An online non-destructive testing device for diaphragm spring hardness

Abstract

This application provides an online non-destructive testing device for the hardness of diaphragm springs. The device includes a body, a probe, and a support mechanism. The body includes a top seat, a connecting seat, and a base connected in sequence. The probe is located on the side of the top seat facing the base; the support mechanism is located on the side of the base facing the top seat, and includes a lead screw, a fixed disk, a rotating disk, a positioning drive, and a limiting component. The lead screw passes through the base; the positioning drive is rotatably connected to the top of the base and threaded to the outer periphery of the lead screw; the fixed disk overlaps the positioning drive and is positioned above the lead screw; the rotating disk covers and is rotatably connected to the fixed disk to support the diaphragm spring; the limiting component is located within the lead screw and the fixed disk, with its first end passing downwards through the lead screw and its second end passing upwards through the fixed disk and engaging with the rotating disk. By eliminating the need to reposition the diaphragm spring during multiple tests after the initial placement on the rotating disk, scratches on the diaphragm spring surface are effectively prevented.

Description

Technical Field

[0001] This application relates to the field of clutch component testing technology, and in particular to an online non-destructive testing device for diaphragm spring hardness. Background Technology

[0002] Diaphragm springs are the core elastic components in automotive clutch systems, and their hardness characteristics directly affect the smoothness of clutch engagement, the thoroughness of clutch disengagement, and its service life. Hardness testing is a crucial step in the molding and manufacturing process of diaphragm springs to ensure product quality. Because diaphragm springs have a ring-radial structure, the hardness distribution at different radii significantly impacts the product's mechanical properties; therefore, hardness testing at multiple points is necessary during the molding process.

[0003] In existing diaphragm spring hardness testing processes, mechanical or semi-automatic hardness testers are typically used. During testing, the diaphragm spring is placed on a worktable, and the test point is aligned with the indenter of the hardness tester for pressure testing. Since diaphragm spring hardness testing usually requires multiple points along the circumference, moving to the next test point often necessitates manual handling and rotation of the diaphragm spring. This friction between the diaphragm spring and the worktable surface can easily cause scratches, affecting the product's appearance and subsequent performance. Summary of the Invention

[0004] This application provides an online non-destructive testing device for diaphragm spring hardness to solve the problem that when diaphragm springs are manually moved and rotated, they are prone to friction with the worktable surface, which can easily cause scratches on the surface of the diaphragm spring. By placing the diaphragm spring on the rotating disk for the first time and then conducting multiple tests, the diaphragm spring does not need to be repositioned, which effectively prevents scratches on the surface of the diaphragm spring and improves the appearance quality and subsequent performance of the product.

[0005] This application provides an online non-destructive testing device for diaphragm spring hardness, including a body, a probe, and a support mechanism. The body includes a top seat, a connecting seat, and a base connected in sequence, with at least a portion of the top seat facing the base in the vertical direction. The probe is movably disposed on the side of the top seat facing the base; the support mechanism is disposed on the side of the base facing the top seat, and includes a lead screw, a fixed disk, a rotating disk, a positioning drive, and a limiting member; the lead screw passes through the base to move in the vertical direction; the positioning drive is rotatably connected to the top of the base and threadedly connected to the outer periphery of the lead screw; the fixed disk overlaps the positioning drive to be positioned above the lead screw; the rotating disk covers and is rotatably connected to the fixed disk to support the diaphragm spring; the limiting member is located within the lead screw and the fixed disk, with the first end of the limiting member passing downward through the lead screw, and the second end of the limiting member passing upward through the fixed disk and engaging with the rotating disk.

[0006] In one possible design, the bottom center region of the rotating disk has a slot, which includes multiple grooves extending from the center point in different directions; the second end face of the limiting member has a locking block, which includes multiple protrusions extending from the center point in different directions and capable of engaging with the grooves. When the limiting member moves upward, the multiple protrusions extend into the multiple grooves one by one, and the locking block engages with the slot.

[0007] In one possible design, the upper end of the lead screw has a vertically formed first cavity, which includes a first main cavity and a first auxiliary cavity. The first auxiliary cavity is connected to the first main cavity and located on the periphery of the first main cavity. A fixed plate has a vertically formed second cavity, which includes a second main cavity and a second auxiliary cavity. The second auxiliary cavity is connected to the second main cavity and located on the periphery of the second main cavity. The first main cavity and the second main cavity have the same shape and are vertically connected, as do the second auxiliary cavity. The limiting member includes a main body and a secondary body. The shape of the main body is adapted to the first and second main cavities and passes through them. The shape of the secondary body is adapted to the first and second auxiliary cavities and passes through them.

