A milling tool and method for composite hat-shaped reinforced wall panels

Abstract

The present invention relates to a milling tool for composite hat-shaped reinforced wall panels, comprising a card plate, a template, a support portion and an adsorption mold body; wherein the card plate is mounted on the support portion and is used to mark the dimensions of the hat-shaped ribs and the skin of the composite hat-shaped reinforced wall panels, the template is connected to the card plate and is used to mark the dimensions of the skin, and the adsorption mold body is mounted on the support portion and is used to install and adsorb the hat-shaped reinforced wall panels. The present invention also relates to a milling method for composite hat-shaped reinforced wall panels. The purpose of the milling tool and milling method for composite hat-shaped reinforced wall panels is to solve the problem of excessive reliance on drilling template holes and CNC machine tool drawing in the precise processing of composite hat-shaped reinforced wall panel parts.

Description

Technical Field

[0001] The invention relates to the technical field of composite material processing, and in particular to a milling tool and method for composite material hat-shaped reinforced wall panels. Background Art

[0002] Resin-based composite materials have been widely used in the aviation field. With the continuous improvement of aircraft maneuverability and stealth, composite materials have gradually tended to be manufactured in an integrated and high-precision manner for complex structures. The stitching and gluing of various composite ribs and long spars with skins have basically replaced the traditional screw connection method, which puts higher requirements on the position accuracy of ribs, long spars and skins. At present, composite reinforced wall panels generally use a drilling template to drill reference holes on the parts, and use this reference hole as the processing reference to draw lines and process the composite parts as a whole.

[0003] The existing technology has high requirements for the position accuracy of the drill template holes, and also has high requirements for the relative position accuracy of the drill template holes and other positioning components of the mold. However, in the mass production of composite parts, since the molding tooling is frequently used under high temperature and high pressure, the positioning components of various ribs and long stringers are prone to deformation or offset, resulting in a gradual large deviation between the drill template holes and their relative positions. During the use of the drill template itself, the hole position accuracy is prone to deviation due to wear and other reasons. These deviations are not easy to detect, and will eventually cause the processed reinforced wall panels to interfere with metal parts during assembly, or gaps and interference with other components of the fuselage, etc., affecting the stealth performance of the aircraft and even causing the product to be scrapped. Frequent maintenance of such tooling generates high maintenance costs and seriously affects production progress.

[0004] Therefore, the inventor provides a milling tool and method for composite hat-shaped stiffened wall panels. Summary of the invention

[0005] (1) Technical issues to be solved

[0006] The embodiment of the present invention provides a milling tool and method for composite hat-shaped reinforced wall panels, which solves the technical problem that the precise processing of composite hat-shaped reinforced wall panel parts depends too much on drilling template holes and drawing lines on CNC machines.

[0007] (2) Technical solution

[0008] The present invention provides a milling tool for composite hat-shaped reinforced wall panels, comprising a clamping plate, a sample plate, a support portion and an adsorption mold body; wherein:

[0009] The cardboard is installed on the supporting part and is used to mark the sizes of the hat-shaped ribs and skin of the composite hat-shaped stiffened wall panel. The template is connected to the cardboard and is used to mark the sizes of the skin. The adsorption mold is installed on the supporting part and is used to install and adsorb the hat-shaped stiffened wall panel.

[0010] Furthermore, the clamping plate is distributed at the fracture of the hat-shaped rib and the position where the hat-shaped rib has an assembly relationship; the first profile of the clamping plate is adapted to the theoretical outer profile of the hat-shaped rib and has a reserved gap, the second profile of the clamping plate is flush with the theoretical flange boundary of the hat-shaped rib, the third profile of the clamping plate is flush with the theoretical end profile of the hat-shaped rib, and the fourth profile of the clamping plate is flush with the profiles on both sides of the skin.

[0011] Furthermore, the template is distributed at the positions of the serrations or other complex structures of the skin; the first profile of the template is adapted to the serration end profile of the skin and offset to the margin area of ​​the serration end profile, the second profile of the template has a reserved gap with the upper profile of the skin, and the third profile of the template is connected to the fifth profile of the clamping plate.

