CN107310242A - A kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal - Google Patents
A kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal Download PDFInfo
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- CN107310242A CN107310242A CN201710590020.2A CN201710590020A CN107310242A CN 107310242 A CN107310242 A CN 107310242A CN 201710590020 A CN201710590020 A CN 201710590020A CN 107310242 A CN107310242 A CN 107310242A
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- upper roller
- flexible
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- lower roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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Abstract
The invention discloses a kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal, including rigid upper roller (1), flexible media lower roll (2), flexible media lower roll (2) is flexible material, rigid upper roller (1) is rigid material, rigid upper roller (1) can active rotation, and can realize that active is moved up and down, the gap of sheet material (3) feeding between the two, rigid upper roller (1) is pressed on flexible media lower roll (2), flexible media lower roll (2) is driven passively to rotate, sheet material (3) obtains shaping curvature part between rigid upper roller (1) and flexible media lower roll (2) after roll bending.Exploitativeness of the present invention is strong, and forming accuracy and forming quality are high, and rebound phenomenon is smaller, and residual stress distribution is uniform, with important engineering application value.
Description
Technical field
The invention belongs to the forming technique field of advanced composite material, more particularly to a kind of super hybrid composite manner of fiber metal
The flexible roll forming method of laminate.
Background technology
Compared with traditional single metal material, composite has high ratio modulus, high specific strength, excellent heat resistance
The advantages of with anti-fatigue performance and outstanding designability, but there is also shock resistance damage performance is poor, ductility is poor simultaneously
And cost it is high the shortcomings of.Consider the respective advantage of both materials, a kind of super hybrid composite manner material of new fiber metal
Material is obtaining extensive concern in the industry.The super hybrid composite manner laminate of fiber metal is that one kind (is generally aluminium alloy by sheet metal
Or titanium alloy etc.) and fiber-reinforced resin matrix compound material alternating laying after, be prepared from according to vacuum hotpressing curing process
Interlayer assorted fibre composite layered plate.These advantages cause such material to be obtained a wide range of applications in aerospace industry,
And there is very big application potential quality in track traffic, automobile and other industrial circles.
The super hybrid composite manner laminate of fiber metal is due to the presence of fibrous layer, without excellent shaping such as sheet metal
Performance, but this limited forming property is enough for forming aircraft structure (such as skinpiston, longeron).
The shaping of fiber metal superhybrid composite component typically has two thinkings, i.e., before hot-press solidifying or while solidification,
Shape target shape；Or for GLARE flat boards prepared by autoclave, carry out its post forming.
According to the first thinking, Univ Delft Tech propose it is so-called from forming technique, and by its extensive use
In the shaping of airframe, wing wallboard superhybrid composite component.It is to surpass fiber metal to mix again from forming technique
Condensation material paving, solidification of hot-press tank in the mould with target shape size, with while prepared by material i.e. acquisition have song
The shape of rate.However, being only capable of manufacturing the less single-curvature component of curvature from shaping, it is impossible to shape more complicated hyperbolicity or more bent
Rate component；Meanwhile, the technique need to be formed while material solidification of hot-press tank, and the flexibility that it is formed is small, mould
Cost is high.Moreover, from the resilience problem of forming technology significantly, need to carry out it is empirical repair a die repeatedly, increase Making mold
Cost.
Except from forming technique, more research also focuses on fiber metal superhybrid composite in the autoclave system of completion
Post forming method after standby；But because the failure strain of fiber is small, cause the forming limit of material to be much smaller than corresponding metal
Material, and be easy to produce interlaminar failure, shaping difficulty is big.
The content of the invention
For above-mentioned problem, the present invention is intended to provide a kind of flexible rolling of the super hybrid composite manner laminate of fiber metal
O ing apparatus and method, this method is a kind of the advanced manufacture work of metal plate and section bar part can be bent on single equipment
Skill, it combines the punching press advantage and traditional roll bending method of application elastic fluid, substantially increases the shaping essence of part
Degree and forming quality.Shaping for such composite single-curvature, hyperbolicity component provides effective solution, can meet
Active demand of the Aeronautics and Astronautics industry to such composite large scale complex component.
To achieve these goals, the technical solution adopted in the present invention is as follows：
A kind of flexible roll forming device of the super hybrid composite manner laminate of fiber metal, including rigid upper roller (1), flexible Jie
Matter lower roll (2), flexible media lower roll (2) is flexible material, and rigid upper roller (1) is rigid material, and rigid upper roller (1) can actively revolve
Turn, and can realize that active is moved up and down, the gap of sheet material (3) feeding between the two, rigid upper roller (1) is pressed under flexible media
On roller (2), flexible media lower roll (2) is driven passively to rotate, sheet material (3) is between rigid upper roller (1) and flexible media lower roll (2)
Obtain shaping curvature part after roll bending.
