CN105834397A - Double-mold casting molding method for shock-resistance eccentric shaft - Google Patents
Double-mold casting molding method for shock-resistance eccentric shaft Download PDFInfo
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- CN105834397A CN105834397A CN201610355433.8A CN201610355433A CN105834397A CN 105834397 A CN105834397 A CN 105834397A CN 201610355433 A CN201610355433 A CN 201610355433A CN 105834397 A CN105834397 A CN 105834397A
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- Prior art keywords
- casting
- eccentric shaft
- molding method
- wax
- mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a double-mold casting molding method for a shock-resistance eccentric shaft. The double-mold casting molding method includes the steps that firstly a ceramic mold is manufactured through a lost-wax process; then molten metal is cast on the outer surface of the ceramic mold, and a metal layer is formed after the molten metal is cooled; large pressure is added to a casting hole of the ceramic mold, casting liquid is poured into the casting hole of the ceramic mold, and the casting liquid breaks through the ceramic mold and is then molded in the metal layer; and demolding is conducted after casting molding, a residual potsherd layer on the surface is ground and removed, and then heat treatment and surface treatment are conducted on a product. By means of the double-molding casting molding method, the casting technology is improved, the novel double-mold casting method is used for replacing a traditional lathing technology, and the eccentric shaft which is excellent in shock-resistance performance and long in service life can be produced.
Description
Technical field
The present invention relates to engineering machinery field, specifically a kind of shock resistance type eccentric shaft bimodulus casting and molding method.
Background technology
Eccentric shaft is the same with its name, its center not at the center of axis, general axle, can only drive workpiece rotation, but eccentric shaft, not only can transmit rotation, revolution can also be transmitted simultaneously.Eccentric shaft is fixing with on electric machine rotational axis generally by eccentric orfice, when electric motor starting, does cam motion.Therefore automobile, electromotor, pump etc. it are widely used in.
Owing to eccentric shaft is higher for required precision, the processing of current eccentric shaft uses lathe process more, adds the processing methods such as expansion sleeve method including Double Tops point method, three-jaw self-centering chuck shimming method, excentric sleeve method, excentric sleeve.The eccentric shaft precision that the benefit of Vehicle Processing is that production efficiency is high, process is higher, is suitable for large-scale production.The special eccentric shaft needing to be often subject to external impacts for some, the product that conventional Vehicle Processing goes out is shorter for often service life, needs frequently to change.
In traditional casting technique, owing to casting liquid is difficult to be evenly distributed in a mold, rear foundry goods of having cast easily produces bubble and cavity, affects the mechanical property of foundry goods.Traditional metal die casting, finished product accuracy is relatively low, it is impossible to meet the job demand of eccentric shaft.The ceramic die that lost-wax process is prepared ensure that finished product accuracy, but ceramic die itself is more crisp, and casting, hydraulic coupling is slightly larger will break through mould.
Summary of the invention
The present invention is to solve problem of the prior art, provide a kind of shock resistance type eccentric shaft bimodulus casting and molding method, utilize double molds to cast, the advantage with metal die and ceramic die, the eccentric shaft shock resistance processed is outstanding, and service life is long.
One shock resistance type eccentric shaft bimodulus casting and molding method of the present invention, comprises the following steps:
1) lost-wax process is utilized to manufacture ceramic die；
2) at ceramic die outer surface casting metals liquid, layer of metal layer after cooling, is formed；
3) in the plug hole of ceramic die, casting liquid is injected in pressurization, and pressure is 2-3 times of air pressure, and casting liquid breaks through molding in the metal layer after ceramic die；
4) demoulding after cast molding, first polishing is removed the potsherd layer of surface residual, then product is carried out heat treatment and surface processes.
Lost-wax process described in step 1) manufactures ceramic die and comprises the following steps, and first replicates eccentric shaft with wax, is then immersed in containing making waxed copy cover last layer outer ceramic in pottery pond, then melts the wax in mould afterwards, and detaches mold.
The described eccentric shaft replicated with wax, slightly larger than prototype eccentric shaft, needs to grind off the eccentric shaft outer wall of a part owing to polishing off potsherd layer, so just slightly larger by modelling when preparing wax pattern at the beginning, facilitates follow-up polishing.
In traditional casting technique, owing to casting liquid is difficult to be evenly distributed in a mold, rear foundry goods of having cast easily produces bubble and cavity, affects the mechanical property of foundry goods.By the present invention in that with double stack mold, the pressure that casting liquid increase is bigger can be given during casting, thus greatly reduce bubble and the generation in cavity in foundry goods.