[0012] Furthermore, the adsorption mold body includes a mold body, a sealing groove, a sealing strip, an air guide groove, an air guide nozzle and an air guide pipeline, the sealing groove is opened at the circumferential edge of the upper end surface of the mold body, and the sealing strip is arranged in the sealing groove;

[0013] The air guide grooves are distributed in a mesh form on the upper end surface of the mold body and are used to adsorb the composite hat-shaped stiffened wall panel under vacuum negative pressure. The air guide nozzle is arranged on one side of the mold body and is connected to the air guide grooves through the air guide pipeline.

[0014] Furthermore, the upper end surface of the mold body is adapted to the bottom profile of the skin and is used to fit with the bottom profile.

[0015] Furthermore, the support portion includes a support frame and a support plane, the support plane is arranged on the upper end surface of the support frame, and the clamping plate and the adsorption mold body are both installed on the support plane.

[0016] Furthermore, a reference hole serving as a reference for numerical control machining is provided on the upper end surface of the support plane.

[0017] Furthermore, the milling tool for composite hat-shaped stiffened wall panels also includes a positioning seat, and the clamping plate is installed on the supporting plane through the positioning seat, and the fifth profile of the clamping plate is in contact with the profile of the positioning seat.

[0018] Furthermore, the clamping plate is positioned on the positioning seat by bolts.

[0019] The present invention also provides a milling method for a composite hat-shaped reinforced wall panel, comprising the following steps:

[0020] Placing the composite hat-shaped stiffened wall panel on the adsorption mold, ensuring that the adsorption mold and the sample are within the skin contour of the composite hat-shaped stiffened wall panel, and ensuring that the clamping plates are distributed at the fracture of the hat-shaped rib of the composite hat-shaped stiffened wall panel and the position where the hat-shaped rib exists in an assembly relationship;

[0021] The composite hat-shaped reinforced wall panel is firmly attached to the adsorption mold under vacuum negative pressure and the boundary lines of the hat-shaped reinforcement and the skin are drawn;

[0022] Taking the boundary line of the hat-shaped rib and the skin as a reference, manual cutting or CNC machining is performed according to the shape accuracy tolerance requirements of the composite hat-shaped reinforced wall panel.

[0023] (3) Beneficial effects

[0024] In summary, the present invention can directly determine the corresponding relationship between the axis and size of the hat-shaped rib and the outer dimensions of the skin, ensuring that the processed parts fully meet the assembly requirements and avoiding the risk of assembly out-of-tolerance. The milling tool can also be used as a gauge to perform offline inspections on the outer shape accuracy of parts that are hand-cut or stored for a long time, and provide surface deviations of various parts of the composite hat-shaped reinforced wall panels. When processing the overall structure of the composite hat-shaped reinforced wall panels, it is possible to quickly and accurately draw the contour lines of the parts without using CNC machine tools to draw lines, saving costs and improving efficiency; it avoids the high dependence on reference holes during the fine processing of the outer shape of the composite hat-shaped reinforced wall panels, reduces the accuracy requirements for the jig holes during the manufacturing of the molding tool, and even eliminates the jig hole assembly of the molding tool, reducing the manufacturing and maintenance costs of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of a composite hat-shaped reinforced wall panel to be processed;

[0027] Figure 2 It is a structural schematic diagram of a milling tool for composite hat-shaped reinforced wall panels provided by an embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of assembling the milling tool and the wall panel to be processed provided by an embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the position relationship between the clamping plate of the milling tool provided by the embodiment of the present invention and the wall panel to be processed;

[0030] Figure 5 It is another schematic diagram of the positional relationship between the clamping plate of the milling tool provided by the embodiment of the present invention and the wall panel to be processed;

[0031] Figure 6 It is another schematic diagram of the position relationship between the clamping plate of the milling tool provided by the embodiment of the present invention and the wall panel to be processed;

[0032] Figure 7 It is a structural schematic diagram of a clamping plate of a milling tool provided in an embodiment of the present invention;

[0033] Figure 8 It is a schematic diagram of the positional relationship between the positioning seat, the clamping plate, the template and the wall panel to be processed of the milling tool provided by the embodiment of the present invention;

[0034] Fig. 9 It is a schematic diagram of the positional relationship between the adsorption mold body of the milling tooling provided by an embodiment of the present invention and the wall panel to be processed.

