CN2133385Y - Centrifugal back bending impeller b sample vane, wax loss casting mould - Google Patents
Centrifugal back bending impeller b sample vane, wax loss casting mould Download PDFInfo
- Publication number
- CN2133385Y CN2133385Y CN 92209635 CN92209635U CN2133385Y CN 2133385 Y CN2133385 Y CN 2133385Y CN 92209635 CN92209635 CN 92209635 CN 92209635 U CN92209635 U CN 92209635U CN 2133385 Y CN2133385 Y CN 2133385Y
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- impeller
- module
- blade profile
- mould
- back ward
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- Expired - Fee Related
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Abstract
The utility model relates to a centrifugal back bending impeller B sample vane and wax loss casting mould, which belongs to a wax loss casting process. The utility model can manufacture high efficiency B sample backward-bent impeller. The mould comprises a module cover 1, a module 2, compression nuts 3 and a soleplate 4, which has the advantages that the existing wax loss casting process and device can be used to manufacture the backward-bent impeller; the mould is formed by nonuniform B sample surface, and the strength and aerodynamic performance of the backward-bent impeller can be enhanced. The module 2 is formed by adopting the master model casting, which can save cost price by comparing with single process. The utility model has three pieces except module 2, so the operation is simple.
Description
The utility model relates to centrifugal-flow compressor back ward impeller B batten blade profile and loses cured finish cast die.
The centrifugal-flow compressor back ward impeller is mainly used in internal-combustion engine booster, because the blade profile of impeller has back bent angle, can improve the compressor performance, thereby improve the economy of boosting internal combustion engine, and be energy-conservation effective measures.Adopt silicon rubber technology widespread production back ward impeller in the eighties abroad.But present domestic silicon rubber technology remains in problem, is left to be desired, and makes back ward impeller and use the cured precision casting process of existing mistake, is subjected to the restriction that bent angle behind the back ward impeller influences withdrawing pattern.
Blade profile curved surface on the past impeller mold, mostly be directly to process according to design parameter, it is to be formed along the Z axle is folded mutually by the curve on the X-Y plane, and this curved surface claims blade profile, therefore blade profile is rough on the Z direction, and it is influential to the intensity and the aerodynamic performance of impeller blade profile.
We retrieve its impeller working surface formation line of a kind of centrifugal-flow compressor active wheel (CN1035166A) most of is hyperbola, and blade is isometric, is suitable for fixed centrifugal compressor and adopts.
We also retrieve a kind of centrifugal fan impeller mould (CN87212706U), and it is a kind of assembling die, has improved manual pasting forming process, makes the integral wheel casting become possibility, but does not relate to blade profile, can't implement more complicated blade profile.
The purpose of this utility model is at national conditions, overcome the deficiency of above-mentioned prior art, improve the design of back ward impeller mould, improve the blade profile design of mould, thereby make precision casting process can make efficient back ward impeller, the mould blade profile adopts three-dimensional uniform B-Spline curved surface, has improved blade profile intensity and aerodynamic performance, and impeller adiabatic efficiency is greatly improved.
The utility model is realized with following method:
Centrifugal back ward impeller B batten blade profile is lost cured finish cast die and is comprised: have the module overcoat 1 of impeller hub, have the some modules 2 of palintrope blade profile, compress big nut 3, have the chassis 4 that the back ward impeller wheel disc makes the module location.Mould is connected as a single entity die coat 1 and base plate 4 by compressing big nut 3, thereby has guaranteed the concentricity of impeller hub and wheel disc and palintrope blade profile, and has compressed whole modules 2.
Wherein module 2, are as the die casting moulding with a pair of master mold (or two pairs, decide according to the impeller blade profile).Module 2 is designed to the outer meridian runner of blade profile, has little epitaxial surface, thereby has guaranteed free withdrawing pattern.Blade profile design on the master mold, the design point to former impeller provides has carried out the uniform B-Spline surface modeling, and has carried out the CAD/CAM(computer aided design/computer aided machine) complete routine processes, on the multi-axis numerical control milling machine, process.
The utility model compared with prior art has following advantage: can adopt existing lost wax casting technology, device fabrication back ward impeller, this will promote supercharging of internal combustion engine, power-saving technology development.The mould blade profile has improved the intensity and the aerodynamic performance of back ward impeller blade profile through uniform B-Spline surface modeling and processing.
Description of drawings:
Accompanying drawing 1 loses cured finish cast die profile for centrifugal back ward impeller B batten blade profile
Accompanying drawing 2 is that centrifugal back ward impeller B batten blade profile is lost the curved surface distribution map on the cured finish cast die master mold
The three-dimensional B-spline surface figure that accompanying drawing 3 is selected for use for embodiment SY-133
With the SY-133 back ward impeller that the utility model is implemented, its compressor peak efficiency is 0.79, and domestic other scheme does not reach as yet.
Module (2) adopts the master mold cast molding, and is more cost-saved than individual module processing.Mould has only three except that module (2), make easy and simple to handle.Curved surface on the master mold distributes and sees accompanying drawing 2, wherein:
(1), linear leaf principal mode face
(2), short blade principal mode face
(3), linear leaf import zero cross section
(4), short blade import zero cross section
(5), blank diameter surplus face
(6), blank outer arc surplus face
(7), import die joint
(8), outlet die joint
(9), the low arc surplus face of module
(10), module epitaxial surface
(11), little amalgamation face
The three-dimensional B-spline surface that the SY-133 back ward impeller is selected for use is seen accompanying drawing 3.
Claims (4)
1, a kind of centrifugal back ward impeller B batten blade profile is lost cured precision casting mould, it is characterized in that this mould comprises: module overcoat (1), module (2) compresses big nut (3), base plate (4).
2, lose cured finish cast die according to the described centrifugal back ward impeller B batten blade profile of claim 1, it is characterized in that module (2) is to do the die casting moulding with a pair of (or two pairs) master mold, the meridional channel of blade profile has little epitaxial surface.
3, lose cured finish cast die according to claim 1 or 2 described centrifugal back ward impeller B batten blade profiles, it is characterized in that the curved surface on the master mold of module (2) distributes by accompanying drawing 2.
4, a kind of centrifugal-flow compressor back ward impeller is characterized in that blade profile is three-dimensional uniform B-Spline curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92209635 CN2133385Y (en) | 1992-05-16 | 1992-05-16 | Centrifugal back bending impeller b sample vane, wax loss casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92209635 CN2133385Y (en) | 1992-05-16 | 1992-05-16 | Centrifugal back bending impeller b sample vane, wax loss casting mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2133385Y true CN2133385Y (en) | 1993-05-19 |
Family
ID=33762808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92209635 Expired - Fee Related CN2133385Y (en) | 1992-05-16 | 1992-05-16 | Centrifugal back bending impeller b sample vane, wax loss casting mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2133385Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125986A (en) * | 2010-11-09 | 2011-07-20 | 吴江市森泰机械制造有限公司 | Easily-operated casting mould |
| CN105945533A (en) * | 2016-05-18 | 2016-09-21 | 重庆通用工业(集团)有限责任公司 | Forming method for centrifugal fan blades |
-
1992
- 1992-05-16 CN CN 92209635 patent/CN2133385Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125986A (en) * | 2010-11-09 | 2011-07-20 | 吴江市森泰机械制造有限公司 | Easily-operated casting mould |
| CN102125986B (en) * | 2010-11-09 | 2012-12-05 | 吴江市森泰机械制造有限公司 | Easily-operated casting mould |
| CN105945533A (en) * | 2016-05-18 | 2016-09-21 | 重庆通用工业(集团)有限责任公司 | Forming method for centrifugal fan blades |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |