Automobile part polishing device

Abstract

The utility model belongs to the technical field of automobile parts processing, especially relates to automobile parts polishing and grinding tooling, the utility model provides an automobile parts polishing and grinding tooling, include: frame, its top is provided with a pair of tray, operating table is set between two trays, be provided with a plurality of clamping structure on the operating table, the clamping structure includes the slide that sets up on the operating table, two sliding blocks are oppositely provided on the slide, and the distance between two sliding blocks is adjustable, every sliding block is provided with the adjustment platform, a plurality of equal interval arrangement's adjustment hole is seted up on the adjustment platform, retractable jacks are seted up in the adjustment hole, the utility model sets up clamping structure, and the whole piece shape automobile parts high -efficient, flexible, self -adaptation's steady clamping is realized, solves the technical problems such as insufficient clamping area, easy deformation, easy displacement, and the operation is complicated, and the processing quality, production efficiency and equipment utilization are improved significantly.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing technology, specifically relating to polishing fixtures for automotive parts, and particularly to polishing fixtures for automotive parts. Background Technology

[0002] In the automotive manufacturing and repair field, the surfaces of many key components (such as brake pads, transmission system components, and internal engine components) need to be polished and coated to improve their wear resistance, corrosion resistance, and service life. The standard processing usually involves precision grinding of the component substrate, followed by spraying a high-performance wear-resistant coating on its surface.

[0003] In practice, especially for thin, complex, or soft sheet-like or plate-like automotive parts (such as friction plates, gaskets, or certain stamped parts), existing clamping and fixing methods face significant challenges. To ensure uniform coating and prevent localized peeling during subsequent use, the coating area needs to cover the main working surfaces of the parts as much as possible. However, this results in a very limited area of ​​non-coated area available for clamping.

[0004] Currently, the industry generally adopts a multi-point clamping solution, which uses a large number of independent clamping heads to fix the parts from the edges to distribute the clamping force. Although this method solves the problem of full coverage spraying and preventing workpiece deformation to a certain extent, it is cumbersome to operate, inefficient, and the uniformity of clamping force is difficult to guarantee. It is easy for the workpiece to shift or vibrate during polishing or spraying due to the loosening of individual clamping points, which affects the processing quality.

[0005] Therefore, how to avoid deformation, displacement or coating damage of sheet or plate-shaped parts due to uneven force or insufficient area during clamping is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one polishing fixture for automotive parts to solve the technical problem of deformation, displacement, or coating damage caused by uneven force or insufficient area when clamping sheet-like or plate-like parts.

[0008] In a first aspect, embodiments of this disclosure provide a polishing fixture for automotive parts, comprising: a frame with a pair of trays on its top; an operating table disposed between the two trays, the operating table having a plurality of clamping structures; each clamping structure including a slide on the operating table, the slide having two sliders disposed opposite each other, the distance between the two sliders being adjustable; each slider having an adjustment platform, the adjustment platform having a plurality of equally spaced adjustment holes, the adjustment holes having retractable push rods; wherein, when a sheet is configured to be located between the two adjustment platforms, the two sets of push rods are adapted to elastically extend and retract according to the outer contour of the sheet, so as to flexibly and adaptively clamp the sheet.

[0009] In one optional embodiment, a spring cylinder is fitted onto one end of the push rod, with one end of the spring cylinder connected to an adjustment hole and the other end connected to the outer periphery of the push rod.

[0010] In one alternative embodiment, the other end of the push rod is provided with an elastic sleeve, which is rotatably connected to the end of the push rod by a threaded connection.

[0011] In one optional embodiment, the clamping surface of the elastic sleeve is provided with a groove for fitting and clamping the edge of the sheet; the cross-sectional shape of the groove is one of V-shape, U-shape or rectangle.

[0012] In one optional embodiment, the side wall or legs of the frame are provided with multiple sets of angle adjustment holes of different heights; the tray is provided with corresponding positioning holes; the polishing fixture further includes a screw; wherein the screw is adapted to pass through the angle adjustment holes and positioning holes in sequence and be locked with nuts, thereby fixing the tray and the operating table at different tilt angles.

