CN102837163B - Manufacturing method of backward inclined fan blade of high efficiency motor - Google Patents
Manufacturing method of backward inclined fan blade of high efficiency motor Download PDFInfo
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- CN102837163B CN102837163B CN201210363059.8A CN201210363059A CN102837163B CN 102837163 B CN102837163 B CN 102837163B CN 201210363059 A CN201210363059 A CN 201210363059A CN 102837163 B CN102837163 B CN 102837163B
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Abstract
The invention relates to a manufacturing field of a fan of a high efficiency motor, and discloses a manufacturing method of a backward inclined fan blade of the high-efficiency motor. The manufacturing method comprises the following steps: a, cutting and forming a carbon structural steel plate by a plasma cutting machine, wherein the formed steel plate comprises an upper side, a lower side, a left side and a right side, the upper side is shorter than the lower side, the right side is a polyline spline curve, and the polyline spline curve bends towards the direction of the left side; b, curling the formed steel plate in the step a along the direction of the left side by a press to press into required radian, so as to obtain the required blade. The manufacturing method has the advantages that the manufacturing method is simple in manufacture process, fast to form the blade, high in machining precision, small in balance quantity of the product blade, high in control sensitivity, high in pumping efficiency of the blade, and higher in practical value.
Description
Technical field
The present invention relates to high efficiency motor fan and manufacture field, particularly a kind of manufacture method of high efficiency motor BI fan blade.
Background technology
High efficiency motor (high efficiency motor) refers to relative universal standard type motor and has more high efficiency motor.High efficiency motor is taken measures from design, material and technique, for example, adopt the measures such as rational stator and rotor groove number, fan parameter and positive chorded winding, reduces the wastage, and efficiency can improve 2%-8%, on average improves 4%.
Existing high efficiency motor majority is optimized from the electromagnetism aspect of motor, the improvement in structure, shape and the manufacture method of shorter mention to electric motor fan.The improvement most critical part of the fan for high efficiency motor is to whether the Design and manufacture of blade is reasonable, it is related to efficiency, size, size, the weight of fan and takes up room, high efficiency motor fan blade adopts the materials such as steel plate to make more at present, after the setting-out of blade panel beating launches, general processing method is difficult to reach the geometry requirement of blade, causes fan own loss large.
Summary of the invention
The machining manufacture that the present invention is directed to existing high efficiency motor fan blade cannot meet the shortcoming of its designing requirement, provides a kind of technique succinct, and working (machining) efficiency is high, can meet the new blade manufacture method that existing high efficiency motor fan blade design efficiency requires.
For achieving the above object, the present invention can take following technical proposals:
The manufacture method of high efficiency motor BI fan blade, comprises the following steps:
A. by carbon structural steels steel plate CUT cutting forming, steel plate after shaping comprises upper side edge, lower side, limit, left side, right edge, the length of upper side edge is less than the length of lower side, described right edge is multi-line section SPL, and described multi-line section SPL is towards left side edge direction bending;
B. working pressure machine carries out curlingly by the steel plate after being shaped in step a along the direction on limit, left side, extrudes required radian, obtains required fan blade.
As preferably, in step a, multi-line section SPL is the circular curve that SPL obtains after circular fitting.
As preferably, described circular curve obtains by following steps:
A '. taking fan axis as Z axis, the axial cross section of fan is that X-Y plane is set up X-Y-Z coordinate system, and wherein, the blade face of fan blade is parallel to Z axis;
B '. taking the origin of coordinates as the center of circle, on X-Y plane, do the concentric circles that several radiuses evenly increase progressively;
C '. by the concentric circles in step b ' with fan blade the projection on X-Y plane crossing and form some intersection points, on the blade face of fan blade, determine some line segments that are parallel to Z axis, the end points of described line segment bottom overlaps with the intersection point on described X-Y plane, and the relative Z axis of length of described line segment increases progressively with drawing near;
D '. the projection by said fans blade on X-Y plane launches, the blade face of the fan blade after expansion is plane, on the blade face of the fan blade after expansion, with the end points on line segment top described in multiple arc section matching step c ' and form required circular curve.
