Multi-degree-of-freedom workpiece grinding and clamping mechanism

Abstract

The invention discloses a multi-degree-of-freedom workpiece grinding and clamping mechanism, and belongs to the field of workpiece grinding. Comprising a case and a hydraulic rod, and the hydraulic rod is detachably connected with a top plate through a connecting assembly; a supporting mechanism is arranged on one side of the bottom of the top plate and comprises a supporting frame, and a clamping mechanism used for clamping a workpiece is arranged in the supporting frame. When the edge of a workpiece is polished, an electric telescopic rod is started and contracted, locking of a limiting block on a clamping plate is relieved, and a first threaded cylinder is in a movable state; then, a second servo motor is started, a driving rod drives a gear block to rotate, then a clamping tooth disc is driven to rotate through lantern ring teeth, finally, a second threaded cylinder rotates in a supporting frame, the clamped workpiece is driven to rotate together, and the edge of the workpiece is accurately ground; and in the whole operation process, the polishing angle of the workpiece is adjusted by accurately controlling the rotating angle of the driving rod, and the unpolished face is turned over to facilitate subsequent polishing.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece grinding, and more specifically, to a multi-degree-of-freedom workpiece grinding and clamping mechanism. Background Art

[0002] In the fields of material microstructure analysis and precision machining, high-quality preparation of the workpiece surface is the key to ensuring the observation accuracy. With the increasing complexity of industrial component designs (such as multi-curved structures, miniaturized components), higher requirements are put forward for the adaptability, processing stability, and operation efficiency of surface treatment equipment. Especially for workpieces with irregular shapes or those requiring multi-angle processing, achieving precise positioning and uniform force application has become the core challenge in improving the preparation quality.

[0003] Currently, in traditional processes, a handheld direct processing method is often used, that is, an operator manually presses the workpiece on the surface of a high-speed rotating polishing turntable, visually judges the contact angle, and adjusts the applied force size based on experience, and sequentially replaces abrasives or polishing consumables with different particle sizes to complete the entire processing process; although this method has a certain degree of flexibility and is suitable for the processing of some non-standard samples, there are still many deficiencies in actual operation; for example, pressure fluctuations are likely to occur during the manual force application process, resulting in uneven surface stress and affecting processing consistency; especially when processing hard and brittle materials, it is easy to cause edge breakage, surface peeling, and even thermal damage, seriously affecting the sample quality. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a multi-degree-of-freedom workpiece grinding and clamping mechanism, aiming to solve the above technical problems.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A multi-degree-of-freedom workpiece grinding and clamping mechanism includes a machine case. Cooling nozzles are installed on both sides of the upper surface of the machine case. Grinding components are symmetrically arranged on both sides inside the machine case. A hydraulic rod is fixedly connected to the upper surface of the machine case. A connecting component is arranged at the top of the hydraulic rod. The hydraulic rod is detachably connected to a top plate through the connecting component. A support mechanism is arranged on one side of the bottom of the top plate. The support mechanism includes a support frame arranged on one side of the bottom of the top plate. The two ends of the support frame are respectively rotatably connected to a first threaded cylinder and a second threaded cylinder. Limiting components are arranged on the outer circumferential surfaces of the first threaded cylinder and the second threaded cylinder for locking their rotational degrees of freedom; and a clamping mechanism for clamping the workpiece is arranged inside the support frame; Among them, the clamping mechanism includes a first limiting rod and a second limiting rod respectively threadedly connected to the inside of the first threaded cylinder and the second threaded cylinder, and one ends of the first limiting rod and the second limiting rod are respectively fixedly connected with a first clamping plate and a second clamping plate. And a regulating component for adjusting the grinding angle of the workpiece is arranged on one side of the outer surface of the support frame; The hydraulic rod drives the top plate to press down, so that the clamped workpiece contacts the grinding component, and the position of the clamping mechanism is locked by the limiting component. Then, the regulating component is used to drive the second threaded cylinder to rotate, driving the workpiece to flip to adjust the grinding angle.

[0007] As a further scheme of the present invention: the limiting component includes a first baffle plate and a clamping plate respectively fixedly connected to both ends of the outer cylindrical surface of the first threaded cylinder, and clamping grooves are formed at the top and bottom of the clamping plate. An electric telescopic rod fixedly connected with the support frame is arranged at the top of the clamping plate, and a limiting block for limiting the clamping plate is fixedly connected to one end of the electric telescopic rod. Second baffle plates and a toothed disc are respectively fixedly connected to both ends of the outer cylindrical surface of the second threaded cylinder.

[0008] As a further scheme of the present invention: the regulating component includes a second servo motor fixedly connected to one side of the outer surface of the support frame. The output end of the second servo motor is fixedly connected with a driving rod, and a gear block is fixedly connected to one end of the driving rod. A sleeve gear is sleeved on the outer surface of the toothed disc, and the sleeve gear is meshed with the gear block.

[0009] As a further scheme of the present invention: the grinding component includes grinding tables fixedly connected to both sides inside the machine box. The upper surface of the grinding table is covered with sandpaper, and a locking cover for fixing the sandpaper is threadedly connected to the top of the grinding table. And a locking ring matched with the locking cover is formed at the outer edge of the top of the grinding table. A splash-proof cover fixedly connected with the machine box is arranged on the outer surface of the grinding table; the connecting component includes a support rod fixedly connected to the top of the hydraulic rod. The top of the support rod is fixedly connected with a locking rod. The top plate is sleeved on the outer cylindrical surface of the support rod, and a support plate fixedly connected with the support rod is arranged at the bottom of the top plate. A locking sleeve for limiting the support plate is threadedly connected to the outer cylindrical surface of the locking rod.

