CN104646465A - Multi-section and synchronous torsion formation method of hollow blade - Google Patents
Multi-section and synchronous torsion formation method of hollow blade Download PDFInfo
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- CN104646465A CN104646465A CN201510122613.7A CN201510122613A CN104646465A CN 104646465 A CN104646465 A CN 104646465A CN 201510122613 A CN201510122613 A CN 201510122613A CN 104646465 A CN104646465 A CN 104646465A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/20—Bending sheet metal, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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Abstract
The invention discloses a multi-section and synchronous torsion formation method of a hollow blade. The multi-section and synchronous torsion formation method comprises the following steps: a. generating a hollow blade blank model and a finished product mode; b. forming a plurality of initial sections parallel to the upper surfaces of the blade tenons on the blank model, and forming a plurality of torsion sections parallel to the upper surfaces of the blade tenons on the corresponding positions of the finished product mode; c. calculating the torsion center and the torsion angle of each initial section converted to the corresponding to the torsion section; d. providing a hollow blade to be processed, wherein the hollow blade to be processd comprises a plurality of initial sections; and e. according to the corresponding torsion center and the torsion angle, respectively twisting and forming the plurality of initial sections into the plurality of corresponding torsion sections. Compared with the prior art, the torsion and forming of all sections of the blade can be synchronously conducted, the deformation precision is improved, the local deformation resistance is reduced, the forming speed is promoted, the formation time is shortened, and the tooling cost can be saved.
Description
Technical field
The present invention relates to a kind of hollow blade multi-section and synchronously reverse manufacturing process, belong to metal machining technology field.
Background technology
The application of wide-chord hollow fan blade is aero-engine is that the effective means when improving aero-engine performance (increase compressor surging nargin, raise the efficiency, strengthen anti-foreign object damage ability, improve motor power, reduce the number of blade and weight reduction) is had an high regard in increase.Blade profile, primarily of intermediate course and both sides covering composition, is the hollow closed structure of truss structure in the middle of blade, and blade plunders design before and after adopting and thin and variable cross-section, and blade also has larger windup-degree, with the tenon for connecting leaf-connecting disk of circular arc.
In prior art, the forming technology of hollow blade pushes away o ing technique, with described technique with the use of also have hollow blade push away o ing mould, it designs the mould with both sides open cavity passage according to finished product hollow blade appearance curved surface, blade is pushed mold cavity from die cavity passage end by clamping blade tenon, blade is forced to bend under the effect of mold cavity inner surface, and twist distortion.This pushes away o ing technique and dull and stereotyped hollow blade blank can be shaped complicated twisting contour, and make it possess required torsion angle, forming process is steadily convenient, and speed is controlled, and each several part distortion is evenly distributed, and production efficiency is high.But this pushes away o ing technique Leaf and progressively to twist from tip distortion, until root of blade, it is uncontrolled not enter the blade-section distortion pushed away in bending mould in this forming process.If blade twist angle is comparatively large or blade is longer, it is larger that mold cavity intra vane pushes away forward suffered resistance in curved process, do not enter mold cavity blade-section will be squeezed and be out of shape, easily occur Compressional buckling, finally push away the blade profile precision after o ing and be difficult to ensure.
Summary of the invention
For at least one of solving the problems of the technologies described above, the object of the present invention is to provide a kind of realize blade multi-section be reversed into carry out just as step, blade integral reverse avoid local deformation drag excessive hollow blade multi-section reverse manufacturing process, to solve the not good problem of prior art hollow core blade forming effect.
For achieving the above object, an embodiment of the present invention provides a kind of hollow blade multi-section and reverses manufacturing process, comprises the following steps:
Blank model, the finished product model of a, generation hollow blade;
B, on described blank model, form multiple initial cross-section being parallel to the upper surface of blade tenon, form multiple torsion cross section being parallel to the upper surface of blade tenon in the relevant position of described finished product model;
C, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section;
D, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section;
E, according to the centre of twist of correspondence and windup-degree, described multiple initial cross-section is reversed respectively and is configured as corresponding described multiple torsion cross section.
As a further improvement on the present invention, described step " c, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section " comprises,
C1, determine the initial centerline of each described initial cross-section and the torsion CB in corresponding described torsion cross section respectively;
C2, according to described initial centerline and described torsion CB, determine that each described initial cross-section is converted into the centre of twist and the windup-degree in corresponding described torsion cross section.
