CN114833528B - Forming method and device for totally-enclosed cavity type special-shaped curved wing - Google Patents
Forming method and device for totally-enclosed cavity type special-shaped curved wing Download PDFInfo
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- CN114833528B CN114833528B CN202210337088.0A CN202210337088A CN114833528B CN 114833528 B CN114833528 B CN 114833528B CN 202210337088 A CN202210337088 A CN 202210337088A CN 114833528 B CN114833528 B CN 114833528B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B64C—AEROPLANES; HELICOPTERS
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Abstract
The embodiment of the invention discloses a forming method of a totally-enclosed cavity type special-shaped curved wing, which comprises the following steps: respectively processing the outer frame, the inner ribs and the mask into preset shapes and sizes; assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing; annealing the initial special-shaped curved wing, and correcting the shape of the annealed initial special-shaped curved wing; sequentially carrying out rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode; oxidizing treatment and priming treatment are carried out at the preset position of the initial special-shaped curved wing; after the whole initial special-shaped curved wing is heated to a preset temperature, filling asphalt from a filling opening until the inner cavity is filled; and (3) carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing. The invention improves the forming precision of the workpiece in a mode of respectively forming the outer frame, the inner ribs and the mask, reasonably arranges the forming steps and improves the forming rate of the workpiece.
Description
Technical Field
The invention relates to the field of machining, in particular to a method and a device for forming a totally-enclosed cavity type special-shaped curved wing.
Background
The existing propulsion cabin section of a certain product belongs to stabilizing wings, rudder blades and the like, the appearance of the propulsion cabin section is a complex special-shaped curved sheet, grid type reinforcing ribs are arranged in the propulsion cabin section, and mounting interfaces are arranged on the upper side and the lower side of the propulsion cabin section.
After the processing is required to be completed, the appearance curved surface precision and the mounting interface assembly and positioning precision can be ensured, and finally the internal asphalt filling is carried out, and the overall balance degree of the asphalt filling is ensured.
The workpiece has the external dimension of 1120 multiplied by 830 multiplied by 80mm, adopts 5A06 aluminum alloy material, has the structural characteristics of wide width, large height difference of the curved surface and large cavity volume, and has large deformation, easy out-of-tolerance precision of the curved surface and the mounting interface in the process of part process molding and great processing difficulty.
Aiming at the problems that the workpiece is difficult to process and the precision and the camber degree are difficult to guarantee in the prior art, no effective solution exists at present.
Disclosure of Invention
In order to solve the problems, the invention provides a fully-closed cavity type special-shaped curved wing forming method, which comprises the steps of respectively processing and forming an outer frame, an inner rib and a mask, welding the outer frame, the inner rib and the mask into an initial special-shaped curved wing, and then performing processes such as correction, machining, oxidation, priming paint, asphalt pouring, lead filling counterweight and balance degree test on the opposite curved wing, wherein the process flow is reasonably arranged, the processing precision and the curvature degree are ensured, and the balance of a workpiece is ensured, so that the problems of high processing difficulty, and difficult guarantee of the precision and the curvature degree of the workpiece are solved.
In order to achieve the above purpose, the invention provides a method for forming a fully-closed cavity type special-shaped curved wing, which comprises the following steps: respectively processing the outer frame, the inner ribs and the mask into preset shapes and sizes; assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing; annealing the initial special-shaped curved wing, and correcting the shape of the annealed initial special-shaped curved wing; sequentially carrying out rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode; oxidizing treatment and priming treatment are carried out at the preset position of the initial special-shaped curved wing; after the whole initial special-shaped curved wing is heated to a preset temperature, filling asphalt from a filling opening until the inner cavity is filled; and (3) carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing.
Further optionally, the assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing, including: welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode; and welding the last mask plate with the inner rib in a plug welding mode.
Further alternatively, the current used in assembly welding is in the range of 170A-180A.
Further optionally, the processing the outer frame, the inner ribs and the mask into predetermined shapes and sizes respectively includes: assembling and welding a plurality of parts into the outer frame, and reserving machining allowance on the outer shape of the outer frame; the inner ribs are formed by cutting and processing plates; the mask is formed by pressing a plate.
