Brake disc assembly positioning jig and positioning method
By using the elastic floating structure and dual centering positioning method of the brake disc assembly positioning fixture, the problems of wobble and insufficient centering stability during the brake disc assembly process are solved, achieving precise centering and efficient assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHERY COMMERCIAL VEHICLE (ANHUI) CO LTD
- Filing Date
- 2026-05-25
- Publication Date
- 2026-07-14
Smart Images
Figure CN122378622A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive brake disc assembly technology, and in particular to a brake disc assembly positioning fixture and its positioning method. Background Technology
[0002] As a core component of the automotive braking system, the assembly precision of the brake disc directly affects the vehicle's braking stability and driving safety. Among the problems, assembly runout is one of the most common quality issues during the brake disc assembly process.
[0003] Existing brake disc assembly fixtures mostly employ a fixed centering structure, relying on a single clamping component to position and clamp the brake disc. This cannot accommodate minor dimensional deviations of the brake disc itself or slight offsets during placement, easily leading to misalignment between the brake disc's center and the reference axis during assembly, resulting in wobble. Furthermore, existing fixtures use a single centering method, only capable of positioning the outer or inner ring of the brake disc, resulting in insufficient centering stability. This can easily lead to brake disc loosening during assembly, further exacerbating the wobble problem and failing to meet the assembly requirements of high-precision brake discs. For example, patent CN118544110A discloses a brake disc assembly device that positions the inner ring of the brake disc. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a brake disc assembly positioning fixture and its positioning method, which can automatically compensate for brake disc position deviations, achieve precise centering, and effectively avoid assembly misalignment.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention provides a brake disc assembly positioning fixture, including a support disc and a positioning mechanism; The support plate is equipped with a set of disc release rods for supporting the brake disc; The positioning mechanism comprises a set of elastic floating structures for elastically positioning the outer ring of the brake disc, the set of elastic floating structures being evenly distributed circumferentially on the support disc.
[0006] Further or preferred: The top of the plate-laying rod is equipped with a rubber structure.
[0007] The elastic floating structure includes a positioning post and a chuck block. The positioning post has an inner hole with an end opening. The chuck block has a spring rod located in the inner hole on one side. The inner hole has an elastic element that cooperates with the spring rod. The chuck block has a locking slot for locking onto the outer ring of the brake disc.
[0008] The support plate has a sliding groove along its radial direction, and a sliding rod with adjustable position is provided in the sliding groove. The positioning post is located on the sliding rod.
[0009] The support plate is equipped with a synchronous adjustment drive structure for driving the slide rods of a set of elastic floating structures to move and adjust synchronously.
[0010] The synchronous adjustment drive structure includes a rotating gear ring and a motor mounted on a support plate. The motor is equipped with a drive gear that meshes with the rotating gear ring. The support plate is equipped with a lead screw structure for driving the slide bar to slide. The outer end of the lead screw structure is equipped with a transmission gear that cooperates with the rotating gear ring.
[0011] The support plate is provided with a brake disc inner ring positioning structure for positioning the inner ring of the brake disc, which is located inside a set of disc release rods.
[0012] The brake disc inner ring positioning structure includes a positioning cylinder and a set of arc-shaped blocks for positioning the inner ring of the brake disc. The positioning cylinder has a set of slots along its circumferential direction. The inner side of the arc-shaped blocks has inclined plates located in the corresponding slots. The positioning cylinder has a central drive structure for driving the inclined plates of the set of arc-shaped blocks to move synchronously.
[0013] The central drive structure includes a wedge-shaped column and a turntable located at the top of the positioning cylinder. The outer edge of the wedge-shaped column engages with an inclined plate, and the lower part of the turntable is provided with a threaded rod that engages with the wedge-shaped column.
[0014] This invention provides a positioning method for positioning a brake disc using a brake disc assembly positioning fixture, comprising the following steps: Place the brake disc to be assembled on a set of disc release levers; The elastic floating structure is pushed to move towards the release rod, and the chuck block of the elastic floating structure is locked on the outer ring of the brake disc for positioning. The spring floating action in the elastic floating structure automatically compensates for the positional deviation of the brake disc, achieving floating centering. The inner ring positioning structure of the brake disc, located at the center of the support disc, positions the inner ring of the brake disc.
[0015] Compared with the prior art, the present invention has the following advantages: The brake disc assembly positioning fixture and its positioning method are reasonably designed. Through the elastic floating structure, the position deviation of the brake disc is automatically compensated to achieve precise centering, effectively avoid assembly wobble, and ensure the assembly accuracy of the brake disc. In addition, the fixture adopts dual centering and positioning, which simplifies the operation process and improves centering stability. At the same time, the flexible contact protects the surface of the brake disc, taking into account both assembly efficiency and product quality. Attached Figure Description
[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram of the positioning fixture structure of the present invention.
