High-precision detection device and method for lifting ring assembly

Abstract

This invention provides a high-precision testing device and method for lifting ring assemblies, relating to the field of lifting ring assembly testing technology. It includes: a movable base, a positioning mechanism group, and a testing mechanism group; the positioning mechanism group and the testing mechanism group are fixed to the movable base; the positioning mechanism group includes a V-block axis positioning mechanism and a lifting ring anti-rotation positioning mechanism; the testing mechanism group includes a tube end deviation testing mechanism, a lifting ring upper and lower symmetry testing mechanism, a spring disc deviation testing mechanism, a workpiece in-situ testing mechanism, and a lifting ring left and right symmetry testing mechanism; the lifting ring anti-rotation positioning mechanism and the lifting ring upper and lower symmetry testing mechanism are integrated. This invention solves the technical problems of reference errors caused by discrete positioning, low efficiency of multi-station step-by-step testing, easy wear and interference from direct contact between sensors and workpieces, and difficulty in adapting fixed structures to multiple models of lifting ring assemblies. It achieves the technical effect of simultaneously realizing high-precision workpiece constraint and multi-dimensional measurement in a single clamping, and rapid type change adaptability to multiple models of lifting ring assemblies.

Description

Technical Field

[0001] This invention relates to the technical field of lifting ring assembly testing, specifically to a high-precision testing device and method for lifting ring assemblies. Background Technology

[0002] As a critical connecting component in various mechanical equipment, the dimensional accuracy of lifting ring assemblies directly affects the assembly quality, operational stability, and safety of the equipment. Therefore, the inspection of its key dimensions during the production process is crucial. Currently, the production inspection of lifting ring assemblies mainly employs manual inspection or multi-station step-by-step inspection methods, using simple measuring tools. This approach results in long inspection times for single pieces and relatively low measurement accuracy. Multi-station step-by-step inspection, on the other hand, distributes the inspection of different dimensions across multiple stations, constraining the workpiece through discrete positioning before measurement.

[0003] However, existing inspection methods have several problems: First, discrete positioning leads to reference errors, making it difficult to achieve synchronous high-precision constraints on the workpiece in three dimensions: axis alignment, end face clamping, and circumferential anti-rotation, affecting the consistency and accuracy of the measurement reference. Second, multi-station step-by-step inspection makes the inspection process cumbersome and inefficient, failing to meet the inspection needs of mass production. Third, in some inspection processes, the sensor is in direct contact with the workpiece, easily causing sensor wear and measurement interference, further reducing measurement accuracy. Furthermore, existing inspection devices are mostly fixed structures, making it difficult to quickly change key positioning modules and adapt to the inspection needs of various lifting ring assemblies, resulting in poor flexibility and versatility. Summary of the Invention

[0004] The purpose of this application is to provide a high-precision detection device and method for lifting ring assemblies, which solves the technical problems in the prior art, such as reference error caused by discrete positioning, low efficiency of multi-station step-by-step detection, easy wear and interference of sensors in direct contact with workpieces, and difficulty in adapting fixed structures to the detection of multiple models of lifting ring assemblies.

[0005] In view of the above problems, this application provides a high-precision detection device and method for lifting ring assemblies.

[0006] In a first aspect, this application provides a high-precision testing device for a lifting ring assembly, comprising: a movable base, a positioning mechanism group, and a testing mechanism group; the positioning mechanism group is fixed to the movable base and positions the lifting ring assembly; the testing mechanism group is fixed to the movable base and performs multi-dimensional deviation testing on the positioned lifting ring assembly; wherein, the positioning mechanism group includes a V-block axis positioning mechanism and a lifting ring anti-rotation positioning mechanism; the testing mechanism group includes a round tube end deviation testing mechanism, a lifting ring upper and lower symmetry testing mechanism, a spring disc deviation testing mechanism, a workpiece in-situ testing mechanism, and a lifting ring left and right symmetry testing mechanism; the lifting ring anti-rotation positioning mechanism and the lifting ring upper and lower symmetry testing mechanism are integrated into a combined mechanism, which performs anti-rotation positioning of the workpiece ring while simultaneously testing the upper and lower symmetry of the lifting ring.

[0007] Preferably, the tube end deviation detection mechanism includes: a base connecting plate fixed to the movable base; a detection cylinder fixed to the base connecting plate; a slider slidingly engaged with the cylinder; a disc stop fixed to the slider for contacting the end of the workpiece tube under the drive of the detection cylinder; and a disc displacement sensor fixed to the side of the detection device, wherein the sensing magnetic block of the disc displacement sensor is connected to the disc stop through the disc stop connecting block for detecting the displacement of the disc stop.

[0008] Preferably, the V-block axis positioning mechanism includes: a rib plate fixed to a movable base; a gear mechanism fixed to the rib plate, the gear mechanism including two meshing gears on each side, a rack, a toothed block, and a toothed side cover, the two meshing gears being arranged horizontally, wherein the axis height of one gear is higher than the axis height of the other gear, and the meshing areas of the two gears are in the same vertical plane; a lifting cylinder vertically arranged below the gear mechanism and fixedly connected to the gear mechanism; a connecting block fixed to the top of the gear mechanism; and a V-block fixedly connected to the gear mechanism via the connecting block, wherein the V-block has an extended positioning sub-V-block.

[0009] Preferably, the rack is fixedly connected to the piston rod of the lifting cylinder and meshes with the gear with the lower axis height; the top of the toothed block is fixed to the connecting block, and the bottom meshes with the gear with the higher axis height between the two gears; the toothed side cover is fitted over the lifting cylinder and fastened to form a closed space, accommodating the entire gear mechanism within the closed space, and the toothed block meshes with the toothed rail on the upper inner side of the toothed side cover, and can slide along the extension direction of the toothed rail.

[0010] Preferably, the combined mechanism includes: a mounting base fixed to the movable base; a horizontal floating mechanism disposed on the mounting base for providing adaptive floating in the horizontal direction; a vertical floating mechanism disposed above the horizontal floating mechanism for providing adaptive floating in the vertical direction; a conical positioning gripper buoyantly mounted via the vertical floating mechanism for inserting into and positioning the ring portion of the workpiece; a gripper drive cylinder for driving the conical positioning gripper to perform clamping or releasing actions; and a first displacement sensor, vertically disposed, whose measuring head is linked to the conical positioning gripper or the vertical floating mechanism for detecting the vertical positional deviation of the lifting ring while the conical positioning gripper positions the ring portion.

[0011] Preferably, the horizontal floating mechanism includes: a horizontal guide rail fixed to the mounting base; a horizontal slider slidably engaged with the horizontal guide rail; a horizontal guide rod connected to the horizontal slider to provide guidance for floating; and the vertical floating mechanism is fixed to the horizontal slider via an L-shaped connecting plate. Preferably, the vertical floating mechanism includes: a vertical guide rail fixed to the side of a vertical plate; a vertical slider slidingly engaged with the vertical guide rail; a cylinder connecting plate fixed to the vertical slider and connected to the gripper driving cylinder; wherein, the first displacement sensor is fixed to the vertical plate, and its sensing end is connected to the cylinder connecting plate or the moving part of the conical positioning gripper through a connector.

