Milling and grinding device with shape-following floating and adjustable studs for composite wallboard

Abstract

The application discloses a kind of composite wallboard stud conformal floating adjustable milling and grinding devices, belong to composite material processing equipment and precision machining technical field, the milling and grinding device includes: support frame;Main frame is rotationally connected to support frame, with through-hole;Polishing tool, pass through main frame by through-hole;Limiting piece, be in main frame, for keeping the radial position of polishing tool relative to through-hole;Positioning member is configured to lock the angle of main frame relative to support frame, limiting piece includes: clamping seat, with the accommodating cavity matching the side of polishing tool, so that polishing tool and through-hole form gap;Compression unit is configured to compress polishing tool in accommodating cavity;Height adjustment unit is configured to drive compression unit to move along the penetration direction of polishing tool.The application is adjusted by the angle of main frame and locked by positioning member, solves the problem of overcut or uneven allowance caused by insufficient angle adjustment accuracy of traditional equipment, and is suitable for precision machining scene of diversified wallboard stud.

Description

Technical Field

[0001] This invention belongs to the field of composite material processing equipment and precision machining technology, specifically relating to a milling device for adjustable floating vertical ribs of composite wall panels. Background Technology

[0002] In the aerospace field, large composite stiffened panels are widely used in the manufacture of aircraft structural components due to their unique lightweight, high strength, and high stiffness. However, throughout the manufacturing process, especially after curing, the processing and subsequent treatment of these panels still face many technical challenges, severely restricting their application and promotion.

[0003] Currently, composite reinforced wall panels exhibit complex surface deformation after curing and demolding, making it difficult to meet subsequent processing requirements in terms of surface morphology. Traditional drilling and milling equipment can only process based on theoretical digital models and cannot adaptively identify the deformed surface, easily leading to overcutting. To avoid overcutting, a large processing allowance must be reserved during processing, resulting in a significant increase in the height of residual steps, directly affecting processing accuracy and surface quality. To solve the problem of residual steps, existing technologies typically employ manual measurement and dynamic adjustment of CNC equipment parameters. However, this method is time-consuming, labor-intensive, and inefficient. Furthermore, due to part deformation and the height difference of the ribs, it is still difficult to completely avoid overcutting or under-processing, resulting in unstable processing quality.

[0004] Meanwhile, the varying thicknesses of the wall panels and the diverse types of vertical rib structures make it difficult for traditional drilling and milling equipment to adapt to various structures. Complex parameter adjustments are required to achieve adaptive processing for different configurations. For example, clamping is difficult; if traditional five-axis drilling and milling equipment is used with rigid contact clamping, and the edge effects generated by traditional processing methods can easily cause fiber tearing and matrix damage to the composite material (such as in the R-angle area) during processing. If manual milling is used, the tools have the advantages of flexibility and low cost, but their accuracy and efficiency are insufficient to meet the needs of large composite material processing, and there are significant safety hazards, making the processing difficult.

[0005] Therefore, it is necessary to design a milling device for the adjustable floating of the vertical ribs of composite wall panels, which can effectively avoid demolding damage and stringer end defects during the curing and molding of the wall panels. Summary of the Invention

[0006] The purpose of this application is to provide a milling device for adjustable floating of vertical ribs in composite wall panels, which has the advantages of improving machining accuracy, avoiding overcutting, adapting to complex surface deformation, enhancing tool positioning stability, and adapting to different thicknesses and structures.

[0007] The technical solution adopted by the present invention to achieve the above objectives is as follows: a milling device for adjustable floating of vertical ribs of composite wall panels, comprising: a support frame;

[0008] The main frame is rotatably connected to the support frame and has through holes;

[0009] A polishing tool is used to penetrate the main frame through a through-hole.

[0010] A limiting component, located within the main frame, is used to maintain the radial position of the grinding tool relative to the through hole;

[0011] The positioning component is configured to lock the angle between the main frame and the support frame.

[0012] Preferably, it also includes a pivot, the support frame and the main frame are connected by the pivot, and the positioning element includes a positioning top screw, which is screwed to the side of the support frame and its end abuts against the side of the main frame to fix the angle.

[0013] Preferably, the limiting member includes: a clamping seat having a receiving cavity that matches the side of the grinding tool, so that the grinding tool forms a gap with the through hole; a clamping unit configured to clamp the grinding tool in the receiving cavity; and a height adjustment unit configured to drive the clamping unit to move along the through direction of the grinding tool.