[0013] Secondly, this disclosure also provides a polishing fixture for automotive parts, comprising: a frame with a pair of trays on its top, wherein multiple sets of angle-adjusting holes of different heights are provided on the side walls or legs of the frame, and corresponding positioning holes are provided on the trays; an operating table disposed between the two trays, wherein several clamping structures are provided on the operating table; and a screw adapted to pass through the angle-adjusting holes and positioning holes in sequence and be locked by a nut, thereby fixing the trays and the operating table at different tilt angles.

[0014] In one optional embodiment, the clamping structure includes a slide on an operating table, on which two sliders are disposed opposite each other, and the distance between the two sliders is adjustable; each slider is provided with an adjustment platform, and the adjustment platform has a plurality of equally spaced adjustment holes, and a retractable push rod is provided in the adjustment holes; wherein, when the sheet is configured to be located between the two adjustment platforms, the two sets of push rods are adapted to elastically extend and retract according to the outer contour of the sheet, so as to flexibly and adaptively clamp the sheet.

[0015] In one optional embodiment, a spring cylinder is fitted onto one end of the push rod, with one end of the spring cylinder connected to an adjustment hole and the other end connected to the outer periphery of the push rod.

[0016] In one alternative embodiment, the other end of the push rod is provided with an elastic sleeve, which is rotatably connected to the end of the push rod by a threaded connection.

[0017] In one optional embodiment, the clamping surface of the elastic sleeve is provided with a groove for fitting and clamping the edge of the sheet; the cross-sectional shape of the groove is one of V-shape, U-shape or rectangle.

[0018] The beneficial effects of this utility model are that it provides a polishing tool for automotive parts. By setting a clamping structure, it achieves efficient, flexible, and self-adaptive stable clamping of sheet-like automotive parts, solving technical problems such as insufficient clamping area, easy deformation, easy displacement, and cumbersome operation. It significantly improves processing quality, production efficiency and equipment utilization, while reducing workpiece scrap rate and tool maintenance costs.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A perspective view of a polishing fixture for automotive parts provided in an embodiment of this disclosure; Figure 2 A perspective view of the clamping structure provided in the embodiments of this disclosure; Figure 3 A perspective view of the top rod provided in an embodiment of this disclosure.

[0023] In the picture: 1. Frame; 11. Angle adjustment hole; 2. Tray; 21. Positioning holes; 3. Control panel; 4. Clamping structure; 41. Slide block; 42. Slider; 43. Adjusting platform; 431. Adjusting hole; 44. Push rod; 441. Spring sleeve; 45. Elastic sleeve; 451. Groove; 5. Screw. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed shortcomings in existing technologies: for thin, complex, or soft sheet-like or plate-like automotive parts (such as friction plates, gaskets, or certain stamped parts), current clamping and fixing methods face significant challenges. To ensure uniform coating and prevent localized peeling during subsequent use, the coating area needs to cover the main working surfaces of the parts as much as possible; however, this results in a very limited area of ​​non-coated area available for clamping.

[0030] Currently, the industry generally adopts a multi-point clamping solution, which uses a large number of independent clamping heads to fix the parts from the edges to distribute the clamping force. Although this method solves the problem of full coverage spraying and preventing workpiece deformation to a certain extent, it is cumbersome to operate, inefficient, and the uniformity of clamping force is difficult to guarantee. It is easy for the workpiece to shift or vibrate during polishing or spraying due to the loosening of individual clamping points, which affects the processing quality.

[0031] Therefore, how to avoid deformation, displacement or coating damage of sheet or plate-shaped parts due to uneven force or insufficient area during clamping is a technical problem that urgently needs to be solved in this field.

[0032] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figures 1 to 3 As shown, some embodiments provide a polishing fixture for automotive parts, including: a frame 1 with a pair of trays 2 on its top; the frame 1 and the trays 2 are the basic support and load-bearing platform features of the equipment itself: the frame 1 is the supporting skeleton of the entire equipment, and a pair of trays 2 are provided on its top; the pair of trays 2 are symmetrically arranged to support and connect the subsequent operating table 3.