As preferably, upper side edge and the lower side of the steel plate after being shaped in step a are parallel to each other, and limit, left side is perpendicular to upper side edge and lower side.
As preferably, in step a, multi-line section SPL is the SPL obtaining by the following set point of matching: described set point is uniformly distributed in the direction that is parallel to limit, left side, and described set point to the vertical range on limit, left side increases from top to bottom successively.
As preferably, described set point to the vertical range on limit, left side evenly increases from top to bottom successively.
As preferably, the set point of described the top is identical with the length of upper side edge to the vertical range on limit, left side, between set point topmost and the right side end points of upper side edge, is straightway; It between the right side end points of set point bottom and lower side, is the circular arc protruding towards right edge direction.
As preferably, in step a, carbon structural steels steel plate is Q215-B carbon structural steels.
As preferably, in step a, the thickness of carbon structural steels steel plate is 3.0mm.
The present invention, owing to having adopted above technical scheme, has significant technique effect:
The present invention adopts first cutting forming, after carry out curling processing method blade processed, technique is succinct, machining accuracy is high.Adopt the manufacture method of high efficiency motor BI fan blade of the present invention, can process the blade of all size shape, the blade that machining obtains can meet various designing requirements.Can avoid unnecessary change and the distortion of the blade shape that the cutting of blade is caused, ensure that blade dimensions, shape meet designing requirement.
The blade cuts face obtaining by manufacture method of the present invention is bright and clean, is out of shape littlely, and the blade yield rate of manufacturing is high, and process velocity is fast.The BI balance of fan amount that adopts above-mentioned blade to manufacture is little, and fan control is highly sensitive, and precision is high, safe and reliable, and manufacturing cost is lower.Compare existing high efficiency motor, the electric efficiency of equipping above-mentioned BI fan can have comparatively significantly lifting, has higher using value.
Brief description of the drawings
Fig. 1 is the schematic top plan view of high efficiency motor and BI fan blade thereof.
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.
Fig. 3 is the side view after the fan blade of BI shown in Fig. 1 is launched.
Accompanying drawing mark: 1-fan base, 2-the first fan board, 3-fan blade, 4-the second fan board.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Described air-foil fan comprises fan base 1, the first fan board 2, fan blade 3, the second fan board 4.As shown in Figure 1, 2, fan blade 3 is between the first fan board 2 and the second fan board 4, and the first fan board 2 is coaxial with fan base 1 and be fixedly connected with.After fan blade 3 is launched, the blade face shape of gained fan blade 3 as shown in Figure 3.Described fan blade 3 is respectively the outer diameter D 2 of fan and the inner diameter D 1 of fan to maximum normal distance and the minimum perpendicular distance of fan axis, and the inlet angle of fan blade 3 is β 1, and the angle of outlet is β 2, and arc radius is R.
Embodiment 1
The manufacture method of high efficiency motor BI fan blade 3, comprises the following steps:
A. by carbon structural steels steel plate CUT cutting forming, steel plate after shaping comprises upper side edge, lower side, limit, left side, right edge, as shown in Figure 3, the length of upper side edge is less than the length of lower side, described right edge is multi-line section SPL, and described multi-line section SPL is towards left side edge direction bending.
B. working pressure machine carries out curlingly by the steel plate after being shaped in step a along the direction on limit, left side, extrudes required radian on the steel plate after shaping, obtains required fan blade 3.