[0014] Preferably, the clamping unit includes: a slider, movably connected to the clamping seat; and a first driving member, threadedly connected to the clamping seat, for driving the slider to press against the side of the grinding tool, so that the grinding tool is clamped in the receiving cavity and a gap is maintained.

[0015] Preferably, the height adjustment unit includes a second drive member and a spring. The second drive member is threadedly connected to the top of the main frame, and the lower end of the second drive member is threadedly connected to the clamping seat. The spring is sleeved on the second drive member and its two ends abut against the main frame and the clamping seat, respectively.

[0016] Preferably, a height adjustment pad is also provided between the bottom of the clamping seat and the main frame.

[0017] Preferably, the clamping unit further includes an elastic pad, which is compressed between the slider and the grinding tool to form a flexible air gap layer.

[0018] Preferably, a scale is provided on the side of the main frame, which is used to indicate the rotation angle of the main frame relative to the support frame.

[0019] Preferably, the main frame rotates relative to the support frame around the rotation axis, and the height adjustment unit drives the pressing unit to move along the moving axis; wherein, the rotation axis and the moving axis are perpendicular to each other in space, and their perpendicular relationship is independent of the intersection state of the axes.

[0020] Preferably, a ball-head plunger is also connected to the lower surface of the support frame.

[0021] Compared with existing technologies, this invention has the following advantages: The main frame angle adjustment and positioning locking structure enables rapid adjustment and reliable fixing of the processing angle, effectively solving the problems of overcutting or uneven allowance caused by insufficient angle adjustment accuracy in traditional equipment. It can adapt to the processing needs of composite panels with different curvatures. The limiting component adopts a floating clamping design, allowing the grinding tool to float axially while maintaining radial positioning accuracy, reducing processing stress and minimizing the risk of fiber tearing. The clamping unit achieves stress-free clamping through a composite structure of slider and elastic pad, preventing direct contact between the metal part and the tool while suppressing processing vibration and improving processing stability. The height adjustment unit, combined with screw drive and spring buffer, achieves stepless adjustment and dynamic compensation of the grinding tool height, automatically adjusting the processing position according to the height difference of the workpiece's vertical ribs, avoiding overcutting or undercutting caused by rib height deviation. The ball-head plunger elastic support structure can adapt to changes in surface height, forming flexible contact and avoiding fiber lamination damage caused by rigid contact. The synergistic effect of the above design significantly improves the yield and efficiency of processing, reduces equipment costs, and stably controls the residual step height of composite material ribs, systematically solving the problems of precision loss control and damage risk in composite material processing. Attached Figure Description

[0022] Figure 1 A schematic diagram of a milling device for adjusting the floating shape of vertical ribs in composite wall panels;

[0023] Figure 2 This is a schematic diagram showing the clamp base without a height adjustment block installed at the bottom;

[0024] Figure 3 A schematic diagram showing a height adjustment block installed at the bottom of the clamping base;

[0025] Figure 4 This is a schematic diagram of the structure after angle adjustment in a milling device for adjustable floating ribs of composite wall panels.

[0026] Figure 5 This is a schematic diagram of the support structure in Embodiment 2 of the present invention;

[0027] Figure 6 This is a schematic diagram of the constant pressure component structure in Embodiment 2 of the present invention.

[0028] Reference numerals: 1. Ball plunger; 2. Support frame; 3. First drive component; 4. Slider; 5. Elastic pad; 6. Spring; 7. Main frame; 8. Second drive component; 9. Grinding tool; 10. Clamping seat; 11. Rotary shaft; 12. Positioning top screw; 13. Grinding rod; 14. Height adjustment pad; 15. Base; 16. Support; 17. Roller; 18. Shaft; 19. Constant pressure component; 20. Support rod; 21. Elastic component. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings:

[0030] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] See appendix Figure 1 -Appendix Figure 2 A milling device for adjustable floating ribs of composite wall panels includes: a support frame 2; a main frame 7 rotatably connected to the support frame 2 and having a through hole; a grinding tool 9 passing through the through hole through the main frame 7; a limiting member disposed inside the main frame 7 for maintaining the radial position of the grinding tool 9 relative to the through hole; and a positioning member configured to lock the angle of the main frame 7 relative to the support frame 2.

[0032] The support frame 2 refers to the fixed frame used to support the rotation of the main frame 7. The material of the support frame 2 includes, but is not limited to, 6061 aluminum alloy. When adjusting the angle, to achieve good damping and fixing effects, a suitable interference fit can be set. The outer contour width and inner width of the main frame 7 are the mating dimensions, and the mating dimensions are an interference fit. The surface roughness of the mating surfaces and the scale reference surface is ≤ Ra1.6. Other non-assembly surfaces ≤ Ra3.2 .

