Automobile brake disc runout detection device

Abstract

The utility model discloses a kind of automobile brake disc run-out detection devices, it is characterized in that, including: machine table, positioning mechanism, jacking module, rotating assembly, disc surface run-out detection component;The jacking module is set in machine table lower part;The positioning mechanism is set on jacking module, for carrying the automobile brake disc to be detected;The jacking module is used to jacking automobile brake disc on positioning mechanism to the predetermined working position matched with rotating assembly;The rotating assembly is set on machine table, and is placed directly above positioning mechanism, for driving the automobile brake disc at predetermined working position to rotate;The disc surface run-out detection component is set on machine table, and is placed on the side of positioning mechanism, for carrying out disc surface run-out detection to automobile brake disc in rotation.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake disc technology, and in particular to an automotive brake disc runout detection device. Background Technology

[0002] With the rapid development of the automotive industry, the safety requirements for automotive braking systems are becoming increasingly stringent. As a key component of the braking system, the brake disc's machining and assembly precision directly affects the stability and comfort of the vehicle during braking. Excessive brake disc runout can easily lead to problems such as steering wheel vibration, brake pedal rebound, and increased braking noise during braking, and in severe cases, can even affect vehicle braking safety. Therefore, after brake disc machining or assembly, it is usually necessary to detect and control the brake disc runout.

[0003] In existing technologies, brake disc runout detection often employs contact gauges such as dial indicators or micrometers in conjunction with simple supports. In practice, the brake disc is typically supported on a fixture or spindle, and the runout is determined by manually rotating the disc while observing the gauge readings. This method has the following drawbacks: First, the brake disc's support and positioning are rudimentary, often relying solely on a simple shaft support, making it difficult to ensure precise radial and circumferential positioning, resulting in poor repeatability of the test results. Second, the rotation of the brake disc is entirely manual, leading to unstable speeds and potential wobbling during rotation, which can interfere with the true runout readings. Third, the gauge readings rely entirely on manual recording and judgment, resulting in low efficiency and susceptibility to operator experience and subjective factors, hindering batch and standardized testing. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides an automotive brake disc runout detection device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a vehicle brake disc runout detection device, characterized in that it includes: a machine base, a positioning mechanism, a lifting module, a rotating component, and a disc runout detection component; the lifting module is disposed at the lower part of the machine base; the positioning mechanism is disposed on the lifting module and is used to support the vehicle brake disc to be tested; the lifting module is used to lift the vehicle brake disc on the positioning mechanism to a predetermined working position that cooperates with the rotating component; The rotating component is mounted on the machine base and positioned directly above the positioning mechanism, and is used to drive the car brake disc located at the predetermined working position to rotate; the disc runout detection component is mounted on the machine base and positioned to one side of the positioning mechanism, and is used to detect the disc runout of the rotating car brake disc.

[0006] Preferably, the lifting module includes a lifting cylinder, guide components arranged on the four sides of the lifting cylinder, and a lifting plate disposed on the top of the guide components; The output end of the lifting cylinder is connected to the lifting plate.

[0007] Preferably, the guide assembly includes a guide shaft and a guide bearing sleeve fitted on the guide shaft.

[0008] Preferably, the positioning mechanism includes a support base and a positioning component disposed on the support base; the positioning component includes a positioning post for inserting into the center mounting hole of the vehicle brake disc, and a plurality of limiting posts disposed circumferentially along the positioning post, the limiting posts being used to cooperate with bolt holes or positioning holes on the vehicle brake disc to limit the vehicle brake disc circumferentially and radially.

[0009] Preferably, the rotating assembly includes a fixed frame mounted on the machine base, a rotary motor mounted on the fixed frame, a rotating plate connected to the output end of the rotary motor, a pressing head disposed below the rotating plate, a connecting rod with one end placed on the rotating plate and the other end placed on the pressing head, and a spring sleeved on the connecting rod and placed between the rotating plate and the pressing head.

[0010] Preferably, the disc runout detection assembly includes a sensor bracket mounted on the machine base and a displacement sensor mounted on the sensor bracket; the detection end of the displacement sensor faces the disc surface or outer circular surface of the vehicle brake disc, and the displacement sensor is used to output a displacement signal corresponding to the disc runout amount when the vehicle brake disc rotates with the rotating assembly.

[0011] Preferably, the machine tool is also equipped with a cooling fan and a support foot at the bottom.