[0008] In one possible design, a lead screw housed within a base is circumferentially fixed to a lateral portion. A third cavity is formed within the base, comprising a third secondary cavity and a third main cavity. The third secondary cavity and the third main cavity are connected and located on the periphery of the third main cavity. The shape of the lateral portion is adapted to the third secondary cavity, and the lead screw moves vertically within the third main cavity.

[0009] In one possible design, the vertical dimension of the main body is equal to the sum of the dimensions of the first main cavity and the second main cavity.

[0010] In one possible design, the fixed plate includes a support portion and a backing portion connected together. The support portion is configured as a disc, and the backing portion is configured as a cylinder. The backing portion is connected to the middle region of the lower surface of the support portion, and a second cavity penetrates through the support portion and the support portion.

[0011] In one possible design, the positioning drive includes a positioning part and a rotating part. The rotating part is rotatably connected to the base and threadedly connected to a lead screw; when the rotating part rotates, the lead screw moves up or down under the force of the rotating part. The positioning part is fixedly connected above the rotating part to support the support part.

[0012] In one possible design, the support plate has multiple mounting slots arranged in a circumferential array, each slot containing a ball bearing, with a rotating disk connected above the ball bearing.

[0013] In one possible design, the surface of the rotating disk has multiple positioning grooves of different diameters, and multiple positioning marks are fixed in a circular array within the positioning grooves; the multiple positioning marks are used to correspond to multiple test points of the diaphragm spring.

[0014] In one possible design, a display screen is also included, which is mounted on the top mount and electrically connected to the probe to display the hardness data measured by the probe.

[0015] Beneficial effects:

[0016] 1. In this invention, during the testing process, the lead screw rises, driving the limiting component to rise until the lead screw contacts the fixed disk and rises synchronously. At this point, the rotating disk is rotated, and the limiting component, after rotating, cooperates with the rotating disk to limit its rotation, keeping the rotating disk stable during the testing process. This ensures the accurate positioning of the probe at the diaphragm spring testing point and the stability of the test, improving the reliability of the test results. After the testing at this point is completed, the lead screw descends, and the fixed disk is limited by the upper end of the positioning drive component. The lead screw drives the limiting component to simultaneously disengage from the rotating disk, releasing the restriction on the rotating disk. At this point, the rotating disk can be easily rotated to achieve rapid switching to the next testing point. This ensures smooth limiting and release during multi-point testing of the diaphragm spring. Since there is no need for manual direct contact or movement of the diaphragm spring for point switching, friction between the diaphragm spring and the rotating disk surface is avoided, effectively preventing scratches on the diaphragm spring surface and improving the product's appearance quality and subsequent performance.

[0017] 2. This invention utilizes a rotatable rotating disk and a height-adjustable limiting component. Multiple test points of the diaphragm spring are placed on the upper end of a positioning marker. After testing one point, the lead screw descends to release the limiting component from the rotating disk, allowing the rotating disk to drive the diaphragm spring to the next test point. Once the spring is in position, the lead screw rises to re-lock the rotating disk with the limiting component. At this point, the probe always corresponds to the next test point, thus achieving precise positioning during multi-point testing of the diaphragm spring. This effectively avoids positioning deviations caused by manual operation, significantly improving testing efficiency and ensuring the accuracy and consistency of the test results.

[0018] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the overall structure of an online non-destructive testing device for diaphragm spring hardness.

[0021] Figure 2 This is a front view schematic diagram of an online non-destructive testing device for diaphragm spring hardness.

[0022] Figure 3 This is a schematic diagram of the internal cross-sectional structure of an online non-destructive testing device for diaphragm spring hardness.

[0023] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the fixed plate and lead screw in an online non-destructive testing device for diaphragm spring hardness.

[0024] Figure 5 This is a schematic diagram of the structure of a fixed disk and a rotating disk in an online non-destructive testing device for the hardness of a diaphragm spring.

[0025] Figure 6 This is a schematic diagram of the structure of the second cavity in an online non-destructive testing device for diaphragm spring hardness.

[0026] Figure 7 This is a schematic diagram of the lead screw in an online non-destructive testing device for diaphragm spring hardness.

[0027] Figure 8 This is a schematic diagram of the limiting component in an online non-destructive testing device for diaphragm spring hardness.

[0028] Figure 9 This is a schematic diagram showing the positional relationship between the probe and the positioning mark in an online non-destructive testing device for diaphragm spring stiffness.