[0010] As a further solution of the present invention: A transmission mechanism fixedly connected to the top plate is provided directly above the support frame, and a driving mechanism for driving the transmission mechanism to change the angle of the support frame is provided on the other side of the bottom of the top plate. The transmission mechanism includes a U-shaped limit frame fixedly connected to one side of the bottom of the top plate. A driven gear is rotatably connected inside the U-shaped limit frame, and a support rod for supporting the driven gear is fixedly connected inside the U-shaped limit frame. Arc-shaped grooves are formed on both sides of the outer surface of the U-shaped limit frame. A support arm is fixedly connected to the top of the support frame, and the support arm passes through the arc-shaped groove and is fixedly connected to the driven gear to ensure synchronous movement.

[0011] As a further solution of the present invention: The transmission mechanism further includes a U-shaped bracket fixedly connected to the middle of the bottom of the top plate. A main gear is rotatably connected inside the U-shaped bracket, and the main gear is meshed with the driven gear. The driving mechanism is used to rotate the main gear and the driven gear to adjust the offset angle of the support frame.

[0012] As a further solution of the present invention: The driving mechanism includes a limit frame fixedly connected to the other side of the top of the top plate. A limit groove is formed on one side of the outer surface of the limit frame. A first servo motor is fixedly connected to the inner top of the limit frame. The output end of the first servo motor is fixedly connected to a threaded rod. A threaded sleeve is threadedly connected to the outer circular surface of the threaded rod. A slide plate is fixedly connected to one side of the outer circular surface of the threaded sleeve. The slide plate passes through the limit groove and is fixedly connected to a toothed plate. A chute is formed on the top plate directly above the toothed plate. The toothed plate is meshed with the toothed plate.

[0013] As a further solution of the present invention: A spraying assembly for flushing impurities on the surface of the workpiece is provided on the inner top of the support frame. The spraying assembly includes a fixed rod fixedly connected to the inner top of the support frame. A sleeve is rotatably connected to the outer circular surface of the fixed rod. A spraying plate is fixedly connected to the bottom of the sleeve. A connecting pipe is fixedly connected and communicated with one side of the top of the spraying plate. One end of the connecting pipe passes through the inside of the top plate and is connected to the water outlet end of the cooling spray head to provide water flow for the spraying plate.

[0014] As a further solution of the present invention: An adsorption mechanism for adsorbing debris on the surface of the workpiece is further provided on one side of the bottom of the top plate. The adsorption mechanism includes a support disc wrapped around the outer surface of the bottom of the support frame, and a fixed frame fixedly connected to the top plate is provided on the upper surface of the support disc. A circular ring socket is sleeved on the outer circular surface of the support disc. A circular ring embedded in the outer circular surface of the support disc is provided on the inner wall of the circular ring socket. The threaded rod passes through the bottom of the limit frame and is fixedly connected to a pulley. A belt is sleeved on the outer circular surfaces of the circular ring socket and the pulley.

[0015] As a further solution of the present invention: a bottom of one side of the inner wall of the circular ring socket is fixedly connected with an L-shaped plate, a recovery tank is fixedly connected to a top of the L-shaped plate, a bottom of the recovery tank is fixedly communicated with an air pump, and an output end of the air pump is fixedly connected with a suction pipe.

[0016] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects: (1) In this solution, by setting the support mechanism and the clamping mechanism, when it is necessary to polish the edge of the workpiece, the electric telescopic rod is started again, and it is contracted back to the initial state to release the locking of the limiting block on the clamping plate, so that the first threaded cylinder is in a movable state; then, the second servo motor is started, and the driving rod drives the gear block to rotate, and then drives the toothed disc to rotate through the sleeve ring teeth. Finally, the second threaded cylinder rotates in the support frame and drives the clamped workpiece to rotate together, so as to accurately polish the edge of the workpiece; and in the whole operation process, by accurately controlling the rotation angle of the driving rod, the polishing angle of the workpiece is changed, and the unpolished side is turned over for subsequent polishing operations, solving the problem that the pressure fluctuation is easy to occur during the manual force application process, resulting in uneven surface stress and affecting the processing consistency, and the problem that the polishing accuracy is inaccurate due to changing the polishing angle of the workpiece by manual experience.

[0017] (2) By setting the polishing assembly and the connecting assembly, in order to meet the requirements of different processing stages, such as when changing from rough grinding to fine polishing, the operator can first replace the sandpaper on the right polishing table with a polishing cloth or other polishing materials; then, loosen the locking sleeve to make the top plate rotatable, and rotate the top plate counterclockwise to drive the clamped workpiece to move as a whole to the polishing area where the polishing cloth has been replaced; then tighten the locking sleeve again, and the top plate and the workpiece can be stably fixed at the polishing position to ensure the stability and consistency during the subsequent polishing process.