Further optionally, the measuring the lead filling counterweight and the balance degree of the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, to obtain the molded special-shaped curved wing, includes: cleaning the initial special-shaped curved wing; performing balance degree measurement on the initial special-shaped curved wing to obtain a first balance degree; calculating the weight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree; lead filling weight is carried out on the initial special-shaped curved wing according to the weight; performing balance measurement on the initial special-shaped curved wing after lead filling counterweight to obtain second balance; if the second balance degree reaches the standard balance degree, finishing the counterweight to obtain the molded curved wing; if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
On the other hand, the embodiment of the invention provides a fully-closed cavity type special-shaped curved wing forming device, which comprises: the forming module is used for respectively processing the outer frame, the inner ribs and the mask into preset shapes and sizes; the connecting module is used for assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing; the shape correcting module is used for annealing the initial special-shaped curved wing and correcting the annealed initial special-shaped curved wing; the machining module is used for sequentially carrying out rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode; the anticorrosion treatment module is used for carrying out oxidation treatment and priming treatment on the preset position of the initial special-shaped curved wing; the asphalt injection module is used for injecting asphalt from an injection port until the inner cavity is filled after the whole initial special-shaped curved wing is heated to a preset temperature; and the balance degree detection module is used for carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing.
Further optionally, the connection module includes: the first welding sub-module is used for welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode; and the second welding sub-module is used for welding the last mask plate with the inner rib in a plug welding mode.
Further optionally, the current range adopted in the assembly welding is 170A-180A.
Further optionally, the forming module includes: the outer frame forming submodule is used for assembling and welding a plurality of parts into the outer frame, and machining allowance is reserved on the outer shape of the outer frame; the inner rib forming sub-module is used for cutting and forming the inner rib by using a plate material; and the mask forming sub-module is used for pressing and forming the mask by adopting a plate.
Further optionally, the balance detection module includes: the cleaning submodule is used for cleaning the initial special-shaped curved wing; the first balance degree measurement submodule is used for measuring the balance degree of the initial special-shaped curved wing to obtain a first balance degree; the counterweight calculation operator module is used for calculating the counterweight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree; the lead filling weight sub-module is used for filling lead into the initial special-shaped curved wing according to the weight; the second balance measurement submodule is used for measuring the balance of the initial special-shaped curved wing after lead filling and weight balancing to obtain second balance; the judging sub-module is used for completing the counterweight to obtain the molded curved wing if the second counterweight reaches the standard counterweight; if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
The technical scheme has the following beneficial effects: according to the embodiment of the invention, the process design is carried out aiming at the structural characteristics of the special-shaped curved wing, the special-shaped curved wing is divided into three types of parts, namely an outer frame, an inner rib and a mask, and the specific forming process design is carried out according to the characteristics of the three types of parts respectively, so that the final realization of the part is ensured; in the processes of assembly welding and welding forming, adopting relevant deformation control measures to control the deformation of welding to the greatest extent, and eliminating stress; aiming at ensuring the dimensional accuracy of the appearance curved surface, high-precision machining equipment is adopted for carrying out; and (3) for filling and overall balancing of the internal asphalt, reasonably arranging the process sequence so as to improve the forming rate of the workpiece and the quality of the finished workpiece.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for forming a fully-closed cavity type special-shaped curved wing, which is provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of the internal structure of a fully-closed cavity type special-shaped curved wing provided by the embodiment of the invention;
FIG. 3 is a schematic view of the external structure of a fully-closed cavity type special-shaped curved wing provided by the embodiment of the invention;
FIG. 4 is a flowchart of a method for assembling and welding a fully-closed cavity type special-shaped curved wing provided by an embodiment of the invention;
FIG. 5 is a flow chart of a method for respectively processing and forming an outer frame, an inner rib and a mask of a fully-closed cavity type special-shaped curved wing provided by the embodiment of the invention;
FIG. 6 is a schematic view of a cover plate structure of a fully enclosed cavity shaped curved wing provided by an embodiment of the present invention;
FIG. 7 is a flowchart of a method for measuring balance according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a fully-enclosed cavity-type special-shaped curved wing forming device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a connection module according to an embodiment of the present invention;
FIG. 10 is a schematic view of a molding module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a balance detection module according to an embodiment of the present invention.
