A polishing device for automobile aluminum castings

Abstract

The utility model belongs to the technical field of machining equipment, especially a polishing device for automobile aluminum castings, including handheld frame, two hollow boards, control panel, two U-shaped boards, connecting shaft, two polishing assemblies, two cleaning rollers, two support reset components, two rotation adjusting components and two tension adjusting components. The utility model design is reasonable, easy operation can change the operation direction of polishing assembly flexibly, adapts to the polishing demand of different curved surface and complex structure of automobile aluminum castings, can adjust the tightness of polishing abrasive belt accurately simultaneously, ensures the stability of polishing process and the uniformity of polishing effect, and can remove the aluminum scrap and dust generated in the polishing process in real time, avoids the influence of impurity accumulation on polishing precision, can also install polishing wheels of different diameters and different materials on different polishing wheel mounting seats, satisfies the requirement of various polishing processes such as rough polishing and fine polishing, improves the versatility and operation efficiency of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a polishing device for automotive aluminum castings. Background Technology

[0002] In the automotive manufacturing industry, aluminum castings are widely used due to their lightweight advantages, and the surface polishing quality directly affects the assembly accuracy and appearance of the components. Currently, polishing operations for automotive aluminum castings mostly rely on traditional handheld polishing equipment, which has significant technical limitations: On the one hand, traditional equipment uses fixed polishing wheel sizes. When dealing with complex parts such as different curved surfaces and hole diameters of aluminum castings, it is often necessary to frequently change equipment or use polishing wheels of different sizes and types to meet different precision polishing requirements. This is not only cumbersome to operate but also significantly reduces work efficiency and increases labor and equipment costs. On the other hand, traditional belt polishing equipment often lacks an effective belt tension adjustment mechanism. During the polishing process, the belt is prone to loosening due to wear or stress, leading to unstable polishing force and even belt deviation or detachment. This affects polishing quality and poses safety hazards. In addition, aluminum powder and abrasive debris generated during polishing easily adhere to the belt surface. Existing equipment often lacks a real-time cleaning structure, and the accumulation of impurities continuously reduces the belt polishing effect and precision. Manual cleaning is usually required, further interrupting the work process and restricting overall polishing efficiency and finished product quality, making it difficult to meet the high-efficiency and high-precision production requirements of the automotive manufacturing industry.

[0003] Therefore, this utility model proposes a polishing device for automotive aluminum castings to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings mentioned in the background art by proposing a polishing device for automotive aluminum castings.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a polishing device for automotive aluminum castings, comprising a handheld frame, two hollow plates, a control panel, two U-shaped plates, a connecting shaft, two polishing components, two cleaning rollers, two support and reset components, two rotation adjustment components, and two tension adjustment components; Two hollow plates are fixedly installed on both sides of the handheld frame, and the control panel is fixedly installed on the top of the handheld frame. Two U-shaped plates are set on the side of the two hollow plates that are close to each other and are rotatably connected by a connecting shaft. Two rotation adjustment components are respectively set on the corresponding hollow plates and connected to the corresponding U-shaped plates. Both rotation adjustment components are electrically connected to the control panel. Two tension adjustment components are respectively set on the corresponding U-shaped plates. Two polishing components are respectively set on the corresponding U-shaped plates and tension adjustment components and are electrically connected to the control panel. Two support reset components are respectively set on the corresponding U-shaped plates. Two cleaning rollers are respectively set on the corresponding support reset components and connected to the corresponding polishing components. Two polishing wheel mounting seats are installed on each of the two polishing components.

[0007] Preferably, the polishing assembly includes a drive motor, two abrasive belts, a polishing belt, and two rotating shafts. Two parallel rotating shafts are rotatably mounted inside the U-shaped plate. Abrasive belts are fixedly mounted on each of the two rotating shafts. The same polishing belt is drivenly connected to the two abrasive belts. A drive motor electrically connected to the control panel is fixedly mounted on the U-shaped plate. The output shaft of the drive motor is axially fixedly connected to the rotating shaft closest to the connecting shaft. The ends of the two rotating shafts away from the drive motor are respectively fixedly connected to the corresponding polishing wheel mounting seats.

[0008] Preferably, the tension adjustment assembly includes a guide block, a push spring, and two guide rods. A guide opening is provided in the U-shaped plate, and a guide block is slidably installed in the guide opening. A rotating shaft away from the connecting shaft is rotatably installed on the guide block. Two parallel guide rods are fixedly installed in the guide opening and slidably connected to the guide block. A push spring is fixedly installed on the side of the guide block near the connecting shaft, and the push spring is fixedly connected to the side wall of the guide opening.