[0012] The technical solution of this utility model has the following beneficial effects: This invention employs an automated testing method. A rotating component drives the brake disc to rotate, and a disc runout detection component performs precise measurement, replacing traditional manual visual inspection and dial indicator readings. This avoids human observation errors and subjective judgment problems, significantly reducing the false detection rate and improving the accuracy and reliability of the test. The equipment integrates components such as a lifting module and a positioning mechanism, realizing a fully automated process from material loading, lifting, rotation to testing. This significantly improves testing efficiency, reduces the time spent on manual installation and operation, and is suitable for mass production environments.

[0013] This utility model lifting module includes a lifting cylinder and multiple sets of guide components. This structure not only ensures the smoothness and verticality of the lifting movement, but also reduces the loading and unloading height and labor intensity of operators, making it suitable for production line operation.

[0014] The positioning mechanism of this utility model achieves precise positioning of the brake disc by means of a positioning post set on the bearing seat and multiple limiting posts arranged around the circumference of the positioning post. In the radial direction, the positioning post cooperates with the central mounting hole of the brake disc, and in the circumferential and further radial directions, the limiting posts cooperate with the bolt holes or positioning holes of the brake disc.

[0015] This invention relates to a displacement sensor that outputs a displacement signal corresponding to the runout of the disk surface in real time. It can be easily connected to a data acquisition card or measuring instrument for digital data acquisition and analysis. Compared to the traditional method of manual meter reading, this invention improves detection accuracy, reduces human error, and provides a foundation for subsequent data statistics and traceability.

[0016] This invention integrates a lifting module, a positioning mechanism, a rotating assembly, and a disc runout detection assembly onto a single machine platform. Support feet are installed at the bottom of the platform, and a cooling fan is installed inside to dissipate heat from components such as the rotating motor, ensuring stable operation of the device over extended periods. The overall structure is compact and occupies little space, making it suitable for placement at the end of a production line or at a quality inspection station. It enables rapid testing of automotive brake discs of different specifications and possesses excellent industrial applicability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 3 This is a structural schematic diagram of the positioning mechanism, lifting module, rotating component, and disc runout detection component of this utility model. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, 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 and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] 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 two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Reference Figures 1 to 3 This utility model provides an automotive brake disc runout detection device, including a machine base 1, a positioning mechanism 3, a lifting module 2, a rotating assembly 4, and a disc runout detection assembly 5. The machine base 1 is equipped with a cooling fan 6, and its bottom has support feet 7 for positioning. The machine base 1 is a rigid frame structure that supports the various functional components and provides an operating platform for the operator. A worktable is formed on the upper surface of the machine base 1, with the central area of ​​the worktable serving as the testing station, where the positioning mechanism 3 is located. The lower internal space of the machine base 1 is used to install the lifting module 2.

[0024] In use, the operator places the car brake disc 10 to be tested onto the positioning mechanism 3, and drives the positioning mechanism 3 and the car brake disc 10 on it to rise and fall through the lifting module 2, so that the car brake disc 10 is lifted to contact the driving part of the rotating component 4; the rotating component 4 drives the car brake disc 10 to rotate around its own axis; the disc runout detection component 5 detects the displacement of the disc surface or outer circle of the rotating car brake disc 10 to obtain the disc runout amount of the brake disc.

[0025] The lifting module 2 is located at the lower part of the machine base 1 and is mainly used to drive the positioning mechanism 3 and the automotive brake disc 10 thereon to move up and down vertically. Specifically, the lifting module 2 includes a lifting cylinder 21, multiple sets of guide components 22 arranged around the lifting cylinder 21, and a lifting plate 23 set on top of the guide components 22. The lifting cylinder 21 is a double-rod or single-rod cylinder, and its cylinder body is fixedly mounted on a mounting plate inside the machine base 1. The output end of the lifting cylinder 21 is fixedly connected to the bottom surface of the lifting plate 23. The lifting plate 23 is a rigid plate, and its upper surface is used to mount the positioning mechanism 3. When the lifting cylinder 21 extends or retracts, it drives the lifting plate 23 and the positioning mechanism 3 to reciprocate relative to the machine base 1 in the vertical direction, thereby realizing the raising and lowering of the automotive brake disc.

[0026] To ensure the stability and verticality of the lifting motion, multiple sets (e.g., four sets) of guide components 22 are provided around the outer periphery of the lifting cylinder 21. Each set of guide components 22 includes a vertically arranged guide shaft and a guide bearing sleeve sleeved on the guide shaft. During the lifting movement of the lifting plate 23 with the lifting cylinder 21, the cooperation between the guide shaft and the guide bearing sleeve achieves the guiding constraint of the lifting plate 23, thereby ensuring the smooth and reliable lifting movement of the positioning mechanism 3 and the automotive brake disc 10 and avoiding lateral swaying. Through the above structure, the lifting module 2 can complete the support and lifting of the positioning mechanism 3 in the lower space of the machine base 1, so that the automotive brake disc to be tested can be easily loaded and unloaded at a lower position, and automatically lifted to the appropriate height with the rotating component 4 and the disc surface runout detection component 5 during testing.

