Connection machining method of screwdriver tooth highlight frame

Abstract

The invention relates to the technical field of television processing, and particularly discloses a connection processing method of a batch tooth highlight frame, which is characterized in that a pre-processed frame section is firstly clamped on a multi-degree-of-freedom posture adjusting clamp, and a splicing inclined plane is aligned to form a micro V-shaped seam through laser positioning and two-stage coordinated movement of the clamp; and then, under the condition that the same clamping state is kept, finish milling, profiling polishing, texture repairing and deburring treatment are sequentially conducted on the splicing seams, and finally frame splicing is completed. The clamp comprises a base platform capable of driving the plane of the carrier plate to move 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 combined clamping is adopted. By means of an integrated machining mode, multiple clamping errors are fundamentally avoided, it is ensured that the geometrical shape, glossiness and texture of the splicing position are completely unified with a frame body, invisible connection is achieved, and the machining precision, appearance quality and production efficiency of a large frame are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of television manufacturing and processing, in particular to a connecting and processing method of a high-light frame with batch teeth. BACKGROUND

[0002] The outer peripheral frame of a television not only bears the function of structural fixation, but also is a key decorative part that determines the appearance quality of the product. In order to achieve a high-level visual effect, a frame design combining a high-light surface and a batch tooth complex texture surface is often used. When processing the frame of a large-size television, the frame needs to be fixed on a clamp, and the clamp is installed on a machine tool. The frame is processed and spliced by the machine tool.

[0003] At present, Chinese patent application No. CN201711401019.7 discloses a special clamp for processing a television frame. The clamp includes a support seat, a rotating connecting column connected to the center of the upper surface of the support seat through a bearing, a turnover motor connected to the middle of the lower surface of the support seat through a bolt, an output shaft of the turnover motor penetrating through one side of the support seat, a connecting foot plate for fixing the clamp on a processing machine tool, a connecting frame driven by the turnover motor to rotate, a television frame driven by the connecting frame to rotate, a fixed side plate driven by an electric telescopic rod to move up and down, the fixed side plate driven by a first air cylinder telescopic rod to move forward and backward, and the television frame fixed in a fixed groove of the connecting frame by the fixed side plate. The special clamp for processing a television frame has a simple structure and is easy to operate. It not only makes it more convenient to clamp the television frame, but also enables the television frame to be converted, so that the processing speed is faster, providing convenience for people.

[0004] However, in the processing of the frame, the prior art usually processes multiple surfaces of a single complete frame, which is not convenient for high-precision butt joint between multiple frame segments. Moreover, due to the dispersion of processes, it is not easy to complete the full-range fine processing of the splicing part in one-time clamping, resulting in obvious splicing marks, which affects the overall quality and product level of the large frame. SUMMARY

[0005] The present application aims to provide a connecting and processing method of a high-light frame with batch teeth to solve the problems in the background art.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a connecting and processing method of a high-light frame with batch teeth, which is used to connect multiple strip frame segments with batch tooth surfaces and high-light surfaces into a complete rectangular frame on a numerical control machine tool. The method includes the following steps:

[0007] S1, frame section pretreatment: provide at least four completed batch tooth surface and high light surface processing of the strip frame section, and mill the end to be connected of each frame section to form a splicing bevel with a predetermined angle;

[0008] S2, clamping and positioning: clamp the frame sections one by one to a multi-degree-of-freedom pose clamp, which includes a base platform and four pose adjustment units arranged thereon, each of which is used to independently clamp and adjust the spatial pose of a frame section; through the assistance of a laser positioner, drive each pose adjustment unit to act, so that the splicing bevels of adjacent frame sections are accurately aligned, and a V-shaped splicing joint with a width of less than 0.1mm is formed at the joint;

[0009] S3, splicing joint processing: keep the locking state of the multi-degree-of-freedom pose clamp, and use a milling cutter installed on a numerical control machine tool to precisely mill the splicing joint, so as to ensure the continuity and smooth transition of the joint angle, and then use a profiling polishing wheel installed on the numerical control machine tool to polish the splicing area, so that the gloss is consistent with that of the adjacent high light surface;

[0010] S4, texture repair at the joint: replace the milling cutter on the numerical control machine tool with a batch tooth cutter, and process a continuous scratch texture at the joint according to the original batch tooth surface texture parameters on the frame section, so as to ensure that the texture direction, depth and pitch are naturally connected with the original texture;

[0011] S5, overall deburring and post-processing: use a soft polishing tool to deburr the splicing area of the entire rectangular frame, and finally clean and coat the surface.

