A polishing apparatus for additive manufacturing

Abstract

The utility model discloses a kind of grinding equipment for additive manufacturing, including bottom plate, linkage assembly is installed with on the bottom plate, fixedly equipped with fixed frame outside linkage assembly, fixedly equipped with drive machine on the fixed frame, quick-mounting mechanism is provided in drive machine output, the quick-mounting mechanism includes fixed sleeve and insert rod, fixed sleeve is fixed in drive machine output, insert rod is inserted in fixed sleeve, sliding block is slidably arranged outside fixed sleeve, the sliding block is provided with multiple groups and top end is fixedly equipped with push block, multiple groups sliding block bottom end are fixedly equipped with clamping block, the outer wall of insert rod is provided with clamping groove, the clamping groove is provided with multiple groups respectively and multiple groups clamping block is connected, quick-mounting mechanism is combined with the combination structure of insert rod and fixed sleeve, combined with the clamping mode of multiple groups clamping block and clamping groove, the quick installation and disassembly of polishing head are realized, thoroughly solve the problem of tedious and time-consuming in prior art polishing head replacement.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing technology, and more specifically, to a grinding device for additive manufacturing. Background Technology

[0002] With the rapid development and widespread application of additive manufacturing technology, the efficiency and quality of surface polishing in the post-processing of 3D printing are receiving increasing attention. In scenarios such as high-precision parts manufacturing and small-batch customized production, operators often need to frequently change polishing heads of different specifications and wear levels to adapt to various complex curved surfaces and material properties.

[0003] However, existing grinding equipment generally uses traditional connection methods such as bolt fixing or slot embedding. These connection structures usually require special tools for disassembly and assembly, which is cumbersome and time-consuming, making it difficult to meet the requirements of production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a grinding device for additive manufacturing to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a grinding device for additive manufacturing, comprising a base plate, a linkage assembly mounted on the base plate, a fixed frame fixedly mounted on the outside of the linkage assembly, a drive motor fixedly mounted on the fixed frame, a quick-release mechanism provided at the output end of the drive motor, the quick-release mechanism comprising a fixed sleeve and a plug rod, the fixed sleeve being fixedly mounted at the output end of the drive motor, the plug rod being inserted into the fixed sleeve, a slider being slidably mounted on the outside of the fixed sleeve, the slider being provided in multiple sets, each with a push block fixedly mounted at its top, and a locking block fixedly mounted at the bottom end of each set of sliders, the plug rod having a locking groove on its outer wall, the locking groove being provided in multiple sets and engaging with the locking blocks in multiple sets, a limiting mechanism being provided on the outer wall of the fixed sleeve, the limiting mechanism comprising a rotating sleeve and a limiting sleeve, the rotating sleeve being rotatably mounted on the outer wall of the fixed sleeve, the limiting sleeve being fixedly mounted on the top surface of the rotating sleeve, and a grinding head being fixedly mounted at the bottom end of the plug rod.

[0006] The present invention is further configured such that a sliding hole is provided inside the insertion rod, a top block is slidably provided inside the sliding hole, and a compression spring is connected between the top block and the inner wall of the sliding hole. After unlocking, the compression spring releases energy to push the top block and the insertion rod, thereby realizing the automatic separation function of the grinding head. It does not require manual force to pull it out, which greatly improves the convenience of operation and the efficiency of replacement.

[0007] The present invention is further configured such that a positioning plate is fixedly provided inside the fixed sleeve, and a strip groove is provided on the outer wall of the insertion rod. The positioning plate and the strip groove are provided in multiple sets and are slidably connected to ensure that the insertion rod can only be inserted in a specific direction inside the fixed sleeve, thus preventing installation errors. At the same time, the multi-point positioning structure enhances the connection stability, eliminates rotation gaps, and improves grinding accuracy.

[0008] The present invention is further configured such that the outer wall of the fixed sleeve is provided with a movable groove, and the movable groove is provided in multiple sets and is slidably connected to multiple sets of push blocks respectively, so that the push blocks can slide smoothly on the outer wall of the fixed sleeve, ensuring the accurate positioning and consistent force of the locking block, and improving the reliability and service life of the locking mechanism.