As a further improvement on the present invention, the initial centerline of described initial cross-section be by described initial cross-section to the straight line of the equidistant some matching of leaf basin, blade back; Accordingly, the torsion CB in described torsion cross section be by described torsion cross section to the straight line of the equidistant some matching of leaf basin, blade back.
As a further improvement on the present invention, the described centre of twist is the intersection point of described initial centerline and described torsion CB; Described windup-degree is the angle of described initial centerline and described torsion CB.
As a further improvement on the present invention, described windup-degree is not more than 90 °.
As a further improvement on the present invention, described step " d, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section " also comprises,
Antioxidant is applied on the surface of the hollow blade described to be processed applying antioxidant.
As a further improvement on the present invention, described step " d, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section " also comprises,
Described hollow blade to be processed is heated to reverse temperature.
As a further improvement on the present invention, described step " e, according to the centre of twist of correspondence and windup-degree, reversed respectively by described multiple initial cross-section and be configured as corresponding described multiple torsion cross section " also comprises,
Reversed by described multiple initial cross-section when being configured as corresponding described multiple torsion cross section respectively, described multiple initial cross-section synchronously reverses.
As a further improvement on the present invention, described step " e, according to the centre of twist of correspondence and windup-degree, reversed respectively by described multiple initial cross-section and be configured as corresponding described multiple torsion cross section " specifically comprises,
E1, according to the centre of twist of correspondence and windup-degree, calculate the torsion distance of each described initial cross-section;
E2, setting torsion time;
E3, calculate the reverse speed of each described initial cross-section;
E4, described multiple initial cross-section synchronously reversed by described reverse speed be respectively configured as corresponding described multiple torsion cross section.
As a further improvement on the present invention, described method also comprises,
After f, each described initial cross-section reverse respectively and be configured as corresponding described torsion cross section, after postponing first time period, complete one and reverse shaping working cycles.
Compared with prior art, the present invention has following Advantageous Effects: hollow blade multi-section synchronously reverses manufacturing process can make being reversed into of each cross section of blade carry out just as step, the centre of twist in each cross section, windup-degree, reverse speed are all independent controlled, local deformation drag is reduced while torsional deflection precision is improved, improve blade twist forming speed, shorten curring time; In addition, the torsion number of cross sections of blade, position can according to the concrete appearance and size of different leaves flexible design, be suitable for application flexibility frock, save frock cost.
Accompanying drawing explanation
Fig. 1 is the flow chart that the hollow blade multi-section of an embodiment of the present invention synchronously reverses manufacturing process;
Fig. 2 is the structural representation of the torsion assembly of an embodiment of the present invention;
Fig. 3 is the use reference diagram that an embodiment of the present invention hollow blade multi-section synchronously reverses building mortion;
Fig. 4 is the blank model of the hollow blade of one embodiment of the invention and the schematic diagram of finished product model;
Fig. 5 is the schematic diagram of the determination of the centre of twist and windup-degree in Fig. 4;
Fig. 6 is the position view reversing assembly in Fig. 2.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
The flow chart of manufacturing process is synchronously reversed referring to Fig. 1, Fig. 1 hollow blade multi-section that is an embodiment of the present invention.The hollow blade multi-section that an embodiment of the present invention provides reverses manufacturing process, comprises the following steps:
Blank model, the finished product model of a, generation hollow blade;
B, on described blank model, form multiple initial cross-section being parallel to the upper surface of blade tenon, form multiple torsion cross section being parallel to the upper surface of blade tenon in the relevant position of described finished product model;
C, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section;
D, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section;
E, according to the centre of twist of correspondence and windup-degree, described multiple initial cross-section is reversed respectively and is configured as corresponding described multiple torsion cross section.
The hollow blade multi-section that an embodiment of the present invention provides reverses manufacturing process can make the centre of twist in each cross section, windup-degree, reverse speed all independent controlled, local deformation drag is reduced while torsional deflection precision is improved, improve blade twist forming speed, shorten curring time; And the number of cross sections of hollow blade, position can according to the concrete appearance and size of different hollow blade flexible design, be suitable for application flexibility frock, save frock cost.
In above-mentioned torsion manufacturing process, step c, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section " comprise,
C1, determine the initial centerline of each described initial cross-section and the torsion CB in corresponding described torsion cross section respectively;
C2, according to described initial centerline and described torsion CB, determine that each described initial cross-section is converted into the centre of twist and the windup-degree in corresponding described torsion cross section.
