A knuckle assembly brake disc runout on-line detection device

Abstract

This utility model relates to the field of passenger vehicle steering knuckle assembly technology, specifically to an online detection device for brake disc runout in a steering knuckle assembly. The device includes: a lifting structure mounted on a support platform for driving the brake disc under test to move vertically up and down; a rotating mechanism for driving the brake disc under test at the upper end of the lifting structure to rotate around a vertical axis; a pressing mechanism located above the support platform for pressing the steering knuckle above the brake disc under test from top to bottom, keeping the steering knuckle stationary during the rotation of the brake disc; an elastic support component mounted on the upper end of the lifting structure, allowing the brake disc under test to float laterally and vertically during rotation detection; and a detection mechanism for collecting runout data from the upper and lower surfaces of the rotating brake disc under test. This utility model, by integrating the lifting mechanism, rotating mechanism, and elastic floating structure, achieves fully automatic, high-precision online detection, effectively improving assembly quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of passenger vehicle steering knuckle assembly technology, specifically to an online detection device for brake disc runout in a steering knuckle assembly. Background Technology

[0002] In the automotive manufacturing industry, the runout accuracy of the brake disc in the steering knuckle assembly directly affects the vehicle's braking performance and safety. Traditional testing methods have significant bottlenecks: off-line testing requires manual handling to a separate workstation, which is inefficient and costly; while online flip testing relies on robotic arms or manual 180° flipping, resulting in complex equipment structures, longer cycle times, and the flipping action easily introducing positioning errors. Existing technologies are insufficient to meet the demands of intelligent manufacturing for efficient, high-precision, and flexible testing. Therefore, there is an urgent need for an integrated online testing solution that can avoid secondary handling and posture adjustments of products, and improve test accuracy through precise positioning and dynamic compensation technologies. Utility Model Content

[0003] The main purpose of this invention is to provide an online detection device for brake disc runout of steering knuckle assembly, which aims to solve the problems of inefficiency caused by manual handling and long test cycles and errors caused by complex flipping mechanisms in traditional testing.

[0004] The technical solution adopted in this utility model is: an online detection device for brake disc runout of a steering knuckle assembly, comprising:

[0005] Platform;

[0006] The lifting structure is a vertical adjustment structure installed on the bearing platform for driving the brake disc under test to rise and fall vertically.

[0007] A rotating mechanism, which is a drive structure for driving the brake disc to be tested at the upper end of the lifting structure to rotate around a vertical axis;

[0008] The clamping structure, wherein the clamping mechanism is located above the bearing platform and is used to clamp the steering knuckle located above the brake disc to be tested from top to bottom, so that the steering knuckle remains stationary during the rotation of the brake disc to be tested;

[0009] An elastic support assembly is provided at the upper end of the lifting structure so that the brake disc to be tested can float horizontally and vertically during the rotation detection process;

[0010] The testing mechanism is used to collect the runout data of the upper and lower end faces of the rotating brake disc under test.

[0011] Furthermore, the resilient support components include,

[0012] Mounting base, the mounting base being detachably connected to a positioning fixture for positioning the brake disc to be tested;

[0013] Support base, which is fixed to the upper end of the lifting structure;

[0014] A first spring is vertically disposed between the mounting base and the support base.

[0015] Furthermore, the lifting structure includes:

[0016] A bearing housing, which is connected below the elastic support assembly;

[0017] A push plate, wherein the push plate is disposed at the lower end of the bearing seat;

[0018] A multi-position cylinder is fixed below the support platform, and its output end is vertically connected to the push plate to control the push plate to move in the vertical direction.

[0019] Furthermore, the rotating mechanism includes:

[0020] Servo motor;

[0021] A rotating shaft is inserted inside a bearing housing. The upper end of the rotating shaft is connected to an elastic support assembly, and the lower end is connected to a servo motor drive.

[0022] Furthermore, the device also includes a positioning mechanism, the positioning mechanism comprising:

[0023] A tray, with a detachable snap-fit ​​positioning fixture at the upper end of the tray;

[0024] The positioning fixture has a shaft hole at its upper end that mates with the brake disc to be tested for positioning the brake disc, and a flange on the outer side of its lower end.

[0025] Furthermore, a lifting mechanism is provided at the lower end of the tray, the lifting mechanism comprising:

[0026] A lifting plate is placed below a tray, and a through hole is provided between the lifting plate and the tray to allow the elastic support assembly to pass through;

[0027] A lifting cylinder, the output end of which is fixedly connected to a lifting plate, is used to drive the lifting plate to lift the tray during testing.