[0018] (3) By setting the driving mechanism and the transmission mechanism, to further achieve precise polishing of the edge of the workpiece, start the first servo motor to rotate forward or backward to adjust the rotation direction of the threaded rod, thereby driving a series of connected components to move, so that the support arm and the support frame rotate clockwise or counterclockwise as needed, achieving the effect of precise angle polishing of the edge of the workpiece; and in this process, the swing range of the support arm is limited by the arc-shaped groove on the U-shaped limiting frame, ensuring the safety of the operation and the controllability and consistency of the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0020] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the split connection between the grinding component and the chassis of the present invention; Figure 3 Schematic diagram of the connection between the driving mechanism and the transmission mechanism of the present invention; Figure 4 Cross-sectional connection diagram of the driving mechanism of the present invention; Figure 5 Schematic diagram of the connection of the spraying component of the present invention; Figure 6 Schematic diagram of the connection between the support mechanism and the clamping mechanism of the present invention; Figure 7 Schematic diagram of the connection between the clamping mechanism and the adsorption mechanism of the present invention; Figure 8 Schematic diagram of the structure of the adsorption mechanism of the present invention; Figure 9 Schematic diagram of the split connection between the support disc and the ring socket of the present invention.

[0021] Reference numerals: 1, chassis; 2, grinding component; 21, grinding table; 22, sandpaper; 23, locking cover; 24, splash guard; 3, cooling spray head; 4, hydraulic rod; 5, support rod; 51, locking rod; 52, support plate; 53, locking sleeve; 6, top plate; 61, chute; 7, driving mechanism; 71, limiting frame; 72, limiting groove; 73, first servo motor; 74, threaded rod; 75, threaded sleeve; 76, sliding plate; 77, toothed plate; 8, transmission mechanism; 81, U-shaped bracket; 82, main gear; 83, U-shaped limiting frame; 84, arc groove; 85, support rod; 86, driven gear; 9, support mechanism; 91, support arm; 92, support frame; 93, first threaded cylinder; 94, first baffle; 95, clamping plate; 96, clamping groove; 97, electric telescopic rod; 98, limiting block; 99, second threaded cylinder; 910, toothed disc; 911, second baffle; 10, clamping mechanism; 101, first limiting rod; 102, first clamping plate; 103, second limiting rod; 104, second clamping plate; 105, ring gear; 106, second servo motor; 107, driving rod; 108, gear block; 11, spraying component; 111, fixing rod; 112, sleeve; 113, spraying plate; 114, connecting pipe; 12. Adsorption mechanism; 121. Support disc; 122. Fixed frame; 123. Ring sleeve seat; 124. Ring; 125. L-shaped plate; 126. Recovery tank; 127. Air pump; 128. Straw; 129. Pulley; 1210. Belt.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0023] The following describes in detail a multi-degree-of-freedom workpiece grinding and clamping mechanism provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; and the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0024] As Figures 1 to 9 shown, an embodiment of the present invention provides a multi-degree-of-freedom workpiece grinding and clamping mechanism, including a chassis 1. Cooling nozzles 3 are installed on both sides of the upper surface of the chassis 1. Grinding components 2 are symmetrically arranged on both sides inside the chassis 1. A hydraulic rod 4 is fixedly connected to the upper surface of the chassis 1. A connecting component is arranged at the top of the hydraulic rod 4. The hydraulic rod 4 is detachably connected to a top plate 6 through the connecting component; a support mechanism 9 is arranged on one side of the bottom of the top plate 6. The support mechanism 9 includes a support frame 92 arranged on one side of the bottom of the top plate 6. The two ends of the support frame 92 are respectively rotatably connected to a first threaded cylinder 93 and a second threaded cylinder 99. Limiting components are arranged on the outer circumferential surfaces of the first threaded cylinder 93 and the second threaded cylinder 99 for locking their rotational degrees of freedom; and a clamping mechanism 10 for clamping the workpiece is arranged inside the support frame 92; Among them, the clamping mechanism 10 includes a first limiting rod 101 and a second limiting rod 103 respectively threadedly connected to the inside of the first threaded cylinder 93 and the second threaded cylinder 99. One ends of the first limiting rod 101 and the second limiting rod 103 are respectively fixedly connected to a first clamping plate 102 and a second clamping plate 104. And an adjusting component for adjusting the grinding angle of the workpiece is arranged on one side of the outer surface of the support frame 92; The hydraulic rod 4 is driven to press down the top plate 6, so that the clamped workpiece contacts the grinding component 2, and the position of the clamping mechanism 10 is locked by the limiting component. Then, the second threaded cylinder 99 is driven to rotate by the adjusting component to drive the workpiece to flip to adjust the grinding angle.

[0025] As Figure 5 、 Figure 6As shown, the limiting component includes a first baffle 94 and a clamping plate 95 respectively and fixedly connected to both ends of the outer circumferential surface of the first threaded cylinder 93. Slots 96 are formed at both the top and bottom of the clamping plate 95. An electric telescopic rod 97 fixedly connected to the support frame 92 is arranged at the top of the clamping plate 95, and a limiting block 98 for limiting the clamping plate 95 is fixedly connected to one end of the electric telescopic rod 97. Second baffles 911 and gear disks 910 are respectively and fixedly connected to both ends of the outer circumferential surface of the second threaded cylinder 99.

