CN114178785B - Method for processing brim-shaped curved wall plate part - Google Patents

Method for processing brim-shaped curved wall plate part Download PDF

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CN114178785B
CN114178785B CN202111390642.3A CN202111390642A CN114178785B CN 114178785 B CN114178785 B CN 114178785B CN 202111390642 A CN202111390642 A CN 202111390642A CN 114178785 B CN114178785 B CN 114178785B
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brim
wall plate
curved
shaped curved
curved wall
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CN114178785A (en
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徐�明
姚俊
陆建春
周造文
谢云龙
刘彤
吴炎发
温建林
危震坤
刘朝训
方瑞
刘世安
江媛
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Nanchang Huhang Industry Co ltd
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Nanchang Huhang Industry Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

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Abstract

The invention discloses a method for processing a brim-shaped curved wall plate part, wherein the brim-shaped curved wall plate consists of a curved surface and a circle of plane flange which is added at the edge of the curved surface and forms a variable inclination angle with the curved surface; the processing process of the brim-shaped curved wall plate is as follows: roughly machining a concave surface and a convex surface, and manufacturing a coarse hole of a reference hole; naturally aging; milling a datum plane and a machining datum; finely machining the concave surface; the deformation adjusting device adjusts the opening size of the concave surface to a theoretical size to meet the tolerance requirement; then clamping the part by using a curved surface vacuum adsorption milling machine fixture, and realizing the rapid positioning of the brim-shaped curved surface wall plate in the length and width directions through 3 positioning pins and reference holes; and finally, finishing the convex surface. The invention adopts the deformation adjusting device, better solves the problem of local deformation of parts and ensures the reference coincidence of the processed concave surface and the processed convex surface; and the problems of uneven wall thickness and processing tremble of the curved web can be better solved through the curved surface vacuum adsorption milling machine fixture.

Description

Method for processing brim-shaped curved wall plate part
Technical Field
The invention belongs to the technical field of machining, and relates to a method for machining a brim-shaped curved wall plate part.
Background
The structure of the brim-shaped curved wall panel is formed by adding a circle of plane flanges which form variable inclination angles with the curved surface on the edge of the curved surface on the basis of the conventional curved wall panel. The flatness of the plane flange and the profile of the curved surface of the plane flange are high in requirement, and the flatness and the profile of the surface are required to be controlled within 0.3 mm. The traditional manufacturing process of the brim curved-surface wall plate adopts a manufacturing method of welding ribs after sheet metal forming, and the structural member of the brim curved-surface wall plate is unstable due to the influence of forming errors and welding deformation, so that the product quality is difficult to guarantee.
The brim-shaped curved surface wallboard part is changed into an integral structural member, the numerical control machining technology is adopted for machining, the sheet metal part is changed into the numerical control structural member, and compared with a typical wallboard structural member, the brim-shaped curved surface wallboard has the characteristics of small curvature, thin wall, variable thickness of a curved surface and easy deformation in machining, and has no positioning reference and larger machining difficulty. The processing difficulty of the cap brim-shaped curved wall panel part is as follows: (1) the concave surface is composed of a plane and a curved surface, no reinforcing rib is arranged, the plane is easy to deform after processing, the curved surface profile of a part is easy to be out of tolerance, and the convex surface processing datum is difficult to align. (2) The requirement on the wall thickness precision is high, and the convex surface is processed by a variable thickness curved surface and is difficult to meet the requirement on the wall thickness precision. (3) After the parts are finished, the peripheral plane flanges of the parts are warped and twisted, and the flatness requirement of 0.3mm cannot be met. Therefore, a corresponding machining process needs to be designed for the type of part.
