CN112238195B - Manufacturing method of wing-shaped blade for fan - Google Patents
Manufacturing method of wing-shaped blade for fan Download PDFInfo
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- CN112238195B CN112238195B CN202011143638.2A CN202011143638A CN112238195B CN 112238195 B CN112238195 B CN 112238195B CN 202011143638 A CN202011143638 A CN 202011143638A CN 112238195 B CN112238195 B CN 112238195B
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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
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
A manufacturing method of an airfoil blade for a fan comprises the following steps: firstly, preparing materials, namely preparing a plate material, and rolling the plate material into a planar material plate through a rolling shaft of a rolling machine; secondly, blanking a plate, namely cutting the material plate according to the outer contour shapes of the upper end surface, the lower end surface and the side edges of the airfoil blade, wherein the blanked cutting plate is in a planar shape after the airfoil blade is unfolded; thirdly, radian forming, namely processing the cutting plate into a wavy radian plate by using a forming die; folding the arc plate into a wing shape, bending and folding the arc plate to enable two side edges of the arc plate to be abutted together, mounting the arc plate on a shaping clamp, and shaping the arc plate into the wing-shaped plate with the outer contour being the wing shape; and fifthly, welding the tail part, namely welding and fixing the two side edges of the wing plate together. The invention adopts the metal plate shaping and bending mode to manufacture the airfoil blade, can effectively save the cost of the airfoil blade, and can control the production cost of the airfoil blade.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a manufacturing method of an airfoil blade for a fan.
Background
At present, most centrifugal fans adopt wing-shaped blades, the wing shapes adopted by the blades are one of important factors influencing the efficiency of ventilating fans, the wing shapes of the centrifugal fans in China also adopt aviation wing shapes, such as RAF-6E, CLARK-Y, LS series, Rottingen wing shapes and the like, wherein the impeller of the centrifugal fan is shown in figure 1 and comprises a wheel disc 6, a wheel cover 5 and wing-shaped blades 4 'which are spirally distributed between the wheel disc 6 and the wheel cover 5, the traditional wing-shaped blades 4' are processed in a mode that the wing-shaped profiles are manufactured in a casting extrusion mode, then the profiles with required lengths are cut according to the lengths of the wing-shaped blades 4 ', the end surfaces of the cut profiles are milled, and connecting pieces connected with the wheel disc 6 or the wheel cover 5 on the wing-shaped blades 4' and the jointed end surfaces are added; however, the extrusion of the airfoil profile results in higher costs, which leads to the cost of the airfoil blade 4'; it is therefore desirable to develop a method of manufacturing a blade that can be cost effective.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a manufacturing method of an airfoil blade for a fan.
A manufacturing method of an airfoil blade for a fan comprises the following manufacturing steps:
preparing materials, namely preparing plates, and rolling the plates into a planar material plate through a rolling shaft of a rolling machine to remove the uneven defects on purchased plates;
blanking a plate, namely cutting the plate according to the outer contour shapes of the upper end surface, the lower end surface and the side edge of the airfoil blade, wherein the blanked cutting plate is in a planar shape after the airfoil blade is unfolded;
thirdly, radian forming, namely processing the cutting plate into a wavy radian plate by using a forming die;
folding the arc plate into a wing shape, bending and folding the arc plate to enable two side edges of the arc plate to be abutted together, and mounting the arc plate on a shaping clamp to shape the arc plate into the wing plate with the outer contour being the wing shape;
and fifthly, welding the tail part, namely welding and fixing the two side edges of the wing plate together.
Preferably, a plurality of connecting sheets are formed on the side edges of the upper side and the lower side of the cutting plate.
Preferably, the arc of radian board is a trough, and the circular arc centre of a circle of the radian board plate body of trough valley bottom both sides distributes in the upper and lower side of radian board.
Preferably, the plate blanking is performed by plasma cutting, and the material plate is flatly laid on a cutting platform of the ion cutting machine.
Preferably, the plate blanking is performed by laser cutting, and the material plate is tiled on a cutting platform of the laser cutting equipment.
Preferably, the forming die in the radian forming step adopts a stamping die, the forming die consists of an upper die and a lower die, a concave die groove is formed in the upper end surface of the lower die, a convex die opposite to the concave die groove is formed in the lower end surface of the upper die, the lower surface of the convex die is identical to the upper surface of the radian plate in shape, and the bottom surface of the concave die groove is identical to the lower surface of the radian plate in shape.
