Civil aviation material polishing device convenient to clamp

Abstract

The utility model relates to material processing technical field, and a kind of civil aviation material polishing equipment of easy to hold;Sliding platform is slidably arranged on the upper portion of support platform by slide rail pair, and two multi-point suction disc flexible tooling are fixedly arranged on the upper portion of sliding platform, support shaft is fixedly arranged on the rear side of support frame, lifting mechanism connected with support shaft is equipped on support platform, overturning mechanism connected with lifting mechanism is equipped on support shaft, linkage switching mechanism connected with overturning mechanism is equipped on sliding platform, and one end of electric telescopic rod is equipped with clamp, by setting two independent multi-point suction disc flexible tooling, the different curvature of workpiece front and back two sides is respectively adapted, the profiling adsorption support of "one side one tooling" is realized, and the pure mechanical linkage of lifting mechanism, overturning mechanism and linkage switching mechanism is matched, automatic completion is taken piece, overturning, shift and reposition in one clamping cycle, without manual intervention, improve polishing precision and efficiency, reduce labor intensity and workpiece damage risk.

Description

Technical Field

[0001] This invention relates to the field of materials processing technology, and more specifically to a grinding device for civil aviation materials that is easy to clamp. Background Technology

[0002] In the manufacturing and maintenance of civil aviation materials (such as aluminum alloy skins, titanium alloy blades, and carbon fiber composite components), the surface grinding quality requirements are extremely high. Any scratches, indentations, or dimensional deviations can lead to component scrapping. Existing grinding equipment typically uses a single-station clamping method, meaning that after one side is ground, manual operation is required to remove, flip, re-clamp, and position the workpiece. This not only increases the labor intensity of operators but also results in large clamping and positioning errors, cumbersome procedures, and low processing efficiency. Furthermore, improper operation during manual operation can easily cause workpiece damage, further reducing the processing pass rate. To improve the drawbacks of manual flipping, some existing grinding equipment has attempted to use independent drive units to achieve flipping and station switching. However, such equipment requires complex electrical control systems and sensors, which not only makes the overall structure of the equipment complex and the manufacturing cost high but also suffers from response delays and insufficient operational reliability. It is difficult to achieve precise linkage between flipping actions and station switching, failing to meet the high-efficiency and high-precision grinding production requirements of civil aviation materials. Therefore, there is an urgent need for a civil aviation material grinding equipment that is easy to clamp. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a reasonably designed and easy-to-use civilian aviation material grinding device that can effectively solve the aforementioned defects in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a support platform, and a grinding robotic arm is provided on the upper left front side of the support platform;

[0005] It also includes:

[0006] A sliding platform is slidably mounted on the upper part of a support platform via a slide rail pair, and two multi-point suction cup flexible fixtures are fixedly installed on the upper part of the sliding platform.

[0007] A support frame is suspended above a sliding platform. A support shaft is fixedly installed on the rear side of the support frame. A lifting mechanism connected to the support shaft is provided on the support platform. A flipping mechanism connected to the lifting mechanism is provided on the support shaft. A linkage switching mechanism connected to the flipping mechanism is provided on the sliding platform.

[0008] The electric telescopic rod consists of several electric telescopic rods, which are fixedly installed on the left and right sides of the support frame, and one end of the electric telescopic rod is equipped with a clamp.

[0009] Through the above technical solution, two independent multi-point suction cup flexible fixtures are set up, and suction cup arrays are pre-configured according to the different curvatures of the front and back sides of the workpiece to achieve contour adsorption support of "one fixture per side". With the help of the lifting mechanism, the flipping mechanism and the linkage switching mechanism, the workpiece can be automatically picked up, flipped, transferred and repositioned from the first station to the second station in one clamping cycle.

[0010] Preferably, the lifting mechanism comprises:

[0011] A fixed frame is fixedly installed on the upper rear side of the support platform. A lifting block is movably installed in the lifting groove opened on the fixed frame. A connecting block is fixedly installed on the lifting block. The support shaft is rotatably mounted on the connecting block through a bearing.