In addition, the initial centerline of described initial cross-section be by described initial cross-section to the straight line of the equidistant some matching of leaf basin, blade back; Accordingly, the torsion CB in described torsion cross section be by described torsion cross section to the straight line of the equidistant some matching of leaf basin, blade back.Like this, can obtain corresponding to many initial centerline of multiple initial cross-section and many torsion CBs in corresponding multiple torsion cross section, to understand the change of each initial cross-section.In addition, each center line is obtained by a matching, can ensure its validity.
The intersection point of each described initial centerline described torsion CB corresponding thereto is also the centre of twist of each initial cross-section; The angle of each described initial centerline described torsion CB corresponding thereto is also the windup-degree before and after each initial cross-section reverses.Described windup-degree is not more than 90 °.
In above-mentioned torsion manufacturing process, described step " d, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section " also comprises,
At the surface of described hollow blade to be processed coating antioxidant, avoid the oxidation of part under high temperature and the contact friction force reduced between hollow blade and fixture.After the surface of described hollow blade to be processed coating antioxidant, described hollow blade to be processed is heated to reverse temperature.Described torsion temperature is to make described hollow blade to be processed have the temperature of best ductility, can record according to the material test of described hollow blade to be processed.
In above-mentioned torsion manufacturing process, step " e, according to the centre of twist of correspondence and windup-degree, reversed respectively by described multiple initial cross-section and be configured as corresponding described multiple torsion cross section " also comprises,
Reversed by described multiple initial cross-section when being configured as corresponding described multiple torsion cross section respectively, described multiple initial cross-section synchronously reverses.Torsional deflection precision can be strengthened like this, reduce local deformation drag, improve blade twist forming speed, shorten curring time.
Concrete the comprising of step e,
E1, according to the centre of twist of correspondence and windup-degree, calculate the torsion distance of each described initial cross-section;
E2, setting torsion time;
E3, calculate the reverse speed of each described initial cross-section;
E4, described multiple initial cross-section synchronously reversed by described reverse speed be respectively configured as corresponding described multiple torsion cross section.
In addition, in above-mentioned torsion manufacturing process, after step e completes, also comprise step f, after each described initial cross-section reverses respectively and is configured as corresponding described torsion cross section, after postponing first time period, complete one and reverse shaping working cycles.Postpone first time period and can realize the resilience after utilizing high-temperature stress relaxation effect to reduce blade twist, thus ensure that hollow blade reverses the quality be shaped.
Compared with prior art, the present invention has following Advantageous Effects: hollow blade multi-section synchronously reverses manufacturing process can make being reversed into of each cross section of blade carry out just as step, the centre of twist in each cross section, windup-degree, reverse speed are all independent controlled, local deformation drag is reduced while torsional deflection precision is improved, improve blade twist forming speed, shorten curring time; In addition, the torsion number of cross sections of blade, position can according to the concrete appearance and size of different leaves flexible design, be suitable for application flexibility frock, save frock cost.
In addition, with reference to figure 2, Fig. 2 be the structural representation of torsion assembly of an embodiment of the present invention.First, know with easy in order to what describe, definition x-axis direction is horizontal cross, and definition and the orthogonal y-axis direction of x-axis are that level is longitudinal, the plane defining described x-axis and the common place of y-axis is horizontal plane, is vertical direction with the z-axis direction of described horizontal plane.The torsion assembly 10 of an embodiment of the present invention, the torsion for hollow blade is shaped, and described torsion assembly 10 comprises clamping part 11, through hole 111, first adjusting rod 12 and the second adjusting rod 13.
Described clamping part 11 has the upper surface 1121 that is oppositely arranged and lower surface (figure does not identify), and described through hole 111 to be arranged on described clamping part 11 and to run through the described upper surface 1121 of described clamping part 11 and described lower surface.Described through hole 111 can pass for described hollow blade, and makes described torsion assembly 10 be engaged to the section being parallel to arbitrarily the upper plane of blade tenon on described hollow blade.
Described first adjusting rod 12 comprises the first end 121 and the 3rd end 123 that are oppositely arranged, and described first end 121 is arranged on described clamping part 11 rotationally; Second adjusting rod 13 comprises the second end 132 and the 4th end 134 that are oppositely arranged, and described second end 132 is arranged on described clamping part 11 rotationally.