Disclosure of Invention
In order to overcome the difficulty of accurate manufacturing of the brim-shaped curved surface wallboard part, the invention provides a method for processing the brim-shaped curved surface wallboard part, which forms a processing solution and ensures the product quality by designing a deformation adjusting device and a curved surface vacuum adsorption milling machine clamp.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for processing a brim-shaped curved wall plate part comprises the steps that the brim-shaped curved wall plate consists of a curved surface and a circle of plane flanges which are added at the edges of the curved surface and form variable inclination angles with the curved surface, the front end of the brim-shaped curved wall plate is a visor, the rear end of the brim-shaped curved wall plate is a notch, the edges of the rear end of the curved surface and the lower end of the curved surface are both provided with the plane flanges, the outer surface of the brim-shaped curved wall plate is a convex surface, and the inner surface of the brim-shaped curved wall plate is a concave surface; the rib is arranged on the convex surface and comprises a plurality of transverse ribs transversely arranged along the convex surface and a plurality of longitudinal ribs longitudinally arranged; the processing of the brim-shaped curved wall plate comprises the following specific steps:
step 1, rough machining: roughly machining the concave surface and the convex surface, manufacturing a reference hole rough hole, and reserving the allowance for 2-4 mm after rough machining;
step 2, natural aging;
step 3, milling a datum plane and processing the datum: milling a reference surface in a free state, wherein the reference surface is the bottom surface of the brim-shaped curved wall plate; milling reference holes, namely milling 2 reference holes in the length direction of a rough blank of the brim-shaped curved-surface wall plate, wherein 1 reference hole is positioned at the end part of the visor of the rough blank of the brim-shaped curved-surface wall plate, the other 1 reference hole is positioned at the center of the top of the opening of the rough blank of the brim-shaped curved-surface wall plate, milling 1 reference hole in the width direction of the brim-shaped curved-surface wall plate, and the reference holes are positioned on one side of the waist part of the brim-shaped curved-surface wall plate and are 3 reference holes in total;
step 4, finish machining the concave surface;
step 5, convex surface clamping and positioning: the deformation adjusting device adjusts the opening size of the concave surface to a theoretical size to meet tolerance requirements; then clamping the part by using a curved surface vacuum adsorption milling machine fixture, and realizing the rapid positioning of the brim-shaped curved surface wall plate in the length and width directions through 3 positioning pins and reference holes;
step 6, fine machining of the convex surface: firstly, reserving 1-1.5 mm of allowance for semi-finishing the top surface and the side surface of the rib and the curved surface of the web plate, loosening the inner hexagon screw, standing the part in a curved surface vacuum milling machine fixture for more than 2min, then screwing the inner hexagon screw to release the machining stress, and then performing subsequent machining on the part after removing the two positioning pins and the 1 auxiliary positioning pin; in order to ensure the thickness of the curved surface web plate, a wall thickness inspection groove with the diameter of 25mm is milled at the position of the curved surface web plate with the interval of 50-100 mm by reserving a margin of 0.5mm, the thickness of the curved surface web plate at the bottom of the inspection groove is measured, the curved surface web plate is finely machined by a phi 12R3 high-speed milling cutter, and the thickness and the surface roughness of the curved surface web plate are ensured by adopting reciprocating type line cutting machining with the residual height of less than or equal to 0.015 mm; and (3) finishing the top surface and the side surface of the rib, then processing a plane flange, adopting a reversed-square-shaped processing track from outside to inside for the plane flange, reserving a margin of 0.5mm for semi-finishing, measuring and checking the thickness of the plane flange, and then finishing in place by using a phi 12R3 high-speed milling cutter.
Further preferably, the deformation adjusting device comprises knurled nuts, positioning rods, adjusting rods, positioning nuts and butt rods, wherein two ends of each butt rod are connected with the two adjusting rods through the positioning nuts respectively, the positioning rods are sleeved on the two adjusting rods, and each positioning rod is arranged between the two knurled nuts on the corresponding adjusting rod; adjusting the knurled nuts to enable the positioning rods at two ends to be inserted into the technological bosses of the brim-shaped curved wall plate, adjusting the knurled nuts and realizing the extension and contraction of the positions of the positioning rods through the relative movement of the adjusting rods, the positioning nuts and the butt-joint rods; and the knurled nut is adjusted again, the distance between the two positioning rods is adjusted to be the theoretical value of the opening size of the cap edge-shaped curved wall plate through the relative motion of each part, and the tolerance requirement is met so as to meet the clamping requirement of the cap edge-shaped curved wall plate concave surface and the curved surface vacuum adsorption milling machine fixture.
Preferably, the curved surface vacuum adsorption milling jig comprises a milling jig base plate, a curved surface cushion block, two main positioning pins and 1 auxiliary positioning pin, wherein the milling jig base plate is provided with the curved surface cushion block, the tip end of the tongue close to the curved surface cushion block is provided with 1 positioning pin hole, the center position of the open top of the curved surface cushion block is provided with 1 positioning pin hole, and the waist close to the curved surface cushion block is provided with 1 positioning pin hole; 3 positioning pin holes of the curved surface vacuum adsorption milling jig correspond to 3 reference holes on a cap brim-shaped curved surface wall plate rough blank; a plurality of screw holes surrounding the curved surface cushion block are arranged on the milling machine fixture substrate.