Preferably, a vertical guide post and a first limiting cushion block are fixed on the lower die on one side of the female die groove, the upper end of the guide post is inserted into the upper die, a branch block is formed on the side wall, close to one side of the female die groove, of the first limiting cushion block, a pressing block opposite to the female die groove is inserted into the lower end face of the branch block, a fastening bolt is hinged onto the pressing block and is in threaded connection with the branch block, and an avoidance groove opposite to the branch block is formed in the male die; and a second limiting cushion block is arranged on the other side of the female die groove and is fixed on the upper die.
Preferably, the airfoil plate consists of an arc-shaped upper plate body and an arc-shaped lower plate body, the shaping fixture comprises a bottom plate, a transverse fixing seat is formed on the bottom plate, a shaping groove which is opposite to the shape of the airfoil plate lower plate body is formed on the end face of the inner side of the fixing seat, a longitudinal reference seat is formed on one side of the fixing seat, and an arc-shaped groove communicated with the shaping groove is formed on the side wall, close to the fixing seat, of the reference seat; the side wall of the reference seat is abutted against a movable clamping seat, a supporting seat is fixed on a bottom plate outside the movable clamping seat, a plurality of longitudinal guide shafts are inserted on the supporting seat, one end of each guide shaft is fixed on the movable clamping seat, and a shaping mold with the shape opposite to that of the upper plate body of the airfoil plate is formed on the end surface, close to the fixed clamping seat, of the movable clamping seat; a longitudinal lead screw is screwed on the supporting seat, and a hand wheel is formed at the outer end of the lead screw; and an airfoil-shaped shaping block is fixed on the bottom plate between the movable clamping seat and the fixed clamping seat.
Preferably, the bottom plate is formed with a slot, the lower end of the shaping block is inserted into the slot of the bottom plate, the upper end of the shaping block is exposed out of the upper end surface of the movable clamping seat or the fixed clamping seat, the shape of the end surface of the shaping block close to one side of the fixed clamping seat is the same as that of the lower plate body of the airfoil plate, and the shape of the end surface of the shaping block close to one side of the movable clamping seat is the same as that of the upper plate body of the airfoil plate;
preferably, the upper plate body of the airfoil plate is inserted between the fixed clamping block and the movable clamping seat, the lower plate body is inserted between the fixed clamping seat and the fixed clamping block, and the side walls of the fixed clamping seat are exposed out of the two side edges of the airfoil plate.
The invention has the beneficial effects that:
the invention adopts the sheet metal shaping and bending mode to manufacture the airfoil-shaped blade, can effectively save the cost caused by the airfoil-shaped blade, thereby controlling the production cost of the airfoil-shaped blade, reducing the price of the airfoil-shaped blade fan and improving the market competitiveness of the fan.
Description of the drawings:
FIG. 1 is a schematic view of an impeller structure of an airfoil blade fan;
FIG. 2 is a flow chart of the manufacturing of an airfoil blade according to the present invention;
FIG. 3 is a schematic illustration of the airfoil blade forming process of the present invention;
FIG. 4 is a schematic view of a forming die used in the manufacture of an airfoil blade in accordance with the present invention;
FIG. 5 is a schematic view of a sizing jig used in the manufacture of an airfoil blade according to the present invention.
In the figure: 1. a material plate; 2. cutting the board; 3. a radian plate; 4. an airfoil plate; 4', airfoil blades; 5. a wheel cover; 6. a wheel disc; 7. forming a mold; 71. an upper die; 711. a male die; 72. a lower groove; 721. a die cavity; 73. a first limit cushion block; 731. a branching block; 74. pressing into blocks; 75. a guide post; 76. a second limiting cushion block; 8. shaping the clamp; 81. a base plate; 811. a fixed clamping seat; 812. a reference base; 813. a shaping groove; 814. an arc-shaped slot; 815. a slot; 82. a shaping block; 83. a movable clamping seat; 84. a supporting seat; 85. a guide shaft; 86. a lead screw; 861. hand wheel.