Wherein, when described hollow blade is placed in described through hole 111, described first adjusting rod 12 can move by relative described clamping part 11 with described second adjusting rod 13, reverses to control described clamping part 11, is shaped with the torsion realizing described hollow blade.
The torsion assembly of an embodiment of the present invention, the torsion that can realize the arbitrary section of hollow blade is shaped, and structure is simple, convenient control and operation.
Concrete, the movement locus of described first adjusting rod 12 and described second adjusting rod 13 is positioned at same plane, and is parallel to the upper surface of the blade tenon of described hollow blade, like this, the uniform force of described clamping part 11 can be made, in order to avoid cause the torsional deflection in on-plane surface.
Described torsion assembly 10 also comprises the first pedestal 15, first connector 14, second pedestal 17, second connector 16 and horizontal concrete chute 113.
Described second adjusting rod 13 can slide along described horizontal concrete chute 113.Concrete, described second adjusting rod 13 is connected to described second pedestal 17 by described second connector 16, and described second adjusting rod 13 can rotate relative to described second pedestal 17 for axle by described second connector 16; In addition, described second pedestal 17 is connected in described horizontal concrete chute 113 slidably, and then realizing described second adjusting rod 13 can not only can relatively rotate but also can relative sliding by relatively described clamping part 11.Like this, in the torsion forming process of described hollow blade, described second adjusting rod 13 can uniform motion on the same line, is not only convenient to control the movement velocity of described second adjusting rod 13, and the torsional deflection precision of hollow blade can be improved, reduce local deformation drag.
Further, in the horizontal transverse direction, the length of described horizontal concrete chute 113 is not less than the length of described through hole 111, to ensure the relative sliding scope of the relatively described clamping part 11 of described second adjusting rod 13, strengthens the controllability reversing assembly.
Described first adjusting rod 12 is connected on described first pedestal 15 by described first connector 14 rotationally, described first pedestal 15 is arranged at described clamping part 11, when described clamping part 11 twists, described first pedestal 15 relatively described clamping part 11 position is fixed.By such setting, while described first adjusting rod 12 can be made to drive torsion, also can play the effect that position limits, the relative displacement range of clamping part 11 described in described first adjusting rod 12 definable, in order to avoid described clamping part breaks away.
In addition, described first pedestal 15 also can be set to dismountablely be connected to described clamping part 11, to change; Be provided with fixture (not shown) between described first pedestal 15 and described clamping part 11, when carrying out torsion and being shaped, described first pedestal 15 is fixedly connected on the optimum position of described clamping part 11 by described fixture.
In the horizontal transverse direction, described first adjusting rod 12 and described second adjusting rod 13 are arranged at the both sides of the described hollow blade centre of twist respectively, thus give respectively and twisting resistance in the both sides of the centre of twist of described hollow blade, to ensure torsion effect.
Described first adjusting rod 12 and described second adjusting rod 13 are arranged at the homonymy of described clamping part 11, and as shown in the figure in embodiment, the two is all arranged at the front side 1141 in described clamping part 11 level longitudinal direction.Certainly, described first adjusting rod 12 and described second adjusting rod 13 also can be divided into the front side 1141 and rear side (figure does not identify) that described clamping part 11 is oppositely arranged.
Described first adjusting rod 12 and/or described second adjusting rod 13 reverse power by moving horizontally to be applied on described clamping part 11, also described first adjusting rod 12 and/or described second adjusting rod 13 can be set to adjustable in length, to be applied on twisting resistance to described clamping part 11 by the mode of its length of adjustment.
In addition, described through hole 111 can be set to specific shape as required, and in diagram illustrated embodiment, described through hole 111 is set to rectangle.Preferably, the width of described through hole 111 on level is longitudinal is slightly larger than the spacing of leaf basin and blade back on described hollow blade.
The use reference diagram that an embodiment of the present invention hollow blade multi-section synchronously reverses building mortion referring to Fig. 3, Fig. 3.
An embodiment of the present invention additionally provides a kind of hollow blade multi-section and synchronously reverses building mortion, torsion for described hollow blade is shaped, described hollow blade comprises multiple cross section being parallel to the upper plane of blade tenon, described device comprises multiple torsion assembly 10 as above, the stacked setting of described multiple torsion assemblies 10, described multiple torsion assembly 10 corresponds respectively to described multiple cross section of described hollow blade and is set to work asynchronously.