[0012] The motor is fixedly mounted on the upper part of the fixed frame. A reciprocating screw is rotatably mounted in the lifting groove through a bearing. The lifting movable block is rotatably mounted on the reciprocating screw through a thread. The output shaft of the motor is connected to the reciprocating screw.

[0013] Through the above technical solution, the motor drives the reciprocating screw to drive the lifting block and support shaft to make precise lifting and lowering movements, realizing the complete action of the support frame grabbing the workpiece from above the first station, lifting it to the flipping height, and lowering it to the second station to place the workpiece. Moreover, the reciprocating screw structure allows the lifting block to automatically change direction without changing the motor rotation, simplifying the control system. At the same time, the self-locking characteristic of the screw can prevent accidental falling due to gravity during the lifting process, ensuring the safety of the workpiece during the transfer process.

[0014] Preferably, the lifting slot is provided with two bellows covers, one end of which is connected to the lifting block. The bellows cover expands or contracts as the lifting block moves, thus achieving a complete seal of the lifting slot. This prevents fine particles such as aluminum dust and carbon fiber debris generated during the grinding of aerospace materials from falling into the lifting slot, ensuring the long-term stability of the equipment and reducing the maintenance frequency.

[0015] Preferably, the flipping mechanism comprises:

[0016] The movable frame is slidably mounted on the upper part of the support platform between the fixed frame and the sliding platform via a slide rail pair. A push block is fixedly mounted on the bottom wall of the movable frame, and the upper left and right sides of the push block are inclined downwards outwards.

[0017] The flipping frame is fixedly sleeved on the support shaft. Both ends of the flipping frame are fixedly equipped with trigger rods. The trigger rods are in contact with the push block. The inner top wall of the moving frame is in contact with the trigger rods. The upper part of the moving frame is provided with a flipping opening that cooperates with the trigger rods.

[0018] The swing rod is fixedly installed at the rear end of the support shaft. A vertical rod is fixedly installed at the bottom of the connecting block. One end of the swing rod is provided with a spring connected to the vertical rod. Positioning rods are fixedly installed on both the left and right sides of the rear arm of the connecting block. The positioning rods are engaged with the swing rod in abutment.

[0019] The above technical solution utilizes the lifting motion as a power source to trigger the flipping action, eliminating the need for a separate flipping drive unit. When the lifting mechanism drives the support shaft to rise to the preset height, the trigger rod contacts the inner top wall of the moving frame to generate a component force, driving the flipping frame to rotate 180°. The swing rod and spring provide damping reset torque, and the positioning rod limits the flipping endpoint position. The pure mechanical linkage structure has low cost, high reliability, and precise matching between the flipping and lifting strokes.

[0020] Preferably, a rotating cylinder is rotatably sleeved on the trigger rod via a bearing. The rotating cylinder is configured to abut against the push block and the inner top wall of the moving frame. The rotating cylinder transforms the sliding contact between the trigger rod and the inclined surface of the push block and the inner top wall of the moving frame into a rolling contact, thereby reducing frictional resistance and wear on the contact surfaces.

[0021] Preferably, both ends of the spring are circular ring structures, and the two ends of the spring are respectively movably sleeved on the connecting rods at the ends of the swing rod and the vertical rod. The circular ring design of the spring eliminates the need for special hooks or welding fixation, and can be disassembled and assembled by hand, which facilitates daily inspection and replacement.

[0022] Preferably, the linkage switching mechanism includes:

[0023] The first rack is fixedly mounted on the front side wall of the movable frame. A rotating rod is rotatably inserted into the upper part of the support platform through a bearing. A first gear that meshes with the first rack is fixedly sleeved on the rotating rod.

[0024] The second gear is fixedly sleeved on the rotating rod at a position below the first gear, and the diameter of the second gear is larger than that of the first gear. A second rack that meshes with the second gear is fixedly installed on the rear side wall of the sliding platform.