[0027] In this embodiment, the positioning mechanism 3 is mounted on the lifting plate 23 to support the vehicle brake disc 10 to be tested and to reliably position the vehicle brake disc 10. Specifically, the positioning mechanism 3 includes a support base 31 and positioning components mounted on the support base 31.

[0028] The support 31 is preferably a disc-shaped structure with a positioning component at its center. The positioning component includes a positioning pin 32 for insertion into the center mounting hole of the automotive brake disc, and several limiting pins 33 arranged circumferentially along the positioning pin 32. The outer diameter of the positioning pin 32 matches the inner diameter of the center mounting hole of the automotive brake disc 10, enabling radial coarse positioning of the brake disc when it is mounted on the positioning pin 32. The number of limiting pins 33 corresponds to the number of bolt holes or positioning holes on the automotive brake disc, and the distribution of the limiting pins 33 corresponds one-to-one with the positions of the bolt holes or positioning holes on the automotive brake disc. During clamping, the bolt holes or positioning holes of the automotive brake disc are fitted onto the corresponding limiting pins 33, thereby achieving circumferential and further radial limiting of the automotive brake disc. Through the cooperation of the positioning pin 32 and the limiting pins 33, accurate radial and circumferential positioning of the automotive brake disc relative to the positioning mechanism 3 is ensured, providing an accurate clamping reference for subsequent rotational drive and runout detection.

[0029] In this embodiment, the rotating component 4 is mounted on the machine base 1 and positioned directly above the positioning mechanism 3, and is used to drive the automotive brake disc 10 to rotate. Specifically, the rotating component 4 includes a fixed frame 41 mounted on the machine base 1, a rotary motor 42 mounted on the fixed frame 41, and a rotating plate 43 connected to the output end of the rotary motor 42.

[0030] The mounting frame 41 can be a gate-type or column-type structure, with its lower end fixed to the upper surface of the machine base 1 or the frame of the machine base 1, and its upper part used to install the rotary motor 42. The motor body of the rotary motor 42 is fixed on the mounting frame 41, and the end of its output shaft is fixedly connected to the rotating plate 43, so that the rotating plate 43 rotates together with the output shaft of the rotary motor 42.

[0031] To achieve the clamping and transmission of the automotive brake disc 10, the rotating assembly 4 also includes a clamping head 47 disposed below the rotating plate 43 and a connecting rod 45 connecting the rotating plate 43 and the clamping head 47. The upper end of the connecting rod 45 is fixed to the lower surface of the rotating plate 43, and the lower end is connected to the clamping head 47. A spring 46 is sleeved on the connecting rod 45, and the spring 46 is located between the rotating plate 43 and the clamping head 47. One end abuts against the lower surface of the rotating plate 43, and the other end abuts against the upper surface of the clamping head 47. The spring 46 is a helical compression spring. When the rotating plate 43 is pressed down, the spring 46 is compressed, thereby providing a downward elastic preload force to the clamping head 47.

[0032] The lower end face of the clamping head 47 is preferably machined into a contact surface adapted to the surface of the automotive brake disc, such as a flat surface or a surface with a shallow arc. Before testing, the lifting module 2 lifts the automotive brake disc 10 on the positioning mechanism 3 to the contact position with the clamping head 47. Under the action of the spring 46, the clamping head 47 applies an axial clamping force to the automotive brake disc, so that the automotive brake disc 10 is reliably pressed against the positioning mechanism 3, while ensuring coaxiality and friction during rotation. When the rotary motor 42 is working, it drives the rotating plate 43 and the connecting rod 45 to rotate together. Under the preload of the spring 46, the clamping head 47 maintains a clamping contact with the surface of the automotive brake disc, thereby driving the automotive brake disc to rotate around its own axis through friction, achieving stable rotational drive of the automotive brake disc.

[0033] In this embodiment, the disc runout detection component 5 is mounted on the machine base 1 and positioned to one side of the positioning mechanism 3, for detecting the disc runout of the rotating automotive brake disc 10. Specifically, the disc runout detection component 5 includes a sensor bracket mounted on the machine base 1 and a displacement sensor mounted on the sensor bracket.

