CN106881570A - A kind of manufacture method of the circular arc with muscle covering - Google Patents
A kind of manufacture method of the circular arc with muscle covering Download PDFInfo
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- CN106881570A CN106881570A CN201710161405.7A CN201710161405A CN106881570A CN 106881570 A CN106881570 A CN 106881570A CN 201710161405 A CN201710161405 A CN 201710161405A CN 106881570 A CN106881570 A CN 106881570A
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- Prior art keywords
- covering
- muscle
- circular arc
- thickness
- groove
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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
Abstract
A kind of manufacture method of the circular arc with muscle covering, by using with skin material identical thin plate, thin plate is processed into identical with covering groove shapes, the thickness auxiliary process backing plate consistent with depth of groove, technique backing plate is filled in the groove of covering rib side, the plate construction of consistency of thickness is made, the method for recycling plates forming equipment or mould to be processed.By using this method, the plate construction for transforming into consistency of thickness with muscle covering class formation part that variable thickness is caused is processed, can avoided because part thickness is inconsistent, the projection in brake forming at rib can obtain good processability and outward appearance.
Description
Technical field
The present invention relates to a kind of manufacture method of the circular arc with muscle covering, the present invention relates to be machined and panel beating skill
Art field, more particularly to a kind of manufacture method that covering is bent with muscle.
Background technology
Band muscle covering has the advantages that intensity is high, rigidity is high, overall performance is good, light weight, is widely used in rocket
In the parts such as the wing and fuel tank of shell, fuel tank and aircraft.Due to its complex structure, comprising the knot such as reinforcement, boss
Structure, section thickness is inconsistent, therefore processing and manufacturing Technical comparing is complicated, and the production cycle is long.Current domestic main bending covering
Manufacture method have contour peening, creep ageing shaping, laser formation, circle circle shaping etc..Wherein, contour peening and creep ageing
Shaping is current most widely used technology, and laser forming is a new study hotspot.Circle circle shaping belong to pressure processing into
Shape, is traditional forming technique.Centre circle sired results skill is simple to operate, production efficiency is high for its, low production cost, equipment simple, occupation of land
Area is small, is adapted to shaping single-curvature cylindrical member and Tapered Cup.The processing and forming of wallboard such as covering is bent with muscle, is then above-mentioned
On the bending wallboard that method is processed, five-axle number control machine tool machining and the technique of milling are carried out, processed crisscross
The rib of truss structure.Wherein Digit Control Machine Tool processing, because clamping difficulty is big, the features such as part is yielding, be unfavorable for thickness compared with
The processing of thin bending wallboard rib；Metal parts is exactly cleaned oil removing by the technique of milling, and coating on the surface can be resisted
The protective strip coating of etchant solution effect, carries out quarter shape after room temperature or hot setting.To be coated on needs milling to process
The protective coating at position is peelled off, and then in part immersion etchant solution, corrosion processing is carried out to exposed surface.This technique
Limitation be：Always there are a radius and corrosion processing depth fillet about the same in chemistry milling rib root out；It is rotten
Erosion solution while to deep erosions will also to side etch, therefore can only working width more than twice depth groove.This
Outward, milling often reproduces or expands the defects such as the original cut of blank surface, pit on corrosion processing face.Work as corrosion processing
During the internal flaw of depth arrival casting or weld seam, also these defects can be retained in finished surface.
Therefore, the difficulty of processing that skin part is bent with muscle how is reduced, manufacturing cost is reduced, processing efficiency is improved, into
It is those skilled in the art's urgent problem.
The content of the invention
Present invention solves the technical problem that being：Overcome prior art not enough, there is provided a kind of manufacture circular arc is with muscle covering
Method, mainly solves band muscle bending covering class formation difficulty of processing is big, the process-cycle is long, processing efficiency is low, equipment is complicated etc.
Problem.
The present invention solve technical scheme be：A kind of manufacture method of the circular arc with muscle covering, step is as follows：
(1) size of the circular arc for shaping as needed with muscle covering, the flat board of selection thickness 2mm thicker than desired size is made
It is raw material, the flat panel contours size of selection is than needing the developed dimension of the circular arc with muscle covering of shaping big by 10%；Flat board
The preferred 5A06 aluminium alloys of raw material, are 5A06-H112 states, and tensile strength is preferably 315MPa；
(2) neutral line of the circular arc for shaping as required with muscle covering is launched, in the flat board that step (1) chooses
Reinforcement of the circular arc with muscle covering and covering side that side shapes the need for processing planar development state, between reinforcement
Form covering groove；Neutral line refers to the cross-sectional layers at the 40~50% of material thickness, preferred scheme for material thickness 46~
Cross-sectional layers at 48%；
(3) by using, thickness identical with skin material and covering depth of groove identical sheet material, by the sheet fabrication into
Matched with covering groove shapes, the thickness thin-slab structure consistent with covering depth of groove, i.e. auxiliary process backing plate；
(4) filling of step (3) auxiliary process backing plate is fixed in the groove of the planar band muscle covering of step (2) acquisition,
Make the consistency of thickness everywhere of covering, then the covering after filling is manually bent by processing by the method for panel beating；
(5) covering after being processed to step (4) brake forming is corrected shape；
(6) covering after the shape of step (5) school is heat-treated, the residual stress of removal circle circle；
(7) auxiliary process backing plate is removed, again school shape, the band muscle stressed-skin construction of the bending required for obtaining needs into
The circular arc band muscle covering of shape.