[0017] Figure 2This is a schematic diagram of the outer ring positioning mechanism of the present invention.
[0018] Figure 3 This is a schematic diagram of the inner ring positioning mechanism of the present invention.
[0019] Figure 4 This is a schematic diagram of the wedge-shaped post and the threaded vertical rod of the present invention.
[0020] Figure 5 This is a schematic diagram of the driving structure of the present invention.
[0021] In the picture: 1. Support plate; 2. Plate release rod; 3. Chuck cavity; 4. Slide groove; 5. Slide rod; 6. Circular cavity; 7. Chuck block; 8. Bay opening; 9. Rotary opening; 10. Threaded vertical rod; 11. Wedge-shaped column; 12. Limiting port; 13. Limiting rod; 14. Extension port; 15. Inclined plate; 16. Arc-shaped locking block; 17. Turntable; 18. Rotating handle; 19. Gear ring; 20. Threaded hole; 21. Threaded long rod; 22. Transmission gear; 23. Motor; 24. Disc; 25. Drive gear; 26. Spring rod; 27. Spring; 28. Support rod; 29. Rubber soft head; 30. Support vertical plate; 31. Gear groove. Detailed Implementation
[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.
[0023] Although the invention has been shown and described herein with reference to specific embodiments, it is not intended to be limited to the details shown. Rather, various modifications in detail may be made within the equivalent scope and scope of the claims without departing from the invention. In the drawings, the same item numbers refer to the same elements.
[0024] Throughout this disclosure, various terms are used to describe the physical shape or arrangement of features. Many of these terms are used to describe features conforming to a cylindrical or generally cylindrical geometry with the feature as its radius and a central axis perpendicular to that radius. Unless otherwise specified, the terms are given the following meanings: The terms “longitudinal,” “longitudinal,” “axial,” and “axial” refer to a direction, dimension, or orientation parallel to the central axis. The terms “radial” and “radially” refer to a direction, dimension, or orientation perpendicular to the central axis. The terms “inward” and “inner” refer to a direction, dimension, or orientation extending radially toward the central axis. The terms “outward” and “outer” refer to a direction, dimension, or orientation extending radially away from the central axis.
[0025] In this specification, relative terms such as “horizontal,” “vertical,” “upward,” “downward,” “top,” and “bottom,” and their derivatives (e.g., “horizontal,” “downward,” “upward,” etc.) should be interpreted as referring to the direction described or the direction shown in the accompanying drawings. These relative terms are for ease of description and are not generally intended to require a specific direction.
[0026] like Figures 1 to 5 As shown, the present invention provides a floating centering fixture to prevent brake disc assembly from swaying. It can achieve floating centering, precise positioning, convenient operation, and protect the surface of the brake disc, thereby improving the assembly quality of automotive brake discs.
[0027] In this application, unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art. The following describes some of the technical terms appearing in the embodiments of this application.
[0028] The brake disc is the core friction component of a vehicle's disc braking system. It is typically made of high-hardness cast iron and rotates synchronously with the wheel. When the vehicle brakes, the brake caliper clamps the brake disc, relying on friction to reduce the wheel's rotational speed and bring it to a stop. It offers advantages such as rapid heat dissipation, stable braking, excellent heat dissipation, and resistance to brake fade, and is widely used in passenger cars and various other vehicles.
[0029] The assembly precision of automotive brake discs directly affects vehicle braking stability and driving safety. Assembly runout is one of the most common quality problems during brake disc assembly. Existing brake disc assembly fixtures mostly employ a fixed centering structure, relying on a single clamping component to position and clamp the brake disc. Lacking a floating compensation mechanism, they cannot accommodate minor dimensional deviations of the brake disc itself or slight offsets during placement, easily leading to misalignment between the brake disc's center and the reference axis during assembly, resulting in runout. Furthermore, traditional fixtures often require manual adjustment and clamping, which is cumbersome and its positioning accuracy is greatly affected by human factors, resulting in low efficiency. Some fixtures also make hard contact with the brake disc surface during clamping, easily causing scratches and affecting the product's appearance and performance. In addition, existing fixtures use a single centering method, only able to position the outer or inner ring of the brake disc, resulting in insufficient centering stability. This can easily lead to brake disc loosening during assembly, further exacerbating the assembly runout problem and failing to meet the assembly requirements of high-precision brake discs.
[0030] To address the aforementioned technical problems, this application provides a brake disc assembly and positioning fixture that automatically compensates for brake disc position deviations through an elastic floating structure, achieving precise centering, effectively avoiding assembly wobble, and ensuring brake disc assembly accuracy.
[0031] like Figures 1 to 5As shown, this application provides a brake disc assembly and positioning fixture, including a support disc and a positioning mechanism; the support disc is provided with a set of disc-laying rods for supporting the brake disc, and the brake disc is placed on the set of disc-laying rods for support and positioning; the positioning mechanism is a set of elastic floating structures for elastically positioning the outer ring of the brake disc, and the set of elastic floating structures is evenly distributed on the support disc in the circumferential direction.