[0035] In the figure:

[0036] 1. Composite hat-shaped reinforced wall panel; 2. Milling tool; 3. Hat-shaped rib; 3-a. Actual outer profile; 3-b. Theoretical flange boundary; 3-c. Theoretical end profile; 4. Skin; 4-a. Two-side profile; 4-b. Upper profile; 4-c. Bottom profile; 4-d. Sawtooth end profile; 5. Pallet; 5-a. First profile of pallet; 5-b. Second profile of pallet; 5-c. Third profile of pallet; 5-d. The fourth profile of the pallet; 5-e, the fifth profile of the pallet; 6, the template; 6-a, the first profile of the template; 6-b, the second profile of the template; 6-c, the third profile of the template; 7, the support frame; 8, the support plane; 9, the adsorption mold; 10, the positioning seat; 10-a, the positioning seat profile; 11, the reference hole; 12, the bolt; 13, the sealing groove; 14, the sealing strip; 15, the air guide groove; 16, the air guide nozzle; 17, the air guide pipeline. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments, and covers any modification, replacement and improvement of parts, components and connection modes without departing from the spirit of the present invention.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Figure 2 The present invention provides a milling tool for composite hat-shaped reinforced wall panels, such as Figure 2-3 As shown, it includes a card plate 5, a template 6, a support portion and an adsorption mold 9; wherein the card plate 5 is installed on the support portion and is used to mark the sizes of the hat-shaped ribs 3 and the skin 4 of the composite hat-shaped stiffened wall panel 1, the template 6 is connected to the card plate 5 and is used to mark the sizes of the skin 4, and the adsorption mold 9 is installed on the support portion and is used to install and adsorb the hat-shaped stiffened wall panel.

[0040] In the above embodiment, the milling tool 2 is designed according to the structural characteristics and assembly relationship of the composite hat-shaped stiffened wall panel 1, and the milling tool 2 is composed of a support frame 7, a support plane 8, an adsorption mold 9 positioning seat 10, a clamping plate 5 and a template 6.

[0041] The milling tool can directly determine the corresponding relationship between the axis and size of the hat-shaped rib and the outer dimensions of the skin, ensuring that the processed parts fully meet the assembly requirements and avoiding the risk of assembly out-of-tolerance. The milling tool can also be used as a gauge to perform offline inspections on the outer shape accuracy of parts that are hand-cut or stored for a long time, and provide the surface deviations of various parts of the composite hat-shaped reinforced wall panels. When processing the overall structure of the composite hat-shaped reinforced wall panels, it is possible to quickly and accurately draw the contour lines of the parts without using CNC machine tools to draw lines, saving costs and improving efficiency; it avoids the high dependence on reference holes during the fine processing of the outer shape of the composite hat-shaped reinforced wall panels, reduces the accuracy requirements for the jig holes during the manufacturing of the forming tool, and can even cancel the jig hole components of the forming tool, reducing the tool manufacturing and maintenance costs.

[0042] As an optional embodiment, the clamp 5 is distributed at the fracture of the hat-shaped rib 3 and the position where the hat-shaped rib 3 has an assembly relationship; the first profile 5-a of the clamp is adapted to the theoretical outer profile 3-a of the hat-shaped rib 3 and has a reserved gap, the second profile 5-b of the clamp is flush with the theoretical flange boundary 3-b of the hat-shaped rib 3, the third profile 5-c of the clamp is flush with the theoretical end profile 3-c of the hat-shaped rib 3, and the fourth profile 5-d of the clamp is flush with the two side profiles 4-a of the skin 4.