[0012] Preferably, the spring disc deviation detection mechanism includes: a spring disc lifting cylinder, vertically arranged; a guide rod connecting plate, fixedly connected to the piston rod of the spring disc lifting cylinder; a sensor connecting plate, fixedly connected to the guide rod connecting plate; multiple horizontally distributed laser receiving blocks, each laser receiving block being slidably mounted on the guide rod connecting plate via a guide rod, and an elastic element sleeved on the guide rod for providing a restoring force; multiple contacts, each contact having one end connected to a corresponding laser receiving block, and the other end used to contact the test point of the workpiece spring disc under the drive of the spring disc lifting cylinder; multiple laser sensors, horizontally fixed on the sensor connecting plate, with each laser sensor corresponding to one laser receiving block, used for non-contact measurement of the displacement of the laser receiving block to detect the flatness or positional deviation of the spring disc; and further includes: a horizontal moving cylinder, connected to the cylinder body of the spring disc lifting cylinder, used to drive the spring disc lifting cylinder and the entire mechanism to move in the horizontal direction to adjust the detection position.

[0013] Preferably, the lifting ring left-right symmetry detection mechanism includes: a base plate fixed to the movable base; a guide rail mechanism disposed on the base plate; a movable plate fixedly connected to the sliding component of the guide rail mechanism; a left-right symmetry detection cylinder fixedly connected to the movable plate via a left-right symmetry cylinder connecting plate; an L-shaped fixing block connected to the drive end of the left-right symmetry detection cylinder via a left-right symmetry L-shaped connecting plate; an extension rod, one end of which is fixed to the L-shaped fixing block; and a second displacement sensor fixed to the L-shaped fixing block, the detection head of which is coaxially arranged with the extension rod, for contacting the side of the lifting ring under the drive of the left-right symmetry detection cylinder, and detecting the left-right symmetry by displacement.

[0014] Preferably, the workpiece in-place detection mechanism includes: a fixed plate fixed to the movable base; a sensor mounting plate fixed to the fixed plate; and a proximity sensor or photoelectric sensor mounted on the sensor mounting plate for detecting whether the workpiece has been placed in place.

[0015] Secondly, this application provides a high-precision detection method for lifting ring assemblies, including: The lifting ring assembly is placed on the positioning mechanism assembly. The V-block axis positioning mechanism positions the workpiece tube along the axis, while the lifting ring anti-rotation positioning mechanism positions the workpiece ring to prevent rotation, so that the workpiece is in a uniquely determined detection reference position. While performing anti-rotation positioning, the upper and lower symmetry of the workpiece lifting ring is detected by the integrated lifting ring upper and lower symmetry detection mechanism to obtain the first detection data; Under a uniquely determined detection reference position, the axial deviation of the end of the workpiece tube is detected by the tube end deviation detection mechanism to obtain the second detection data; the flatness or positional deviation of the workpiece spring plate is detected by the spring plate deviation detection mechanism to obtain the third detection data; the left and right symmetry of the workpiece lifting ring is detected by the lifting ring left and right symmetry detection mechanism to obtain the fourth detection data; and the workpiece in-place detection mechanism confirms whether the workpiece is placed in place and obtains the in-place signal. Based on the first, second, third, and fourth detection data, a comprehensive judgment is made on whether the workpiece is qualified, and the detection result is output. Among them, the adaptive centering capability of the V-block axis positioning mechanism and the adjustable settings of each detection mechanism on the movable base enable rapid adaptation to different models of lifting ring components.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages: This application uses a positioning mechanism group to position the lifting ring assembly; a detection mechanism group performs multi-dimensional deviation detection on the positioned lifting ring assembly; wherein, the positioning mechanism group includes a V-block axis positioning mechanism and a lifting ring anti-rotation positioning mechanism. The V-block axis positioning mechanism uses its V-groove to adapt to different pipe diameters to achieve axis centering of the workpiece tube; the lifting ring anti-rotation positioning mechanism provides angular constraint on the workpiece ring, thereby establishing a unique and high-precision detection benchmark in a single clamping, fundamentally eliminating the benchmark inconsistency error caused by multiple clampings or station transfers in traditional discrete positioning; the detection mechanism group includes a round pipe end deviation detection mechanism, a lifting ring upper and lower symmetry detection mechanism, a spring plate deviation detection mechanism, and a workpiece in-situ detection machine. The system includes a lifting ring left-right symmetry detection mechanism, all fixed on a single movable base. This allows for sequential or parallel measurement of multiple dimensional deviations after workpiece positioning without secondary clamping, avoiding the inefficiency of multi-station step-by-step inspection. Furthermore, the lifting ring anti-rotation positioning mechanism is integrated with the lifting ring upper-lower symmetry detection mechanism into a combined mechanism. This mechanism simultaneously anti-rotation positioning of the workpiece ring and detection of the upper-lower symmetry of the lifting ring further compresses the inspection cycle, significantly improving inspection efficiency. This achieves high-precision workpiece constraint and multi-dimensional measurement simultaneously in a single clamping, improving inspection efficiency and accuracy, and enabling rapid adaptation to multiple lifting ring assembly models. This solves the technical problems of existing technologies, such as discrete positioning leading to reference errors, low efficiency of multi-station step-by-step inspection, easy wear and interference from direct contact between sensors and workpieces, and difficulty in adapting fixed structures to multiple lifting ring assembly models.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a high-precision detection device for a lifting ring assembly provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the tube end deviation detection mechanism in the embodiments of this application; Figure 3 This is a schematic diagram of the V-block axis positioning mechanism in the embodiments of this application; Figure 4 This is a schematic diagram of the combined mechanism in the embodiments of this application; Figure 5 This is a schematic diagram of the spring disc deviation detection mechanism in the embodiments of this application; Figure 6 This is a schematic diagram of the workpiece in-situ detection mechanism in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the left-right symmetry detection mechanism of the lifting ring in the embodiments of this application.