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

[0013] Preferably, in step S3, the shape of the profiling polishing wheel is a conical wheel matching the angle of the V-shaped splicing joint, and the material of the profiling polishing wheel is nylon-based ultra-fine fiber containing micro diamond abrasive.

[0014] Preferably, after polishing the splicing joint in step S3, an online detection step is further included: using a visual detection system installed on the machine tool to scan the smoothness of the joint, and feeding the detection data to the numerical control system, if the smoothness does not meet the requirements, the polishing process is automatically repeated.

[0015] Preferably, the base platform and the four pose adjustment units in step S2 are connected through a carrier plate, and the four pose adjustment units are arranged in pairs opposite to each other above the carrier plate, for clamping and adjusting the four sides of the rectangular frame.

[0016] Preferably, the base platform comprises a planar displacement mechanism configured to drive the carrier plate to perform translational movement in at least two directions of front-back and left-right in a horizontal plane, so as to realize fine adjustment of the overall alignment of the four edge frame segments clamped by the four alignment units.

[0017] The specific structure of the planar displacement mechanism comprises a bottom plate, first and second sliding frames fixedly locked on the left and right sides of the top of the bottom plate, a support fixedly locked on the middle side of the top of the bottom plate, a first motor fixedly locked on the front middle side of the support, a first gear rod connected to the rear output shaft of the first motor and rotationally connected to the inside of the support, a second motor fixedly locked on the left upper side of the support, a second gear rod connected to the right output shaft of the second motor and rotationally connected to the inside of the support, the second gear rod being vertically distributed above the first gear rod, and the top sides of the first and second gear rods being in meshing transmission with a bidirectional toothed plate to drive the bidirectional toothed plate to perform displacement in the left-right and front-back directions, respectively, two cylinders being integrally formed on the top middle side of the bidirectional toothed plate, a guide rod holder being slidably arranged in the two cylinders, the guide rod holder being wrapped on the top sides of the first and second sliding frames, and a support frame being fixedly connected to the top of the bidirectional toothed plate and connected to the carrier plate.

[0018] Preferably, each alignment unit comprises a two-dimensional translational mechanism configured to drive the clamping assembly thereon to perform independent translational movement in two mutually perpendicular directions in a horizontal plane, so as to realize accurate positioning of a single edge frame segment.

[0019] The clamping assembly is a pressing assembly, and the specific structure of the two-dimensional translational mechanism comprises a support frame fixed to the carrier plate on the left and right sides of the bottom, third and fourth motors fixed to the inside of the support frame on the left and right sides, respectively, a first driving wheel connected to the top output shaft of the third motor, a second driving wheel connected to the top output shaft of the fourth motor, the first and second driving wheels being rotationally connected to the left and right sides of the top of the support frame, respectively, a displacement assembly sliding transversely on the top middle side of the support frame, a synchronous belt transmissionally connected to the displacement assembly on the middle rear side, the two ends of the synchronous belt being fixed to the displacement assembly on the front side, the synchronous belt being transmissionally connected to the outside of the first and second driving wheels, so as to drive the displacement assembly to slide transversely on the top side of the support frame and the displacement assembly to perform front-back displacement by rotation of the first and second driving wheels, a positioning plate fixed on the top middle side of the displacement assembly, and a pressing assembly fixedly locked on the top side of the positioning plate.

