A centering tool for a brake disc of an electric wheel of an automobile

Abstract

The utility model discloses a kind of automobile electric wheel brake disc centring tool, belong to automobile electric wheel brake disc technical field, and its technical solution main point includes support plate, the top of the support plate is welded with lifting mechanism, the front side welding of the lifting mechanism has replacement mechanism, replacement mechanism adopts the double connection structure of clamping plus threaded locking, when clamping pipe is butted with connector through insertion hole, reset spring pushes ball and embeds card ball groove, realizes preliminary positioning and pre-fixing, without manually aligning, subsequent by fixed screw rod through the through hole of clamping pipe and is screwed into the thread hole of connector, it can complete locking, without disassembling complex bolt or with special tool, operator can complete different specifications centring adaptation component in short time, such as the replacement of the positioning sleeve for different brake disc hole diameter, substantially reduce the downtime caused by component replacement, especially suitable for multi-vehicle type mixed line production scene, significantly improve overall assembly operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive electric wheel brake disc technology, and in particular to an automotive electric wheel brake disc centering tooling. Background Technology

[0002] Automotive electric wheel brake disc alignment fixture is a special tool used to ensure that the automotive electric wheel brake disc is correctly aligned with the wheel or other related components. Its purpose is to ensure that the center of the brake disc coincides with the center of the wheel, so as to improve the stability and reliability of the braking system.

[0003] To address the aforementioned issues, existing patents have provided solutions. However, existing centering fixtures lack a structure that allows for the quick replacement of positioning sleeves with different brake disc bore diameters. This results in a time-consuming and labor-intensive process for replacing positioning sleeves, requiring the use of specialized tools to disassemble multiple sets of fixing bolts, thereby reducing production efficiency.

[0004] To address this, a centering fixture for automotive electric wheel brake discs is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a centering tool for automotive electric wheel brake discs, which can solve the problem that existing automotive electric wheel brake discs lack a structure that allows for quick replacement of positioning sleeves with different brake disc bore diameters, resulting in time-consuming and labor-intensive positioning sleeve replacement processes that require the use of special tools to disassemble multiple sets of fixing bolts, thereby reducing production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centering fixture for an automotive electric wheel brake disc, comprising a support plate, a lifting mechanism welded to the top of the support plate, and a replacement mechanism welded to the front side of the lifting mechanism. The replacement mechanism includes a support rod, a connector, a threaded hole, several moving holes, a return spring, a ball bearing, a retaining tube, a insertion hole, several ball bearing slots, a through hole, and a fixing screw. The support rod is welded to the front side of the lifting mechanism, the connector is welded to the front side of the support rod, the threaded hole is opened on the inner side of the front side of the connector, the moving hole is opened on the front side of the connector surface, the return spring is fixedly connected to the inner side of the moving hole, the ball bearing is movably connected to the inner side of the moving hole, and the side of the return spring away from the moving hole contacts the surface of the ball bearing.

[0007] Preferably, the insertion hole is located on the inner side of the rear side of the retaining tube, the retaining tube is snapped onto the surface of the connector through the insertion hole, the retaining bead groove is located on the inner wall of the insertion hole, the through hole is located on the front side of the inner side of the retaining tube, the fixing screw is slidably connected to the inner side of the through hole, and the rear side of the fixing screw is threadedly connected to the inner side of the threaded hole.

[0008] Preferably, the lifting mechanism includes a fixed plate, a lifting groove, a lead screw, a threaded sleeve, a stepper motor, and a PLC controller, with the fixed plate welded to the top of the support plate.

[0009] Preferably, the lifting groove is located on the inner side of the front side of the fixed plate, the lead screw is rotatably connected to the inner side of the lifting groove, the threaded sleeve is threadedly connected to the surface of the lead screw, and the stepper motor is mounted on the top of the fixed plate.

[0010] Preferably, the top of the lead screw is connected to a connecting shaft via a flat key, the output end of the bottom of the stepper motor passes through the fixing plate and is fixedly connected to the top of the connecting shaft, the PLC controller is installed on the rear side of the fixing plate, and the support rod is welded to the front side of the threaded sleeve.