[0029] Explanation of reference numerals in the attached drawings: 1. Body; 11. Top mount; 12. Connecting mount; 13. Base; 131. Third cavity; 1311. Third main cavity; 1312. Third auxiliary cavity; 2. Probe; 3. Supporting mechanism; 31. Lead screw; 311. First cavity; 3111. First main cavity; 3112. First auxiliary cavity; 312. Lateral part; 32. Fixing plate; 321. Support; 3211. Mounting groove; 322. Support 323, Second cavity; 3231, Second main cavity; 3232, Second auxiliary cavity; 33, Rotating disk; 331, Slot; 3311, Groove; 332, Positioning slot; 333, Positioning mark; 34, Positioning drive; 341, Positioning part; 342, Rotating part; 35, Limiting part; 351, Block; 3511, Protrusion; 352, Main body; 353, Sub-body; 36, Ball bearing; 4, Display screen. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0032] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0037] Figures 1-9 An online non-destructive testing device for diaphragm spring stiffness provided in this application includes a body 1, a probe 2, and a support mechanism 3. The body 1 includes a top seat 11, a connecting seat 12, and a base 13 connected in sequence, with at least a portion of the top seat 11 facing the base 13 in the vertical direction. The probe 2 is movably mounted on the side of the top seat 11 facing the base 13; the support mechanism 3 is located on the side of the base 13 facing the top seat 11, and the support mechanism 3 includes a lead screw 31, a fixed plate 32, a rotating plate 33, a positioning drive 34, and a limiting member 35; the lead screw 31 passes through the base 13 to move in the vertical direction; the positioning drive 34 is rotatably connected to the top of the base 13 and threaded to the outer periphery of the lead screw 31; the fixed plate 32 overlaps the positioning drive 34 to be located above the lead screw 31; the rotating plate 33 covers and is rotatably connected to the top of the fixed plate 32 to support the diaphragm spring; the limiting member 35 is located inside the lead screw 31 and the fixed plate 32, and the first end of the limiting member 35 passes downward through the lead screw 31, and the second end of the limiting member 35 can pass upward through the fixed plate 32 and engage with the rotating plate 33.

[0038] Using the above technical solution, the diaphragm spring to be tested is placed on the rotating disk 33. The positioning drive component 34 is rotated clockwise, causing the lead screw 31 to rise axially. During the rising process, the limiting component 35 rises synchronously with the lead screw 31. When the lead screw 31 rises to contact the fixed disk 32 and pushes the fixed disk 32 to rise synchronously, the rotating disk 33 is rotated until the limiting component 35 rotates and forms a limit on the rotating disk 33, restricting its rotation. The lead screw 31 continues to rise, causing the rotating disk 33 to be lifted to the fixed detection point under the drive of the lead screw 31.

[0039] After the rotating disk 33 is locked and its position is fixed, the probe 2 is activated to perform hardness testing on the diaphragm spring test point located directly below the probe 2. During this process, the rotating disk 33 remains stable under the action of the limiting member 35, thus ensuring the positioning and testing stability of the diaphragm spring test point by the probe 2. After the test at this point is completed, the probe 2 is turned off.

[0040] Rotating the positioning drive 34 counterclockwise causes the lead screw 31 to descend axially. The limiting component 35 descends synchronously with the lead screw 31. When the lead screw 31 descends to a certain height, the fixed disk 32 is limited by the upper structure of the positioning drive 34 and cannot continue to descend. As the lead screw 31 continues to descend, the limiting component 35 disengages from the limiting area of ​​the rotating disk 33, thereby releasing the lock on the rotating disk 33. In the unlocked state, rotating the rotating disk 33 rotates the next test point to be rotated directly below the probe 2, thus realizing the rapid switching of the next detection point. This ensures smooth limiting and release during multi-point detection of the diaphragm spring. Since there is no need for manual direct contact or movement of the diaphragm spring for point switching, friction between the diaphragm spring and the rotating disk 33 is avoided, effectively preventing scratches on the surface of the diaphragm spring and improving the appearance quality and subsequent performance of the product.

[0041] Repeat the above steps to rotate the positioning drive 34 to raise the lead screw 31, relock the rotating disk 33, and perform the next point detection.

[0042] In the above technical solution, the locking of the rotating disk 33 during testing and the unlocking of the rotating disk 33 during rotation are achieved through the lifting linkage limit component 35 of the lead screw 31, the fixed disk 32, and the rotating disk 33. The operator can switch between the testing state and the rotation state simply by turning the lead screw 31 clockwise or counterclockwise, without disassembly or complicated auxiliary operations, which significantly simplifies the multi-point testing process and improves testing efficiency.

