CN104416141B - Forming method and die for amorphous alloy gear - Google Patents
Forming method and die for amorphous alloy gear Download PDFInfo
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- CN104416141B CN104416141B CN201310379849.XA CN201310379849A CN104416141B CN 104416141 B CN104416141 B CN 104416141B CN 201310379849 A CN201310379849 A CN 201310379849A CN 104416141 B CN104416141 B CN 104416141B
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Abstract
The invention provides a forming method for an amorphous alloy gear. The method comprises the steps of S1, mounting at least two tooth-shaped embedding block into a forming die, wherein the tooth-shaped embedding blocks and the forming die are combined to form a die cavity; S2, pouring liquid amorphous alloy into the die cavity of the die, and then casting to form gears; S3, propping out the tooth-shaped embedding blocks and the gears from the die cavity; S4, separating the tooth-shaped embedding blocks and the gears, wherein the total teeth of the at least two tooth-shaped embedding blocks are as much as the formed gears; the shape of a tooth surface formed by the combination of the tooth-shaped embedding blocks is reversed to that of the tooth surfaces of the formed gears. The invention also provides a die for the forming method for the amorphous alloy gear. The method has the advantages that the tooth surfaces are in contact with the reversed embedding blocks, the reversed embedding blocks and the gears are propped out from the die cavity together, thus the precision of the tooth surfaces is not influenced, the tooth surfaces are formed at a time, and the machining is saved.
Description
Technical field
The invention belongs to field of machining, more particularly to a kind of non-crystaline amorphous metal gear forming method and mould therefor.
Background technology
In modern age machine, gear or spline drived are a kind of modal machine drivings, it be transmission machine power and
A kind of form of motion, has become indispensable drive disk assembly in engineering goods middle gear or spline, has been that engineering goods are important
Base parts and components.In automobile industry, the basic transmission element that gear and spline are wanted as automobile primary, its quality directly affect vapour
The noise of car, stationarity and service life.Gear and spline quality critical wearability and dimensional accuracy for the flank of tooth, conventional gear
With spline due to being generally prepared from using steel, the soft good machine-shaping of steel is needed in preparation process, the flank of tooth after molding, is wished
Firmly it is good it is wear-resisting increase the service life, so usually using the Surface hardening treatment such as nitriding carburizing, and such process is to sacrifice tooth
The precision in face is cost, i.e., conventional flank of tooth height is prepared precision and can not be got both with high-wearing feature.Therefore people need a kind of new
Material can better meet the molding of profile of tooth product and use requirement.
Amorphous alloy material is the new material that 20 th century laters are developed rapidly, with many compared with crystalline material
Excellent performance, Zr base noncrystal alloys particularly therein have high intensity, high resiliency, high rigidity, high-wearing feature, high anti-corrosion
Property and excellent forming property, for the parts such as gear, have in terms of hardness, wear-resisting, corrosion-resistant, yield stress significantly
Advantage.
The patent of Publication No. CN1846085A is disclosed and prepares gear product using non-crystaline amorphous metal, is die cast, is deposited
In drafting angle, the little gear of the simple flank of tooth can only be accomplished, once tooth surface shape is complicated, be involved in follow-up machining, destruction
The concordance and the precision of size of product, thus requirement to non-crystalline material performance it is also high (tensile strength 1500MPa or
Hv500).The product flank of tooth can not directly be made and directly stretch or complex-curved, limit non-crystaline amorphous metal on high-quality flank of tooth class product
Application.
A kind of solution turbine profile of tooth product depanning difficulty method is disclosed in the patent of Publication No. CN1583321A, this is special
Sharp method is directed to kirsite, turbine product, moulding by casting mode.Kirsite intensity hardness is not high, the pressure that pouring type is produced
Less, insert in this way by horizontal displacement can and product stripping.It is high for non-crystaline amorphous metal hardness, using die casting side
The pressure of formula molding is big, and this kind of mode is it is difficult to ensure that product size precision.Simultaneously the method can not realize inner toothed surface product into
Type.
The content of the invention
To solve, existing gear is high to prepare the technical problem that precision can not get both with high-wearing feature to the present invention, there is provided a kind of
The forming method and mould therefor of the good non-crystaline amorphous metal gear of high precision, high-wearing feature.
The invention provides a kind of forming method of non-crystaline amorphous metal gear, the method is comprised the following steps：
S1, profile of tooth insert is installed in mould, profile of tooth insert combines to form die cavity with mould；
S2 and then liquid non-crystaline amorphous metal is injected in the die cavity of mould, die casting forms gear；
S3, profile of tooth insert is ejected into die cavity together with gear；
S4, separately profile of tooth insert and gear；
Wherein, the profile of tooth insert is at least the tooth of two parts, total number of teeth of the profile of tooth insert and the gear of molding
Number is identical, and the tooth surface shape that profile of tooth insert is combined into is contrary with the gear teeth face of molding.