[0009] The present invention is further configured such that a limiting groove is provided on the outer wall of the limiting sleeve, and multiple sets of the limiting groove are provided, each with an arc surface on its inner side. The arc surface structure allows the push block to be subjected to a smooth transition of thrust during rotation, avoiding the generation of sudden force, reducing operating resistance and extending the service life of the component.

[0010] The present invention is further configured such that the outer walls of the multiple sets of push blocks are all arc-shaped. This shape design forms a curved surface contact with the arc surface inside the limiting groove, which increases the contact area and improves the uniformity of force distribution. At the same time, it reduces the frictional resistance during rotation, making the locking and unlocking operations easier and smoother.

[0011] The present invention is further configured such that a push spring is connected between the inner wall of the multiple sets of push blocks and the inner wall of the movable groove. The push spring provides a continuous restoring force to the push blocks, so that the locking mechanism can automatically return to its position after the unlocking operation and be ready for the next use. There is no need to manually adjust the position of the components, which simplifies the operation process.

[0012] The present invention is further configured such that the inner wall of the rotating sleeve is provided with a sliding groove, and multiple sets of sliding grooves are provided, each with a return spring connected to its inner wall. Each set of return springs has a positioning block fixed at its top, and the positioning blocks slide within the multiple sets of sliding grooves. The outer wall of the fixed sleeve is provided with a positioning groove, and multiple sets of positioning grooves are provided, each abutting against the multiple sets of positioning blocks. The operator can perceive the locking position through clear touch and sound. At the same time, the engagement between the positioning blocks and the positioning grooves prevents the rotating sleeve from rotating accidentally, ensuring the reliability and safety of the locked state.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides a grinding device for additive manufacturing, which has the following beneficial effects: 1. The quick-installation mechanism, through the combination of a plug rod and a fixed sleeve, combined with multiple sets of locking blocks and slots, enables the rapid installation and removal of the grinding head. This completely solves the problem of cumbersome and time-consuming grinding head replacement in existing technologies. This mechanism does not require any special tools; simply rotating the rotating sleeve is sufficient to complete the locking and unlocking operations, greatly improving production efficiency and equipment utilization. At the same time, the multi-point locking design provides a stable and reliable connection, ensuring the safety and working accuracy of the grinding head under high-speed rotation.

[0014] 2. The limiting mechanism adopts a design combining a rotating sleeve and a limiting sleeve, with the arc-shaped push block sliding contacting the limiting groove, making operation easier and less strenuous, and providing clear positioning feedback. The built-in return spring and positioning block form an automatic positioning system, ensuring that the rotating sleeve can accurately return to its locked position at any position, preventing accidental loosening due to vibration. The compression spring and top block design in the sliding hole give the device an automatic pop-out function. After unlocking, there is no need to manually pull out the insertion rod, further simplifying the operation process, which is particularly suitable for the high-frequency replacement needs in industrial production environments.

[0015] 3. The coordination between the linkage components and the fixed frame enables multi-directional movement of the grinding equipment, adapting to the processing needs of various complex curved surfaces. The universal design of the quick-installation mechanism allows it to be compatible with grinding heads of different materials and shapes, eliminating the need for multiple grinding systems with different connection methods. This significantly reduces equipment costs and operational training complexity. At the same time, the structure has good sealing performance, effectively preventing dust generated during the grinding process from entering the connection parts, reducing jamming caused by dust accumulation and corrosion, extending the service life of the equipment, and providing strong support for the promotion and application of additive manufacturing technology. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a grinding device for additive manufacturing according to the present invention. Figure 2 This is a schematic diagram of the disassembly structure of the grinding head in this utility model; Figure 3 This is a cross-sectional view of the rotating sleeve in this utility model; Figure 4 This is a cross-sectional view of the insertion rod in this utility model; Figure 5 This is a cross-sectional view of the fixing sleeve in this utility model.

