A method for connecting and processing a batch of high light frames

Abstract

The application relates to the technical field of television processing, and particularly discloses a connecting and processing method for high-light frames with batch teeth, which is characterized in that: first, a pre-processed frame section is clamped on a multi-degree-of-freedom posture adjusting clamp, and through laser positioning and two-stage coordinated movement of the clamp, a micro V-shaped joint is formed by aligning the splicing bevels; then, under the same clamping state, the splicing joint is sequentially subjected to fine milling, profiling polishing, texture repairing and deburring treatment, and finally, the frame splicing is completed. The clamp comprises a base platform capable of driving the plane displacement of a loading plate and a plurality of posture adjusting units capable of independently driving the two-dimensional fine adjustment of the frame section, and vacuum adsorption and mechanical linkage composite clamping are adopted. Through the integrated processing mode, the application fundamentally avoids the clamping error for multiple times, ensures that the splicing part is completely unified with the frame body in terms of geometric shape, glossiness and texture, realizes the invisible connection, and significantly improves the processing precision, appearance quality and production efficiency of the large frame.

Description

Technical Field

[0001] This invention relates to the field of television manufacturing and processing technology, specifically to a method for connecting and processing a toothed high-gloss frame. Background Technology

[0002] The outer frame of a television not only serves the function of structural fixation, but is also a key decorative component that determines the product's appearance and texture. To achieve a high-end visual effect, a frame design that combines a high-gloss surface with a complex serrated texture is often used. When processing large-sized television frames, the frame needs to be fixed on a fixture, which is then mounted on a machine tool, and the machine tool processes and assembles the television frame.

[0003] Currently, Chinese patent application number CN201711401019.7 discloses a special fixture for processing television bezels, including a support base. A rotating connecting column is connected to the center of the upper surface of the support base via a bearing, and a tilting motor is bolted to the center of the lower surface of the support base. The output shaft of the tilting motor passes through one side of the support base. A connecting foot plate can fix the fixture to a machine tool. The tilting motor can drive the connecting frame to rotate, which in turn drives the television bezel to rotate. An electric telescopic rod can move the fixed side plate up and down, and a first cylinder telescopic rod can move the fixed side plate back and forth. The fixed side plate fixes the television bezel in the fixing groove of the connecting frame. This special fixture for processing television bezels has a simple structure and is easy to operate. It not only makes clamping the television bezel more convenient but also allows for conversion of the television bezel, resulting in faster processing speeds and providing convenience for users.

[0004] However, existing technologies typically process a single complete frame from multiple sides during the frame manufacturing process, making it inconvenient to perform high-precision docking between multiple frame segments. Furthermore, due to the dispersed processes, it is not easy to complete all-round fine processing of the splicing area in a single clamping, resulting in obvious splicing marks that affect the overall texture and product grade of large frames. Summary of the Invention

[0005] The purpose of this invention is to provide a method for connecting and processing high-gloss frames for toothed teeth, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a method for connecting and processing a toothed high-gloss frame, used to connect multiple strip-shaped frame segments pre-processed with toothed and high-gloss surfaces into a complete rectangular frame on a CNC machine tool, the method comprising the following steps:

[0007] S1. Border segment preprocessing: Provide at least four strip border segments that have been processed with toothed and glossy surfaces. Mill the ends of each border segment to be connected to form a splicing bevel with a predetermined angle.

[0008] S2. Clamping and Positioning: The frame segments are clamped one by one onto a multi-degree-of-freedom attitude adjustment fixture. The multi-degree-of-freedom attitude adjustment fixture includes a base platform and four attitude adjustment units disposed thereon. Each attitude adjustment unit is used to independently clamp and adjust the spatial attitude of one of the frame segments. With the assistance of a laser positioner, the attitude adjustment units are driven to move so that the splicing slopes of adjacent frame segments are precisely aligned and a V-shaped splicing seam with a width of less than 0.1mm is formed at the joint.

[0009] S3. Splicing seam processing: Keep the multi-degree-of-freedom attitude adjustment fixture locked, use a milling cutter mounted on a CNC machine tool to finely mill the splicing seam to ensure that the angle at the splicing point is continuous and the transition is smooth. Then, use a contour polishing wheel mounted on a CNC machine tool to polish the splicing area so that its gloss is consistent with the adjacent high-gloss surface.