[0043] It should be added that, due to the extreme sensitivity of diaphragm spring surface quality and fatigue life, an ultrasonic contact impedance (UCI) probe structure can be used to ensure reusability after testing. This probe mainly consists of a Vickers diamond indenter, a high-frequency ultrasonic transducer (piezoelectric ceramic), and a precision loading spring. Its working principle is to press the indenter into the material surface under extremely small static loads (typically only a few Newtons), simultaneously exciting high-frequency longitudinal vibrations. The hardness value is calculated by detecting the frequency shift caused by changes in the contact interface impedance. The ultrasonic contact impedance (UCI) probe structure ensures minimal or non-destructive testing of diaphragm springs. Because the required indentation force is extremely small, the indentation left on the diaphragm spring surface is extremely small (usually imperceptible to the naked eye and very shallow), completely avoiding damage to the material's metallographic structure or the generation of microcracks. This avoids stress concentration caused by hardness testing, ensuring that the elastic properties and fatigue life of the diaphragm spring remain unaffected, allowing it to be directly reused as a qualified product after testing. Furthermore, the probe's compact structure and fast response speed make it ideal for multi-point rapid scanning of diaphragm springs.

[0044] Furthermore, the lifting and lowering of probe 2 within the body 1 can refer to mature test head lifting designs in existing Rockwell hardness testers. For example, a structure can be adopted where a motor drives a lead screw to rotate, thereby driving the nut seat and the probe mounted on it to precisely lift and lower along a vertical guide rail; or a structure can be adopted where a cylinder / hydraulic cylinder directly pushes the test head to move up and down. Since the above lifting and driving methods are all conventional techniques well known to those skilled in the art, and mature commercial components (such as hardness tester lifting modules from brands like Inno and Nebo) are available on the market for direct application, this application will not elaborate on specific motor models, lead screw leads, or connecting details. The focus is on using this existing structure to achieve the probe's approach, contact, and loading action relative to the workpiece.

[0045] In one possible implementation, the bottom center region of the rotating disk 33 is provided with a slot 331, which includes a plurality of grooves 3311 extending from the center point in different directions; the second end face of the limiting member 35 is provided with a locking block 351, which includes a plurality of protrusions 3511 extending from the center point in different directions and capable of engaging with the grooves 3311. When the limiting member 35 moves upward, the plurality of protrusions 3511 extend into the plurality of grooves 3311 one by one, and the locking block 351 engages with the slot 331.

[0046] Using the above technical solution, the diaphragm spring is placed on the rotating disk 33. The rotating disk 33 is rotated so that the point to be tested is aligned with the detection probe 2 above. At this time, the slot 331 at the bottom of the rotating disk 33 rotates synchronously with the disk.

[0047] During the upward movement of the lead screw 31, until the lead screw 31 pushes the limiting member 35 to move upward synchronously, the locking block 351 on the second end face of the limiting member 35 rises accordingly. After rotating the rotating disk 33, the multiple protrusions 3511 on the locking block 351 extend into the multiple grooves 3311 in the slot 331 one by one. The protrusions 3511 and the grooves 3311 are tightly fitted, realizing the locking of the locking block 351 and the slot 331. At this time, the rotating disk 33 is limited by the limiting member 35 and cannot rotate, maintaining a fixed state.

[0048] After the detection probe 2 moves down, the hardness of the diaphragm spring to be tested on the rotating disk 33 is tested. Since the rotating disk 33 is stably locked by the interlocking structure of the locking block 351 and the slot 331, there is no shaking or displacement during the test, ensuring the accuracy of the test.

[0049] After the test is completed, the lead screw 31 descends, and the limiting member 35 moves down synchronously under the action of gravity until the fixed plate 32 is limited by the upper structure of the positioning drive member 34. The lead screw 31 continues to move down, and the protrusion 3511 on the locking block 351 disengages from the groove 3311. The locking state between the locking block 351 and the locking groove 331 is released, and the rotation restriction of the rotating plate 33 is released. At this time, the rotating plate 33 can be rotated to drive the diaphragm spring to rotate to the next test point. Repeating the above steps can complete the multi-point test.

[0050] In one possible implementation, the upper end of the lead screw 31 has a vertically formed first cavity 311, which includes a first main cavity 3111 and a first secondary cavity 3112. The first secondary cavity 3112 is connected to the first main cavity 3111 and is located on the periphery of the first main cavity 3111. The fixed plate 32 has a vertically formed second cavity 323, which includes a second main cavity 3231 and a second secondary cavity 3232. The second secondary cavity 3232 is connected to the second main cavity 3231 and is located on the periphery of the second main cavity 3231. The first main cavity 3111 and the second main cavity 3231 have the same shape and are vertically connected, and the second secondary cavity 3232 has the same shape and is vertically connected. The limiting member 35 includes a main body portion 352 and a secondary body portion 353; the shape of the main body portion 352 is adapted to the first main cavity 3111 and the second main cavity 3231, and passes through the first main cavity 3111 and the second main cavity 3231; the shape of the secondary body portion 353 is adapted to the first secondary cavity 3112 and the second secondary cavity 3232, and passes through the first secondary cavity 3112 and the second secondary cavity 3232.