[0020] The shifting assembly comprises a sliding plate connected with the lateral plate frame through lateral sliding in the middle of the bottom, four first guide wheels are rotationally connected to the top of the four sides of the sliding plate, the inner sides of the four first guide wheels are connected with synchronous belts, a supporting rod is slidably arranged on the top of the sliding plate in the front-rear direction, a recess is arranged on the top of the rear side of the supporting rod, a second guide wheel is rotationally connected to the top of the recess, the rear side of the second guide wheel is connected with a synchronous belt, and the middle of the top of the supporting rod is fixed with a positioning plate.

[0021] The first driving wheel, the second driving wheel, the four first guide wheels and the second guide wheel are located on the same horizontal plane, and the two ends of the synchronous belt are connected to the front side of the supporting rod.

[0022] The pressing assembly comprises a pad base fixed with the positioning plate, a vacuum chuck is embedded in the middle of the right upper side of the pad base, a cylinder is fixedly connected to the left side of the top of the pad base, a vertical column is fixedly connected to the right side of the top of the cylinder, a push block is connected to the output rod of the top of the cylinder, a first push rod is rotationally connected to the left side of the push block, a pressing block for pressing the frame section from above is rotationally connected to the top of the first push rod, a supporting piece is rotationally connected to the side of the pressing block close to the first push rod, a second push rod is rotationally connected to the middle of the supporting piece, the bottom of the second push rod is rotationally connected with the push block, the right side of the supporting piece is rotationally connected with the vertical column, and the gas inlet and outlet of the vacuum chuck and the cylinder are connected with external gas generating equipment.

[0023] In addition, the application also provides a multi-degree-of-freedom posture adjusting clamp for realizing the connection processing method, comprising a base platform, a carrier plate and four posture adjusting units; the base platform is provided with a plane shifting mechanism for driving the carrier plate to translate in a horizontal plane; the carrier plate is provided with the four posture adjusting units in pairs opposite to each other; each of the posture adjusting units comprises a two-dimensional translation mechanism for driving a clamping assembly to translate in a horizontal plane in two dimensions, and the clamping assembly itself.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] The application integrates all key processes such as accurate alignment of the frame section, splicing seam milling, high light polishing and texture repair on a special multi-degree-of-freedom posture adjusting clamp by means of the integrated processing method and the special clamp, so that the cumulative error caused by multiple clamping and equipment replacement is fundamentally avoided, the geometric shape, surface gloss and fine texture of the splicing part can reach seamless connection and visual unity with the frame body, and the overall quality and yield of the large frame product are significantly improved.

[0026] The multi-degree-of-freedom posture adjusting clamp adopts a two-stage coordinated motion mode of overall coarse positioning and single fine adjustment, through a motor-driven plane displacement mechanism and a two-dimensional translation mechanism in each posture adjusting unit, the frame as a whole and each frame section can be independently and accurately adjusted in position and posture, and a composite clamping mode combining vacuum adsorption and linkage mechanical pressing is combined, high stability is provided for high-strength machining, not only millimeter-level butt joint accuracy is realized, but also operation difficulty and dependence on skilled workers are greatly reduced, and high efficiency and reliability of the machining process are ensured.

[0027] The batch tooth high light frame prepared by the "integrated" machining method and the special clamp is connected at the splicing position in a "invisible" manner, and has no breakpoint in vision and no trace in touch; meanwhile, the integrated machining process and stable clamping effectively guarantee the structural precision and strength of the frame; the requirements of appearance texture, structural reliability and production consistency of high-end display equipment on the decorative part are met. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure schematic view of the two posture adjusting units of the multi-degree-of-freedom posture adjusting clamp of the application is shown in the figure.

[0029] Figure 2 The structure schematic view of the base platform of the application is shown in the figure.

[0030] Figure 3 The three-dimensional structure schematic view of the first sliding frame and the guide rod frame connection of the application is shown in the figure.

[0031] Figure 4 The bottom view of the first gear rod, the second gear rod and the bidirectional tooth plate connection of the application is shown in the figure.

[0032] Figure 5 The structure schematic view of the posture adjusting unit of the application is shown in the figure.

[0033] Figure 6 The top view of the displacement assembly and the positioning plate connection of the application is shown in the figure.

[0034] Figure 7 The local three-dimensional structure schematic view of the sliding plate and the supporting rod connection of the application is shown in the figure.