The hollow blade multi-section that one embodiment of the present invention provides synchronously reverses building mortion, can realize to time of twist process and speed controlled; Being reversed into of each cross section of blade can be made to carry out just as step, the centre of twist in each cross section, windup-degree, reverse speed are all independent controlled, reduce local deformation drag while torsional deflection precision is improved, improve blade twist forming speed, shorten curring time; In addition, the number of cross sections of blade, position can according to the concrete appearance and size of different leaves flexible design, be suitable for application flexibility frock, save frock cost.
Described hollow blade multi-section synchronously reverses building mortion also can comprise control system, described control system for controlling the motion of described first adjusting rod 12 and described second adjusting rod 13, as reverse speed, torsion time etc.
Referring to Fig. 4 to Fig. 6, and the embodiment of the torsion assembly shown in composition graphs 2, reverse manufacturing process to hollow blade multi-section of the present invention and be described in detail, Fig. 4 is the blank model of the hollow blade of one embodiment of the invention and the schematic diagram of finished product model; Fig. 5 is the schematic diagram of the determination of the centre of twist and windup-degree in Fig. 4; Fig. 6 is the position view reversing assembly in Fig. 2.
First, the blank model 100 of hollow blade is generated according to the appearance curved surface of hollow blade blank; The finished product model 200 of hollow blade is generated according to the appearance curved surface of hollow blade finished product;
Multiple initial cross-section being parallel to the upper surface of blade tenon is formed on described blank model 100, in the embodiment shown in fig. 4, it is 5 for number, initial cross-section J11, J21, J31, J41, J51, torsion cross section J12, J22, J32, J42, J52 that 5 are parallel to the upper surface of blade tenon is formed in the relevant position of described finished product model 200, wherein, initial cross-section J11, J21, J31, J41, J51 and torsion cross section J12, J22, J32, J42, J52 one_to_one corresponding respectively;
Determine described initial cross-section J11, J21, J31, J41, J51 initial centerline separately respectively, in the embodiment shown in fig. 4, the initial centerline of described each initial cross-section J11, J21, J31, J41, J51 overlaps, and is initial centerline L0; Determine corresponding described torsion cross section J12, J22, J32, J42, J52 torsion CB L1, L2, L3, L4, L5 separately respectively, described initial centerline L0 and each torsion CB L1, L2, L3, L4, L5 intersect and obtain the centre of twist O1, O2, O3, O4, O5 and windup-degree α 1, α 2, α 3, α 4, α 5 respectively;
There is provided a hollow blade to be processed, the surface coating antioxidant of each described generation processing hollow blade, described hollow blade to be processed comprises described 5 initial cross-sections, provides 5 corresponding described torsion assemblies 10; The blade tenon of described hollow blade to be processed is fixedly installed, by the blade-section of described hollow blade to be processed successively through the through hole 111 of 5 described torsion assemblies 10, reverse assembly 10 to make 5 and correspond respectively to 5 initial cross-section places, and be heated to reverse temperature, in order to reversing shaping work;
Then, according to the centre of twist O1, O2, O3, O4, O5 and windup-degree α 1, α 2, α 3, α 4, α 5, described 5 initial cross-sections are reversed respectively and is configured as described 5 torsion cross sections accordingly;
Concrete, according to the described centre of twist and windup-degree, and in conjunction with described torsion assembly 10 each parts between distance relation, calculate and reverse distance, as, the torsion distance of described first adjusting rod 12 is S*tan α+H*csc α-H, and the torsion distance of described second adjusting rod 13 is (D-S) * tan α-H*csc α+H; Setting makes the torsion time of each torsion assembly 10, and preferably the torsion time of each torsion assembly 10 is all identical; Then according to described torsion time and described torsion distance, the movement velocity of each first adjusting rod 12 and each second adjusting rod 13 is determined;
Reverse in forming process, make 5 to reverse assembly 10 synchronization action, synchronously reverse to be configured as respectively to drive corresponding 5 initial cross-sections and reverse cross section accordingly;
After completing said process, after making each torsion assembly 10 position keep first time period, described torsion assembly 10 is separated described hollow blade, complete one and reverse shaping working cycles.
