Positioning and clamping device and method for grinding fragile cover

Abstract

The invention relates to the technical field of grinding devices, in particular to a positioning and clamping device and method for grinding a fragile cover. The device comprises a ground rail, a sliding table, a rotating table, a stand column, a workbench and a clamp. The sliding table can move between the loading and unloading station and the polishing station along the ground rail. The rotating table and the working table are driven by independent driving mechanisms respectively, horizontal rotation and pitching overturning are achieved, and therefore the space angle of a clamped workpiece is automatically and accurately adjusted. According to the grinding device, the operation mode that a workpiece is turned over manually and effortlessly for grinding is completely replaced, the labor intensity is remarkably reduced, and the efficiency, precision and consistency of grinding operation are greatly improved. The device is further integrated with a dust collecting box, so that the working environment is improved.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, and in particular to a positioning and clamping device and method for polishing fragile caps. Background Technology

[0002] Fragile caps are common industrial parts, typically die-cast from materials such as rigid polyurethane foam. To obtain a smooth surface and ensure adhesion of subsequent coatings such as paint, the surface must be sanded and polished.

[0003] In traditional production methods, this polishing process relies entirely on manual labor. Workers place the fragile cap on a simple workbench or tray, supporting the workpiece with one hand while using a polishing tool in the other. However, to polish all surfaces and edges of the workpiece, workers need to constantly manually rotate and adjust the angle and orientation of the fragile cap. This method has significant drawbacks: First, it is labor-intensive and inefficient. Continuously manually flipping and lifting the workpiece is physically demanding and cumbersome, resulting in excessively long polishing times for individual workpieces, severely restricting overall production efficiency and failing to meet the pace requirements of mass production or assembly line operations. Second, processing accuracy and consistency are difficult to guarantee. Manual angle adjustments rely on experience and feel, resulting in poor repeatability and easily leading to uneven polishing within the same batch of workpieces, affecting the quality and appearance consistency of the final product.

[0004] Therefore, the existing technology lacks a dedicated positioning and clamping device that can replace manual labor and enable the fragile cover to automatically, accurately, and effortlessly adjust its spatial posture during the grinding process. This is a key bottleneck in improving the automation level and production efficiency of grinding such parts. Summary of the Invention

[0005] The main objective of this invention is to provide a positioning and clamping device and method for grinding fragile caps. Its primary purpose is to solve the technical problems of high labor intensity, low processing efficiency, and poor precision consistency caused by frequent and laborious manual rotation and adjustment of the workpiece angle during manual grinding. This invention achieves precise adjustment of the workpiece posture through mechanical automation, freeing up manpower and improving the efficiency of grinding operations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention provides a positioning and clamping device for grinding fragile caps, including a horizontally installed ground rail and a sliding table that can move along the ground rail; a rotary table is installed on the sliding table; two columns are vertically installed on the top surface of the rotary table, and the two columns are arranged relatively and spaced apart; a flip-up worktable is installed between the two columns; a clamp for clamping workpieces is installed on the worktable; one end of the ground rail is set as a loading and unloading station, and the other end is set as a grinding station; it also includes a first driving mechanism for driving the sliding table to move, a second driving mechanism for driving the rotary table to rotate, and a third driving mechanism for driving the worktable to flip.

[0007] Preferably, a dust collection box is provided on the top surface of the rotary table, and the dust collection box is located directly below the worktable.

[0008] Preferably, a dust cover is provided on the ground rail.

[0009] Preferably, the first drive mechanism includes a rack, a first motor, and a gear; the rack is mounted on one side of the ground rail; the first motor is mounted on the sliding platform; the gear is mounted on the output shaft of the first motor, and the gear meshes with the rack.

[0010] Preferably, the second drive mechanism is a second motor and a worm gear mechanism; the second motor is mounted on the sliding table; the worm gear mechanism is disposed in the inner cavity of the sliding table; the worm gear mechanism includes a worm wheel mounted on the bottom shaft of the rotary table and a worm connected to the output shaft of the second motor; the worm and the worm wheel mesh and transmit power.