Reference numerals: 1-outer frame 1001-outer frame molding submodule 1002-inner rib molding submodule 1003-mask molding submodule 2-inner rib 3-mask 4-mounting interface 5-pouring port 6-counterweight port 100-molding module 200-connecting module 2001-first welding submodule 2002-second welding submodule 300-shaping module 400-machining module 500-anti-corrosion processing module 600-asphalt injection module 700-balance detection module 7001-cleaning submodule 7002-first balance measurement submodule 7003-counterweight calculation operator module 7004-lead pouring counterweight submodule 7005-second balance measurement submodule 7006-judging submodule
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problems of high processing difficulty, high precision and high degree of curvature of a workpiece in the prior art, the invention provides a fully-closed cavity type special-shaped curved wing forming method, and fig. 1 is a flow chart of the fully-closed cavity type special-shaped curved wing forming method provided by the embodiment of the invention, as shown in fig. 1, and the method comprises the following steps:
s1, respectively processing an outer frame, an inner rib and a mask into a preset shape and size;
fig. 2 is a schematic diagram of an internal structure of a fully-closed cavity type special-shaped curved wing provided by the embodiment of the invention, and as shown in fig. 2, the special-shaped curved wing has a closed structure. In the embodiment of the invention, the special-shaped curved wing is divided into three independent parts for processing respectively, namely an outer frame 1, a mask 3 and an inner rib 2. The outer frame 1 has a structure surrounded by four sides, and a plurality of mounting interfaces 4 are formed on the outer frame 1. The top and bottom of the outer frame 1 are respectively provided with a mask 3. The inner cavity of the special-shaped curved wing is provided with grid-shaped reinforcing ribs, namely inner ribs 2.
In this embodiment, the outer frame, the mask and the inner ribs are processed into predetermined shapes and sizes according to respective process requirements of the outer frame, the mask and the inner ribs.
As an alternative embodiment, the outer frame, the mask and the inner ribs all leave a machining allowance during machining.
S2, assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing;
and (3) assembling and welding the outer frame, the inner ribs and the mask plate into an integral workpiece according to integral processing requirements, and ensuring the requirement of external dimensions (including process allowance).
As an alternative embodiment, the predetermined connection position of the outer frame is marked in advance before the assembly welding.
S3, annealing the initial special-shaped curved wing, and correcting the shape of the annealed initial special-shaped curved wing;
and (3) annealing and destressing the welded initial special-shaped curved wing, and correcting the shape according to the requirement of the external dimension (including the process allowance) so as to reduce the deformation cracking tendency of the initial special-shaped curved wing, thereby providing a foundation for a subsequent machine.
S4, sequentially performing rough machining and finish machining on the initial special-shaped curved wing after the shape correction in a machining mode;
and machining the initial special-shaped curved wing after the shape correction in a machining mode, firstly performing rough machining on the initial special-shaped curved wing, then performing aging stress relief, and then performing finish machining. In the process, the assembly positioning mechanism is required to be processed and finished after one-time clamping.
S5, performing oxidation treatment and priming treatment on the preset position of the initial special-shaped curved wing;
after machining, the workpiece is subjected to oxidation and priming treatment, the corrosion resistance of the whole special-shaped curved wing is ensured, and the adhesive force of paint is ensured.
S6, after the whole initial special-shaped curved wing is heated to a preset temperature, filling asphalt from a filling port until the inner cavity is filled;
fig. 3 is a schematic diagram of the external structure of a fully-closed cavity-type special-shaped curved wing provided by the embodiment of the invention, and as shown in fig. 3, a filling opening 5 is further formed on the outer frame, and asphalt is filled from the filling opening 5 until the inner cavity is filled.
As an alternative embodiment, the predetermined temperature is 100 ℃.
And S7, carrying out lead filling counterweight and balance measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, and obtaining the formed special-shaped curved wing.
As shown in fig. 3, a counterweight opening 6 is provided in advance on a mask plate on one side, and is used for lead-filling counterweight, and after lead-filling counterweight, the initial special-shaped curved wing is subjected to a balance degree test, so that the balance degree of the initial special-shaped curved wing meets the requirement of the balance degree, and the final shaped special-shaped curved wing is obtained.
