CN104626424A - Curing device and curing method of rotor blade adjustment sheet made from composite material - Google Patents
Curing device and curing method of rotor blade adjustment sheet made from composite material Download PDFInfo
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- CN104626424A CN104626424A CN201410822876.4A CN201410822876A CN104626424A CN 104626424 A CN104626424 A CN 104626424A CN 201410822876 A CN201410822876 A CN 201410822876A CN 104626424 A CN104626424 A CN 104626424A
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- trimmer
- blade
- rotor blade
- tank
- adjustment sheet
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Abstract
The invention discloses a curing device of a rotor blade adjustment sheet made from a composite material. The curing device comprises a water tank which is horizontally arranged, wherein a water channel is horizontally arranged in the water tank, a heater is arranged at the bottom of the water channel, and an adjustment sheet positioning tool is horizontally arranged at the upper end of the water channel in the water tank and comprises an upper clamping plate and a lower clamping plate which are arranged at the upper and lower ends; the upper clamping plate is connected with the lower clamping plate through a fastener; an adjustment sheet fixing groove is formed in the edge of each of upper and lower opposite faces of the upper and lower clamping plates along the length direction. The invention also provides a curing method of the rotor blade adjustment sheet made from the composite material. The curing device of the rotor blade adjustment sheet made from the composite material not only is simple in structure, convenient to operate, low in cost and long in service life, but also is convenient to position the adjustment sheet, does not waste space and saves electric energy. An existing integral heating curing method is improved to the local adjustment sheet heating curing method, so that the adjusting sheet is uniformly heated, rapid to cure, relatively good in consistency and stable in quality.
Description
Technical field
The present invention relates to the solidification equipment of rotor blade trimmer, specifically a kind of solidification equipment of composite rotor blade trimmer and curing thereof.
Background technology
Trimmer is used to the key structure adjusting helicopter composite material rotor blade aerodynamic hinge moment, by the air-balance regulating the angle of bend of trimmer to carry out trim blade.The trimmer be cured can not affect the aerofoil profile of blade, ensures again to facilitate bending adjusting angle.Composite material blade trimmer is all generally that after blade completes, carry out regelate again on blade bonding, in order to ensure the adhesive strength between trimmer and composite material blade, special compound adhesive is usually selected to be cured within specified temperatures bonding.
Existing curing is, after trimmer gluing also fixes with blade, full wafer blade is put into heating cure in electrothermal furnace, the method has a lot of shortcoming: 1. owing to solidifying with larger electrothermal furnace, need the hardening time taking other large products, sometimes then need to wait for that electric furnace could use time idle, inefficiency; 2. the method heats whole blade, and so often there will be composite material blade foam regions and to be heated inequality and damage of bubbling, thus cause whole blade to be scrapped, increase cost, crudy is unstable; 3. improve cost with electric furnace solidification, the trimmer of solidification one pair of blade needs to consume a large amount of electric power; 4. because blade has aerofoil profile, location and clamping there is certain difficulty, if trimmer solidify after inconsistent, easily cause the error of blade aerodynamic etc., increase dynamically balanced difficulty etc.
Summary of the invention
Technical problem to be solved by this invention is, for the shortcoming of above prior art, a kind of solidification equipment and curing thereof of composite rotor blade trimmer are proposed, not only structure is simple for the solidification equipment of this composite rotor blade trimmer, easy to operate, cost is low, long service life, and trimmer location is convenient, not wasting space, save electric energy, the existing entirety method of being heating and curing is improved to trimmer local heat solidification method, trimmer homogeneous heating, solidification fast, uniformity is better, steady quality, utilize this device to solidify trimmer both improve the production efficiency of composite rotor blade and reduced production cost, this curing provided, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product.
In order to solve the problems of the technologies described above, technical scheme of the present invention is achieved in the following ways: a kind of solidification equipment of composite rotor blade trimmer, solidification equipment comprises horizontally disposed water tank, tank is provided with in water tank inner horizontal, the bottom of tank is provided with heater, the upper end level being positioned at tank in water tank inside is provided with trimmer positioning tool, trimmer positioning tool comprises the train wheel bridge and lower plate that are arranged on upper and lower two ends, connected by securing member between train wheel bridge and lower plate, trimmer holddown groove is offered along its length in the edge of train wheel bridge and the upper and lower opposite face of lower plate.