[0034] The sensor bracket is fixed to the upper surface of machine base 1, and a mounting base for installing the displacement sensor is provided on it. The detection end of the displacement sensor faces the surface or outer cylindrical surface of the car brake disc. As the car brake disc rotates with the rotating assembly 4, the displacement sensor outputs a displacement signal in real time corresponding to the disc surface runout. The displacement sensor can be an inductive displacement sensor, a laser displacement sensor, or other types of non-contact or contact displacement sensors; this invention does not limit this type. By collecting the displacement signal from one or more rotations of the car brake disc 10, and combining it with the rotational speed or angle information of the rotating motor 42, the disc surface displacement change curve at different angular positions can be obtained, thereby calculating the maximum runout of the disc surface and realizing the detection of the car brake disc runout performance.

[0035] In this embodiment, to ensure the operational stability of the device during long-term operation, a cooling fan is also installed inside the machine base 1. The cooling fan is used to provide forced ventilation and heat dissipation for the rotary motor 42 inside the machine base 1, reducing internal temperature rise and preventing the performance degradation or failure of electrical components due to excessive temperature. Multiple support feet are provided at the bottom of the machine base 1. These support feet can be height-adjustable to stably support the machine base 1 on the ground and adjust its level according to the flatness of the ground to ensure that the axes of the positioning mechanism 3 and the rotating assembly 4 are vertical, thereby improving the accuracy of runout detection.

[0036] The working process of this automotive brake disc runout detection device is as follows: First, the operator places the 10 brake discs of the car to be tested onto the positioning mechanism 3; Then start the lifting cylinder 21 to lift the positioned car brake disc 10 to the rotating assembly 4; Then the rotating motor 42 of the rotating component 4 starts, driving the car brake disc 10 to rotate; During the rotation of the car brake disc, the displacement sensor outputs a displacement signal in real time corresponding to the runout of the car brake disc 10. This displacement signal can be transmitted to an external measuring instrument or data acquisition system to calculate the maximum runout of the car brake disc. After the test is completed, the rotating motor 42 is stopped, the lifting cylinder 21 is activated to return the lifting plate 23 to the initial lowering position, the clamping head 47 is released from the pressure on the car brake disc, and the operator removes the tested car brake disc, completing one test cycle.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A device for detecting brake disc runout in automobiles, characterized in that, include: The machine base includes a positioning mechanism, a lifting module, a rotating assembly, and a disc runout detection assembly. The lifting module is located at the bottom of the machine base. The positioning mechanism is located on the lifting module and is used to support the automotive brake disc to be tested. The lifting module is used to lift the automotive brake disc on the positioning mechanism to a predetermined working position that cooperates with the rotating assembly. The rotating component is mounted on the machine base and positioned directly above the positioning mechanism, and is used to drive the car brake disc located at the predetermined working position to rotate; the disc runout detection component is mounted on the machine base and positioned to one side of the positioning mechanism, and is used to detect the disc runout of the rotating car brake disc.

2. The automotive brake disc runout detection device according to claim 1, characterized in that, The lifting module includes a lifting cylinder, guide components arranged on the four sides of the lifting cylinder, and a lifting plate set on the top of the guide components; The output end of the lifting cylinder is connected to the lifting plate.

3. The automotive brake disc runout detection device according to claim 2, characterized in that, The guide assembly includes a guide shaft and a guide bearing sleeve fitted on the guide shaft.

4. The automotive brake disc runout detection device according to claim 1, characterized in that, The positioning mechanism includes a support base and a positioning component disposed on the support base; the positioning component includes a positioning post for insertion into the center mounting hole of the vehicle brake disc, and a plurality of limiting posts disposed circumferentially along the positioning post.

5. The automotive brake disc runout detection device according to claim 1, characterized in that, The rotating assembly includes a fixed frame mounted on the machine base, a rotary motor mounted on the fixed frame, a rotating plate connected to the output end of the rotary motor, a pressing head located below the rotating plate, a connecting rod with one end on the rotating plate and the other end on the pressing head, and a spring sleeved on the connecting rod and located between the rotating plate and the pressing head.

6. The automotive brake disc runout detection device according to claim 1, characterized in that, The disc runout detection assembly includes a sensor bracket mounted on the machine base and a displacement sensor mounted on the sensor bracket; the detection end of the displacement sensor faces the disc surface or outer circular surface of the vehicle brake disc, and the displacement sensor is used to output a displacement signal corresponding to the disc runout amount when the vehicle brake disc rotates with the rotating assembly.

7. The automotive brake disc runout detection device according to claim 1, characterized in that, The machine is also equipped with a cooling fan and support feet at the bottom.

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