[0032] In some embodiments, the support plate is a horizontally arranged disc structure, and a set of support rods 28 are fixed at the lower part of the disc structure to support and fix the positioning fixture.
[0033] Preferably, the support rod is a cylindrical or square rod with a certain height, and the height of the support rod should be sufficient to facilitate manual assembly. The upper end of the support rod is fixedly connected to the lower part of the disc structure, which can be done by welding or by threaded connection.
[0034] A set of support rods is evenly distributed along the circumference of the disc structure, positioned near the edge of the disc structure; for example... Figure 1 As shown, a set of support rods consists of five round rods, which evenly fix the lower part of the disc structure, making the structure stable and reliable.
[0035] The lower ends of a set of disc-laying rods are fixed to the upper surface of the disc structure. The set of disc-laying rods are evenly arranged circumferentially around the center position of the support disc. The disc-laying rods are also round rods. The automotive brake disc is placed on a set of disc-laying rods for suspended support, which facilitates assembly operations and provides stable and reliable support.
[0036] The support plate has a threaded hole at the lower end of the plate-laying rod, and the lower end of the plate-laying rod is a threaded section. The plate-laying rod is fixed to the support plate by the threaded structure, which is stable and reliable and easy to install.
[0037] In some embodiments, the top end of the disc release lever is provided with a rubber structure; preferably, the rubber structure is a rubber soft head 29. The rubber soft head at the top end of the disc release lever is made of a flexible material, which forms a flexible contact with the surface of the brake disc, effectively avoiding surface scratches caused by hard contact, protecting the appearance and performance of the brake disc, and reducing the product scrap rate.
[0038] Long-term use will cause wear and tear, and the rubber flexible head needs to be replaced after wear. If the rubber flexible head is not replaced in time, it may cause the brake disc to tilt, affecting the assembly quality. To solve this problem, a rubber sleeve can be used for the rubber flexible head. The rubber sleeve is put on the top of the disc release lever, and the replacement operation is simple.
[0039] The elastic floating structure includes a positioning post and a chuck block. The positioning post has an inner hole with an end opening, forming a circular cavity 6. The chuck block has a spring rod 26 located in the inner hole on one side. The spring rod is a cylindrical rod, and the spring rod and the chuck block are an integral structure.
[0040] An elastic element that engages with the spring rod is provided in the inner hole, and the chuck block is provided with a locking slot for engaging with the outer ring of the brake disc. Preferably, the elastic element is a spring, which is located at the bottom of the inner hole and connected to the inner end of the spring rod, with the spring rod portion located within the inner hole; The chuck block has square or arc-shaped slots, which are designed to fit the shape of the brake disc outer ring. For example, if the brake disc outer ring is arc-shaped, the corresponding chuck block has an arc-shaped slot, ensuring stable and reliable positioning.
[0041] Specifically, the positioning post of the elastic floating structure has a through-hole with one open end, and the cavity is formed into a regular circular cavity structure. A cylindrical spring rod extends integrally from the side wall of the chuck block, and the spring rod extends directly into the circular cavity of the positioning post. The spring rod and the chuck block are integrally injection molded or integrally machined, resulting in high overall structural strength, stable connection, and no risk of loosening during splicing.
[0042] An elastic element is fitted inside the circular inner hole of the positioning post, which can precisely mate with the spring rod. In practical applications, a compression spring is preferred as the elastic element. The spring is fixedly installed at the bottom of the inner hole, and one end of it is tightly connected to the inner end face of the spring rod that extends into the hole, allowing the spring rod to flexibly extend and float along the axis of the inner hole. A special bayonet structure is provided on the outer side of the chuck block. This bayonet can directly engage and fit against the outer ring of the brake disc, realizing quick alignment and assembly of the overall structure with the brake disc.
[0043] The bayonet can be flexibly customized according to the actual shape of the brake disc outer ring. It can be designed as a square slot or made into an arc-shaped slot that fits the curved surface. It is strictly processed to conform to the outline of the brake disc outer ring. When the brake disc outer ring has a curved surface shape, the bayonet is set to an arc-shaped slot to maximize the contact area and greatly improve the tightness and stability of the clamping and positioning. Combined with the elastic buffer and self-adaptive floating ability provided by the internal spring, it can effectively adapt to the assembly gap deviation, making the overall clamping and positioning effect more reliable, and the adaptability and practicality stronger.
[0044] In some embodiments, a groove is provided radially on the support plate, and a slide rod with adjustable position is provided in the groove, with a positioning post disposed on the slide rod. The sliding engagement between the slide rod and the groove makes the adjustment of the chuck block more flexible, adapts to brake discs of different sizes, expands the applicability of the clamp, and improves the versatility and practicality of the clamp.