Described flexible roll forming device, the material of flexible media lower roll is polyurethane rubber.
The method that described flexible roll forming device is formed, comprises the following steps：
1) cut：The super hybrid composite manner laminate of fiber metal is cut to target size；
2) bending roll machine technological parameter is set：Suitable flexible media lower roll and rigid upper roller disk roller radius size are chosen, with
Just roll forming can fast and effeciently be carried out；The ratio between flexible media lower roll and rigid upper roller disk roller radius are 2:1-5:1；
3) roll forming：The rational rigid upper roller volume under pressure of selection, bends to the super hybrid composite manner laminate of fiber metal
Shaping.
Described method, the step 3) in：According to the failure strain of Fiber Reinforced Metal Laminates, choosing volume under pressure is respectively
2mm, 4mm, 6mm, 8mm, 10mm, 12mm carry out roll forming；Then carry out step 4), step 5)：
4) failure and curvature measuring：Component formed thereby is damaged and bent by scanning electron microscope sem and cubing respectively
Rate is tested and analyzed；
5) obtain effectively shaping curvature：By observing micro interface degree of impairment, critical upper roller volume under pressure is judged, from
And obtain effectively shaping curvature.
Described method, the super hybrid composite manner laminate of fiber metal is the layer that fibrous material replaces laying solidify afterwards with metal
The composite of shape structure.
Described method, layered mechanism characteristicses are 3/2 structure, 4/3 structure, 5/4 structure and 6/5 structure, wherein, the
One numeral represents the number of plies of metal level, and second digit represents the number of plies of fibrous layer.
Described method, the step 1) method of cutting out be milling or Water Cutting.
The beneficial effects of the invention are as follows：Compared with prior art, the beneficial effects of the present invention are:
1st, the invention provides a kind of flexible bending manufacturing process for being directed to the super hybrid composite manner laminate of fiber metal, show
Write the production cost for reducing other Plastic Forming in terms of mould is processed, repaired a die repeatedly；Its process flexibility is strong, component chi
It is very little not limited by specification of equipment, efficiently solve the shaping problem of the large-size components such as large aircraft wing.
2nd, the balanced action shape of the invention based on the intrinsic residual stress of fiber metal superhybrid composite and bending stress
Into deformation, the shortcoming for being only capable of shaping single-curvature component from forming technique, traditional roll forming technology is overcome, is that fibre metal surpasses
The figuration manufacture of the complicated double-curvature component of hybrid composite provides effective solution.
3rd, proprietary spy of the super hybrid composite manner laminate of binding fiber-metal of the present invention in terms of failure behaviour and damage check
Levy, measurement and the interface damage with regard to differing formed curvature part have been carried out with regard to corresponding laminate shaping curvature under different volumes under pressure respectively
Condition of the injury condition has carried out observation analysis, with important theory directive significance.
4th, exploitativeness of the present invention is strong, and forming accuracy and forming quality are high, and rebound phenomenon is smaller, and residual stress distribution is equal
It is even, with important engineering application value.
Brief description of the drawings
Fig. 1 is flexible roll forming process route chart of the invention；
Fig. 2 is flexible roll forming installation drawing of the invention；
The super hybrid composite manner laminate section SEM figures of glass fibre-aluminium alloy of the structures of Fig. 3 3/2；
The super hybrid composite manner laminate section SEM figures of carbon fiber-titanium alloy of the structures of Fig. 4 3/2；
The super hybrid composite manner laminate section SEM figures of carbon fiber-titanium alloy of the structures of Fig. 5 3/2；
1- rigidity upper rollers, 2- flexible media lower rolls, 3- sheet materials.Wherein, rigid upper roller can active rotation, flexible media lower roll
Material is polyurethane rubber, and achievable active is moved up and down and passively rotated, and sheet material is from left side both gaps of feeding, and right side is incited somebody to action
To shaping curvature part；
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1：Referring to the drawings a kind of flexible roll forming method of the super hybrid composite manner laminate of fiber metal shown in 1,
Comprise the following steps：
The first step, chooses 3/2 structure that thickness is 1.4mm, and fiber laying direction is 0 °/0 ° of glass fibre-aluminium alloy
Super hybrid composite manner laminate, specific material component is S4 high-strength glass fibres, epoxy resin, 2024 aluminium alloys.