Selected flat board is aluminium alloy or carbon steel.
The mode for processing the reinforcement of needs in step (2) in the flat board side for choosing is plane milling processing mode.
The method of step (4) panel beating is the covering brake forming after enclosing circular knitting machine to make filling.
Heat treatment temperature is 250~350 DEG C in step (6).
Present invention advantage compared with prior art is：
(1) present invention using reverse processing thinking, will bending covering process is counter is pushed away, its advantage is to adopt
Completed to bend the processing of covering with muscle with intuitively method, be easy to operation.
(2) processing cost is low, and technique backing plate is repeatable to be utilized, and processing capacity is few, high in machining efficiency.
(3) compared to overall digital control processing, it is not necessary to special frock clamp, in the absence of machine plus residual stress, especially
Thin-walled parts are not allowed yielding.
(4) this programme can amplify the processing and manufacturing for being applied to other similar skin parts with truss bead structures.
Brief description of the drawings
Fig. 1 is the deployed condition that the present invention bends covering with muscle；
Fig. 2 is that the backing plate of present invention processing is filled into schematic diagram in the flattening wallboard of Fig. 1 processing；
Fig. 3 is that the covering of populated backing plate of the invention carries out the schematic diagram that circle circle processes arc surface；
Fig. 4 is the part of circle circle shaping after present invention filling backing plate；
Fig. 5 is the final forming effect schematic diagram of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention propose it is a kind of manufacture method of the circular arc with muscle covering, by using with skin material identical thin plate,
Thin plate is processed into, thickness with depth of groove consistent auxiliary process backing plate identical with covering groove shapes, technique backing plate is filled out
Fill in the groove of covering rib side, make the plate construction of consistency of thickness, recycle plates forming equipment or mould
The method being processed.By using this method, the band muscle covering class formation part that variable thickness is caused is transformed into thickness
Consistent plate construction is processed, and can avoid because part thickness is inconsistent, and the projection in brake forming at rib can be obtained
Obtain processability and outward appearance well.
The present invention needs the circular arc band muscle covering arc of shaping, there is alternate reinforcement anyhow on the side of arc
Muscle, the opposite side of arc is smooth surface, as shown in Figure 5.
Core of the invention is to provide a kind of manufacture method that covering is bent with muscle, can be reduced compared with conventional method
Difficulty of processing, reduces producing cost, improves processing efficiency.In order that those skilled in the art more fully understand skill of the invention
Art scheme, the present invention is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, Fig. 1 is the deployed condition that covering is bent with muscle.Imagination is flattened the covering bent with muscle, just
A wallboard with truss bead structures in length and breadth is obtained, there are groove and bead structures above this wallboard.The broad-ruler of wallboard
Very little consistent with the axial length of covering, the length dimension of wallboard is the neutral line size of covering, i.e. material in BENDING PROCESS,
Outer layer Tensile, internal layer is squeezed, and a neither tension, and the transition zone not being pressurized are necessarily had on its section, and stress is several
Zero is equal to, this transition zone is referred to as the neutral line of material.Neutral line as before bending, keeps in the length in BENDING PROCESS
It is constant.Model after expansion can be processed with Digit Control Machine Tool, obtain good appearance and size, and can guarantee that required precision.Cover
The groove and bead structures of intracutaneous side also can be processed directly on wallboard with Digit Control Machine Tool.It is pointed out that wallboard is passed through
Can there is residual stress after over mechanical processing, residual stress can be removed by heat treatment such as annealing, timeliness etc., in order to avoid after influence
The circle circle processing in face.
As shown in Fig. 2 the backing plate that Fig. 2 is processing is filled into the flattening wallboard of Fig. 1 processing.The material and illiteracy of backing plate in figure
The material of skin wallboard is identical, because identical material has identical mechanical property and characteristic, in follow-up bending machining
An integral panel can be equivalent to, the type face after processing will not be convex because of the inconsistent rib back side caused of rib and skin thickness
Rise.
