A polishing clamping mechanism adaptive to the curvature of a workpiece

Abstract

The utility model relates to machining equipment technical field especially relates to a kind of polishing clamping mechanism that can adapt to workpiece camber, including base, controller, mounting seat, hydraulic oil cylinder, center arm, guide block assembly, branch and clamping roller etc., base left side is equipped with controller, base top is fixedly connected with mounting seat, center arm is slidably arranged in mounting seat middle part, hydraulic oil cylinder is fixedly installed in base top rear side, the piston rod of hydraulic oil cylinder is fixedly connected with center arm rear end, center arm left and right sides are equipped with wedge bevel, center arm front end is rotatably connected with clamping roller, two oppositely arranged branchs are hinged respectively through pivot in mounting seat left and right sides.The utility model is pushed by hydraulic oil cylinder and center arm slides, utilizes the rolling cooperation of wedge bevel and branch rear end transmission roller, drives two branchs synchronous swing around pivot, realizes the self-adapting clamping of clamping roller to different camber workpiece, reaches the effect that clamping is stable and strong in versatility.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a polishing clamping mechanism that can adapt to the curvature of a workpiece. Background Technology

[0002] During the surface polishing process of metal or non-metal workpieces, the clamping device must ensure the stability of the workpiece under high-speed grinding or friction to avoid affecting the processing quality due to vibration or slippage. For workpieces with curved surfaces, such as pipes, housings, and crankshafts, traditional clamping mechanisms often use rigid clamps or universal chucks. The small contact area during clamping can easily cause local stress concentration, leading to workpiece deformation or surface scratches. At the same time, the clamping force is difficult to automatically adjust according to the curvature of the workpiece, resulting in poor versatility and requiring frequent clamp replacements, which affects production efficiency.

[0003] Furthermore, existing clamping structures often lack real-time monitoring and feedback control of clamping force, making it impossible to achieve constant force clamping. Especially when dealing with softer materials or thin-walled curved workpieces, excessive clamping force can easily damage the workpiece, while insufficient clamping force can cause the workpiece to loosen during processing, posing safety hazards. Simultaneously, the large amount of fine dust generated during polishing tends to accumulate in the clamping area, affecting clamping stability and potentially entering the moving parts of the equipment, causing wear. Existing devices generally lack effective dust drainage and protection measures, resulting in a poor working environment and frequent equipment maintenance.

[0004] Therefore, it is necessary to design a polishing clamping mechanism that can adapt to the curvature of the workpiece in order to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing polishing clamping mechanisms, such as poor adaptability to clamping curved workpieces, uncontrollable clamping force, easy deformation or slippage of workpieces, and lack of effective dust treatment function, this utility model provides a polishing clamping mechanism that can adapt to the curvature of the workpiece.

[0006] The technical implementation scheme of this utility model is as follows: a polishing clamping mechanism adaptable to the curvature of a workpiece includes a base, a controller, a mounting base, a hydraulic cylinder, a central arm, a guide block assembly, a support arm, clamping rollers, a pressure sensor, and an anti-slip pad. The controller is located on the left side of the base, and the mounting base is fixedly connected to the top of the base. The central arm is slidably mounted in the middle of the mounting base. The hydraulic cylinder is fixedly mounted on the rear side of the top of the base. The piston rod of the hydraulic cylinder is fixedly connected to the rear end of the central arm. The left and right sides of the central arm are provided with wedge-shaped inclined surfaces. The front end of the central arm is rotatably connected to a clamping roller. The left and right sides of the mounting base are respectively hinged to two opposing support arms through a rotating shaft. The front end of the support arm is rotatably connected to a clamping roller, and the rear end is rotatably connected to a transmission roller. The transmission rollers roll in contact with the wedge-shaped inclined surfaces on both sides of the central arm. A guide block assembly is provided between the inner side wall of the mounting base and the support arm. The guide block assembly is provided with double guide grooves, which slide in cooperation with the support arm and the wedge-shaped inclined surface, respectively. A pressure sensor is embedded in the center of the periphery of each clamping roller. An anti-slip pad is provided along the circumferential direction on the outer circumference of the clamping roller. The pressure sensor is electrically connected to the controller.