[0010] S4. Texture repair at the splicing point: Replace the milling cutter on the CNC machine tool with a toothed tool, and process a continuous engraving texture at the splicing point according to the original toothed surface texture parameters on the frame segment, so as to ensure that the direction, depth and spacing of the texture are naturally connected with the original texture.

[0011] S5. Overall deburring and post-processing: Use soft polishing tools to deburr the splicing area of ​​the entire rectangular frame, and finally clean and apply a surface coating.

[0012] Preferably, the angle of the splicing slope in step S1 is 45°, so that the four frame segments are finally spliced ​​together to form a rectangular frame.

[0013] Preferably, in step S3, the shape of the contour polishing wheel is a conical wheel that matches the angle of the V-shaped splice, and the material of the contour polishing wheel is nylon-based microfiber containing micro-diamond abrasive.

[0014] Preferably, in step S3, after polishing the seam, an online inspection step is also included: using a vision inspection system installed on the machine tool to scan the smoothness of the seam and feeding the inspection data back to the CNC system; if the smoothness does not meet the requirements, the polishing process is automatically repeated.

[0015] Preferably, the base platform and the four attitude adjustment units described in step S2 are connected by a carrier plate, and the four attitude adjustment units are respectively located above the carrier plate in pairs facing each other, so as to clamp and adjust the four sides of the rectangular frame.

[0016] Preferably, the base platform includes a planar displacement mechanism, which is configured to drive the carrier plate to perform translational movements in at least two directions, front-back and left-right, in the horizontal plane, so as to achieve overall alignment fine-tuning of the frame segments held by the four posture adjustment units.

[0017] The planar displacement mechanism is specifically configured as follows: it includes a base plate, on the top left and right sides of the base plate respectively locked and fixed a first slide and a second slide, on the top middle side of the base plate respectively locked and fixed a support, on the front middle side of the support a first motor, the rear output shaft of the first motor is connected to a first gear rod, and the first gear rod is rotatably connected inside the support, the upper left side of the support a second motor, the right output shaft of the second motor is connected to a second gear rod, and the second gear rod is rotatably connected inside the support, the second gear rod is located above the first gear rod and is vertically distributed, and the top sides of both the first gear rod and the second gear rod mesh with a bidirectional gear plate to drive the bidirectional gear plate to perform displacement movements in the left and right and forward and backward directions respectively, two cylinders are integrally formed on the top middle side of the bidirectional gear plate, and a guide rod frame slides through the two cylinders, the left and right sides of the guide rod frame respectively wrap around the top sides of the first slide and the second slide, and a support frame is fixedly connected to the top of the bidirectional gear plate, and the top side of the support frame is connected to the carrier plate.

[0018] Preferably, each of the posture adjustment units includes a two-dimensional translation mechanism, which is configured to drive the clamping components thereon to perform independent translational movements in two mutually perpendicular directions in the horizontal plane, so as to achieve precise positioning of a single frame segment.

[0019] The clamping assembly is a pressing assembly. The specific structure of this two-dimensional translation mechanism is as follows: it includes a support frame that is fastened to the carrier plate on both the left and right sides of the bottom. A third motor and a fourth motor are fastened to the left and right sides of the support frame respectively. The top output shaft of the third motor is connected to a first drive wheel, and the top output shaft of the fourth motor is connected to a second drive wheel. The first drive wheel and the second drive wheel are rotatably connected to the left and right sides of the top of the support frame respectively. A shifting assembly is laterally slidable on the middle side of the top of the support frame. The rear side of the shifting assembly is driven by a synchronous belt, and the two ends of the front side of the synchronous belt are fastened to the shifting assembly. The synchronous belt is driven by the outer side of the first drive wheel and the second drive wheel, so that the shifting assembly is driven to slide laterally on the top side of the support frame and shift back and forth by the rotation of the first drive wheel and the second drive wheel. A positioning plate is fixed on the middle side of the top of the shifting assembly, and a pressing assembly is locked on the top side of the positioning plate.

[0020] The displacement assembly includes a sliding plate that is laterally slidably connected to the support frame on the bottom center side. The top four sides of the sliding plate are rotatably connected to first guide wheels. The inner sides of the four first guide wheels are all connected to the synchronous belt drive. A support rod is slidably mounted on the top center side of the sliding plate in a front-back direction. A recess is provided on the rear side of the top of the support rod, and a second guide wheel is rotatably connected to the top of the recess. The rear side of the second guide wheel is connected to the synchronous belt drive. The top center side of the support rod is fixed to the positioning plate.