The method of the present invention is contacted with transoid insert due to the flank of tooth, and transoid insert is ejected die cavity together with gear, no
Affect the precision of the flank of tooth, flank of tooth one-shot forming, it is no longer necessary to mach forming method.
Present invention also offers a kind of forming method mould of non-crystaline amorphous metal gear, the mould include bottom plate,
Male model, upper mounted plate, master mold, ejecting mechanism and profile of tooth insert；The bottom plate is detachably fixed with male model and is connected, it is described on
Fixed plate is detachably fixed with master mold and is connected, and fixed plate and bottom plate connect；The profile of tooth insert may be mounted at
In male model, and die cavity is formed together with male model and master mold；The ejecting mechanism is contacted through male model with profile of tooth insert；The profile of tooth
Insert is at least two parts, and total number of teeth of the profile of tooth insert is identical with the number of teeth of the gear of molding, and profile of tooth insert is combined into
Tooth surface shape it is contrary with the gear teeth face of molding.
The mould of the present invention, during die casting, as non-crystaline amorphous metal liquid is formed in die cavity, transoid insert and gear one during ejection
Rise and be ejected die cavity, do not affect the precision of the flank of tooth, flank of tooth one-shot forming, it is no longer necessary to mach forming method.
Description of the drawings
Fig. 1 is the sectional view of the forming method mould of the non-crystaline amorphous metal gear of the present invention；
Fig. 2 is the structural representation of the external gear with profile of tooth insert of an embodiment；
Fig. 3 is the sectional view of Fig. 2；
Fig. 4 is the structural representation of the internal gear with profile of tooth insert of an embodiment；
Fig. 5 is the sectional view of Fig. 4.
As Figure 1-Figure 5：
1- bottom plates, 2- male models, 3- upper mounted plates, 4- master molds, 5- profile of tooth inserts, 6- die cavitys, 7- ejecting mechanisms, 8- limits
Position block, 51- the first profile of tooth inserts, 52- the second profile of tooth inserts, the 3rd profile of tooth inserts of 53-, the 4th profile of tooth inserts of 54-.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain
The present invention, is not intended to limit the present invention.
The invention provides a kind of forming method of non-crystaline amorphous metal gear,
Comprise the following steps：
S1, profile of tooth insert is installed in mould, profile of tooth insert combines to form die cavity with mould；
S2 and then liquid non-crystaline amorphous metal is injected in the die cavity of mould, die casting forms gear；
S3, profile of tooth insert is ejected into die cavity together with gear；
S4, separately profile of tooth insert and gear；
Wherein, the profile of tooth insert is at least the tooth of two parts, total number of teeth of the profile of tooth insert and the gear of molding
Number is identical, and the tooth surface shape that profile of tooth insert is combined into is contrary with the gear teeth face of molding.
The present invention, has no particular limits to amorphous alloy material, can be various non-crystaline amorphous metals commonly used in the art.For
Make the wearability of gear more preferable, it is preferable that the elastic strain limit of the non-crystaline amorphous metal is more than 1%, and elastic modelling quantity is less than
130GPa, the tensile strength of the non-crystaline amorphous metal are more than 1000MPa, and the Vickers hardness of the non-crystaline amorphous metal is more than 450Hv.
The invention provides a kind of forming method mould of non-crystaline amorphous metal gear, the mould includes bottom plate, public affairs
Mould, upper mounted plate, master mold, ejecting mechanism and profile of tooth insert；The bottom plate is detachably fixed with male model and is connected, described solid
Fixed board is detachably fixed with master mold and is connected, and fixed plate and bottom plate connect；The profile of tooth insert may be mounted at public affairs
In mould, and die cavity is formed together with male model and master mold；The ejecting mechanism is contacted through male model with profile of tooth insert；The profile of tooth edge
Block is at least two parts, and total number of teeth of the profile of tooth insert is identical with the number of teeth of the gear of molding, and profile of tooth insert is combined into
Tooth surface shape is contrary with the gear teeth face of molding.
Preferably, the profile of tooth insert one side is provided with profile of tooth, and another side is the bright finish for being provided with draft angle.
Preferably, the draft angle is 1-45 °.
Preferably, the mould is external gear mould therefor.
Preferably, the profile of tooth insert is equal two parts composition.
Preferably, the mould is internal gear mould therefor, and the profile of tooth insert at least three parts constitute；The profile of tooth
Insert is transoid insert, and also including limited block, the limited block is located in the space that transoid insert is formed the transoid insert.