[0035] Figure 8 The structure schematic view of the position pressing assembly of the application is shown in the figure.

[0036] In the figure: base platform-1, posture adjusting unit-2, carrier plate-3, bottom plate-11, first sliding frame-12, second sliding frame-13, support-14, first motor-15, first gear rod-16, second motor-17, second gear rod-18, bidirectional toothed plate-19, guide rod holder-110, support frame-111, support plate holder-21, third motor-22, fourth motor-23, first driving wheel-24, second driving wheel-25, synchronous belt-26, displacement assembly-27, positioning plate-28, pressure assembly-29, sliding plate-271, first guide wheel-272, support rod-273, second guide wheel-274, cushion seat-291, vacuum chuck-292, air cylinder-293, stand-294, push block-295, first push rod-296, pressing block-297, support sheet-298, second push rod-299. DETAILED DESCRIPTION

[0037] In order to further explain the technical solutions of the present application, the following specific embodiments are described in detail.

[0038] Please refer to Figures 1-8 The present application provides a connection processing method of batch tooth high light frame, which is used for connecting multiple bar-shaped frame sections with batch tooth surface and high light surface pre-processed into a complete rectangular frame on a numerical control machine tool. The core of the method is to realize accurate positioning and attitude adjustment of each frame section through a special multi-degree-of-freedom posture adjusting clamp, and to complete all finishing processes such as milling, polishing and texture repair of the splicing joint in the same clamping state, so as to ensure that the visual effect and tactile feeling of the splicing joint are completely consistent with the frame body, and solve the industry problems of large size frame overall processing difficulty and splicing joint quality difficult to guarantee.

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

[0040] S1, frame section pretreatment:

[0041] Four bar-shaped frame sections with batch tooth surface and high light surface processing completed are provided, and a numerical control milling machine is used to accurately mill the to-be-connected end of each frame section to form a splicing inclined surface with a predetermined angle. As a preferred embodiment, the angle of the splicing inclined surface is 45°, so that the four frame sections can finally be spliced into a tightly jointed rectangular frame, which lays a geometric foundation for subsequent high-precision butt joint.

[0042] S2, clamping and positioning:

[0043] The pre-processed frame segments are clamped one by one on a multi-degree-of-freedom posture adjusting fixture, which includes a base platform 1, a carrier plate 3, and four posture adjusting units 2 arranged on the carrier plate 3. The four posture adjusting units 2 are arranged in pairs on the carrier plate 3, corresponding to the four edges of the rectangular frame to be spliced. When clamping, the frame segments are placed on the clamping assemblies of each posture adjusting unit 2 and fixed. Then, the splicing bevels of adjacent frame segments are scanned and positioned by a laser positioner. According to the data fed back by the laser positioner, the numerical control system drives each posture adjusting unit 2 to act, finely adjusts the spatial posture of each frame segment, accurately aligns the splicing bevels of adjacent frame segments, and forms an extremely thin V-shaped splicing joint with a width of less than 0.1 mm at the butt joint, ensuring the initial position accuracy before splicing.

[0044] S3, splicing joint processing:

[0045] The locking state of the multi-degree-of-freedom posture adjusting fixture is maintained to keep the frame segments absolutely stable during processing.

[0046] First, a precision milling cutter installed on the spindle of the numerical control machine tool is used to fine mill the V-shaped splicing joint, remove the small misalignment allowance, and ensure the angle continuity, smooth transition, and seamless connection of the geometry of the frame body at the splicing joint.

[0047] Then, the processing tool is replaced with a profiled polishing wheel. Preferably, the profiled polishing wheel is a conical wheel with a shape matching the angle of the V-shaped splicing joint and is made of nylon-based ultra-fine fiber containing micro diamond abrasives. The profiled polishing wheel is controlled by a numerical control program to polish the splicing area, so that the surface gloss reaches a mirror effect consistent with the adjacent highlight surface (80GU or more).

[0048] As a preferred automatic solution, an online detection step can be added after this step: a visual detection system installed on the machine tool is used to scan the glossiness after polishing and feed the data back to the numerical control system. If the glossiness does not meet the preset requirements, the system can automatically repeat the polishing process to ensure stable quality.