[0021] The first drive wheel, the second drive wheel, the four first guide wheels, and the second guide wheels are all located on the same horizontal plane, and the two ends of the timing belt are connected to the front side of the support rod;

[0022] The pressing assembly includes a base that is fastened to a positioning plate at its bottom. A vacuum suction cup is embedded in the upper right side of the base. A cylinder is locked and fixed to the top left side of the base. A column is fixedly connected to the top right side of the cylinder. A push block is connected to the output rod on the top center side of the cylinder. A first push rod is rotatably connected to the left side of the push block. The top of the first push rod is rotatably connected to a pressing block for pressing the frame segment above. A support plate is rotatably connected to the side of the pressing block near the first push rod. A second push rod is rotatably connected to the middle of the support plate. The bottom of the second push rod is rotatably connected to the push block. The right side of the support plate is rotatably connected to the column. The inlet and outlet ports of the vacuum suction cup and the cylinder are both connected to an external gas generating device.

[0023] In addition, the present invention also provides a multi-degree-of-freedom attitude adjustment fixture for realizing the above-mentioned connection processing method, including a base platform, a carrier plate and four attitude adjustment units; the base platform is provided with a planar displacement mechanism for driving the carrier plate to translate in the horizontal plane; the four attitude adjustment units are arranged opposite to each other on the carrier plate; each attitude adjustment unit includes a two-dimensional translation mechanism for driving the clamping component to perform two-dimensional translation in the horizontal plane, and the clamping component itself.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This invention integrates all key processes, such as precise alignment of frame segments, milling of splice seams, high-gloss polishing, and texture restoration, into a single process using a dedicated multi-degree-of-freedom orientation adjustment fixture. This fundamentally avoids the cumulative errors caused by multiple clamping and equipment changes. The method ensures that the geometry, surface gloss, and subtle textures at the splice joints are seamlessly connected and visually unified with the frame body, significantly improving the overall quality and yield rate of large frame products.

[0026] The multi-degree-of-freedom attitude adjustment fixture of this invention adopts a two-stage coordinated motion mode of overall coarse positioning + individual fine adjustment. Through the motor-driven planar displacement mechanism and the two-dimensional translation mechanism in each attitude adjustment unit, the position and posture of the whole frame and each frame segment can be adjusted independently and precisely. In addition, the composite clamping method combining vacuum adsorption and linkage mechanical clamping provides extremely high stability for high-strength processing. It not only achieves millimeter-level docking accuracy, but also greatly reduces the difficulty of operation and the dependence on skilled workers, ensuring the high efficiency and reliability of the processing.

[0027] This invention utilizes an "integrated" processing method and specialized fixtures to achieve an "invisible" connection at the joints of the produced high-gloss frame with toothed edges. Visually, there are no breaks; to the touch, it is smooth and seamless, possessing extremely high integrity and aesthetic value. At the same time, the integrated processing flow and stable clamping effectively ensure the structural precision and strength of the frame. This meets the increasingly stringent requirements of high-end display devices for the appearance, structural reliability, and production consistency of decorative parts, enhancing the product's market competitiveness. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the multi-degree-of-freedom attitude adjustment fixture of the present invention with two attitude adjustment units installed;

[0029] Figure 2 This is a schematic diagram of the base platform of the present invention;

[0030] Figure 3 This is a three-dimensional structural diagram of the connection between the first carriage and the guide rod frame of the present invention;

[0031] Figure 4 This is a bottom view of the connection between the first gear rod, the second gear rod, and the bidirectional gear plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the posture adjustment unit of the present invention;

[0033] Figure 6 This is a top view of the connection between the shifting component and the positioning plate of the present invention;

[0034] Figure 7 This is a partial three-dimensional structural diagram of the connection between the skateboard and the support rod of the present invention;

[0035] Figure 8 This is a schematic diagram of the pressure component of the present invention.