[0028] Furthermore, the upper end of the pallet is detachably connected to the positioning fixture via a snap-fit ​​structure, the snap-fit ​​structure including:

[0029] Multiple limiting seats are arranged circumferentially on the tray with the central through hole as the center.

[0030] The pressure block is disposed inside the limiting seat, and the side of the pressure block facing the positioning fixture is provided with a slot for engaging the outer flange of the lower end of the positioning fixture.

[0031] The second spring, which is horizontally placed between the limiting seat and the pressure block, is used to drive the pressure block to move to the flange side and press the pressure block onto the flange when the flange is engaged and enters the slot.

[0032] Furthermore, the lifting plate is also provided with an unlocking component for unlocking the snap-fit ​​structure, the unlocking component including:

[0033] An unlocking cylinder, the output end of which is inserted through the lifting plate from bottom to top;

[0034] The top block is fixed to the output end of the unlocking cylinder. When the unlocking cylinder drives upward, the top block abuts against the lower end face of the pressure block to drive the pressure block to disengage vertically from the flange of the positioning fixture to achieve unlocking.

[0035] Furthermore, the clamping structure includes:

[0036] A support frame, which is fixed to a load-bearing platform;

[0037] A locking cylinder, wherein the locking cylinder is a vertical cylinder fixed to the top plate of the support frame, and the output end of the locking cylinder is provided with a connecting plate;

[0038] Multiple pressure bars are provided, with the upper end of each pressure bar fixed to the lower end face of the connecting plate, and the pressure bars are arranged vertically.

[0039] Furthermore, the clamping structure also includes a first guide rod, which passes through the top plate of the support frame, and the upper end of the first guide rod is fixedly connected to a first fixing plate for preventing the first guide rod from coming off the top plate of the support frame during vertical movement.

[0040] Furthermore, the servo motor and rotating shaft are also equipped with a speed reducer.

[0041] Furthermore, it also includes several vertically movable second guide rods that pass through the support platform at the lower end of the lifting plate to guide the movement of the lifting plate.

[0042] Furthermore, it also includes a second fixed plate, which can be fixed to the underside of the bearing platform by a connecting column, and the multi-position cylinder is fixed on the second fixed plate.

[0043] Furthermore, the carrying platform is also equipped with a blocking mechanism. When the tray flows to this inspection unit with the production line, the blocking mechanism can block the tray and position it at the inspection location.

[0044] Furthermore, the pallet is also equipped with an anti-rotation limit block, which is connected to the connecting arm of the steering knuckle on the product to prevent it from rotating with the product bearing below.

[0045] Furthermore, the laser displacement sensor is positioned above the support platform, at the same horizontal level as the product being tested, and is used to detect changes in vertical displacement when the product rotates.

[0046] Furthermore, the testing facility also includes product detection sensors located diagonally across the support platform to detect whether there are products on the pallet.

[0047] The beneficial effects of this utility model are as follows: 1. This device, through the synergistic effect of the integrated lifting structure, rotating mechanism, and elastic support components, achieves fully automatic positioning, rotation, and dynamic adaptive adjustment of the brake disc, significantly improving detection efficiency and accuracy. The clamping structure, through self-locking and the lower lifting mechanism, jointly clamps the brake disc on the positioning fixture and the steering knuckle on the brake disc, forming a stable structure in the vertical direction. This ensures that the brake disc rotates independently under actual assembly conditions, eliminating the influence of external interference on the fluctuation data. The vertical floating design of the elastic support components can absorb equipment vibration and assembly gap errors, reducing mechanical wear while improving detection stability. This device is suitable for online inspection scenarios on production lines, effectively improving the detection efficiency and quality of the steering knuckle assembly brake disc, and providing an efficient and reliable solution for the dynamic performance evaluation of the steering knuckle assembly.

[0048] 2. An elastic support assembly is set up. By controlling the compression degree of the first spring in the elastic support assembly, a floating motion is generated between the positioning fixture and the lifting mechanism. The slight deviation of the adaptive rotation mechanism during the rotation of the brake disc under test only reflects the true deformation or jump of the brake disc under test itself.

[0049] 3. The lifting structure achieves precise lifting control by driving the push plate with multi-position cylinders. Combined with the transmission effect of the bearing housing and the buffering characteristics of the elastic support components, it forms a floating positioning. The multi-position cylinders can be set with multiple stroke levels to meet the multiple height positioning requirements of the brake disc from positioning to detection. The push plate, as the power transmission medium, evenly distributes the cylinder thrust through planar contact, avoiding the problem of uneven load caused by local stress concentration, while reducing the mechanical wear of the positioning fixture. The combined structure of the bearing housing and the push plate optimizes the force transmission path.

