Full-angle automatic polishing equipment for castings

Abstract

The utility model discloses a kind of full-angle automatic polishing equipment of casting, it is related to casting polishing equipment technical field.It includes casting placement platform, and one side of casting placement platform is equipped with polishing mechanical arm, and the front end of polishing mechanical arm is rotatably connected with swivel joint, and swivel joint is equipped with polishing wheel, and the central position of swivel joint is equipped with fixed rod, and the central position of polishing wheel is equipped with the through hole of being penetrated to fixed rod, and the front end of fixed rod is equipped with the fixing piece for polishing wheel fastening on swivel joint, wherein, swivel joint is also equipped with the positioning assembly for enhancing the stability of polishing wheel, and casting placement platform is also equipped with the automatic clamping assembly that can be self-adapting clamping casting.The utility model's polishing wheel is fastened with fixed rod and fixing piece, and double positioning structure is formed by combining positioning assembly, vibration impact force generated in high-speed polishing process can be further offset, and the replacement time of polishing wheel is greatly shortened, and different sizes, shape's casting can be adapted clamping.

Description

Technical Field

[0001] This utility model relates to the technical field of casting grinding equipment, specifically to an automated casting grinding equipment with full-angle grinding capability. Background Technology

[0002] Castings are core components in fields such as machinery manufacturing, automobiles, aerospace, and construction machinery. Their forming quality directly determines the performance and reliability of subsequent finished products. Currently, grinding devices for castings mainly fix the grinding wheel on a frame, and the casting is manually moved and its relative position to the grinding wheel is adjusted to achieve grinding. Alternatively, a simple robotic arm structure is used in conjunction with a fixed casting fixture to perform the grinding operation. This method is widely used in small- to medium-batch casting production scenarios.

[0003] However, existing grinding devices mostly use a single screw and nut for fixing the grinding wheel. During high-speed grinding, the grinding wheel is prone to loosening due to vibration, which can lead to deviation of the grinding trajectory and reduced accuracy. It may also cause safety hazards due to the grinding wheel falling off. Moreover, the grinding wheel needs to be repeatedly adjusted for positioning when replacing it, which is cumbersome. In addition, casting clamping mostly uses manual clamping or simple clamps to fix the casting. The casting position needs to be manually adjusted and locked, which is not only time-consuming and labor-intensive, but also difficult to control the clamping force accurately. Furthermore, it cannot be adapted to castings of different sizes and shapes, resulting in poor versatility and difficulty in meeting the needs of mass automated production. Utility Model Content

[0004] To address the problems of poor grinding wheel stability, cumbersome replacement and positioning, low degree of automation in casting clamping, and poor versatility in existing casting grinding equipment, this utility model provides an automated casting grinding equipment with full-angle grinding capabilities.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned technical effects is: An automated casting grinding device includes a casting placement platform, a grinding robotic arm on one side of the casting placement platform, a rotary joint rotatably connected to the front end of the grinding robotic arm, a grinding wheel on the rotary joint, a fixing rod at the center of the rotary joint, a through hole at the center of the grinding wheel that passes through the fixing rod, a fixing member at the front end of the fixing rod for fastening the grinding wheel to the rotary joint, a positioning component for enhancing the stability of the grinding wheel on the rotary joint, and an automatic clamping component for adaptively clamping the casting on the casting placement platform. The positioning component includes at least one positioning block that is offset from the fixed rod and fixed to the front end face of the rotary joint. The grinding wheel has at least one positioning hole that passes through the grinding wheel and is adapted to be connected to the positioning block. The front end of the positioning block has a spring groove, in which a spring is fixed. The free end of the spring is connected to a wedge-shaped limiting block. When the spring is in a free state, the wedge-shaped tip of the limiting block extends out of the spring groove to position the grinding wheel.

[0006] Preferably, in the above-mentioned fully automated grinding equipment for castings, there are two positioning blocks symmetrically arranged on the front end face of the rotary joint, and there are two positioning holes, which are respectively adapted and connected to the positioning blocks.