[0011] Preferably, the rotary table is mounted on the top surface of the sliding table via a planar thrust bearing.

[0012] Preferably, the two ends of the worktable are rotatably mounted on the columns via rotating shafts; the third drive mechanism includes a third motor mounted on one of the columns, and the rotating shaft on the column is connected to the output shaft of the third motor via a gear pair.

[0013] Preferably, the fixture is a square frame structure, with a pressure plate for clamping the workpiece located at the center of its perimeter; a positioning stop for cooperating with the workpiece is provided on the top surface of the fixture.

[0014] Preferably, it also includes a control console, which is located near the end of the ground rail and is situated on one side of the loading and unloading station.

[0015] Secondly, the present invention provides a method for polishing fragile caps, employing the aforementioned positioning and clamping device, comprising the following steps: S1. The sliding table moves to the loading / unloading station; S2. Clamp the workpiece onto the fixture; S3. The sliding table moves to the grinding station; S4. Adjust the workpiece angle by rotating the rotary table and flipping the worktable, and then grind the workpiece. S5. After grinding is completed, the sliding table returns to the loading and unloading station and unloads the workpiece.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: (1) Achieve automatic angle adjustment and free up manpower: By controlling the rotation of the rotary table and the flipping of the worktable through the second drive mechanism and the third drive mechanism respectively, the spatial posture of the clamped workpiece can be automatically and accurately adjusted, completely replacing the time-consuming and laborious manual flipping operation, and significantly reducing labor intensity.

[0017] (2) Significantly improve production efficiency: The device can move quickly between the loading and unloading station and the grinding station, and the workpiece posture adjustment is driven by the motor. It is fast and accurate in positioning, and the entire grinding cycle time is greatly shortened, resulting in a qualitative improvement in production efficiency.

[0018] (3) Ensure processing accuracy and consistency: The rotation and flipping angles of the mechanical drive are precisely controlled by the motor, and the repeatability is high, ensuring that the grinding posture of each workpiece in batch processing is completely consistent, thereby ensuring the stability of product processing quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the positioning and clamping device provided by the present invention; Figure 2 This is a top view of the positioning and clamping device provided by the present invention; Figure 3 for Figure 2 Sectional view of AA; Figure 4 This is a top view of the workpiece after it has been clamped by the fixture. Figure 5 for Figure 4 BB section view.

[0021] Explanation of the reference numerals: 1. Ground rail; 2. Sliding table; 3. Rotary table; 4. Column; 5. Worktable; 6. Fixture; 6a. Positioning stop; 7. Rack; 8. Dust cover; 9. Dust collection box; 10. First motor; 11. Gear; 12. Second motor; 13. Worm gear mechanism; 13a. Worm gear; 13b. Worm; 14. Horizontal thrust bearing; 15. Rotating shaft; 16. Third motor; 17. Gear pair; 18. Pressure plate; 19. Control console. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0025] Combination Figures 1 to 5 As shown, this embodiment provides a positioning and clamping device for grinding fragile caps. Its core function is to realize automatic and precise posture adjustment of the workpiece (fragile cap) after clamping, so as to replace the time-consuming and laborious manual flipping operation.

[0026] Basic Structure and Movement Function: The ground rail 1 is securely and horizontally mounted on the ground using anchor bolts and other fasteners, forming the fixed base for the entire device. The sliding table 2, through its bottom slider engaging with the linear guide rail on the ground rail 1, can slide along the length of the ground rail 1, achieving high-precision linear motion. One end of the ground rail 1 is defined as a loading and unloading station, facilitating the operator's loading and unloading of workpieces; the other end is defined as a grinding station, with an automatic grinding tool (not shown in the figure) correspondingly arranged above it. The first drive mechanism is used to drive the movement of the sliding table 2. A rack 7 is fixedly mounted on one side of the ground rail 1. A first motor 10 is mounted on the sliding table 2, and a gear 22 is mounted on its output shaft. The gear 22 meshes with the rack 7. When the first motor 10 is powered on, it drives the gear 22 to rotate. Since the rack 7 is fixed, the gear 22 will roll along the rack 7, thereby driving the entire sliding table 2 and all its components to move linearly on the ground rail 1, realizing the switching between the loading and unloading station and the grinding station. This action can be controlled by the control console 19 located next to the loading and unloading station.