[0036] The frame 1 provides the rigidity and stability required by the equipment, ensuring that the processing accuracy will not be affected by vibration during polishing operations; the symmetrically arranged pair of trays 2 form a stable support reference surface, ensuring that the operating table 3 set on it is subjected to balanced force, avoiding stress concentration or slight deformation of the operating table 3 caused by unstable support, and providing a solid and reliable foundation for the entire clamping process.

[0037] The operating table 3 is set between two trays 2, and several clamping structures 4 are set on the operating table 3; the operating table 3 and several clamping structures 4 are the core features of the modular and distributed clamping concept. Specifically, the operating table 3 is set between two trays 2, forming a working plane for direct workpiece clamping; its core lies in the several clamping structures 4 set on the operating table 3.

[0038] The operating table 3 and several clamping structures 4 are the key design features that distinguish this equipment from traditional fixtures. The term "several" means that the clamping structures 4 are modular and arrayed. This layout allows for two efficient operating modes: 1. Fixing multiple workpieces at the same time, which is suitable for batch processing of small parts and greatly improves production efficiency; 2. Distributed multi-point clamping of a large workpiece.

[0039] By replacing the few concentrated clamping points of traditional fixtures with dozens or even hundreds of evenly distributed flexible clamping points, the clamping force can be evenly distributed to a wider area of ​​the workpiece edge. This fundamentally solves the problems of "insufficient clamping area" and "uneven force and easy deformation". The actual clamping force required for each clamping point is greatly reduced, thus ensuring firm clamping while perfectly protecting thin-walled or soft workpieces.

[0040] The clamping structure 4 includes a slide 41 mounted on the operating table 3. Two sliders 42 are arranged opposite each other on the slide 41, and the distance between the two sliders 42 is adjustable. The slide 41 and the adjustable sliders 42: First-stage coarse adjustment - quick adaptation to the workpiece width feature itself: Each clamping structure 4 includes a slide 41 fixed on the operating table 3. The slide 41 is equipped with a pair of relatively movable sliders 42, and the distance between the two sliders 42 is adjustable.

[0041] The slider 42 is the first-level adjustment mechanism of the clamping system - coarse width adjustment; the slider 42 is usually moved and fixed by a lead screw, guide rail or simple screw locking mechanism; the operator can quickly adjust the distance between the two sliders 42 on the slide block 41 according to the basic width of the workpiece to be processed, so that it roughly adapts to the size of the workpiece; this design greatly enhances the versatility of the equipment, enabling a set of tooling to flexibly cope with parts of different specifications, reducing the cost and time of needing to replace special fixtures due to changes in workpiece size.

[0042] Each slider 42 is provided with an adjustment platform 43, and the adjustment platform 43 has multiple equally spaced adjustment holes 431. A telescopic push rod 44 is provided in the adjustment hole 431. When the sheet is configured to be located between two adjustment platforms 43, the two sets of push rods 44 are adapted to elastically extend and retract according to the outer contour of the sheet to flexibly and adaptively clamp the sheet.

[0043] Adjustment table 43 and equally spaced adjustment holes 431: Second-stage fine adjustment - pre-adaptation to the workpiece contour features itself. Specifically, an adjustment table 43 is provided on each slider 42; the adjustment table 43 has multiple equally spaced adjustment holes 431.

[0044] These equally spaced adjustment holes 431 form a programmable matrix. When dealing with workpieces with complex curved edges, the operator can selectively install push rod 44 units in the adjustment holes 431 at different heights according to the approximate shape of the workpiece contour. This allows the initial distribution of the two rows of push rods 44 to better "pre-match" the contour shape of the workpiece, laying a good foundation for the next step of automatic fine adjustment, reducing the extension stroke required by the push rods 44, and making the clamping process more efficient and precise.