[0007] Preferably, in the above-mentioned fully automated grinding equipment for castings, the fixed rod has a smooth, polished end near the rotary joint, and the other end of the fixed rod has a threaded end, wherein the diameter of the smooth end is larger than the diameter of the threaded end, the through hole of the grinding wheel is fitted onto the smooth end, and the fixing element is threaded onto the threaded end.

[0008] Preferably, in the above-mentioned fully automated grinding equipment for castings, the fixing component includes a fixing nut, which has a threaded through hole for threaded connection of the threaded rod segment.

[0009] Preferably, in the above-mentioned fully automated grinding equipment for castings, a gasket is also fitted onto the smooth rod section.

[0010] Preferably, in the above-mentioned fully automated grinding equipment for castings, the automatic clamping assembly includes two clamping plates slidably disposed on the upper surface of the casting placement platform, and the two clamping plates are connected to an adjustment mechanism that can drive them to move closer to each other or further apart.

[0011] Preferably, in the above-mentioned fully automated grinding equipment for castings, the adjusting mechanism includes a bidirectional threaded rod and a drive motor connected thereto. The casting placement platform is provided with a limiting groove inside. Along the relative sliding direction of the two clamping plates, the upper surface of the casting placement platform is provided with two parallel guide slots that communicate with the limiting groove. The limiting groove is provided with two opposing limiting sliders. The top ends of the limiting sliders are respectively provided with fixed connecting plates that can be movably adapted to the guide slots. The two ends of the clamping plates are respectively connected to the fixed connecting plates at the corresponding ends. The bidirectional threaded rod is rotatably disposed in the limiting groove, and the two limiting sliders are respectively threadedly connected to the two ends of the bidirectional threaded rod.

[0012] Preferably, in the above-mentioned automated grinding equipment for castings at all angles, the clamping contact surface of the clamping plate is arc-shaped and made of rubber.

[0013] Preferably, in the above-mentioned fully automated casting grinding equipment, a mounting base is provided on one side of the casting placement platform, a rotating base is provided on the mounting base, and the grinding robotic arm is connected to the rotating end cover of the rotating base.

[0014] The beneficial effects of this utility model are as follows: The grinding wheel of this utility model forms a double positioning structure through the fastening cooperation of the fixing rod and the fixing component, combined with the positioning component. The fixing rod provides an axial fixing base for the grinding wheel, and the positioning block is embedded in the positioning hole of the grinding wheel, directly restricting the circumferential rotation of the grinding wheel. At the same time, the limiting block always abuts against the outside of the grinding wheel under the action of the spring force, further offsetting the vibration and impact force generated during high-speed grinding, and significantly shortening the replacement time of the grinding wheel, thus improving the continuous operation of the casting grinding equipment. In addition, the automatic clamping component that can adaptively clamp castings forms an automated and adjustable clamping mechanism through the linkage structure of the drive motor, the bidirectional threaded rod and the limiting slider, in conjunction with the clamping plate. It can adapt to castings of different sizes and shapes. The clamping plate adopts an arc-shaped design and is equipped with inner rubber material, which not only increases the contact area with the casting to ensure clamping stability, but also avoids damage to the surface of the casting caused by rigid clamping, further expanding the application range of the equipment. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention. Figure 2 This is a perspective view of the present invention from another angle; Figure 3 This is an assembly connection diagram of the grinding wheel and the rotary joint described in this utility model; Figure 4 This is a schematic diagram of the structure of the fixing rod described in this utility model; Figure 5 This is an internal structural diagram of the casting placement platform described in this utility model; Figure 6 This is a perspective view of the adjustment mechanism described in this utility model. Detailed Implementation