[0017] In the diagram: 1. Base plate; 2. Linkage assembly; 3. Fixing frame; 4. Drive motor; 5. Fixing sleeve; 6. Insert rod; 7. Slider; 8. Push block; 9. Locking block; 10. Locking groove; 11. Rotating sleeve; 12. Limiting sleeve; 13. Grinding head; 14. Sliding hole; 15. Top block; 16. Compression spring; 17. Positioning plate; 18. Strip groove; 19. Movable groove; 20. Limiting groove; 21. Push spring; 22. Sliding groove; 23. Return spring; 24. Positioning block; 25. Positioning groove. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figures 1-5 A grinding device for additive manufacturing includes a base plate 1, a linkage component 2 mounted on the base plate 1, a fixed frame 3 fixed on the outside of the linkage component 2, a drive motor 4 fixed on the fixed frame 3, a quick-release mechanism at the output end of the drive motor 4, the quick-release mechanism including a fixed sleeve 5 and a plug rod 6, the fixed sleeve 5 fixed to the output end of the drive motor 4, the plug rod 6 inserted into the fixed sleeve 5, a slider 7 slidably provided on the outside of the fixed sleeve 5, multiple sets of sliders 7 with push blocks 8 fixed at their top ends, and multiple sets of sliders 7 with locking blocks 9 fixed at their bottom ends, a slot 10 opened on the outer wall of the plug rod 6, multiple sets of slots 10 respectively engaging with multiple sets of locking blocks 9, a limiting mechanism provided on the outer wall of the fixed sleeve 5, the limiting mechanism including a rotating sleeve 11 and a limiting sleeve 12, the rotating sleeve 11 rotatably mounted on the outer wall of the fixed sleeve 5, the limiting sleeve 12 fixed on the top surface of the rotating sleeve 11, and a grinding head 13 fixed at the bottom end of the plug rod 6.

[0022] The insertion rod 6 has a sliding hole 14, and a top block 15 is slidably disposed in the sliding hole 14. A compression spring 16 is connected between the top block 15 and the inner wall of the sliding hole 14. During installation, the top block 15 is compressed by force to store energy in the compression spring 16. After unlocking, the compression spring 16 releases energy to push the top block 15 and the insertion rod 6, thereby realizing the automatic pop-out function of the insertion rod 6 without manual removal.

[0023] A positioning plate 17 is fixedly installed inside the fixed sleeve 5, and a strip groove 18 is opened on the outer wall of the insertion rod 6. Multiple sets of positioning plates 17 and strip groove 18 are provided and slidably connected. Multiple sets of positioning plates 17 and strip groove 18 form a precise rotation direction limiting structure to ensure that the insertion rod 6 can only be inserted into the fixed sleeve 5 in a specific direction, preventing installation errors and providing stable guidance during rotation.

[0024] The outer wall of the fixed sleeve 5 is provided with a movable groove 19. Multiple sets of movable grooves 19 are provided and are slidably connected to multiple sets of push blocks 8 respectively. The movable groove 19 provides a precise radial movement channel for the push blocks 8, so that the push blocks 8 can move smoothly along the outer wall of the fixed sleeve 5, ensuring the precise operation of the locking mechanism.

[0025] The outer wall of the limiting sleeve 12 is provided with a limiting groove 20. The limiting groove 20 is provided in multiple sets and the inner side is provided with an arc surface. When the limiting sleeve 12 is rotated, the arc surface in the limiting groove 20 applies a progressive thrust to the push block 8, so as to achieve precise control of the position of the push block 8 and make the locking process smooth and controllable.

[0026] The outer walls of multiple push blocks 8 are all set to be arc-shaped. The arc-shaped outer walls form surface contact with the arc surface in the limiting groove 20, which increases the contact area and improves the uniformity of force distribution. At the same time, it reduces the frictional resistance during rotation, making the operation easier and smoother.

[0027] Push springs 21 are connected between the inner walls of multiple push blocks 8 and the inner walls of the movable groove 19. The push springs 21 provide a continuous reset force for the push blocks 8, so that the push blocks 8 can automatically return to the initial position after the unlocking operation, forming an automatic reset system to simplify the operation process.