Like this, not only structure is simple for the solidification equipment of this composite rotor blade trimmer, easy to operate, cost is low, long service life, and trimmer location is convenient, not wasting space, saves electric energy, the existing entirety method of being heating and curing is improved to trimmer local heat solidification method, trimmer homogeneous heating, solidification fast, uniformity better, steady quality, utilize this device to solidify trimmer and both improve the production efficiency of composite rotor blade and reduced production cost.
Present invention also offers a kind of curing of composite rotor blade trimmer, this curing carries out according to the following steps:
Step (1): the blade surface being first used for mounting and adjusting sheet with coarse sand polishing, then cleans blade surface with acetone, then sticks composite material skin at blade surface;
Step (2): cleaning trimmer holddown groove inner surface, dries rear coating release agent naturally;
Step (3): according to the size of blade, cuts out the size needed by alkali-free glass fibre twill, and is dipped in solidification glue;
Step (4): alkali-free glass fibre twill is affixed on the blade surface for mounting and adjusting sheet, and two panels trimmer is installed to blade upper and lower surface, then blade is arranged in trimmer holddown groove, remove exposed alkali-free glass fibre twill, and by fixing Wire pulling fixed blades;
Step (5): with the water in heater heating water tank, by the first thermometer monitoring water temperature, when water temperature reaches 80-90 DEG C during insulation, trimmer positioning tool is positioned over tank upper end, and compresses trimmer positioning tool, when the second thermometer displays temperature is at 74-80 DEG C with backing metal, keep 3-4h, then close heater, when the second thermometer displays temperature is less than 60 DEG C, can blade be taken out.
Like this, by rational curing, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product, easy to operate.
The technical scheme that the present invention limits further is:
The solidification equipment of aforesaid composite rotor blade trimmer, heater is electromagnetic oven, employing electromagnetic oven heating, and cost is low, simple to operate, and heating is convenient, and buys and change conveniently.
The solidification equipment of aforesaid composite rotor blade trimmer, the upper surface of water tank is provided with fixed block, fixed block is vertically arranged with the first thermometer for measuring water temperature in tank, the temperature of water in the first thermometer display tank, convenient monitoring and control, be conducive to operating personnel's operation.
The solidification equipment of aforesaid composite rotor blade trimmer, also alignment pin is provided with between train wheel bridge and lower plate, the first base is provided with along the both sides level of its width at lower plate, first base offers U-shaped elongated slot along its length, contiguous block is provided with at the two ends of U-shaped elongated slot, also screw mandrel is provided with between two contiguous blocks, contiguous block is also provided with the steel wire lock tightening nut that screw mandrel can be driven to rotate, screw mandrel is also provided with can along the movable block of screw mandrel length direction movement, movable block is positioned at U-shaped elongated slot opening direction and is provided with the first connector for being connected and fixed steel wire one end, the other end of fixing steel wire is connected with the second connector being arranged on train wheel bridge side, first connector and the second connector be arranged in parallel, fixing steel wire is used for fixed blades, this spline structure is simple, energy quick position blade, when ensureing solidification trimmer, blade does not move, ensure solidification quality.
The solidification equipment of aforesaid composite rotor blade trimmer, also backing metal is provided with in train wheel bridge upper surface, on backing metal, also direction is provided with the second thermometer along the horizontal plane, by the second thermometer can reflect solidification time trimmer temperature, such handled easily personnel regulate heater, thus control the solidification temperature of trimmer, use backing metal, can heat conduction efficiency be increased, increase accuracy and the reliability of the second thermometer Temperature displaying.
The invention has the beneficial effects as follows: not only structure is simple for the solidification equipment of this composite rotor blade trimmer, easy to operate, cost is low, long service life, and trimmer location is convenient, not wasting space, save electric energy, the existing entirety method of being heating and curing is improved to trimmer local heat solidification method, trimmer homogeneous heating, solidification fast, uniformity is better, steady quality, utilize this device to solidify trimmer both improve the production efficiency of composite rotor blade trimmer and reduced production cost, this curing provided, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product.