[0016] To provide a further understanding of this utility model, the following description, with reference to the accompanying drawings and specific embodiments, will further illustrate the utility model: In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" 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 a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Please see Figure 1 , Figure 2 and Figure 3 As shown in the figure, this utility model embodiment proposes an automated full-angle grinding device for castings. The grinding device includes a casting placement platform 1, with a grinding robotic arm 4 on one side. A rotary joint 5 is rotatably connected to the front end of the grinding robotic arm 4, and a grinding wheel 6 is mounted on the rotary joint 5. The casting placement platform 1 serves as the basic supporting component of the grinding device, primarily used to place the casting to be ground. The grinding robotic arm 4 is a multi-axis robotic arm; its extendable and rotatable characteristics allow it to drive the grinding wheel 6 at its front end to different positions on the casting, enabling grinding adjustments at different locations. The rotary joint 5 directly drives the grinding wheel 6 to rotate for grinding operations. Figure 3 As shown, a fixing rod 7 is located at the center of the rotary joint 5, and a through hole 61 for the grinding wheel 6 is located at the center of the rotary joint 5. The front end of the fixing rod 7 has a fixing component for fastening the grinding wheel 6 to the rotary joint 5. As an improvement of this invention, the rotary joint 5 also has a positioning component to enhance the stability of the grinding wheel 6, and the casting placement platform 1 is equipped with an automatic clamping component that can adaptively clamp castings and adapt to castings of different sizes and shapes. In this embodiment, the fixing rod 7 provides an axial fixing base for the grinding wheel 6, and the positioning component is used to limit the circumferential rotation of the grinding wheel 6 and counteract the vibration and impact forces generated during high-speed grinding. The automatic clamping component that can adaptively clamp castings has automated and adjustable clamping functions, can adapt to castings of different sizes and shapes, has high versatility, and improves the efficiency and accuracy of casting clamping.

[0019] Specifically, in the embodiments of this utility model, such as Figure 3 As shown, the positioning assembly includes at least one positioning block 9 offset from the fixed rod 7 and fixed to the front end face of the rotary joint 5. The grinding wheel 6 has at least one positioning hole 13 that penetrates the grinding wheel 6 and is adapted to connect with the positioning block 9. The positioning block 9 and the positioning hole 13 are pluggably connected, allowing for easy replacement of the grinding wheel. To achieve positioning of the grinding wheel 6, as... Figure 3 As shown, the front end of the positioning block 9 is provided with a spring groove, and a spring 11 is fixed in the spring groove. The free end of the spring 11 is connected to a wedge-shaped limiting block 10. When the spring 11 is in a free state, the wedge-shaped tip of the limiting block 10 extends out of the spring groove to position the grinding wheel 6.

[0020] Specifically, the positioning block 9 moves synchronously with the rotary joint 5, maintaining a fixed relative position with the grinding wheel 6 to prevent positioning failure. The positioning block 9 is connected within the positioning hole 13. After insertion into the positioning hole 13, it directly locks the grinding wheel 6, restricting its rotation around the fixed rod 7 and preventing slippage or free-spinning during grinding. The limiting block 10 abuts against the outside of the grinding wheel 6. After abutting against the grinding wheel 6, the limiting block 10 applies pressure radially to the grinding wheel 6, further counteracting the impact force generated during grinding vibration and making the grinding wheel 6 more stable during operation.

[0021] In some embodiments, the spring groove disposed at the front end of the positioning block 9 can be a through spring groove or two symmetrical blind hole-shaped spring grooves. When the spring groove is a through structure, the spring 11 inside can be configured as a single integral spring, with the middle section of the integral spring fixed in the through spring groove, and its free ends respectively connected to a wedge-shaped limiting block 10. When the spring groove is a two symmetrical blind hole-shaped structure, the spring 11 inside is configured as two separate springs, with a separate spring installed in each blind hole-shaped spring groove. The inner end of the separate spring is fixed in the corresponding blind hole-shaped spring groove, and its free end is fixedly connected to the wedge-shaped limiting block 10.

[0022] Furthermore, in a preferred embodiment of this utility model, such as Figure 3 As shown, there are two positioning blocks 9, which are symmetrically arranged on the front end face of the rotary joint 5. There are two positioning holes 13, which are adapted and connected to the positioning blocks 9 respectively.