[0049] S4, texture repair at the splicing joint:

[0050] The tool on the numerical control machine tool is replaced with a micro batch tooth cutter, and according to the original batch tooth texture parameters (such as notch depth, pitch, pattern) on the frame segment, a coherent notch texture is carefully processed at the splicing joint. Through accurate numerical control programming and cutter path control, it is ensured that the newly processed texture naturally connects with the original texture in terms of direction, depth and pitch, and there is no visual breakpoint or mutation.

[0051] S5, overall deburring and post-processing:

[0052] The soft polishing tool is used to gently deburr the splicing area of the entire rectangular frame, remove the tiny burrs generated during processing, and make the touch smooth. Finally, the complete frame is cleaned, dried, and coated with a surface coating (such as transparent wear-resistant paint) to improve its wear resistance and overall aesthetics.

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

[0054] Please refer to Figures 1-4 The base platform 1 includes a planar displacement mechanism configured to drive the carrier plate 3 to perform translational movement in at least two directions, front and back, and left and right, in the horizontal plane, to realize overall alignment and fine adjustment of the four attitude adjustment units 2 clamping the frame segments, thereby quickly completing the coarse positioning of the frame segments, and enabling the four frame segments to move synchronously in the horizontal plane to the position, thereby facilitating movement close to the numerical control machine tool operation for processing operation.

[0055] The specific structure of the planar displacement mechanism is as follows: a bottom plate 11 is provided with a first sliding frame 12 and a second sliding frame 13 locked and fixed on the left and right sides of the top of the bottom plate 11, providing a stable installation foundation and accurate guide rail for the entire mechanism; a support 14 is locked and fixed on the top of the middle side of the bottom plate 11, and a first motor 15 is locked and fixed on the front middle side of the support 14 as the main driving source for left and right direction translation; a first gear rod 16 is connected to the rear output shaft of the first motor 15 and rotatably connected to the inside of the support 14, so as to convert the rotary motion of the first motor 15 into the rotation of the first gear rod 16; a second motor 17 is locked and fixed on the left upper side of the support 14, and a second gear rod 18 is connected to the right output shaft of the second motor 17 and rotatably connected to the inside of the support 14, and the second motor 17 is the main driving source for forward and backward direction translation, so as 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, and the top sides of the first gear rod 16 and the second gear rod 18 are in meshing transmission with the bidirectional toothed plate 19, so as to respectively drive the bidirectional toothed plate 19 to move in the left and right and front and back directions, and through two independent and vertical gear and toothed plate transmission systems, accurate and independent control in two vertical directions in the horizontal plane is realized; two cylinders are integrally formed on the top middle side of the bidirectional toothed plate 19, and a guide rod holder 110 is slidably arranged in the two cylinders, and the sliding fit of the cylinder and the guide rod holder 110 provides stable guidance, ensures movement accuracy and prevents jamming; the guide rod holder 110 is wrapped and slid on the top sides of the first sliding frame 12 and the second sliding frame 13 respectively, a support 111 is fixedly connected to the top of the bidirectional toothed plate 19, and the top side of the support 111 is connected with the carrier plate 3, and the support 111 serves as a connecting piece to accurately transmit the movement of the planar displacement mechanism to the carrier plate 3 and all the attitude adjustment units 2 above.

[0057] Please refer to Figure 1 、 Figures 5-8 Each of the alignment units 2 comprises a two-dimensional translation mechanism configured to drive the clamping assembly thereon to independently translate in two mutually perpendicular directions in the horizontal plane to achieve accurate positioning of the individual frame segment, thereby independently fine-tune each frame segment to achieve extremely high butt joint accuracy.