[0051] Based on the above technical solution, the lead screw 31 is in the initial position, the main body 352 of the limiting member 35 passes through the first main cavity 3111 and the second main cavity 3231, and the auxiliary body 353 passes through the first auxiliary cavity 3112 and the second auxiliary cavity 3232. At this time, the limiting member 35 does not limit the rotating disk 33. The diaphragm spring is placed on the rotating disk 33, and the rotating disk 33 is rotated to adjust the detection point of the diaphragm spring.

[0052] As the lead screw 31 moves upward, the first cavity 311 moves upward accordingly, causing the limiting member 35, which passes through the first cavity 311 and the second cavity 323, to rise synchronously. During the rising of the limiting member 35, the main body 352 slides within the first main cavity 3111 and the second main cavity 3231, and the secondary body 353 slides within the first secondary cavity 3112 and the second secondary cavity 3232. When the limiting member 35 rises to the preset position, the rotating disk 33 is rotated, causing the second end locking block 351 of the limiting member 35 to engage with the locking groove 331 at the bottom of the rotating disk 33. At this time, the rotating disk 33 is fixed by the limiting member 35 and cannot rotate, ensuring the stability of the detection.

[0053] The detection probe 2 moves down to test the hardness of the diaphragm spring fixed on the rotating disk 33. Since the main body 352 and the secondary body 353 of the limiting member 35 slide in the main cavity and the secondary cavity respectively, a stable guiding structure is formed to prevent the limiting member 35 from shifting during the rising or locking process, thus ensuring the locking accuracy of the rotating disk 33.

[0054] After the test is completed, the lead screw 31 moves downward, and the first cavity 311 moves downward accordingly. Under its own gravity, the limiting member 35 descends synchronously along the first cavity 311 and the second cavity 323 until the fixed disk 32 is limited by the upper structure of the positioning drive member 34. The lead screw 31 continues to move downward, and the second end of the limiting member 35, the locking block 351, disengages from the slot 331 of the rotating disk 33. The rotation restriction of the rotating disk 33 is released. At this time, the rotating disk 33 can be rotated to switch to the next test point. Repeating the above steps can complete the multi-point test.

[0055] In one possible implementation, a lead screw 31 disposed within a base 13 is circumferentially fixedly connected to a lateral portion 312. A third cavity 131 is formed within the base 13, comprising a third secondary cavity 1312 and a third main cavity 1311. The third secondary cavity 1312 and the third main cavity 1311 are connected and located on the periphery of the third main cavity 1311. The shape of the lateral portion 312 is adapted to the third secondary cavity 1312, and the lead screw 31 moves vertically within the third main cavity 1311.

[0056] In the above scheme, the lead screw 31 is inserted into the third main cavity 1311, and the lateral part 312 is located in the third auxiliary cavity 1312. During the movement of the lead screw 31, the lead screw 31 slides in the third main cavity 1311, and the lateral part 312 slides in the third auxiliary cavity 1312. The cooperation between the lateral part 312 and the third auxiliary cavity 1312 can ensure that the lead screw 31 maintains vertical movement.

[0057] The lead screw 31 is adapted to the third main cavity 1311, and the lateral part 312 is adapted to the third auxiliary cavity 1312 to form a double cavity guide structure. This double-limits the vertical movement trajectory of the lead screw 31, preventing the lead screw 31 from rotating during the rising or falling process. It also ensures the stability of the lead screw 31 when it drives the limiting member 35 to move, thereby ensuring the accuracy of the engagement between the limiting member 35 and the rotating disk 33.

[0058] In one possible implementation, in the vertical direction, the size of the main body 352 is equal to the sum of the size of the first main cavity 3111 and the size of the second main cavity 3231.

[0059] With the above technical solution, the lead screw 31 is in a low position, and the main body 352 of the limiting member 35 is located in the first cavity 311 of the lead screw 31. At this time, the limiting member 35 is not in contact with the rotating disk 33, and the rotating disk 33 can rotate freely to adjust the detection point of the diaphragm spring.