Accompanying drawing explanation
Fig. 1 is top view of the present invention;
Fig. 2 is the sectional view of the B-B in Fig. 1;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the partial view A in Fig. 2;
Fig. 5 is the front view of trimmer positioning tool in the present invention;
Fig. 6 is the top view of trimmer positioning tool in the present invention;
Fig. 7 is the structural representation of trimmer positioning tool in the present invention;
Wherein: 1-water tank, 2-tank, 3-heater, 4-train wheel bridge, 5-lower plate, 6-trimmer holddown groove, 7-trimmer, 8-fixed block, 9-first thermometer, 10-alignment pin, 11-first base, 12-blade, 13-U shape elongated slot, 14-contiguous block, 15-screw mandrel, 16-steel wire lock tightening nut, 17-movable block, 18-fixes steel wire, 19-first connector, 20-second connector, 21-backing metal, 22-second thermometer.
Detailed description of the invention
The present invention is described in further detail below:
embodiment 1
The present embodiment provides a kind of solidification equipment of composite rotor blade trimmer, solidification equipment comprises horizontally disposed water tank 1, it is characterized in that: be provided with tank 2 in water tank 1 inner horizontal, the bottom of tank 2 is provided with electromagnetic oven 3, the upper end level being positioned at tank 2 in water tank 1 inside is provided with trimmer positioning tool, trimmer positioning tool comprises the train wheel bridge 4 and lower plate 5 that are arranged on upper and lower two ends, connected by securing member between train wheel bridge 4 and lower plate 5, offer trimmer holddown groove 6 along its length in the edge of train wheel bridge 4 and lower plate about 5 opposite face; The upper surface of water tank 1 is provided with fixed block 8, fixed block 8 is vertically arranged with the first thermometer 9 for measuring water temperature in tank 2;
Alignment pin 10 is also provided with between train wheel bridge 4 and lower plate 5, the first base 11 is provided with along the both sides level of its width at lower plate 5, first base 11 offers U-shaped elongated slot 13 along its length, contiguous block 14 is provided with at the two ends of U-shaped elongated slot 13, screw mandrel 15 is also provided with between two contiguous blocks 14, contiguous block 14 is also provided with the steel wire lock tightening nut 16 that screw mandrel 15 can be driven to rotate, screw mandrel 15 is also provided with can along the movable block 17 of screw mandrel 15 length direction movement, movable block 17 is positioned at U-shaped elongated slot 13 opening direction and is provided with the first connector 19 for being connected and fixed steel wire 18 one end, the other end of fixing steel wire 18 is connected with the second connector 20 being arranged on train wheel bridge 4 side, first connector 19 and the second connector 20 be arranged in parallel, fixing steel wire 18 is for fixed blades 12, also be provided with backing metal 21 in train wheel bridge 4 upper surface, on backing metal 21, also direction is provided with the second thermometer 22 along the horizontal plane, this embodiment still provides the curing of composite rotor blade trimmer:
Step (1): the blade surface being first used for mounting and adjusting sheet 7 with coarse sand polishing, then cleans blade surface with acetone, then sticks composite material skin on blade 12 surface;
Step (2): cleaning trimmer holddown groove 6 inner surface, dries rear coating release agent naturally;
Step (3): according to the size of blade 12, cuts out the size needed by alkali-free glass fibre twill, and is dipped in solidification glue;
Step (4): alkali-free glass fibre twill is affixed on the blade surface for mounting and adjusting sheet 7, and two panels trimmer 7 is installed to blade upper and lower surface, then blade 12 is arranged in trimmer holddown groove 6, remove exposed alkali-free glass fibre twill, and to be strained and fixed blade 12 with fixing steel wire 18;
Step (5): with the water in heater 3 heating water tank 2, water temperature is monitored by the first thermometer 9, when being incubated when water temperature reaches 85 DEG C, trimmer positioning tool is positioned over tank 2 upper end, and compresses trimmer positioning tool with backing metal 21, when the second thermometer 22 displays temperature is at 76 DEG C, keep 3.5h, then close heater 3, when the second thermometer 22 displays temperature is less than 60 DEG C, blade 12 can be taken out.