[0033] There are two through holes, located at the top and bottom of the main frame 7. The positions of the two through holes are set to allow the grinding tool 9 to pass through the main frame 7 axially. The diameter of the through holes is larger than the radial profile of the side surface of the grinding tool 9.

[0034] The grinding tool 9 is made of cemented carbide sandblasting material, with a customized grit size (80 mesh) for T700 unidirectional carbon fiber material. The cutting edge diameter is 8mm, and the cutting edge length is ≥5mm. It is water-cooled during processing, with a single cutting depth ≥0.3mm, a cutting width of 80% of the tool diameter, and a rotation speed of 2000 r / min. The grinding tool 9 has a grinding rod 13 at its bottom, which is used for cutting the part.

[0035] The grinding tool 9 passes through the support frame 2 and is radially locked relative to the main frame 7 by the limiting component, ensuring that the grinding tool 9 does not contact the through hole and that the grinding tool 9 and the main frame 7 are designed to be in a non-contact manner.

[0036] The grinding tool 9 is installed inside the main frame 7 by a limiting member. Under the constraint of the limiting member, the grinding tool 9 maintains radial constraint and allows axial floating.

[0037] The positioning component refers to the locking device that fixes the rotation angle of the main frame 7, including but not limited to the tightening screw that is placed against the side of the frame to ensure the stability of the machining angle.

[0038] The system also includes a rotating shaft 11, with the support frame 2 and main frame 7 connected via the rotating shaft 11. The positioning component includes a positioning top screw 12, which is screwed onto the side of the support frame 2, with its end abutting against the side of the main frame 7 to fix the angle. The main frame 7, while supporting the grinding tool 9 via a limiting component, can rotate around the rotating shaft 11. The rotating shaft 11, the main frame 7, and the support frame 2 use an H7 / k6 fit, with a hole tolerance of +0.018 / 0 and a shaft tolerance of 0.011 / +0.002. This fit, when manually adjusted, generates moderate friction due to the small interference fit between the shaft and the hole. When processing composite panels with different curvatures, the operator can first loosen the positioning top screw 12 to adjust the angle of the main frame 7, and then tighten the screw to lock the angle. The threaded adjustment structure allows for precise control of the locking force, preventing deformation of components due to excessive tightness or angle deviation due to excessive looseness.

[0039] In the above technical solution, the support frame 2 and the main frame 7 are connected by a rotating shaft 11. The main frame 7 rotates around the rotating shaft 11 to adjust the machining angle. The grinding tool 9 passes through the through hole of the main frame 7 and is clamped by a limiting member. The clamping force keeps the tool radially positioned but allows axial floating. During machining, the angle of the main frame 7 is adjusted according to the workpiece deformation and then fixed by the positioning member. The tool moves adaptively along the workpiece surface under the constraint of the limiting member. Compared with traditional rigid clamping, this application, through the adjustment of the angle of the main frame 7 and the floating clamping of the limiting member, can dynamically adjust the machining angle according to the actual deformation of the workpiece, avoiding overcutting caused by the deviation between the theoretical model and the actual object. The grinding tool 9 maintains radial positioning accuracy under the constraint of the limiting member, while allowing axial floating to reduce machining stress and reduce the risk of fiber tearing. The quick locking function of the positioning member improves the machining efficiency of different structural parts and is suitable for machining various wall panel ribs. Through the threaded drive clamping lock, stepless adjustment of any angle can be achieved without opening fixed holes on the main frame 7, while avoiding the stress concentration problem caused by rigid connection.

[0040] Through the above technical solution, this application achieves rapid adjustment and reliable locking of the processing angle, effectively solving the problems of overcutting or uneven allowance caused by insufficient angle adjustment accuracy in traditional equipment. This structure can adapt to the processing requirements of wall panels with different curvatures, and reduces direct processing damage to the main frame 7 structure through abutment locking, ensuring the processing quality stability of the composite material rib end area.

[0041] The limiting component includes: a clamping seat 10 having a receiving cavity that matches the side of the grinding tool 9, so that the grinding tool 9 forms a gap with the through hole; a clamping unit configured to clamp the grinding tool 9 in the receiving cavity; and a height adjustment unit configured to drive the clamping unit to move along the through direction of the grinding tool 9.