Embodiment 2
The manufacture method of high efficiency motor BI fan blade 3, comprises the following steps:
A. the Q215-B carbon structural steels steel plate CUT cutting forming that is 3.0mm by thickness, steel plate after shaping comprises upper side edge, lower side, limit, left side, right edge, as shown in Figure 3, the length of upper side edge is less than the length of lower side, upper side edge and lower side are parallel to each other, limit, left side is perpendicular to upper side edge and lower side, described right edge is multi-line section SPL, multi-line section SPL is towards left side edge direction bending, this multi-line section SPL is the circular curve that SPL obtains after curve, described multi-line section SPL is the SPL obtaining by the following set point of matching: described set point is uniformly distributed in the direction on limit, left side, described set point to the vertical range on limit, left side evenly increases from top to bottom successively, above-mentioned set point is carried out to matching and obtain required circular curve.The set point of described the top is identical with the length of upper side edge to the vertical range on limit, left side, between set point topmost and the right side end points of upper side edge, is straightway; It between the right side end points of set point bottom and lower side, is the circular arc protruding towards right edge direction.
B. working pressure machine carries out curlingly by the steel plate after being shaped in step a along the direction on limit, left side, extrudes required radian on the steel plate after shaping, obtains required fan blade 3.
Embodiment 3
The manufacture method of high efficiency motor BI fan blade 3, comprises the following steps:
A. by carbon structural steels steel plate CUT cutting forming, steel plate after shaping comprises upper side edge, lower side, limit, left side, right edge, as shown in Figure 3, the length of upper side edge is less than the length of lower side, described right edge is multi-line section SPL, described multi-line section SPL is towards left side edge direction bending, and described multi-line section SPL is obtained by following steps:
A '. taking fan axis as Z axis, the axial cross section of fan is that X-Y plane is set up X-Y-Z coordinate system, and wherein, the blade face of fan blade is parallel to Z axis, and fan blade being projected as on X-Y axle has the arc section of uniform thickness.
B '. taking the origin of coordinates as the center of circle, on X-Y plane, do the concentric circles that several radiuses evenly increase progressively.
C '. by crossing with the projection of fan blade 3 on X-Y plane the concentric circles in step b ' and form some intersection points, on the blade face of fan blade 3, determine some line segments that are parallel to Z axis, the end points of described line segment bottom overlaps with the intersection point on described X-Y plane, the relative Z axis of length of described line segment increases progressively with drawing near, and increasing progressively of line segment length is uniform especially.
D '. the projection by said fans blade 3 on X-Y plane launches, the blade face of the fan blade 3 after expansion is plane, on the blade face of the fan blade 3 after expansion, with the end points on line segment top described in multiple arc section matching step c ' and form required circular curve.Multiple arc sections are here multiple arc sections that radius is identical, and its radius is identical at the radius of the projection of X-Y with fan blade 3.
B. working pressure machine carries out curlingly by the steel plate after being shaped in step a along the direction on limit, left side, extrudes required radian on the steel plate after shaping, obtains required fan blade 3.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (1)
1. a manufacture method for high efficiency motor BI fan blade, is characterized in that, comprises the following steps:
A. by carbon structural steels steel plate CUT cutting forming, steel plate after shaping comprises upper side edge, lower side, limit, left side, right edge, the length of upper side edge is less than the length of lower side, described right edge is multi-line section SPL, described multi-line section SPL is towards left side edge direction bending, described multi-line section SPL is the SPL obtaining by the following set point of matching: described set point is uniformly distributed in the direction that is parallel to limit, left side, and described set point to the vertical range on limit, left side increases from top to bottom successively;
B. working pressure machine carries out curlingly by the steel plate after being shaped in step a along the direction on limit, left side, extrudes required radian, obtains required fan blade.
2. manufacture method according to claim 1, is characterized in that, in step a, multi-line section SPL is the circular curve that SPL obtains after circular fitting.