Preferably, during clamping, the two main positioning pins and the 1 auxiliary positioning pin are connected with the 3 positioning pin holes and the 3 reference holes to realize quick positioning of the brim-shaped curved wall plate in the length and width directions, the processing precision of the concave variable-thickness curved surface is guaranteed, the two main positioning pins are installed firstly, then the 1 auxiliary positioning pin is installed, and the diameter tolerance of the auxiliary positioning pin ranges from minus 0.05mm to minus 0.03mm. And finally, fastening the brim-shaped curved-surface wallboard rough blank on a curved-surface vacuum adsorption milling fixture through a clamping inner hexagon screw, ensuring that the concave surface of the brim-shaped curved-surface wallboard rough blank is attached to the curved surface of the curved-surface cushion block of the curved-surface vacuum adsorption milling fixture, and finally disassembling the deformation adjusting device, two main positioning pins and 1 auxiliary positioning pin.
Further preferably, in step 1, four symmetrical stress relief grooves are simultaneously machined during rough machining of the concave surface in order to reduce machining deformation of the part.
Further preferably, the natural aging: the time is more than or equal to 72 hours, and the method is used for releasing residual stress in the rough machining process and reducing finish machining deformation.
Further preferably, in the step 3, the verticality between the reference hole and the reference surface is ensured to be within 0.05mm, and the hole position error of the reference hole is ensured to be within +/-0.05 mm;
further preferably, step 4 is to finish machine the concave surface by a high-speed numerical control milling machine.
Preferably, the profile of the curved surface cushion block is reduced by 0.05-0.1 mm compared with the concave surface of the part so as to avoid the interference phenomenon during the installation of the part.
The invention has the advantages that: by adopting the deformation adjusting device, the problem of local deformation of parts is better solved, and the superposition of the reference of processing the 1 st surface (concave surface) and the 2 nd surface (convex surface) is ensured. The problems of uneven wall thickness and processing tremble of the curved web can be solved well by the aid of the 1 set of curved surface vacuum adsorption milling machine fixture, and the part processing efficiency is improved.
Drawings
FIG. 1 is a schematic view of a brim-shaped curved wall panel.
Fig. 2 is a front view of the deformation adjusting device.
Fig. 3 is a right side view of the deformation adjusting device.
FIG. 4 is a schematic view of a curved vacuum adsorption milling fixture.
FIG. 5 is a schematic view of the convex clamping of a brim-shaped curved panel.
In the drawing, 1-knurled nut, 2-positioning rod, 3-adjusting rod, 4-positioning nut, 5-butt rod, 6-milling machine fixture base plate, 7-curved surface cushion block, 8-inner hexagon screw, 9-main positioning pin, 10-auxiliary positioning pin, 11-brim-shaped curved surface wall plate, 111-convex surface, 112-plane flange, 113-concave surface and 114-rib.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A method for processing a brim-shaped curved wall plate part comprises the steps that as shown in figure 1, a brim-shaped curved wall plate 11 consists of a curved surface and a circle of plane flanges 112 which are added at the edges of the curved surface and form variable inclination angles with the curved surface, the front end of the brim-shaped curved wall plate 11 is a visor, the rear end of the brim-shaped curved wall plate is an open-end, the edges of the rear end of the curved surface and the lower end of the curved surface are both provided with the plane flanges 112, the outer surface of the brim-shaped curved wall plate is a convex surface 111, and the inner surface of the brim-shaped curved wall plate is a concave surface 113; ribs 114 are arranged on the surface of the convex surface 111, and the ribs 114 comprise a plurality of transverse ribs transversely arranged along the surface of the convex surface 111 and a plurality of longitudinal ribs longitudinally arranged. The processing of the brim-shaped curved wall plate comprises the following specific steps:
step 1, rough machining: and (3) roughly machining the concave surface 113 and the convex surface 111, and manufacturing a rough hole of the reference hole, wherein the allowance is 2-4 mm after rough machining. In order to reduce the machining deformation of the part, four symmetrical stress relief grooves are simultaneously machined when the concave surface 113 is roughly machined.
Step 2, natural aging: the time is more than or equal to 72 hours, and the method is used for releasing the residual stress in the rough machining process and reducing the finish machining deformation.