[0023] Furthermore, in a preferred embodiment of this utility model, such as Figure 4As shown, the fixing rod 7 has a smooth, polished section 71 at one end near the rotary joint 5, and a threaded section 72 at the other end. The diameter of the polished section 71 is larger than the diameter of the threaded section 72. The through hole 61 of the grinding wheel 6 fits onto the polished section 71, and the fixing element is threaded onto the threaded section 72. The polished section 71 and the through hole 61 of the grinding wheel 6 can be slidably connected, facilitating the installation and removal of the grinding wheel 6. When it is necessary to replace the grinding wheel with a different model, after removing the fixing element from the threaded section 72 and releasing the limiting block 10 from the grinding wheel 6, the old grinding wheel can be removed simply by sliding along the axial direction of the fixing rod 7, and then the new grinding wheel can be installed. Disassembly and replacement are convenient and quick.

[0024] It should be noted that the above-mentioned replacement of different models of grinding wheels refers to replacing grinding wheels with different materials, diameters, and thicknesses. Regardless of the model of the grinding wheel, the positioning hole 13 and the through hole 61 on it remain unchanged. That is, the positioning hole 13 always matches the positioning block 9, and the through hole 61 always matches the fixing rod 7.

[0025] Furthermore, in a preferred embodiment of this utility model, such as Figure 3 As shown, the fixing component includes a fixing nut 8, which has a threaded through hole 12 for threaded connection of a threaded rod segment 72. One side of the grinding wheel 6 abuts against the front end face of the rotary joint 5, and the other side of the grinding wheel 6 abuts against the fixing nut 8. Utilizing the self-locking characteristic of the threaded connection, after tightening the fixing nut 8, continuous axial pressure can be applied from the outside of the grinding wheel 6, firmly fixing the grinding wheel 6 to the fixing rod 7. The threaded rod segment 72 is threaded into the threaded through hole 12, allowing the front end of the fixing rod 7 to engage with its own external thread through the internal thread of the threaded through hole 12, achieving a tight connection between the two.

[0026] Furthermore, in some embodiments, to ensure compatibility with grinding wheels of different models and sizes, such as Figure 4 As shown, a washer 20 is also fitted onto the smooth rod section 71, and the inner end face of the grinding wheel can be made to abut against the washer 20 through the washer 20.

[0027] Furthermore, in a preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 6 As shown, the automatic clamping assembly includes two clamping plates 19 slidably disposed on the upper surface of the casting placement platform 1. The two clamping plates 19 are connected to an adjustment mechanism that can drive them to move closer together or further apart. By driving the two clamping plates 19 through the adjustment mechanism, the distance between the two clamping plates 19 can be adjusted to accommodate castings of different sizes and shapes.

[0028] Specifically, in the preferred embodiment of this utility model, such as Figure 6 As shown, the adjustment mechanism includes a bidirectional threaded rod 15 and a drive motor 14 connected to it. The drive motor 14 serves as a power source to provide stable power for clamping the casting. Figure 2 As shown, the drive motor 14 is fixed to the side of the casting placement platform 1. Further, as... Figure 5 As shown, the casting placement platform 1 has a limiting groove 16 inside. Along the relative sliding direction of the two clamping plates 19, the upper surface of the casting placement platform 1 has two parallel guide slots 161 that communicate with the limiting groove 16. To drive the movement of the two clamping plates 19, the limiting groove 16 has two opposing limiting sliders 17. The top ends of the limiting sliders 17 are respectively provided with fixed connecting plates 18 that are movably adapted to the guide slots 161. The two ends of the clamping plates 19 are respectively connected to the corresponding fixed connecting plates 18. Figure 1 As shown, the bidirectional threaded rod 15 is rotatably disposed in the limiting groove 16, and the bidirectional threaded rod 15 provides a transmission basis for the subsequent opposite or reverse movement of the limiting slider 17. Figure 6 As shown, two limiting sliders 17 are threadedly connected to both ends of the bidirectional threaded rod 15. The limiting sliders 17 are slidably connected within the limiting groove 16, restricting their movement to a horizontal direction. The rotational motion of the bidirectional threaded rod 15 is converted into linear motion of the limiting sliders 17. Combined with the bidirectional thread of the bidirectional threaded rod 15, this allows the two limiting sliders 17 to move synchronously towards or away from each other, preparing for clamping the casting. The adjustment principle is as follows: when the drive motor 14 rotates forward, the two limiting sliders 17 threadedly connected to both ends of the bidirectional threaded rod 15 move closer together to clamp the casting; when the drive motor 14 rotates in reverse, the two limiting sliders 17 move further apart to adjust the clamping space or loosen the clamped casting.