[0050] 4. The rotating shaft is connected to the mounting base. The servo motor drives the mounting base to rotate around the vertical axis by driving the rotating shaft, and drives the positioning fixture and the brake disc to be tested to rotate.

[0051] 5. A positioning mechanism is provided to position the brake disc to be tested on the tray. The positioning mechanism will transfer the brake disc to be tested along with the production line to the testing device, avoiding secondary handling and posture adjustment of the product.

[0052] 6. A lifting mechanism is installed to ensure close contact between the pallet and the lifting plate, providing a support structure for the pallet and positioning the pallet.

[0053] 7. A snap-fit ​​structure is set up so that the positioning fixture can be automatically aligned and locked through the coordinated action of the pressure block and the second spring, thereby improving loading and unloading efficiency; the second spring drives the pressure block to press the side of the positioning fixture, ensuring that the positioning fixture and the brake disc to be tested do not shift during transportation and testing.

[0054] 8. The unlocking component converts the vertical lifting motion into the rotational motion of the pressure block, achieving rotational unlocking, simplifying operation, and enabling rapid positioning and self-locking.

[0055] 9. Through the coordinated design of the locking cylinder and the pressure rod, efficient and stable clamping control is achieved. The output end of the locking cylinder drives the connecting plate and the pressure rod to press down precisely. After the lower end of the pressure rod or the pressure head contacts the steering knuckle, the locking cylinder automatically triggers the vertical mechanical locking to form a fixed position and ensure stable clamping force.

[0056] 10. A first guide rod is provided to eliminate lateral offset. A first fixing plate is provided at the upper end of the first guide rod to prevent the first guide rod from accidentally coming loose from the top plate of the support frame. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the online detection device for brake disc runout of the steering knuckle assembly in an embodiment of this utility model;

[0058] Figure 2 This is a schematic diagram of the lifting mechanism, rotating mechanism, and jacking structure according to an embodiment of the present invention;

[0059] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of the unlocking component at point A in the middle;

[0060] Figure 4 This is a cross-sectional view of the lifting mechanism, rotating mechanism, and jacking structure in an embodiment of the present invention;

[0061] Figure 5 This is an embodiment of the present utility model. Figure 4 Cross-sectional view of the elastic support component structure at point B;

[0062] Figure 6 This is a schematic diagram of the structure on the tray in an embodiment of the present invention;

[0063] Figure 7 As an embodiment of this utility model Figure 6 Schematic diagram of the snap-fit ​​structure at point C;

[0064] Wherein: 1—support frame; 101—support frame top plate; 2—pallet; 3—multi-position cylinder; 4—bearing seat; 401—rotating shaft; 5—bearing platform; 6—lifting plate; 601—support seat; 602—first spring; 603—second guide rod; 604—mounting seat; 605—positioning pin; 7

[0065] —Pressure rod; 8—Locked cylinder; 801—First guide rod; 802—First fixing plate; 803

[0066] —Connecting plate; 9—Positioning fixture; 10—Laser displacement sensor; 11—Servo motor; 12

[0067] —Reducer; 13—Second fixed plate; 1301—Fixed column; 14—Push plate; 1401—Connecting column; 15—Unlocking cylinder; 1501—Top block; 16—Brake disc; 17—Limit seat; 1701—Second spring; 1702—Pressure block; 18—Product detection sensor; 19—Anti-rotation limit block; 20—Lifting cylinder; 21—Steering knuckle; 22—Blocking mechanism. Detailed Implementation

[0068] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary. The drawings are not drawn to scale and are intended to explain this utility model, and should not be construed as limiting this utility model.

[0069] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0072] This utility model relates to an online detection device for brake disc runout in a steering knuckle assembly, which is used in the production line of automotive steering knuckle assemblies. It is directly integrated after the brake disc assembly station to achieve fully automatic and high-precision runout detection, replacing the traditional manual handling or flipping detection method. This ensures that the brake disc assembly quality meets vehicle safety standards, and is also suitable for the rapid changeover detection needs of multiple product models.

[0073] An online detection device for brake disc runout in a steering knuckle assembly, such as Figure 1-7 As shown, it includes:

[0074] Platform 5;

[0075] The lifting structure is a vertical adjustment structure installed on the bearing platform 5 for driving the brake disc 16 to be tested to rise and fall vertically.

[0076] A rotating mechanism, which is a drive structure for driving the brake disc 16 to be tested at the upper end of the lifting structure to rotate around a vertical axis;

[0077] The clamping structure is located above the bearing platform 5 and is used to clamp the steering knuckle 21 located above the brake disc 16 to be tested from top to bottom, so that the steering knuckle 21 is stationary during the rotation of the brake disc 16 to be tested.