As an alternative implementation manner, fig. 4 is a flowchart of a method for assembling and welding a full-closed cavity type special-shaped curved wing, where, as shown in fig. 4, an outer frame, an inner rib and a mask are assembled and welded to obtain an initial special-shaped curved wing, and the method includes:
s201, welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode;
s202, welding the last mask plate and the inner rib in a plug welding mode.
In the assembly welding process, firstly, the inner ribs and the mask on one side are welded on the outer frame, the process adopts a welding mode of symmetrical welding, and then when the mask on the other side is installed on one side of the outer frame according to a preset position, the mask and the inner ribs are welded in a plug welding mode. The mask plates on two sides can be welded and fixed with the inner ribs, and the problem of welding dislocation cannot occur.
As an alternative embodiment, the current range used in assembly welding is 170A-180A.
To ensure accuracy in welding, a small current, preferably 170A-180A, is used for welding.
As an alternative implementation manner, fig. 5 is a flowchart of a method for respectively processing and forming an outer frame, an inner rib and a mask of a fully-closed cavity type special-shaped curved wing provided by the embodiment of the present invention, as shown in fig. 5, the method for respectively processing the outer frame, the inner rib and the mask into predetermined shapes and sizes includes:
s101, assembling and welding a plurality of parts into an outer frame, and reserving machining allowance on the outer shape of the outer frame;
s102, cutting and forming the inner rib by adopting a plate material;
s103, the mask is formed by pressing a plate.
The outer frame (containing the installation interface) is formed by assembling and welding split parts into a whole and leaves machining allowance.
As an alternative embodiment, the profile leaves a machining allowance of 5 mm.
The inner rib part is directly cut and formed by a plate material.
Fig. 6 is a schematic diagram of a mask structure of a fully-enclosed cavity-type special-shaped curved wing according to an embodiment of the present invention, where, as shown in fig. 6, the mask is formed by pressing a plate.
As an alternative implementation manner, fig. 7 is a flowchart of a method for measuring balance provided by the embodiment of the present invention, where, as shown in fig. 7, lead-filling balance weight and balance measurement are performed on an initial special-shaped curved wing until the initial special-shaped curved wing meets a requirement of balance, so as to obtain a molded special-shaped curved wing, including:
s701, cleaning initial special-shaped curved surface wings;
cleaning the initial special-shaped curved wing, and avoiding the influence of residual impurities on the special-shaped curved wing on balance measurement.
S702, measuring the balance degree of the initial special-shaped curved wing to obtain a first balance degree;
and (3) measuring the balance degree of the initial special-shaped curved wing after lead filling to obtain the existing first balance degree.
S703, calculating the weight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree;
and calculating the weight required by the initial curved wing to reach the process balance requirement according to the first balance degree and the standard balance degree. The standard balance degree can be a range or a specific number, and is determined according to actual process requirements.
S704, carrying out lead filling counterweight on the initial special-shaped curved wing according to the weight;
and pre-melting the lead block, and pouring the lead block into a counterweight opening reserved in the initial special-shaped curved wing according to the counterweight amount.
S705, measuring the balance degree of the initial special-shaped curved wing after lead filling counterweight to obtain a second balance degree;
s706, if the second balance degree reaches the standard balance degree, finishing the balance weight to obtain a molded curved wing; if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
And (3) measuring the balance degree of the initial special-shaped curved wing after the lead filling counterweight, and obtaining a second balance degree. Judging whether the second balance meets the balance requirement in the process or not, comparing the second balance with the standard balance, and if the second balance meets the standard balance, considering that the special-shaped curved wing is balanced; if the second balance degree does not meet the standard balance degree, the special-shaped curved wing is considered to be unbalanced, the weight is calculated again, and lead filling is carried out again until the balance degree meets the standard balance degree.