[0019] Explanation of reference numerals in the attached drawings: 10-Modible base, 20-Circular tube end deviation detection mechanism, 21-Base connecting plate, 22-Disc displacement sensor, 23-Detection cylinder, 24-Slider, 25-Disc stop, 26-Disc stop connecting block, 30-V-block axis positioning mechanism, 31-Rib plate, 32-Gear mechanism, 321-Gear, 322-Rack, 323-Toothed block, 324-Toothed side cover, 33-Lifting cylinder, 34-... 35-Connecting block, 40-V-block, 41-Combination mechanism, 42-Mounting base, 42-Horizontal floating mechanism, 421-Horizontal guide rail, 422-Horizontal slider, 423-Horizontal guide rod, 43-L-shaped connecting plate, 44-Straight connecting plate, 45-Vertical floating mechanism, 451-Vertical guide rod, 452-Vertical guide rail, 453-Vertical slider, 454-Cylinder connecting plate, 455-First displacement sensor, 46-C-shaped connecting plate 47-Gripper connecting block, 48-Conical positioning gripper, 49-Gripper drive cylinder, 50-Spring disc deviation detection mechanism, 51-Spring disc lifting cylinder, 52-Guide rod connecting plate, 53-Sensor connecting plate, 54-Guide rod, 55-Spring, 56-Laser receiving block, 57-Contact, 58-Laser sensor, 59-Horizontal moving cylinder, 60-Workpiece in-situ detection mechanism, 61-Fixed plate, 62-Sensor mounting plate, 63-Sensor protective shell, 64-Proximity sensor or photoelectric sensor, 70-Lifting ring left and right symmetry detection mechanism, 71-Guide rail mechanism, 711-Base plate, 712-Guide rail, 713-Sliding component, 714-Pin control connecting block, 715-Plugging pin, 72-Left and right symmetry cylinder connecting plate, 73-Left and right symmetry detection cylinder, 74-Left and right symmetry L-shaped connecting plate, 75-L-shaped fixed block, 76-Extension rod, 77-Second displacement sensor. Detailed Implementation

[0020] This application provides a high-precision detection device and method for lifting ring assemblies, which solves the technical problems in the prior art, such as reference error caused by discrete positioning, low efficiency of multi-station step-by-step detection, easy wear and interference of sensors in direct contact with workpieces, and difficulty in adapting fixed structures to the detection of multiple models of lifting ring assemblies.

[0021] To address the aforementioned technical problems, the overall approach of the technical solution provided in this application is as follows: The lifting ring assembly is positioned using a positioning mechanism group; a detection mechanism group performs multi-dimensional deviation detection on the positioned lifting ring assembly. The positioning mechanism group includes a V-block axis positioning mechanism and a lifting ring anti-rotation positioning mechanism. The detection mechanism group includes a tube end deviation detection mechanism, a lifting ring vertical symmetry detection mechanism, a spring disc deviation detection mechanism, a workpiece in-situ detection mechanism, and a lifting ring horizontal symmetry detection mechanism. The lifting ring anti-rotation positioning mechanism and the lifting ring vertical symmetry detection mechanism are integrated into a combined mechanism, simultaneously preventing rotation positioning of the workpiece ring and detecting the vertical symmetry of the lifting ring. This achieves the technical effect of simultaneously realizing high-precision workpiece constraint and multi-dimensional measurement in a single clamping, improving detection efficiency and accuracy, and enabling rapid changeover to adapt to multiple models of lifting ring assemblies.

[0022] After introducing the basic concepts and principles of this application, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. It should also be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all of them.

[0023] Example 1: This embodiment of the invention provides a high-precision detection device for lifting ring assemblies, such as... Figure 1 As shown, the device includes: a movable base 10, a positioning mechanism group, and a detection mechanism group.

[0024] The positioning mechanism is fixed to the movable base 10 to position the lifting ring assembly.

[0025] The detection mechanism group is fixed to the movable base 10 to perform multi-dimensional deviation detection on the positioned lifting ring assembly. The positioning mechanism group includes a V-block axis positioning mechanism 30 and a lifting ring anti-rotation positioning mechanism; the detection mechanism group includes a round tube end deviation detection mechanism 20, a lifting ring vertical symmetry detection mechanism, a spring disc deviation detection mechanism 50, a workpiece in-situ detection mechanism 60, and a lifting ring horizontal symmetry detection mechanism 70.

[0026] Specifically, a positioning mechanism group fixedly installed on the movable base 10 precisely fixes the lifting ring assembly, ensuring that it remains in a stable and unique reference position throughout all subsequent testing. The positioning mechanism group includes a V-block axis positioning mechanism 30 and a lifting ring anti-rotation positioning mechanism. The V-block axis positioning mechanism 30 uses a V-block structure to support the long tube portion of the workpiece and automatically centers the workpiece's axis to a preset reference line. The lifting ring anti-rotation positioning mechanism clamps the ring portion of the workpiece to prevent rotation. After the lifting ring assembly to be tested is fixed, a multi-dimensional high-precision index test is performed on the assembly using a testing mechanism group fixedly installed on the movable base 10. This includes a round tube end deviation testing mechanism 20, a lifting ring vertical symmetry testing mechanism, a spring disc deviation testing mechanism 50, a workpiece in-situ testing mechanism 60, and a lifting ring horizontal symmetry testing mechanism 70. The round tube end deviation testing mechanism 20 is typically located at the corresponding position at the end of the workpiece's round tube and is used to detect the axial or radial offset of the tube end. The spring disc deviation detection mechanism 50 is used to detect the flatness of the spring disc on the workpiece or its height deviation relative to the reference surface. The workpiece in-place detection mechanism 60 uses a proximity switch or photoelectric sensor to confirm whether the workpiece has been correctly placed on the positioning mechanism, preventing false detections. The lifting ring left-right symmetry detection mechanism 70 is used to detect the symmetry of the lifting ring from both sides, ensuring that the center of the lifting ring is aligned with the workpiece axis.

[0027] The anti-rotation positioning mechanism of the lifting ring and the upper and lower symmetry detection mechanism of the lifting ring are integrated into a combined mechanism 40, which performs anti-rotation positioning of the ring part of the workpiece and detects the upper and lower symmetry of the lifting ring at the same time.

[0028] Specifically, the anti-rotation positioning mechanism of the lifting ring and the upper and lower symmetry detection mechanism of the lifting ring are highly integrated to form a combined mechanism 40. When the anti-rotation positioning part of the lifting ring in the combined mechanism 40 is activated to clamp the ring of the workpiece to prevent it from rotating, the integrated upper and lower symmetry detection part of the lifting ring can detect the upper and lower symmetry of the lifting ring in real time and synchronously, so as to achieve a high degree of overlap between the positioning action and the detection action.

[0029] Therefore, this application utilizes a positioning mechanism group comprising a V-block axis positioning mechanism 30 and a lifting ring anti-rotation positioning mechanism. These two mechanisms work synergistically. The V-block axis positioning mechanism 30 uses its V-groove to adapt to different pipe diameters, achieving axis centering of the workpiece tube. The lifting ring anti-rotation positioning mechanism provides angular constraint on the workpiece ring, thus establishing a unique and high-precision detection benchmark in a single clamping operation. This fundamentally eliminates the benchmark inconsistency errors caused by multiple clamping operations or station transfers in traditional discrete positioning. After the lifting ring to be tested is fixed, the detection mechanism group, being mounted on the movable base 10, allows the lifting ring assembly to complete multiple dimensional deviation measurements sequentially or in parallel without secondary clamping after positioning, avoiding the inefficiency caused by multi-station step-by-step detection. Furthermore, the lifting ring anti-rotation positioning mechanism and the lifting ring upper and lower symmetry detection mechanism are integrated into a combined mechanism 40. While the lifting ring anti-rotation positioning action is in progress, the upper and lower symmetry of the lifting ring is detected in real time, combining positioning and detection into one, compressing the detection cycle and significantly improving detection efficiency. This solves the technical problems in existing technologies, such as reference errors caused by discrete positioning, low efficiency of multi-station step-by-step detection, easy wear and interference due to direct contact between sensors and workpieces, and difficulty in adapting fixed structures to the detection of multiple models of lifting ring components.