[0043] Specifically, Figure 4-7As shown, the clamping plate 5 is distributed at the fracture of the hat-shaped rib 3 and the position where the hat-shaped rib 3 has an assembly relationship. The profile 5-a of the clamping plate 5 is designed based on the theoretical outer profile 3-a of the hat-shaped rib 3, and a 1mm to 2mm gap is reserved with the theoretical outer profile 3-a of the hat-shaped rib 3; the profile 5-b of the clamping plate 5 is designed based on the theoretical flange boundary 3-b of the hat-shaped rib 3; the profile 5-c of the clamping plate 5 is designed based on the theoretical end profile 3-c of the hat-shaped rib 3; the profile 5-d of the clamping plate 5 is designed based on the profiles 4-a on both sides of the skin 4; the profile 5-e of the clamping plate 5 is in contact with the profile 10-a of the positioning seat 10, and is positioned on the positioning seat 10 by bolts 12.

[0044] Among them, the profile 5-b of the clamping plate 5 is designed according to the theoretical flange boundary 3-b of the cap-shaped rib 3. When the profile 5-b is designed to be flush with the theoretical flange boundary 3-b, the profile 5-b is used as the basis for drawing the net edge. When the profile 5-b is designed to be offset by 1mm to 3mm toward the margin area compared with the theoretical flange boundary 3-b, the profile 5-b is used as the basis for drawing the manual rough cutting.

[0045] The profile 5-c of the pallet 5 is designed based on the theoretical end profile 3-c of the cap-shaped rib 3. When the profile 5-c is designed to be flush with the theoretical end profile 3-c, the profile 5-c is used as the basis for drawing the net edge. When the profile 5-c is designed to be offset by 1mm to 3mm toward the margin area compared to the theoretical end profile 3-c, the profile 5-c is used as the basis for drawing the manual rough cutting.

[0046] The profile 5-d of the pallet 5 is designed based on the profiles 4-a on both sides of the skin 4. When the profile 5-d is designed to be flush with the profiles 4-a on both sides, the profile 5-d is used as the basis for drawing the net edge. When the profile 5-d is designed to be offset 1mm to 3mm toward the margin area compared to the profiles 4-a on both sides, the profile 5-d is used as the basis for drawing the manual rough cutting.

[0047] As an optional embodiment, the template 6 is distributed at the position of the serrations or other complex structures of the skin 4; the first profile 6-a of the template is adapted to the serration end profile 4-d of the skin 4 and offset to the margin area of ​​the serration end profile 4-d, the second profile 6-b of the template and the upper profile 4-b of the skin 4 have a reserved gap, and the third profile 6-c of the template is connected to the fifth profile 5-e of the clamp.

[0048] Specifically, Figure 8 As shown, the template 6 is distributed at the position of the serrations or other complex structures of the skin 4, and the one side profile 6-a of the template 6 is designed according to the end profile 4-d of the serrations or other complex structures of the skin 4; the bottom side profile 6-b of the template 6 is designed according to the upper profile 4-b of the corresponding serrations or other complex structures of the skin 4, and according to the thickness deviation of the skin, a gap of 0.1mm to 2mm is reserved between the bottom side profile 6-b and the upper profile 4-b; the other side profile 6-c of the template 6 is in contact with the profile 5-e of the clamping plate 5, and is positioned on the clamping plate 5 by bolts 12.

[0049] Among them, one side profile 6-a of the template 6 is designed according to the end profile 4-d of the serrations or other complex structures of the skin 4. When one side profile 6-a is designed to be flush with the end profile 4-d, one side profile 6-a is used as the basis for drawing the net edge. When one side profile 6-a is designed to be offset by 1mm to 3mm toward the margin area compared to the end profile 4-d, one side profile 6-a is used as the basis for drawing the manual rough cutting.