[0078] An elastic support assembly is provided at the upper end of the lifting structure so that the brake disc 16 to be tested can float horizontally and vertically during the rotation detection process.

[0079] The detection mechanism is used to collect the runout data of the upper and lower end faces of the rotating brake disc 16 to be tested.

[0080] Before use, the lifting mechanism is in the initial position, i.e., the first position. After the brake disc 16 to be tested reaches the testing position, the lifting mechanism lifts the brake disc 16 to be tested to the third position. The clamping structure is activated to clamp the product fixture 9, the steering knuckle 21 on the product fixture 9 and the brake disc 16 between the lifting mechanism and the clamping structure. At this time, the elastic support component is fully clamped. The lifting mechanism retracts to the second position. At this time, the elastic support component is still in the clamped state, but there is a floating between the lifting mechanism and the brake disc 16. The rotation mechanism is activated to rotate the brake disc 16 to be tested around the vertical axis, and the testing mechanism is activated to detect the jump data of the product 16 during the rotation process. After the test is completed, the lifting structure returns to the initial position, the clamping structure retracts, and the brake disc 16 moves with the production line to the next station and enters the next cycle.

[0081] In one embodiment, the resilient support component includes,

[0082] Mounting base 604, which is detachably connected to the positioning fixture 9 for positioning the brake disc 16 to be tested;

[0083] Support base 601, the support base 601 is fixed to the upper end of the lifting structure;

[0084] A first spring 602 is vertically disposed between the mounting base 604 and the support base 601.

[0085] The elastic support assembly is located between the lifting mechanism and the positioning fixture 9. The mounting base 604 on the elastic support assembly is provided with a positioning pin, which is detachably connected to the positioning fixture 9 to accurately position the positioning fixture 9. The support base 601 is connected to the lower lifting mechanism. A first spring 602 is provided between the mounting base 604 and the support base 601 to facilitate the floating between the positioning fixture 9 and the lifting mechanism.

[0086] The elastic support component can be used to support the positioning fixture 9 on the one hand, and on the other hand, by controlling the compression degree of the elastic support component, the positioning fixture 9 and the lifting mechanism can float. The small deviation of the adaptive rotation mechanism during the rotation of the brake disc 16 under test only reflects the actual deformation or jump of the brake disc 16 under test itself.

[0087] In one embodiment, the lifting structure includes:

[0088] Bearing housing 4, which is connected below the elastic support assembly;

[0089] Push plate 14, the push plate 14 is disposed at the lower end of bearing seat 4;

[0090] A multi-position cylinder 3 is fixed below the support platform 5. The output end of the multi-position cylinder 3 is vertically connected to the push plate 14 and is used to control the push plate 14 to move in the vertical direction.

[0091] When the lifting mechanism lifts the positioning fixture 9, the multi-position cylinder 3 is activated. The output end of the multi-position cylinder 3 controls the lifting and lowering of the push plate 14 and the bearing seat 4 on the push plate 14. The push plate 14 is provided, and the multi-position cylinder 3 can be connected to the push plate 14 through its output end. The push plate 14 pushes the positioning fixture 9 to move vertically, at which time the elastic support assembly is located between the push plate 14 and the positioning fixture 9. The bearing seat 4 serves as the medium for the push plate 14 to push the positioning fixture 9.

[0092] Preferably, the second fixing plate 13 is fixed below the bearing platform 5 by a connecting column 1301, and the multi-position cylinder 3 is fixed on the second fixing plate 13.

[0093] A second fixing plate 13 is provided to fix the output end of the multi-position cylinder 3, providing an independent mounting base for the cylinder. This avoids local deformation that may be caused by the cylinder being directly mounted on the bearing platform, improves the overall structural rigidity, ensures uniform force distribution during cylinder operation, and reduces the impact of vibration on the accuracy of the bearing platform.

[0094] In one embodiment, the rotating mechanism includes:

[0095] Servo motor 11;

[0096] A rotating shaft 401 is inserted inside the bearing seat 4. The upper end of the rotating shaft 401 is connected to an elastic support assembly, and the lower end is connected to the servo motor 11 for transmission.

[0097] The servo motor 11 can be fixed on the push plate 14 via the connecting column 1401, and can move vertically with the push plate 14, eliminating the transmission error caused by relative displacement in the traditional split structure; the upper end of the rotating shaft 401 is inserted into the pin hole of the mounting base 604, and the servo motor 11 drives the mounting base 604 to rotate around the vertical axis by driving the rotating shaft 401, and drives the positioning fixture 9 and the brake disc 16 to be tested to rotate.