[0030] The tube end deviation detection mechanism 20 includes: a base connecting plate 21, a detection cylinder 23, a slider 24, a disc stop 25, and a disc displacement sensor 22.

[0031] A base connecting plate 21 is fixed to the movable base 10; a detection cylinder 23 is fixed to the base connecting plate 21; a slider 24 is slidably engaged with the detection cylinder 23; a disc stop 25 is fixed to the slider 24 and is used to contact the end of the workpiece tube under the drive of the detection cylinder 23; a disc displacement sensor 22 is fixed to the side of the detection device, wherein the sensing magnetic block of the disc displacement sensor 22 is connected to the disc stop 25 through the disc stop connecting block 26 and is used to detect the displacement of the disc stop 25.

[0032] like Figure 2As shown, the base connecting plate 21 is fixedly connected to the movable base 10; the disc displacement sensor 22 is mounted on the side of the cylinder 23; the detection cylinder 23 is fixed to the base connecting plate 21; the slider 24 is slidably engaged with the detection cylinder 23; the disc stop 25 is fixed to the slider 24; one end of the disc stop connecting block 26 is connected to the disc stop 25, and the other end is connected to the sensing magnetic block of the disc displacement sensor 22. Furthermore, the tube end deviation detection mechanism 20 adopts a highly integrated design of positioning and detection. Driven by the detection cylinder 23, the disc stop 25 moves back and forth with the slider 24, achieving both pressing and positioning of the tube end face, and synchronously moving the sensing magnetic block of the disc displacement sensor 22 through the disc stop connecting block 26, thereby measuring the total length deviation from the center point of the ring to the end of the product in real time. The disc displacement sensor 22 is preferably a magnetostrictive displacement sensor, with a measurement accuracy of ±0.01mm, ensuring high precision in total length deviation detection. The base connecting plate 21 is precision machined to ensure the flatness of the guide rail mounting surface and reduce the guiding error of the slider movement.

[0033] The V-block axis positioning mechanism 30 includes: rib plate 31, gear mechanism 32, lifting cylinder 33, connecting block 34, and V-block 35.

[0034] Rib 31 is fixed to movable base 10; gear mechanism 32 is fixed to rib 31, gear mechanism 32 includes two meshing gears 321 on each side, rack 322, toothed block 323 and toothed side cover 324, the two meshing gears are arranged horizontally, the axis height of one gear is higher than the axis height of the other gear, and the meshing area of ​​the two gears is in the same vertical plane; lifting cylinder 33 is vertically arranged below gear mechanism 32 and fixedly connected to gear mechanism 32; connecting block 34 is fixed to the top of gear mechanism 32; V-block 35 is fixedly connected to gear mechanism 32 through connecting block 34, and V-block 35 has extended positioning sub-V-block.

[0035] Furthermore, the rack 322 is fixedly connected to the piston rod of the lifting cylinder 33 and meshes with the gear with the lower axis height; the top of the toothed block 323 is fixed to the connecting block 34, and the bottom meshes with the gear with the higher axis height of the two gears; the toothed side cover 324 covers the top of the lifting cylinder 33 and is fastened to form a closed space, accommodating the entire gear mechanism within the closed space, and the toothed block meshes with the toothed rail on the upper inner side of the toothed side cover, and can slide along the extension direction of the toothed rail.

[0036] like Figure 3As shown, the rib plate 31 is vertically fixed to the movable base 10; the gear mechanism 32 is connected to the lifting cylinder 33; the lifting cylinder 33 is vertically connected to the gear mechanism 32; the connecting block 34 is fixed to the top of the gear mechanism 32; the V-block 35 is connected to the gear mechanism 32 through the connecting block 34. The gear mechanism 32 includes two meshing gears 321 on each side, a rack 322, a toothed block 323, and a toothed cover plate 324. The two meshing gears are arranged horizontally, with the axis height of one gear slightly higher than that of the other gear, and the meshing areas of the two gears are in the same vertical plane. The rack 322 is fixedly connected to the piston rod of the lifting cylinder 33 and meshes with the gear with a slightly lower axis height. The top of the toothed block 323 is fixed to the connecting block 34, and the bottom meshes with the gear with a slightly higher axis height among the two gears.

[0037] The V-block axis positioning mechanism 30 achieves synchronous clamping and releasing of the V-block 35 through a gear mechanism 32: when the lifting cylinder 33 is activated, the piston rod moves up and down, and the rack 322 fixed to the piston rod of the lifting cylinder 33 drives the gears on both sides with slightly lower axis height to rotate, thereby driving the toothed blocks 323 meshing with the two gears with slightly higher axis height to move synchronously in opposite directions. This controls the clamping and releasing of the V-block 35 and ensures that the clamping force of the left and right V-blocks 35 on the workpiece is symmetrical, avoiding deformation of the workpiece due to uneven force. In addition, the V-block 35 extends forward to form a set of V-shaped structures that adapt to the spring disc, which can simultaneously assist in positioning workpieces with welded spring discs, expanding the adaptability range of the mechanism.

[0038] The combined mechanism 40 includes: a mounting base 41, a horizontal floating mechanism 42, a vertical floating mechanism 45, a conical positioning gripper 48, a gripper drive cylinder 49, and a first displacement sensor 455.

[0039] Mounting base 41 is fixed to the movable base 10; horizontal floating mechanism 42 is disposed on mounting base 41 for providing horizontal floating adaptation; vertical floating mechanism 45 is disposed above horizontal floating mechanism 42 for providing vertical floating adaptation; conical positioning jaw 48 is buoyantly mounted via vertical floating mechanism 45 for inserting into and positioning the ring portion of the workpiece; jaw drive cylinder 49 is used to drive conical positioning jaw 48 to perform clamping or releasing actions; first displacement sensor 455 is vertically disposed, and its measuring head is linked with conical positioning jaw 48 or vertical floating mechanism 45 for detecting the vertical position deviation of the lifting ring while the conical positioning jaw 48 positions the ring portion.

[0040] The horizontal floating mechanism 42 includes: a horizontal guide rail 421 fixed to the mounting base 41; a horizontal slider 422 slidably engaged with the horizontal guide rail 421; a horizontal guide rod 423 connected to the horizontal slider 422 to provide guidance for floating; and a vertical floating mechanism 45 fixed to the horizontal slider 422 via an L-shaped connecting plate 43.