Like this by the technical scheme of embodiment, not only structure is simple for the solidification equipment of this composite rotor blade trimmer, easy to operate, cost is low, long service life, and trimmer location is convenient, not wasting space, save electric energy, the existing entirety method of being heating and curing is improved to trimmer local heat solidification method, trimmer homogeneous heating, solidification fast, uniformity is better, steady quality, utilize this device to solidify trimmer both improve the production efficiency of composite rotor blade trimmer and reduced production cost, this curing provided, can not only cut down finished cost, shorten the process-cycle, and can increase work efficiency, improve the quality of product.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (6)
1. the solidification equipment of a composite rotor blade trimmer, described solidification equipment comprises horizontally disposed water tank (1), it is characterized in that: be provided with tank (2) in described water tank (1) inner horizontal, the bottom of described tank (2) is provided with heater (3), the upper end level being positioned at tank (2) in described water tank (1) inside is provided with trimmer positioning tool, described trimmer positioning tool comprises the train wheel bridge (4) and lower plate (5) that are arranged on upper and lower two ends, connected by securing member between described train wheel bridge (4) and lower plate (5), trimmer holddown groove (6) is offered along its length in the edge of described train wheel bridge (4) and the upper and lower opposite face of lower plate (5).
2. the solidification equipment of composite rotor blade trimmer according to claim 1, is characterized in that: described heater (3) is electromagnetic oven (3).
3. the solidification equipment of composite rotor blade trimmer according to claim 1, it is characterized in that: the upper surface of described water tank (1) is provided with fixed block (8), described fixed block (8) being vertically arranged with the first thermometer (9) for measuring water temperature in tank (2).
4. the solidification equipment of composite rotor blade trimmer according to claim 1, it is characterized in that: between described train wheel bridge (4) and lower plate (5), be also provided with alignment pin (10), the first base (11) is provided with along the both sides level of its width at described lower plate (5), described first base (11) offers U-shaped elongated slot (13) along its length, contiguous block (14) is provided with at the two ends of described U-shaped elongated slot (13), screw mandrel (15) is also provided with between described two contiguous blocks (14), described contiguous block (14) is also provided with the steel wire lock tightening nut (16) that screw mandrel (15) can be driven to rotate, described screw mandrel (15) is also provided with can along the movable block (17) of screw mandrel (15) length direction movement, described movable block (17) is positioned at U-shaped elongated slot (13) opening direction and is provided with the first connector (19) for being connected and fixed steel wire (18) one end, the other end of described fixing steel wire (18) is connected with the second connector (20) being arranged on train wheel bridge (4) side, described first connector (19) and the second connector (20) be arranged in parallel, described fixing steel wire (18) is for fixed blades (12).
5. the solidification equipment of composite rotor blade trimmer according to claim 1, it is characterized in that: be also provided with backing metal (21) in described train wheel bridge (4) upper surface, on described backing metal (21), also direction is provided with the second thermometer (22) along the horizontal plane.
6. a curing for composite rotor blade trimmer, is characterized in that: the method is carried out according to the following steps:
Step (1): the blade surface being first used for mounting and adjusting sheet (7) with coarse sand polishing, then cleans blade surface with acetone, then sticks composite material skin on blade (12) surface;
Step (2): cleaning trimmer holddown groove (6) inner surface, dries rear coating release agent naturally;
Step (3): according to the size of blade (12), cuts out the size needed by alkali-free glass fibre twill, and is dipped in solidification glue;
Step (4): alkali-free glass fibre twill is affixed on the blade surface for mounting and adjusting sheet (7), and two panels trimmer (7) is installed to blade upper and lower surface, then blade (12) is arranged in trimmer holddown groove (6), remove exposed alkali-free glass fibre twill, and to be strained and fixed blade (12) with fixing steel wire (18);