[0045] Relying on the smooth and reliable sliding fit structure between the slide bar and the slide groove, the radial spacing and placement position of the positioning pins can be quickly changed; the overall adjustment operation is simple and smooth, with sufficient adjustment stroke, and can accurately adapt to a variety of brake disc workpieces with different outer diameters and specifications. It effectively breaks through the limitation of traditional fixtures with single size adaptation, greatly expands the applicable working conditions and application range of tooling fixtures, and meets the usage needs of clamping and positioning different types of brake discs.
[0046] The inner hole of the positioning post is a blind hole with one end open. The bottom of the blind hole of the positioning post is provided with a connecting hole. The post is fixed to the upper part of the slide rod by passing screws through the connecting hole, resulting in a compact structure.
[0047] In some embodiments, the support disc is provided with a synchronous adjustment drive structure for driving a set of elastic floating structure slide rods to move synchronously and adjust; a set of chuck blocks are synchronously adjusted in position to automatically compensate for the small dimensional deviation of the brake disc itself or the slight offset during placement, so as to achieve floating centering and ensure that the brake disc is always in the precise assembly center.
[0048] Optionally, the synchronous adjustment drive structure can use multiple sets of connected bidirectional cylinders; for example, two bidirectional cylinders are used, which are connected to achieve synchronous extension and retraction; the two bidirectional cylinders are arranged in a cross shape at the center of the lower part of the support plate, and the end of each piston rod of the bidirectional cylinder is connected to the lower end of the corresponding slide rod. The bidirectional cylinder drives a set of slide rods to move synchronously, that is, drives a set of elastic floating structures to adjust synchronously.
[0049] Optionally, the synchronous adjustment drive structure adopts a linkage screw transmission structure. A rotatable central adjusting screw is set at the center of the support plate, and multiple linkage rocker arms of equal length are hinged to the outer periphery of the screw. Each rocker arm has a corresponding slide rod hinged to its outer end. Rotating the central adjusting screw will push and pull each slide rod synchronously through the rocker arms, allowing all slide rods to synchronously complete the radial position adjustment along the slide groove.
[0050] Preferred, such as Figure 1 As shown, the synchronous adjustment drive structure includes a rotating gear ring and a motor mounted on a support plate. The motor is equipped with a drive gear that meshes with the rotating gear ring. The support plate is equipped with a lead screw structure for driving the slide bar to slide. The outer end of the lead screw structure is equipped with a transmission gear that cooperates with the rotating gear ring.
[0051] The motor is fixed at the lower part of the support plate, and the motor shaft passes through the support plate. The drive gear 25 is located above the support plate and is fixedly connected to the upper end of the shaft. The drive gear meshes with the rotating gear ring on the support plate, and the motor can drive the rotating gear to rotate. A pair of support vertical plates 30 are provided on the upper surface of the support plate corresponding to the screw structure. The inner support vertical plates can be used to assist in positioning the outer ring of the brake disc.
[0052] The lead screw of the lead screw structure is mounted on a pair of supporting vertical plates and is horizontally arranged radially along the support plate. A sliding block is provided on the lead screw, and the sliding block is guided by a sliding groove. The sliding rod is fixed on the sliding block, making the structure stable and reliable. A transmission gear 22 is provided at the outer end of the lead screw. The rotating gear ring includes a two-ring gear structure. One ring gear structure meshes with the drive gear, and the other ring gear structure meshes with the transmission gear, which is a helical gear. The lead screw structure can drive a set of elastic floating structures to move and adjust their positions synchronously with the corresponding sliding rod. The drive structure and transmission structure are integrated on the support plate, making the structure compact.
[0053] In some embodiments, the support plate is provided with a brake disc inner ring positioning structure for positioning the inner ring of the brake disc, and the brake disc inner ring positioning structure is located inside a set of disc release rods; the brake disc inner ring positioning structure and the elastic floating positioning structure for positioning the outer ring of the brake disc work together to form a double centering positioning structure, which significantly improves the centering stability and accuracy during brake disc assembly, while simplifying the operation process and improving assembly efficiency.
[0054] Optionally, the brake disc inner ring positioning structure includes a positioning cylinder and a set of arc-shaped locking blocks 16 for positioning the brake disc inner ring. The positioning cylinder has a set of slots along its circumferential direction, and the positioning cylinder and the slots form a chuck cavity 3. The inner side of the arc-shaped locking blocks is provided with inclined plates 15 located in the corresponding slots. The positioning cylinder is provided with a central drive structure for driving the inclined plates of the set of arc-shaped locking blocks to move synchronously. The central drive structure can drive the set of arc-shaped locking blocks to expand or retract synchronously, thereby achieving synchronous positioning of the brake disc inner ring.