The specific implementation mode is as follows:
example (b): referring to fig. 2 to 5, a method for manufacturing an airfoil blade for a fan includes the following steps:
firstly, preparing materials, namely preparing a plate material, rolling the plate material into a planar material plate 1 through a rolling shaft of a rolling machine, and removing the uneven defect on the purchased plate material;
secondly, blanking a plate, namely cutting the material plate 1 according to the outer contour shapes of the upper end surface, the lower end surface and the side edge of the airfoil blade, wherein the blanked cutting plate 2 is in a planar shape after the airfoil blade is unfolded;
thirdly, radian molding, namely processing the cutting plate 2 into a corrugated radian plate 3 by using a molding die 7;
folding the arc plate 3 into a wing shape, bending and folding the arc plate 3 to enable two side edges of the arc plate 3 to be abutted together, and mounting the arc plate 3 on a shaping clamp 8 to shape the arc plate 3 into the wing-shaped plate 4 with the wing-shaped outer contour;
and fifthly, welding the tail part, namely welding and fixing the two side edges of the airfoil plate 4 together by welding the tail part of the airfoil plate 4.
Preferably, a plurality of connecting sheets are formed on the side edges of the upper side and the lower side of the cutting plate 2.
Preferably, the arc of the arc plate 3 is a trough, and the circular arc centers of the plate bodies of the arc plate 3 on both sides of the trough bottom of the trough are distributed on the upper side and the lower side of the arc plate 3.
Preferably, the plate blanking is performed by plasma cutting, and the material plate 1 is flatly laid on a cutting platform of the ion cutting machine.
Preferably, the plate blanking is performed by laser cutting, and the material plate 1 is flatly laid on a cutting platform of the laser cutting equipment.
Preferably, the forming die 7 in the radian forming step is a stamping die, the forming die 7 is composed of an upper die 71 and a lower die 72, a die groove 721 is formed on the upper end surface of the lower die 72, a male die 711 opposite to the die groove 721 is formed on the lower end surface of the upper die 71, the lower surface of the male die 711 is in the same shape as the upper surface of the radian plate 3, and the bottom surface of the die groove 721 is in the same shape as the lower surface of the radian plate 3.
Preferably, a vertical guide post 75 and a first limit cushion block 73 are fixed on the lower die 72 on one side of the concave die groove 721, the upper end of the guide post 75 is inserted into the upper die 71, a branch block 731 is formed on the side wall of the first limit cushion block 73 on the side close to the concave die groove 721, a press block 74 opposite to the concave die groove 721 is inserted into the lower end face of the branch block 731, a fastening bolt is hinged on the press block 74, the fastening bolt is screwed on the branch block 731, and an avoiding groove opposite to the branch block 731 is formed on the convex die 711; the other side of the female die groove 721 is provided with a second limit cushion block 76, and the second limit cushion block 76 is fixed on the upper die 71.
Preferably, the airfoil plate 4 consists of an arc-shaped upper plate body and an arc-shaped lower plate body, the shaping fixture 8 comprises a bottom plate 81, a transverse fixing holder 811 is formed on the bottom plate 81, a shaping groove 813 opposite to the shape of the lower plate body of the airfoil plate 4 is formed on the end surface of the inner side of the fixing holder 811, a longitudinal reference seat 812 is formed on one side of the fixing holder 811, and an arc-shaped groove 814 communicated with the shaping groove 813 is formed on the side wall of the reference seat 812 close to the fixing holder 811; the side wall of the reference seat 812 is abutted against a movable clamping seat 83, a supporting seat 84 is fixed on the bottom plate 81 outside the movable clamping seat 83, a plurality of longitudinal guide shafts 85 are inserted in the supporting seat 84, one end of each guide shaft 85 is fixed on the movable clamping seat 83, and a shaping mold opposite to the shape of the upper plate body of the airfoil plate 4 is formed on the end surface of the movable clamping seat 83 close to the fixed clamping seat 811; a longitudinal screw rod 86 is screwed on the supporting seat 84, and a hand wheel 861 is formed at the outer end of the screw rod 86; and a wing-shaped shaping block 82 is fixed on a bottom plate 81 between the movable clamping seat 83 and the fixed clamping seat 811.