[0098] Preferably, a reducer 12 is also provided between the servo motor 11 and the rotating shaft 401. The reducer 12 and the servo motor 11 can be fixed on the push plate 14 via the connecting column 1401. By providing the reducer 12, the reducer amplifies the output torque of the motor through the gear ratio, meeting the requirements of large load drive and realizing the requirements of small size, large torque, and high precision motion control.

[0099] In one embodiment, the device further includes a positioning mechanism, the positioning mechanism comprising:

[0100] Tray 2, with a detachable snap-fit ​​positioning fixture 9 at the upper end of the tray 2;

[0101] The positioning fixture 9 has a shaft hole at its upper end that mates with the brake disc 16 to be tested for positioning the brake disc 16 to be tested, and a flange on the outer side of its lower end.

[0102] The positioning fixture 9 is detachably snapped onto the upper end of the tray 2, which facilitates the use of the tray 2 to transport the positioning fixture 9 to the inspection position. The upper end of the positioning fixture 9 is provided with a shaft hole that mates with the hub unit of the brake disc 16 to be inspected, so that the brake disc 16 to be inspected can be positioned on the positioning fixture 9. The lower outer side of the positioning fixture 9 is provided with a flange that can form a snap-fit ​​structure with the components on the upper end of the tray 2, so that the positioning fixture 9 is positioned on the tray 2.

[0103] Using the above components, the brake disc 16 to be tested can be positioned on the positioning mechanism, and the positioning mechanism will transfer the brake disc 16 to be tested along with the production line to the testing device.

[0104] Preferably, the detection mechanism further includes a product detection sensor 18 located diagonally opposite the support platform 5, for detecting whether there is a product on the tray 2.

[0105] Preferably, the carrying platform 5 is also provided with a blocking mechanism 22. When the tray 2 flows to this detection mechanism with the production line, the blocking mechanism 22 can block the tray 2, so that the tray 2 is positioned at the detection position.

[0106] In one embodiment, the lower end of the tray 2 is provided with a lifting mechanism, the lifting mechanism comprising:

[0107] A lifting plate 6 is placed below the tray 2, and a through hole is provided between the lifting plate 6 and the tray 2 to allow the elastic support component to pass through.

[0108] The lifting cylinder 20 is fixedly connected to the lifting plate 6 at its output end and is used to drive the lifting plate 6 to lift the tray 2 during testing.

[0109] When a product is detected in pallet 2, the lifting cylinder 20 is activated. The output end of the lifting cylinder 20 is fixedly connected to the lifting plate 6, which drives the lifting plate 6 to lift pallet 2. A through hole is provided between the lifting plate 6 and pallet 2, allowing the elastic support component to pass through. During lifting, the elastic support component and bearing seat 4 pass through this through hole, contacting the bottom end of the upper positioning fixture 9, and can move vertically within the through hole, lifting the positioning fixture 9 and detaching it from pallet 2. The lifting mechanism ensures tight contact between pallet 2 and the lifting plate 6, providing a support structure for pallet 2 and performing initial positioning.

[0110] Preferably, the lifting plate 6 may be provided with a plurality of positioning pins 605, and the tray 2 is provided with corresponding pin holes. The pin holes on the tray 2 cooperate with the positioning pins 605 on the lifting plate 6. The lifting plate 6 can be raised by the lifting cylinder 20. The positioning pins 605 cooperate with the corresponding pin holes on the tray 2. On the one hand, the tray 2 can be positioned on the lifting plate 6, which can improve the positioning accuracy of the tray 2 and prevent the tray 2 from shifting. On the other hand, it can make the lifting plate 6 and the tray 2 in close contact.

[0111] Preferably, the lifting mechanism further includes a plurality of second guide rods 603 that are vertically movable and pass through the bearing platform 5 to guide the movement of the lifting plate 6, and a linear bearing sleeved on the second guide rods 603.

[0112] The second guide rod 603 causes the lifting cylinder 20 to drive the lifting plate 6 to move. The second guide rod 603 forms a sliding fit with the bearing platform 5, providing a forced constraint in the vertical direction. This suppresses the horizontal deviation or tilt of the lifting plate 6 caused by the eccentricity of the thrust of the lifting cylinder 20 or uneven load distribution, ensuring that the movement trajectory of the lifting plate 6 is strictly perpendicular to the bearing platform 5, and avoiding jamming or wear caused by angular deviation.

[0113] In one embodiment, the upper end of the tray 2 is detachably connected to the positioning fixture 9 via a snap-fit ​​structure, the snap-fit ​​structure including:

[0114] Multiple limiting seats 17 are arranged circumferentially on the tray 2 with the central through hole of the tray as the center.