[0025] The above technical solution can transmit the horizontal movement of the moving frame to the sliding platform, realizing the mechanical linkage between the "flipping action" and the "station switching action". The diameter of the second gear is larger than that of the first gear, which can form a speed-increasing transmission ratio. The moving frame can drive the sliding platform to move a large stroke with a small movement distance. The pure mechanical linkage does not require sensors and electrical control, and the response is zero delay, ensuring that the workpiece can reach the next station in a timely and accurate manner after the flipping is completed.

[0026] Preferably, a protective shell is fixedly installed on the rear side of the sliding platform, and the protective shell covers the linkage switching mechanism. The protective shell can enclose the first rack, the first gear, the second gear, the second rack and the rotating rod, preventing grinding dust from adhering to the tooth surface, avoiding wear or jamming of the gears and racks, and ensuring the long-term reliable operation of the linkage switching mechanism in a dusty environment.

[0027] Preferably, positioning sensors are fixedly installed on both the left and right sides of the upper part of the support platform. The positioning sensors are configured in conjunction with the sliding platform. The positioning sensors on the left and right sides correspond to the precise stop positions of the first and second working positions of the sliding platform, respectively, to prevent the sliding platform from overtraveling or failing to reach the correct position, and to ensure the positioning accuracy of the workpiece transfer.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. By setting up two independent multi-point suction cup flexible fixtures, the suction cup arrays are pre-configured according to the different curvatures of the front and back sides of the workpiece, realizing the contour adsorption support of "one fixture per side". This allows the workpiece to perfectly fit with the suction cup of the corresponding fixture during double-sided grinding, effectively avoiding local suspension or deformation under pressure caused by surface mismatch, improving the grinding accuracy and surface quality of thin-walled aerospace parts, and eliminating the need to readjust the fixture after each flip, simplifying the operation process.

[0030] 2. Through the mechanical linkage of the lifting mechanism, the flipping mechanism and the linkage switching mechanism, the workpiece can be automatically picked up, flipped, transferred and repositioned from the first station to the second station in one clamping cycle without manual intervention. This reduces manual operation steps, reduces the labor intensity of operators, and avoids workpiece damage caused by manual operation, thereby improving the processing qualification rate.

[0031] 3. The structure is simple, reliable and cost-controllable. It does not require an independent flipping drive unit and complex electrical control system and sensors. It uses the lifting action as the power source to trigger the flipping. Through pure mechanical linkage, it achieves precise coordination between flipping and workstation switching. This not only simplifies the equipment structure and reduces manufacturing costs, but also avoids the response delay problem caused by electrical control, improves the reliability of equipment operation and reduces maintenance costs.

[0032] 4. Two bellows covers that extend and retract with the lifting blocks are installed inside the lifting slot to achieve complete sealing of the lifting slot. At the same time, a protective shell is installed outside the linkage switching mechanism to effectively prevent fine particles such as aluminum dust and carbon fiber debris generated during the grinding of aerospace materials from entering the moving parts, avoiding wear or jamming of the lead screw and tooth surface, ensuring the long-term operational stability of the equipment, and reducing the maintenance frequency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the rear three-dimensional structure of the present invention.

[0035] Figure 3 for Figure 2 Enlarged view of part A in the image.

[0036] Figure 4 This is a schematic diagram of the flipping frame in this invention.

[0037] Figure 5 This is an exploded view of the support frame, support shaft, lifting mechanism, moving frame, and pushing block in this invention.

[0038] Figure 6 for Figure 5 Enlarged view of part B in the image.

[0039] Figure 7 This is a schematic diagram showing the connection between the sliding platform, the moving frame, and the linkage switching mechanism in this invention.