3. manufacture method according to claim 2, is characterized in that, described circular curve obtains by following steps:
A '. taking fan axis as Z axis, the axial cross section of fan is that X-Y plane is set up X-Y-Z coordinate system, and wherein, the blade face of fan blade is parallel to Z axis;
B '. taking the origin of coordinates as the center of circle, on X-Y plane, do the concentric circles that several radiuses evenly increase progressively;
C '. by the concentric circles in step b ' with fan blade the projection on X-Y plane crossing and form some intersection points, on the blade face of fan blade, determine some line segments that are parallel to Z axis, the end points of described line segment bottom overlaps with the intersection point on described X-Y plane, and the relative Z axis of length of described line segment increases progressively with drawing near;
D '. the projection by said fans blade on X-Y plane launches, the blade face of the fan blade after expansion is plane, on the blade face of the fan blade after expansion, with the end points on line segment top described in multiple arc section matching step c ' and form required circular curve.
4. manufacture method according to claim 2, is characterized in that, upper side edge and the lower side of the steel plate after being shaped in step a are parallel to each other, and limit, left side is perpendicular to upper side edge and lower side.
5. manufacture method according to claim 1, is characterized in that, set point is topmost identical with the length of upper side edge to the vertical range on limit, left side, between set point topmost and the right side end points of upper side edge, is straightway; It between the right side end points of set point bottom and lower side, is the circular arc protruding towards right edge direction.
6. manufacture method according to claim 1, is characterized in that, in step a, carbon structural steels steel plate is Q215-B carbon structural steels.
7. manufacture method according to claim 1, is characterized in that, in step a, the thickness of carbon structural steels steel plate is 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210363059.8A CN102837163B (en) | 2012-09-26 | 2012-09-26 | Manufacturing method of backward inclined fan blade of high efficiency motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210363059.8A CN102837163B (en) | 2012-09-26 | 2012-09-26 | Manufacturing method of backward inclined fan blade of high efficiency motor |
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| CN102837163A CN102837163A (en) | 2012-12-26 |
| CN102837163B true CN102837163B (en) | 2014-08-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144487A (en) * | 2006-08-25 | 2008-03-19 | 三洋电机株式会社 | Axial fan and blade design method for the same |
| CN101259512A (en) * | 2008-04-18 | 2008-09-10 | 李悦 | Forming method of spiral subsection blade |
| CN101907876A (en) * | 2010-05-28 | 2010-12-08 | 沈阳高精数控技术有限公司 | Command point shaping, compressing and interpolating method suitable for numerical control device |
| CN101980819A (en) * | 2008-03-31 | 2011-02-23 | 斯奈克玛公司 | Improved method for producing a one-piece bladed disc, with temporary blade-supporting ring which is removed before a finish-milling step |
| CN101994643A (en) * | 2009-08-19 | 2011-03-30 | 严强 | Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine |
-
2012
- 2012-09-26 CN CN201210363059.8A patent/CN102837163B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144487A (en) * | 2006-08-25 | 2008-03-19 | 三洋电机株式会社 | Axial fan and blade design method for the same |
| CN101980819A (en) * | 2008-03-31 | 2011-02-23 | 斯奈克玛公司 | Improved method for producing a one-piece bladed disc, with temporary blade-supporting ring which is removed before a finish-milling step |
| CN101259512A (en) * | 2008-04-18 | 2008-09-10 | 李悦 | Forming method of spiral subsection blade |
| CN101994643A (en) * | 2009-08-19 | 2011-03-30 | 严强 | Wind wheel structure and wind wheel installation method of lift force vertical axis wind turbine |
| CN101907876A (en) * | 2010-05-28 | 2010-12-08 | 沈阳高精数控技术有限公司 | Command point shaping, compressing and interpolating method suitable for numerical control device |
Non-Patent Citations (2)
| Title |
|---|
| 电机直叶片离心风扇的三维流场分析;齐沛玉;《上海大中型电机》;20071231(第3期);全文 * |
| 齐沛玉.电机直叶片离心风扇的三维流场分析.《上海大中型电机》.2007,(第3期), |
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Granted publication date: 20140806 Termination date: 20180926 |