On the other hand, the embodiment of the invention provides a fully-closed cavity type special-shaped curved wing forming device, and fig. 8 is a schematic structural diagram of the fully-closed cavity type special-shaped curved wing forming device provided by the embodiment of the invention, as shown in fig. 8, the device comprises:
a molding module 100 for processing the outer frame, the inner ribs and the mask plate into predetermined shapes and sizes, respectively;
as shown in fig. 2, the special-shaped curved wing has a closed structure. In the embodiment of the invention, the special-shaped curved wing is divided into three independent parts for processing respectively, namely an outer frame 1, a mask 3 and an inner rib 2. The outer frame 1 has a structure surrounded by four sides, and a plurality of mounting interfaces 4 are formed on the outer frame 1. The top and bottom of the outer frame 1 are respectively provided with a mask 3. The inner cavity of the special-shaped curved wing is provided with grid-shaped reinforcing ribs, namely inner ribs 2.
In this embodiment, the outer frame, the mask and the inner ribs are processed into predetermined shapes and sizes according to respective process requirements of the outer frame, the mask and the inner ribs.
As an alternative embodiment, the outer frame, the mask and the inner ribs all leave a machining allowance during machining.
The connecting module 200 is used for assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing;
and (3) assembling and welding the outer frame, the inner ribs and the mask plate into an integral workpiece according to integral processing requirements, and ensuring the requirement of external dimensions (including process allowance).
As an alternative embodiment, the predetermined connection position of the outer frame is marked in advance before the assembly welding.
The shape correction module 300 is used for annealing the initial special-shaped curved wing and correcting the annealed initial special-shaped curved wing;
and (3) annealing and destressing the welded initial special-shaped curved wing, and correcting the shape according to the requirement of the external dimension (including the process allowance) so as to reduce the deformation cracking tendency of the initial special-shaped curved wing, thereby providing a foundation for a subsequent machine.
The machining module 400 is used for sequentially performing rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode;
and machining the initial special-shaped curved wing after the shape correction in a machining mode, firstly performing rough machining on the initial special-shaped curved wing, then performing aging stress relief, and then performing finish machining. In the process, the assembly positioning mechanism is required to be processed and finished after one-time clamping.
The anti-corrosion treatment module 500 is used for carrying out oxidation treatment and priming treatment on the preset position of the initial special-shaped curved wing;
after machining, the workpiece is subjected to oxidation and priming treatment, the corrosion resistance of the whole special-shaped curved wing is ensured, and the adhesive force of paint is ensured.
The asphalt injection module 600 is used for injecting asphalt from an injection port until the inner cavity is filled after the whole initial special-shaped curved wing is heated to a preset temperature;
as shown in fig. 3, the outer frame is further provided with a filling opening 5, and asphalt is filled from the filling opening 5 until the inner cavity is filled.
As an alternative embodiment, the predetermined temperature is 100 ℃.
And the balance degree detection module 700 is used for carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing.
As shown in fig. 3, a counterweight opening 6 is provided in advance on a mask plate on one side, and is used for lead-filling counterweight, and after lead-filling counterweight, the initial special-shaped curved wing is subjected to a balance degree test, so that the balance degree of the initial special-shaped curved wing meets the requirement of the balance degree, and the final shaped special-shaped curved wing is obtained.
As an alternative implementation manner, fig. 9 is a schematic structural diagram of a connection module provided in the embodiment of the present invention, and as shown in fig. 9, the connection module 200 includes:
a first welding submodule 2001 for welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode;
and a second welding submodule 2002, which is used for welding the last mask plate and the inner rib in a plug welding mode.
In the assembly welding process, firstly, the inner ribs and the mask on one side are welded on the outer frame, the process adopts a welding mode of symmetrical welding, and then when the mask on the other side is installed on one side of the outer frame according to a preset position, the mask and the inner ribs are welded in a plug welding mode. The mask plates on two sides can be welded and fixed with the inner ribs, and the problem of welding dislocation cannot occur.
As an alternative embodiment, the current range used in assembly welding is 170A-180A.
To ensure accuracy in welding, a small current, preferably 170A-180A, is used for welding.
As an alternative implementation manner, fig. 10 is a schematic structural diagram of a molding module provided by the embodiment of the present invention, and as shown in fig. 10, a molding module 100 includes:
the outer frame molding submodule 1001 is used for assembling and welding a plurality of parts into an outer frame, and machining allowance is reserved on the outer shape of the outer frame;
an inner rib forming submodule 1002, configured to cut and form an inner rib by using a plate material;
a mask forming sub-module 1003 is configured to press form the mask from a sheet material.