The shape of backing plate is identical with the shape of wallboard groove, and preferred profile size is the 95% of groove size, makes filling, consolidates
It is not easily taken out because of deformation after determining and preventing processing.The thickness of backing plate is consistent with covering depth of groove.Fixed method can be with
Using adhesive tape and seccotine etc., it is necessary to ensure firm in a groove, do not fallen out in the bending machining whole process below,
And school shape is also required to use after bending machining.
As shown in figure 3, Fig. 3 is that the covering of populated backing plate is carried out into the schematic diagram that circle circle processes arc surface.Circle is justified into
During shape, two lower rolls are active drive rollers, are driven by motor and rotated；As shown in figure 3, above arc being upper roller, arc
Following two are lower roll, and upper roller moves vertically within the specific limits, and the diameter range of upper roller is 90~Φ of Φ 200, enters one
Step is preferably 120~Φ of Φ 150, and wallboard is acted on by frictional force and passively rotated in forming process.In three disk roller active forces and
In the presence of frictional force, moiety simultaneously produces plastic deformation, is gradually curved, and is finally configured to the workpiece of iso-curvature.Integral wall
If the direct roll forming of plate, because wall panel configurations are irregular, rib is high and wall is thin, in the case of three disk roller imposed loads,
Flexing unstable phenomenon is susceptible at rib；And skin-surface circular arc is rough continuous, and obvious projection can be produced at rib, because
Wallboard after this shaping can not meet use requirement.Can improve the stress of rib in inside grooves packing material identical backing plate
Situation, improves the forming property of wallboard.
As shown in figure 4, Fig. 4 is to enclose the part that circle is molded after filling backing plate.Herein it should be noted that through circle circle after,
The radius and desired size of covering bending are close but incomplete same, it is necessary to be obtained with reference to being corrected shape after annealing heat-treats
The part of desired size.The preferable temperature of heat treatment is 300 DEG C~350 DEG C, and heat treatment time is 60~80 minutes, further
Preferably at 310 DEG C~330 DEG C, it is possible to increase the plasticity of material.
The present invention also has a kind of preferred scheme：Can increase annealing after method and step (2) processes the groove of flat board
Stress is heat-treated, and so can obtain good processing effect when subsequent step (4) is carried out and encloses circle processing, and mitigate school shape
Workload.
The present invention also has a kind of preferred scheme：The circle circle processing of step (4) can roll round method with numerical control bender, fit
For processing the thicker band muscle covering that can not justify processing with circle circular knitting machine circle of thickness.
The present invention also has a kind of preferred scheme：The backing plate combination of step (3) middle different-thickness, makes the thickness after combination
It is consistent with depth of groove.
Technique effect of the invention, by test, machined 10, and the Line contour degree tolerance of external surface can reach 0.03
Within precision., bending method of the invention has been used in the processing of the exterior skin for processing certain aircraft fuel tank, achieves good
Effect.
Non-elaborated part of the present invention belongs to techniques well known.
Claims (5)
1. it is a kind of to manufacture method of the circular arc with muscle covering, it is characterised in that step is as follows：
(1) size of the circular arc for shaping as needed with muscle covering, the flat board of selection thickness 2mm thicker than desired size is used as original
Material, the flat panel contours size of selection is than needing the developed dimension of the circular arc with muscle covering of shaping big by 10%；
(2) neutral line of the circular arc for shaping as required with muscle covering is launched, in the flat board side that step (1) chooses
Reinforcement of the circular arc with muscle covering and covering side shaped the need for processing planar development state, forms between reinforcement
Covering groove；
(3) by using, thickness identical with skin material and covering depth of groove identical sheet material, by sheet fabrication Cheng Yumeng
Skin groove shapes are matched, the thickness thin-slab structure consistent with covering depth of groove, i.e. auxiliary process backing plate；
(4) filling of step (3) auxiliary process backing plate is fixed in the groove of the planar band muscle covering of step (2) acquisition, makes illiteracy
The consistency of thickness everywhere of skin, then the covering after filling is manually bent by processing by the method for panel beating；
(5) covering after being processed to step (4) brake forming is corrected shape；
(6) covering after the shape of step (5) school is heat-treated, the residual stress of removal circle circle；
(7) auxiliary process backing plate is removed, again school shape, the band muscle stressed-skin construction of the bending required for obtaining needs shaping
Circular arc band muscle covering.
2. it is according to claim 1 it is a kind of with muscle bend covering forming method, it is characterised in that：Selected flat board is
Aluminium alloy or carbon steel.