[0036] In the diagram: Base platform-1, Attitude adjustment unit-2, Carrier plate-3, Base plate-11, First slide-12, Second slide-13, Support-14, First motor-15, First gear rod-16, Second motor-17, Second gear rod-18, Double-sided gear plate-19, Guide rod frame-110, Support frame-111, Support plate frame-21, Third motor-22, Fourth motor-23, First drive wheel-24, ... 25. Second drive wheel - 26. Synchronous belt - 27. Shifting assembly - 28. Positioning plate - 29. Pressing assembly - 271. Slide plate - 272. First guide wheel - 273. Support rod - 274. Second guide wheel - 274. Pad - 291. Vacuum suction cup - 292. Cylinder - 293. Column - 294. Push block - 295. First push rod - 296. Pressing block - 297. Support plate - 298. Second push rod - 299. Detailed Implementation

[0037] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0038] Please see Figures 1-8 This invention provides a method for connecting and processing a toothed, high-gloss frame, which is used to connect multiple strip-shaped frame segments pre-processed with toothed and high-gloss surfaces into a complete rectangular frame on a CNC machine tool. The core of this method is to use a set of dedicated multi-degree-of-freedom posture adjustment fixtures to achieve precise positioning and posture adjustment of each frame segment, and to complete all finishing processes such as milling, polishing, and texture repair of the splicing seam in the same clamping state, ensuring that the visual effect and tactile feel of the splicing point are completely consistent with the frame body, thus solving the industry problem of high overall processing difficulty of large-size frames and difficulty in guaranteeing the quality of splicing points.

[0039] The connection processing method specifically includes the following steps:

[0040] S1. Border segment preprocessing:

[0041] Four strip-shaped frame segments with pre-machined toothed and high-gloss surfaces are provided. Each frame segment's end to be joined is precisely milled using a CNC milling machine to form a splicing bevel with a predetermined angle. In a preferred embodiment, the angle of the splicing bevel is 45°, so that the four frame segments can be seamlessly joined into a rectangular frame, laying the geometric foundation for subsequent high-precision docking.

[0042] S2. Clamping and positioning:

[0043] The pre-processed frame segments are clamped one by one onto a multi-DOF (degree-of-freedom) attitude adjustment fixture, which includes a base platform 1, a carrier plate 3, and four attitude adjustment units 2 mounted on the carrier plate 3. The four attitude adjustment units 2 are arranged in pairs opposite each other on the carrier plate 3, their layout corresponding to the four sides of the rectangular frame to be spliced. During clamping, the frame segments are placed on the clamping components of each attitude adjustment unit 2 and fixed. Subsequently, a laser positioner scans and positions the splicing bevels of adjacent frame segments. Based on the data fed back by the laser positioner, the CNC system drives the movement of each attitude adjustment unit 2 to finely adjust the spatial attitude of each frame segment, so that the splicing bevels of adjacent frame segments are precisely aligned, and an extremely fine V-shaped splicing seam with a width of less than 0.1 mm is formed at the joint, ensuring the initial positional accuracy before splicing.

[0044] S3. Seam processing:

[0045] Maintain the multi-degree-of-freedom orientation adjustment fixture in a locked state to ensure the absolute stability of the frame segment during processing.

[0046] First, the V-shaped splice seam is precision milled using a precision milling cutter mounted on the spindle of a CNC machine tool to remove the slight misalignment allowance, ensuring that the angle at the splice is continuous, the transition is smooth, and the geometry of the frame body is seamlessly connected.

[0047] Then, the processing tool is changed to a contour polishing wheel. Preferably, the contour polishing wheel is a tapered wheel whose shape matches the angle of the V-shaped splice, and its material is nylon-based microfiber containing micro-diamond abrasive. The contour polishing wheel is controlled by a CNC program to polish the splicing area, so that its surface gloss reaches a mirror effect consistent with the adjacent high-gloss surface (above 80 GU).

[0048] As a preferred automation solution, an online inspection step can be added after this step: a vision inspection system installed on the machine tool scans the surface finish after polishing and feeds the data back to the CNC system. If the surface finish does not meet the preset requirements, the system can automatically repeat the polishing process to ensure consistent quality.

[0049] S4. Texture repair at the seam:

[0050] Replace the tools on the CNC machine tool with miniature toothed cutters. Based on the original toothed surface texture parameters (such as scratch depth, spacing, and pattern) on the border segment, carefully process a continuous scratch texture at the splicing point. Through precise CNC programming and tool path control, ensure that the newly processed texture is naturally connected to the original texture in terms of direction, depth, and spacing, with no visual breaks or abrupt changes.

[0051] S5. Overall deburring and post-processing:

[0052] The joint areas of the entire rectangular frame are gently deburred using soft polishing tools to remove tiny burrs generated during processing, resulting in a smooth feel. Finally, the complete frame is cleaned, dried, and coated with a surface coating (such as spraying a clear, wear-resistant varnish) to enhance its wear resistance and overall aesthetics.