Step 3, milling a datum plane and processing the datum: and milling a reference surface in a free state for eliminating part deformation in the natural aging process, wherein the reference surface is the bottom surface of the brim-shaped curved wall plate 11. Milling reference holes, milling 2 reference holes in the length direction of 11 rough blanks of the brim-shaped curved-surface wall plate, milling 1 reference hole in the end part of the visor of the 11 rough blanks of the brim-shaped curved-surface wall plate in 1 position, milling 1 reference hole in the width direction of 11 rough blanks of the brim-shaped curved-surface wall plate in the other 1 position at the center of the top of the opening of the 11 rough blanks of the brim-shaped curved-surface wall plate in the other 1 position, wherein the reference holes are positioned on one side of the waist part of the 11 brim-shaped curved-surface wall plate and consist of 3 reference holes, ensuring that the verticality of the reference holes and the reference surface is within 0.05mm, and ensuring that the errors of the hole positions of the reference holes are within +/-0.05 mm. The width direction datum hole can realize width direction alignment in a deformed state; and milling a datum plane and machining a datum hole to provide a positioning and clamping datum for subsequent finish machining.
Step 4, finish machining of the concave surface: and (4) processing by adopting a high-speed numerical control milling machine to reduce the deformation of the concave surface of the part.
Step 5, convex surface clamping and positioning: the deformation adjusting device shown in FIG. 2 is adopted to adjust the opening size of the concave surface to the theoretical size, and the requirement of the tolerance of 0 to +0.1mm is met. Then, the part is clamped by adopting a curved surface vacuum adsorption milling jig shown in fig. 4, and the cap edge-shaped curved surface wall plate 11 is quickly positioned in the length direction and the width direction through 3 positioning pins and reference holes.
Deformation adjusting device contains knurled nut 1, locating lever 2, adjusts pole 3, set nut 4, docking rod 5, and 5 both ends of docking rod are connected two through set nut 4 respectively and are adjusted pole 3, and two are adjusted all suit locating lever 2 on the pole 3, and every locating lever 2 all locates between two knurled nut 1 on the pole 3 are adjusted at the place. Adjust knurled nut 1 for both ends locating lever 2 can insert the technology boss of brim of a hat shape curved surface wallboard 11, adjust knurled nut 1, can realize the extension and the shrink of locating lever 2 position through adjusting the relative motion of pole 3, set nut 4, butt joint pole 5. And adjusting the knurled nut 1 again, adjusting the distance between the two positioning rods 2 to the theoretical value of the opening size of the brim-shaped curved wall plate 11 through the relative motion of each part, and meeting the requirement of 0 to +0.1mm of tolerance so as to meet the requirement that the concave surface 113 of the brim-shaped curved wall plate 11 can be clamped with a curved surface vacuum adsorption milling machine fixture.
As shown in fig. 3, the curved surface vacuum adsorption milling jig comprises a milling jig base plate 6, a curved surface cushion block 7, two main positioning pins 9 and 1 auxiliary positioning pin 10, wherein the milling jig base plate 6 is provided with the curved surface cushion block 7, the tip of the tongue close to the curved surface cushion block 7 is provided with 1 positioning pin hole, the open top center position of the curved surface cushion block 7 is provided with 1 positioning pin hole, and the waist close to the curved surface cushion block 7 is provided with 1 positioning pin hole; 3 positioning pin holes of the curved surface vacuum adsorption milling jig correspond to 3 reference holes on the rough blank of the brim-shaped curved surface wall plate 11; the milling jig base plate 6 is provided with a plurality of screw holes surrounding the curved surface cushion block 7. The profile of the curved surface cushion block 7 is reduced by 0.05-0.1 mm compared with the concave surface of the part so as to avoid the interference phenomenon generated during the installation of the part.
During clamping, the two main positioning pins 9 and the 1 auxiliary positioning pin 10 are connected with the 3 positioning pin holes and the 3 datum holes to realize quick positioning of the brim-shaped curved wall plate 11 in the length and width directions, the processing precision of the concave variable-thickness curved surface is guaranteed, the two main positioning pins 9 are installed firstly, then the 1 auxiliary positioning pin 10 is installed, and the diameter tolerance of the auxiliary positioning pin 10 is minus 0.05 to minus 0.03mm. And finally, fastening the coarse blank of the brim-shaped curved-surface wall plate 11 on a curved-surface vacuum adsorption milling fixture through a clamping inner hexagon screw 8, ensuring that the concave surface of the coarse blank of the brim-shaped curved-surface wall plate 11 is attached to the curved surface of the curved-surface cushion block 7 of the curved-surface vacuum adsorption milling fixture, and finally disassembling the deformation adjusting device, the two main positioning pins 9 and the 1 auxiliary positioning pin 10 to avoid interference and collision during processing.