[0058] The clamping assembly is a pressing assembly 29, and the two-dimensional translation mechanism specifically comprises a support frame 21 fastened to the carrier plate 3 on the left and right sides of the bottom, and a third motor 22 and a fourth motor 23 are fastened to the inside left and right sides of the support frame 21, respectively, to serve as the direct power source for two-dimensional translation; a first driving wheel 24 is connected to the top output shaft of the third motor 22, and a second driving wheel 25 is connected to the top output shaft of the fourth motor 23, and the first driving wheel 24 and the second driving wheel 25 are rotatably connected to the left and right sides of the top of the support frame 21, respectively, to output the power of the third motor 22 and the fourth motor 23 through the first driving wheel 24 and the second driving wheel 25.

[0059] A displacement assembly 27 is slidably arranged on the top middle side of the support frame 21, the displacement assembly 27 is drivingly connected to a synchronous belt 26 on the middle back side, and the front side of the synchronous belt 26 is fastened to the displacement assembly 27, and the synchronous belt 26 is drivingly connected to the outside of the first driving wheel 24 and the second driving wheel 25, so that the synchronous belt 26 transmits power through the rotation of the first driving wheel 24 and the second driving wheel 25 to drive the displacement assembly 27 to slide laterally on the top side of the support frame 21 and to displace the displacement assembly 27 itself forward and backward, and by controlling the rotation combination of the first driving wheel 24 and the second driving wheel 25, the synchronous belt 26 can realize independent movement in two degrees of freedom in the lateral and longitudinal directions; when the third motor 22 and the fourth motor 23 rotate in opposite directions at the same speed, the displacement assembly 27 moves in the forward and backward directions; when they rotate in the same direction at the same speed, the displacement assembly 27 moves in the left and right directions; a positioning plate 28 is fixed to the top middle side of the displacement assembly 27, and the positioning plate 28 is locked and fixed with the pressing assembly 29 on the top side, so that the positioning plate 28 serves as a connecting piece to finally transmit the two-dimensional translation movement to the pressing assembly 29.

[0060] The shifting assembly 27 comprises a sliding plate 271 connected to the lateral sliding plate frame 21 at the bottom middle side, which realizes the freedom of movement of the whole shifting assembly 27 in the lateral direction; the first guide wheels 272 are rotatably connected to the top four sides of the sliding plate 271, and the inner sides of the four first guide wheels 272 are drivingly connected to the synchronous belt 26 to support and guide the synchronous belt 26, ensuring smooth and accurate transmission of the synchronous belt 26; the supporting rod 273 is slidably arranged on the top middle side of the sliding plate 271 in the front-rear direction, which realizes the second freedom of movement based on the sliding plate 271; the recess is arranged on the top rear side of the supporting rod 273, and the second guide wheel 274 is rotatably connected to the top of the recess, and the rear side of the second guide wheel 274 is drivingly connected to the synchronous belt 26, which converts the movement into the front-rear movement of the supporting rod 273 through the synchronous belt 26; the top middle side of the supporting rod 273 is fixed to the positioning plate 28, and finally the compound motion is transmitted to the pressing assembly 29.

[0061] The first driving wheel 24, the second driving wheel 25, the four first guide wheels 272 and the second guide wheel 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 supporting rod 273, which ensures that the synchronous belt 26 is always tensioned and moves in the same plane, has high transmission efficiency, and has accurate and reliable movement trajectory.

[0062] The pressing assembly 29 comprises a pad seat 291 fixed to the positioning plate 28 at the bottom, a vacuum chuck 292 is embedded in the right middle upper side of the pad seat 291, which uses the negative pressure adsorption of the bottom of the frame section to provide the main fixing force; the air cylinder 293 is locked and fixed on the top left side of the pad seat 291, which is used as the power source of mechanical pressing; the upright column 294 is fixedly connected to the top right side of the air cylinder 293 as a fixed fulcrum, and the push block 295 is connected to the output rod of the top middle side of the air cylinder 293, which makes the push block 295 move linearly under the driving of the air cylinder 293;

[0063] The 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 the linkage mechanism; the top of the first push rod 296 is rotatably connected to the pressing block 297 for pressing the frame section from above, the pressing block 297 directly contacts the upper surface of the workpiece to implement pressing; the side close to the first push rod 296 of the pressing block 297 is rotatably connected to the supporting sheet 298, the supporting sheet 298 increases the force arm to improve the pressing force; the middle of the supporting sheet 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 supporting sheet 298 is rotatably connected to the vertical column 294, so that the whole pressing mechanism rotates around the vertical column 294, and the second push rod 299 and the first push rod 296 form a stable linkage mechanism to ensure that the pressing block 297 is lifted and then pressed downward; the inlet and outlet of the vacuum chuck 292 and the cylinder 293 are connected with an external gas generating device, and the automation operation of clamping and loosening is realized through external gas source control, and the combination of vacuum adsorption and mechanical pressing ensures the absolute stability of the frame section in the high-speed machining process.