[0040] Figure 8 for Figure 7 Enlarged view of section C in the image.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Support platform; 2. Grinding robotic arm; 3. Sliding platform; 4. Multi-point suction cup flexible fixture; 5. Support frame; 6. Support shaft; 7. Lifting mechanism; 7-1. Fixed frame; 7-2. Lifting groove; 7-3. Lifting movable block; 7-4. Connecting block; 7-5. Motor; 7-6. Reciprocating screw; 8. Tilting mechanism; 8-1. Moving frame; 8-2. Push block; 8-3. Tilting frame; 8-4. Avoidance tilting opening; 8-5. Swing rod; 8-6. Vertical rod; 8-7. Spring; 8-8. Positioning rod; 8-9. Linkage switching mechanism; 9. Rack No. 1; 9-1. Rotating rod; 9-2. Gear No. 1; 9-3. Gear No. 2; 9-4. Rack No. 2; 9-5. Electric telescopic rod; 10. Clamp; 11. Bellows cover; 12. Rotating cylinder; 13. Protective shell; 14. Positioning sensor; 15. Detailed Implementation

[0043] The invention will now be further described with reference to the accompanying drawings.

[0044] Example 1:

[0045] like Figures 1-8 As shown, this embodiment includes a support platform 1, a grinding robotic arm 2, a sliding platform 3, a multi-point suction cup flexible tooling 4, a support frame 5, a support shaft 6, a lifting mechanism 7, an electric telescopic rod 10, a flipping mechanism 8, a linkage switching mechanism 9, and a clamp 11.

[0046] The support platform 1 is the base of this equipment. The grinding robot arm 2 is fixedly installed on the left front side of the upper part of the support platform 1 by bolts. The grinding robot arm 2 is used to grind the workpiece.

[0047] The sliding platform 3 is slidably mounted on the upper part of the support platform 1 via a slide rail pair. Two multi-point suction cup flexible fixtures 4 are fixedly mounted on the upper part of the sliding platform 3 by bolts. The two multi-point suction cup flexible fixtures 4 are arranged in the left and right direction, serving as the first station and the second station respectively. Each multi-point suction cup flexible fixture 4 contains multiple independently controlled vacuum suction cups, and the suction cup arrays of the two fixtures are pre-configured according to the different curvatures of the front and back sides of the aerospace workpiece to be ground, realizing the contour adsorption support of "one fixture per side".

[0048] A positioning sensor 15 is fixedly installed on each of the left and right sides of the upper part of the support platform 1 by bolts; the positions of the two positioning sensors 15 correspond to the stopping positions when the sliding platform 3 moves to the first station and the second station, respectively. The positioning sensors 15 are set in conjunction with the side edges of the sliding platform 3 to detect whether the sliding platform 3 has moved into place.

[0049] The support frame 5 is suspended above the sliding platform 3 to support the workpiece. Multiple electric telescopic rods 10 are fixed to the left and right sides of the support frame 5 by bolts. The extended ends of the electric telescopic rods 10 face inward. Each electric telescopic rod 10 has a clamp 11 fixed to its end by bolts. The clamping surface of the clamp 11 can be provided with a soft pad to avoid damaging the surface of the aerospace material workpiece. A support shaft 6 is welded to the rear side of the support frame 5. The support shaft 6 is arranged horizontally in the front-back direction. The support platform 1 is provided with a lifting mechanism 7 connected to the support shaft 6.

[0050] The lifting mechanism 7 includes a fixed frame 7-1, a lifting groove 7-2, a lifting movable block 7-3, a connecting block 7-4, a motor 7-5, and a reciprocating screw 7-6. The fixed frame 7-1 is bolted to the rear side of the upper part of the support platform 1. The fixed frame 7-1 has a vertically oriented lifting groove 7-2. The lifting movable block 7-3 is movably arranged in the lifting groove 7-2. The connecting block 7-4 is welded and fixed to the lifting movable block 7-3. The connecting block 7-4 is located on the right side of the fixed frame 7-1. The support shaft 6 is rotatably mounted on the connecting block 7-4 through a bearing, allowing the support shaft 6 to rotate freely relative to the connecting block 7-4. The motor 7-5 is bolted to the upper part of the fixed frame 7-1. The output shaft of the motor 7-5 extends downward into the lifting groove 7-2 and reciprocates with the screw 7-6. The lead screw 7-6 is connected and the reciprocating lead screw 7-6 is rotatably installed in the lifting groove 7-2 through the bearing. The lifting movable block 7-3 is rotatably sleeved on the reciprocating lead screw 7-6 through the thread. When the motor 7-5 drives the reciprocating lead screw 7-6 to rotate, the lifting movable block 7-3 drives the connecting block 7-4 and the support shaft 6 to move up and down reciprocally along the lifting groove 7-2. There are two bellows covers 12 in the lifting groove 7-2. One end of the two bellows covers 12 is connected to the upper and lower sides of the lifting movable block 7-3 respectively through bolts. The bellows covers 12 can be opened or closed as the lifting movable block 7-3 moves, so as to completely seal the lifting groove 7-2 and prevent small particles such as aluminum dust and carbon fiber debris generated by grinding from entering the reciprocating lead screw 7-6 and the guide rail pair, so as to ensure the long-term stable operation of the lifting mechanism 7.