[0026] As Figure 5 , Figure 6 shown, the adjusting component includes a second servo motor 106 fixedly connected to one side of the outer surface of the support frame 92. A driving rod 107 is fixedly connected to the output end of the second servo motor 106. A gear block 108 is fixedly connected to one end of the driving rod 107. A collar gear 105 is sleeved on the outer surface of the gear disk 910, and the collar gear 105 is meshed with the gear block 108.

[0027] To solve the problems of uneven force application caused by traditional manual grinding, easy breakage of hard and brittle materials, and difficulty in machining complex curved surfaces, the above technical solution is adopted to solve the problem. The above technical solution mainly consists of a support mechanism 9 and a clamping mechanism 10. Before grinding the workpiece, first start the electric telescopic rod 97, extend it and insert the limit block 98 into the card slot 96 to fix the position of the clamping plate 95, ensuring that the first threaded cylinder 93 will not move or rotate horizontally. Then place the workpiece to be processed between the first clamping plate 102 and the second clamping plate 104, and by rotating the first limit rod 101, make the first clamping plate 102 approach and fit the workpiece; subsequently, rotate the second limit rod 103 to make the second clamping plate 104 approach and fit the workpiece from the other side. Through this double-sided clamping method, ensure that the workpiece is firmly clamped; during this process, the first baffle 94 and the clamping plate 95 work together to prevent the first threaded cylinder 93 from unnecessary rotation or movement during the clamping operation, thus ensuring the stability during the clamping process. At the same time, the second baffle 911 and the toothed disc 910 also play a similar role. They ensure that the second threaded cylinder 99 will not move or rotate horizontally during the clamping operation. In particular, the collar teeth 105 sleeved on the outer surface of the toothed disc 910 further fix the position of the toothed disc 910, so that when adjusting the second limit rod 103, the second threaded cylinder 99 remains stable, thus ensuring the reliability of the entire clamping system. After the workpiece is clamped, start the hydraulic rod 4, contract it to drive the top plate 6 to descend, so that the bottom surface of the workpiece contacts the grinding assembly 2. At the same time, start the external water pump to convey cooling water to the grinding assembly 2 through the cooling nozzle 3, effectively reducing the heat generated during the grinding process, reducing equipment damage and improving the surface quality of the workpiece; and when it is necessary to grind the edge of the workpiece, start the electric telescopic rod 97 again, contract it back to the initial state, release the locking of the limit block 98 on the clamping plate 95, and make the first threaded cylinder 93 in an active state; then, start the second servo motor 106, the drive rod 107 drives the gear block 108 to rotate, and then drives the toothed disc 910 to rotate through the collar teeth 105. Finally, make the second threaded cylinder 99 rotate in the support frame 92 and drive the clamped workpiece to rotate together in order to precisely grind the edge of the workpiece.During the whole operation process, by precisely controlling the rotation angle of the driving rod 107, the grinding angle of the workpiece is changed, and the unground side is turned over for subsequent grinding operations, thus solving the problems that pressure fluctuations are likely to occur during the manual force application process, resulting in uneven surface stress and affecting the machining consistency, and that the grinding accuracy is inaccurate due to changing the grinding angle of the workpiece based on manual experience; and by using the combined design of the second servo motor 106 to drive the gear block 108 and the gear disc 910, fine adjustment of any angle of the workpiece is achieved, solving the problem that it is difficult to contact and grind complex curved surface workpieces, improving the machining accuracy, and the whole clamping and grinding process is highly automated, reducing manual intervention, not only improving the work efficiency, but also reducing the error risk caused by human factors.

[0028] As Figure 1 , Figure 2 shown, the grinding assembly 2 includes grinding tables 21 fixedly connected to both sides inside the chassis 1. The upper surface of the grinding table 21 is covered with sandpaper 22. The top of the grinding table 21 is threadedly connected with a locking cover 23 for fixing the sandpaper 22, and a locking ring matching with the locking cover 23 is provided at the outer edge of the top of the grinding table 21. A splash-proof cover 24 fixedly connected to the chassis 1 is arranged on the outer surface of the grinding table 21; the connecting assembly includes a support rod 5 fixedly connected to the top of the hydraulic rod 4. The top of the support rod 5 is fixedly connected with a locking rod 51. The top plate 6 is sleeved on the outer cylindrical surface of the support rod 5, and a support plate 52 fixedly connected to the support rod 5 is arranged at the bottom of the top plate 6. A locking sleeve 53 for limiting the support plate 52 is threadedly connected to the outer cylindrical surface of the locking rod 51.