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

[0065] Firstly, the four frame sections are respectively placed above the pad seats 291 of the four attitude adjustment units 2, the vacuum chucks 292 are electrified to generate negative pressure, and the frame sections are adsorbed from the bottom; then, the cylinders 293 act to drive the push blocks 295 to move upward, the linkage mechanism composed of the first push rod 296 and the second push rod 299 drives the supporting sheet 298 to rotate around the hinge point of the supporting sheet 298 and the vertical column 294, and finally drives the pressing block 297 to rotate downward after being lifted to stably press the frame section from above, forming a combined clamping force of vacuum adsorption and mechanical downward pressing, ensuring that the frame section does not displace or vibrate in the subsequent high-speed and high-precision machining process, and ensuring the machining quality;

[0066] Secondly, the first motor 15 and the second motor 17 respectively drive the first gear rod 16 and the second gear rod 18 to rotate, since the two gear rods are meshed with the bidirectional toothed plate 19 and are vertically distributed in space, their rotation is respectively converted into the independent linear motion of the bidirectional toothed plate 19 in the left-right and front-back directions, the motion is accurately guided through the sliding cooperation of the guide rod frame 110 and the first slide 12 and the second slide 13, and finally transmitted to the whole loading plate 3 and all the attitude adjustment units 2 thereon through the support frame 111, so as to realize the synchronous translation of the four frame sections in the horizontal plane, quickly move them as a whole to the machining station of the numerical control machine tool, and prepare for the subsequent fine butt joint;

[0067] Third, after the overall coarse positioning is completed, each attitude adjustment unit 2 starts to work independently to achieve the fine positioning of each frame section. The third motor 22 and the fourth motor 23 in each attitude adjustment unit 2 serve as the power source, and drive the first driving wheel 24 and the second driving wheel 25 to move the synchronous belt 26. Through the accurate control of the rotation direction of the two motors, when they rotate in the same direction, the synchronous belt 26 drives the displacement assembly 27 to slide on the support plate frame 21; when they rotate in opposite directions, the synchronous belt 26 acts on the second guide wheel 274, and pushes the support rod 273 to slide on the sliding plate 271 in the front-back direction; thus, the rotation input of the two motors is decomposed and combined into the accurate linear motion of the positioning plate 28 in two perpendicular directions in the horizontal plane, which can make micron-level fine adjustment of the position of a single frame section, and ensure that the splicing bevels of adjacent frame sections are perfectly aligned.

[0068] Fourth, during the entire processing process, the attitude adjustment clamp is always in a locked state. After all processing steps (such as splicing seam milling, polishing, and texture repair) are completed, the cylinder 293 is first retracted, driving the pressing block 297 to lift and reset, thereby releasing the mechanical pressing force from above. Then, the vacuum chuck 292 releases the negative pressure, releasing the adsorption of the frame section. At this time, the planar displacement mechanism can act again to move the entire frame that has been processed out of the processing area, thereby completing a complete working cycle.