[0041] The vertical floating mechanism 45 includes: a vertical guide rail 452 fixed to the side of a vertical plate; a vertical slider 453 slidably engaged with the vertical guide rail 452; a cylinder connecting plate 454 fixed to the vertical slider 453 and connected to the gripper drive cylinder 49; wherein, the first displacement sensor 455 is fixed to the vertical plate, and its sensing end is connected to the cylinder connecting plate 454 or the moving part of the conical positioning gripper 48 through a connector.

[0042] like Figure 4 As shown, the combined mechanism 40 integrating the anti-rotation positioning and upper and lower symmetry detection mechanism of the lifting ring includes a mounting base 41 fixed to the movable base; a horizontal floating mechanism 42 fixed to the base 41; an L-shaped connecting plate 43 fixed above the horizontal floating mechanism 42; a straight connecting plate 44 connected to the top of the L-shaped connecting plate 43; a vertical floating mechanism 45 connected to the straight connecting plate 44; a C-shaped connecting plate 46 connected to the straight connecting plate 44 via two vertical guide rods 451; a gripper connecting block 47 connected to the C-shaped connecting plate 46 via a horizontal guide rod 423; a conical positioning gripper 48 fixed to the gripper connecting block 47; and a gripper drive cylinder 49 connected to the C-shaped connecting plate 46 and the gripper connecting block 47.

[0043] Furthermore, the vertical floating mechanism 45 includes a vertical guide rod 451, a vertical guide rail 452, a vertical slider 453, a cylinder connecting plate 454, and a vertically placed first displacement sensor 455. The vertical guide rail 452 is fixed on the L-shaped connecting plate 43, the vertical slider 453 can slide on the vertical guide rail 452, the cylinder connecting plate 454 is fixed to the other side of the vertical slider 453, and the vertically placed first displacement sensor 455 is fixed to the side of the L-shaped connecting plate 43.

[0044] The horizontal floating mechanism 42 includes a horizontal guide rail 421, a horizontal slider 422, and a horizontal guide rod 423. The horizontal guide rail 421 is fixed to the mounting base 41, and the horizontal slider 422 slides on the horizontal guide rail 421.

[0045] The combined mechanism 40 adopts an integrated positioning and detection structure design. The conical positioning gripper 48, driven by the gripper drive cylinder 49, can achieve circumferential anti-rotation positioning of the workpiece. Simultaneously, through the coordinated action of the vertical floating mechanism 45 and the horizontal floating mechanism 42, positioning and detection errors caused by factors such as radial sway of the workpiece and fluctuations in cylinder output force can be compensated. The vertically placed first displacement sensor 455 detects the vertical displacement of the gripper connecting block 47 in real time, directly outputting the vertical symmetry deviation of the lifting ring, eliminating the need for additional detection steps and reducing the single-piece detection time to less than 14 seconds.

[0046] The spring disc deviation detection mechanism 50 includes: Spring disc lifting cylinder 51, vertically installed; The guide rod connecting plate 52 is fixedly connected to the piston rod of the spring disc lifting cylinder 51; The sensor connecting plate 53 is fixedly connected to the guide rod connecting plate 52; Multiple horizontally distributed laser receiving blocks 56, each of which is slidably mounted on the guide rod connecting plate 52 via a guide rod 54, and an elastic element is sleeved on the guide rod 54 to provide a restoring force; Multiple contacts 57, one end of each contact 57 is connected to a corresponding laser receiving block 56, and the other end is used to contact the test point of the workpiece spring disk under the drive of the spring disk lifting cylinder 51. Multiple laser sensors 58 are horizontally fixed on the sensor connection plate 53, and each laser sensor 58 corresponds to a laser receiving block 56 for non-contact measurement of the displacement of the laser receiving block 56 to detect the flatness or positional deviation of the spring plate. It also includes: a horizontal moving cylinder 59, which is connected to the cylinder body of the spring disc lifting cylinder 51, for driving the spring disc lifting cylinder 51 and the entire mechanism to move in the horizontal direction to adjust the detection position.

[0047] like Figure 5As shown, the spring disc deviation detection mechanism includes: a vertically placed spring disc lifting cylinder 51, which provides vertical driving force for the mechanism; a guide rod connecting plate 52 fixed to the vertically placed spring disc lifting cylinder 51; a sensor connecting plate 53 fixed at one end to the guide rod connecting plate 52; a guide rod 54 passing through the guide rod connecting plate 52; a spring 55 assembled on the guide rod 54; a laser receiving block 56 horizontally arranged and fixed to the end of the guide rod 54 away from the spring 55; a contact 57 with one end for contacting the spring disc and the other end connected to the laser receiving block 56; three sets of laser sensors 58 horizontally fixed at one end of the sensor connecting plate 53 and corresponding to the three horizontally distributed laser receiving blocks 56 respectively; and a horizontal moving cylinder 59 connected to the vertically placed spring disc lifting cylinder 51.

[0048] Furthermore, the spring disc deviation detection mechanism 50 employs a combination of three horizontally arranged laser sensors 58 and contacts 57. By measuring the positions of three points on the spring disc, the deviation from the center point of the ring to the spring disc is calculated, improving the comprehensiveness of the detection. During measurement, the two vertically arranged cylinders in the spring disc deviation detection mechanism 50 begin to work in tandem. The vertical spring disc lifting cylinder 51 first drives the mechanism to rise and avoid the workpiece placement area, and then the horizontal moving cylinder 59 pushes the mechanism to move horizontally so that the contacts 57 contact the spring disc. The buffering effect of the spring 55 prevents the contacts from squeezing and deforming the spring disc. When the laser receiving block 56 connected to the guide rod 54 is displaced, the laser beam emitted by the laser displacement sensor 58 is projected onto the detection surface of the laser receiving block 56. The displacement is detected by the change in the projection position of the laser beam on the detection surface.

[0049] The left-right symmetry detection mechanism 70 of the lifting ring includes: a base plate 711, a guide rail mechanism 71, a moving plate, a left-right symmetry detection cylinder 73, an L-shaped fixing block 75, an extension rod 76, and a second displacement sensor 77.

[0050] A base plate 711 is fixed to the movable base 10; a guide rail mechanism 71 is disposed on the base plate; a movable plate is fixedly connected to the sliding component of the guide rail mechanism 71; a left-right symmetrical detection cylinder 73 is fixedly connected to the movable plate through a left-right symmetrical cylinder connecting plate 72; an L-shaped fixing block 75 is connected to the driving end of the left-right symmetrical detection cylinder 73 through a left-right symmetrical L-shaped connecting plate 74; one end of an extension rod 76 is fixed to the L-shaped fixing block 75; a second displacement sensor 77 is fixed to the L-shaped fixing block 75, and its detection head is coaxially arranged with the extension rod 76, used to contact the side of the workpiece lifting ring under the drive of the left-right symmetrical detection cylinder 73, and detect the left-right symmetry by displacement.