[0029] To ensure stability during the grinding process, a locking cover 23 is provided on the top of the grinding table 21. The locking cover 23 is installed on the grinding table 21 by means of threaded connection, and a matching locking ring is provided on its outer edge, so as to effectively press and position the sandpaper 22. This design effectively solves the problems of easy sliding, offset and even falling off of the sandpaper in traditional grinding equipment, and significantly improves the stability of the grinding process and the processing quality. In addition, a splash guard 24 is provided on the outer surface of the grinding table 21 to block the flying debris, dust and cooling water droplets during the grinding process, which not only helps to keep the working environment clean, but also improves the operation safety and avoids personal injury or equipment contamination caused by flying debris. When the sandpaper 22 needs to be replaced, the operator only needs to rotate the locking cover 23 in the reverse direction to remove it from the grinding table 21, and then the old sandpaper can be easily taken out and a new sandpaper can be replaced, with simple and fast operation, greatly improving the equipment maintenance efficiency and use convenience. Further, in order to meet the requirements of different processing stages, such as when changing from rough grinding to fine polishing, the operator can first replace the sandpaper 22 on the right grinding table 21 with a polishing cloth or other polishing materials; then, loosen the locking sleeve 53 to make the top plate 6 rotatable, and rotate the top plate 6 counterclockwise to drive the clamped workpiece to move as a whole to the grinding area where the polishing cloth has been replaced; tighten the locking sleeve 53 again to stably fix the top plate 6 and the workpiece in the polishing position to ensure the stability and consistency during the subsequent polishing process. During the above operation process, by controlling the rotation and locking of the top plate 6 through the locking sleeve 53, the same equipment can realize the function switching of "grinding - polishing" without disassembling the fixture, greatly simplifying the processing flow and improving the flexibility and practicality of the equipment; at the same time, the workpiece is always in the same clamping state during the whole grinding and polishing process, avoiding the positioning error caused by multiple disassembly and assembly, and significantly improving the surface quality and processing consistency of the final product.

[0030] As Figure 3 、 Figure 4 、 Figure 5 shown, a transmission mechanism 8 fixedly connected to the top plate 6 is provided directly above the support frame 92, and a driving mechanism 7 for driving the transmission mechanism 8 to change the angle of the support frame 92 is provided on the other side of the bottom of the top plate 6. The transmission mechanism 8 includes a U-shaped limit frame 83 fixedly connected to one side of the bottom of the top plate 6. A driven gear 86 is rotatably connected inside the U-shaped limit frame 83, and a support rod 85 for supporting the driven gear 86 is fixedly connected inside the U-shaped limit frame 83. Arc-shaped grooves 84 are provided on both sides of the outer surface of the U-shaped limit frame 83. A support arm 91 is fixedly connected to the top of the support frame 92, and the support arm 91 passes through the arc-shaped groove 84 and is fixedly connected to the driven gear 86 to ensure synchronous movement.

[0031] As Figure 4 、 Figure 5As shown, the transmission mechanism 8 further includes a U-shaped bracket 81 fixedly connected to the middle of the bottom of the top plate 6. A main gear 82 is rotatably connected inside the U-shaped bracket 81, and the main gear 82 is meshed with the driven gear 86. The main gear 82 and the driven gear 86 are rotated by the driving mechanism 7 to adjust the offset angle of the support frame 92.

[0032] As Figure 3 , Figure 4 shown, the driving mechanism 7 includes a limiting frame 71 fixedly connected to the other side of the top of the top plate 6. A limiting groove 72 is formed on one side of the outer surface of the limiting frame 71. A first servo motor 73 is fixedly connected to the inner top of the limiting frame 71. The output end of the first servo motor 73 is fixedly connected to a threaded rod 74. A threaded sleeve 75 is threadedly connected to the outer cylindrical surface of the threaded rod 74. A slide plate 76 is fixedly connected to one side of the outer cylindrical surface of the threaded sleeve 75. The slide plate 76 penetrates through the limiting groove 72 and is fixedly connected to a toothed plate 77. A chute 61 is formed in the top plate 6 directly above the toothed plate 77. The toothed plate 77 is meshed with the toothed plate 77.

[0033] To achieve precise grinding of the workpiece edge, first, use the second servo motor 106 to drive the clamped workpiece to flip, so that the edge part to be ground faces the grinding component 2 for smooth subsequent processing. Then start the electric telescopic rod 97, make it extend and drive the limit block 98 to snap into the slot 96 on the clamping plate 95, so as to perform secondary limit fixation on the first threaded barrel 93 and ensure that it will not accidentally rotate or shift during the grinding process. At the same time, the second threaded barrel 99 remains in place to maintain the stability of the overall structure. Next, start the hydraulic rod 4, make it contract and drive the top plate 6 to descend, so that the flipped workpiece contacts the surface of the sandpaper 22 and starts the preliminary grinding operation. At this time, to further adjust the grinding angle and achieve refined processing of the workpiece edge, start the first servo motor 73 to rotate forward, drive the threaded rod 74 connected to its output end to rotate. As the threaded rod 74 rotates, the threaded sleeve 75 threadedly connected to it will move downward along the limit groove 72 direction and drive the slide plate 76 to move together. The downward movement of the slide plate 76 pushes the tooth plate 77 downward synchronously. Since the tooth plate 77 meshes with the main gear 82, the main gear 82 starts to rotate clockwise under the action of the tooth plate 77, and the rotation of the main gear 82 further drives the driven gear 86 meshing with it to rotate clockwise. The driven gear 86 is rigidly connected to the support arm 91 and the support frame 92 through the support arm 91, so that the support arm 91 and the entire support frame 92 rotate synchronously clockwise. During this process, the arc-shaped groove 84 opened on the U-shaped limit frame 83 plays a key limiting role. Since the support arm 91 penetrates through the arc-shaped groove 84, it is restricted by the groove body during the rotation process and can only swing within a set angle range, avoiding the situation of excessive wear of the workpiece or deviation from the grinding area due to too large a deflection angle. This design not only improves the safety of the equipment operation but also ensures the controllability and consistency of the grinding process. When grinding the other edge of the workpiece, only need to reverse the start of the first servo motor 73, make it reverse, drive the threaded rod 74 to rotate in the reverse direction, and then make the threaded sleeve 75, the slide plate 76 and the tooth plate 77 move upward. The upward movement of the tooth plate 77 causes the main gear 82 to rotate counterclockwise, and also drives the support arm 91 and the support frame 92 to rotate counterclockwise through the driven gear 86 to complete the positioning and grinding of the other edge of the workpiece. Through the above linkage mechanism, precise control of the grinding angle of the workpiece edge is achieved, solving the problems of uneven force application, difficult angle adjustment, and low efficiency in traditional manual grinding, and significantly improving the grinding quality and the automation level of the equipment.