[0045] One end of the push rod 44 is fitted with a spring sleeve 441. One end of the spring sleeve 441 is connected to the adjustment hole 431, and the other end is connected to the outer periphery of the push rod 44. The telescopic push rod 44 and the flexible adaptive clamping principle: the third-level fine adjustment - intelligent fitting and force dispersion characteristics itself. Specifically, the adjustment hole 431 is provided with a telescopic push rod 44. When the sheet workpiece is placed between the two adjustment tables 43, the two sets of push rods 44 can independently elastically extend and retract according to the outer contour of the sheet, thereby realizing flexible adaptive clamping. The retractable push rod 44 is the most innovative third-level adjustment mechanism of the entire device – automatic fine-tuning. It directly solves the problem of "difficulty in ensuring uniform clamping force" in the background technology. The effectiveness of this mechanism depends on the subsequent spring cylinder 441, but its principle is realized here: each push rod 44 is an independent execution unit. When the workpiece is placed, the push rod 44 that contacts the protruding part of the workpiece edge will be pressed back, while the push rod 44 in the concave part will remain extended. Ultimately, each push rod 44 achieves force balance with the contour point of the workpiece it contacts. Beneficial effects: This design allows the fixture to actively adapt to the workpiece, rather than requiring the workpiece to passively adapt to the fixture. It achieves high-precision three-dimensional fit for irregular contours, ensures uniform distribution of clamping force along the edge of the workpiece, completely eliminates local stress concentration, and perfectly prevents workpiece deformation. At the same time, this "full embrace" clamping provides a large contact area and stability, effectively resisting vibration and displacement during processing.

[0046] Spring sleeve 441: The force source and core feature of flexible clamping: A spring sleeve 441 is sleeved on one end of the push rod 44; one end of the spring sleeve 441 is connected (fixed) to the adjustment hole 431, and the other end is connected to the outer periphery of the push rod 44.

[0047] The spring sleeve 441 is the core component that enables the push rod 44 to achieve its elastic telescopic function. It typically contains a pre-compressed spring. This design achieves the following key functions: providing controllable elastic force: the spring provides a continuous and preset clamping force to each push rod 44. This force is gentle and uniform, avoiding rigid impact; allowing for slight compensation: during processing, the workpiece may undergo slight deformation due to thermal expansion and contraction or vibration. The elasticity of the spring sleeve 441 allows the push rod 44 to make slight compensation accordingly, maintaining a constant contact pressure and avoiding excessive clamping force or failure; achieving true self-adaptation: it is the mechanical basis for the push rod 44 to independently extend and retract according to the contour.

[0048] The other end of the push rod 44 is provided with an elastic sleeve 45, which is rotatably connected to the end of the push rod 44 by a threaded connection; the threaded elastic sleeve 45: the optimized and maintainable features of the clamping interface itself: the other end of the push rod 44 is provided with an elastic sleeve 45, which is rotatably connected to the end of the push rod 44 by a threaded connection; specifically, the elastic sleeve 45 is a component that directly contacts the workpiece, and its design is crucial; material: made of wear-resistant and high-friction elastic materials such as polyurethane and rubber.

[0049] It should be further explained that, firstly, its elasticity provides secondary cushioning, further protecting the workpiece surface; secondly, the high coefficient of friction ensures the reliability of clamping and prevents workpiece slippage; threaded connection: this design brings great convenience of maintenance; the elastic sleeve 45 is a vulnerable part and will wear out after long-term use. The threaded connection allows for quick and low-cost replacement of a single sleeve without replacing the entire push rod 44 unit, significantly reducing equipment maintenance costs and time. In addition, the tilt direction of its groove 45 can be adjusted by rotation.

[0050] The clamping surface of the elastic sleeve 45 is provided with a groove 451 for fitting and clamping the edge of the sheet; the cross-sectional shape of the groove 451 is one of V-shape, U-shape or rectangle; the clamping surface with groove 451 is the ultimate guarantee feature for anti-slip and stability: the clamping surface of the elastic sleeve 45 is provided with a groove 451, the cross-sectional shape of which is one of V-shape, U-shape or rectangle.