Preferably, an insertion groove 815 is formed in the bottom plate 81, the lower end of the shaping block 82 is inserted into the insertion groove 815 of the bottom plate 81, the upper end of the shaping block 82 is exposed out of the upper end surface of the movable clamping seat 83 or the fixed clamping seat 811, the shape of the end surface of the shaping block 82 close to one side of the fixed clamping seat 811 is the same as that of the lower plate body of the wing panel 4, and the shape of the end surface of the shaping block 82 close to one side of the movable clamping seat 83 is the same as that of the upper plate body of the wing panel 4;
preferably, the upper plate body of the airfoil plate 4 is inserted between the shaping block 82 and the movable clamping seat 83, the lower plate body is inserted between the fixed clamping seat 811 and the shaping block 82, and the two side edges of the airfoil plate 4 are exposed out of the side walls of the fixed clamping seat 811.
The working principle is as follows: the invention relates to a manufacturing method of a wing blade for a fan, the wing shape of the traditional wing blade is manufactured and molded by extrusion, the material of the wing shape is the shape, and the leading mode of the wing blade is that the upper surface and the lower surface of the wing blade are regarded as two plate bodies, the two plate bodies are unfolded to form one plate body, thus the leading mode of the wing blade is in the reverse direction, a flat material plate 1 is prepared, then a cutting plate 2 with the upper surface and the lower surface unfolded like the wing blade is cut, then the cutting plate 2 is bent to be a cambered plate 3, the cambered plate 3 is folded to form the wing shape and is shaped, and the two side edges of the cambered plate 3 are welded and fixed together, thereby the wing blade is processed and molded.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (6)
1. A manufacturing method of an airfoil blade for a fan is characterized by comprising the following steps: the manufacturing steps of the blade are as follows:
firstly, preparing materials, preparing plates, rolling the plates into a planar material plate (1) through a rolling shaft of a rolling machine, and removing the defects of unevenness on purchased plates;
secondly, blanking a plate, namely cutting the material plate (1) according to the outer contour shapes of the upper end surface, the lower end surface and the side edges of the airfoil blade, wherein the blanked cutting plate (2) is in a planar shape after the airfoil blade is unfolded, and a plurality of connecting pieces are formed on the side edges of the upper side and the lower side of the cutting plate (2);
thirdly, radian molding, namely processing the cutting plate (2) into a wavy radian plate (3) by using a molding die (7);
folding the arc plate (3) to form a wing shape, bending and folding the arc plate (3) to enable two side edges of the arc plate (3) to be abutted together, installing the arc plate (3) on a shaping clamp (8) to enable the arc plate (3) to be shaped into a wing-shaped plate (4) with an outer contour being a wing shape;
the wing-shaped plate (4) consists of an arc-shaped upper plate body and an arc-shaped lower plate body, the shaping fixture (8) comprises a bottom plate (81), a transverse fixing clamp seat (811) is formed on the bottom plate (81), a shaping groove (813) opposite to the shape of the lower plate body of the wing-shaped plate (4) is formed on the inner side end face of the fixing clamp seat (811), a longitudinal reference seat (812) is formed on one side of the fixing clamp seat (811), and an arc-shaped groove (814) communicated with the shaping groove (813) is formed on the side wall, close to the fixing clamp seat (811), of the reference seat (812); the side wall of the reference seat (812) is abutted with a movable clamping seat (83), a supporting seat (84) is fixed on a bottom plate (81) at the outer side of the movable clamping seat (83), a plurality of longitudinal guide shafts (85) are inserted into the supporting seat (84), one end of each guide shaft (85) is fixed on the movable clamping seat (83), and a shaping mold corresponding to the shape of a plate body on the wing-shaped plate (4) is formed on the end surface, close to the fixed clamping seat (811), of the movable clamping seat (83); a longitudinal screw rod (86) is screwed on the supporting seat (84), and a hand wheel (861) is formed at the outer end of the screw rod (86); a wing-shaped shaping block (82) is fixed on a bottom plate (81) between the movable clamping seat (83) and the fixed clamping seat (811);
the novel wing plate forming machine is characterized in that an inserting groove (815) is formed in the bottom plate (81), the lower end of the shaping block (82) is inserted into the inserting groove (815) of the bottom plate (81), the upper end of the shaping block (82) is exposed out of the upper end face of the movable clamping seat (83) or the fixed clamping seat (811), the shape of the end face, close to the fixed clamping seat (811), of the shaping block (82) is the same as that of a lower plate body of the wing plate (4), and the shape of the end face, close to the movable clamping seat (83), of the shaping block (82) is the same as that of an upper plate body of the wing plate (4); the upper plate body of the wing plate (4) is inserted between the shaping block (82) and the movable clamping seat (83), the lower plate body is inserted between the fixed clamping seat (811) and the shaping block (82), and the two side edges of the wing plate (4) are exposed out of the side wall of the fixed clamping seat (811);
and fifthly, welding the tail part, namely welding and fixing the two side edges of the airfoil plate (4) together.