[0029] Preferably, in some embodiments, the clamping contact surface of the clamping plate 19 is arc-shaped and made of rubber. The clamping plate 19 ensures that the clamping force acts directly on the casting, preventing the casting from moving during grinding. The arc shape is to better conform to the surface of the casting, increase the contact area with the casting, improve the stability of the clamping, and utilize the elasticity of rubber to avoid scratches, pressure marks, or other damage to the surface of the casting caused by rigid clamping. At the same time, it can further prevent the casting from slipping during grinding, ensuring grinding accuracy.

[0030] Furthermore, in a preferred embodiment of this utility model, such as Figure 1As shown, a mounting base 2 is provided on one side of the casting placement platform 1, and a rotating base 3 is mounted on the mounting base 2. The grinding robotic arm 4 is connected to the rotating end cap of the rotating base 3. The mounting base 2 provides fixed support for the rotating base 3 above, allowing the rotating base 3 to be installed stably. The rotating base 3 has the function of rotating 360 degrees in the horizontal direction, which can drive the grinding robotic arm 4 above to rotate as a whole, thereby expanding the working range of the grinding robotic arm 4.

[0031] The working principle of this utility model is as follows: Before grinding the casting, the casting to be ground is placed in the clamping area of ​​the casting placement platform 1. Then, the drive motor 14 located at the rear of the casting placement platform 1 is started, and the drive motor 14 drives the bidirectional threaded rod 15 to rotate inside the casting placement platform 1. The movement direction of the limiting slider 17 is restricted by the limiting groove 16, and the two limiting sliders 17 will move towards the center synchronously along the limiting groove 16. When the limiting sliders 17 move, the fixed connecting plates 18 fixed at both ends of the top will move together, thereby driving the two clamping plates 19 to clamp the casting towards each other. The arc-shaped structure of the clamping plates 19 can adapt to the curved surface or circular contour of the casting, and the rubber inner side buffers the pressure when clamping, avoiding leaving indentations or scratches on the surface of the casting, and finally firmly fixing the casting on the casting placement platform 1, providing a stable foundation for subsequent grinding.

