CN101574727A - Fastening-embedding type metal gravity casting die for large-sized gear box body - Google Patents
Fastening-embedding type metal gravity casting die for large-sized gear box body Download PDFInfo
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- CN101574727A CN101574727A CNA2009100277600A CN200910027760A CN101574727A CN 101574727 A CN101574727 A CN 101574727A CN A2009100277600 A CNA2009100277600 A CN A2009100277600A CN 200910027760 A CN200910027760 A CN 200910027760A CN 101574727 A CN101574727 A CN 101574727A
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Abstract
The invention discloses a fastening-embedding type metal gravity casting die for a large-sized gear box body, which comprises an upper loose core positioning seat, an upper loose core, a lateral loose core positioning seat, a lateral loose core, a lower die holder, a stripper, a pouring head lateral die, a left and right die positioning guide holder, a left die and a right die. The stripper is arranged under the lower die holder, the left die and the right die are provided with the upper loose core positioning seat, and the lower die holder is provided with the lateral loose core positioning seat, the left and right die positioning guide holder, the pouring head lateral die and a lower loose core; the upper loose core and the lateral loose core capable of being loosed are arranged in the upper loose core positioning seat and the lateral loose core positioning seat respectively; the lower die holder is provided with the left die and the right die which can slide and are matched along a left and right matched die guide positioning key; and the left die and the right die are matched through the left and right die positioning guide holder and the left and right die guide positioning key. The fastening-embedding type metal gravity casting die for the large-sized gear box body is changed into metal gravity casting from the conventional sand casting so as to obtain gear box body parts with high dimensional precision, high air tightness, high mechanical property and attractive appearance, wherein the internal tissues of the gear box body parts have no shrinkage porosity, pores or inclusions.
Description
Technical field
The present invention relates to the casting mould field, specifically a kind of fastening-embedding type metal gravity casting die for large-sized gear box body.
Background technology
Gear housing is the main parts size of present domestic and international long-range pipeline valve automatic controller, is widely used in industries such as natural gas, chemical industry, oil, water conservancy.Because the product structure complexity, casting mould needs five direction die sinkings: product size precision height, and only inner chamber just is divided into four cavitys such as power cavity, gear cavity, electronics chamber, very easily interferes each other in the product assembling process; Products air tightness requires high, and four chamber planted agents detect by the hydraulic pressure of 3.0Mpa respectively.The pinhole rate of main machined surface reaches 2 grades of ISO10049.Because the gravitational casting of gear housing metal mold, there is bigger difficulty on the Casting Technology and on the Mould design manufacture level, therefore adopt sand casting process always, the designing requirement that its sand casting process method causes properties of product far not reach product has seriously restricted the popularization at home of this project.The problem that sand casting process mainly exists has:
1. poor dimensional precision, because product cavity is to be put together by many cores, the sand mold deviations is big, brings very big difficulty for machining and assembling;
2. products air tightness is poor, and sand-cast shrinkage porosite seepage is serious, and is high by the hydraulic pressure detection percent defective of product;
3. the machined surface pinhole rate is overproof, because foundry goods cooling velocity in sand mold is slow, the pinhole rate that causes the thick large part of product to find after processing is overproof, and scrappage is very high;
4. internal defect in cast is serious, and the foundry goods internal poles that tight or air humidity is produced under greater than 80% condition when the moisture in molding sand control is easy to generate pore, shrinkage porosite and oxidation slagging scorification defective;
5. the mechanical performance of foundry goods is low, and particularly the hardness of product is low, does not reach the product design requirement to the roughness that makes the product machined surface;
6. product surface is not attractive in appearance, and the sand-cast surface roughness is generally Ra25-100.
Summary of the invention
The objective of the invention is deficiency at the prior art existence, a kind of fastening-embedding type metal gravity casting die for large-sized gear box body that is changed into metal mold gravity casting by traditional sand casting is proposed, thereby obtain to have the dimensional accuracy height, the air-tightness height, the gear housing part of the good looking appearance that mechanical performance height, interior tissue do not have shrinkage porosite, pore, be mingled with.
Technical scheme of the present invention is:
A kind of fastening-embedding type metal gravity casting die for large-sized gear box body, comprise the positioning seat of loosing core, on loose core, side core-pulling positioning seat, side take out core, die shoe, stripping attachment, cast gate side form, left and right sides mould positioning and guiding seat, left mould and right mould, described stripping attachment is arranged on the die shoe below, left side mould and right mould are provided with the positioning seat of loosing core, die shoe be provided with side core-pulling positioning seat, left and right sides mould positioning and guiding seat, cast gate side form and under loose core, on loose core be respectively equipped with in positioning seat and the side core-pulling positioning seat can twitch on loose core and side is taken out core; Die shoe is provided with can be along the left mould and the right mould of left and right sides matched moulds guide-localization key slip matched moulds, and left mould and right mould cooperate with left and right sides mould guide-localization key by left and right sides mould positioning and guiding seat.