[0115] The pressure block 1702 is disposed inside the limiting seat 17, and the side of the pressure block 1702 facing the positioning fixture 9 is provided with a slot for engaging the outer flange of the lower end of the positioning fixture 9.

[0116] The second spring 1701 is horizontally placed between the limiting seat 17 and the pressure block 1702. When the flange is engaged and enters the slot, the pressure block 1702 is driven to move to the flange side and press the pressure block 1702 onto the flange.

[0117] The snap-fit ​​structure allows the positioning fixture 9 to be detachably connected to the upper end of the tray 2, so that the positioning fixture 9 and the brake disc 16 to be tested can be transported to the testing position along with the tray 2. The top of the pressure block 1702 is provided with a downwardly inclined block-shaped protrusion, forming a guide slope, which guides the outer flange of the lower end of the positioning fixture 9 to slide along the guide slope. The lower part of the pressure block 1702 is provided with an inclined surface that is inclined towards the inner side of the limit seat, serving as an unlocking guide surface. The middle recess of the pressure block 1702, together with the upper block-shaped protrusion and the lower inclined surface, forms a slot.

[0118] When this device is in use, the outer flange at the lower end of the positioning fixture 9 is pressed down, and the flange slides along the guide slope on the upper part of the pressure block 1702. As the positioning fixture 9 is pressed down, the second spring 1701 is compressed. After the flange slides to the middle of the pressure block 1702, the second spring 1701 is released, allowing the protruding part at the lower end of the product positioning fixture 9 to fall into the slot. The second spring 1701 releases its elastic restoring force and presses the side surface of the positioning fixture 9 at the upper end of the flange. At this time, the positioning fixture 9 is detachably snapped onto the upper end of the tray 2.

[0119] A snap-fit ​​structure is set up so that the guide slope of the pressure block 1702 works in conjunction with the second spring 1701 to achieve automatic alignment and locking of the positioning fixture 9, thereby improving loading and unloading efficiency; the second spring 1701 drives the pressure block 1702 to press the side of the positioning fixture 9 to ensure that the positioning fixture 9 and the brake disc 16 to be tested do not shift during transportation and testing.

[0120] In one embodiment, the lifting plate 6 is further provided with an unlocking component for unlocking the locking structure, the unlocking component comprising:

[0121] Unlocking cylinder 15, the output end of which is inserted through the lifting plate 6 from bottom to top;

[0122] Top block 605 is fixed to the output end of unlocking cylinder 15. When unlocking cylinder 15 is driven upward, top block 605 abuts against the lower end face of pressure block 1702 to drive pressure block 1702 to disengage vertically from the flange of positioning fixture 9 to achieve unlocking.

[0123] When testing the brake disc 16, the latch between the tray 2 and the positioning fixture 9 needs to be unlocked. Then, the positioning fixture 9 and the brake disc 16 to be tested at its upper end are rotated. Therefore, the unlocking cylinder 15 is activated. The top plate of the output end of the unlocking cylinder 15 is provided with a top block 605. The top block 605 can abut against the unlocking guide surface on the pressure block 1702. As the top block 605 rises and its lifting force is applied to the unlocking guide surface, the vertical lifting motion is converted into the rotational motion of the pressure block through the inclined plane component force. The vertical force is converted into rotational unlocking, which simplifies the operation. The block-shaped protrusion on the upper part of the pressure block 1702 can be disengaged from the outer flange at the lower end of the positioning fixture 9, and the latching structure can be released. This can achieve rapid positioning and self-locking.

[0124] In one embodiment, the clamping structure includes:

[0125] Support frame 1, which is fixed on the bearing platform 5;

[0126] The locking cylinder 8 is a vertical cylinder fixed on the top plate 101 of the support frame, and the output end of the locking cylinder 8 is provided with a connecting plate 803.

[0127] Multiple pressure rods 7, the upper end of which is fixed to the lower end face of the connecting plate 803, and the pressure rods 7 are arranged vertically.

[0128] Preferably, the lower end of the pressure rod 7 is provided with a pressure head, which can increase the contact area between the pressing structure and the steering knuckle 21, disperse the pressure, and stabilize the pressing structure.

[0129] Through the coordinated design of the locking cylinder 8 and the pressure rod 7, efficient and stable clamping control is achieved. The output end of the locking cylinder 8 drives the connecting plate 803 and the pressure rod 7 to press down precisely. After the lower end of the pressure rod 7 or the pressure head contacts the steering knuckle 21, the locking cylinder 8 automatically triggers the vertical mechanical locking to form a fixed position and ensure stable clamping force.