[0060] As the lead screw 31 moves upward, the first cavity 311 of the lead screw 31 pushes the main body 352 of the limiting member 35 to rise synchronously. Since the size of the main body 352 is equal to the sum of the sizes of the first main cavity 3111 and the second main cavity 3231, when the lead screw 31 rises to the point where the first main cavity 3111 is completely aligned with the second main cavity 3231 of the fixed disk 32, the main body 352 of the limiting member 35 moves along the second main cavity 3231. After rotating the rotating disk 33, the top locking block 351 of the limiting member 35 contacts the locking groove 331 at the bottom of the rotating disk 33. As the lead screw 31 continues to rise, since the main body 352 has completely entered the second main cavity 3231, it cannot continue to rise with the lead screw 31. At this time, the lifting force of the lead screw 31 is transmitted to the rotating disk 33 through the main body 352 and the fixed disk 32, causing the rotating disk 33 to rise synchronously, while restricting the rotation of the lead screw 31, the fixed disk 32, and the rotating disk 33, until the rotating disk 33 rises to the detection point.

[0061] After the test is completed, as the lead screw 31 moves downward, the main body 352 of the limiting member 35 descends synchronously with the lead screw 31. After the fixed disk 32 is limited by the upper end of the positioning drive member 34, the first main cavity 3111 of the lead screw 31 moves away from the second main cavity 3231 of the fixed disk 32, the locking block 351 disengages from the slot 331 of the rotating disk 33, and the locking state of the rotating disk 33 is released. At this time, the rotating disk 33 can be rotated to switch to the next test point.

[0062] In one possible implementation, the fixed disk 32 includes a support portion 321 and a support portion 322 connected together. The support portion 321 is configured as a disk and the support portion 322 is configured as a cylinder. The support portion 322 is connected to the middle region of the lower surface of the support portion 321, and the second cavity 323 penetrates the support portion 322 and the support portion 321.

[0063] Based on the above technical solution, the fixed disk 32 is installed inside the positioning drive member 34 via the support part 322, and the supporting part 321 is disc-shaped and covers the top to support the rotation guide structure of the rotating disk 33. The second cavity 323 penetrates through the support part 322 and the supporting part 321, providing a vertical sliding channel for the limiting member 35.

[0064] When the lead screw 31 is driven to move upward, the limiting member 35 rises synchronously within the first cavity 311 of the lead screw 31 and the second cavity 323 of the fixed plate 32. The cylindrical structure of the support part 322 fits tightly within the positioning drive member 34, ensuring that the fixed plate 32 remains in a stable position and does not deflect during the lifting and lowering of the lead screw 31.

[0065] The limiting member 35 rises above the supporting part 321 and, after adjustment, engages with the rotating disk 33, thus locking the rotating disk 33. At this time, the disc-shaped structure of the supporting part 321 provides a stable bottom support for the limiting member 35, preventing the limiting member 35 from tilting or sinking when subjected to detection pressure.

[0066] After the test is completed, the lead screw 31 descends, the limiting member 35 falls back to the initial position along the second cavity 323, the supporting part 321 is limited by the positioning drive member 34, and the limiting member 35 is disengaged from the rotating disk 33, preparing for the next test.

[0067] In one possible implementation, the positioning drive 34 includes a positioning part 341 and a rotating part 342. The rotating part 342 is rotatably connected to the base 13 and threadedly connected to the lead screw 31; when the rotating part 342 rotates, the lead screw 31 moves up or down under the force of the rotating part 342. The positioning part 341 is fixedly connected above the rotating part 342 to support the support part 321.

[0068] With the above technical solution, when the detection position needs to be adjusted, the rotating part 342 is rotated. Since the rotating part 342 is rotatably connected to the base 13 and its internal thread engages with the lead screw 31, the rotational motion of the rotating part 342 is converted into the vertical linear motion of the lead screw 31. When the rotating part 342 rotates clockwise, the lead screw 31 moves upward under the thrust of the thread; when it rotates counterclockwise, the lead screw 31 moves downward, thereby driving the limiting member 35.

[0069] In one possible implementation, the support portion 321 has a plurality of mounting slots 3211 arranged in a circumferential array on its disc surface, and each mounting slot 3211 is provided with a ball bearing 36, with a rotating disk 33 connected above the ball bearing 36.

[0070] In the above technical solution, the rotating disk 33 is placed above the support portion 321 of the fixed disk 32, and the bottom surface of the rotating disk 33 contacts the tops of the balls 36 in the multiple mounting slots 3211. The balls 36, as rolling support elements, bear the weight of the rotating disk 33 and the diaphragm spring above it, as well as the vertical load generated when the detection probe 2 is pressed down.

[0071] After the detection of a point is completed, the lead screw 31 drives the limit member 35 to descend and disengage from the rotating disk 33. Then, the operator rotates the rotating disk 33. At this time, the rotating disk 33 rotates relative to the ball 36. The ball 36 rotates within the mounting groove 3211, converting sliding friction into rolling friction, thereby driving the diaphragm spring to rotate to the next detection angle.