[0050] As an optional embodiment, the adsorption mold 9 includes a mold body, a sealing groove 13, a sealing strip 14, an air guide groove 15, an air guide nozzle 16 and an air guide pipe 17. The sealing groove 13 is opened at the circumferential edge of the upper end surface of the mold body, and the sealing strip 14 is arranged in the sealing groove 13; the air guide grooves 15 are distributed in a mesh form on the upper end surface of the mold body and are used to adsorb the composite material hat-shaped stiffened wall panel 1 under vacuum negative pressure. The air guide nozzle 16 is arranged on one side of the mold body and is connected to the air guide groove 15 through the air guide pipe 17.

[0051] Specifically, Figure 2 , 9 As shown, the upper profile of the adsorption mold body 9 is designed according to the bottom profile 4-c of the skin 4, and fits with the bottom profile 4-c of the skin 4; the outer dimensions of the adsorption mold body 9 are 0.5mm to 2.0mm smaller than the theoretical outer dimensions of the skin 4; a sealing groove 13 is arranged around the upper profile of the adsorption mold body 9, the width of which is generally 4mm to 8mm, and the depth is 0.5mm to 1.0mm less than the width; a sealing strip 14 is placed inside the sealing groove 13, the dimension of the sealing strip 14 in the width direction is consistent with that of the sealing groove 13, and the dimension in the depth direction is 0.5mm to 1.0mm larger than that of the sealing groove 13; a mesh-distributed air guide groove 15 is arranged on the profile of the adsorption mold body 9 within the sealing groove 13, and the width of which is generally 4mm to 10mm; an air guide nozzle 16 is arranged on one side of the adsorption mold body 9, and the air guide nozzle 16 is connected to the air guide groove 15 through an internal air guide pipe 17, so that the area of ​​the adsorption mold body 9 except the air guide system is ensured to be sealed.

[0052] The mesh-shaped air guide grooves 15 can improve the adsorption force of the entire adsorption mold body 9 on the wall panel to be processed, thereby preventing the wall panel from undergoing phase movement during the processing.

[0053] As an optional implementation, the support portion includes a support frame 7 and a support plane 8 , the support plane 8 is arranged on the upper end surface of the support frame 7 , and the clamping plate 5 and the adsorption mold body 9 are both installed on the support plane 8 .

[0054] Specifically, the support plane 8 is fixed on the support frame 7 by welding, and a reference hole 11 is provided on the support plane 8 as a reference for numerical control machining.

[0055] As an optional embodiment, the milling tool for composite hat-shaped stiffened wall panels also includes a positioning seat 10, and the clamping plate 5 is installed on the supporting plane 8 through the positioning seat 10, and the fifth profile 5-e of the clamping plate is in contact with the profile 10-a of the positioning seat.

[0056] Specifically, the positioning seat 10 is positioned by pins and fixed on the supporting plane 8 by screw connection or welding.

[0057] Figure 2 1 is a flow chart of a milling method of a composite hat-shaped stiffened wall panel provided by an embodiment of the present invention. The method may include the following steps:

[0058] S100, placing the composite hat-shaped reinforced wall panel 1 on the adsorption mold 9, ensuring that the adsorption mold 9 and the sample 6 are within the contour of the skin 4 of the composite hat-shaped reinforced wall panel 1, and ensuring that the clamping plate 5 is distributed at the fracture of the hat-shaped rib 3 of the composite hat-shaped reinforced wall panel 1 and the position where the hat-shaped rib 3 has an assembly relationship;

[0059] S200, firmly attaching the composite hat-shaped reinforced wall panel 1 to the adsorption mold 9 under vacuum negative pressure and drawing the boundary lines of the hat-shaped reinforcement 3 and the skin 4;

[0060] S300, taking the boundary line of the hat-shaped rib 3 and the skin 4 as a reference, and performing manual cutting or CNC machining according to the shape accuracy tolerance requirement of the composite hat-shaped reinforced wall panel 1.