[0034] Such as Figure 4 , Figure 5 , Figure 6As shown in the figure, a spraying assembly 11 for flushing impurities on the surface of the workpiece is provided at the inner top of the support frame 92. The spraying assembly 11 includes a fixed rod 111 fixedly connected to the inner top of the support frame 92. A sleeve 112 is rotatably connected to the outer circumferential surface of the fixed rod 111. A spraying plate 113 is fixedly connected to the bottom of the sleeve 112. One side of the top of the spraying plate 113 is fixedly communicated with a connecting pipe 114. One end of the connecting pipe 114 penetrates through the top plate 6 and is connected to the water outlet end of the cooling nozzle 3 to provide water flow for the spraying plate 113.

[0035] During the process of grinding the workpiece, due to the high-speed friction between the sandpaper 22 and the surface of the workpiece, the local temperature of the workpiece will rise rapidly, which may not only affect the physical properties of the workpiece material, but also have an adverse impact on the stability and service life of the grinding equipment. In addition, the metal chips or dust generated during the grinding process are also likely to adhere to the surface of the workpiece, thereby affecting the uniformity and processing quality of subsequent grinding. Therefore, when the grinding starts, the external water pump is started, and the coolant flows out from the cooling nozzle 3 and is transported to the inside of the spraying plate 113 through the connecting pipe 114, and then is evenly sprayed onto the surface of the workpiece from the multiple nozzles provided at the bottom of the spraying plate 113. On the one hand, the coolant effectively reduces the high temperature generated by friction and prevents the workpiece from overheating and deforming or the equipment components from being damaged due to temperature rise. On the other hand, the spraying process of the coolant can also wash away the chips and dust attached to the surface of the workpiece, avoiding these impurities from interfering with the grinding accuracy, thereby ensuring the stability and consistency of the grinding quality. In addition, since the spraying plate 113 is rotatably connected to the fixed rod 111 through the sleeve 112, when the workpiece is flipped or the angle is adjusted, the spraying plate 113 can automatically adjust the direction accordingly and always maintain the best relative position with the surface of the workpiece to ensure that the cooling and cleaning effects are not affected.

[0036] As Figure 3 、 Figure 7 、 Figure 8 、 Figure 9 As shown in the figure, an adsorption mechanism 12 for adsorbing chips on the surface of the workpiece is further provided on one side of the bottom of the top plate 6. The adsorption mechanism 12 includes a support disk 121 wrapped around the outer surface of the bottom of the support frame 92. A fixed frame 122 fixedly connected to the top plate 6 is provided on the upper surface of the support disk 121. A circular ring socket 123 is sleeved on the outer circumferential surface of the support disk 121. A circular ring 124 embedded in the outer circumferential surface of the support disk 121 is provided on the inner wall of the circular ring socket 123. The threaded rod 74 penetrates through the bottom of the limit frame 71 and is fixedly connected to a pulley 129. A belt 1210 is sleeved on the outer circumferential surfaces of the circular ring socket 123 and the pulley 129.

[0037] As Figure 8 、 Figure 9As shown, at the bottom of one side of the inner wall of the circular ring socket 123, an L-shaped plate 125 is fixedly connected, and at the top of the L-shaped plate 125, a recovery tank 126 is fixedly connected. The bottom of the recovery tank 126 is fixedly communicated with an air pump 127, and the output end of the air pump 127 is fixedly connected with a suction pipe 128.

[0038] When the driving mechanism 7 and the transmission mechanism 8 are used to grind the clamped workpiece, the first servo motor 73 is started, and its driving force causes the threaded rod 74 to rotate. Since the threaded rod 74 is fixedly connected to the pulley 129, the pulley 129 rotates accordingly, and drives the circular ring socket 123 to rotate synchronously on the outer surface of the support disk 121 through the belt 1210. During this process, the circular ring 124 is embedded in the groove on the outer surface of the support disk 121, ensuring the stability of the rotation of the circular ring socket 123 and preventing it from detaching from the support disk 121. At the same time, the circular ring socket 123 drives the recovery tank 126, the air pump 127, and the suction pipe 128 to perform a circular motion around the clamped workpiece through the L-shaped plate 125. And to avoid the debris generated during the grinding process from affecting the grinding effect, while the circular ring socket 123 is rotating, the air pump 127 is started to enable the suction pipe 128 to adsorb and recover the debris on the surface of the workpiece in real time and collect it in the recovery tank 126. This operation process not only adsorbs debris and dust in real time to avoid interfering with the grinding process and ensuring the uniformity and smoothness of the workpiece surface, but also automatically collects the debris, reducing the cleaning burden of the operator and improving work efficiency. At the same time, it effectively prevents debris from splashing, reduces the wear of the equipment and the pollution of the working environment, and reduces the dust particles suspended in the air, improving the working environment and ensuring the health and safety of the operator.