2. The method for manufacturing an airfoil blade for a wind turbine as claimed in claim 1, wherein: the arc of radian board (3) is a trough, and the circular arc centre of a circle of the radian board (3) plate body of trough valley bottom both sides distributes in the upper and lower side of radian board (3).
3. The method for manufacturing an airfoil blade for a wind turbine as claimed in claim 1, wherein: the plate blanking adopts plasma cutting, and the material plate (1) is tiled on a cutting platform of an ion cutting machine.
4. The method for manufacturing an airfoil blade for a wind turbine according to claim 1, wherein: the plate blanking adopts laser cutting, and the material plate (1) is tiled on a cutting platform of laser cutting equipment.
5. The method for manufacturing an airfoil blade for a wind turbine according to claim 1, wherein: the forming die (7) in the radian forming step adopts a stamping die, the forming die (7) consists of an upper die (71) and a lower die (72), a concave die groove (721) is formed in the upper end face of the lower die (72), a convex die (711) opposite to the concave die groove (721) is formed in the lower end face of the upper die (71), the lower surface of the convex die (711) is identical to the upper surface of the radian plate (3), and the bottom surface of the concave die groove (721) is identical to the lower surface of the radian plate (3).
6. The method for manufacturing an airfoil blade for a wind turbine according to claim 5, wherein: a vertical guide post (75) and a first limiting cushion block (73) are fixed on the lower die (72) on one side of the female die groove (721), the upper end of the guide post (75) is inserted on the upper die (71), a branch block (731) is formed on the side wall of the first limiting cushion block (73) on one side close to the female die groove (721), a pressing block (74) opposite to the female die groove (721) is inserted on the lower end face of the branch block (731), a fastening bolt is hinged on the pressing block (74) and is screwed on the branch block (731), and an avoiding groove opposite to the branch block (731) is formed on the male die (711); and a second limiting cushion block (76) is arranged on the other side of the female die groove (721), and the second limiting cushion block (76) is fixed on the upper die (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143638.2A CN112238195B (en) | 2020-10-23 | 2020-10-23 | Manufacturing method of wing-shaped blade for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143638.2A CN112238195B (en) | 2020-10-23 | 2020-10-23 | Manufacturing method of wing-shaped blade for fan |
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| CN112238195A CN112238195A (en) | 2021-01-19 |
| CN112238195B true CN112238195B (en) | 2022-07-26 |
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| CN202011143638.2A Active CN112238195B (en) | 2020-10-23 | 2020-10-23 | Manufacturing method of wing-shaped blade for fan |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117145587B (en) * | 2023-08-17 | 2024-04-09 | 中国航发贵州黎阳航空动力有限公司 | Titanium alloy discontinuous reinforced structure hollow support plate and superplastic diffusion connection die thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1023896C2 (en) * | 2003-07-11 | 2005-01-12 | Stork Fokker Aesp Bv | Method for manufacturing a semi-finished product for a wing-shaped element. |
| KR20130109583A (en) * | 2012-03-28 | 2013-10-08 | 주식회사 성우하이텍 | Bending press system |
| FR3032898B1 (en) * | 2015-02-19 | 2017-03-10 | Snecma | METHOD OF FORGING AT HIGH TEMPERATURE OF A PREFORMED METAL PIECE |
| ES2819886T3 (en) * | 2016-02-24 | 2021-04-19 | Punker Gmbh | Profiled Blade, Fan Impeller, and Procedure for Making a Profiled Blade |
| KR101968415B1 (en) * | 2017-09-12 | 2019-04-11 | 부산대학교 산학협력단 | The thick plate forming apparatus having large surface for blade |
| CN209647406U (en) * | 2019-02-21 | 2019-11-19 | 苏州工业职业技术学院 | A kind of leaf blade flexible forming mold |
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