[0028] The inner wall of the rotating sleeve 11 is provided with a sliding groove 22. Multiple sets of sliding grooves 22 are provided, and each set of inner walls is connected with a return spring 23. The top of each set of return springs 23 is fixed with a positioning block 24. The multiple sets of positioning blocks 24 slide in the multiple sets of sliding grooves 22 respectively. The outer wall of the fixed sleeve 5 is provided with a positioning groove 25. Multiple sets of positioning grooves 25 are provided and abut against the multiple sets of positioning blocks 24 respectively. When the rotating sleeve 11 is rotated, the positioning block 24 is forced to leave the positioning groove 25 and compress the return spring 23. After reaching the new position, it automatically locks into the corresponding positioning groove 25 under the action of the return spring 23, forming a clear position feedback and locking function.

[0029] In this embodiment, when the grinding head 13 needs to be installed, the insert rod 6 is inserted into the fixed sleeve 5 and positioned and inserted into the strip groove 18 by multiple sets of positioning plates 17. The top block 15 abuts against the inner wall of the fixed sleeve 5 to compress the compression spring 16. Then, the rotating sleeve 11 is rotated and abuts against the outer wall of multiple sets of push blocks 8 by the arc surface set in the limiting groove 20 and pushes the push blocks 8 to slide along the movable groove 19. The multiple sets of push blocks 8 compress the push spring 21 and push the locking block 9 into the locking groove 10 by the slider 7 to fix the insert rod 6. The multiple sets of reset springs 23 push the positioning block 24 to abut against the positioning groove 25 to fix the rotating sleeve 11. The installation of the grinding head 13 is completed. The workpiece is clamped by the external clamp. The fixed frame 3 and the drive motor 4 are moved by the linkage component 2. The grinding head 13 is rotated by the drive motor 4 to grind the workpiece.

[0030] More specifically, when it is necessary to disassemble the grinding head 13, rotate the rotating sleeve 11, and push the positioning block 24 along the slide groove 22 to slide out of the positioning groove 25 through the multiple sets of positioning grooves 25 and squeeze the return spring 23. Continue to rotate the rotating sleeve 11 so that the multiple sets of positioning blocks 24 move in the multiple sets of positioning grooves 25. The rotating sleeve 11 drives the limiting sleeve 12 to rotate. When the multiple sets of limiting grooves 20 move to the outer wall of the multiple sets of push blocks 8, the contact with the push block 8 is released. The multiple sets of push springs 21 reset and push the push block 8 to slide along the movable groove 19. The slider 7 pulls the locking block 9 to disengage from the locking groove 10 and release the locking of the insertion rod 6. The pressure spring 16 resets and pushes the top block 15 so that the insertion tube is released from the fixed sleeve 5, thus completing the disassembly of the grinding head 13.

[0031] In summary, during the use or operation of the overall equipment: when it is necessary to install the grinding head 13, the insertion rod 6 is inserted into the fixed sleeve 5 and positioned and inserted into the strip groove 18 through multiple sets of positioning plates 17. The top block 15 abuts against the inner wall of the fixed sleeve 5 to compress the compression spring 16. Then, the rotating sleeve 11 is rotated and abuts against the outer wall of multiple sets of push blocks 8 through the arc surface set in the limiting groove 20 and pushes the push blocks 8 to slide along the movable groove 19. The multiple sets of push blocks 8 compress the push spring 21 and push the locking block 9 into the locking groove 10 through the slider 7 to fix the insertion rod 6. The multiple sets of reset springs 23 push the positioning block 24 to abut against the positioning groove 25 to fix the rotating sleeve 11, thus completing the installation of the grinding head 13. The workpiece is clamped by the external clamp. The fixed frame 3 and the drive motor 4 are moved by the linkage component 2. The grinding head 13 is rotated by the drive motor 4 to grind the workpiece.