[0042] The clamping seat 10 is a fixing component set inside the main frame 7 and having a receiving cavity that matches the shape of the side of the grinding tool 9. Specifically, it can be a metal block with a U-shaped groove or a semi-circular groove. The receiving cavity limits the side of the grinding tool 9 to form a gap between the grinding tool 9 and the through hole, forming a design clearance between the grinding tool 9 and the main frame 7, which facilitates the installation of the grinding tool 9, and at the same time prevents the vibration generated by the grinding tool 9 during processing from being transmitted to the main frame 7, reducing the wear caused by the intermittent contact between the main frame 7 and the grinding tool 9.

[0043] Among them, the clamping unit refers to the mechanism used to apply clamping force to the grinding tool 9. Specifically, it can be realized by a combination structure of slider 4 and first driving member 3. By rotating the screw thread, slider 4 is pushed to contact the side wall of grinding tool 9, so as to maintain uniform gap while ensuring clamping force.

[0044] The height adjustment unit refers to a device that can adjust the position of the clamping unit along the axis of the grinding tool 9. Specifically, it can be implemented by a combination structure of threaded rod and spring. By rotating the threaded rod, the clamping seat 10 is moved up and down, and the spring provides buffering and maintains the stability of the adjusted position.

[0045] This solution uses a clamping unit to radially fix the grinding tool 9 and design for clearance. Simultaneously, a height adjustment mechanism composed of a threaded rod and a spring allows for continuous height adjustment of the grinding tool 9. This mechanism can compensate for workpiece thickness differences through vertical displacement, quickly adapting to different rib height differences on the workpiece, reducing the number of manual adjustments and improving processing efficiency. The elastic clamping of the clamping unit ensures tool positioning accuracy while eliminating the impact of processing vibration on equipment stability.

[0046] The clamping unit includes: a slider 4, which is movably connected to the clamping seat 10; and a first driving member 3, which is threadedly connected to the clamping seat 10, for driving the slider 4 to press against the side of the grinding tool 9, so that the grinding tool 9 is pressed in the receiving cavity and a gap is maintained.

[0047] The slider 4 is a component that is movably connected to the clamping seat 10 via a sliding mechanism. Specifically, it can be implemented using a structure with guide rails or grooves, changing its contact position with the grinding tool 9 through linear displacement. The first driving component 3 is an adjusting component that generates axial thrust through threaded rotation. Specifically, it can be implemented using a screw structure with a handwheel or handle. Rotating the first driving component 3 drives the slider 4 to move along the inner cavity of the clamping seat 10. The clearance refers to the gap formed between the grinding tool 9 and the inner wall of the through hole. Specifically, it can be achieved through the dimensional tolerance of the clamping seat 10's accommodating cavity and the fit of the slider 4's pressing position, preventing the grinding tool 9 from radially shifting due to vibration or force during processing.

[0048] Specifically, the first driving member 3 is fitted into a threaded hole in the side wall of the clamping base 10, with its end contacting the slider 4. When the first driving member 3 is rotated, its threaded structure pushes the slider 4 along the guide rail inside the clamping base 10 toward the grinding tool 9. The slider 4 presses against the side wall of the grinding tool 9 through the elastic pad 5 or a rigid contact surface, keeping it in a fixed radial position within the receiving cavity. During this process, the dimensional design of the receiving cavity of the clamping base 10 ensures that a uniform gap is formed between the grinding tool 9 and the inner wall of the through hole, thereby avoiding overcutting or insufficient machining allowance due to tool wobble during processing.

[0049] Compared to the rigid clamping of existing technologies, the present invention achieves adjustable control of the lateral clamping force of the tool through the combination of the slider 4 and the first drive member 3 of the thread. At the same time, the gap design provides an adaptive floating space for the tool, effectively reducing the risk of rigid interference during the processing.

[0050] The height adjustment unit includes a second drive member 8 and a spring 6. The second drive member 8 is threadedly connected to the top of the main frame 7, and the lower end of the second drive member 8 is threadedly connected to the clamping seat 10. The spring 6 is sleeved on the second drive member 8 and its two ends abut against the main frame 7 and the clamping seat 10 respectively.