[0055] The central drive structure includes a wedge-shaped column 11 and a turntable 17 located on the top of the positioning cylinder. The outer edge of the wedge-shaped column cooperates with the inclined plate. The lower part of the turntable is provided with a threaded vertical rod 10 that cooperates with the wedge-shaped column. A rotating handle 18 is provided above the turntable. By pushing the turntable to rotate, the wedge-shaped column can be driven to move up and down, thereby driving a set of arc-shaped blocks to move synchronously, so as to achieve positioning of the inner ring of the brake disc.
[0056] In some embodiments, the center drive structure may be a cylinder drive structure, which is vertically fixed at the center of the support plate. The lower end of the wedge-shaped column is connected to the upper end of the cylinder push rod, and a set of arc-shaped blocks are driven to move synchronously by the cylinder.
[0057] This invention provides a positioning method for positioning a brake disc using a brake disc assembly positioning fixture, comprising the following steps: Place the brake disc to be assembled on a set of disc release levers; The elastic floating structure is pushed to move towards the release rod, and the chuck block of the elastic floating structure is locked on the outer ring of the brake disc for positioning. The spring floating action in the elastic floating structure automatically compensates for the positional deviation of the brake disc, achieving floating centering. The inner ring positioning structure of the brake disc, located at the center of the support disc, positions the inner ring of the brake disc.
[0058] The brake disc assembly positioning fixture and its positioning method of this invention are reasonably designed. They automatically compensate for the positional deviation of the brake disc through an elastic floating structure, achieve precise centering, effectively avoid assembly wobble, and ensure the assembly accuracy of the brake disc. In addition, the fixture adopts dual centering and positioning, which simplifies the operation process and improves centering stability. At the same time, it protects the surface of the brake disc through flexible contact, taking into account both assembly efficiency and product quality.
[0059] For example, a floating centering fixture for preventing brake disc assembly sway includes a support plate. A plurality of disc-releasing rods are fixedly connected to the upper surface of the support plate. A chuck cavity is fixedly connected to the support plate between the plurality of disc-releasing rods. Sliding grooves are symmetrically formed on the upper surface of the support plate. Sliding rods are slidably connected inside the sliding grooves. Supporting vertical plates are fixedly connected to the opposite side of the sliding rods on the upper surface of the support plate. Circular cavities are fixedly connected to the ends of the sliding rods. Chuck blocks are fixedly connected to the front surfaces of the circular cavities. A locking slot 8 is formed on the outer side wall of the chuck blocks.
[0060] Furthermore, the upper surface of the chuck cavity is provided with a rotating opening 9, and the lower inner surface of the rotating opening is rotatably connected to a threaded vertical rod 10. The outer wall of the threaded vertical rod is threadedly connected to a wedge-shaped column 11. The lower surface of the wedge-shaped column is provided with a limiting opening 12. The limiting opening is slidably connected to a limiting rod 12. The inner side wall of the rotating opening is symmetrically provided with extension openings 14. The extension opening is slidably connected to an inclined plate 15. The ends of the inclined plates are all fixedly connected to arc-shaped locking blocks 16. The top end of the threaded vertical rod is fixedly connected to a turntable. The lower surface of the turntable is rotatably connected to the upper surface of the chuck cavity. The upper surface of the turntable is fixedly connected to a rotating handle.
[0061] Furthermore, a gear ring structure is rotatably connected to the upper surface of the support plate. The upper surface of the gear ring structure has multiple tooth grooves, and the front surface of the slide groove has a threaded hole. A threaded long rod is threadedly connected inside the threaded hole, and a transmission gear is fixedly connected to the rear end of each threaded long rod. The transmission gear is meshed with the tooth groove.
[0062] A motor is fixedly connected to the lower surface of the support plate. The output end of the motor extends through to the top of the support plate and is fixedly connected to a disc. Multiple transmission teeth are fixedly connected to the lower surface of the disc, and the transmission teeth mesh with the tooth grooves on the gear ring structure.
[0063] A spring rod is slidably connected inside the circular cavity, and a spring is fixedly connected between the end of the spring rod and the inside of the circular cavity.
[0064] Furthermore, support rods are fixedly connected to the lower surface of the support disc, and these support rods are height-adjustable outriggers. Rubber tips are fixedly connected to the top of the release rods to prevent them from scratching the brake disc surface.
[0065] This invention effectively solves the technical problems of low centering accuracy and easy assembly misalignment in existing fixtures by setting a floating centering structure. The spring rod inside the cavity works in conjunction with a spring to form an elastic floating mechanism. When the chuck block is in contact with the edge of the brake disc, the elastic force of the spring can drive the spring rod to extend and retract flexibly, automatically compensating for minor dimensional deviations of the brake disc or slight offsets during placement, achieving floating centering and ensuring that the brake disc is always in a precise assembly center, fundamentally avoiding brake disc assembly misalignment. Simultaneously, the rubber soft head at the top of the disc release rod is made of flexible material, forming a flexible contact with the brake disc surface, effectively avoiding surface scratches caused by hard contact, protecting the appearance and performance of the brake disc, and reducing product scrap rate. Furthermore, the sliding cooperation between the slide rod and the slide groove makes the adjustment of the chuck block more flexible, adapting to brake discs of different sizes, expanding the applicability of the fixture, and improving its versatility and practicality.
[0066] This invention employs a dual centering and positioning structure, which significantly improves the centering stability and accuracy during brake disc assembly, while simplifying the operation process and increasing assembly efficiency. The arc-shaped locking block can perform initial centering of the inner ring of the brake disc, and the locking block and the supporting vertical plate cooperate to perform secondary centering of the outer ring of the brake disc. The dual positioning of the inner and outer rings works together to effectively prevent loosening or displacement during brake disc assembly, further ensuring assembly accuracy.
[0067] The motor-driven transmission structure replaces the traditional manual adjustment. The motor drives the disc, transmission gears, gear ring, and transmission gears to work together, achieving automatic movement of the slide bar. This eliminates the need for manual pushing of the slide bar, reducing human error and significantly improving ease of operation and assembly efficiency, making it suitable for assembling batches of brake discs. Furthermore, the adjustment method using the threaded vertical rod and wedge-shaped column allows for precise control of the arc-shaped locking block's movement distance, further improving centering accuracy. The overall structural design is reasonable, with all components working in tandem to balance assembly accuracy, efficiency, and product protection.
[0068] like Figures 1 to 5 As shown, a preferred embodiment of the present invention is as follows: This application provides a floating centering fixture to prevent brake disc assembly from swaying, including a support plate 1, which is a disc, and a plurality of disc-releasing rods 2 are fixedly connected to the upper surface of the support plate 1. The disc-releasing rods are round rods, and the plurality of disc-releasing rods are evenly distributed and fixed around the center position of the disc, so as to provide stable and reliable braking for the brake disc. A chuck cavity 3 is fixedly connected to the support plate 1 between multiple disc release rods 2. The chuck cavity 3 is set at the center position of the disc. A set of arc-shaped locking blocks that can expand or retract synchronously are provided on the outer edge of the chuck cavity. The inner ring of the brake disc is synchronously positioned by the set of arc-shaped locking blocks. Furthermore, a rubber layer is provided on the outer side of the arc-shaped locking blocks to avoid damage to the inner ring of the brake disc and to avoid the problem of inaccurate positioning caused by the dimensional deviation of the inner ring of the brake disc.
[0069] The upper surface of the support disc 1 is symmetrically provided with sliding grooves 4. Sliding rods 5 are slidably connected inside the sliding grooves 4. Supporting vertical plates 30 are fixedly connected to the opposite sides of the sliding rods 5 on the upper surface of the support disc 1. Cavities 6 are fixedly connected to the ends of the sliding rods 5. Chuck blocks 7 are fixedly connected to the front surface of the cavities 6. Chess slots 8 are provided on the outer side walls of the chuck blocks 7. Spring rods 26 are slidably connected inside the cavities 6. Springs 27 are fixedly connected between the end of the spring rods 26 and the inside of the cavities 6. The above structure forms an overall elastic floating positioning structure. The outer ring of the brake disc is synchronously centered and positioned by a set of elastic floating positioning structures, which automatically compensates for the small dimensional deviations of the brake disc itself or the slight offset during placement, realizes floating centering, and ensures that the brake disc is always in the precise assembly center, fundamentally avoiding the occurrence of brake disc assembly wobble.
[0070] Support rods 28 are fixedly connected to the lower surface of the support disc 1, and rubber soft heads 29 are fixedly connected to the top of the release rod 2. The rubber soft heads contact the brake disc, avoiding hard contact between the top of the release rod and the surface of the brake disc, thus effectively protecting the surface of the brake disc.