[0053] The preferred structure of the multi-degree-of-freedom attitude adjustment fixture is as follows:

[0054] Please see Figures 1-4 The base platform 1 includes a planar shifting mechanism, which is configured to drive the carrier plate 3 to perform translational movements in at least two directions, forward and backward and left and right, in the horizontal plane, so as to realize the overall alignment and fine adjustment of the frame segments held by the four posture adjustment units 2, thereby quickly completing the coarse positioning of the frame segments. This allows the four frame segments to move synchronously to their positions in the plane, making it easier to move them closer to the CNC machine tool operation area for processing.

[0055] The planar displacement mechanism is specifically configured as follows: a base plate 11 is fixedly locked to the left and right sides of the top of the base plate 11, respectively, providing a stable installation foundation and precise guide rails for the entire mechanism; a support 14 is fixedly locked to the middle of the top of the base plate 11, and a first motor 15 is fixedly locked to the middle of the front part of the support 14, serving as the main drive source for left and right translation; the output shaft of the rear of the first motor 15 is connected to a first gear rod 16, and the first gear rod 16 is rotatably connected inside the support 14 to convert the rotational motion of the first motor 15 into the rotation of the first gear rod 16; a second motor 17 is fixedly locked to the upper left side of the support 14, and a second gear rod 18 is connected to the right output shaft of the second motor 17, and the second gear rod 18 is rotatably connected inside the support 14, serving as the active drive source for forward and backward translation to drive the second gear rod 18 to rotate;

[0056] The second gear rod 18 is located above the first gear rod 16 and is vertically distributed. The top sides of both the first gear rod 16 and the second gear rod 18 mesh with the bidirectional gear plate 19 to drive the bidirectional gear plate 19 to perform left-right and forward-backward displacement movements, respectively. Through two independent and vertical gear plate transmission systems, precise and independent control in two vertical directions in the horizontal plane is achieved. Two cylinders are integrally formed on the top middle side of the bidirectional gear plate 19, and guide rod frames 110 slide through the two cylinders. The sliding cooperation between the cylinders and the guide rod frames 110 provides stable guidance, ensures motion accuracy, and prevents jamming. The left and right sides of the guide rod frames 110 respectively wrap around the top sides of the first slide 12 and the second slide 13. The top of the bidirectional gear plate 19 is fixedly connected to the support frame 111, and the top side of the support frame 111 is connected to the carrier plate 3. The support frame 111 acts as a connector to accurately transmit the motion of the planar displacement mechanism to all the attitude adjustment units 2 above the carrier plate 3.

[0057] Please see Figure 1 , Figures 5-8 Each orientation adjustment unit 2 includes a two-dimensional translation mechanism, which is configured to drive the clamping components thereon to perform independent translational movements in two mutually perpendicular directions in the horizontal plane, so as to achieve precise positioning of a single frame segment, thereby enabling independent fine-tuning of each frame segment and achieving extremely high docking accuracy.

[0058] The clamping component is a pressing component 29. The specific structure of the two-dimensional translation mechanism is as follows: it includes a support frame 21 that is fastened to the carrier plate 3 on both the left and right sides of the bottom. The support frame 21 has a third motor 22 and a fourth motor 23 fastened to its left and right sides respectively, so that the third motor 22 and the fourth motor 23 can be used as the direct power source for two-dimensional translation. The top output shaft of the third motor 22 is connected to a first drive wheel 24, and the top output shaft of the fourth motor 23 is connected to a second drive wheel 25. The first drive wheel 24 and the second drive wheel 25 are rotatably connected to the top left and right sides of the support frame 21 respectively, so that the power of the third motor 22 and the fourth motor 23 can be output through the first drive wheel 24 and the second drive wheel 25.

[0059] A shifting assembly 27 slides laterally on the top middle side of the support frame 21. The rear side of the shifting assembly 27 is connected to a synchronous belt 26, and the two front ends of the synchronous belt 26 are fastened to the shifting assembly 27. The synchronous belt 26 is connected to the outside of the first driving pulley 24 and the second driving pulley 25. The rotation of the first driving pulley 24 and the second driving pulley 25 causes the synchronous belt 26 to transmit power, driving the shifting assembly 27 to slide laterally on the top side of the support frame 21 and to move the shifting assembly 27 itself forward and backward. The steering of the first driving pulley 24 and the second driving pulley 25 is controlled by... The system can achieve independent movement in both the horizontal and vertical directions using a single synchronous belt 26. When the third motor 22 and the fourth motor 23 rotate in opposite directions at the same speed, the shifting component 27 will move in the forward and backward direction. When they rotate in the same direction at the same speed, the shifting component 27 will move in the left and right direction. A positioning plate 28 is fixed to the top center of the shifting component 27, and a pressing component 29 is locked to the top side of the positioning plate 28, so that the positioning plate 28 acts as a connector to ultimately transmit the two-dimensional translational motion to the pressing component 29.