[0051] The second driving component 8 is a transmission part that achieves height adjustment through a threaded pair. Specifically, it can be implemented using a screw structure with double-threaded ends. Its upper thread connects to the main frame 7, and its lower thread connects to the clamping seat 10. This structure converts rotational motion into axial displacement. The spring 6 is an element that provides elastic support. Specifically, it can be a helical spring sleeved on the outer periphery of the second driving component 8. It forms a preload by contacting the main frame 7 and the clamping seat 10 at both ends, respectively, maintaining the contact state between the clamping seat 10 and the main frame 7 during height adjustment. The main frame 7 has an opening on one side. The clamping block is installed in the main frame 7 through the opening and can be raised and lowered. The end face of the opening has height markings, and the clamping block has positioning marks that mate with the height markings. The height markings are arranged at equal intervals along the lifting direction of the clamping block.

[0052] Specifically, when the height of the grinding tool 9 needs to be adjusted, the second drive component 8 is rotated to create a lifting motion within the threaded hole at the top of the main frame 7. Since the lower end of the second drive component 8 is threadedly connected to the clamping seat 10, the rotational motion pushes the clamping seat 10 to move axially, thereby changing the overall height of the clamping unit. During this process, the spring 6 is compressed or released, and its elastic force always acts between the clamping seat 10 and the main frame 7, eliminating the backlash in the threaded pair and maintaining the positional stability of the clamping seat 10 in its non-adjusted state. During processing, the elastic deformation of the spring 6 absorbs external impact loads, avoiding the loss of positioning accuracy caused by rigid contact.

[0053] This solution combines threaded drive with elastic elements to achieve precise displacement control while forming flexible support, ensuring adjustment accuracy and reducing the risk of mechanical wear.

[0054] Through the above technical solution, this application achieves stepless adjustment and dynamic compensation in the height direction of the grinding tool 9, which can automatically adjust the processing position according to the actual height difference of the vertical ribs of the composite material wall panel, effectively avoiding overcutting or undercutting caused by rib height deviation. The buffering effect of the spring 6 can eliminate the influence of equipment vibration on processing accuracy, and the bidirectional adjustment capability of the threaded pair allows the device to adapt to the processing needs of workpieces of different thicknesses.

[0055] See appendix Figure 3 A height adjustment pad 14 is also provided between the bottom of the clamping base 10 and the main body frame 7. The height adjustment pad 14 is a replaceable support structure located between the clamping base 10 and the main body frame 7. It can be implemented using metal or plastic blocks of different thicknesses. The relative height between the clamping base 10 and the main body frame 7 can be adjusted by stacking different numbers of pads or by replacing individual pads of different thicknesses. This structure is used to compensate for height deviations at the contact position between the processing device and the workpiece, directly changing the mounting reference surface of the clamping base 10 mechanically, thus ensuring a precise processing gap between the grinding tool 9 and the workpiece surface.

[0056] The clamping unit also includes an elastic pad 5, which is compressed between the slider 4 and the grinding tool 9 to form a flexible buffer layer. The elastic pad 5 is a deformable buffer component placed between the slider 4 and the grinding tool 9, specifically made of rubber, polyurethane, or silicone. Its function is to absorb the impact force generated during processing through elastic deformation, avoiding stress concentration caused by rigid contact. The flexible buffer layer refers to the variable gap space formed between the slider 4 and the grinding tool 9 after the elastic pad 5 is compressed and deformed. This can be achieved by adjusting the thickness or hardness of the elastic pad 5. Its function is to provide axial fine-tuning space for the grinding tool 9, allowing it to adapt to local deformation of the workpiece surface during processing.

[0057] Specifically, when the slider 4 is pushed towards the side of the grinding tool 9 by the first driving member 3, the elastic pad 5 is clamped between them and undergoes compression deformation. Under the buffering effect of the elastic pad 5, a dynamically adjustable gap is formed between the grinding tool 9 and the clamping seat 10. This gap allows the grinding tool 9 to generate micron-level displacement compensation according to the curvature changes of the workpiece surface during processing. For example, when there are protrusions or depressions on the workpiece surface, the deformation of the elastic pad 5 will automatically adjust with changes in contact pressure, maintaining a stable contact force between the grinding tool 9 and the workpiece.

[0058] Compared to existing technologies, the traditional rigid clamping method involves direct contact between the slider 4 and the grinding tool 9, resulting in an inability to adaptively adjust the contact pressure during processing and a tendency to create stress concentration points on the composite material surface. This solution, however, utilizes the flexible, air-retaining layer formed by the elastic pad 5 to achieve a more uniform distribution of contact pressure and avoids tool jamming caused by localized workpiece deformation.