[0009] Preferably, the rotation adjustment assembly includes a support shaft, an adjustment motor, a worm gear, and a worm. A support shaft that is rotatably connected to the hollow plate is fixedly installed on the side of the U-shaped plate away from the connecting shaft. The support shaft is coaxial with the connecting shaft. One end of the support shaft extends into the hollow plate and is fixedly fitted with a worm gear. An adjustment motor that is electrically connected to the control panel is fixedly installed inside the hollow plate. A worm gear that meshes with the worm gear is fixedly connected to the output shaft of the adjustment motor.

[0010] Preferably, the regulating motor is a servo motor.

[0011] Preferably, a support plate is fixedly installed inside the hollow plate, and the adjusting motor is fixedly installed on the support plate.

[0012] Preferably, the support and reset assembly includes a strip plate, a rotating pin, a stop block, and a reset torsion spring. The rotating pin is rotatably mounted on the U-shaped plate, and the stop block and the strip plate are fixedly mounted at both ends of the rotating pin, respectively. The cleaning roller is rotatably mounted on the strip plate and contacts the polishing surface of the polishing belt. A spiral groove is provided on the outer periphery of the cleaning roller. The same reset torsion spring, which is movably sleeved on the outside of the rotating pin, is fixedly installed between the stop block and the side wall of the U-shaped plate.

[0013] Preferably, circular baffles are fixedly installed on both the front and rear sides of the abrasive belt wheel to prevent the polishing abrasive belt from detaching from the abrasive belt wheel. The distance between the outer periphery of the circular baffle and the outer periphery of the abrasive belt wheel is equal to the thickness of the polishing abrasive belt, and the diameter of the circular baffle is greater than the diameter of the abrasive belt wheel.

[0014] Preferably, a handle is fixedly installed on the top side of the handheld device.

[0015] Preferably, the outer side of the handle is covered with an anti-slip rubber sleeve, and the surface of the rubber sleeve is provided with anti-slip texture.

[0016] The beneficial effects of this utility model are: This invention, through the coordinated arrangement of a handheld frame, hollow plate, control panel, U-shaped plate, connecting shaft, polishing assembly, cleaning roller, support and reset assembly, guide block, rotation adjustment assembly, and tension adjustment assembly, enables convenient polishing of automotive aluminum castings. The polishing assembly allows for belt-based polishing, and different types of polishing wheels can be mounted on four polishing wheel mounting seats to meet the polishing needs of different parts and precision levels, avoiding frequent equipment changes. Simultaneously, the tension adjustment assembly, through the action of guide blocks, push springs, and guide rods, provides adaptive tension to the polishing belt. Tension adjustment ensures operational stability, and the rotation adjustment component utilizes a servo motor-driven worm gear structure to achieve precise control of the U-shaped plate's rotation angle, ensuring accurate adjustment of the polishing belt's grinding direction. This allows it to adapt to the polishing angles of different curved aluminum castings. Furthermore, the support and reset component, through the cooperation of a strip plate, rotating pin, stop block, and reset torsion spring, ensures that the cleaning roller always maintains effective contact with the polishing belt, promptly removing surface impurities and preventing any impact on the polishing effect. The overall design is compact, easy to operate, and effectively improves the efficiency and quality of polishing operations for automotive aluminum castings, while reducing the workload of operators. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a polishing device for automotive aluminum castings proposed in this utility model; Figure 2 for Figure 1 A partial sectional view of the structure; Figure 3 for Figure 2 Front view structural diagram; Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the support and reset assembly and the cleaning roller part proposed in this utility model; Figure 6 This is a three-dimensional structural diagram of the U-shaped plate, guide opening, and rotation adjustment assembly proposed in this utility model.