[0051] The support shaft 6 is provided with a flipping mechanism 8 that is linked to the lifting mechanism 7, and a linkage switching mechanism 9 is provided between the sliding platform 3 and the flipping mechanism 8.

[0052] Example 2:

[0053] See Figures 1-7As shown, based on Embodiment 1, the flipping mechanism 8 and the linkage switching mechanism 9 are further defined. The flipping mechanism 8 includes a moving frame 8-1, a pushing block 8-2, a flipping frame 8-3, a trigger rod 8-4, a flipping opening 8-5, a swing rod 8-6, a vertical rod 8-7, a spring 8-8, and a positioning rod 8-9. The moving frame 8-1 is a rectangular frame structure, slidably mounted on the upper part of the support platform 1 via a slide rail pair, and located between the fixed frame 7-1 and the sliding platform 3. The moving frame 8-1 can move horizontally in the left and right directions. The pushing block 8-2 is fixedly mounted on the inner bottom wall of the moving frame 8-1 by bolts. The upper left and right sides of the pushing block 8-2 are both inclined surfaces that slope downwards outwards. The flipping frame 8-3 is fixedly mounted on the support shaft 6 by keys and bolts and is located in front of the connecting block 7-4. The trigger rod 8-4 is welded and fixedly mounted on the front sides of both the upper and lower ends of the flipping frame 8-3. The upper part of 1 has an avoidance flipping opening 8-5. In the initial state, the lower trigger rod 8-4 is movably abutted against the right vertical side wall of the push block 8-2. When the support shaft 6 rises to a certain height, the upper trigger rod 8-4 will abut against the inner top wall of the moving frame 8-1. The rear end of the support shaft 6 is welded and fixedly provided with a swing rod 8-6. The bottom of the connecting block 7-4 is welded and fixedly provided with a vertical rod 8-7. The vertical rod 8-7 extends vertically downward. A spring 8-8 is connected between the end of the swing rod 8-6 and the end of the vertical rod 8-7. Both ends of the spring 8-8 are circular ring structures. The two ends of the spring 8-8 are respectively movably sleeved on the connecting rod at the end of the swing rod 8-6 and the connecting rod at the end of the vertical rod 8-7. The left and right sides of the rear side wall of the connecting block 7-4 are welded and fixedly provided with positioning rods 8-9. The positioning rods 8-9 can limit the rotation angle of the support shaft 6, that is, limit the end position of the flipping.

[0054] The linkage switching mechanism 9 includes a first rack 9-1, a rotating rod 9-2, a first gear 9-3, a second gear 9-4, and a second rack 9-5. The first rack 9-1 is fixedly mounted on the front side wall of the moving frame 8-1 by bolts and extends horizontally. The rotating rod 9-2 is rotatably inserted into the upper part of the support platform 1 via bearings and is arranged vertically. The first gear 9-3 is fixedly mounted on the rotating rod 9-2 by keys and bolts, and the first gear 9-3 meshes with the first rack 9-1. The second gear 9-4 is fixedly mounted on the rotating rod 9-2 below the first gear 9-3 by keys and bolts. The second gear 9-4 is straight... The diameter of the first gear 9-3 is larger than that of the first gear 9-3, forming a speed-increasing transmission ratio. The second rack 9-5, which meshes with the second gear 9-4, is fixed on the rear side wall of the sliding platform 3 by bolts. When the moving frame 8-1 moves left and right, the first rack 9-1 drives the first gear 9-3 to rotate, which is transmitted to the second gear 9-4 through the rotating rod 9-2, thereby driving the second rack 9-5 and the sliding platform 3 to move left and right. Since the diameter of the second gear 9-4 is larger than that of the first gear 9-3, the moving frame 8-1 can drive the sliding platform 3 to move a large stroke with a small movement distance, realizing the pure mechanical linkage of the workstation switching action without the need for sensors and electrical control, and with zero response delay.