3. it is according to claim 1 it is a kind of with muscle bend covering forming method, it is characterised in that：In choosing in step (2)
The mode that the flat board side selected processes the reinforcement of needs is plane milling processing mode.
4. it is according to claim 1 it is a kind of with muscle bend covering forming method, it is characterised in that：Step (4) metal plate adds
The method of work is the covering brake forming after enclosing circular knitting machine to make filling.
5. it is according to claim 1 it is a kind of with muscle bend covering forming method, it is characterised in that：In step (6) at heat
Reason temperature is 250~350 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161405.7A CN106881570A (en) | 2017-03-17 | 2017-03-17 | A kind of manufacture method of the circular arc with muscle covering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161405.7A CN106881570A (en) | 2017-03-17 | 2017-03-17 | A kind of manufacture method of the circular arc with muscle covering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106881570A true CN106881570A (en) | 2017-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710161405.7A Pending CN106881570A (en) | 2017-03-17 | 2017-03-17 | A kind of manufacture method of the circular arc with muscle covering |
Country Status (1)
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| CN (1) | CN106881570A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788560A (en) * | 2018-08-01 | 2020-02-14 | 中国商用飞机有限责任公司 | Manufacturing method of variable-thickness plate, variable-thickness plate and aviation equipment |
| CN113275664A (en) * | 2021-05-27 | 2021-08-20 | 广船国际有限公司 | Panel processing method |
| CN113365754A (en) * | 2019-01-15 | 2021-09-07 | 德哈德有限公司 | Method and apparatus for changing the shape of a plate-shaped workpiece |
| CN113579015A (en) * | 2020-04-30 | 2021-11-02 | 中国商用飞机有限责任公司 | Processing method of variable-thickness thin-wall component |
| CN115091129A (en) * | 2022-06-22 | 2022-09-23 | 四川航天长征装备制造有限公司 | Roll bending and shape correcting process method for aluminum alloy wall plate |
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| GB719107A (en) * | 1951-04-05 | 1954-11-24 | Uniprint Ges Fuer Neue Druckve | Improvements in the preparation of intaglio printing plates |
| GB1496519A (en) * | 1975-10-08 | 1977-12-30 | British Aircraft Corp Ltd | Aircraft wings |
| CN102974671A (en) * | 2012-11-28 | 2013-03-20 | 上海飞机制造有限公司 | Rolling forming method of metal plate component |
| CN103530448A (en) * | 2013-09-27 | 2014-01-22 | 天津大学 | Method for selecting packing for roll bending of integral panel based on finite element analysis |
| CN105665488A (en) * | 2016-02-25 | 2016-06-15 | 成都飞机工业（集团）有限责任公司 | Controlling method for residual stress on outer surface of roll bending skin |
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2017
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Patent Citations (5)
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| GB719107A (en) * | 1951-04-05 | 1954-11-24 | Uniprint Ges Fuer Neue Druckve | Improvements in the preparation of intaglio printing plates |
| GB1496519A (en) * | 1975-10-08 | 1977-12-30 | British Aircraft Corp Ltd | Aircraft wings |
| CN102974671A (en) * | 2012-11-28 | 2013-03-20 | 上海飞机制造有限公司 | Rolling forming method of metal plate component |
| CN103530448A (en) * | 2013-09-27 | 2014-01-22 | 天津大学 | Method for selecting packing for roll bending of integral panel based on finite element analysis |
| CN105665488A (en) * | 2016-02-25 | 2016-06-15 | 成都飞机工业（集团）有限责任公司 | Controlling method for residual stress on outer surface of roll bending skin |
Non-Patent Citations (1)
| Title |
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| 张士宏等: "整体壁板填料滚弯成形工艺研究", 《锻压技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110788560A (en) * | 2018-08-01 | 2020-02-14 | 中国商用飞机有限责任公司 | Manufacturing method of variable-thickness plate, variable-thickness plate and aviation equipment |
| CN113365754A (en) * | 2019-01-15 | 2021-09-07 | 德哈德有限公司 | Method and apparatus for changing the shape of a plate-shaped workpiece |
| CN113579015A (en) * | 2020-04-30 | 2021-11-02 | 中国商用飞机有限责任公司 | Processing method of variable-thickness thin-wall component |
| CN113579015B (en) * | 2020-04-30 | 2022-12-06 | 中国商用飞机有限责任公司 | Processing method of variable-thickness thin-wall component |
| CN113275664A (en) * | 2021-05-27 | 2021-08-20 | 广船国际有限公司 | Panel processing method |
| CN115091129A (en) * | 2022-06-22 | 2022-09-23 | 四川航天长征装备制造有限公司 | Roll bending and shape correcting process method for aluminum alloy wall plate |
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Application publication date: 20170623 |