[0060] The displacement assembly 27 includes a sliding plate 271 that is laterally slidably connected to the support frame 21 at the bottom center. The sliding plate 271 realizes the lateral movement freedom of the entire displacement assembly 27. The top four sides of the sliding plate 271 are rotatably connected to first guide wheels 272. The inner sides of the four first guide wheels 272 are all connected to the synchronous belt 26 to support and guide the synchronous belt 26, ensuring the smooth and accurate transmission of the synchronous belt 26. The top center of the sliding plate 271 has a support rod 273 that slides in the front-back direction. The support rod 273 realizes the second movement freedom based on the sliding plate 271. The top rear side of the support rod 273 is provided with a recess, and the top of the recess is rotatably connected to a second guide wheel 274. The rear side of the second guide wheel 274 is connected to the synchronous belt 26. Through the action of the synchronous belt 26 on the second guide wheel 274, the motion is converted into the front-back movement of the support rod 273. The top center of the support rod 273 is fixed to the positioning plate 28, and finally the composite motion is transmitted to the pressing assembly 29.

[0061] Among them, the first driving pulley 24, the second driving pulley 25, the four first guide pulleys 272 and the second guide pulley 274 are all located on the same horizontal plane, and the two ends of the synchronous belt 26 are connected to the front side of the support rod 273, which ensures that the synchronous belt 26 is always taut and moves in the same plane, resulting in high transmission efficiency and accurate and reliable motion trajectory.

[0062] The pressing assembly 29 includes a base 291 that is fastened to the bottom of the positioning plate 28. A vacuum suction cup 292 is embedded in the upper right side of the base 291, which uses negative pressure to adsorb the bottom of the frame section and provide the main fixing force. A cylinder 293 is locked and fixed on the top left side of the base 291, which serves as the power source for mechanical pressing. A column 294, which serves as a fixed fulcrum, is fixedly connected to the top right side of the cylinder 293. A push block 295 is connected to the output rod on the top middle side of the cylinder 293, which causes the push block 295 to move linearly under the drive of the cylinder 293.

[0063] A first push rod 296 is rotatably connected to the left side of the push block 295, converting the linear motion of the push block 295 into the motion of a linkage mechanism. The top of the first push rod 296 is rotatably connected to a pressure block 297 for pressing the upper edge of the frame section. The pressure block 297 directly contacts the upper surface of the workpiece to perform pressing. A support plate 298 is rotatably connected to the side of the pressure block 297 near the first push rod 296, which increases the lever arm and improves the pressing force. A second push rod 299 is rotatably connected to the middle of the support plate 298, and the bottom of the second push rod 299 is connected to the push rod 296. Block 295 is rotatably connected, and the right side of support plate 298 is rotatably connected to column 294, so that the entire clamping mechanism rotates around column 294. The second push rod 299 and the first push rod 296 form a stable linkage mechanism to ensure that the pressure block 297 is lifted and then pressed down. The inlet and outlet of vacuum suction cup 292 and cylinder 293 are connected to external gas generating equipment. Through external air source control, the clamping and releasing operations are automated. The combination of vacuum adsorption and mechanical clamping ensures the absolute stability of the frame segment during high-speed processing.

[0064] The working principle of the above-mentioned multi-degree-of-freedom attitude adjustment fixture is as follows:

[0065] First, the four frame segments are placed on the pads 291 of the four attitude adjustment units 2 respectively. The vacuum suction cup 292 is energized to generate negative pressure, which adsorbs the frame segments from the bottom. Then, the cylinder 293 is activated, pushing the push block 295 to move upward. Through the linkage mechanism composed of the first push rod 296 and the second push rod 299, the support plate 298 is driven to rotate around its hinge point with the column 294. Finally, the pressure block 297 is lifted and rotated downward to firmly press the frame segments from above. This forms a composite clamping force that combines vacuum adsorption and mechanical pressing, ensuring that the frame segments will not have any displacement or vibration during the subsequent high-speed and high-precision processing, thus guaranteeing the processing quality.