[0011] Preferably, a push rod is welded to the rear side of the top of the support plate, and a self-locking caster wheel is installed at the chamfered bottom of the support plate.

[0012] Preferably, a reinforcing ring is welded to the rear surface of the support rod, and a plurality of reinforcing rods are welded to the rear side of the connector, with the rear side of the reinforcing rods welded to the front side of the reinforcing ring.

[0013] Preferably, a reinforcing ring is welded at the connection between the support rod and the threaded sleeve, and the surface of the reinforcing ring is coated with an anti-corrosion coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The stepper motor in the lifting mechanism of this application can be driven by a PLC controller to drive the lead screw to rotate and convert it into linear lifting motion of the threaded sleeve. Compared with traditional manual lifting or cylinder lifting, this structure can control the lifting accuracy to the millimeter level or even higher. It can adjust the height reference when the brake disc is aligned, ensuring that the brake disc is completely aligned with the center axis of the wheel hub, motor output shaft and other components, avoiding alignment errors caused by height deviation, fundamentally reducing problems such as brake vibration and brake pad wear. At the same time, the thread transmission between the lead screw and the threaded sleeve has self-locking property. After the lifting is in place, no additional locking structure is needed to maintain a stable position, preventing the tooling from shifting due to force or vibration during the alignment process, further ensuring alignment accuracy. 2. The replacement mechanism of this application adopts a dual connection structure of snap-fit ​​and threaded locking. When the snap-fit ​​tube is connected to the connector through the insertion hole, the return spring pushes the ball to embed into the snap-fit ​​groove, realizing the initial positioning and pre-fixing without manual alignment. Subsequently, the locking is completed by screwing the fixing screw through the through hole of the snap-fit ​​tube and into the threaded hole of the connector. There is no need to disassemble complex bolts or use special tools. Operators can complete the replacement of different specifications of matching parts in a short time, such as the replacement of positioning sleeves for different brake disc hole diameters. This greatly reduces the downtime caused by part replacement, and is especially suitable for multi-model mixed production line scenarios, significantly improving the overall assembly operation efficiency. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the automotive electric wheel brake disc centering tooling of this utility model; Figure 2 This is a schematic diagram of the through hole structure of this utility model; Figure 3 This utility model Figure 2 A magnified view of point A in the middle; Figure 4 This is a schematic diagram of the stepper motor of this utility model; Figure 5 This is a schematic diagram of the structure of the PLC controller of this utility model.

[0016] In the diagram, 1. Support plate; 2. Lifting mechanism; 201. Fixed plate; 202. Lifting groove; 203. Lead screw; 204. Threaded sleeve; 205. Stepper motor; 206. PLC controller; 3. Replacement mechanism; 301. Support rod; 302. Connector; 303. Threaded hole; 304. Moving hole; 305. Return spring; 306. Ball bearing; 307. Locking tube; 308. Insertion hole; 309. Ball bearing groove; 310. Through hole; 311. Fixed screw; 4. Push rod; 5. Self-locking caster wheel; 6. Reinforcing ring; 7. Reinforcing rod; 8. Reinforcing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 The present invention provides the following technical solution: A central fitting for an electric wheel brake disc in an automobile includes a support plate 1. A lifting mechanism 2 is welded to the top of the support plate 1. A replacement mechanism 3 is welded to the front side of the lifting mechanism 2. The replacement mechanism 3 includes a support rod 301, a connector 302, a threaded hole 303, several moving holes 304, a return spring 305, a ball bearing 306, a retaining tube 307, a insertion hole 308, several ball bearing grooves 309, a through hole 310, and a fixing screw 311. The support rod 301 is welded to the front side of the lifting mechanism 2, the connector 302 is welded to the front side of the support rod 301, the threaded hole 303 is opened on the inner side of the front side of the connector 302, the moving hole 304 is opened on the front side of the surface of the connector 302, the return spring 305 is fixedly connected to the inner side of the moving hole 304, and the ball bearing 306 is movably connected to the inner side of the moving hole 304. The side of the return spring 305 away from the moving hole 304 contacts the surface of the ball bearing 306.

[0019] In this embodiment: A support plate 1 provides a stable support platform for the tooling. The support rod 301 connects the lifting mechanism 2 and the connector 302, transmitting support force and providing a stable mounting carrier for the replacement mechanism 3. The connector 302 supports and limits the threaded hole 303, the moving hole 304, the return spring 305, the ball bearing 306, and the retaining tube 307. The threaded hole 303 engages with the fixing screw 311, securely fixing the retaining tube 307 to the connector 302 via a threaded connection, enhancing the stability of the connection between the retaining tube 307 and the connector 302. The moving hole 304 provides installation and movement space for the return spring 305 and the ball bearing 306, ensuring that the ball bearing 306 can extend and retract normally under the action of the return spring 305, achieving initial positioning of the retaining tube 307. The return spring 305 consistently applies a thrust to the ball bearing 306, enabling the ball bearing 306 to... The ball joint 306 is tightly embedded in the retaining groove 309, achieving initial engagement and positioning of the retaining tube 307 and the connector 302, facilitating the subsequent installation of the fixing screw 311. Simultaneously, when disassembling the retaining tube 307, it pushes the ball 306 back to its original position, facilitating the removal of the retaining tube 307. The ball 306, under the action of the return spring 305, is embedded in the retaining groove 309, achieving rapid initial positioning of the retaining tube 307 and the connector 302. The insertion hole 308 cooperates with the connector 302, providing a positioning reference for the installation of the retaining tube 307. The retaining groove 309 cooperates with the ball 306 to achieve initial engagement and fixation of the retaining tube 307 and the connector 302. The through hole 310 provides a passage for the fixing screw 311, allowing it to smoothly connect with the threaded hole 303, achieving final fixation of the retaining tube 307. The fixing screw 311 can firmly fix the retaining tube 307 onto the connector 302.

[0020] Specifically, such as Figure 2 , Figure 3As shown, the insertion hole 308 is opened on the inner side of the rear side of the retaining tube 307. The retaining tube 307 is snapped onto the surface of the connector 302 through the insertion hole 308. The retaining ball groove 309 is opened on the inner wall of the insertion hole 308. The through hole 310 is opened on the front side of the inner side of the retaining tube 307. The fixing screw 311 is slidably connected to the inner side of the through hole 310. The rear side of the fixing screw 311 is threadedly connected to the inner side of the threaded hole 303.

[0021] Specifically, such as Figure 4 , Figure 5 As shown, the lifting mechanism 2 includes a fixed plate 201, a lifting groove 202, a lead screw 203, a threaded sleeve 204, a stepper motor 205, and a PLC controller 206. The fixed plate 201 is welded to the top of the support plate 1.

[0022] Specifically, such as Figure 4 , Figure 5 As shown, the lifting groove 202 is opened on the inner side of the front side of the fixed plate 201, the lead screw 203 is rotatably connected to the inner side of the lifting groove 202, the threaded sleeve 204 is threadedly connected to the surface of the lead screw 203, and the stepper motor 205 is installed on the top of the fixed plate 201.

[0023] In this embodiment: the fixed plate 201 provides a stable mounting base for components such as the lead screw 203 and the stepper motor 205. The lifting groove 202 provides movement space for the lead screw 203 and the threaded sleeve 204, and at the same time guides the lifting of the threaded sleeve 204 to prevent it from deviating during the lifting process. The lead screw 203 and the threaded sleeve 204 convert the rotational motion of the stepper motor 205 into the linear lifting motion of the threaded sleeve 204 through threaded transmission. The transmission accuracy is high and it has a self-locking function, which can keep the threaded sleeve 204 stably at the required height and ensure the accurate height reference when the brake disc is aligned. The stepper motor 205 serves as the lifting power source and its rotation angle can be controlled by the PLC controller 206 to realize the lifting of the threaded sleeve 204. The PLC controller 206 can control the operating parameters of the stepper motor 205 to achieve precise adjustment and control of the lifting height, and the operation is convenient.

[0024] Specifically, such as Figure 4 , Figure 5 As shown, the top of the lead screw 203 is connected to a connecting shaft via a flat key. The output end of the stepper motor 205 at the bottom passes through the fixing plate 201 and is fixedly connected to the top of the connecting shaft. The PLC controller 206 is installed on the rear side of the fixing plate 201, and the support rod 301 is welded to the front side of the threaded sleeve 204.

[0025] Specifically, such as Figure 5 As shown, a push rod 4 is welded to the rear side of the top of the support plate 1, and a self-locking caster wheel 5 is installed at the chamfered bottom of the support plate 1.

[0026] In this embodiment: by setting push rod 4, a convenient force application point is provided for the operator to push the tooling, which facilitates the movement and position adjustment of the tooling and saves manpower. By setting self-locking casters 5, the tooling can be flexibly moved to different working positions and has a self-locking function, which can lock the wheels during tooling operation to prevent the tooling from moving.

[0027] Specifically, such as Figure 2 As shown, a reinforcing ring 6 is welded to the rear surface of the support rod 301, and several reinforcing rods 7 are welded to the rear side of the connector 302. The rear side of the reinforcing rods 7 is welded to the front side of the reinforcing ring 8.

[0028] Specifically, such as Figure 1 As shown, a reinforcing ring 8 is welded at the connection between the support rod 301 and the threaded sleeve 204, and the surface of the reinforcing ring 8 is coated with an anti-corrosion coating.

[0029] In this embodiment: by setting a reinforcing ring 6, which cooperates with the reinforcing rod 7, the structural strength of the connection between the support rod 301 and the connector 302 is enhanced, the deformation of this part under stress is reduced, and the service life of the tooling is extended. By setting the reinforcing rod 7, the connection strength between the connector 302 and the support rod 301 is further enhanced, making the connector 302 more stable when subjected to the force of concentric operation. By setting a reinforcing ring 8, the structural strength of this connection part is enhanced, preventing loosening or breakage after long-term use. By setting an anti-corrosion coating, it can effectively resist the corrosion of the external environment and extend the service life of the reinforcing ring 8.

[0030] Working principle: First, the operator pushes the support plate 1 to the target work position using the push rod 4, then locks the self-locking caster 5 to prevent the tooling from shifting during operation. Next, according to the hole diameter of the brake disc to be aligned, the corresponding size clamping tube 307 is selected. At this time, the operator holds the clamping tube 307, aligning its rear insertion hole 308 with the connector 302 and inserting it. During insertion, the ball 306 in the moving hole 304 on the surface of the connector 302 automatically embeds into the ball groove 309 on the inner wall of the insertion hole 308 under the pushing force of the return spring 305, realizing the initial clamping and positioning of the clamping tube 307 and the connector 302, quickly completing the pre-installation of the positioning sleeve. Then, the clamping tube 307 and the connector 302 are then... 02 After initial clamping, the operator passes the fixing screw 311 through the through hole 310 on the inner front side of the clamping tube 307, aligns it with the threaded hole 303 on the inner front side of the connector 302, and tightens it clockwise. Through the rigid fixing effect of the threaded connection, the clamping tube 307 is firmly locked onto the connector 302. Then, according to the installation height requirements of the brake disc to be aligned, the operator inputs the target height parameter through the PLC controller 206. The PLC controller 206 sends a command to the stepper motor 205, controlling the stepper motor 205 to start and drive the connecting shaft connected to its bottom output end to rotate, thereby driving the lead screw 203 to rotate synchronously in the lifting groove 202 on the front side of the fixing plate 201. Due to the threaded sleeve 204 and the lead screw 203, 03. Threaded connection: The rotational motion of the lead screw 203 is converted into the linear lifting motion of the threaded sleeve 204 along the lifting groove 202. The support rod 301 is welded to the front side of the threaded sleeve 204. The replacement mechanism 3 and the positioning sleeve rise and fall synchronously with the threaded sleeve 204 until the height of the positioning sleeve is completely matched with the alignment height of the brake disc. The stepper motor 205 stops running. The thread self-locking function of the lead screw 203 and the threaded sleeve 204 keeps the positioning sleeve stably at the target height, preventing height deviation. Finally, the operator aligns the center hole of the brake disc of the electric wheel to be aligned with the positioning sleeve and inserts it. The clamping tube 307, through its hole diameter matching the center hole of the brake disc, forces the central axis of the brake disc to coincide with the reference axis of the positioning sleeve, thereby realizing the alignment of the brake disc. Align the brake disc with the center of the wheel hub and the motor output shaft to complete the centering positioning. After the brake disc is centered, the operator can proceed with the subsequent brake disc installation and fixing operations. After installation, unscrew the fixing screw 311 in the reverse direction and pull the clamping tube 307 outward. The ball groove 309 on the inner wall of the insertion hole 308 of the clamping tube 307 squeezes the ball 306, causing the ball 306 to compress the return spring 305 and retract into the moving hole 304 of the connector 302, releasing the clamping connection between the clamping tube 307 and the connector 302. Remove the old positioning sleeve. If it is necessary to replace the brake disc with another specification, the above steps can be repeated to replace the new positioning sleeve. Loosen the self-locking caster 5 and push the push rod 4 to move the tooling to an idle work position for storage. The entire centering operation process is completed.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automotive electric wheel brake disc centering tool comprising a support plate (1), characterized in that: A lifting mechanism (2) is welded to the top of the support plate (1), and a replacement mechanism (3) is welded to the front side of the lifting mechanism (2). The replacement mechanism (3) includes a support rod (301), a connector (302), a threaded hole (303), several moving holes (304), a return spring (305), a ball (306), a retaining tube (307), a plug hole (308), several retaining ball grooves (309), a through hole (310), and a fixing screw (311). The support rod (301) is welded to the lifting mechanism. (2) On the front side, the connector (302) is welded to the front side of the support rod (301), the threaded hole (303) is opened on the inner side of the front side of the connector (302), the moving hole (304) is opened on the front side of the surface of the connector (302), the return spring (305) is fixedly connected to the inner side of the moving hole (304), the ball (306) is movably connected to the inner side of the moving hole (304), and the side of the return spring (305) away from the moving hole (304) contacts the surface of the ball (306).

2. The automotive electric wheel brake disc centering fixture according to claim 1, characterized in that: The insertion hole (308) is located on the inner side of the rear side of the retaining tube (307). The retaining tube (307) is engaged with the surface of the connector (302) through the insertion hole (308). The retaining ball groove (309) is located on the inner wall of the insertion hole (308). The through hole (310) is located on the front side of the inner side of the retaining tube (307). The fixing screw (311) is slidably connected to the inner side of the through hole (310). The rear side of the fixing screw (311) is threadedly connected to the inner side of the threaded hole (303).

3. The automotive electric wheel brake disc centering fixture according to claim 1, characterized in that: The lifting mechanism (2) includes a fixed plate (201), a lifting groove (202), a lead screw (203), a threaded sleeve (204), a stepper motor (205), and a PLC controller (206). The fixed plate (201) is welded to the top of the support plate (1).

4. The centering tool for brake disc of electric wheel of automobile according to claim 3, characterized in that: The lifting groove (202) is opened on the inner side of the front side of the fixed plate (201), the lead screw (203) is rotatably connected to the inner side of the lifting groove (202), the threaded sleeve (204) is threadedly connected to the surface of the lead screw (203), and the stepper motor (205) is installed on the top of the fixed plate (201).

5. The automotive electric wheel brake disc centering tooling according to claim 3, characterized in that: The top of the lead screw (203) is connected to a connecting shaft via a flat key. The output end of the stepper motor (205) at the bottom passes through the fixing plate (201) and is fixedly connected to the top of the connecting shaft. The PLC controller (206) is installed on the rear side of the fixing plate (201). The support rod (301) is welded to the front side of the threaded sleeve (204).

6. The centering tool for a brake disc of an electric wheel of a vehicle according to claim 1, characterized in that: A push rod (4) is welded to the rear side of the top of the support plate (1), and a self-locking caster wheel (5) is installed at the chamfer at the bottom of the support plate (1).

7. The centering tool for brake disc of electric wheel of automobile according to claim 1, characterized in that: A reinforcing ring (6) is welded to the rear surface of the support rod (301), and a plurality of reinforcing rods (7) are welded to the rear side of the connector (302). The rear side of the reinforcing rods (7) is welded to the front side of the reinforcing ring (6).

8. The automotive electric wheel brake disc centering fixture according to claim 1, characterized in that: A reinforcing ring (8) is welded at the connection between the support rod (301) and the threaded sleeve (204), and the surface of the reinforcing ring (8) is coated with an anti-corrosion coating.

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