[0130] In one embodiment, the clamping structure further includes a first guide rod 801, which passes through the top plate 101 of the support frame. The upper end of the first guide rod 801 is fixedly connected to a first fixing plate 802 for preventing the first guide rod 801 from coming off the top plate 101 of the support frame during vertical movement.

[0131] Its first guide rod 801 and first fixing plate 802 can eliminate lateral offset and prevent the first guide rod 801 from accidentally coming loose.

[0132] Preferably, the tray 2 is also provided with an anti-rotation limiting block 19, which is connected to the connecting arm of the steering knuckle 21 on the product to prevent it from rotating with the brake disc 16 below.

[0133] Preferably, the laser displacement sensor 10 is located above the support platform 5 and is on the same horizontal line as the product being tested, and is used to detect the vertical displacement change when the product rotates.

[0134] The specific implementation process of this utility model is as follows:

[0135] 1. The tray 2 and the positioning fixture 9 for placing the brake disc 16 to be tested are fixed by a snap-fit ​​structure. The tray can be moved to the testing position of this testing mechanism along with the production line. The product detection sensor 18 is used to detect whether there is a product on the tray 2. When the product detection sensor 18 detects a product, the lifting cylinder 20 is activated to lift the tray 2. The unlocking cylinder 15 is activated, the top block 605 extends and lifts the pressure block 1702. As the pressure block 1702 is lifted, the positioning fixture 9 and the tray 2 are unlocked, allowing the positioning fixture 9 to move vertically away from the tray 2.

[0136] 2. After the positioning fixture 9 and the tray 2 are unlocked, the output end of the multi-position cylinder 3 extends, driving the push plate 14 to move upward. The bearing seat 4 on the push plate 14 lifts the positioning fixture 9 to the third position. At the same time as the push plate 14 moves upward, the connecting column 1401 connected to the push plate 14 slides on the first fixed plate 802, and drives the servo motor 11 and reducer 12 at the lower end to move upward.

[0137] 3. After the positioning fixture 9 is lifted to the third position, the locking cylinder 8 is activated. The output end of the locking cylinder 8 drives the connecting plate 803 to move downward, causing the lower end 7 of the pressure rod to press down. The pressure head contacts the steering knuckle 21 on the brake disc 16 and presses it tightly. After pressing, the locking cylinder 8 self-locks. At this time, the first spring 602 between the support seat 601 and the mounting seat 604 is fully compressed. When the connecting plate 803 moves downward, since the first guide rod 801 and the output end of the locking cylinder 8 are both connected to the connecting plate 803, the downward movement of the output end of the locking cylinder 8 drives the first guide rod 801 to slide on the top plate 101 of the support frame, so that the first guide rod 801 plays a guiding role. Here, the first fixed plate 802 plays a limiting role to prevent the first guide rod 801 from detaching from the top plate 101 of the support frame due to moving too far downward.

[0138] 4. After the clamping structure is clamped and self-locked, the output end of the multi-position cylinder 3 retracts, controlling the positioning fixture 9 to move down to the second position. The first spring 602 is still in the clamping state, which makes the positioning fixture 9 and the bearing seat 4 float, thus making the lifting mechanism and the brake disc 16 float.

[0139] 5. Start the servo motor 11. The servo motor 11 amplifies the output torque of the servo motor 11 through the reducer 12 to meet the driving requirements and drive the product to rotate. At the same time, the laser displacement sensor starts to detect. The servo motor drives the product to rotate three times, and the laser displacement sensor records the value of the second rotation.

[0140] 6. After the test is completed, each mechanism automatically resets, that is, the multi-position cylinder 3 retracts to the first position, the locking cylinder 8 unlocks and returns to the initial state, the unlocking cylinder 15 starts the top block 1501 to extend, lift the pressure block 1702, the positioning fixture 9 falls down, and its lower outer flange falls into the slot of the pressure block 1702. The unlocking cylinder 15 closes, the top block 1501 retracts, the second spring 1701 releases the elastic restoring force, at this time the lower outer flange of the positioning fixture 9 can be inserted into the slot, the brake disc 16 and the positioning fixture 9 move with the tray 2 to the next station and enter the next cycle.

[0141] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An online detection device for brake disc runout in a steering knuckle assembly, characterized in that, include: Platform (5); The lifting structure is a vertical adjustment structure installed on the bearing platform (5) for driving the brake disc (16) to be tested to rise and fall vertically; A rotating mechanism, which is a drive structure for driving the brake disc (16) to be tested at the upper end of the lifting structure to rotate around the vertical axis; A pressing structure is located above the bearing platform (5) to press the steering knuckle (21) located above the brake disc (16) to be tested from top to bottom, so that the steering knuckle (21) remains stationary during the rotation of the brake disc (16); An elastic support assembly is provided at the upper end of the lifting structure so that the brake disc (16) to be tested can float horizontally and vertically during the rotation detection process; The testing mechanism is used to collect the runout data of the upper and lower end faces of the rotating brake disc (16) to be tested.

