torque bars 700 that have been determined to be qualified. A second discharge channel 620 is provided on one side of the conveyor belt 210 for collecting defective products. On the other side opposite to the second discharge channel 620, a pusher cylinder 630 is installed. When the control system determines that a torque bar 700 is unqualified, the pusher cylinder 630 actuates when it reaches the sorting position, pushing it away from the conveyor belt 210 and causing it to fall into the second discharge channel 620.

[0065] Based on the above structure, the entire automated detection process is as follows:

[0066] 1. Loading and Alignment: The torsion bar 700 is conveyed to the positioning groove 211 of the conveyor belt 210 through an external conveying system, and moves intermittently with the conveyor belt 210. It first reaches the alignment station, where the alignment toothed plate 310 completes the circumferential alignment.

[0067] 2. Synchronous Clamping and Positioning: The calibrated torsion bar 700 is delivered to the testing station. The control system activates the torsion bar testing mechanism 400, and the lifting drive module 431 drives the mounting base 440 to move downwards as a whole. The upper cylinder 491 synchronously drives the second fixing block 420 to rise. During the closing action of moving downwards and upwards, the half-tooth groove 411 of the first fixing block 410 and the half-tooth groove 411 of the second fixing block 420 clamp and engage the first tooth 711 of the torsion bar 700. At the same time, the second tooth groove 451 on the torsion block 450 engages the second tooth 721 of the torsion bar 700 from the side radially. This process is completed in one step, achieving accurate positioning and fixing of both ends simultaneously.

[0068] 3. Torsion Test and Data Acquisition: After clamping, the drive rod 481 of the drive module 480 extends and presses down one end of the lever arm 460. The lever arm 460 rotates around its rotation center, and its other end pushes up the measuring rod 471 of the detection module 470. The rotation of the lever arm 460 drives the torsion block 450 and the second tooth 721 held by it to rotate, thereby applying a precise torsional torque to the torsion bar 700. Since the first tooth 711 is firmly constrained by the complete tooth groove, the torsion bar 700 produces a purely elastic torsion. The displacement of the drive rod 481 is controllable, and the displacement of the measuring rod 471 corresponding to the applied torsion angle is recorded in real time by the displacement sensor. According to the lever principle, the precise torsion angle can be calculated, and then the torsional stiffness can be evaluated to determine whether it is qualified.

[0069] 4. Reset and Release: After the test is completed, the drive rod 481 retracts. The reset torsion spring installed between the torsion block 450 and the mounting base 440 automatically pulls the torsion block 450 back to its initial zero position, and the measuring rod 471 also returns to its preset compressed state under the action of its internal spring. Subsequently, the lifting drive module 431 drives the mounting base 440 to rise, the upper cylinder 491 drives the second fixed block 420 to fall, the torsion rod 700 is released, and it is sent to the next station by the conveyor belt 210.

[0070] 5. Visual Inspection: The released torsion bar 700 enters the visual inspection station. The first visual inspection module 510 and the second visual inspection module 520 capture top-view and side-view images, respectively. The images are transmitted to the industrial control computer for analysis to determine whether there are any bending, deformation, or surface defects.

[0071] 6. Intelligent Sorting: The industrial control computer combines torsion angle data and visual analysis results to make a final judgment on whether the torsion bar 700 is qualified or not. Qualified products continue to move forward with the conveyor belt 210 and eventually fall into the first discharge channel 610 from the end. When unqualified products reach the sorting position, the pusher cylinder 630 is activated, pushing them laterally into the second discharge channel 620, completing the automatic sorting.

[0072] The solution described in this embodiment achieves high-precision indirect measurement of torsion angle through a lever amplification mechanism; and by highly integrating the core tooling with conveying, alignment, vision, and sorting modules, a fully automatic, high-efficiency, and high-reliability torsion bar 700 integrated inspection system is constructed, which greatly improves the automation level and inspection accuracy of quality control on the production line.