[0061] In the above embodiment, in step S200, the air guide nozzle 16 is connected to the vacuum system, and the blank of the composite hat-shaped stiffened wall panel 1 is firmly attached to the adsorption mold 9 under vacuum negative pressure; a drawing needle is used to draw a theoretical flange boundary 3-b line on the hat-shaped rib 3 blank according to the profile 5-b of the clamping plate 5; a drawing needle is used to draw a theoretical end profile 3-c boundary line on the hat-shaped rib 3 blank according to the profile 5-c of the clamping plate 5; a drawing needle is used to draw the boundary lines of the profiles 4-a on both sides of the skin 4 at the corresponding positions according to the profile 5-d of the clamping plate 5; a drawing needle is used to draw the boundary lines of the end profiles 4-d of the serrations or other complex structures of the skin 4 at the corresponding positions according to the profile 6-a on one side of the template 6.

[0062] In step S300, when the shape accuracy tolerance is required to be less than ±1mm, manual rough cutting is performed in the margin area based on the scribe mark, and generally 1mm to 3mm of fine machining margin is reserved, and then fine machining is performed based on the reference hole 11 as the reference for CNC machining;

[0063] When the shape accuracy tolerance is required to be greater than or equal to ±1mm, manual processing is directly carried out based on the line mark.

[0064] Example 1

[0065] Take the hat-shaped reinforced wall panel with a size of 4000mm×500mm as an example. Figure 1 As shown. Two hat-shaped ribs are located in the middle of the skin and are integrally formed with the skin by stitching. The width of the hat-shaped rib flange is 25mm, and the distance from the edge of the skin is 30mm to 35mm. The height of the hat-shaped rib is 60mm. The deviation range of the axis of the hat-shaped reinforced wall panel rib is required to be -1mm to +1mm, the deviation range of the hat-shaped rib end position is required to be -0.5mm to +0.5mm, the deviation range of the hat-shaped rib flange width is required to be -1mm to +1mm, and the deviation range of the skin peripheral size is required to be -0.5mm to +0.5mm. The high-precision rapid milling method for hat-shaped reinforced wall panels of the present invention is now used to process the product, and the specific steps are as follows:

[0066] (a) According to the structural characteristics and assembly relationship of the composite hat-shaped reinforced wall panel 1, the milling tool 2 is designed. The milling tool 2 consists of a support frame 7, a support plane 8, an adsorption mold 9, a positioning seat 10, a clamping plate 5 and a template 6.

[0067] a1. The support plane 8 is fixed to the support frame 7 by welding, and a reference hole 11 is provided on the support plane 8 as a reference for CNC machining.

[0068] a2. The positioning seat 10 is positioned by pins and fixed to the supporting plane 8 by screw connection.

[0069] a3. The clamping plate 5 is distributed at both ends of the hat-shaped rib 3. The clamping plate 5 profile 5-a is designed according to the theoretical outer profile 3-a of the hat-shaped rib 3, and a 2mm gap is reserved with the theoretical outer profile 3-a of the hat-shaped rib 3; the clamping plate 5 profile 5-b is designed according to the theoretical flange boundary 3-b of the hat-shaped rib 3, and is flush with the theoretical flange boundary 3-b; the clamping plate 5 profile 5-c is designed according to the theoretical end profile 3-c of the hat-shaped rib 3, and is flush with the theoretical end profile 3-c; the clamping plate 5 profile 5-d is designed according to the profiles 4-a on both sides of the skin 4, and is offset 3mm to the margin area compared with the profiles 4-a on both sides of the skin 4; the clamping plate 5 profile 5-e is in contact with the profile 10-a of the positioning seat 10, and is positioned on the positioning seat 10 by the delicate bolts 12.

[0070] a4. The template 6 is distributed in the serrated area at both ends of the skin 4. The profile 6-a on one side of the template 6 is designed according to the profile 4-d at the serrated end of the skin 4, and is offset 3mm toward the margin area compared with the profile 4-d at the serrated end; the bottom profile 6-b of the template 6 is designed according to the upper profile 4-b of the corresponding skin 4 serration or other complex structure, and a gap of 1mm is reserved between the bottom profile 6-b and the upper profile 4-b; the profile 6-c on the other side of the template 6 is fitted with the profile 5-e of the clamping plate 5, and is positioned on the clamping plate 5 by the delicate bolts 12.