2. The online detection device for brake disc runout of steering knuckle assembly according to claim 1, characterized in that, The elastic support component includes, Mounting base (604), which is detachably connected to the positioning fixture (9) for positioning the brake disc (16) to be tested; A support base (601) is fixed to the upper end of the lifting structure; A first spring (602) is vertically disposed between the mounting base (604) and the support base (601).

3. The online detection device for brake disc runout of steering knuckle assembly according to claim 1, characterized in that, The lifting structure includes: Bearing housing (4), the bearing housing (4) is connected below the elastic support assembly; A push plate (14) is provided at the lower end of the bearing seat (4); A multi-position cylinder (3) is fixed below the bearing platform (5). The output end of the multi-position cylinder (3) is vertically connected to the push plate (14) to control the push plate (14) to move in the vertical direction.

4. The online detection device for brake disc runout of steering knuckle assembly according to claim 3, characterized in that, The rotating mechanism includes: Servo motor (11); A rotating shaft (401) is inserted inside the bearing seat (4). The upper end of the rotating shaft (401) is connected to an elastic support assembly, and the lower end is connected to a servo motor (11) for transmission.

5. The online detection device for brake disc runout of steering knuckle assembly according to claim 4, characterized in that, The device further includes a positioning mechanism, the positioning mechanism comprising: Tray (2), with a detachable snap-fit ​​positioning fixture (9) at the upper end of the tray (2); The positioning fixture (9) has a shaft hole at its upper end that mates with the brake disc (16) to be tested for positioning the brake disc (16) to be tested, and a flange at the lower outer side of the positioning fixture (9).

6. The online detection device for brake disc runout of steering knuckle assembly according to claim 5, characterized in that, The lower end of the tray (2) is provided with a lifting mechanism, which includes: A lifting plate (6) is placed below a tray (2), and a through hole is provided between the lifting plate (6) and the tray (2) to allow the elastic support assembly to pass through; A lifting cylinder (20) is fixedly connected to a lifting plate (6) at its output end, and is used to drive the lifting plate (6) to lift the tray (2) during testing.

7. The online detection device for brake disc runout of steering knuckle assembly according to claim 6, characterized in that, The upper end of the tray (2) is detachably connected to the positioning fixture (9) via a snap-fit ​​structure, the snap-fit ​​structure including: Multiple limiting seats (17) are arranged circumferentially on the tray (2) with the central through hole of the tray as the center. The pressure block (1702) is located inside the limiting seat (17). The side of the pressure block (1702) facing the positioning fixture (9) is provided with a slot for engaging the outer flange of the lower end of the positioning fixture (9). The second spring (1701) is horizontally placed between the limiting seat (17) and the pressure block (1702) to drive the pressure block (1702) to move to the flange side and press the pressure block (1702) onto the flange when the flange is engaged into the slot.

8. The online detection device for brake disc runout of steering knuckle assembly according to claim 7, characterized in that, The lifting plate (6) is also provided with an unlocking component for unlocking the snap-fit ​​structure, the unlocking component including: Unlocking cylinder (15), the output end of which is inserted through the lifting plate (6) from bottom to top; Top block (605) is fixed at the output end of unlocking cylinder (15). When unlocking cylinder (15) is driven upward, top block (605) abuts against the lower end face of pressure block (1702) to drive pressure block (1702) to disengage from the flange of positioning fixture in the vertical direction to achieve unlocking.

9. The online detection device for brake disc runout of steering knuckle assembly according to claim 1, characterized in that, The clamping structure includes: Support frame (1), which is fixed on the bearing platform (5); Locking cylinder (8) is a vertical cylinder fixed on the top plate (101) of the support frame. The output end of the locking cylinder (8) is provided with a connecting plate (803). Multiple pressure rods (7) are provided, with the upper end of each pressure rod (7) fixed to the lower end face of the connecting plate (803), and the pressure rods (7) are arranged vertically.

10. The online detection device for brake disc runout of steering knuckle assembly according to claim 9, characterized in that, The clamping structure also includes a first guide rod (801), which passes through the top plate (101) of the support frame. The upper end of the first guide rod (801) is fixedly connected to a first fixing plate (802) for preventing the first guide rod (801) from coming off the top plate (101) of the support frame during vertical movement.

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