Second step, by digital control milling processing mode by the material cutting to 30mm × 300mm, specific milling technology parameter
For：Rotating speed 14000r/min, feed speed 2m/min, back engagement of the cutting edge 0.1mm, tool diameter 1mm, oil cooling.
3rd step, adjusts the specific process parameter of bending roll machine, and the super hybrid composite manner laminate of glass fibre-aluminium alloy is placed
Between disk roller up and down.
4th step, it is 10mm to choose rigid upper roller volume under pressure, and roller speed is 2000r/min, and roll bending is carried out to the material
Shaping.Glass is finally obtained by the collective effect of frictional force between the compression and flexible media lower roll and sheet material of rigid upper roller
The curvature component of fiber-aluminium alloy superhybrid composite.
5th step, is carried out by scanning electron microscope sem to the glass fibre after roll forming-aluminium alloy superhybrid composite
Failure conditions are checked, and use the curvature of three-coordinates measuring machine test member.
Experimental result：Rolled for 0 °/0 ° of the super hybrid composite manner laminate of glass fibre-aluminium alloy in 3/2 structure, fiber laying direction
Curved rear section is not fig. 3, it is shown that interface is layered, and fiber is with matrix without obvious failure.The radius of curvature of component is
197.42mm。
Embodiment 2
The first step, chooses 3/2 structure that thickness is 1.7mm, and fiber laying direction surpasses for 0 °/0 ° of carbon fiber-titanium alloy
Hybrid composite, specific material component is T700 carbon fibers, polyimide resin, TC4 aluminium alloys.
Second step, by digital control milling processing mode, by the material cutting to 30mm × 300mm.Specific process parameter is：
Rotating speed 10000r/min, feed speed 1m/min, back engagement of the cutting edge 0.1mm, tool diameter 2mm, water cooling.
3rd step, adjusts the specific process parameter of bending roll machine, and the super hybrid composite manner laminate of glass fibre-aluminium alloy is placed
Between disk roller up and down.
4th step, it is 8mm to choose rigid upper roller volume under pressure, and roller speed is 1000r/min, the material is carried out roll bending into
Shape.Glass fibers are finally obtained by the collective effect of frictional force between the compression and flexible media lower roll and sheet material of rigid upper roller
The curvature component of dimension-aluminium alloy superhybrid composite.
5th step, is carried out by scanning electron microscope sem to the glass fibre after roll forming-aluminium alloy superhybrid composite
Failure conditions are checked, and use the curvature of three-coordinates measuring machine test member.
Experimental result：3/2 structure, fiber laying direction is 0 °/0 ° of carbon fiber-titanium alloy superhybrid composite roll bending
Section is as shown in Figure 4 afterwards, it can be seen that interface is not layered, and fiber is with matrix without obvious failure.The radius of curvature of component is
250.53mm。
Embodiment 3
The first step, chooses 3/2 structure that thickness is 1.7mm, and fiber laying direction surpasses for 0 °/0 ° of carbon fiber-aluminium alloy
Hybrid composite, specific material component is T300 carbon fibers, acrylic resin, 7075 aluminium alloys.
Second step, by Water Cutting processing mode, by the material cutting to 30mm × 300mm.
3rd step, adjusts the specific process parameter of bending roll machine, and the super hybrid composite manner laminate of glass fibre-aluminium alloy is placed
Between disk roller up and down.
4th step, it is 10mm to choose rigid upper roller volume under pressure, and roller speed is 2000r/min, and roll bending is carried out to the material
Shaping.Glass is finally obtained by the collective effect of frictional force between the compression and flexible media lower roll and sheet material of rigid upper roller
The curvature component of fiber-aluminium alloy superhybrid composite.
5th step, is carried out by scanning electron microscope sem to the glass fibre after roll forming-aluminium alloy superhybrid composite
Failure conditions are checked, and use the curvature of three-coordinates measuring machine test member.
Experimental result：3/2 structure, fiber laying direction is 0 °/0 ° of carbon fiber-titanium alloy superhybrid composite roll bending
Section is as shown in Figure 5 afterwards, it can be seen that interface is not layered, and fiber is with matrix without obvious failure.The radius of curvature of component is
267.49mm。
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (7)
1. a kind of flexible roll forming device of the super hybrid composite manner laminate of fiber metal, it is characterised in that including rigid upper roller
(1), flexible media lower roll (2), flexible media lower roll (2) is flexible material, and rigid upper roller (1) is rigid material, rigid upper roller
(1) can active rotation, and can realize and actively move up and down, sheet material (3) feeding gap between the two, rigid upper roller (1) is pressed
On flexible media lower roll (2), flexible media lower roll (2) is driven passively to rotate, sheet material (3) is in rigid upper roller (1) and flexible Jie
Obtain shaping curvature part after roll bending between matter lower roll (2).