[0066] Secondly, the first motor 15 and the second motor 17 drive the first gear rod 16 and the second gear rod 18 to rotate respectively. Since the two gear rods mesh with the bidirectional gear plate 19 and are spatially perpendicular, their rotation is converted into independent linear motion of the bidirectional gear plate 19 in the left and right and front and back directions respectively. This motion is precisely guided by the sliding cooperation between the guide rod frame 110 and the first slide 12 and the second slide 13, and finally transmitted to the entire carrier plate 3 and all the posture adjustment units 2 on it via the support frame 111, thereby realizing the synchronous translation of the four frame segments in the horizontal plane and quickly moving them as a whole to the vicinity of the machining station of the CNC machine tool, preparing for subsequent fine docking.

[0067] Third, after the overall coarse positioning is completed, each posture adjustment unit 2 begins to work independently to achieve precise positioning of each frame segment. The third motor 22 and the fourth motor 23 in each posture adjustment unit 2 serve as power sources, driving the first drive wheel 24 and the second drive wheel 25 to drive the synchronous belt 26. By precisely controlling the direction combination of these two motors: when they rotate in the same direction, the synchronous belt 26 drives the shifting component 27 to slide laterally on the support frame 21; when they rotate in opposite directions, the synchronous belt 26 acts on the second guide wheel 274, pushing the support rod 273 to slide back and forth on the slide plate 271. Thus, the rotational input of the two motors is decomposed and synthesized into precise linear motion of the positioning plate 28 in two vertical directions in the horizontal plane, which can make micron-level fine adjustments to the position of a single frame segment, ensuring perfect alignment of the splicing slopes of adjacent frame segments.

[0068] Fourth, throughout the entire processing, the attitude adjustment fixture remains locked. After all processing steps (such as splice seam milling, polishing, and texture repair) are completed, cylinder 293 retracts first, driving pressure block 297 to lift and reset, releasing the mechanical clamping force above. Then, vacuum suction cup 292 releases negative pressure, loosening the adsorption on the frame segment. At this time, the planar shifting mechanism can move again to move the processed overall frame out of the processing area, thus completing a complete work cycle.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for connecting and machining a toothed, high-gloss frame, used to connect multiple strip-shaped frame segments pre-machined with toothed and high-gloss surfaces into a complete rectangular frame on a CNC machine tool, characterized in that, The method includes the following steps: S1. Border segment preprocessing: Provide at least four strip border segments that have been processed with toothed and glossy surfaces. Mill the ends of each border segment to be connected to form a splicing bevel with a predetermined angle. S2, clamping and positioning: clamp the frame segments one by one onto a multi-degree-of-freedom attitude adjustment fixture, which includes a base platform (1) and four attitude adjustment units (2) set on it. Each attitude adjustment unit (2) is used to independently clamp and adjust the spatial attitude of one of the frame segments. With the assistance of a laser positioner, drive each attitude adjustment unit (2) to move so that the splicing slope of adjacent frame segments is precisely aligned and a V-shaped splicing seam with a width of less than 0.1mm is formed at the joint. Each of the posture adjustment units (2) includes a two-dimensional translation mechanism. The two-dimensional translation mechanism includes a support frame (21) that is fastened to the carrier plate (3) on both the left and right sides of the bottom. A third motor (22) and a fourth motor (23) are fastened to the left and right sides of the support frame (21) respectively. The top output shaft of the third motor (22) is connected to a first drive wheel (24), and the top output shaft of the fourth motor (23) is connected to a second drive wheel (25). The first drive wheel (24) and the second drive wheel (25) are rotatably connected to the top left and right sides of the support frame (21) respectively. A displacement group slides laterally on the middle side of the top of the support frame (21). The component (27) is connected to a synchronous belt (26) at the rear side of the shifting assembly (27), and the two ends of the synchronous belt (26) at the front side are fastened to the shifting assembly (27). The synchronous belt (26) is connected to the outside of the first drive wheel (24) and the second drive wheel (25) so that the shifting assembly (27) can slide laterally on the top side of the support frame (21) and shift the shifting assembly (27) itself back and forth through the rotation of the first drive wheel (24) and the second drive wheel (25). A positioning plate (28) is fixed on the top middle side of the shifting assembly (27), and a pressing assembly (29) is locked on the top side of the positioning plate (28). The shifting assembly (27) includes a sliding plate (271) that is laterally slidably connected to the support frame (21) at the bottom center. The top four sides of the sliding plate (271) are rotatably connected to first guide wheels (272). The inner sides of the four first guide wheels (272) are all connected to the synchronous belt (26). The top center of the sliding plate (271) has a support rod (273) that slides in the front-back direction. The rear side of the top of the support rod (273) is provided with a recess, and the top of the recess is rotatably connected to a second guide wheel (274). The rear side of the second guide wheel (274) is connected to the synchronous belt (26). The top center of the support rod (273) is fixed to the positioning plate (28). The pressing assembly (29) includes a base (291) whose bottom is fastened to the positioning plate (28). A vacuum suction cup (292) is embedded in the upper right side of the base (291). A cylinder (293) is locked and fixed to the top left side of the base (291). A column (294) is fixedly connected to the top right side of the cylinder (293). A push block (295) is connected to the output rod on the top middle side of the cylinder (293). A first push rod (296) is rotatably connected to the left side of the push block (295). The first push rod (296) is topped with... The part is rotatably connected to the pressure block (297) used to press the frame section above, and the pressure block (297) is rotatably connected to the side of the first push rod (296) with a support plate (298). The middle part of the support plate (298) is rotatably connected to the second push rod (299), and the bottom of the second push rod (299) is rotatably connected to the push block (295). The right side of the support plate (298) is rotatably connected to the column (294). The inlet and outlet of the vacuum suction cup (292) and the cylinder (293) are both connected to the external gas generating equipment. S3. Splicing seam processing: Keep the multi-degree-of-freedom attitude adjustment fixture locked, use a milling cutter mounted on a CNC machine tool to finely mill the splicing seam to ensure that the angle at the splicing point is continuous and the transition is smooth. Then, use a contour polishing wheel mounted on a CNC machine tool to polish the splicing area so that its gloss is consistent with the adjacent high-gloss surface. S4. Texture repair at the splicing point: Replace the milling cutter on the CNC machine tool with a toothed tool, and process a continuous engraving texture at the splicing point according to the original toothed surface texture parameters on the frame segment, so as to ensure that the direction, depth and spacing of the texture are naturally connected with the original texture. S5. Overall deburring and post-processing: Use soft polishing tools to deburr the splicing area of ​​the entire rectangular frame, and finally clean and apply a surface coating.