[0019] In the diagram: 1. Handheld frame; 11. Handle; 12. Hollow plate; 2. Control panel; 3. U-shaped plate; 301. Connecting shaft; 302. Guide opening; 31. Support shaft; 32. Adjusting motor; 33. Worm gear; 331. Support plate; 34. Worm wheel; 4. Sanding belt wheel; 401. Guide block; 402. Guide rod; 403. Push spring; 41. Rotating shaft; 411. Circular baffle; 42. Polishing sanding belt; 43. Drive motor; 44. Polishing wheel mounting seat; 5. Cleaning roller; 51. Strip plate; 52. Rotating pin; 53. Stop block; 54. Return torsion spring. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Reference Figure 1-6 A polishing device for automotive aluminum castings includes a handheld frame 1, two hollow plates 12, a control panel 2, two U-shaped plates 3, a connecting shaft 301, two cleaning rollers 5, and a polishing wheel mounting base 44. Two hollow plates 12 are fixedly installed on both sides of the handheld frame 1, the control panel 2 is fixedly installed on the top of the handheld frame 1, and two U-shaped plates 3 are both set on the side of the two hollow plates 12 that are close to each other and are rotatably connected by the connecting shaft 301. A support shaft 31, which is rotatably connected to the hollow plate 12, is fixedly installed on the side of the U-shaped plate 3 away from the connecting shaft 301. The support shaft 31 is coaxial with the connecting shaft 301. One end of the support shaft 31 extends into the hollow plate 12 and is fixedly fitted with a worm gear 34. An adjustment motor 32, which is electrically connected to the control panel 2, is fixedly installed inside the hollow plate 12. A worm 33, which meshes with the worm gear 34, is fixedly connected to the output shaft of the adjustment motor 32. The U-shaped plate 3 can be controlled to rotate around the support shaft 31 as needed, thereby adjusting the grinding direction of the polishing belt 42. In order to achieve precise control of the rotation angle of the U-shaped plate 3 and ensure that the polishing direction of the polishing belt 42 can be precisely adjusted to meet the polishing angle requirements of different curved aluminum castings, the adjustment motor 32 is a servo motor. A guide opening 302 is provided inside the U-shaped plate 3. A guide block 401 is slidably installed inside the guide opening 302. A rotating shaft 41 away from the connecting shaft 301 is rotatably installed on the guide block 401. Two parallel guide rods 402 are fixedly installed inside the guide opening 302 and slidably connected to the guide block 401. A push spring 403 is fixedly installed on the side of the guide block 401 near the connecting shaft 301, and the push spring 403 is fixedly connected to the side wall of the guide opening 302. This allows for adaptive tension adjustment of the polishing belt 42, thereby ensuring the working stability of the polishing belt 42. Two parallel rotating shafts 41 are rotatably installed inside the U-shaped plate 3. Abrasive belt wheels 4 are fixedly installed on both rotating shafts 41. The same polishing belt 42 is driven and connected to the two abrasive belt wheels 4. A drive motor 43 electrically connected to the control panel 2 is fixedly installed on the U-shaped plate 3. The output shaft of the drive motor 43 is axially fixedly connected to the rotating shaft 41 near the connecting shaft 301. The ends of the two rotating shafts 41 away from the drive motor 43 are respectively fixedly connected to the corresponding polishing wheel mounting seats 44. The system can perform polishing operations on automotive aluminum castings by belt grinding and polishing. At the same time, the polishing wheel mounting seats 44 can be used to adapt polishing wheels of different sizes to meet the polishing needs of different parts and different precisions of automotive aluminum castings. The polishing operation can be carried out without frequently changing polishing equipment during the polishing operation. A rotating pin 52 is rotatably mounted on the U-shaped plate 3. A stop block 53 and a strip plate 51 are fixedly mounted at both ends of the rotating pin 52, respectively. The cleaning roller 5 is rotatably mounted on the strip plate 51 and contacts the polishing surface of the polishing belt 42. A spiral groove is opened on the outer periphery of the cleaning roller 5. A return torsion spring 54, which is movably sleeved on the outside of the rotating pin 52, is fixedly installed between the stop block 53 and the side wall of the U-shaped plate 3. This spring can provide effective support for the cleaning roller 5 and can also adaptively adjust according to the tension of the polishing belt 42. This ensures that the cleaning roller 5 can always maintain effective contact with the polishing surface of the polishing belt 42. Furthermore, when the polishing belt 42 moves quickly, it can adapt to the slight vibration of the polishing belt 42 to peel off the aluminum powder, abrasive, and other impurities attached to the surface, thus preventing the accumulation of aluminum powder on the surface of the polishing belt 42 and affecting normal polishing.