[0007] Optionally, it also includes a first mounting frame, which is fixedly connected to the top of the base and covers the periphery of the mounting base and the hydraulic cylinder.

[0008] Optionally, it also includes a filter screen and a waste frame. A platform is provided on the front side of the first mounting frame. A through groove is opened in the middle of the platform. A filter screen is provided at the top of the through groove. A waste frame is slidably connected to the front side of the base. The waste frame is located below the platform. The through groove of the platform and the waste frame are interconnected.

[0009] Optionally, it also includes a second mounting frame and a fan. The second mounting frame is provided on the upper front side of the first mounting frame. Multiple fans are installed inside the second mounting frame. The fans are tilted towards the filter screen on the top of the shelf. Multiple ventilation holes are opened on the top of the first mounting frame and the second mounting frame. The fans are electrically connected to the controller.

[0010] Optionally, it also includes limiting blocks, with L-shaped limiting blocks fixedly connected to the left and right sides of the vent at the top of the first mounting frame.

[0011] Optionally, it also includes a filter plate, with protrusions on the left and right sides of the filter plate that are adapted to the limiting block. The filter plate covers the upper part of the vent hole through the contact and cooperation between the protrusions and the limiting block.

[0012] The present invention has the following advantages: 1. The present invention uses a hydraulic cylinder to push the center arm to slide, and utilizes the rolling cooperation between its wedge-shaped inclined surface and the transmission roller at the rear end of the support arm to drive the two arms to swing synchronously around the rotating axis, thereby realizing the adaptive clamping of the clamping roller for workpieces with different curvatures, achieving the effect of stable clamping and strong versatility.

[0013] 2. This utility model achieves the effect of preventing workpiece slippage and avoiding clamping damage by setting anti-slip pads around the clamping rollers, combining pressure sensors to monitor the clamping force in real time, and dynamically adjusting the hydraulic output by the controller.

[0014] 3. This utility model achieves the effect of smooth dust collection, preventing blockage and avoiding dust backflow to contaminate the processing area by setting a channel and filter screen on the platform, and using a fan to blow the filter screen. The airflow is discharged through the ventilation holes with filter plates. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the mounting base, hydraulic cylinder, and center arm of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the components of this utility model, including the clamping roller, pressure sensor, and anti-slip pad.

[0018] Figure 4 This is a schematic diagram of the structure of the filter screen, second mounting frame, and filter plate of this utility model.

[0019] Figure 5 This is a structural diagram of the second mounting frame, fan, and limit block of this utility model.

[0020] In the above attached diagram: 1: base, 2: controller, 3: first mounting frame, 4: mounting seat, 5: hydraulic cylinder, 6: center arm, 7: guide block assembly, 8: support arm, 9: clamping roller, 10: pressure sensor, 11: anti-slip pad, 12: filter screen, 13: waste box, 14: second mounting frame, 15: fan, 16: vent hole, 17: limit block, 18: filter plate. Detailed Implementation

[0021] Example: A polishing clamping mechanism adaptable to the curvature of a workpiece, such as... Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the device includes a base 1, a controller 2, a mounting base 4, a hydraulic cylinder 5, a central arm 6, a guide block assembly 7, a support arm 8, clamping rollers 9, a pressure sensor 10, and an anti-slip pad 11. The controller 2 is located on the left side of the base 1. The mounting base 4 is bolted to the top of the base 1. The central arm 6 is slidably mounted in the middle of the mounting base 4. The hydraulic cylinder 5 is fixedly mounted on the rear top of the base 1. The piston rod of the hydraulic cylinder 5 is bolted to the rear end of the central arm 6. The central arm 6 has wedge-shaped inclined surfaces on both sides. The clamping rollers 9 are rotatably connected to the front end of the central arm 6. 4. Two opposing support arms 8 are hinged to the left and right sides via pivots. The front end of the support arm 8 is rotatably connected to a clamping roller 9, and the rear end is rotatably connected to a transmission roller. The transmission roller makes rolling contact with the wedge-shaped inclined surfaces on both sides of the central arm 6. A guide block assembly 7 is provided between the inner wall of the mounting base 4 and the support arm 8. The guide block assembly 7 is provided with double guide grooves, which slide and cooperate with the support arm 8 and the wedge-shaped inclined surfaces respectively. A pressure sensor 10 is embedded in the center of the periphery of each clamping roller 9. An anti-slip pad 11 is provided on the outer circumferential surface of the clamping roller 9 along the circumferential direction. The pressure sensor 10 is electrically connected to the controller 2.