[0071] When the floating centering fixture for preventing brake disc assembly misalignment is in operation, it first places the entire fixture stably on the assembly workbench via the support rod 28 fixedly connected to the lower surface of the support disc 1, ensuring that the support disc 1 is in a horizontal state and providing a stable foundation for subsequent assembly centering. Next, the brake disc to be assembled is placed on the tops of multiple disc-placing rods 2 on the upper surface of the support disc 1. The rubber soft head 29 at the top of the disc-placing rod 2 avoids hard contact with the surface of the brake disc, preventing scratches on the surface of the brake disc, and at the same time provides initial support and positioning for the brake disc. Then, the slide rod 5 is pushed, causing the slide rod 5 to slide within the symmetrically opened slide grooves 4 on the upper surface of the support disc 1. The slide rod 5 drives the support vertical plate 30 fixedly connected to its opposite side to move synchronously. At the same time, the circular cavity 6 fixedly connected to the end of the slide rod 5 and the chuck block 7 on the front surface of the circular cavity 6 also move closer to the brake disc until the chuck block... 7. The clasp 8 on the outer wall fits against the edge of the brake disc; at this time, the spring rod 26, which is slidably connected inside the cavity 6, extends and retracts under the elastic force of the spring 27. Utilizing the buffering and floating effect of the spring 27, it automatically compensates for any slight positional deviations that may exist in the brake disc, achieving floating centering and preventing assembly wobble of the brake disc. At the same time, the supporting vertical plate 30 further assists in limiting the brake disc, ensuring that the brake disc is in a precise assembly center. After the brake disc is centered and clamped by the clasp block 7 and the supporting vertical plate 30, the subsequent assembly operation of the brake disc can be carried out. After the assembly is completed, the slide rod 5 is pushed in the opposite direction to separate the clasp block 7 from the brake disc. The spring 27 drives the spring rod 26 to reset, and the assembled brake disc is taken out, completing one assembly operation. The entire process relies on the synergistic effect of each component to effectively prevent brake disc assembly wobble and ensure assembly accuracy.
[0072] In this embodiment, a rotating opening 9 is provided on the upper surface of the chuck cavity 3. A threaded vertical rod 10 is rotatably connected to the lower inner surface of the rotating opening 9. A wedge-shaped column 11 is threadedly connected to the outer wall of the threaded vertical rod 10. A limiting opening 12 is provided on the lower surface of the wedge-shaped column 11. A limiting rod 13 is slidably connected inside the limiting opening 12. An extension opening 14 is symmetrically provided on the inner side wall of the rotating opening 9. An inclined plate 15 is slidably connected inside the extension opening 14. An arc-shaped locking block 16 is fixedly connected to the end of each inclined plate 15. A turntable 17 is fixedly connected to the top of the threaded vertical rod 10. The lower surface of the turntable 17 is rotatably connected to the upper surface of the chuck cavity 3. A rotating handle 18 is fixedly connected. A gear ring 19 is rotatably connected to the upper surface of the support plate 1. Multiple tooth grooves 31 are opened on the upper surface of the gear ring 19. A threaded hole 20 is opened on the front surface of the slide groove 4. A threaded long rod 21 is threadedly connected inside the threaded hole 20. A transmission gear 22 is fixedly connected to the rear end of the threaded long rod 21. The transmission gear 22 is meshed with the tooth grooves 31. A motor 23 is fixedly connected to the lower surface of the support plate 1. The output end of the motor 23 extends through to the top of the support plate 1 and is fixedly connected to a disc 24. A drive gear 25 is fixedly connected to the lower surface of the disc 24. The drive gear is meshed with the corresponding tooth groove.
[0073] The fixture is placed stably on the worktable using the support rod 28 on the lower surface of the support plate 1, ensuring that the support plate 1 is horizontal. Then, the brake disc is placed on the top of the disc release rod 2, and the rubber soft head 29 protects the surface of the brake disc and provides initial positioning. Subsequently, the rotating handle 18 on the turntable 17 is rotated, which drives the threaded vertical rod 10 in the rotating opening 9 of the chuck cavity 3 to rotate. The wedge-shaped column 11 moves up and down under the limit of the limit rod 13 in the limit opening 12, pushing the inclined plate 15 in the extension opening 14 of the rotating opening 9 to slide, so that the arc-shaped locking block 16 at the end of the inclined plate 15 fits against the inner ring of the brake disc, achieving initial centering. Next, the motor 23 on the lower surface of the support plate 1 is started. Its output end drives the disc 24 and the drive gear 25 to rotate. The drive gear 25 meshes with the corresponding tooth groove 31 on the gear ring 19, driving the gear ring structure to rotate. In turn, the tooth groove drives the transmission gear 22 to rotate, causing the threaded rod 21 to move in the threaded hole 20 on the front surface of the slide groove 4. This pushes the slide rod 5 to slide along the slide groove 4, causing the support vertical plate 30, the cavity 6, and the chuck block 7 to move closer to the brake disc, and the chuck 8 to fit against the edge of the brake disc. The spring rod 26 in the cavity 6 extends and retracts under the action of the spring 27 to compensate for positional deviations and achieve precise floating centering. After assembly, the motor is turned off, the handle is turned in the opposite direction, all components are reset, the brake disc is removed, and one workflow is completed.
[0074] The advantages of this floating centering fixture lie in its precise centering and significant anti-deviation effect, fundamentally solving the problem of brake disc assembly misalignment. The fixture employs a dual positioning structure combining inner ring synchronous positioning and outer ring floating centering. The arc-shaped locking block in the chuck cavity enables synchronous tensioning and positioning of the inner ring of the brake disc, while the elastic floating positioning structure of the outer ring automatically compensates for minor dimensional deviations of the brake disc itself and slight offsets during placement through the synergistic action of springs and spring rods. This ensures that the brake disc is always in the precise assembly center, effectively avoiding assembly misalignment caused by inaccurate positioning and guaranteeing the assembly accuracy of the brake disc.