Preferably, the profile of tooth insert is equal three parts composition.
In the present invention, the material of the profile of tooth insert has no particular limits, and can be the material of various easy molding, be
Make profile of tooth insert easy to process, it is preferable that the material hardness of the profile of tooth insert is 50-350Hv.In order to gear faster
The molding of speed, it is preferable that the thermal conductivity of the material of the profile of tooth insert is more than 20J/mk.The material of the transoid insert can be in short-term
Resistance to uniform temperature is indeformable, i.e., indeformable between the Tg-Tm of non-crystaline amorphous metal.
It is usually used in the fields such as IT, automobile, clock and watch with the gear that the method for the present invention is prepared.
A kind of forming method of non-crystaline amorphous metal gear of the invention is further described with mould below by accompanying drawing.Such as
Shown in Fig. 1, the present invention provides a kind of forming method mould of non-crystaline amorphous metal gear, including bottom plate 1, male model 2, upper fixation
Plate 3, master mold 4, ejecting mechanism 7 and profile of tooth insert 5；
Bottom plate 1 is detachably fixed with male model 2 and is connected, and upper mounted plate 3 is detachably fixed with master mold 4 and is connected, upper fixation
Plate 3 and bottom plate 1 connect；Profile of tooth insert 5 is may be mounted in male model 2, and die cavity 6 is formed together with male model 2 and master mold 4；
Ejecting mechanism 7 is contacted through male model 2 with profile of tooth insert 5；
Profile of tooth insert 5 is at least two parts, and total number of teeth of profile of tooth insert 5 is identical with the number of teeth of the gear of molding, profile of tooth
The tooth surface shape that insert 5 is combined into is contrary with the gear teeth face of molding.
In one embodiment of this invention, 5 one side of profile of tooth insert is provided with profile of tooth, and another side is the light for being provided with draft angle
Face.Draft angle can reduce the friction between profile of tooth insert and male model, be conducive to profile of tooth insert to depart from male model,
Preferably, draft angle is 1-45 °, more preferably 3-15 °.
In one embodiment of this invention, mould be external gear mould therefor, profile of tooth insert 5 be at least two parts composition.
So profile of tooth insert under the effect of no external force, can be separated into two parts after male model is departed from automatically, and the flank of tooth to gear
Without rubbing, can be very good to include the flank of tooth of gear.
In one embodiment of this invention, profile of tooth insert is equal two parts composition.I.e. as described in Fig. 2 and Fig. 3, profile of tooth
Insert includes the first profile of tooth insert 51 and the second profile of tooth insert 52.Profile of tooth insert is equal two parts, conveniently can be operated.
In one embodiment of this invention, mould is internal gear mould therefor, and profile of tooth insert at least three parts constitute；Instead
Type insert also includes limited block 8, and limited block is located in the space that transoid insert is formed.As described in Fig. 4 and Fig. 5, profile of tooth insert bag
Include the first profile of tooth insert 51, the second profile of tooth insert 52, the 3rd profile of tooth insert 53 and the 4th profile of tooth insert 54.Because the profile of tooth of lubrication groove
Insert is, in the inside of gear, to have no idea outwards to be automatically separated, for the flank of tooth that do not wear and tear, can only inward portion from.This
Bright profile of tooth insert middle setting has a limited block, when profile of tooth insert departs from male model, as profile of tooth insert has draft angle, institute
It is easy to depart from profile of tooth insert with limited block, then just there is in the middle of profile of tooth insert a space, profile of tooth insert is i.e. to middle sky
Between move, be automatically separated with gear.The flank of tooth of gear is not rubbed, can be very good to protect the flank of tooth of gear.
In one embodiment of this invention, the profile of tooth insert is equal three parts composition.Profile of tooth insert is equal
Three parts, both can be with easily separated, it is also possible to convenient to operate.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (13)
1. a kind of forming method of non-crystaline amorphous metal gear, it is characterised in that comprise the following steps：
S1, profile of tooth insert is installed in mould, profile of tooth insert combines to form die cavity with mould；
S2 and then liquid non-crystaline amorphous metal is injected in the die cavity of mould, die casting forms gear；
S3, profile of tooth insert is ejected into die cavity together with gear；
S4, separately profile of tooth insert and gear；
Wherein, the profile of tooth insert is at least two parts, total number of teeth of the profile of tooth insert and the number of teeth phase of the gear of molding
Together, the tooth surface shape that profile of tooth insert is combined into is contrary with the gear teeth face of molding.
2. the forming method of non-crystaline amorphous metal gear according to claim 1, it is characterised in that the elasticity of the non-crystaline amorphous metal
Strain limit is more than 1%, and elastic modelling quantity is less than 130GPa.