[0022] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it also includes a first mounting frame 3, a filter screen 12, a waste frame 13, a second mounting frame 14, a fan 15, a limiting block 17, and a filter plate 18. The top of the base 1 is connected to the first mounting frame 3 by bolts. The first mounting frame 3 covers the mounting base 4 and the hydraulic cylinder 5. A platform is provided on the front side of the first mounting frame 3. A through groove is opened in the middle of the platform. The filter screen 12 is provided on the top of the through groove. The waste frame 13 is slidably connected to the front side of the base 1. The waste frame 13 is located below the platform. The through groove of the platform is connected to the waste frame 13. The upper front side of the first mounting frame 3 A second mounting frame 14 is provided, and multiple sets of fans 15 are installed inside the second mounting frame 14. The fans 15 are inclined towards the filter screen 12 on the top of the shelf. Multiple ventilation holes 16 that are adapted to each other are opened on the top of the first mounting frame 3 and the second mounting frame 14. L-shaped limit blocks 17 are connected to the left and right sides of the ventilation holes 16 on the top of the first mounting frame 3 by bolts. The filter plate 18 has protrusions that are adapted to the limit blocks 17 on the left and right sides. The filter plate 18 covers the upper part of the ventilation holes 16 through the contact cooperation between the protrusions and the limit blocks 17. The fans 15 are electrically connected to the controller 2.

[0023] When it is necessary to clamp the workpiece, the controller 2 activates the hydraulic cylinder 5, pushes the piston rod forward, and drives the center arm 6 to slide forward in the movable groove of the mounting base 4, while the wedge-shaped inclined surfaces on both sides move forward synchronously.

[0024] The wedge-shaped inclined surface rolls into contact with the transmission roller at the rear end of the support arm 8. As the central arm 6 moves forward, the wedge-shaped inclined surface pushes the transmission roller, causing the two support arms 8 to swing towards each other around the axis of rotation. The clamping roller 9 at the front end of the support arm 8 gradually closes and fits against the surface of the workpiece. The double guide groove in the guide block assembly 7 guides the support arm 8 and the wedge-shaped inclined surface to ensure smooth and synchronous movement and avoid jamming.

[0025] The clamping rollers 9 are equipped with anti-slip pads 11 to increase the friction between them and the workpiece, preventing the workpiece from sliding or shifting during the polishing process. Each clamping roller 9 is equipped with a pressure sensor 10 to detect the clamping force in real time and transmit it to the controller 2. The system adjusts the pressure of the hydraulic cylinder 5 accordingly to achieve adaptive control of the clamping force, thus avoiding damage to the workpiece or unstable clamping.

[0026] The blower 15 is installed in the second mounting frame 14, with the air outlet tilted and aligned with the filter screen 12. When running, it generates airflow to blow away the surface of the workpiece being processed, and the grinding powder falls through the filter screen 12 into the waste box 13 below, so as to achieve centralized collection of waste and facilitate cleaning.

[0027] The filter plate 18 is installed above the vent 16 by the cooperation of the protrusion and the L-shaped limiting block 17. It can filter the particles in the exhaust airflow, prevent dust from overflowing or foreign objects from entering the processing area, and protect the fan 15 from dust intrusion, so as to keep the equipment clean and stable.