Step 6, finishing the convex surface: after the top surface, the side surface and the web curved surface of the semi-finishing rib 114 with the allowance of 1-1.5 mm are reserved, the inner hexagon screw 8 is loosened, the part is kept stand in a curved surface vacuum milling machine clamp for more than 2min, and then the inner hexagon screw 8 is screwed down to release the machining stress. After the two positioning pins 9 and the 1 auxiliary positioning pin 10 are removed, the subsequent processing of the part is carried out, and the method can better solve the deformation problem of the plane flange 112 after the fine processing of the part. In order to ensure the thickness of the curved surface web plate, a wall thickness inspection groove with the diameter of 25mm is milled at the position of the curved surface web plate with the interval of 50-100 mm by reserving a margin of 0.5mm, the thickness of the curved surface web plate at the bottom of the inspection groove is measured, the curved surface web plate is finely processed by a phi 12R3 high-speed milling cutter, and the thickness and the surface roughness of the curved surface web plate can be better ensured by adopting reciprocating type cutting processing with the residual height of less than or equal to 0.015 mm. And (3) finishing the top surface and the side surface of the flat flange 112 after finishing, wherein the flat flange 112 adopts a reversed-square-shaped processing track from outside to inside, a 0.5mm allowance is reserved for semi-finishing, and after the thickness of the flat flange is measured and checked, a phi 12R3 high-speed milling cutter is used for finishing in place.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (9)

1. The method for processing the brim-shaped curved wall plate part is characterized in that the brim-shaped curved wall plate (11) consists of a curved surface and a circle of plane flange (112) which is added on the edge of the curved surface and forms a variable inclination angle with the curved surface, the front end of the brim-shaped curved wall plate (11) is provided with a visor, the rear end of the brim-shaped curved wall plate is provided with an open shelf, the edge of the rear end of the curved surface and the edge of the lower end of the curved surface are both provided with the plane flange (112), the outer surface of the brim-shaped curved wall plate is a convex surface (111), and the inner surface of the brim-shaped curved wall plate is a concave surface (113); ribs (114) are arranged on the surface of the convex surface (111), and the ribs (114) comprise a plurality of transverse ribs arranged transversely along the surface of the convex surface (111) and a plurality of longitudinal ribs arranged longitudinally; the processing of the brim-shaped curved wall plate comprises the following specific steps:
step 1, rough machining: roughly machining the concave surface (113) and the convex surface (111), manufacturing a reference hole rough hole, and reserving the allowance of 2-4 mm after rough machining;
step 2, natural aging;
step 3, milling a datum plane and processing the datum: milling a reference surface in a free state, wherein the reference surface is the bottom surface of the brim-shaped curved wall plate (11); milling reference holes, wherein 2 reference holes are milled in the length direction of a rough blank of the brim-shaped curved wall plate (11), 1 reference hole is positioned at the end part of the visor of the rough blank of the brim-shaped curved wall plate (11), the other 1 reference hole is positioned at the center of the top of the opening of the rough blank of the brim-shaped curved wall plate (11), 1 reference hole is milled in the width direction of the brim-shaped curved wall plate (11), and the reference holes are positioned on one side of the waist part of the brim-shaped curved wall plate (11) and are 3 reference holes in total;
step 4, finish machining the concave surface;
step 5, convex surface clamping and positioning: the deformation adjusting device adjusts the opening size of the concave surface to a theoretical size to meet the tolerance requirement; then clamping the part by using a curved surface vacuum adsorption milling machine fixture, and realizing the rapid positioning of the brim-shaped curved surface wall plate (11) in the length and width directions through 3 positioning pins and reference holes;
step 6, finishing the convex surface: firstly, reserving 1-1.5 mm of allowance for semi-finish machining of the top surface and the side surface of the rib (114) and the curved surface of the web plate, loosening the inner hexagon screw (8), standing the part in a curved surface vacuum milling machine fixture for more than 2min, then screwing the inner hexagon screw (8) to release machining stress, and then performing subsequent machining on the part after removing the two positioning pins (9) and the 1 auxiliary positioning pin (10); in order to ensure the thickness of the curved-surface web, a wall thickness inspection groove with the diameter of 25mm is milled at the position of the curved-surface web at the interval of 50-100 mm by reserving a margin of 0.5mm, the thickness of the curved-surface web at the bottom of the inspection groove is measured, the curved-surface web is finely machined by a phi 12R3 high-speed milling cutter, and the thickness and the surface roughness of the curved-surface web are ensured by adopting reciprocating type line cutting machining with the residual height of less than or equal to 0.015 mm; and (3) finishing the top surface and the side surface of the rib (114) to form a plane flange (112), wherein the plane flange (112) adopts a reversed-square-shaped processing track from outside to inside, a 0.5mm allowance is reserved for semi-finishing, and after the thickness of the plane flange is measured and checked, a phi 12R3 high-speed milling cutter is used for finishing in place.