[0055] The linkage switching mechanism 9 is covered by a protective shell 14. The protective shell 14 is fixed to the rear side of the sliding platform 3 by bolts, and completely covers the first rack 9-1, the first gear 9-3, the second gear 9-4, the second rack 9-5 and the rotating rod 9-2 inside, preventing grinding dust from adhering to the tooth surface, avoiding wear or jamming of the gears and racks, and ensuring the long-term reliable operation of the linkage switching mechanism 9 in a dusty environment.

[0056] Example 3:

[0057] See Figure 6 As shown, based on Embodiment 2, a further improvement is made: a rotating cylinder 13 is rotatably mounted on the trigger rod 8-4 via a bearing. The rotating cylinder 13 can rotate freely around the trigger rod 8-4. The rotating cylinder 13 is configured to abut against the inclined surface of the push block 8-2 and the inner top wall of the moving frame 8-1. When the support shaft 6 is raised or lowered, a rolling contact is formed between the rotating cylinder 13 and the inclined surface of the push block 8-2 and the inner top wall of the moving frame 8-1, which transforms the sliding friction between the trigger rod 8-4 and the moving frame 8-1 and the push block 8-2 into rolling friction, reducing frictional resistance and wear on the contact surface, making the flipping action smoother and easier, and extending the service life of the trigger rod 8-4 and the push block 8-2.

[0058] When using this invention, the operator places the aerospace workpiece to be polished (e.g., aluminum alloy skin with different curvatures) on the left multi-point suction cup flexible fixture 4 with the front facing up, starts the vacuum system, and each suction cup independently adsorbs the bottom surface of the workpiece to achieve contour-fitting support. The polishing robot arm 2 polishes the front of the workpiece according to the preset path.

[0059] After the front surface is polished, the polishing robotic arm 2 retracts to a safe position, the electric telescopic rod 10 extends, and the clamp 11 at its end clamps the workpiece edge from both sides. Then, the motor 7-5 is started to drive the reciprocating screw 7-6 to rotate, causing the lifting block 7-3 to rise. The support frame 5 vertically lifts the workpiece from the left multi-point suction cup flexible fixture 4, removing it from the first station. The support shaft 6 drives the workpiece to continue rising. When the support shaft 6 rises to a certain height, the trigger rod 8-4 above abuts against the inner top wall of the moving frame 8-1. As the support shaft 6 continues to rise... The upper trigger rod 8-4 is subjected to the downward reaction force of the inner top wall of the moving frame 8-1, which causes the flipping frame 8-3 to drive the support shaft 6 to flip. The swing rod 8-6 fixed to the rear end of the support shaft 6 flips to the upper left. The spring 8-8 is stretched and stores the reset energy. When the support shaft 6 rises to the highest point, the swing rod 8-6 is tilted to the upper right at one end. Then the spring 8-8 shortens and drives the swing rod 8-6 to flip to the horizontal state and abut against the positioning rod 8-9 on the right. At this time, the flipping frame 8-3 and the workpiece complete a 180° flip.