Described left and right sides mould positioning and guiding seat is provided with left and right sides mould guide-localization key.
Described die shoe is provided with left and right sides modular angle to alignment pin.
Die shoe is provided with left and right sides mould horizontally-guided key.
Be provided with the die shoe positioning key between described die shoe and the stripping attachment.
Described stripping attachment below is provided with the stripping attachment positioning key.
Described side core-pulling positioning seat is provided with side core-pulling positioning and guiding key.
The positioning seat of loosing core on described is provided with the positioning and guiding key of loosing core.
Loose core on described, loose core down, left mould, right mould, side take out and be respectively equipped with electric heating tube, temperature sensor and equipment for cooling die in core and the die shoe.
The present invention is owing to change foundry goods into metal mold gravity casting by sand casting, thereby has the following advantages:
1, all motions of mould of the present invention and fixing parts all adopt positioning seat and guide-localization key to do the location of omnibearing direction and position, the down gate side form that is fixed on simultaneously on the die shoe separates with left and right sides mould, left and right sides die body is heated evenly, avoided the mould dilatancy that high-temperature liquid metal moment temperature rise causes in casting process, guaranteed the high accuracy to size grade of foundry goods, accuracy to size has reached the ISO8062CT6 level.
, the present invention improved the air-tightness of product, in four chambeies such as power cavity, gear cavity, electronics chamber respectively the hydraulic pressure by 3.0Mpa detect qualification rate 100%.
3, the present invention has improved product quality, and foundry goods internal needle cell size has reached ISO10049 requirement more than 2 grades, has avoided the casting flaw such as internal porosity, oxide slag inclusion of foundry goods, and surface roughness have reached Ra3.2.
4, the present invention has improved mechanical performance of products, and the tensile strength of product and hardness have improved 20%-25% respectively, and percentage elongation has increased 30%-50%, has cancelled the T6 heat treatment of foundry goods.
5, improved the production efficiency of foundry goods, behind the employing metal mold gravity casting, production efficiency has improved 3-5 doubly than sand casting, satisfies the large-scale production needs fully.
Description of drawings
Fig. 1 is the structural representation of facing of the present invention.
Fig. 2 is a plan structure schematic diagram of the present invention.
Fig. 3 is a perspective view of the present invention.
Marginal data: 1, left and right sides matched moulds guide finger, 2, on the positioning seat of loosing core, 3, on loose core, 4, side core-pulling positioning seat, 5, left and right sides mould positioning and guiding seat, 6, left and right sides mould guide-localization key, 7, left and right sides modular angle is to alignment pin, and 8, die shoe, 9, stripping attachment, 10, left and right sides mould horizontally-guided key, 11, the die shoe positioning key, 12, the stripping attachment positioning key, 13, cast gate side form, 14, left mould, 15, right mould, 16, side is taken out core, 17, side core-pulling positioning and guiding key, 18, on the positioning and guiding key of loosing core.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
A kind of fastening-embedding type metal gravity casting die for large-sized gear box body, comprise the positioning seat 2 of loosing core, on loose core 3, side core-pulling positioning seat 4, side is taken out core 16, die shoe 8, stripping attachment 9, cast gate side form 13, left and right sides mould positioning and guiding seat 5, left side mould 14 and right mould 15, described stripping attachment 9 is arranged on die shoe 8 belows, left side mould 14 and right mould 15 are provided with the positioning seat 2 of loosing core, die shoe 8 is provided with side core-pulling positioning seat 4, left and right sides mould positioning and guiding seat 5, cast gate side form 13 and under loose core, on loose core be respectively equipped with in positioning seat 2 and the side core-pulling positioning seat 4 can twitch on loose core 3 and side take out core 16; Die shoe 8 is provided with can be along the left mould 14 and the right mould 15 of left and right sides matched moulds guide finger 1 slip matched moulds, and left mould 14 is connected with left and right sides mould positioning and guiding seat 5 by left and right sides mould guide-localization key 6 with right mould 15.Die shoe is provided with can be along the left mould and the right mould of left and right sides matched moulds guide-localization key slip matched moulds, and left mould and right mould cooperate with left and right sides mould guide-localization key by left and right sides mould positioning and guiding seat.