2. The processing method of the hat brim-shaped curved wall plate part according to claim 1, wherein the deformation adjusting device comprises knurled nuts (1), positioning rods (2), adjusting rods (3), positioning nuts (4) and butt-joint rods (5), two ends of each butt-joint rod (5) are respectively connected with the two adjusting rods (3) through the positioning nuts (4), the positioning rods (2) are sleeved on the two adjusting rods (3), and each positioning rod (2) is arranged between the two knurled nuts (1) on the adjusting rod (3); the knurled nut (1) is adjusted, so that the positioning rods (2) at two ends can be inserted into the technological boss of the brim-shaped curved wall plate (11), and the knurled nut (1) is adjusted, so that the position of the positioning rod (2) can be extended and contracted through the relative movement of the adjusting rod (3), the positioning nut (4) and the butt joint rod (5); and (3) adjusting the knurled nut (1) again, adjusting the distance between the two positioning rods (2) into the theoretical value of the opening size of the brim-shaped curved wall plate (11) through the relative motion of each part, and meeting the tolerance requirement so as to meet the clamping requirement of the concave surface (113) of the brim-shaped curved wall plate (11) and a curved surface vacuum adsorption milling machine fixture.
3. The method for processing the brim-shaped curved wall panel part according to claim 1, wherein the curved vacuum adsorption milling fixture comprises a milling fixture substrate (6), a curved cushion block (7), two main positioning pins (9) and 1 auxiliary positioning pin (10), the milling fixture substrate (6) is provided with the curved cushion block (7), the tongue tip end close to the curved cushion block (7) is provided with 1 positioning pin hole, the open top center position of the curved cushion block (7) is provided with 1 positioning pin hole, and the waist part close to the curved cushion block (7) is provided with 1 positioning pin hole; 3 positioning pin holes of the curved surface vacuum adsorption milling jig correspond to 3 reference holes on a rough blank of the brim-shaped curved surface wall plate (11); and a plurality of screw holes surrounding the curved surface cushion block (7) are arranged on the milling machine fixture substrate (6).
4. The method for processing the brim-shaped curved wall plate part according to claim 3, wherein during clamping, the two main positioning pins (9) and the 1 auxiliary positioning pin (10) are connected with the 3 positioning pin holes and the 3 reference holes to realize rapid positioning of the brim-shaped curved wall plate (11) in the length and width directions, so as to ensure the processing precision of the concave variable-thickness curved surface, the two main positioning pins (9) are firstly installed, then the 1 auxiliary positioning pin (10) is installed, finally, the rough blank of the brim-shaped curved wall plate (11) is fastened on a curved surface vacuum adsorption milling machine fixture through a clamping inner hexagon screw (8), so as to ensure that the concave surface of the rough blank of the brim-shaped curved wall plate (11) is attached to the curved surface of the curved surface cushion block (7) of the curved surface vacuum adsorption milling machine fixture, and finally, the deformation adjusting device is disassembled, and the two main positioning pins (9) and the 1 auxiliary positioning pin (10).
5. The method for manufacturing a curved wall panel component of a hat brim shape according to claim 1, wherein in step 1, four stress relief grooves are simultaneously formed in symmetry when the concave surface (113) is roughly formed.
6. The method of claim 1, wherein the natural aging comprises: not less than 72 hours.
7. The method for manufacturing a brim-shaped curved wall plate component according to claim 1, wherein in step 3, the perpendicularity between the reference hole and the reference surface is ensured to be within 0.05mm, and the hole position error of the reference hole is ensured to be within ± 0.05 mm.
8. The method of claim 1, wherein step 4 comprises finishing the concave surface with a high speed numerically controlled milling machine.
9. The method for manufacturing a curved wall panel component in the shape of a brim of a hat according to claim 3, wherein the profile of the curved spacer (7) is reduced by 0.05 to 0.1mm from the concave surface of the component.
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CN115890163B (en) * 2022-12-26 2024-04-30 江西洪都航空工业集团有限责任公司 Manufacturing process of large-curvature full-profile air inlet channel wallboard

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