[0051] Specifically, groove 451 is a key design feature to prevent workpiece displacement or vibration during machining (especially when subjected to tangential forces). The function of groove 451 is to transform point contact or small-area planar contact into line contact or optimized surface contact. V-groove: The most versatile, it can adaptively clamp the edges of workpieces of different thicknesses, forming two line contacts and providing stable bidirectional locking. U-groove: Larger contact area and lower pressure, it is very friendly to soft materials or workpieces with extremely high surface finish requirements, and can effectively prevent indentation. Rectangular groove: Provides the maximum contact surface and support for regular rectangular workpieces, with excellent stability. In summary, regardless of the shape, groove 451 can "bite" the edge of the workpiece like a "clamp," greatly enhancing the ability to resist horizontal forces (such as the tangential direction of the polishing head), ensuring machining accuracy.

[0052] Multiple sets of angle adjustment holes 11 with different heights are provided on the side wall or legs of the frame 1; corresponding positioning holes 21 are provided on the tray 2; the polishing fixture also includes a screw 5; wherein the screw 5 is adapted to pass through the adjustment hole 431 and the positioning hole 21 in sequence, and is locked by a nut, thereby fixing the tray 2 and the operating table 3 at different tilt angles.

[0053] Inclination adjustment mechanism (adjustment hole 11, positioning hole 21, screw 5): to achieve the best process angle features: multiple sets of adjustment holes 11 of different heights are opened on the side wall or support legs of the frame 1; positioning holes 21 are correspondingly provided on the tray 2; the equipment is also equipped with a screw 5, which can pass through the adjustment hole 11 and the positioning hole 21 in sequence and be locked with a nut.

[0054] The tilt adjustment mechanism greatly expands the equipment's process adaptability; by selecting and fixing the tilt holes 11 at different heights, the tilt angle of the entire operating table 3 (i.e., the workpiece) relative to the processing tool (polishing head or spray gun) can be changed; ensuring that the processed surface is always at the optimal angle, for example, making the surface perpendicular to the spray gun axis during spraying to obtain a uniform coating thickness; and obtaining the optimal contact angle during polishing; this function directly improves the uniformity and consistency of processing quality and is a key link in ensuring the performance of the final product.

[0055] Some embodiments provide a polishing fixture for automotive parts, including: a frame 1 with a pair of trays 2 on its top, and multiple sets of angle adjustment holes 11 of different heights opened on the side wall or legs of the frame 1, and corresponding positioning holes 21 on the trays 2; an operating table 3 disposed between the two trays 2, and a plurality of clamping structures 4 on the operating table 3; and a screw 5 adapted to pass through the adjustment hole 431 and the positioning hole 21 in sequence, and to be locked by a nut, thereby fixing the trays 2 and the operating table 3 at different tilt angles.

[0056] The clamping structure 4 includes a slide 41 mounted on the operating table 3. Two sliders 42 are arranged opposite each other on the slide 41, and the distance between the two sliders 42 is adjustable. Each slider 42 is provided with an adjustment table 43, and the adjustment table 43 has multiple equally spaced adjustment holes 431. A telescopic push rod 44 is provided in the adjustment hole 431. When the sheet is configured to be located between the two adjustment tables 43, the two sets of push rods 44 are adapted to elastically extend and retract according to the outer contour of the sheet to flexibly and adaptively clamp the sheet.

[0057] A spring sleeve 441 is fitted onto one end of the push rod 44. One end of the spring sleeve 441 is connected to the adjustment hole 431, and the other end is connected to the outer periphery of the push rod 44. An elastic sleeve 45 is provided at the other end of the push rod 44. The elastic sleeve 45 is rotatably connected to the end of the push rod 44 by a threaded connection. A groove 451 is provided on the clamping surface of the elastic sleeve 45 for fitting and clamping the edge of the sheet. The cross-sectional shape of the groove 451 is one of V-shape, U-shape or rectangle.