Step (5): with the water in heater (3) heating water tank (2), by the first thermometer (9) monitoring water temperature, when water temperature reaches 80-90 DEG C during insulation, trimmer positioning tool is positioned over tank (2) upper end, and compresses trimmer positioning tool, when the second thermometer (22) displays temperature is at 74-80 DEG C with backing metal (21), keep 3-4h, then close heater (3), when the second thermometer (22) displays temperature is less than 60 DEG C, blade (12) can be taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822876.4A CN104626424B (en) | 2014-12-25 | 2014-12-25 | A kind of solidification equipment and its curing of composite rotor blade trimmer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822876.4A CN104626424B (en) | 2014-12-25 | 2014-12-25 | A kind of solidification equipment and its curing of composite rotor blade trimmer |
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| Publication Number | Publication Date |
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| CN104626424A true CN104626424A (en) | 2015-05-20 |
| CN104626424B CN104626424B (en) | 2017-04-05 |
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| CN201410822876.4A Active CN104626424B (en) | 2014-12-25 | 2014-12-25 | A kind of solidification equipment and its curing of composite rotor blade trimmer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179407A (en) * | 2015-09-02 | 2015-12-23 | 哈尔滨飞机工业集团有限责任公司 | Glue-jointing tool for large regulating sheet of paddle |
| CN106183395A (en) * | 2016-07-05 | 2016-12-07 | 苏州市商祺光电有限公司 | Hot blast solidification site promotes local briliancy device |
| CN107186430A (en) * | 2017-06-15 | 2017-09-22 | 华南理工大学广州学院 | A kind of Intelligent unattended machine propeller trimmer and its pruning method |
| CN112373052A (en) * | 2020-10-21 | 2021-02-19 | 武汉理工大学 | Gluing method and device for metal wrapping edges of composite material blades |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6644081B1 (en) * | 2002-02-15 | 2003-11-11 | Joseph Keith Berry | System and method for adjusting helicopter blade trim tabs |
| CN101913433A (en) * | 2010-07-20 | 2010-12-15 | 哈尔滨飞机工业集团有限责任公司 | Surface treatment method for composite material blade of helicopter |
| CN103552348A (en) * | 2013-09-30 | 2014-02-05 | 优利康达（天津）科技有限公司 | Glass fiber thin plate coating forming machine |
| CN103850175A (en) * | 2012-12-04 | 2014-06-11 | 宜都市公路管理局 | Prestress tension and anchor device for aramid fiber cloth sheets |
| US20140305217A1 (en) * | 2013-04-12 | 2014-10-16 | The Boeing Company | Apparatus for Automated Rastering of an End Effector Over an Airfoil-Shaped Body |
-
2014
- 2014-12-25 CN CN201410822876.4A patent/CN104626424B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6644081B1 (en) * | 2002-02-15 | 2003-11-11 | Joseph Keith Berry | System and method for adjusting helicopter blade trim tabs |
| CN101913433A (en) * | 2010-07-20 | 2010-12-15 | 哈尔滨飞机工业集团有限责任公司 | Surface treatment method for composite material blade of helicopter |
| CN103850175A (en) * | 2012-12-04 | 2014-06-11 | 宜都市公路管理局 | Prestress tension and anchor device for aramid fiber cloth sheets |
| US20140305217A1 (en) * | 2013-04-12 | 2014-10-16 | The Boeing Company | Apparatus for Automated Rastering of an End Effector Over an Airfoil-Shaped Body |
| CN103552348A (en) * | 2013-09-30 | 2014-02-05 | 优利康达（天津）科技有限公司 | Glass fiber thin plate coating forming machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179407A (en) * | 2015-09-02 | 2015-12-23 | 哈尔滨飞机工业集团有限责任公司 | Glue-jointing tool for large regulating sheet of paddle |
| CN105179407B (en) * | 2015-09-02 | 2017-12-19 | 哈尔滨飞机工业集团有限责任公司 | A kind of big trimmer of blade is glued frock |
| CN106183395A (en) * | 2016-07-05 | 2016-12-07 | 苏州市商祺光电有限公司 | Hot blast solidification site promotes local briliancy device |
| CN106183395B (en) * | 2016-07-05 | 2019-04-16 | 苏州市商祺光电有限公司 | Hot wind solidifies site and promotes local luminance device |
| CN107186430A (en) * | 2017-06-15 | 2017-09-22 | 华南理工大学广州学院 | A kind of Intelligent unattended machine propeller trimmer and its pruning method |
| CN112373052A (en) * | 2020-10-21 | 2021-02-19 | 武汉理工大学 | Gluing method and device for metal wrapping edges of composite material blades |
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| CN104626424B (en) | 2017-04-05 |
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Inventor after: Zhang Xun Inventor after: Jiang Nianchao Inventor after: Wang Kexuan Inventor after: Jiao Zhiwen Inventor after: Shi Xiaohong Inventor after: Song Jun Inventor after: Zhang Dian Inventor after: Qin Jun Inventor after: Zhao Min Inventor before: Shi Xiaohong Inventor before: Zhu Bo Inventor before: He Jianming Inventor before: Zhang Jianfei Inventor before: Qin Jun Inventor before: Xu Wenjing |
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