[0060] Subsequently, the lifting block 7-3 descends via the continuous rotation of the reciprocating screw 7-6. When the trigger rod 8-4 located below contacts the inclined sidewall on the upper left side of the push block 8-2, the trigger rod 8-4 slides downward along the inclined sidewall, generating a horizontal force to the right on the push block 8-2, pushing the moving frame 8-1 to move horizontally to the right. When the moving frame 8-1 moves to the right, the first rack 9-1 drives the first gear 9-3 to rotate, which in turn drives the second gear 9-4 below to rotate in the same direction via the rotating rod 9-2. The meshing of the second gear 9-4 with the second rack 9-5 drives the sliding platform 3 to move horizontally to the left. Due to the diameter of the second gear 9-4... A smaller rightward movement of the moving frame 8-1, greater than gear 9-3, can drive a larger leftward movement of the sliding platform 3. When the trigger rod 8-4 below comes into contact with the vertical side wall on the left side of the push block 8-2, the sliding platform 3 switches from the first station to the second station, that is, the multi-point suction cup flexible fixture 4 on the right moves to directly below the support frame 5. Then the support shaft 6 can drive the support frame 5 to continue to descend until the workpiece is placed on the multi-point suction cup flexible fixture 4 on the right with its reverse side facing up. Then the vacuum system of the multi-point suction cup flexible fixture 4 on the right is activated, and the suction cup firmly adsorbs the reverse side of the workpiece. The grinding robot arm 2 grinds the reverse side of the workpiece according to the preset path.

[0061] Compared with the prior art, the beneficial effects of this specific embodiment are as follows:

[0062] 1. By setting two independent multi-point suction cup flexible fixtures 4, the suction cup arrays are pre-configured according to the different curvatures of the front and back sides of the workpiece, realizing the contour adsorption support of "one fixture per side", so that the workpiece can perfectly fit with the suction cup of the corresponding fixture during double-sided grinding, effectively avoiding local suspension or pressure deformation caused by surface mismatch, improving the grinding accuracy and surface quality of thin-walled aerospace parts, and at the same time, there is no need to readjust the fixture after each flip, simplifying the operation process;

[0063] 2. Through the mechanical linkage of lifting mechanism 7, flipping mechanism 8 and linkage switching mechanism 9, the workpiece can be automatically picked up, flipped, transferred and repositioned from the first station to the second station in one clamping cycle without manual intervention. This reduces manual operation steps, reduces the labor intensity of operators, and avoids workpiece damage caused by manual operation, thereby improving the processing qualification rate.

[0064] 3. The structure is simple, reliable and cost-controllable. It does not require an independent flipping drive unit and complex electrical control system and sensors. It uses the lifting action as the power source to trigger the flipping. Through pure mechanical linkage, it achieves precise coordination between flipping and workstation switching. This not only simplifies the equipment structure and reduces manufacturing costs, but also avoids the response delay problem caused by electrical control, improves the reliability of equipment operation and reduces maintenance costs.

[0065] 4. Two bellows covers 12 that extend and retract with the lifting blocks are installed inside the lifting groove 7-2 to achieve complete sealing of the lifting groove 7-2. At the same time, a protective shell 14 is installed outside the linkage switching mechanism 9 to effectively prevent fine particles such as aluminum dust and carbon fiber debris generated during the grinding of aerospace materials from entering the moving parts, avoiding wear or jamming of the lead screw and tooth surface, ensuring the long-term operational stability of the equipment, and reducing the maintenance frequency.

[0066] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A grinding device for civil aviation materials that is easy to clamp, comprising a support platform (1) and a grinding robotic arm (2) on the upper left front side of the support platform (1). Its features are, It contains: The sliding platform (3) is slidably mounted on the upper part of the support platform (1) via a slide rail pair. Two multi-point suction cup flexible fixtures (4) are fixedly mounted on the upper part of the sliding platform (3). Support frame (5), the support frame (5) is suspended above the sliding platform (3), a support shaft (6) is fixedly installed on the rear side of the support frame (5), a lifting mechanism (7) connected to the support shaft (6) is provided on the support platform (1), a flipping mechanism (8) connected to the lifting mechanism (7) is provided on the support shaft (6), and a linkage switching mechanism (9) connected to the flipping mechanism (8) is provided on the sliding platform (3). Electric telescopic rod (10), there are several electric telescopic rods (10), which are fixedly installed on the left and right sides of the support frame (5), and one end of the electric telescopic rod (10) is provided with a clamp (11).