[0022] In this embodiment, in order to prevent the polishing belt 42 from detaching from the abrasive wheel 4 due to uneven force or lateral displacement during tension adjustment during high-speed operation, and to effectively improve the stability and safety of the polishing belt 42 during operation, circular baffles 411 are fixedly installed on both the front and rear sides of the abrasive wheel 4 to prevent the polishing belt 42 from detaching from the abrasive wheel 4. The distance between the outer periphery of the circular baffle 411 and the outer periphery of the abrasive wheel 4 is equal to the thickness of the polishing belt 42, and the diameter of the circular baffle 411 is larger than the diameter of the abrasive wheel 4.

[0023] In this embodiment, in order to facilitate handheld operation of the device by the operator and to prevent slippage during prolonged holding or when hands are sweaty, thereby improving the stability and safety of operation, and in order to provide stable support for the adjustment motor 32, a handle 11 is fixedly installed on the top side of the handheld frame 1. The handle 11 is covered with an anti-slip rubber sleeve, and the surface of the rubber sleeve is provided with anti-slip texture. A support plate 331 is fixedly installed inside the hollow plate 12, and the adjustment motor 32 is fixedly installed on the support plate 331.

[0024] It is worth noting that the content protected by this application does not involve improvements to software, circuits, and methods. Therefore, the circuits, electronic components, and module mechanisms involved all adopt existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon.

[0025] Working principle: When in use, first turn on the power. The operator moves the device to the vicinity of the aluminum casting to be polished by holding the handle 11. Start the drive motor 43 through the control panel 2. The output shaft of the drive motor 43 drives the rotating shaft 41, which is fixedly connected to it axially, to rotate. The rotating shaft 41 drives the polishing belt 42 through the abrasive belt wheel 4, thereby causing the other abrasive belt wheel 4 and the corresponding rotating shaft 41 to rotate synchronously, realizing the cyclic movement of the polishing belt 42 for grinding and polishing. When using the belt for polishing, the two drive motors 43 rotate in opposite directions, which can effectively counteract some of the reaction force, thereby reducing hand fatigue and improving the uniformity of surface polishing, avoiding the appearance of one-way lines on the surface of the aluminum casting.

[0026] During the polishing process, if the polishing belt 42 becomes loose, the guide block 401 will slide along the guide rod 402 away from the connecting shaft 301 under the elastic force of the push spring 403, driving the corresponding rotating shaft 41 and the sanding wheel 4 to move, thereby adjusting the tension of the polishing belt 42 and ensuring that the polishing belt 42 always maintains an appropriate tension to guarantee the polishing effect.

[0027] When the polishing direction of the polishing belt 42 needs to be adjusted to adapt to different curved surfaces of the aluminum casting, the control panel 2 controls the start of the adjustment motor 32. The output shaft of the adjustment motor 32 drives the worm gear 33 to rotate. The worm gear 33 meshes with the worm wheel 34, causing the support shaft 31 to drive the U-shaped plate 3 to rotate around the connecting shaft 301, thereby changing the angle of the polishing belt 42. At the same time, the cleaning roller 5 is always in contact with the polishing surface of the polishing belt 42 under the action of the reset torsion spring 54. As the polishing belt 42 moves, the spiral grooves on the surface of the cleaning roller 5 can scrape off and guide the aluminum powder, abrasive chips and other impurities generated during the polishing process to one side, avoiding the accumulation of impurities that affect the polishing quality.

[0028] If high-precision polishing is required for specific parts of aluminum castings, a polishing wheel of appropriate size can be installed through the polishing wheel mounting base 44. Polishing operations of different precision can be completed without changing equipment. The entire operation process is smooth and efficient, effectively improving the polishing efficiency and quality of automotive aluminum castings.

[0029] The present invention provides a detailed description of a polishing device for automotive aluminum castings. Specific embodiments have been used to illustrate the principle and implementation of the present invention. These embodiments are merely illustrative and are intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A polishing device for automotive aluminum castings, characterized in that, It includes a handheld frame (1), two hollow plates (12), a control panel (2), two U-shaped plates (3), a connecting shaft (301), two polishing components, two cleaning rollers (5), two support reset components, two rotation adjustment components and two tension adjustment components; Two hollow plates (12) are fixedly installed on both sides of the handheld frame (1). The control panel (2) is fixedly installed on the top of the handheld frame (1). Two U-shaped plates (3) are set on the side of the two hollow plates (12) that are close to each other and are rotatably connected by the connecting shaft (301). Two rotation adjustment components are set on the corresponding hollow plates (12) and connected to the corresponding U-shaped plates (3). Both rotation adjustment components are electrically connected to the control panel (2). Two tension adjustment components are set on the corresponding U-shaped plates (3). Two polishing components are set on the corresponding U-shaped plates (3) and tension adjustment components and are electrically connected to the control panel (2). Two support reset components are set on the corresponding U-shaped plates (3). Two cleaning rollers (5) are set on the corresponding support reset components and connected to the corresponding polishing components. Two polishing wheel mounting seats (44) are installed on each of the two polishing components.