The outer frame (containing the installation interface) is formed by assembling and welding split parts into a whole and leaves machining allowance.
As an alternative embodiment, the profile leaves a machining allowance of 5 mm.
The inner rib part is directly cut and formed by a plate material.
As shown in fig. 6, the mask is formed by pressing a plate material.
As an alternative implementation, fig. 11 is a schematic structural diagram of a balance detection module provided in an embodiment of the present invention, where the balance detection module 700 includes:
the cleaning submodule 7001 is used for cleaning the initial special-shaped curved wing;
cleaning the initial special-shaped curved wing, and avoiding the influence of residual impurities on the special-shaped curved wing on balance measurement.
The first balance measurement submodule 7002 is used for measuring the balance of the initial special-shaped curved wing to obtain a first balance;
and (3) measuring the balance degree of the initial special-shaped curved wing after lead filling to obtain the existing first balance degree.
The counterweight calculation operator module 7003 is used for calculating the counterweight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree;
and calculating the weight required by the initial curved wing to reach the process balance requirement according to the first balance degree and the standard balance degree. The standard balance degree can be a range or a specific number, and is determined according to actual process requirements.
The lead filling counterweight submodule 7004 is used for filling lead into the initial special-shaped curved wing according to the weight;
and pre-melting the lead block, and pouring the lead block into a counterweight opening reserved in the initial special-shaped curved wing according to the counterweight amount.
The second balance measurement submodule 7005 is used for measuring the balance of the initial special-shaped curved wing after lead filling and weight balancing to obtain second balance;
judging submodule 7006, configured to complete the counterweight to obtain a molded curved wing if the second counterweight reaches the standard counterweight; if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
And (3) measuring the balance degree of the initial special-shaped curved wing after the lead filling counterweight, and obtaining a second balance degree. Judging whether the second balance meets the balance requirement in the process or not, comparing the second balance with the standard balance, and if the second balance meets the standard balance, considering that the special-shaped curved wing is balanced; if the second balance degree does not meet the standard balance degree, the special-shaped curved wing is considered to be unbalanced, the weight is calculated again, and lead filling is carried out again until the balance degree meets the standard balance degree.
The technical scheme has the following beneficial effects: according to the embodiment of the invention, the process design is carried out aiming at the structural characteristics of the special-shaped curved wing, the special-shaped curved wing is divided into three types of parts, namely an outer frame, an inner rib and a mask, and the specific forming process design is carried out according to the characteristics of the three types of parts respectively, so that the final realization of the part is ensured; in the processes of assembly welding and welding forming, adopting relevant deformation control measures to control the deformation of welding to the greatest extent, and eliminating stress; aiming at ensuring the dimensional accuracy of the appearance curved surface, high-precision machining equipment is adopted for carrying out; and (3) for filling and overall balancing of the internal asphalt, reasonably arranging the process sequence so as to improve the forming rate of the workpiece and the quality of the finished workpiece.
The foregoing description of the embodiments of the present invention further provides a detailed description of the objects, technical solutions and advantages of the present invention, and it should be understood that the foregoing description is only illustrative of the embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. that fall within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The forming method of the totally-enclosed cavity type special-shaped curved wing is characterized by comprising the following steps of:
respectively processing the outer frame, the inner ribs and the mask into preset shapes and sizes;
assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing;
annealing the initial special-shaped curved wing, and correcting the shape of the annealed initial special-shaped curved wing;
sequentially carrying out rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode; wherein the initial special-shaped curved wing is subjected to aging stress relief between rough machining and finish machining;
oxidizing treatment and priming treatment are carried out at the preset position of the initial special-shaped curved wing;
after the whole initial special-shaped curved wing is heated to a preset temperature, filling asphalt from a filling opening until the inner cavity is filled;
and (3) carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing.
2. The method for forming the fully-enclosed cavity-type special-shaped curved wing according to claim 1, wherein the assembling and welding the outer frame, the inner ribs and the mask to obtain the initial special-shaped curved wing comprises the following steps:
welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode;
and welding the last mask plate with the inner rib in a plug welding mode.
3. The method for forming the fully-enclosed cavity-type special-shaped curved wing according to any one of claims 1 to 2, which is characterized by comprising the following steps:
the current range adopted in assembly welding is 170A-180A.