[0073] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. A torsion bar testing fixture for detecting the torsion angle of a torsion bar (700), wherein the torsion bar (700) has a first tooth (711) at the end to be fixed (710) and a second tooth (721) at the end to be torsion (720), characterized in that, include: A fixing assembly for fixing the end (710) to be fixed of the torsion bar (700) includes a first fixing block (410) and a second fixing block (420). The first fixing block (410) and the second fixing block (420) are respectively provided with semi-circular semi-tooth grooves (411). The two sets of semi-tooth grooves (411) are closed to form a complete first tooth groove. The first tooth groove meshes with the first tooth (711) to restrict the rotation and tilting of the torsion bar (700). A torsion detection assembly for clamping and torsionping the end (720) to be torsion of the torsion bar (700) includes a mounting base (440) on which a torsion block (450) is rotatably mounted. The torsion block (450) is provided with a second tooth groove (451) that is adapted to the shape of the second tooth (721). The second tooth groove (451) is open in a direction perpendicular to the axis of the torsion bar (700) so that the second tooth (721) can be radially inserted. The torsion block (450) is fixed with a lever arm (460) extending radially, the lever arm (460) being fulcrum at the rotation center of the torsion block (450); the mounting base (440) is equipped with a detection module (470) and a drive module (480), the detection module (470) including a retractable measuring rod (471), the drive module (480) including a drive rod (481), the measuring rod (471) and the drive rod (481) respectively abutting against the two ends of the lever arm (460); The first fixing block (410) is mounted on the mounting base (440), so that during testing, by driving the mounting base (440) to move down, the clamping of the end to be fixed (710) of the torsion bar (700) and the insertion of the end to be twisted (720) can be completed simultaneously. The torsion block (450) is connected to the mounting base (440) through a reset elastic member. The reset elastic member is used to reset the torsion block (450) to the initial angle position that puts the measuring rod (471) in the initial compression state when not in testing state.

2. The torsion bar testing fixture according to claim 1, characterized in that, The distance L from the contact point of the measuring rod (471) and the contact point of the driving rod (481) to the rotation center is equal, and the ratio of this distance L to the maximum inner diameter R of the second tooth groove (451) satisfies 3 < L / R < 10.

3. An automated testing device, characterized in that, Includes a base (100), on which a conveyor frame (200) is mounted, and on which a conveyor belt (210) is mounted, wherein the conveyor belt (210) has equidistantly distributed positioning grooves (211) for accommodating torsion bars (700) along the conveying direction; and arranged sequentially along the conveying direction of the conveyor belt (210): The aligning mechanism (300) is used to adjust the circumferential attitude of the torsion bar (700); Torque bar detection mechanism (400), including the torsion bar detection fixture as described in any one of claims 1-2, for detecting the torsion angle of the torsion bar (700); Torsion anomaly detection mechanism (500) is used to perform appearance and deformation detection on torsion bar (700) after torsion angle detection is completed; The material sorting mechanism (600) is used to sort and discharge the torsion bar (700) according to the detection results.

4. An automated testing device according to claim 3, characterized in that, The alignment mechanism (300) includes an alignment tooth plate (310) located above the conveyor belt (210), and the surface of the alignment tooth plate (310) facing the conveyor belt (210) is provided with an alignment tooth groove (311) that meshes with the first tooth (711).

5. An automated testing device according to claim 3, characterized in that, The torsion bar detection mechanism (400) also includes a torsion mounting bracket (430) and a fixed mounting bracket (490). The torsion mounting bracket (430) is equipped with a lifting drive module (431), and the mounting base (440) is connected to the lifting drive module (431). The fixed mounting bracket (490) is equipped with an upper cylinder (491), and the second fixing block (420) is connected to the output end of the upper cylinder (491). The second fixing block (420) is provided with a passage groove (421) for the conveyor belt (210) to pass through.

6. An automated testing device according to claim 3, characterized in that, The torsion anomaly detection mechanism (500) includes a first visual detection module (510) and a second visual detection module (520). The first visual inspection module (510) is located directly above the conveyor belt (210) and is used to acquire a top-view profile image of the torsion bar (700) to detect its straightness and overall bending deformation. The second vision inspection module (520) is located on the side of the conveyor belt (210) near the second tooth (721) and is used to acquire a side view image of the torsion bar (700) to detect end and side defects.

7. An automated testing device according to claim 3, characterized in that, The material sorting mechanism (600) includes: The first discharge channel (610) is located at the end of the conveyor belt (210) and is used to receive qualified torsion bars (700). The second discharge channel (620) is located on one side of the conveyor belt (210) and is used to receive defective torsion bars (700). A pusher cylinder (630) is located on the other side of the conveyor belt (210) opposite to the second discharge channel (620) and is used to push the defective torsion bar (700) laterally to the second discharge channel (620).

Images