[0075] The clamp structure is designed for both protection and adaptability, providing comprehensive protection for the brake disc from damage and accommodating brake discs with various dimensional deviations. Rubber layers are provided at the chuck jaws and on the outer side of the curved chuck block to prevent scratches and pressure damage to the outer and inner rings of the brake disc. The rubber soft tip at the top of the release lever prevents hard contact between the release lever and the brake disc surface, effectively protecting the surface finish. Simultaneously, the elastic floating structure and the synchronous tensioning blocks work together to accommodate slight dimensional deviations in the inner and outer rings of the brake disc, eliminating the need for frequent clamp adjustments for different brake disc sizes. This improves the clamp's versatility and adaptability, and reduces wear and tear during assembly.
[0076] The fixture is easy to operate and highly automated, significantly improving brake disc assembly efficiency. The device features both automatic drive and manual adjustment control. The motor, via gear transmission, enables synchronous movement of the sliding rod, eliminating the need for manual pushing of the rod for positioning, saving labor costs and ensuring more precise positioning. Manually turning the handle controls the opening and closing of the arc-shaped locking block, facilitating quick placement and removal of the brake disc. The entire assembly process is seamless and smooth, with all components working in tandem. From fixture positioning and brake disc placement to centering, clamping, and final assembly, the operation is simple, effectively shortening the assembly cycle and improving the efficiency and consistency of batch assembly.
[0077] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.
[0078] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.
Claims
1. A brake disc assembly and positioning fixture, characterized in that: include: Support plate, the support plate is equipped with a set of release rods for supporting the brake disc; A positioning mechanism is a set of elastic floating structures used to elastically position the outer ring of the brake disc, the set of elastic floating structures being evenly distributed circumferentially on the support disc.
2. The brake disc assembly positioning fixture as described in claim 1, characterized in that: The top of the plate-laying rod is equipped with a rubber structure.
3. The brake disc assembly positioning fixture as described in claim 1, characterized in that: The elastic floating structure includes a positioning post and a chuck block. The positioning post has an inner hole with an end opening. The chuck block has a spring rod located in the inner hole on one side. The inner hole has an elastic element that cooperates with the spring rod. The chuck block has a locking slot for locking onto the outer ring of the brake disc.
4. The brake disc assembly positioning fixture as described in claim 3, characterized in that: The support plate has a sliding groove along its radial direction, and a sliding rod with adjustable position is provided in the sliding groove. The positioning post is located on the sliding rod.
5. The brake disc assembly positioning fixture as described in claim 4, characterized in that: The support plate is equipped with a synchronous adjustment drive structure for driving the slide rods of a set of elastic floating structures to move and adjust synchronously.
6. The brake disc assembly positioning fixture as described in claim 5, characterized in that: The synchronous adjustment drive structure includes a rotating gear ring and a motor mounted on a support plate. The motor is equipped with a drive gear that meshes with the rotating gear ring. The support plate is equipped with a lead screw structure for driving the slide bar to slide. The outer end of the lead screw structure is equipped with a transmission gear that cooperates with the rotating gear ring.
7. The brake disc assembly positioning fixture as described in claim 1, characterized in that: The support plate is provided with a brake disc inner ring positioning structure for positioning the inner ring of the brake disc, which is located inside a set of disc release rods.
8. The brake disc assembly positioning fixture as described in claim 7, characterized in that: The brake disc inner ring positioning structure includes a positioning cylinder and a set of arc-shaped blocks for positioning the inner ring of the brake disc. The positioning cylinder has a set of slots along its circumferential direction. The inner side of the arc-shaped blocks has inclined plates located in the corresponding slots. The positioning cylinder has a central drive structure for driving the inclined plates of the set of arc-shaped blocks to move synchronously.
9. The brake disc assembly positioning fixture as described in claim 8, characterized in that: The central drive structure includes a wedge-shaped column and a turntable located at the top of the positioning cylinder. The outer edge of the wedge-shaped column engages with an inclined plate, and the lower part of the turntable is provided with a threaded rod that engages with the wedge-shaped column.
10. A positioning method for positioning a brake disc using a brake disc assembly positioning fixture as described in any one of claims 1 to 9, characterized in that: The positioning method includes the following steps: Place the brake disc to be assembled on a set of disc release levers; The elastic floating structure is pushed to move towards the release rod, and the chuck block of the elastic floating structure is locked on the outer ring of the brake disc for positioning. The spring floating action in the elastic floating structure automatically compensates for the positional deviation of the brake disc, achieving floating centering. The inner ring positioning structure of the brake disc, located at the center of the support disc, positions the inner ring of the brake disc.