The present invention has the beneficial effects that: improve foundry engieering, and the method cast with bimodulus replaces traditional Vehicle Processing technique, can produce shock resistance outstanding, service life length eccentric shaft.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be further described.
A kind of shock resistance type eccentric shaft bimodulus casting and molding method, comprises the following steps:
1) lost-wax process is utilized to manufacture ceramic die, first replicate eccentric shaft, 0.5-1cm after duplicated waxed eccentric shaft thickens again with wax, be then immersed in making waxed copy cover last layer outer ceramic containing in pottery pond, melt the wax in mould the most afterwards, and detach mold.
2) at ceramic die outer surface casting metals liquid, layer of metal layer after cooling, is formed；
3) in the plug hole of ceramic die, casting liquid is injected in pressurization, and pressure is 2-3 times of air pressure, and casting liquid breaks through molding in the metal layer after ceramic die；
4) demoulding after cast molding, first polishing is removed the potsherd layer of surface residual, then product is carried out heat treatment and surface processes.
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, it should be pointed out that; for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvement, these improvement also should be regarded as protection scope of the present invention.
Claims (3)
1. a shock resistance type eccentric shaft bimodulus casting and molding method, it is characterised in that comprise the following steps:
1) lost-wax process is utilized to manufacture ceramic die；
2) at ceramic die outer surface casting metals liquid, layer of metal layer after cooling, is formed；
3) in the plug hole of ceramic die, casting liquid is injected in pressurization, and pressure is 2-3 times of air pressure, and casting liquid breaks through molding in the metal layer after ceramic die；
4) demoulding after cast molding, first polishing is removed the potsherd layer of surface residual, then product is carried out heat treatment and surface processes.
Shock resistance type eccentric shaft bimodulus casting and molding method the most according to claim 1, it is characterized in that: the lost-wax process described in step 1) manufactures ceramic die and comprises the following steps, first replicate eccentric shaft with wax, it is then immersed in making waxed copy cover last layer outer ceramic containing in pottery pond, melt the wax in mould the most afterwards, and detach mold.
Shock resistance type eccentric shaft bimodulus casting and molding method the most according to claim 2, it is characterised in that: the described eccentric shaft with wax duplication is slightly larger than prototype eccentric shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355433.8A CN105834397A (en) | 2016-05-26 | 2016-05-26 | Double-mold casting molding method for shock-resistance eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355433.8A CN105834397A (en) | 2016-05-26 | 2016-05-26 | Double-mold casting molding method for shock-resistance eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105834397A true CN105834397A (en) | 2016-08-10 |
Family
ID=56595771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610355433.8A Pending CN105834397A (en) | 2016-05-26 | 2016-05-26 | Double-mold casting molding method for shock-resistance eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105834397A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579572A (en) * | 1980-06-20 | 1982-01-19 | Daido Steel Co Ltd | Casting method |
| JPS58157548A (en) * | 1982-03-15 | 1983-09-19 | Toshiba Corp | Production of mold |
| CN1217958A (en) * | 1997-11-26 | 1999-06-02 | 北京航空航天大学 | Process for making cores for casting process |
| EP1084778A1 (en) * | 1999-09-16 | 2001-03-21 | Caterpillar Inc. | Mold assembly and method for pressure casting elevated melting temperature materials |
| CN201164900Y (en) * | 2008-02-29 | 2008-12-17 | 肇庆市广盛铸业有限公司 | Composite metal mould |
| CN101480699A (en) * | 2009-01-23 | 2009-07-15 | 湖南天雁机械有限责任公司 | Method for manufacturing turbo-charger blower impeller mold |
-
2016
- 2016-05-26 CN CN201610355433.8A patent/CN105834397A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS579572A (en) * | 1980-06-20 | 1982-01-19 | Daido Steel Co Ltd | Casting method |
| JPS58157548A (en) * | 1982-03-15 | 1983-09-19 | Toshiba Corp | Production of mold |
| CN1217958A (en) * | 1997-11-26 | 1999-06-02 | 北京航空航天大学 | Process for making cores for casting process |
| EP1084778A1 (en) * | 1999-09-16 | 2001-03-21 | Caterpillar Inc. | Mold assembly and method for pressure casting elevated melting temperature materials |
| CN201164900Y (en) * | 2008-02-29 | 2008-12-17 | 肇庆市广盛铸业有限公司 | Composite metal mould |
| CN101480699A (en) * | 2009-01-23 | 2009-07-15 | 湖南天雁机械有限责任公司 | Method for manufacturing turbo-charger blower impeller mold |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160810 |