[0051] Specifically, such as Figure 7As shown, the left-right symmetry detection mechanism 70 of the lifting ring includes: a guide rail mechanism 71 fixed to a movable base 10; a left-right symmetry cylinder connecting plate 72 whose bottom surface is fixed to the sliding component 713 of the guide rail mechanism 71, and whose side surface is fixed to the pin control connecting block 714 of the guide rail mechanism 71; a left-right symmetry detection cylinder 73 fixed to the guide rail mechanism 71 through the left-right symmetry cylinder connecting plate 72; a left-right symmetry L-shaped connecting plate 74 connected to the left-right symmetry detection cylinder 73; an L-shaped fixing block 75 connected to the left-right symmetry L-shaped connecting plate 74; an extension rod 76 whose tail end is fixed to the tail end of the L-shaped fixing block 75; and a second displacement sensor 77 coaxial with the extension rod 76 and fixed to the L-shaped fixing block 75.

[0052] Furthermore, the guide rail mechanism 71 includes a base plate 711, a guide rail 712, a sliding component 713, a pin-controlled connecting block 714, and a plug-in pin 715. The base plate 711 is fixed to the movable base; the guide rail 712 is fixed to the base plate 711; the sliding component 713 is slidably engaged with the guide rail 712; the pin-controlled connecting block 714 is connected to the base plate 711 via the plug-in pin 715; the plug-in pin 715 is used to connect the pin-controlled connecting block 714 to the base plate 711.

[0053] Furthermore, the two symmetrically distributed left-right symmetry detection cylinders 73 in the lifting ring symmetry detection mechanism 70 are activated and perform extension and retraction actions. When detecting the left-right symmetry of the lifting ring, the two symmetrically distributed left-right symmetry detection cylinders 73 are activated and perform extension and retraction actions simultaneously. Since the second displacement sensor 77 is fixedly connected to the left-right symmetry detection cylinders 73 through the left-right symmetry connecting plate 74 and the L-shaped fixing block 75, and its measuring rod is coaxially set with the piston rod of the left-right symmetry detection cylinder 73, synchronous linear motion can be achieved. Under the driving action of the left-right symmetry detection cylinders 73, the second displacement sensor 77 moves forward along the preset direction with the L-shaped fixing block 75. The sensor measuring rod first abuts against the reference contact surface of the L-shaped fixing block 75 to complete the initial zero-position calibration; then, it abuts against the side surface of the lifting ring through the extension rod 76 rigidly connected to the L-shaped fixing block 75. At this time, the displacement data collected by the second displacement sensor 77 is the actual displacement of the extension rod 76 from the initial position to the side of the lifting ring. By comparing the displacement parameters collected by the second displacement sensors 77 symmetrically distributed on both sides, the positional deviation between the central axis of the lifting ring and the axis of the workpiece tube in the left and right directions is accurately calculated. If the displacement data on both sides are equal or within the allowable tolerance range, the left and right symmetry of the lifting ring is deemed acceptable; otherwise, a deviation is deemed to exist.

[0054] This mechanism achieves direct and accurate quantification of the left-right symmetry of the lifting ring by coaxially mounting the displacement sensor with the extension rod and using cylinder-driven contact measurement. Simultaneously, the design of the guide rail mechanism 71 and its insertion / removal pin 715 allows the entire detection module to be adjusted and locked on the base plate 711, thus adapting to the lifting ring positions of different workpiece models and demonstrating the technical effectiveness of rapid model changeover and multi-model adaptation.

[0055] The workpiece in-situ detection mechanism 60 includes: a fixing plate 61, a sensor mounting plate 62, and a proximity sensor or photoelectric sensor 64.

[0056] The fixing plate 61 is fixed to the movable base 10; the sensor mounting plate 62 is vertically fixed to the fixing plate 61; the proximity sensor or photoelectric sensor 64 is mounted on the sensor mounting plate 62 to detect whether the workpiece has been placed in place.

[0057] Specifically, such as Figure 6 As shown, the fixing plate 61 is fixed to the movable base 10; the sensor mounting plate 62 is vertically fixed to the fixing plate 61; the sensor protective shell 63 is fixed to the top of the sensor mounting plate 62; and the proximity sensor or photoelectric sensor 64 is located below the sensor protective shell 63.

[0058] Furthermore, to improve the service life and reliability of the sensor under complex working conditions, the workpiece in-situ detection mechanism 60 may also include a sensor protective shell 63. The sensor protective shell 63 is fixed to the top of the sensor mounting plate 62 and covers the proximity sensor or photoelectric sensor 64, providing dust and impact protection. The proximity sensor or photoelectric sensor 64 is a model with adjustable detection distance and short response time, ensuring rapid determination of whether the workpiece is in place. The highly reliable proximity sensor or photoelectric sensor 64 is used to detect in real time whether a workpiece exists at the open position of the V-block axis positioning mechanism. Detecting a workpiece is one of the prerequisites for the normal start of subsequent positioning and detection processes, effectively avoiding empty operation without a workpiece and improving equipment safety.

[0059] Specifically, such as Figure 6As shown, the workpiece in-situ detection mechanism 60 is typically located near the open position of the V-block axis positioning mechanism 30, i.e., the area the workpiece must pass through when it is placed. When the operator or robotic arm places the lifting ring assembly on the positioning mechanism assembly, the workpiece enters the detection area of ​​the proximity sensor or photoelectric sensor 64. The sensor transmits detection signals in real time. Once the presence of the workpiece is detected, i.e., the distance between the sensor and the workpiece is less than a preset threshold, the sensor immediately outputs an in-situ signal. This signal is transmitted to the overall control system as one of the prerequisites for allowing the subsequent positioning and detection processes to begin. The control system has a preset logic judgment: only after receiving the workpiece in-situ signal from the workpiece in-situ detection mechanism 60 is the V-block axis positioning mechanism 30, the combination mechanism 40, the round tube end deviation detection mechanism 20, and other actuators allowed to start sequentially or in parallel. If no in-situ signal is received within a specified time, the control system determines that there is no workpiece or the workpiece placement is abnormal, and the equipment will remain in standby mode or issue an alarm.

[0060] Based on the above working principle, the workpiece in-situ detection mechanism 60 achieves the following technical effects: Avoiding dry running effectively prevents the equipment from starting accidentally when there is no workpiece, thus avoiding energy waste and mechanical wear caused by cylinder idling and sensor ineffective measurements.

[0061] Improve equipment safety, prevent malfunctions such as clamping without proper placement of workpieces, and protect the safety of both equipment and workpieces.

[0062] Ensuring process continuity, it acts as the starting lock for the automated inspection process, ensuring that all subsequent inspection actions are performed while the workpiece is in place, thus guaranteeing the logical rigor and reliability of the inspection process.

[0063] To improve detection efficiency, the fast-response sensor can instantly provide feedback on the workpiece status and will not become a bottleneck for the overall machine cycle time. Combined with the adjustable detection distance design, it can adapt to the different placement heights of different workpiece models, demonstrating rapid changeover capability.