[0059] See appendix Figure 4 The main frame 7 has a dial on its side, which indicates the rotation angle of the main frame 7 relative to the support frame 2. The dial has angle markings, which are arranged radially at equal angles with the axis of the rotating shaft 11 as a reference. The upper surface of the support frame 2 has a reference edge that can mate with the angle markings. Angle positioning is performed by visually inspecting the alignment of the reference edge with the angle markings, and the angle is locked using a positioning device after positioning. The rotating shaft 11 and the dial allow the main frame to carry the grinding tool 9 for adjustment within the angle range of 0-15°.

[0060] The main frame 7 rotates relative to the support frame 2 around the rotation axis 11, and the height adjustment unit drives the pressing unit to move along the moving axis; wherein, the rotation axis 11 and the moving axis are perpendicular to each other in space, and their perpendicular relationship is independent of the intersection state of the axes.

[0061] The rotation axis 11 and the moving axis are orthogonal in spatial layout, but their spatial positions can be staggered. For example, the rotation axis 11 can be located at the front end of the main frame 7, while the moving axis can be located at the rear end of the main frame 7. This design ensures that angle adjustment and height adjustment do not interfere with each other, and there is no need to repeatedly calibrate the reference position during operation, thereby improving processing efficiency.

[0062] A ball-head plunger 1 is also connected to the lower surface of the support frame 2. The ball-head plunger 1 is embedded in the bottom of the support frame 2, serving as a rolling pulley structure to support the entire fixture during movement. The ball-head plunger 1 is a spring-loaded contact component with a spherical end. Specifically, it can be implemented using a combination of a built-in spring and a stainless steel ball head. The ball head end can retract under pressure and generate elastic contact force. This structure can form multi-point elastic support when the support frame 2 contacts the workpiece surface, avoiding localized stress concentration caused by rigid contact.

[0063] When the device is placed on the surface of the composite panel, the ball head of the ball plunger 1 contacts the curved surface of the panel and, under the action of the spring, generates adaptive floating, creating a flexible contact between the support frame 2 and the curved surface. Each ball plunger 1 can independently adapt to local changes in the height of the curved surface. For example, when there is a height difference of ±2 mm in the panel, the compression stroke of the ball plunger 1 can keep the support frame 2 in a horizontal state, avoiding fiber lamination damage caused by rigid contact. This structure further allows the support frame 2 to undergo slight displacement with the deformation of the curved surface during processing. For example, when processing the R-corner area, the floating function of the ball plunger 1 can maintain a constant contact pressure between the grinding tool 9 and the curved surface.

[0064] The ball plunger 1 is selected for its dustproof capability and ability to function normally in environments with water and dust. It is also selected for its high-strength design, capable of withstanding its own weight and manual pressure. Manual pressure ≥300N will prevent the ball from sinking, and the bearing capacity of a single ball plunger 1 must be ≥75N. After installation, the ball plunger 1 is reliable and will not loosen or detach due to processing vibrations. It is interchangeable and can be replaced according to its lifespan. It is also positional, ensuring that the overhang of the four ball plungers 1 remains consistent after installation, with a height difference ≤±0.1mm.

[0065] The steps for this application are as follows:

[0066] Step 1: Loosen the positioning piece, rotate the main frame 7 around the pivot 11, visually align it to the required angle by checking the angle markings, and then tighten the positioning piece to fix the device angle.

[0067] Step 2: Adjust the height of the clamping seat 10 by adjusting the four second driving components 8, use the scribing lines for positioning, and achieve precise positioning and locking through the height adjustment unit and the clamping unit. The height adjustment range is from the lowest point to the highest point. The lowest point is when the bottom surface of the clamping seat 10 contacts the bottom surface of the inner cavity of the main frame 7, and the highest point is when the spring 6 is fully compressed.

[0068] Step 3: Place the device on the part surface, use the hand-held drive device to process the part according to the planned path, and use the grinding rod 13 to cut the part;

[0069] Step 4: After each layer is processed, measure the remaining height and adjust the height according to the measurement results until the remaining height is processed to the net size.