[0071] a5. The upper profile of the adsorption mold 9 is designed according to the bottom profile 4-c of the skin 4, and fits with the bottom profile 4-c of the skin 4; the outer dimensions of the adsorption mold 9 are 1mm smaller than the theoretical outer dimensions of the skin 4; a sealing groove 13 is arranged around the upper profile of the adsorption mold 9, with a width of 4mm and a depth of 3.5mm; a sealing strip 14 is placed inside the sealing groove, and the dimensions of the sealing strip in the width and depth directions are both 4mm; a mesh-distributed air guide groove 15 with a width of 10mm is arranged on the profile of the adsorption mold 9 within the sealing groove 13; an air guide nozzle 16 is arranged on one side of the adsorption mold 9, and the air guide nozzle 16 is connected to the air guide groove 15 through an internal air guide pipe 17, so that the area of ​​the adsorption mold 9 except the air guide system is guaranteed to be sealed.

[0072] (b) Place the blank of the composite hat-shaped stiffened wall panel 1 on the milling tool 2, ensure that the adsorption mold 9 and the one side surface 6-a of the template 6 are within the contour of the blank skin 4 of the composite hat-shaped stiffened wall panel 1, and the actual outer surface 3-a of the hat-shaped rib 3 is within the surface 5-a of the clamping plate 5, use a feeler gauge to adjust the gap between the actual outer surface 3-a of each hat-shaped rib 3 and the surface 5-a of the clamping plate 5, and ensure that the gap is greater than or equal to 1 mm.

[0073] (c). Connect the air guide nozzle 16 to the vacuum system, and the blank of the composite hat-shaped reinforced wall panel 1 is firmly attached to the adsorption mold 9 under vacuum negative pressure; use a drawing needle to draw the theoretical flange boundary 3-b line on the hat-shaped rib 3 blank according to the profile 5-b of the clamping plate 5; use a drawing needle to draw the theoretical end profile 3-c boundary line on the hat-shaped rib 3 blank according to the profile 5-c of the clamping plate 5; use a drawing needle to draw the 3mm margin line of the profile 4-a on both sides of the skin 4 at the corresponding position according to the profile 5-d of the clamping plate 5; use a drawing needle to draw the 3mm margin line of the serrated end profile 4-d of the skin 4 at the corresponding position according to the profile 6-a of one side of the template 6.

[0074] (d) Based on the marking mark, perform manual rough cutting in the allowance area, reserve 1mm of finishing allowance in the hat-shaped rib processing area, and reserve 3mm of finishing allowance in the skin edge area. Then, use the reference hole 11 as the reference for CNC processing and perform fine processing.

[0075] The peripheral dimensions of the hat-shaped reinforced wall panel processed according to the above method meet the tolerance requirements of -0.5mm to +0.5mm, the axis of the hat-shaped rib meets the tolerance requirements of -1mm to +1mm, the position of the hat-shaped rib end meets the tolerance requirements of -0.5mm to +0.5mm, and the width of the hat-shaped rib flange meets the tolerance requirements of -1mm to +1mm. There is no interference phenomenon during assembly of the parts, which meets the assembly requirements.

[0076] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the figures. In addition, for the sake of brevity, a detailed description of known methods and technologies is omitted here.

[0077] The above are only embodiments of the present application and are not limited to the present application. For those skilled in the art, the present application may have various changes and variations without departing from the scope of the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A milling tool for composite hat-shaped reinforced wall panels, characterized in that: It comprises a card board (5), a sample board (6), a support part and an adsorption mold body (9); wherein: The cardboard (5) is mounted on the support portion and is used to mark the dimensions of the hat-shaped ribs (3) and the skin (4) of the composite hat-shaped reinforced wall panel (1); the template (6) is connected to the cardboard (5) and is used to mark the dimensions of the skin (4); the adsorption mold (9) is mounted on the support portion and is used to install and adsorb the hat-shaped reinforced wall panel; The clamping plate (5) is distributed at the fracture of the hat-shaped rib (3) and the position where the hat-shaped rib (3) has an assembly relationship; the first profile (5-a) of the clamping plate is compatible with the theoretical outer profile (3-a) of the hat-shaped rib (3) and has a reserved gap, the second profile (5-b) of the clamping plate is flush with the theoretical flange boundary (3-b) of the hat-shaped rib (3), the third profile (5-c) of the clamping plate is flush with the theoretical end profile (3-c) of the hat-shaped rib (3), and the fourth profile (5-d) of the clamping plate is flush with the two side profiles (4-a) of the skin (4).