2. The connection processing method for a high-gloss frame for toothed teeth according to claim 1, characterized in that: The angle of the splicing slope in step S1 is 45°, so that the four border segments are finally spliced ​​together to form a rectangular frame.

3. The connection processing method for a high-gloss frame for toothed teeth according to claim 1, characterized in that: In step S3, the shape of the contour polishing wheel is a conical wheel that matches the angle of the V-shaped splice.

4. The connection processing method for a high-gloss frame for toothed teeth according to claim 1, characterized in that: In step S3, after polishing the seam, an online inspection step is also included: the smoothness of the seam is scanned using a vision inspection system installed on the machine tool, and the inspection data is fed back to the CNC system. If the smoothness does not meet the requirements, the polishing process is automatically repeated.

5. The connection processing method for a high-gloss frame for toothed teeth according to claim 1, characterized in that: The base platform (1) and the four attitude adjustment units (2) mentioned in step S2 are connected by a carrier plate (3), and the four attitude adjustment units (2) are respectively located above the carrier plate (3) in pairs facing each other, so as to clamp and adjust the four sides of the rectangular frame.

6. The connection processing method for a high-gloss frame for toothed teeth according to claim 5, characterized in that: The base platform (1) includes a planar displacement mechanism, which is configured to drive the carrier plate (3) to perform translational movements in at least two directions, front-back and left-right, in the horizontal plane, so as to achieve overall alignment fine adjustment of the frame segments held by the four posture adjustment units (2).

7. A multi-degree-of-freedom attitude adjustment fixture, used to implement the connection processing method according to any one of claims 1 to 6, characterized in that: It includes a base platform (1), a carrier plate (3) and four attitude adjustment units (2); the base platform (1) is provided with a planar displacement mechanism for driving the carrier plate (3) to translate in the horizontal plane; the four attitude adjustment units (2) are arranged opposite to each other on the carrier plate (3); each attitude adjustment unit (2) includes a two-dimensional translation mechanism for driving the clamping component to perform two-dimensional translation in the horizontal plane, and the clamping component itself.

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