[0072] After rotation to the desired position, the lead screw 31 rises, and the adjusting limit piece 35 re-inserts into the slot 331 at the bottom of the rotating disk 33 to lock it in place. At this time, the ball bearing 36 continues to provide stable bottom support, ensuring that the rotating disk 33 remains horizontal and does not tilt when subjected to detection pressure.

[0073] In one possible implementation, the rotating disk 33 has multiple positioning grooves 332 of different diameters on its surface, and multiple positioning marks 333 are fixed in a circular array within the positioning grooves 332; the multiple positioning marks 333 are used to correspond to multiple test points of the diaphragm spring.

[0074] It should be added that the positioning mark 333 has a one-to-one correspondence with the groove 3311 and the protrusion 3511, ensuring that after the rotating disk 33 rotates, the probe 2 will be directly above the positioning mark 333 every time the groove 3311 and the protrusion 3511 are engaged.

[0075] Using the above technical solution, multiple test points of the diaphragm spring are placed on the upper end of each positioning mark 333. The control screw 31 rises, and the limiting member 35 rises synchronously with the screw 31. When the screw 31 contacts and pushes the fixed disk 32, the rotating disk 33 is rotated until the limiting member 35 limits the rotating disk 33 and completes the locking. At this time, the first test point on the diaphragm spring can be accurately aligned with the probe 2 directly below.

[0076] Probe 2 then performs a hardness test. After completion, probe 2 is shut off, the lead screw 31 descends, causing the limiting member 35 to disengage from the rotating disk 33, releasing the lock. The rotating disk 33 is manually rotated to adjust the test point. The lead screw 31 is then raised again, and the limiting member 35 rises synchronously with the lead screw 31. When the lead screw 31 contacts and pushes the fixed disk 32, the rotating disk 33 is rotated again until the limiting member 35 limits the rotating disk 33. The above steps are repeated to automatically align the next test point with probe 2. This process is repeated until all test points have been completed.

[0077] Based on the above scheme, by setting a rotatable rotating disk 33 and a height-adjustable limiting component 35, multiple test points of the diaphragm spring are placed on the upper end of the positioning mark 333. After the test of one point is completed, the lead screw 31 descends to release the limiting component 35 from limiting the rotating disk 33, so that the rotating disk 33 can drive the diaphragm spring to rotate to the next test point. After rotating to the correct position, the lead screw 31 rises to make the limiting component 35 relock the rotating disk 33. At this time, the probe 2 always corresponds to the next test point, thus realizing the positioning in the multi-point test of the diaphragm spring, effectively avoiding positioning deviations caused by manual operation, which not only significantly improves the test efficiency, but also ensures the accuracy and consistency of the test results.

[0078] In one possible implementation, a display screen 4 is also included, which is disposed on the top base 11 and electrically connected to the probe 2 to display the hardness data measured by the probe 2.

[0079] It should be added that the operator inputs parameters such as the diaphragm spring model and target hardness range through the human-machine interface on display screen 4. After setting, clicking the start button on the screen puts the device into standby detection mode.

[0080] When probe 2 makes contact with the diaphragm spring, the hardness value collected by the sensor inside probe 2 is transmitted to display screen 4 in real time. The screen displays the hardness value of the current test point in digital or waveform form, allowing the operator to intuitively monitor the test process.

[0081] The processing unit inside display screen 4 compares the collected hardness value with a preset standard. If the value is within the acceptable range, the screen displays "acceptable" and records the data; if the value is abnormal, a red warning box pops up on the screen and marks the point, while the device can be paused or an alarm can be triggered.

[0082] After the test is completed, the operator can use the display screen 4 to query historical test records, generate statistical reports, or export the data to external devices through the interface to achieve digital management of test data.

[0083] In practice, the diaphragm spring to be tested is aligned with the test point on each positioning mark 333. The rotating part 342 is rotated clockwise, and the lead screw 31 rises axially. During the rising process, the limiting member 35 rises synchronously with the lead screw 31. When the lead screw 31 rises to contact the fixed plate 32 and pushes the fixed plate 32 to rise synchronously, the rotating plate 33 is rotated until the locking block 351 aligns with the locking groove 331 to form a limit. The plate continues to rise, so that the rotating plate 33 is lifted to the fixed test point under the drive of the lead screw 31.

[0084] Start probe 2 to test the hardness of the diaphragm spring located directly below probe 2. After the test is completed, turn off probe 2.