4. The method for forming the fully-enclosed cavity-type special-shaped curved wing according to claim 1, wherein the steps of processing the outer frame, the inner ribs and the mask into predetermined shapes and sizes respectively include:
assembling and welding a plurality of parts into the outer frame, and reserving machining allowance on the outer shape of the outer frame;
the inner ribs are formed by cutting and processing plates;
the mask is formed by pressing a plate.
5. The method for forming a fully-enclosed cavity-type special-shaped curved wing according to claim 1, wherein the step of performing lead filling counterweight and balance measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the balance requirement, and obtaining the formed special-shaped curved wing comprises the following steps:
cleaning the initial special-shaped curved wing;
performing balance degree measurement on the initial special-shaped curved wing to obtain a first balance degree;
calculating the weight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree;
lead filling weight is carried out on the initial special-shaped curved wing according to the weight;
performing balance measurement on the initial special-shaped curved wing after lead filling counterweight to obtain second balance;
if the second balance degree reaches the standard balance degree, finishing the counterweight to obtain the molded special-shaped curved wing;
if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
6. The utility model provides a totally closed cavity formula dysmorphism curved surface wing forming device which characterized in that includes:
the forming module is used for respectively processing the outer frame, the inner ribs and the mask into preset shapes and sizes;
the connecting module is used for assembling and welding the outer frame, the inner ribs and the mask to obtain an initial special-shaped curved wing;
the shape correcting module is used for annealing the initial special-shaped curved wing and correcting the annealed initial special-shaped curved wing;
the machining module is used for sequentially carrying out rough machining and finish machining on the initial irregularly-shaped curved wing after the shape correction in a machining mode; wherein the initial special-shaped curved wing is subjected to aging stress relief between rough machining and finish machining;
the anticorrosion treatment module is used for carrying out oxidation treatment and priming treatment on the preset position of the initial special-shaped curved wing;
the asphalt injection module is used for injecting asphalt from an injection port until the inner cavity is filled after the whole initial special-shaped curved wing is heated to a preset temperature;
and the balance degree detection module is used for carrying out lead filling counterweight and balance degree measurement on the initial special-shaped curved wing until the initial special-shaped curved wing meets the requirement of the balance degree, so as to obtain the formed special-shaped curved wing.
7. The full-closed cavity type special-shaped curved wing forming device according to claim 6, wherein the connecting module comprises:
the first welding sub-module is used for welding the connection positions among the outer frame, the inner ribs and the mask plate in a symmetrical welding mode;
and the second welding sub-module is used for welding the last mask plate with the inner rib in a plug welding mode.
8. The fully-enclosed cavity-type special-shaped curved wing forming device according to any one of claims 6 to 7, wherein:
the current range adopted in the assembly welding is 170A-180A.
9. The full-closed cavity type special-shaped curved surface wing forming device according to claim 6, wherein the forming module comprises:
the outer frame forming submodule is used for assembling and welding a plurality of parts into the outer frame, and machining allowance is reserved on the outer shape of the outer frame;
the inner rib forming sub-module is used for cutting and forming the inner rib by using a plate material;
and the mask forming sub-module is used for pressing and forming the mask by adopting a plate.
10. The full-closed cavity type special-shaped curved wing forming device according to claim 6, wherein the balance detection module comprises:
the cleaning submodule is used for cleaning the initial special-shaped curved wing;
the first balance degree measurement submodule is used for measuring the balance degree of the initial special-shaped curved wing to obtain a first balance degree;
the counterweight calculation operator module is used for calculating the counterweight required by the initial special-shaped curved wing according to the first balance degree and the standard balance degree;
the lead filling weight sub-module is used for filling lead into the initial special-shaped curved wing according to the weight;
the second balance measurement submodule is used for measuring the balance of the initial special-shaped curved wing after lead filling and weight balancing to obtain second balance;
the judging sub-module is used for completing the counterweight to obtain the shaped special-shaped curved wing if the second counterweight reaches the standard counterweight; if the second balance degree does not reach the standard balance degree, continuously calculating the required weight until the balance degree of the special-shaped curved wing reaches the standard balance degree.
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