[0027] Rotation Function: The rotary table 3 is mounted on the top surface of the sliding table 2 via a planar thrust bearing 14, ensuring it can withstand vertical loads and rotate smoothly. A second drive mechanism drives the rotary table 3 to rotate around its own axis. The second drive mechanism consists of a second motor 12 and a worm gear mechanism 13; the second motor 12 is mounted on the side of the sliding table 2; the worm gear mechanism 13 is located within the inner cavity of the sliding table 2; the worm gear mechanism 13 includes a worm wheel 13a mounted on the bottom shaft of the rotary table 3 and a worm 13b connected to the output shaft of the second motor 12; the worm 13b meshes with the worm wheel 13a for transmission. When the second motor 12 starts, it drives the worm wheel 13a and the rotary table 3 to rotate via the worm 13b. The self-locking characteristic of the worm gear transmission ensures the stability of the rotary table when it stops at any angle.

[0028] The flipping function section: Two vertically fixed columns 4, spaced apart from each other, are fixedly installed on the top surface of the rotary table 3. The worktable 5 is rotatably mounted between the two columns 4 via rotating shafts 15 at both ends, allowing the worktable 5 to tilt and flip around a horizontal axis (the axis of the rotating shaft 15). A third drive mechanism is used to drive the worktable 5 to flip. The third drive mechanism includes a third motor 16 mounted on one of the columns 4, and the rotating shaft 15 on the column 4 is connected to the output shaft of the third motor 16 via a gear pair 17. The gear pair 17 includes a meshing driving gear and a driven gear. The driving gear is mounted on the output shaft of the third motor 16, and the driven gear is mounted on the rotating shaft 15. The third motor 16 drives the rotating shaft 15 to rotate through the gear pair 17, thereby driving the worktable 5 to flip.

[0029] Clamping and Dust Removal Section: A clamp 6 for clamping workpieces is installed on the worktable 5. The clamp 6 has a square frame structure, with a positioning stop 6a on its top surface that matches the shape of the fragile cover, and a movable pressure plate 18 in the center of its perimeter. During operation, the workpiece is placed into the positioning stop 6a and clamped by the pressure plate 18 to achieve clamping and positioning. On the top surface of the rotary table 3, directly below the worktable 5, a dust collection box 9 is fixedly installed to collect the debris that falls during the grinding process.

[0030] In addition, a dust cover 8 is provided on the ground rail 1 to prevent dust from entering the ground rail 1.

[0031] The positioning and clamping device also includes a control console 19, which is located near the end of the ground rail 1 and is situated on one side of the loading and unloading station. The control console 19 integrates control buttons, switches, and status indicators for the first motor 10, the second motor 12, and the third motor 16. The method for polishing fragile caps using this device includes the following steps: S1. The operator starts the first motor 10 through the control console 19, which drives the sliding table 2 to move to the loading and unloading station.

[0032] S2. At the loading and unloading station, place the fragile cover workpiece to be processed into the positioning stop 6a of the fixture 6, and use the pressure plate 18 to press and fix it.

[0033] S3. Operate the control panel 19 again to drive the sliding table 2 to move the clamped workpiece to the grinding station.

[0034] S4. Activate automatic grinding mode. The second motor 12 and the third motor 16 work together: the second motor 12 drives the rotary table 3 to rotate at a set angle and speed via the worm gear mechanism 13; simultaneously, the third motor 16 drives the worktable 5 to rotate as needed via the gear pair 17. Together, they allow the workpiece to automatically assume various required processing postures under the grinding tool, completing all-around grinding. Grinding dust falls into the dust collection box 9.