[0058] Overall workflow: Preparation stage (coarse and fine adjustment): The operator adjusts the distance between the two sliders 42 on the slide block 41 according to the width of the workpiece to complete the first stage of coarse adjustment; then, the operator observes the edge contour of the workpiece, selects the most matching adjustment hole 431 on the adjustment table 43, inserts and initially fixes the top rod 44 unit to complete the second stage of fine adjustment; this process is fast and intuitive, allowing the fixture to quickly adapt to the new workpiece, demonstrating the excellent versatility and changeover efficiency of the equipment.

[0059] Clamping stage (adaptive fine-tuning): The workpiece is placed between two pre-adjusted push rods 44; under the action of gravity, the push rods 44 begin to adapt: ​​the push rods at the contact points are compressed and retract, while the push rods at the non-contact points remain extended under the action of the spring sleeve 441; finally, all push rods 44 uniformly clamp the workpiece under the action of spring force; achieving flexible clamping with high fit; the clamping force is evenly distributed, completely avoiding workpiece deformation; the elastic sleeve 45 and the groove 451 ensure the reliability of clamping and anti-slip capability.

[0060] Angle setting stage: According to the process requirements, select the appropriate angle adjustment hole 11 on the frame 1, and use the screw 5 and nut to lock the tray 2 and the operating table 3 at the required tilt angle; Effect: Set the optimal process angle for polishing or spraying operations, laying the foundation for obtaining uniform and high-quality processing results.

[0061] Processing execution stage: Start the equipment and polish or spray the workpiece; during this period, the distributed adaptive clamping system effectively suppresses the vibration and displacement of the workpiece; the elastic pressure provided by the spring cylinder 441 can compensate for minor deformation and maintain a constant clamping state; the entire processing process is smooth and reliable, and the processing quality is significantly improved.

[0062] Unloading stage: After processing is completed, release the locking of the top rod 44 (or directly remove the workpiece, as it is mostly elastically clamped), and the workpiece is easily removed; the operation is simple and quick, further improving the overall work efficiency.

[0063] Overall beneficial effects summary: By setting up a modular clamping structure 4 consisting of a slide block 41, a pair of adjustable sliders 42 and an adjustment table 43, the workpiece width can be quickly and coarsely adjusted and the clamping position can be pre-positioned, thus improving the equipment's versatility and clamping efficiency for workpieces of different specifications.

[0064] By setting an adjustment platform 43 with multiple rows of equally spaced adjustment holes 431 and an independently telescopic push rod 44, manual fine adjustment of the initial distribution of the push rod group and adaptive fine adjustment during final clamping are achieved, resulting in high fit to irregular contour workpieces and reducing the risk of clamping instability caused by contour mismatch.

[0065] By setting a spring cylinder 441 at one end of the push rod 44, a controllable and uniform elastic clamping force is applied to each push rod, achieving a flexible adaptive clamping effect and reducing the probability of deformation or surface damage to thin-walled workpieces caused by concentrated force.

[0066] By setting an elastic sleeve 45 connected to the other end of the push rod 44 via a thread, the functions of wear resistance, friction enhancement and buffer protection of the clamping end are realized, which improves the reliability of clamping and reduces the risk of scratching the surface of precision workpieces; by setting V-shaped, U-shaped or rectangular grooves 451 on the clamping surface of the elastic sleeve 45, line contact or surface contact with the edge of the workpiece is realized, which obtains stronger anti-slip and anti-tangential force capabilities, and improves the stability of the workpiece during polishing or spraying.

[0067] By setting multiple sets of angle adjustment holes 11 on the side wall of the frame 1, positioning holes 21 on the tray 2, and matching screws 5, the tilt angle of the operating table 3 can be steplessly adjusted and reliably locked, thus obtaining the optimal processing angle and improving the polishing uniformity and coating quality.

[0068] In summary, by systematically integrating the aforementioned modular clamping structure 4, the three-level adjustment mechanism (coarse adjustment of the slider, fine adjustment of the hole position, and micro adjustment of the push rod) with the tilt adjustment mechanism, this equipment achieves efficient, flexible, and adaptive stable clamping of sheet-like automotive parts. It ultimately solves the technical problems mentioned in the background technology, such as insufficient clamping area, easy deformation, easy displacement, and cumbersome operation, significantly improving processing quality, production efficiency, and equipment utilization, while reducing workpiece scrap rate and tool maintenance costs.