[0028] After polishing, the hydraulic cylinder 5 retracts, causing the center arm 6 to move backward. The wedge-shaped inclined surface disengages from the transmission roller, and the support arm 8 swings in the opposite direction under the guidance of the structure. The clamping roller 9 releases the workpiece, completing the unloading action.

[0029] The entire process is smooth and stable, adapting to the processing needs of workpieces with different curvatures. It integrates chip removal and dust prevention functions, improving work efficiency and environmental cleanliness.

Claims

1. A polishing clamping mechanism adaptable to the curvature of a workpiece, characterized in that: The system includes a base (1), a controller (2), a mounting base (4), a hydraulic cylinder (5), a central arm (6), a guide block assembly (7), a support arm (8), clamping rollers (9), a pressure sensor (10), and an anti-slip pad (11). The controller (2) is located on the left side of the base (1). The mounting base (4) is fixedly connected to the top of the base (1). The central arm (6) is slidably mounted in the middle of the mounting base (4). The hydraulic cylinder (5) is fixedly mounted on the rear side of the top of the base (1). The piston rod of the hydraulic cylinder (5) is fixedly connected to the rear end of the central arm (6). The central arm (6) has wedge-shaped inclined surfaces on both sides. The clamping rollers (9) are rotatably connected to the front end of the central arm (6). The left and right sides of the seat (4) are respectively hinged by a pivot to two opposing support arms (8). The front end of the support arm (8) is rotatably connected to a clamping roller (9), and the rear end is rotatably connected to a transmission roller. The transmission roller rolls in contact with the wedge-shaped inclined surfaces on both sides of the central arm (6). A guide block assembly (7) is provided between the inner wall of the mounting seat (4) and the support arm (8). The guide block assembly (7) is provided with double guide grooves, which slide in cooperation with the support arm (8) and the wedge-shaped inclined surface respectively. A pressure sensor (10) is embedded in the middle of the periphery of each clamping roller (9). An anti-slip pad (11) is provided on the outer circumferential surface of the clamping roller (9) along the circumferential direction. The pressure sensor (10) is electrically connected to the controller (2).

2. A polishing clamping mechanism adaptable to the curvature of a workpiece according to claim 1, characterized in that: It also includes a first mounting frame (3), which is fixedly connected to the top of the base (1). The first mounting frame (3) covers the periphery of the mounting base (4) and the hydraulic cylinder (5).

3. A polishing clamping mechanism adaptable to the curvature of a workpiece according to claim 2, characterized in that: It also includes a filter screen (12) and a waste frame (13). A platform is provided on the front side of the first mounting frame (3). A through groove is opened in the middle of the platform. A filter screen (12) is provided on the top of the through groove. A waste frame (13) is slidably connected to the front side of the base (1). The waste frame (13) is located below the platform. The through groove of the platform is connected to the waste frame (13).

4. A polishing clamping mechanism adaptable to the curvature of a workpiece according to claim 3, characterized in that: It also includes a second mounting frame (14) and a fan (15). The second mounting frame (14) is provided on the upper front side of the first mounting frame (3). Multiple sets of fans (15) are installed inside the second mounting frame (14). The fans (15) are tilted towards the filter screen (12) on the top of the shelf. Multiple ventilation holes (16) are opened on the top of the first mounting frame (3) and the second mounting frame (14). The fans (15) are electrically connected to the controller (2).

5. A polishing clamping mechanism adaptable to the curvature of a workpiece according to claim 4, characterized in that: It also includes a limiting block (17), and L-shaped limiting blocks (17) are fixedly connected to the left and right sides of the vent hole (16) at the top of the first mounting frame (3).

6. A polishing clamping mechanism adaptable to the curvature of a workpiece according to claim 5, characterized in that: It also includes a filter plate (18), with protrusions on the left and right sides of the filter plate (18) that are compatible with the limiting block (17). The filter plate (18) covers the upper part of the vent (16) through the contact and cooperation between the protrusions and the limiting block (17).

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