[0032] Once the casting is clamped, the rotary joint 5 is activated to drive the grinding wheel 6 to rotate at high speed. The rotating base 3, in turn, rotates the grinding robotic arm 4 360 degrees horizontally, changing the horizontal position of the grinding wheel 6. The grinding robotic arm 4 is telescopic and rotatable, enabling it to deliver the grinding wheel 6 to different parts of the casting, ensuring it fits the inclined surface or sidewall of the hole. During this process, the positioning block 9 is embedded in the positioning hole 13 of the grinding wheel 6 to prevent circumferential slippage when the grinding wheel 6 rotates at high speed. The spring 11 inside the positioning block 9 constantly pushes the limit block 10 against the outer side of the grinding wheel 6, counteracting the vibration generated during grinding and allowing the grinding wheel 6 to maintain a stable grinding trajectory, ultimately achieving full-angle grinding of the casting without dead angles.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. An automated grinding device for castings at all angles, comprising a casting placement platform (1), a grinding robotic arm (4) provided on one side of the casting placement platform (1), a rotary joint (5) rotatably connected to the front end of the grinding robotic arm (4), a grinding wheel (6) provided on the rotary joint (5), a fixing rod (7) provided at the center of the rotary joint (5), a through hole (61) for the grinding wheel (6) to be fitted onto the fixing rod (7) at the center of the grinding wheel (6), and a fixing member for fastening the grinding wheel (6) onto the rotary joint (5) at the front end of the fixing rod (7), characterized in that, The rotary joint (5) is also provided with a positioning component for enhancing the stability of the grinding wheel (6), and the casting placement platform (1) is also provided with an automatic clamping component that can adaptively clamp the casting. The positioning component includes at least one positioning block (9) that is offset from the fixed rod (7) and fixed to the front end face of the rotary joint (5). The grinding wheel (6) is provided with at least one positioning hole (13) that passes through the grinding wheel (6) and is adapted to be connected to the positioning block (9). The front end of the positioning block (9) is provided with a spring groove, and a spring (11) is fixed in the spring groove. The free end of the spring (11) is connected to a wedge-shaped limiting block (10). When the spring (11) is in a free state, the wedge-shaped tip of the limiting block (10) extends out of the spring groove to position the grinding wheel (6).

2. The automated grinding equipment for castings at all angles according to claim 1, characterized in that, There are two positioning blocks (9), which are symmetrically arranged on the front end face of the rotary joint (5). There are two positioning holes (13), which are adapted and connected to the positioning blocks (9) respectively.

3. The automated grinding equipment for castings at all angles according to claim 1, characterized in that, The fixing rod (7) has a smooth, polished rod segment (71) at one end near the rotary joint (5), and a threaded rod segment (72) with threads on the other end. The diameter of the smooth rod segment (71) is larger than the diameter of the threaded rod segment (72). The through hole (61) of the grinding wheel (6) is fitted onto the smooth rod segment (71), and the fixing member is threaded onto the threaded rod segment (72).

4. The automated grinding equipment for castings at all angles according to claim 3, characterized in that, The fastener includes a fixing nut (8) having a threaded through hole (12) for threaded connection to the threaded rod segment (72).

5. The automated grinding equipment for castings at all angles according to claim 3, characterized in that, A gasket (20) is also fitted onto the smooth rod segment (71).

6. The automated grinding equipment for castings at all angles according to claim 1, characterized in that, The automatic clamping assembly includes two clamping plates (19) that are slidably disposed on the upper surface of the casting placement platform (1), and the two clamping plates (19) are connected to an adjustment mechanism that can drive them to move closer to each other or further apart.

7. The automated grinding equipment for castings at all angles according to claim 6, characterized in that, The adjustment mechanism includes a bidirectional threaded rod (15) and a drive motor (14) connected to it. The casting placement platform (1) is provided with a limiting slide groove (16) inside. Along the relative sliding direction of the two clamping plates (19), the upper end face of the casting placement platform (1) is provided with two parallel guide slots (161) that are connected to the limiting slide groove (16). The limiting slide groove (16) is provided with two opposing limiting sliders (17). The top ends of the limiting sliders (17) are respectively provided with fixed connecting plates (18) that can be movably adapted to the guide slots (161). The two ends of the clamping plates (19) are respectively connected to the fixed connecting plates (18) at the corresponding ends. The bidirectional threaded rod (15) is rotatably disposed in the limiting slide groove (16). The two limiting sliders (17) are respectively threadedly connected to the two ends of the bidirectional threaded rod (15).

8. The automated grinding equipment for castings at all angles according to claim 6, characterized in that, The clamping contact surface of the clamping plate (19) is arc-shaped and made of rubber.

9. The automated grinding equipment for castings at all angles according to claim 1, characterized in that, The casting placement platform (1) has a mounting base (2) on one side, and a rotating base (3) is provided on the mounting base (2). The grinding robot arm (4) is connected to the rotating end cover of the rotating base (3).

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