[0032] However, when it is necessary to disassemble the grinding head 13, rotate the rotating sleeve 11, and push the positioning block 24 to slide away from the positioning groove 25 along the slide groove 22 through the multiple sets of positioning grooves 25 and squeeze the reset spring 23. Continue to rotate the rotating sleeve 11 so that the multiple sets of positioning blocks 24 move in the multiple sets of positioning grooves 25. The rotating sleeve 11 drives the limiting sleeve 12 to rotate. When the multiple sets of limiting grooves 20 move to the outer wall of the multiple sets of push blocks 8, the contact with the push block 8 is released. The multiple sets of push springs 21 reset and push the push block 8 to slide along the movable groove 19. The slider 7 pulls the locking block 9 to disengage from the locking groove 10 and release the locking of the insertion rod 6. The compression spring 16 resets and pushes the top block 15 so that the insertion tube is disengaged from the fixed sleeve 5, thus completing the disassembly of the grinding head 13.

[0033] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option. In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be addressed in this utility model. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grinding device for additive manufacturing, comprising a base plate (1), characterized in that: A linkage assembly (2) is installed on the base plate (1). A fixing frame (3) is fixed on the outside of the linkage assembly (2). A drive motor (4) is fixed on the fixing frame (3). A quick-release mechanism is provided at the output end of the drive motor (4). The quick-release mechanism includes a fixing sleeve (5) and a plug rod (6). The fixing sleeve (5) is fixed at the output end of the drive motor (4). The plug rod (6) is inserted into the fixing sleeve (5). A slider (7) is slidably provided on the outside of the fixing sleeve (5). Multiple sliders (7) are provided, and each slider is fixed with a pusher at its top. Block (8), multiple sets of sliders (7) are fixedly provided with a locking block (9) at the bottom end, the outer wall of the insert rod (6) is provided with a locking groove (10), the locking groove (10) is provided with multiple sets of locking blocks (9) respectively, the outer wall of the fixed sleeve (5) is provided with a limiting mechanism, the limiting mechanism includes a rotating sleeve (11) and a limiting sleeve (12), the rotating sleeve (11) is rotatably installed on the outer wall of the fixed sleeve (5), the limiting sleeve (12) is fixed on the top surface of the rotating sleeve (11), and the bottom end of the insert rod (6) is fixedly provided with a grinding head (13).

2. The grinding equipment for additive manufacturing according to claim 1, characterized in that: The insert (6) has a sliding hole (14) inside, and a top block (15) is slidably provided inside the sliding hole (14). A compression spring (16) is connected between the top block (15) and the inner wall of the sliding hole (14).

3. A grinding device for additive manufacturing according to claim 2, characterized in that: The fixing sleeve (5) is fixedly provided with a positioning plate (17), and the outer wall of the insertion rod (6) is provided with a strip groove (18). The positioning plate (17) and the strip groove (18) are provided with multiple sets and are slidably connected.

4. A grinding device for additive manufacturing according to claim 3, characterized in that: The outer wall of the fixed sleeve (5) is provided with a movable groove (19), and the movable groove (19) is provided in multiple sets and is slidably connected to multiple sets of push blocks (8).

5. A grinding device for additive manufacturing according to claim 4, characterized in that: The outer wall of the limiting sleeve (12) is provided with a limiting groove (20), and the limiting groove (20) is provided in multiple sets and the inner side of each groove is provided with an arc surface.

6. A grinding device for additive manufacturing according to claim 5, characterized in that: The outer walls of all the push blocks (8) are set to be arc-shaped.

7. A grinding device for additive manufacturing according to claim 6, characterized in that: multiple sets Push springs (21) are connected between the inner wall of the push block (8) and the inner wall of the movable groove (19).

8. A grinding device for additive manufacturing according to claim 7, characterized in that: The inner wall of the rotating sleeve (11) is provided with a sliding groove (22), and the sliding groove (22) is provided with multiple sets and the inner wall of each set is connected with a return spring (23). The top of each set of return springs (23) is fixed with a positioning block (24). The positioning blocks (24) slide in the multiple sets of sliding grooves (22). The outer wall of the fixed sleeve (5) is provided with a positioning groove (25), and the positioning groove (25) is provided with multiple sets and abuts against the multiple sets of positioning blocks (24).

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