[0070] The beneficial technical effects achieved by the above-mentioned technical solution in this application are as follows: the clamping unit and the height adjustment unit significantly improve the processing performance through synergistic effect. The clamping unit adopts a composite design of slider 4 and elastic pad 5, and achieves stress-free clamping through the first driving component 3, effectively suppressing processing vibration while preventing direct contact between the metal part and the grinding tool 9. The height adjustment unit consists of a floating system composed of a second driving component 8 with four sets of screw structures and springs 6. When the screw is tightened, the spring 6 is compressed to raise the tool to the highest point, and when the screw is loosened, the spring 6 is released to lower the tool to the lowest point. Combined with the 0.2mm scale positioning and height limiting device, it achieves precise control of the grinding depth of ±0.1mm. This structure responds to changes in cutting force in real time through the floating mechanism of spring 6, eliminating the risk of overcutting caused by surface deformation. After height positioning, it is mechanically fixed by the limiting component, and the angle adjustment is provided by the H7 / k6 interference fit rotating shaft 11 and locked by the side top screw, ensuring stable processing at any angle within a 15° range. The four-screw uniform distribution design ensures even distribution of clamping force, while the elastic pad 5 achieves 100% tool protection. Combined with the height / angle synchronous adjustment mechanism, it reduces debugging time by 90%. Ultimately, the residual step height of the composite material vertical rib is stably controlled to ≤0.1mm, the yield rate is increased to over 98%, the overall processing efficiency is increased by 50%, and the equipment cost is reduced by 60%. This systematically solves the problems of precision loss control and damage risk in composite material processing.

[0071] Example 2: Based on Example 1 of the present invention:

[0072] See appendix Figure 5 -Appendix Figure 6 The support frame 2 has a support member, which includes: a base 15 connected to the support frame 2; a support 16 attached to the upper part of the base 15, having at least two rollers 17 configured to roll in contact with the rotating shaft 11; a shaft 18 passing through the base 15 and the support 16, configured to allow relative rotation between the base 15 and the support 16; and a constant pressure member 19 that supports the vibration transmitted to the support 16 through the rollers 17 in a constant pressure manner.

[0073] Two rollers 17 are spaced apart along the length of the support 16. The axis of the shaft 18 is parallel to the rotation axis of the rollers 17, and the shaft 18 is located at the midpoint of the center distance between the two rollers 17. The support 16 can be tilted at a first angle toward one side or the other side of the base 15 with the shaft 18 as a reference.

[0074] A gap is formed between the base 15 and the support 16, and the gap is spaced apart from the upper surface of the base 15 at a predetermined distance.

[0075] The upper surface of the base 15 has an insertion hole, and the constant pressure member 19 includes: a support rod 20, which is disposed on the lower surface of the support 16 and extends into the insertion hole; and an elastic member, which is disposed in the insertion hole and supports the support rod 20 outward.

[0076] The elastic element 21 is a helical spring that supports the support rod 20 with a predetermined pressure.

[0077] Support rods 20 are respectively installed on the left and right sides along the length of support 16.

[0078] During installation, the support is positioned below the rotating shaft 11, and the preload of the elastic element 21 on the support rod 20 causes the roller 17 on the support 16 to roll into contact with the lower part of the rotating shaft 11.

[0079] The roller 17 maintains a gapless contact with the rotating shaft 11 through the initial preload of the elastic element 21. When the cutting force changes instantaneously, the roller 17 can immediately sense it and generate a reverse compensation force through the elastic element 21 to suppress the angular drift of the support frame 2 around the rotating shaft 11, thereby reducing the overcutting of the vertical rib by the grinding tool 9 on one side.

[0080] Since the support frame 2 has an inner hole that allows the rotating shaft 11 to pass through, the surface of the roller 17 is made of silicone substrate and rolls in contact with the rotating shaft 11. Compared with the traditional sliding support, the coefficient of friction is reduced, which effectively reduces the wear between the rotating shaft 11 and the inner hole wall of the support frame 2, which is conducive to extending the life of the rotating shaft 11. At the same time, it reduces the cutting error of the vertical rib caused by the wear of the rotating shaft 11 during the milling process.

[0081] The structure of the above-mentioned support member can balance the bidirectional load through the constant pressure member. The specific principle is as follows: the symmetrically arranged constant pressure member 19 applies equal amplitude reverse preload to the roller 17 through the support rod 20 and the elastic member 21. When the grinding tool 9 cuts the vertical rib of the composite wall panel on one side, the contact between the grinding tool 9 and the material will generate a transverse cutting force. This cutting force will be transmitted through the main frame 7 to the connection between the support frame 2 and the rotating shaft 11, forming an original torque that attempts to make the support frame 2 rotate and tilt around the rotating shaft 11. At this time, the two rollers 17 transmit the pressure to the constant pressure component 19 behind them through the pre-tight rolling contact with the rotating shaft 11. Due to the original torque, the roller 17 on the one side of the force-bearing side increases the compression of the elastic component 21 on the corresponding side, and the roller 17 on the non-force-bearing side releases the elastic component 21 on the corresponding side with an equal amount of deformation, forming a dynamic couple, which cancels the cutting torque in real time, thereby ensuring the relative angle between the support frame 2 and the main frame 7. This is beneficial to improving the quality of the conformal processing of the composite material surface and reducing the problem of unilateral overcutting or uneven thickness of the vertical ribs of the composite wall panel due to angular deviation.