2. flexible roll forming device according to claim 1, it is characterised in that the material of flexible media lower roll is poly- ammonia
Ester rubber.
3. the method that flexible roll forming device according to claim 1 or 2 is formed, it is characterised in that including with
Lower step：
1) cut：The super hybrid composite manner laminate of fiber metal is cut to target size；
2) bending roll machine technological parameter is set：Suitable flexible media lower roll and rigid upper roller disk roller radius size are chosen, so as to can
Fast and effeciently to carry out roll forming；The ratio between flexible media lower roll and rigid upper roller disk roller radius are 2:1-5:1；
3) roll forming：The rational rigid upper roller volume under pressure of selection, bends to the super hybrid composite manner laminate of fiber metal
Shape.
4. method according to claim 3, it is characterised in that the step 3) in：According to the destruction of Fiber Reinforced Metal Laminates
Strain, it is respectively 2mm to choose volume under pressure, and 4mm, 6mm, 8mm, 10mm, 12mm carries out roll forming；Then carry out step 4), step
It is rapid 5)：
4) failure and curvature measuring：Component formed thereby is damaged and curvature inspection by scanning electron microscope sem and cubing respectively
Survey analysis；
5) obtain effectively shaping curvature：By observing micro interface degree of impairment, critical upper roller volume under pressure is judged, so that
To effective shaping curvature.
5. method according to claim 3, it is characterised in that：The super hybrid composite manner laminate of fiber metal be fibrous material with
The composite of the layer structure of metal alternating laying solidify afterwards.
6. method according to claim 3, it is characterised in that：Layered mechanism characteristicses are 3/2 structure, 4/3 structure, 5/
4 structures and 6/5 structure, wherein, first digit represents the number of plies of metal level, and second digit represents the number of plies of fibrous layer.
7. method according to claim 3, it is characterised in that：The step 1) method of cutting out be milling or Water Cutting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710590020.2A CN107310242A (en) | 2017-07-19 | 2017-07-19 | A kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710590020.2A CN107310242A (en) | 2017-07-19 | 2017-07-19 | A kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal |
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| CN107310242A true CN107310242A (en) | 2017-11-03 |
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| CN201710590020.2A Pending CN107310242A (en) | 2017-07-19 | 2017-07-19 | A kind of flexible roll forming apparatus and method of the super hybrid composite manner laminate of fibre metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118194479A (en) * | 2024-05-16 | 2024-06-14 | 西安理工大学 | Method for optimizing bending resilience of aluminum product in roll bending forming |
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|---|---|---|---|---|
| CN2728668Y (en) * | 2004-10-20 | 2005-09-28 | 南京航空航天大学 | Bishaft flexible roller bending machine controlled by feeding |
| CN104249096A (en) * | 2013-06-28 | 2014-12-31 | 南通超力卷板机制造有限公司 | Numerical control flexible roll bending two-roller plate bending machine for small-diameter barrel |
| CN106626715A (en) * | 2017-01-23 | 2017-05-10 | 南京工程学院 | Mechanical shot peening forming and strengthening method of fiber-metal super-hybrid composite laminated sheet |
-
2017
- 2017-07-19 CN CN201710590020.2A patent/CN107310242A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2728668Y (en) * | 2004-10-20 | 2005-09-28 | 南京航空航天大学 | Bishaft flexible roller bending machine controlled by feeding |
| CN104249096A (en) * | 2013-06-28 | 2014-12-31 | 南通超力卷板机制造有限公司 | Numerical control flexible roll bending two-roller plate bending machine for small-diameter barrel |
| CN106626715A (en) * | 2017-01-23 | 2017-05-10 | 南京工程学院 | Mechanical shot peening forming and strengthening method of fiber-metal super-hybrid composite laminated sheet |
Non-Patent Citations (2)
| Title |
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| 余国庆等: "基于有限元分析的二轴柔性滚弯过程影响因素的研究", 《机械科学与技术》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118194479A (en) * | 2024-05-16 | 2024-06-14 | 西安理工大学 | Method for optimizing bending resilience of aluminum product in roll bending forming |
| CN118194479B (en) * | 2024-05-16 | 2024-08-16 | 西安理工大学 | Method for optimizing bending resilience of aluminum product in roll bending forming |
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Application publication date: 20171103 |