2. The polishing device for automotive aluminum castings according to claim 1, characterized in that: The polishing assembly includes a drive motor (43), two abrasive belts (4), a polishing belt (42), and two rotating shafts (41). Two parallel rotating shafts (41) are rotatably installed inside the U-shaped plate (3). Abrasive belts (4) are fixedly installed on both rotating shafts (41). The same polishing belt (42) is driven and connected to the two abrasive belts (4). A drive motor (43) electrically connected to the control panel (2) is fixedly installed on the U-shaped plate (3). The output shaft of the drive motor (43) is axially fixedly connected to the rotating shaft (41) near the connecting shaft (301). The ends of the two rotating shafts (41) away from the drive motor (43) are fixedly connected to the corresponding polishing wheel mounting seats (44).

3. The polishing device for automotive aluminum castings according to claim 2, characterized in that: The tension adjustment assembly includes a guide block (401), a push spring (403), and two guide rods (402). A guide opening (302) is provided in the U-shaped plate (3). The guide block (401) is slidably installed in the guide opening (302). A rotating shaft (41) away from the connecting shaft (301) is rotatably installed on the guide block (401). Two parallel guide rods (402) are fixedly installed in the guide opening (302) and slidably connected to the guide block (401). A push spring (403) is fixedly installed on the side of the guide block (401) near the connecting shaft (301), and the push spring (403) is fixedly connected to the side wall of the guide opening (302).

4. The polishing device for automotive aluminum castings according to claim 1, characterized in that: The rotation adjustment assembly includes a support shaft (31), an adjustment motor (32), a worm gear (34), and a worm (33). The support shaft (31) that is rotatably connected to the hollow plate (12) is fixedly installed on the side of the U-shaped plate (3) away from the connecting shaft (301). The support shaft (31) is coaxially arranged with the connecting shaft (301). One end of the support shaft (31) extends into the hollow plate (12) and is fixedly fitted with the worm gear (34). The adjustment motor (32) that is electrically connected to the control panel (2) is fixedly installed in the hollow plate (12). The worm (33) that meshes with the worm gear (34) is fixedly connected to the output shaft of the adjustment motor (32).

5. The polishing device for automotive aluminum castings according to claim 4, characterized in that: The regulating motor (32) is a servo motor.

6. The polishing device for automotive aluminum castings according to claim 4, characterized in that: A support plate (331) is fixedly installed inside the hollow plate (12), and an adjusting motor (32) is fixedly installed on the support plate (331).

7. The polishing device for automotive aluminum castings according to claim 2, characterized in that: The support and reset assembly includes a strip plate (51), a rotating pin (52), a stop block (53), and a reset torsion spring (54). The rotating pin (52) is rotatably mounted on the U-shaped plate (3). The stop block (53) and the strip plate (51) are fixedly mounted at both ends of the rotating pin (52). The cleaning roller (5) is rotatably mounted on the strip plate (51) and contacts the polishing surface of the polishing sand belt (42). A spiral groove is provided on the outer periphery of the cleaning roller (5). The same reset torsion spring (54) is movably sleeved on the outside of the rotating pin (52) and fixedly mounted between the stop block (53) and the side wall of the U-shaped plate (3).

8. The polishing device for automotive aluminum castings according to claim 2, characterized in that: Both the front and rear sides of the abrasive belt wheel (4) are fixedly equipped with circular baffles (411) to prevent the polishing abrasive belt (42) from detaching from the abrasive belt wheel (4). The distance between the outer periphery of the circular baffle (411) and the outer periphery of the abrasive belt wheel (4) is equal to the thickness of the polishing abrasive belt (42), and the diameter of the circular baffle (411) is greater than the diameter of the abrasive belt wheel (4).

9. The polishing device for automotive aluminum castings according to claim 1, characterized in that: A handle (11) is fixedly installed on the top side of the handheld frame (1).

10. A polishing device for automotive aluminum castings according to claim 9, characterized in that: The handle (11) is fitted with an anti-slip rubber sleeve on the outside, and the surface of the rubber sleeve is provided with anti-slip texture.

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