[0039] When the present invention is in use, first, start the electric telescopic rod 97 to make it extend and snap the limit block 98 into the card slot 96, thereby fixing the position of the clamping plate 95 to ensure that the first threaded cylinder 93 will not move or rotate horizontally. Then, place the workpiece to be processed between the first clamping plate 102 and the second clamping plate 104, and make the first clamping plate 102 approach and fit the workpiece by rotating the first limiting rod 101. Subsequently, rotate the second limiting rod 103 to make the second clamping plate 104 approach and fit the workpiece from the other side, realizing double-sided clamping to ensure that the workpiece is firmly clamped. During this process, the first baffle 94 and the clamping plate 95 work together to prevent the first threaded cylinder 93 from rotating or moving unnecessarily during the clamping operation, ensuring the stability during the clamping process. At the same time, the second baffle 911 and the gear disk 910 also play a similar role, ensuring that the second threaded cylinder 99 will not move horizontally or rotate during the clamping operation. In particular, the collar teeth 105 sleeved on the outer surface of the gear disk 910 further fix the position of the gear disk 910, so that when adjusting the second limiting rod 103, the second threaded cylinder 99 remains stable, thus ensuring the reliability of the entire clamping system. After the workpiece is clamped, start the hydraulic rod 4 to make it contract and drive the top plate 6 to descend, so that the bottom surface of the workpiece contacts the grinding assembly 2. At the same time, start the external water pump to convey cooling water to the grinding assembly 2 through the cooling nozzle 3, effectively reducing the heat generated during the grinding process, reducing equipment damage and improving the surface quality of the workpiece. When it is necessary to grind the edge of the workpiece, start the electric telescopic rod 97 again to contract it back to the initial state, release the locking of the limit block 98 on the clamping plate 95, and make the second threaded cylinder 99 in an active state. Then, start the second servo motor 106, and the driving rod 107 drives the gear block 108 to rotate, and then drives the gear disk 910 to rotate through the collar teeth 105. Finally, make the second threaded cylinder 99 rotate in the support frame 92 and drive the clamped workpiece to rotate together in order to precisely grind the edge of the workpiece. At the beginning of grinding, the external water pump is started, and the coolant flows out from the cooling nozzle 3 and is conveyed to the inside of the spray plate 113 through the connecting pipe 114, and then evenly sprayed onto the surface of the workpiece from multiple nozzles arranged at the bottom of the spray plate 113. On the one hand, the coolant effectively reduces the high temperature generated by friction, preventing the workpiece from overheating and deforming or the equipment components from being damaged due to temperature rise; on the other hand, the spraying process of the coolant can also wash away the debris and dust attached to the surface of the workpiece, avoiding these impurities from interfering with the grinding accuracy, thus ensuring the stability and consistency of the grinding quality. In addition, when using the driving mechanism 7 and the transmission mechanism 8 to grind the clamped workpiece, the first servo motor 73 is started, and its driving force makes the threaded rod 74 rotate. Since the threaded rod 74 is fixedly connected to the pulley 129, the pulley 129 rotates accordingly and drives the circular ring socket 123 to rotate synchronously on the outer surface of the support disk 121 through the belt 1210.During this process, the ring 124 is embedded in the groove on the outer surface of the support disk 121, ensuring the stability of the rotation of the ring socket 123. At the same time, the ring socket 123 drives the recovery tank 126, the air pump 127 and the suction pipe 128 to perform circular motion around the clamped workpiece through the L-shaped plate 125. The air pump 127 is started to enable the suction pipe 128 to adsorb and recover the debris on the surface of the workpiece in real time and collect it in the recovery tank 126 centrally. This not only reduces the cleaning burden of the operator, but also improves the work efficiency, improves the working environment and ensures the health and safety of the operator.

[0040] The present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, well-known methods, processes, procedures, components and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0041] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A multi-degree-of-freedom workpiece grinding and clamping mechanism, including a chassis, and cooling nozzles are installed on both sides of the upper surface of the chassis; it is characterized in that, Grinding components are symmetrically arranged on both sides of the chassis, a hydraulic rod is fixedly connected to the upper surface of the chassis, a connecting component is arranged on the top of the hydraulic rod, and the hydraulic rod is detachably connected to the top plate through the connecting component; a supporting mechanism is arranged on one side of the bottom of the top plate, and the supporting mechanism includes a supporting frame arranged on one side of the bottom of the top plate, and the two ends of the supporting frame are rotatably connected to the first threaded cylinder and the second threaded cylinder, respectively, and the outer circumferential surfaces of the first threaded cylinder and the second threaded cylinder are both provided with limit assemblies for locking their rotational freedom; and a clamping mechanism for clamping the workpiece is arranged inside the supporting frame; The clamping mechanism includes a first limiting rod and a second limiting rod which are respectively threadedly connected to the inside of the first threaded cylinder and the second threaded cylinder, and one end of the first limiting rod and the second limiting rod are respectively fixedly connected to the first clamping plate and the second clamping plate, and an adjustment component for adjusting the grinding angle of the workpiece is provided on one side of the outer surface of the support frame; The hydraulic rod drives the top plate to press down, so that the clamped workpiece contacts the grinding assembly, and the limit assembly locks the position of the clamping mechanism. The adjustment assembly then drives the second threaded cylinder to rotate, causing the workpiece to flip to adjust the grinding angle.