2. The milling tool for composite hat-shaped reinforced wall panels according to claim 1, characterized in that: The template (6) is distributed at the position of the serrations or other complex structures of the skin (4); the first profile (6-a) of the template is adapted to the serration end profile (4-d) of the skin (4) and is offset to the margin area of ​​the serration end profile (4-d); the second profile (6-b) of the template and the upper profile (4-b) of the skin (4) have a reserved gap; the third profile (6-c) of the template is connected to the fifth profile (5-e) of the cardboard.

3. The milling tool for composite hat-shaped reinforced wall panels according to claim 1, characterized in that: The adsorption mold body (9) comprises a mold body, a sealing groove (13), a sealing strip (14), an air guide groove (15), an air guide nozzle (16) and an air guide pipeline (17); the sealing groove (13) is provided at the circumferential edge of the upper end surface of the mold body, and the sealing strip (14) is provided in the sealing groove (13); The air guide grooves (15) are distributed in a mesh form on the upper end surface of the mold body and are used to adsorb the composite hat-shaped stiffened wall panel (1) under vacuum negative pressure. The air guide nozzle (16) is arranged on one side of the mold body and is connected to the air guide grooves (15) through the air guide pipeline (17).

4. The milling tool for composite hat-shaped reinforced wall panels according to claim 3, characterized in that: The upper end surface of the mold body is adapted to the bottom profile (4-c) of the skin (4) and is used to fit with the bottom profile (4-c).

5. The milling tool for composite hat-shaped reinforced wall panels according to claim 1, characterized in that: The support portion comprises a support frame (7) and a support plane (8); the support plane (8) is arranged on the upper end surface of the support frame (7); and the card plate (5) and the adsorption mold body (9) are both installed on the support plane (8).

6. The milling tool for composite hat-shaped reinforced wall panels according to claim 5, characterized in that: The upper end surface of the support plane (8) is provided with a reference hole (11) used as a reference for numerical control machining.

7. The milling tool for composite hat-shaped reinforced wall panels according to claim 5, characterized in that: It also comprises a positioning seat (10), the clamping plate (5) is installed on the supporting plane (8) via the positioning seat (10), and the fifth profile (5-e) of the clamping plate is in contact with the profile (10-a) of the positioning seat.

8. The milling tool for composite hat-shaped reinforced wall panels according to claim 7, characterized in that: The clamping plate (5) is positioned on the positioning seat (10) by means of bolts (12).

9. A milling method using the milling tool for composite hat-shaped stiffened wall panels according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: The composite hat-shaped stiffened wall panel (1) is placed on an adsorption mold (9), ensuring that the adsorption mold (9) and the sample (6) are within the contour of the skin (4) of the composite hat-shaped stiffened wall panel (1), and ensuring that the clamping plate (5) is distributed at the fracture of the hat-shaped rib (3) of the composite hat-shaped stiffened wall panel (1) and at the position where the hat-shaped rib (3) has an assembly relationship; The composite hat-shaped reinforced wall panel (1) is firmly attached to the adsorption mold (9) under vacuum negative pressure and the boundary lines of the hat-shaped reinforcement (3) and the skin (4) are drawn; Taking the boundary lines of the hat-shaped rib (3) and the skin (4) as references, manual cutting or CNC machining is performed according to the shape accuracy tolerance requirements of the composite hat-shaped reinforced wall panel (1).

Images