3. the forming method of non-crystaline amorphous metal gear according to claim 1, it is characterised in that the stretching of the non-crystaline amorphous metal
Intensity is more than 1000MPa.
4. the forming method of non-crystaline amorphous metal gear according to claim 1, it is characterised in that the Vickers of the non-crystaline amorphous metal
Hardness is more than 450Hv.
5. a kind of forming method mould of non-crystaline amorphous metal gear, it is characterised in that the mould include bottom plate, male model,
Upper mounted plate, master mold, ejecting mechanism and profile of tooth insert；The bottom plate is detachably fixed with male model and is connected, fixed
Plate is detachably fixed with master mold and is connected, and fixed plate and bottom plate connect；The profile of tooth insert is arranged in male model, and
Die cavity is formed together with male model and master mold；The ejecting mechanism is contacted through male model with profile of tooth insert；The profile of tooth insert is at least
For two parts, total number of teeth of the profile of tooth insert is identical with the number of teeth of the gear of molding, the flank of tooth shape that profile of tooth insert is combined into
Shape is contrary with the gear teeth face of molding.
6. mould according to claim 5, it is characterised in that the profile of tooth insert one side is provided with profile of tooth, and another side is
It is provided with the bright finish of draft angle.
7. mould according to claim 6, it is characterised in that the draft angle is 1-45 °.
8. mould according to claim 5, it is characterised in that the mould is external gear mould therefor.
9. mould according to claim 8, it is characterised in that the profile of tooth insert is equal two parts composition.
10. mould according to claim 5, it is characterised in that the mould is internal gear mould therefor, the profile of tooth edge
Block is at least three parts composition；The profile of tooth insert is transoid insert, and the transoid insert is also including limited block, the limited block
In the space that transoid insert is formed.
11. moulds according to claim 10, it is characterised in that the profile of tooth insert is equal three parts composition.
12. moulds according to claim 5-11 any one, it is characterised in that the material hardness of the profile of tooth insert is
50-350Hv。
13. moulds according to claim 5-11 any one, it is characterised in that the thermal conductivity of the material of the profile of tooth insert
Rate is more than 20J/mk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379849.XA CN104416141B (en) | 2013-08-28 | 2013-08-28 | Forming method and die for amorphous alloy gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379849.XA CN104416141B (en) | 2013-08-28 | 2013-08-28 | Forming method and die for amorphous alloy gear |
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| Publication Number | Publication Date |
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| CN104416141A CN104416141A (en) | 2015-03-18 |
| CN104416141B true CN104416141B (en) | 2017-05-03 |
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| CN201310379849.XA Active CN104416141B (en) | 2013-08-28 | 2013-08-28 | Forming method and die for amorphous alloy gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107335784A (en) * | 2017-09-08 | 2017-11-10 | 广西璟宏机械制造有限公司 | A kind of new flywheel casting mould |
| CN107716579A (en) * | 2017-11-03 | 2018-02-23 | 六安市金龙齿轮有限公司 | The Precision Machining mould and its gear working method of a kind of gear |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5746879A (en) * | 1980-05-30 | 1982-03-17 | Aisin Chem Co Ltd | Molding device for helical gear |
| JPS578040A (en) * | 1980-06-16 | 1982-01-16 | Rhythm Watch Co Ltd | Method of molding miniature type gear for use in timepiece |
| JPH04200965A (en) * | 1990-11-30 | 1992-07-21 | Eguchi Diecast Kk | Method for producing gear |
| JPH08309499A (en) * | 1995-05-19 | 1996-11-26 | Eguchi Diecast Kk | Method and equipment for manufacturing gear |
| JP3808167B2 (en) * | 1997-05-01 | 2006-08-09 | Ｙｋｋ株式会社 | Method and apparatus for manufacturing amorphous alloy molded article formed by pressure casting with mold |
| JP3804201B2 (en) * | 1997-07-31 | 2006-08-02 | アイシン精機株式会社 | Mold for casting |
| CN100582529C (en) * | 2003-09-02 | 2010-01-20 | 并木精密宝石株式会社 | Precision gear, and production method of precision gear |
| CN1264626C (en) * | 2004-06-07 | 2006-07-19 | 江苏大学 | Zinc-base alloy turbine precision shaping method and special mould |
| WO2009069716A1 (en) * | 2007-11-27 | 2009-06-04 | Tohoku University | Production method of internal gear and internal gear made of metallic glass |
| CN201693152U (en) * | 2010-05-17 | 2011-01-05 | 上海广濑-关勒铭精密机械有限公司 | Core-pulling auxiliary mechanism inside die-casting part |
| CN102563006B (en) * | 2011-12-15 | 2016-09-07 | 比亚迪股份有限公司 | Gear |
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