[0069] The above only describes the preferred examples of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for connecting the segments of a batch toothing high-light frame, for connecting a plurality of bar-shaped frame segments, pre-processed with batch toothing and high-light surfaces, into a complete rectangular frame on a numerical control machine tool, characterized in that, The method comprises the following steps: S1, frame section pretreatment: providing at least four strip-shaped frame sections which have completed batch tooth surface and high light surface processing, milling the to-be-connected end of each frame section to form a splicing bevel with a predetermined angle; S2, clamping and positioning: clamping the frame sections one by one to a multi-degree-of-freedom pose adjusting clamp, the multi-degree-of-freedom pose adjusting clamp comprising a base platform (1) and four pose adjusting units (2) arranged thereon, each pose adjusting unit (2) being used for independently clamping and adjusting the spatial pose of a frame section; through the assistance of a laser positioner, driving each pose adjusting unit (2) to move, so that the splicing bevels of adjacent frame sections are accurately aligned, and a V-shaped splicing joint with a width less than 0.1 mm is formed at the joint; S3, splicing joint processing: keeping the locking state of the multi-degree-of-freedom pose adjusting clamp, using a milling cutter installed on a numerical control machine tool to precisely mill the splicing joint, so as to ensure the continuity and smooth transition of the joint, and then using a profiling polishing wheel installed on the numerical control machine tool to polish the splicing area, so that the gloss of the splicing area is consistent with that of the adjacent high light surface; S4, texture repair at the joint: replacing the milling cutter on the numerical control machine tool with a batch tooth cutter, and processing continuous scratch texture at the joint according to the original batch tooth surface texture parameters on the frame section, so as to ensure that the direction, depth and pitch of the texture naturally connect with the original texture; S5, overall deburring and post-processing: using a soft polishing tool to deburr the splicing area of the entire rectangular frame, and finally cleaning and applying a surface coating.

2. The method of claim 1, wherein the method further comprises: The angle of the splicing bevel in step S1 is 45°, so that the four frame sections are finally spliced to form a rectangular frame. ​ 3. The method of claim 1, wherein the method further comprises: In step S3, the shape of the profiling polishing wheel is a conical wheel matching the angle of the V-shaped splicing joint. ​ 4. The method of claim 1, wherein the method further comprises: In step S3, after polishing the splicing joint, an online detection step is further included: using a visual detection system installed on the machine tool to scan the smoothness of the joint, and feeding the detection data to the numerical control system, if the smoothness does not meet the requirements, the polishing process is automatically repeated. ​ 5. The method of claim 1, wherein the method further comprises: In step S2, the base platform (1) and the four pose adjusting units (2) are connected through a carrier plate (3), and the four pose adjusting units (2) are arranged opposite to each other above the carrier plate (3) for clamping and adjusting the four edges of the rectangular frame. ​ 6. The method of claim 5, wherein the method further comprises: The base platform (1) comprises a plane displacement mechanism configured to drive the carrier plate (3) to move in at least front-back and left-right directions in the horizontal plane, so as to realize the overall alignment and fine adjustment of the frame sections clamped by the four pose adjusting units (2).

7. The method of claim 5, wherein the method further comprises: Each pose adjusting unit (2) comprises a two-dimensional translation mechanism configured to drive the clamping assembly thereon to move independently in two perpendicular directions in the horizontal plane, so as to realize the accurate positioning of a single frame section. ​ 8. The method of claim 7, wherein the method further comprises: The two-dimensional translation mechanism comprises a first driving source, a second driving source and a transmission assembly, and the transmission assembly is configured to convert the rotary motion of the first driving source and the second driving source into the linear motion of the clamping assembly along the first direction and the second direction, respectively.

9. The method of claim 7, wherein the method further comprises: The clamping assembly comprises a vacuum chuck (292) for adsorbing and fixing the bottom of the frame segment and a mechanical pressing device for pressing the frame segment from above, and the vacuum chuck (292) cooperates with the mechanical pressing device to reliably fix the frame segment. ​ 10. A multi-degree-of-freedom attitude adjusting jig for realizing the joining process method according to any one of claims 1 to 9, characterized by: The device comprises a base platform (1), a carrier plate (3) and four attitude adjusting units (2); the base platform (1) is provided with a plane displacement mechanism for driving the carrier plate (3) to translate in a horizontal plane; the carrier plate (3) is provided with the four attitude adjusting units (2) in pairs opposite to each other; each attitude adjusting unit (2) comprises a two-dimensional translation mechanism for driving a clamping assembly to translate in a two-dimensional manner in a horizontal plane, and the clamping assembly itself.

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