2. The easy-to-grip civil aviation material grinding equipment according to claim 1, characterized in that: The lifting mechanism (7) includes: A fixed frame (7-1) is fixedly installed on the upper rear side of the support platform (1). A lifting movable block (7-3) is movably installed in the lifting groove (7-2) opened on the fixed frame (7-1). A connecting block (7-4) is fixedly installed on the lifting movable block (7-3). The support shaft (6) is rotatably installed on the connecting block (7-4) through the bearing. The motor (7-5) is fixedly mounted on the upper part of the fixed frame (7-1). A reciprocating screw (7-6) is rotatably mounted in the lifting groove (7-2) through a bearing. The lifting movable block (7-3) is rotatably mounted on the reciprocating screw (7-6) through a thread. The output shaft of the motor (7-5) is connected to the reciprocating screw (7-6).

3. The easy-to-grip civil aviation material grinding equipment according to claim 2, characterized in that: The lifting groove (7-2) is provided with two bellows covers (12), one end of which is connected to the lifting movable block (7-3).

4. The easy-to-grip civil aviation material grinding equipment according to claim 2, characterized in that: The flipping mechanism (8) includes: The movable frame (8-1) is slidably mounted on the upper part of the support platform (1) between the fixed frame (7-1) and the sliding platform (3) via a slide rail pair. A push block (8-2) is fixedly mounted on the bottom wall of the movable frame (8-1). The upper left and right sides of the push block (8-2) are both inclined downwards outwards. A flipping frame (8-3) is fixedly sleeved on a support shaft (6). Both ends of the flipping frame (8-3) are fixedly provided with trigger rods (8-4). The trigger rods (8-4) are in contact with the push block (8-2). The inner top wall of the moving frame (8-1) is in contact with the trigger rods (8-4). The upper part of the moving frame (8-1) is provided with a clearance flipping opening (8-5) that cooperates with the trigger rods (8-4). A swing rod (8-6) is fixedly installed at the rear end of the support shaft (6). A vertical rod (8-7) is fixedly installed at the bottom of the connecting block (7-4). One end of the swing rod (8-6) is provided with a spring (8-8) connected to the vertical rod (8-7). Positioning rods (8-9) are fixedly installed on both the left and right sides of the rear arm of the connecting block (7-4). The positioning rods (8-9) are engaged with the swing rod (8-6) in abutment.

5. The easy-to-grip civil aviation material grinding equipment according to claim 4, characterized in that: The trigger rod (8-4) is fitted with a rotating cylinder (13) via a bearing. The rotating cylinder (13) is engaged with the push block (8-2) and the inner top wall of the moving frame (8-1).

6. The easy-to-grip civil aviation material grinding equipment according to claim 4, characterized in that: Both ends of the spring (8-8) are circular ring structures, and the two ends of the spring (8-8) are respectively movably sleeved on the connecting rods at the ends of the swing rod (8-6) and the vertical rod (8-7).

7. The easy-to-grip civil aviation material grinding equipment according to claim 4, characterized in that: The linkage switching mechanism (9) includes: A rack (9-1) is fixedly mounted on the front side wall of the movable frame (8-1). A rotating rod (9-2) is inserted into the upper part of the support platform (1) through a bearing. A gear (9-3) that meshes with the rack (9-1) is fixedly mounted on the rotating rod (9-2). The second gear (9-4) is fixedly sleeved on the rotating rod (9-2) at a position below the first gear (9-3), and the diameter of the second gear (9-4) is larger than that of the first gear (9-3). The second rack (9-5) that meshes with the second gear (9-4) is fixedly installed on the rear side wall of the sliding platform (3).

8. The easy-to-grip civil aviation material grinding equipment according to claim 7, characterized in that: The sliding platform (3) is fixedly provided with a protective shell (14) on the rear side, and the protective shell (14) covers the linkage switching mechanism (9).

9. A civilian aviation material grinding device for easy clamping according to claim 1, characterized in that: Positioning sensors (15) are fixedly installed on both the left and right sides of the upper part of the support platform (1), and the positioning sensors (15) are configured in conjunction with the sliding platform (3).

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