[0064] Example 2: This embodiment of the invention provides a high-precision detection method for a lifting ring assembly, applied to a high-precision detection device for a lifting ring assembly in the embodiment. The method includes: Step 1: Place the lifting ring assembly on the positioning mechanism group, use the V-block axis positioning mechanism to position the workpiece tube axis, and use the lifting ring anti-rotation positioning mechanism to position the workpiece ring to prevent rotation, so that the workpiece is in a unique and determined detection reference position.

[0065] Specifically, step 1 is pre-positioning: the robot arm places the lifting ring assembly in the open position of the V-block axis positioning mechanism 30, at which point the workpiece is not yet fully clamped. The proximity sensor or photoelectric sensor 64 of the workpiece in-place detection mechanism 60 detects that the workpiece has been placed in place and outputs an in-place signal to the control system. After receiving the in-place signal, the control system triggers the combined mechanism 40 to operate. The gripper drive cylinder 49 of the combined mechanism 40 drives the conical positioning gripper 48 to clamp the lifting ring, achieving anti-rotation positioning of the workpiece ring and preventing circumferential displacement or rotation of the workpiece during subsequent inspection.

[0066] Step 2: Simultaneously with the anti-rotation positioning performed in Step 1, the upper and lower symmetry of the workpiece lifting ring is detected by the integrated lifting ring symmetry detection mechanism to obtain the first detection data.

[0067] Specifically, step 2 is axis positioning: the cylinder of the V-block axis positioning mechanism 30 actuates, driving the left and right V-blocks 35 to simultaneously clamp the workpiece via the gear mechanism 32, achieving workpiece axis alignment. During the process of the jaw drive cylinder 49 of the combined mechanism 40 driving the conical positioning jaw 48 to clamp the ring, the conical positioning jaw 48 is connected to the cylinder connecting plate 454 via the vertical floating mechanism 45, and the vertically placed first displacement sensor 455 is fixed to the side of the upright plate. Its sensing end is linked with the moving parts of the cylinder connecting plate 454 or the conical positioning jaw 48. Therefore, when the jaw clamps the ring, the vertical positional deviation of the workpiece lifting ring is transmitted to the first displacement sensor 455 through the displacement of the floating mechanism. The sensor collects this displacement in real time, i.e., the deviation data of the vertical symmetry of the lifting ring, as the first detection data. This process achieves integrated synchronous measurement of positioning and detection.

[0068] Step 3: Under the uniquely determined detection reference position, the axial deviation of the end of the workpiece tube is detected by the tube end deviation detection mechanism to obtain the second detection data; the flatness or position deviation of the workpiece spring plate is detected by the spring plate deviation detection mechanism to obtain the third detection data; the left and right symmetry of the workpiece lifting ring is detected by the lifting ring left and right symmetry detection mechanism to obtain the fourth detection data; and the workpiece in place detection mechanism confirms whether the workpiece is placed in place and obtains the in place signal.

[0069] Specifically, step 3 is multi-size synchronous detection. At the uniquely determined detection reference position, each detection mechanism sequentially performs the following detections: vertical symmetry (first detection data): The vertical symmetry detection mechanism of the lifting ring uses the conical positioning jaw 48 to prevent rotation and position while measuring the vertical symmetry deviation through the first displacement sensor 455 of the vertical floating mechanism 45 to obtain the first detection data; total length deviation (second detection data): The cylinder 23 of the round tube end deviation detection mechanism 20 pushes the disc stopper 25 against the end face of the round tube, and the displacement sensor 22 synchronously measures the total length deviation to obtain the second detection data; spring disc deviation (third detection data): The vertical cylinder and the horizontal moving cylinder 59 of the spring disc deviation detection mechanism 50 cooperate to make the contact head 57 contact the spring disc, and the laser sensor 58 measures the deviation through the displacement of the laser receiving block 56 to obtain the third detection data; left-right symmetry (fourth detection data): The cylinder of the left-right symmetry detection mechanism 70 of the lifting ring drives the extension rod 76 to contact the side of the lifting ring, and the second displacement sensor 77 measures the left-right symmetry deviation to obtain the fourth detection data.

[0070] Step 4: Based on the first detection data, the second detection data, the third detection data, and the fourth detection data, comprehensively judge whether the workpiece is qualified and output the detection result; Among them, through the self-adaptive centering ability of the V-block axis positioning mechanism and the adjustable settings of each detection mechanism on the movable base, it can quickly adapt to different models of lifting ring assemblies.

[0071] Specifically, the control system collects the above four detection data and compares them with the preset tolerance ranges respectively. If all the detection data are within the allowable tolerance ranges, the workpiece is judged to be qualified; if any one of the detection data exceeds the tolerance range, the workpiece is judged to be unqualified. The detection result can be output by means of display on the display screen, sound and light alarm, or communication with the production line management system, etc.

[0072] The entire detection process is completed at a single station and with a single clamping. The single-piece detection time is less than 14 seconds, which is more than four times more efficient than manual detection, and the measurement accuracy reaches 0.01 mm, meeting the full-automatic high-precision detection requirements of a large number of lifting ring assemblies.

[0073] When switching between different models of lifting ring assemblies, the V-block of the V-block axis positioning mechanism 30 can adapt to workpieces of different pipe diameters and accommodate different models of lifting ring assemblies. Additionally, the horizontal and vertical floating mechanisms built into the combination mechanism 40 can adapt to different ring positions. Each detection mechanism can be adjusted in position via guide rails on the movable base 10 and fixed using locking mechanisms such as plug-in pins to accommodate detection points on workpieces of different sizes. This achieves the technical effect of simultaneously realizing high-precision workpiece constraint and multi-dimensional measurement in a single clamping, improving detection efficiency and accuracy, and enabling rapid adaptation to multiple models of lifting ring assemblies. This solves the technical problems in existing technologies, such as discrete positioning leading to reference errors, low efficiency of multi-station step-by-step detection, easy wear and interference from direct contact between sensors and workpieces, and difficulty in adapting fixed structures to multiple models of lifting ring assemblies.

[0074] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely illustrative examples of this application and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A high-precision testing device for lifting ring assemblies, characterized in that, include: Movable base; The positioning mechanism assembly is fixed to the movable base to position the lifting ring assembly; The testing mechanism group, fixed to the movable base, performs multi-dimensional deviation testing on the positioned lifting ring assembly; The positioning mechanism group includes a V-block axis positioning mechanism and a lifting ring anti-rotation positioning mechanism; the detection mechanism group includes a round tube end deviation detection mechanism, a lifting ring upper and lower symmetry detection mechanism, a spring plate deviation detection mechanism, a workpiece in-situ detection mechanism, and a lifting ring left and right symmetry detection mechanism. The anti-rotation positioning mechanism of the lifting ring and the upper and lower symmetry detection mechanism of the lifting ring are integrated into a combined mechanism, which can perform anti-rotation positioning of the ring part of the workpiece and detect the upper and lower symmetry of the lifting ring at the same time.

2. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The tube end deviation detection mechanism includes: The base connecting plate is fixed to the movable base; The detection cylinder is fixed to the base connecting plate; The slider slides in conjunction with the detection cylinder. A disc stop, fixed to the slider, is used to contact the end of the workpiece tube under the drive of the detection cylinder; A disk displacement sensor is fixed to the side of the detection device. The sensing magnetic block of the disk displacement sensor is connected to the disk stop block through a disk stop block connecting block, and is used to detect the displacement of the disk stop block.

3. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The V-block axis positioning mechanism includes: Ribs, fixed to a movable base; The gear mechanism is fixed to the rib plate. The gear mechanism includes two meshing gears on the left and right sides, a rack, a toothed block, and a toothed side cover. The two meshing gears are arranged in a horizontal direction, with the axis height of one gear being higher than the axis height of the other gear, and the meshing areas of the two gears are in the same vertical plane. A lifting cylinder is vertically arranged below the gear mechanism and fixedly connected to the gear mechanism; The connecting block is fixed to the top of the gear mechanism; The V-block is fixedly connected to the gear mechanism via a connecting block, and the V-block has an extended positioning sub-V-block.

4. The high-precision detection device for the lifting ring assembly according to claim 3, characterized in that, The rack is fixedly connected to the piston rod of the lifting cylinder and meshes with a gear with a lower axis height. The top of the toothed block is fixed to the connecting block, and the bottom of the toothed block meshes with the gear whose central axis is higher than that of the two gears. The toothed side cover is fitted over the lifting cylinder and fastened together to form a closed space, which houses the entire gear mechanism. The toothed block meshes with the toothed rail on the upper inner side of the toothed side cover and can slide along the extension direction of the toothed rail.

5. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The combined mechanism includes: Mounting base, fixed to the movable base; A horizontal floating mechanism, mounted on the mounting base, is used to provide adaptive floating in the horizontal direction; A vertical floating mechanism is disposed above the horizontal floating mechanism to provide vertical floating adaptive behavior; The conical positioning gripper, which can be floated by the vertical floating mechanism, is used to insert into and position the ring portion of the workpiece; A gripper drive cylinder is used to drive the conical positioning gripper to perform clamping or releasing actions; The first displacement sensor is vertically arranged, and its measuring head is linked with the conical positioning gripper or the vertical floating mechanism to detect the position deviation of the lifting ring in the vertical direction while the conical positioning gripper is positioning the ring.

6. The high-precision detection device for the lifting ring assembly according to claim 5, characterized in that, The horizontal floating mechanism includes: A horizontal guide rail is fixed to the mounting base; The horizontal slider slides in conjunction with the horizontal guide rail. A horizontal guide rod, connected to the horizontal slider, provides guidance for the floating action; The vertical floating mechanism is fixed to the horizontal slider via an L-shaped connecting plate; The vertical floating mechanism includes: A vertical guide rail is fixed to the side of a vertical plate; The vertical slider slides in conjunction with the vertical guide rail; The cylinder connecting plate is fixed to the vertical slider and connected to the gripper drive cylinder; The first displacement sensor is fixed to the upright plate, and its sensing end is connected to the cylinder connecting plate or the moving part of the conical positioning gripper through a connector.

7. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The spring disc deviation detection mechanism includes: Spring disc lifting cylinder, vertically installed; The guide rod connecting plate is fixedly connected to the piston rod of the spring disc lifting cylinder; The sensor connection plate is fixedly connected to the guide rod connection plate; Multiple horizontally distributed laser receiving blocks, each of which is slidably mounted on a guide rod connecting plate via a guide rod, and an elastic element is sleeved on the guide rod to provide a restoring force; Multiple contacts, each contact having one end connected to a corresponding laser receiving block and the other end used to contact the test point of the workpiece spring disk under the drive of the spring disk lifting cylinder; Multiple laser sensors are horizontally fixed on the sensor connection plate, and each laser sensor corresponds to a laser receiving block for non-contact measurement of the displacement of the laser receiving block to detect the flatness or positional deviation of the spring disc. It also includes: a horizontal moving cylinder, connected to the cylinder body of the spring disc lifting cylinder, used to drive the spring disc lifting cylinder and the entire mechanism to move in the horizontal direction to adjust the detection position.

8. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The left-right symmetry detection mechanism for the lifting ring includes: The base plate is fixed to the movable base; The guide rail mechanism is mounted on the base plate; The movable plate is fixedly connected to the sliding component of the guide rail mechanism; The left and right symmetrical detection cylinders are fixedly connected to the moving plate via left and right symmetrical cylinder connecting plates; The L-shaped fixing block is connected to the drive end of the left and right symmetrical detection cylinders through the left and right symmetrical L-shaped connecting plates; The extension rod is fixed at one end to the L-shaped fixing block; The second displacement sensor is fixed to the L-shaped fixing block. Its detection head is coaxially arranged with the extension rod and is used to contact the side of the workpiece lifting ring under the drive of the left and right symmetrical detection cylinder to detect the left and right symmetry by displacement.

9. The high-precision detection device for the lifting ring assembly according to claim 1, characterized in that, The workpiece in-situ inspection mechanism includes: A fixing plate is fixed to the movable base; A sensor mounting plate is fixed to the fixing plate; A proximity sensor or photoelectric sensor is mounted on the sensor mounting plate to detect whether the workpiece has been placed in place.

10. A high-precision testing method for a lifting ring assembly, characterized in that, The high-precision detection device for the lifting ring assembly as described in any one of claims 1-9 includes: The lifting ring assembly is placed on the positioning mechanism assembly. The V-block axis positioning mechanism positions the workpiece tube along the axis, while the lifting ring anti-rotation positioning mechanism positions the workpiece ring to prevent rotation, so that the workpiece is in a uniquely determined detection reference position. While performing anti-rotation positioning, the upper and lower symmetry of the workpiece lifting ring is detected by the integrated lifting ring upper and lower symmetry detection mechanism to obtain the first detection data; Under a uniquely determined detection reference position, the axial deviation of the end of the workpiece tube is detected by the tube end deviation detection mechanism to obtain the second detection data; the flatness or positional deviation of the workpiece spring plate is detected by the spring plate deviation detection mechanism to obtain the third detection data; the left and right symmetry of the workpiece lifting ring is detected by the lifting ring left and right symmetry detection mechanism to obtain the fourth detection data; and the workpiece in-place detection mechanism confirms whether the workpiece is placed in place and obtains the in-place signal. Based on the first, second, third, and fourth detection data, a comprehensive judgment is made on whether the workpiece is qualified, and the detection result is output. Among them, the adaptive centering capability of the V-block axis positioning mechanism and the adjustable settings of each detection mechanism on the movable base enable rapid adaptation to different models of lifting ring components.

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