[0035] S5. After grinding is completed, drive the sliding table 2 back to the loading and unloading position. The operator releases the pressure plate 18 and removes the processed workpiece, thus completing one work cycle.

[0036] In summary, this invention, through its ingeniously integrated moving, rotating, and flipping drive mechanism, achieves automated adjustment of the spatial posture of the fragile cap during the polishing process, effectively solving the core problems of laborious and inefficient manual operation, and has significant practical value.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A positioning and clamping device for grinding fragile caps, characterized in that, It includes a horizontally installed ground rail (1) and a sliding platform (2) that can move along the ground rail (1). A rotary table (3) is installed on the sliding table (2); two columns (4) are vertically installed on the top surface of the rotary table (3), and the two columns (4) are arranged at intervals relative to each other; a flip-up worktable (5) is installed between the two columns (4); a clamp (6) for clamping workpieces is installed on the worktable (5). One end of the ground rail (1) is set as a loading and unloading station, and the other end is set as a grinding station; It also includes a first drive mechanism for driving the sliding table (2) to move, a second drive mechanism for driving the rotary table (3) to rotate, and a third drive mechanism for driving the worktable (5) to flip.

2. The positioning and clamping device according to claim 1, characterized in that, A dust collection box (9) is provided on the top surface of the rotary table (3), and the dust collection box (9) is located directly below the workbench (5).

3. The positioning and clamping device according to claim 1, characterized in that, A dust cover (8) is provided on the ground rail (1).

4. The positioning and clamping device according to claim 1, characterized in that, The first drive mechanism includes a rack (7), a first motor (10), and a gear (11). The rack (7) is installed on one side of the ground rail (1); The first motor (10) is mounted on the sliding table (2); The gear (11) is mounted on the output shaft of the first motor (21), and the gear (11) meshes with the rack (7).

5. The positioning and clamping device according to claim 1, characterized in that, The second drive mechanism is a second motor (12) and a worm gear mechanism (13). The second motor (12) is mounted on the sliding table (2); The worm gear mechanism (13) is disposed in the inner cavity of the sliding table (2); The worm gear mechanism (13) includes a worm wheel (13a) mounted on the bottom shaft of the rotary table (3) and a worm (13b) connected to the output shaft of the second motor (12); the worm (13b) meshes with the worm wheel (13a) for transmission.

6. The positioning and clamping device according to claim 1, characterized in that, The rotary table (3) is mounted on the top surface of the sliding table (2) via a planar thrust bearing (14).

7. The positioning and clamping device according to claim 1, characterized in that, The two ends of the workbench (5) are rotatably mounted on the column (4) via a pivot (15); The third drive mechanism includes a third motor (16) mounted on one of the columns (4), and the shaft (15) on the column (4) is connected to the output shaft of the third motor (16) via a gear pair (17).

8. The positioning and clamping device according to claim 1, characterized in that, The fixture (6) is a square frame structure, with a pressure plate (18) for pressing the workpiece at the center of its perimeter; a positioning stop (6a) for cooperating with the workpiece is provided on the top surface of the fixture (6).

9. The positioning and clamping device according to claim 1, characterized in that, It also includes a control console (19), which is located near the end of the ground rail (1) and is located on one side of the loading and unloading station.

10. A method for polishing fragile caps, characterized in that, The positioning and clamping device according to any one of claims 1 to 9 includes the following steps: S1. The sliding table (2) moves to the loading and unloading station; S2. Clamp the workpiece onto the fixture (6); S3, the sliding table (2) moves to the grinding station; S4. Adjust the workpiece angle by rotating the rotary table (3) and flipping the worktable (5), and then grind the workpiece. S5. After grinding, the sliding table (2) returns to the loading and unloading station and unloads the workpiece.

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