[0069] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.

[0070] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0071] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A polishing fixture for automotive parts, characterized in that, include: A frame (1) with a pair of trays (2) on its top; The operating table (3) is set between two trays (2), and the operating table (3) is provided with several clamping structures (4). The clamping structure (4) includes a slide (41) disposed on the operating table (3), and two sliders (42) are disposed opposite to each other on the slide (41), the distance between the two sliders (42) being adjustable; Each slider (42) is provided with an adjustment platform (43), and the adjustment platform (43) is provided with a plurality of equally spaced adjustment holes (431), and a telescopic top rod (44) is provided in the adjustment hole (431). When the sheet is configured between two adjustment platforms (43), the two sets of top rods (44) are adapted to elastically extend and retract according to the outer contour of the sheet to flexibly and adaptively clamp the sheet.

2. The polishing fixture as described in claim 1, characterized in that, One end of the top rod (44) is fitted with a spring cylinder (441), one end of the spring cylinder (441) is connected to the adjustment hole (431), and the other end is connected to the outer periphery of the top rod (44).

3. The polishing fixture as described in claim 2, characterized in that, The other end of the push rod (44) is provided with an elastic sleeve (45), which is rotatably connected to the end of the push rod (44) by means of a threaded connection.

4. The polishing fixture as described in claim 3, characterized in that, The elastic sleeve (45) has a groove (451) on its clamping surface for fitting and clamping the edge of the sheet; The cross-sectional shape of the groove (451) is one of V-shape, U-shape or rectangle.

5. The polishing fixture as described in claim 4, characterized in that, Multiple sets of angle adjustment holes (11) of different heights are provided on the side wall or legs of the frame (1). The tray (2) is provided with a corresponding positioning hole (21); The polishing fixture also includes: a screw (5); The screw (5) is adapted to pass through the angle adjustment hole (11) and the positioning hole (21) in sequence and be locked by the nut, thereby fixing the tray (2) and the operating table (3) at different tilt angles.

6. A polishing fixture for automotive parts, characterized in that, include: A frame (1) is provided with a pair of trays (2) on its top. Multiple sets of angle adjustment holes (11) of different heights are opened on the side wall or legs of the frame (1). Positioning holes (21) are provided on the trays (2) respectively. The operating table (3) is set between two trays (2), and the operating table (3) is provided with several clamping structures (4). The screw (5) is adapted to pass through the angle adjustment hole (11) and the positioning hole (21) in sequence and be locked by a nut, thereby fixing the tray (2) and the operating table (3) at different tilt angles.

7. The polishing fixture as described in claim 6, characterized in that, The clamping structure (4) includes a slide (41) disposed on the operating table (3), and two sliders (42) are disposed opposite to each other on the slide (41), the distance between the two sliders (42) being adjustable; Each slider (42) is provided with an adjustment platform (43), and the adjustment platform (43) is provided with a plurality of equally spaced adjustment holes (431), and a telescopic top rod (44) is provided in the adjustment hole (431). When the sheet is configured between two adjustment platforms (43), the two sets of top rods (44) are adapted to elastically extend and retract according to the outer contour of the sheet to flexibly and adaptively clamp the sheet.

8. The polishing fixture as described in claim 7, characterized in that, One end of the top rod (44) is fitted with a spring cylinder (441), one end of the spring cylinder (441) is connected to the adjustment hole (431), and the other end is connected to the outer periphery of the top rod (44).

9. The polishing fixture as described in claim 8, characterized in that, The other end of the push rod (44) is provided with an elastic sleeve (45), which is rotatably connected to the end of the push rod (44) by means of a threaded connection.

10. The polishing fixture as described in claim 9, characterized in that, The elastic sleeve (45) has a groove (451) on its clamping surface for fitting and clamping the edge of the sheet; The cross-sectional shape of the groove (451) is one of V-shape, U-shape or rectangle.

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