[0085] Rotating the rotating part 342 counterclockwise causes the lead screw 31 to descend, and the limiting member 35 descends synchronously with the lead screw 31. When the lead screw 31 descends to a certain height, the fixed plate 32 is limited by the upper structure of the positioning part 341 and cannot continue to descend. However, as the lead screw 31 continues to descend, the limiting member 35 disengages from the limiting area of ​​the rotating plate 33, releasing the lock on the rotating plate 33. With the limit released, rotating the rotating plate 33 adjusts the next test point to be rotated directly below the probe 2. Then, rotating the rotating part 342 clockwise repeats the above steps to relock the rotating plate 33 and perform the next test.

[0086] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An online non-destructive testing device for diaphragm spring hardness, characterized in that, include: The fuselage includes a top seat, a connecting seat, and a base connected in sequence, wherein at least a portion of the top seat is opposite to the base in the vertical direction; The probe is movably mounted on the side of the top seat facing the base; A support mechanism is located on the side of the base facing the top seat. The support mechanism includes a lead screw, a fixed plate, a rotating plate, a positioning drive component, and a limiting component. The lead screw passes through the base to move in the vertical direction. The positioning drive component is rotatably connected to the top of the base and threadedly connected to the outer periphery of the lead screw. The fixed plate overlaps the positioning drive component and is positioned above the lead screw. The rotating plate covers and is rotatably connected to the top of the fixed plate to support the diaphragm spring. The limiting member is located inside the lead screw and the fixed plate, and the first end of the limiting member passes downward through the lead screw, while the second end of the limiting member can pass upward through the fixed plate and engage with the rotating plate. The fixed disk has a second cavity vertically penetrating through it; The fixed plate includes a support portion and a supporting portion connected to each other. The support portion is configured as a disc, and the supporting portion is configured as a cylinder. The supporting portion is connected to the middle area of ​​the lower surface of the support portion, and the second cavity penetrates through the supporting portion and the support portion. The positioning drive component includes a positioning part and a rotating part; The positioning part is fixedly connected above the rotating part to support the supporting part.

2. The online non-destructive testing device for diaphragm spring hardness according to claim 1, characterized in that, The bottom center area of ​​the rotating disk is provided with a slot, which includes multiple grooves extending from the center point in different directions; the second end face of the limiting member is provided with a block, which includes multiple protrusions extending from the center point in different directions and capable of engaging with the grooves. When the limiting member moves upward, the plurality of protrusions extend into the plurality of grooves in a corresponding manner, and the locking block engages with the locking groove.

3. The online non-destructive testing device for diaphragm spring hardness according to claim 1, characterized in that, The upper end of the lead screw has a vertically formed first cavity, which includes a first main cavity and a first auxiliary cavity. The first auxiliary cavity is connected to the first main cavity and is located on the periphery of the first main cavity. The second cavity includes a second main cavity and a second auxiliary cavity, which is connected to the second main cavity and is located on the periphery of the second main cavity. The first main cavity and the second main cavity have the same shape and are vertically connected, and the second auxiliary cavity has the same shape and is vertically connected. The limiting member includes a main body and a secondary body; the shape of the main body is adapted to the first main cavity and the second main cavity, and passes through the first main cavity and the second main cavity; the shape of the secondary body is adapted to the first secondary cavity and the second secondary cavity, and passes through the first secondary cavity and the second secondary cavity.

4. The online non-destructive testing device for diaphragm spring hardness according to claim 3, characterized in that, The lead screw, which is installed inside the base, is circumferentially fixedly connected to a lateral part; The base has a third cavity, which includes a third secondary cavity and a third main cavity. The third secondary cavity and the third main cavity are connected and located on the periphery of the third main cavity. The shape of the lateral part is adapted to the third secondary cavity, and the lead screw moves vertically within the third main cavity.

5. The online non-destructive testing device for diaphragm spring hardness according to claim 3, characterized in that, In the vertical direction, the size of the main body is equal to the sum of the size of the first main cavity and the size of the second main cavity.

6. The online non-destructive testing device for diaphragm spring hardness according to claim 1, characterized in that, The rotating part is rotatably connected to the base and threadedly connected to the lead screw; when the rotating part rotates, the lead screw is moved up or down by the force of the rotating part.

7. The online non-destructive testing device for diaphragm spring hardness according to claim 1, characterized in that, The support plate has multiple mounting slots arranged in a circumferential array, and each mounting slot is equipped with a ball bearing. The rotating disk is connected above the ball bearing.

8. The online non-destructive testing device for diaphragm spring hardness according to claim 2, characterized in that, The rotating disk has multiple positioning grooves of different diameters on its surface, and multiple positioning marks are fixed in a circular array within the positioning grooves; the multiple positioning marks are used to correspond to multiple test points of the diaphragm spring.

9. The online non-destructive testing device for diaphragm spring hardness according to claim 1, characterized in that, It also includes a display screen, which is mounted on the top base and electrically connected to the probe to display the hardness data measured by the probe.

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