[0082] In summary, the mechanism design of the support component converts the cutting force into controllable elastic potential energy through the action shaft, and achieves dynamic stability of the machining process through the reverse balance of torque. This not only avoids the aggravated vibration caused by hard collisions of rigid structures, but also achieves stability of the machining process through elastic buffering.

[0083] The side-mounted screw 12 and roller 17 respectively achieve static angle locking and dynamic vibration compensation for the support frame 2 and the main frame 7. The static locking provides an execution reference for the dynamic compensation, while the dynamic compensation can protect the static locking from vibration interference. By achieving synergistic gain, they provide a reasonable solution for the precision milling of composite panels, solving the technical pain points of traditional milling devices such as large vibration, excessive overcutting, and short lifespan. This solution is particularly suitable for high-precision processing scenarios such as aerospace composites.

[0084] The base 15 has a receiving hole through which the shaft 18 passes, the receiving hole allows the shaft 18 to rotate axially, and the receiving hole is configured to allow the shaft 18 to move linearly in the vertical direction.

[0085] The receiving hole has arc surfaces at both ends and a vertical end face in the middle. The fit between the receiving hole and the shaft 18 allows the gap between the support 16 and the base 15 to be adjusted. During installation, the gap is reduced by pressing down the support 16, so that the rotating shaft 11 reaches above the roller 17 without contact. Then, the support 16 is released, and the roller 17 is pre-tightened and rolls in contact with the rotating shaft 11 under the rebound action of the elastic element 21, thus achieving connection and support.

[0086] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A kind of composite wallboard stud conformal floating adjustable milling device, it is characterized by comprising: Support frame (2); Main frame (7), rotationally connected to the support frame (2), with through hole; Polishing tool (9), through the through hole penetrates the main frame (7); Limiting piece, be in the main frame (7), for keeping the radial position of the polishing tool (9) relative to the through hole; Positioning member, configured to lock the angle of the main frame (7) relative to the support frame (2), The limiting piece includes: clamping seat (10), with the accommodating cavity matching the side of the polishing tool (9), so that the polishing tool (9) and the through hole form gap;Compression unit, configured to compress the polishing tool (9) in the accommodating cavity;Height adjustment unit, configured to drive the compression unit to move along the penetration direction of the polishing tool (9), The compression unit includes: sliding block (4), movably connected with the clamping seat (10);First driving member (3), threadedly connected with the clamping seat (10), for driving the sliding block (4) to abut against the side of the polishing tool (9), so that the polishing tool (9) is compressed in the accommodating cavity and the gap is kept.

2. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: Further comprising rotating shaft (11), the support frame (2) and the main frame (7) are connected by the rotating shaft (11), and the positioning member includes positioning top screw (12), the positioning top screw (12) is screwed on the side of the support frame (2), and the end thereof abuts against the side of the main frame (7) to fix the angle.

3. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: Height adjustment pad (14) is further provided between the bottom of the clamping seat (10) and the main frame (7).

4. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: The height adjustment unit includes: second driving member (8) and spring (6), the second driving member (8) is threadedly connected with the top of the main frame (7), the lower end of the second driving member (8) is threadedly connected with the clamping seat (10), and the spring (6) is sleeved on the second driving member (8) and abuts against the main frame (7) and the clamping seat (10) at both ends.

5. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: Height adjustment pad (14) is further provided between the bottom of the clamping seat (10) and the main frame (7).

6. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: The main frame (7) rotates relative to the support frame (2) around rotation axis A, and the height adjustment unit drives the compression unit to displace along movement axis B;Wherein, the rotation axis A and the movement axis B are perpendicular to each other in space, and the perpendicular relationship of the two is independent of the state of axis intersection.

7. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: The side surface of the main frame (7) is provided with a scale disc, and the scale disc is used to indicate the rotation angle of the main frame (7) relative to the support frame (2).

8. A profiled floating adjustable milling device for a stud of a composite wall panel according to claim 1, characterized in that: The lower surface of the support frame (2) is further connected with a ball plunger (1).

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