Compared with prior art, the present invention has following Advantageous Effects: being reversed into of each cross section of blade can be made to carry out just as step, the centre of twist in each cross section, windup-degree, reverse speed are all independent controlled, local deformation drag is reduced while torsional deflection precision is improved, improve blade twist forming speed, shorten curring time.The torsion number of cross sections of blade, position can according to the concrete appearance and size of different leaves flexible design, be suitable for application flexibility frock, save frock cost.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (10)
1. hollow blade multi-section reverses a manufacturing process, it is characterized in that, comprises the following steps:
Blank model, the finished product model of a, generation hollow blade;
B, on described blank model, form multiple initial cross-section being parallel to the upper surface of blade tenon, form multiple torsion cross section being parallel to the upper surface of blade tenon in the relevant position of described finished product model;
C, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section;
D, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section;
E, according to the centre of twist of correspondence and windup-degree, described multiple initial cross-section is reversed respectively and is configured as corresponding described multiple torsion cross section.
2. hollow blade multi-section according to claim 1 reverses manufacturing process, it is characterized in that, described step " c, calculate the centre of twist and windup-degree that each described initial cross-section is converted into corresponding described torsion cross section " comprises,
C1, determine the initial centerline of each described initial cross-section and the torsion CB in corresponding described torsion cross section respectively;
C2, according to described initial centerline and described torsion CB, determine that each described initial cross-section is converted into the centre of twist and the windup-degree in corresponding described torsion cross section.
3. hollow blade multi-section according to claim 2 reverses manufacturing process, it is characterized in that, the initial centerline of described initial cross-section be by described initial cross-section to the straight line of the equidistant some matching of leaf basin, blade back; Accordingly, the torsion CB in described torsion cross section be by described torsion cross section to the straight line of the equidistant some matching of leaf basin, blade back.
4. hollow blade multi-section according to claim 3 reverses manufacturing process, and it is characterized in that, the described centre of twist is the intersection point of described initial centerline and described torsion CB; Described windup-degree is the angle of described initial centerline and described torsion CB.
5. hollow blade multi-section according to claim 4 reverses manufacturing process, and it is characterized in that, described windup-degree is not more than 90 °.
6. hollow blade multi-section according to claim 1 reverses manufacturing process, it is characterized in that, described step " d, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section " also comprises,
At the surface of described hollow blade to be processed coating antioxidant.
7. hollow blade multi-section according to claim 6 reverses manufacturing process, it is characterized in that, described step " d, provide a hollow blade to be processed, described hollow blade to be processed comprises described multiple initial cross-section " also comprises,
The hollow blade described to be processed applying antioxidant is heated to reverse temperature.
8. hollow blade multi-section according to claim 1 reverses manufacturing process, it is characterized in that, described step " e, according to the centre of twist of correspondence and windup-degree, reversed respectively by described multiple initial cross-section and be configured as corresponding described multiple torsion cross section " also comprises
Reversed by described multiple initial cross-section when being configured as corresponding described multiple torsion cross section respectively, described multiple initial cross-section synchronously reverses.
9. hollow blade multi-section according to claim 8 reverses manufacturing process, it is characterized in that, described step " e, according to the centre of twist of correspondence and windup-degree, reversed respectively by described multiple initial cross-section and be configured as corresponding described multiple torsion cross section " specifically comprises
E1, according to the centre of twist of correspondence and windup-degree, calculate the torsion distance of each described initial cross-section;
E2, setting torsion time;
E3, calculate the reverse speed of each described initial cross-section;
E4, described multiple initial cross-section synchronously reversed by described reverse speed be respectively configured as corresponding described multiple torsion cross section.
10. hollow blade multi-section according to claim 1 reverses manufacturing process, and it is characterized in that, described method also comprises,
After f, each described initial cross-section reverse respectively and be configured as corresponding described torsion cross section, after postponing first time period, complete one and reverse shaping working cycles.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671152A (en) * | 2017-09-20 | 2018-02-09 | 南京航空航天大学 | A kind of uiform section hollow fan blade low-angle based on stress relaxation reverses method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109210001A (en) * | 2017-07-13 | 2019-01-15 | 中国航空制造技术研究院 | A kind of design method of superplastic forming hollow twist blade |
| CN107671152A (en) * | 2017-09-20 | 2018-02-09 | 南京航空航天大学 | A kind of uiform section hollow fan blade low-angle based on stress relaxation reverses method |
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| CN104646465B (en) | 2017-01-18 |
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