2. The multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 1, wherein, The limiting assembly includes a first baffle and a clamping plate respectively fixedly connected to the two ends of the outer cylindrical surface of the first threaded cylinder, and clamping grooves are provided at the top and bottom of the clamping plate. An electric telescopic rod fixedly connected to the support frame is provided on the top of the clamping plate, and a limiting block for limiting the clamping plate is fixedly connected to one end of the electric telescopic rod. The second baffle and the clamping gear plate are respectively fixedly connected to the two ends of the outer cylindrical surface of the second threaded cylinder.

3. The multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 2, characterized in that, The adjustment component includes a second servo motor fixedly connected to one side of the outer surface of the support frame, the output end of the second servo motor is fixedly connected to a driving rod, one end of the driving rod is fixedly connected to a gear block, the outer surface of the gear plate is sleeved with ring teeth, and the ring teeth are meshed with the gear block.

4. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 3, characterized in that, The grinding assembly includes a grinding table fixedly connected to both sides of the chassis, the upper surface of the grinding table is covered with sandpaper, the top of the grinding table is threadedly connected with a locking cover for fixing the sandpaper, and the top outer edge of the grinding table is provided with a locking ring matching the locking cover, and the outer surface of the grinding table is provided with a splash guard fixedly connected to the chassis; the connecting assembly includes a support rod fixedly connected to the top of the hydraulic rod, the top of the support rod is fixedly connected with a locking rod, the top plate is sleeved on the outer cylindrical surface of the support rod, and a support plate fixedly connected to the support rod is provided at the bottom of the top plate, and the outer cylindrical surface of the locking rod is threadedly connected with a locking sleeve for limiting the support plate.

5. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 4, characterized in that, A transmission mechanism fixedly connected to the top plate is arranged directly above the support frame, and a driving mechanism for driving the transmission mechanism to change the angle of the support frame is arranged on the other side of the bottom of the top plate, the transmission mechanism includes a U-shaped limit frame fixedly connected to one side of the bottom of the top plate, the internal rotation of the U-shaped limit frame is connected to a driven gear, and the internal of the U-shaped limit frame is fixedly connected to a support rod for supporting the driven gear, arc grooves are provided on both sides of the outer surface of the U-shaped limit frame, a support arm is fixedly connected to the top of the support frame, and the support arm passes through the arc groove and is fixedly connected to the driven gear to ensure synchronous movement.

6. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 5, characterized in that, The transmission mechanism further includes a U-shaped bracket fixedly connected to the middle of the bottom of the top plate. A main gear is rotatably connected inside the U-shaped bracket, and the main gear is meshed with the driven gear. The main gear and the driven gear are rotated by the driving mechanism to adjust the offset angle of the support frame.

7. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 6, characterized in that, The driving mechanism includes a limit frame fixedly connected to the other side of the top of the top plate. A limit groove is formed on one side of the outer surface of the limit frame. A first servo motor is fixedly connected to the inner top of the limit frame. The output end of the first servo motor is fixedly connected to a threaded rod. A threaded sleeve is threadedly connected to the outer cylindrical surface of the threaded rod. A sliding plate is fixedly connected to one side of the outer cylindrical surface of the threaded sleeve. The sliding plate penetrates through the limit groove and is fixedly connected to a toothed plate. A chute is formed on the top plate directly above the toothed plate. The toothed plate is meshed with the toothed plate.

8. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 7, characterized in that, A spraying assembly for flushing impurities on the surface of the workpiece is arranged on the inner top of the support frame. The spraying assembly includes a fixed rod fixedly connected to the inner top of the support frame. A sleeve is rotatably connected to the outer cylindrical surface of the fixed rod. A spraying plate is fixedly connected to the bottom of the sleeve. A connecting pipe is fixedly communicated with one side of the top of the spraying plate. One end of the connecting pipe penetrates through the inside of the top plate and is connected to the water outlet end of the cooling spray head to provide water flow for the spraying plate.

9. The multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 8, wherein, An adsorption mechanism for adsorbing debris on the surface of the workpiece is further arranged on one side of the bottom of the top plate. The adsorption mechanism includes a support disc wrapped around the outer surface of the bottom of the support frame. A fixed frame fixedly connected to the top plate is arranged on the upper surface of the support disc. A circular ring socket is sleeved on the outer circular surface of the support disc. A circular ring embedded in the outer circular surface of the support disc is arranged on the inner wall of the circular ring socket. The threaded rod penetrates through the bottom of the limit frame and is fixedly connected to a pulley. A belt is sleeved on the outer circular surfaces of the circular ring socket and the pulley together.

10. A multi-degree-of-freedom workpiece grinding and clamping mechanism according to claim 9, characterized in that, An L-shaped plate is fixedly connected to the bottom of one side of the inner wall of the circular ring socket. A recovery tank is fixedly connected to the top of the L-shaped plate. An air pump is fixedly communicated with the bottom of the recovery tank. The output end of the air pump is fixedly connected to a suction pipe.

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