Die shoe 8 is provided with left and right sides modular angle to alignment pin 7.Die shoe 8 is provided with left and right sides mould horizontally-guided key 10.Be provided with die shoe positioning key 11 between die shoe 8 and the stripping attachment 9.
Stripping attachment 9 belows are provided with stripping attachment positioning key 12.
Side core-pulling positioning seat 4 is provided with side core-pulling positioning and guiding key 17.
On the positioning seat 2 of loosing core be provided with the positioning and guiding key 18 of loosing core.
On loose core 3, loose core down, left mould 14, right mould 15, side take out in core 16 and the die shoe 8 and be respectively equipped with electric heating tube, temperature sensor and equipment for cooling die.
Touch on the plate in casting machine with the apparatus main body location and with bolting by stripping attachment positioning key 12, device produces displacement in five direction folding mold process to avoid.The monnolithic case of gear housing part is by left mould 14 and 15 moulding of right mould, by be fixed on the left and right sides mould positioning and guiding seat 5 on the die shoe 8 and be fixed on 6 pairs of left moulds 14 of left and right sides mould positioning and guiding key on the left and right sides mould positioning and guiding seat 5 and right mould 15 in the guiding and the location of the horizontal direction and the vertical direction of folding mold process, the folding that has guaranteed left mould 14 and right mould 15 operate steadily and in the horizontal direction with the comprehensive accurate location of vertical direction.The left and right sides inner chamber of gear housing part is extracted out together with left and right sides core in the process of opening left mould 14 and right mould 15 by the core moulding that is fixed in left mould 14 and the right mould 15.The side core-pulling inner chamber of gear housing part is taken out core 16 moulding by side, is fixed on side core-pulling positioning seat 4 on the die shoe 8 and side core-pulling positioning and guiding key 17 and has guaranteed that side takes out core 16 in the folding running and the depth of parallelism of matched moulds state and angle location.Loose core on the gear housing part inner chamber by on take out core 3 moulding, by be fixed on left mould 14 and right mould 15 tops on loose core positioning seat 2 and on the positioning and guiding key 18 of loosing core guaranteed to loose core 3 in the folding running and the perpendicularity and the location of matched moulds state.The following inner chamber of loosing core of gear housing part is by the core moulding that is fixed on the die shoe 8, ejects in the process at foundry goods and extracts out.The down gate of gear housing part is by cast gate side form 13 moulding that are fixed on the die shoe 8, its effect is to be isolated in high-temperature liquid metal in the casting process to conduct heat to left mould 14 and right mould 15, avoid the moment mould dilatancy that causes of high temperature, cast gate side form 13 also plays the effect of fixing and compressing the molten metal screen pack simultaneously, prevents that foundry goods from producing pore, dreg defect.At each core of mould, each side pumping mode is respectively arranged with electric heating tube and temperature sensor and equipment for cooling die in the die shoe, finishes preheating and temperature control to mould.
Operation sequence of the present invention:
1, touches on the plate in casting machine with the mould location and with bolting by the stripping attachment positioning key, the mould die pad is linked to each other with the casting machine ejector with connector.Be connected each side form, each core also fastening with template with bolt.
2, alloy melting: alloy designations: ZL101A, 760-780 ℃ of alloy melting temperature
3, casting pouring: pouring temperature 690-700 ℃, 350 ℃ of mold temperatures, 20 seconds durations of pouring.
4, after the foundry goods cooled and solidified, open mould, take out foundry goods, obtain large gear casing cast member.
The hardware that the present invention does not relate to all can pass through existing techniques in realizing.
Claims (9)
1, a kind of fastening-embedding type metal gravity casting die for large-sized gear box body, it is characterized in that comprising the positioning seat (2) of loosing core, on loose core (3), side core-pulling positioning seat (4), side is taken out core (16), die shoe (8), stripping attachment (9), cast gate side form (13), left and right sides mould positioning and guiding seat (5), left side mould (14) and right mould (15), described stripping attachment (9) is arranged on die shoe (8) below, left side mould (14) and right mould (15) are provided with the positioning seat of loosing core (2), die shoe 8 is provided with side core-pulling positioning seat (4), left and right sides mould positioning and guiding seat (5), cast gate side form (13) and under loose core, on loose core be respectively equipped with in positioning seat (2) and the side core-pulling positioning seat (4) can twitch on loose core (3) and side is taken out core (16); Die shoe (8) is provided with can be along the left mould (14) and the right mould (15) of left and right sides matched moulds guide-localization key (6) slip matched moulds, and left mould (14) and right mould (15) cooperate with left and right sides mould guide-localization key (6) by left and right sides mould positioning and guiding seat (5).
2, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that described die shoe (8) is provided with left and right sides modular angle to alignment pin (7).
3, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that described die shoe (8) is provided with left and right sides mould horizontally-guided key (10).
4, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that being provided with die shoe positioning key (11) between described die shoe (8) and the stripping attachment (9).
5, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that described stripping attachment (9) below is provided with stripping attachment positioning key (12).
6, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that described side core-pulling positioning seat (4) is provided with side core-pulling positioning and guiding key (17).
7, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1, the positioning seat (2) that it is characterized in that loosing core on described is provided with the positioning and guiding key (18) of loosing core.
8, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that described left and right sides mould positioning and guiding seat (5) is provided with left and right sides mould guide-localization key (6).
9, fastening-embedding type metal gravity casting die for large-sized gear box body according to claim 1 is characterized in that loosing core (3) on described, looses core down, left mould (14), right mould (15), side take out in core (16) and the die shoe (8) and be respectively equipped with electric heating tube, temperature sensor and equipment for cooling die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100277600A CN101574727B (en) | 2009-05-20 | 2009-05-20 | Fastening-embedding type metal gravity casting die for large-sized gear box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100277600A CN101574727B (en) | 2009-05-20 | 2009-05-20 | Fastening-embedding type metal gravity casting die for large-sized gear box body |
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| Publication Number | Publication Date |
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| CN101574727A true CN101574727A (en) | 2009-11-11 |
| CN101574727B CN101574727B (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100277600A Expired - Fee Related CN101574727B (en) | 2009-05-20 | 2009-05-20 | Fastening-embedding type metal gravity casting die for large-sized gear box body |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039373A (en) * | 2011-01-27 | 2011-05-04 | 重庆理工大学 | Metal casting mould |
| CN102728791A (en) * | 2012-07-11 | 2012-10-17 | 何丙军 | Gravity machine casting mould, equipment and casting method of aluminum alloy wheel |
| CN105081280A (en) * | 2015-08-25 | 2015-11-25 | 来安县科来兴实业有限责任公司 | Metal mold low-pressure casting mold for lower box body of high-speed train cast aluminum gearbox |
| CN105127400A (en) * | 2015-09-11 | 2015-12-09 | 常州理工科技股份有限公司 | Gear case die for locomotive driving device |
| CN105312507A (en) * | 2015-11-14 | 2016-02-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for connecting and fixing sand cores |
| CN108655345A (en) * | 2018-05-30 | 2018-10-16 | 江苏展众汽车部件制造有限公司 | A kind of good positioning effect and the casting mould with refrigerating function |
| CN113680976A (en) * | 2021-07-19 | 2021-11-23 | 东风精密铸造有限公司 | Die structure and forming method for forming metal type Venturi tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4628986A (en) * | 1985-03-26 | 1986-12-16 | Combustion Engineering, Inc. | Molding register system |
| CN2858120Y (en) * | 2005-02-03 | 2007-01-17 | 湖北汽车工业学院 | Multi-direction side loose core die |
| CN1327993C (en) * | 2005-08-02 | 2007-07-25 | 陆如辉 | Press casting mould of magnesium alloy gear box |
| CN201446214U (en) * | 2009-05-20 | 2010-05-05 | 江苏江旭铸造集团有限公司 | Large-sized gearbox body clamp type metal gravity cast die |
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2009
- 2009-05-20 CN CN2009100277600A patent/CN101574727B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039373A (en) * | 2011-01-27 | 2011-05-04 | 重庆理工大学 | Metal casting mould |
| CN102039373B (en) * | 2011-01-27 | 2013-02-27 | 重庆理工大学 | Metal casting mould |
| CN102728791A (en) * | 2012-07-11 | 2012-10-17 | 何丙军 | Gravity machine casting mould, equipment and casting method of aluminum alloy wheel |
| CN102728791B (en) * | 2012-07-11 | 2016-01-13 | 何丙军 | A kind of aluminum alloy wheel gravity casting die |
| CN105081280A (en) * | 2015-08-25 | 2015-11-25 | 来安县科来兴实业有限责任公司 | Metal mold low-pressure casting mold for lower box body of high-speed train cast aluminum gearbox |
| CN105127400A (en) * | 2015-09-11 | 2015-12-09 | 常州理工科技股份有限公司 | Gear case die for locomotive driving device |
| CN105312507A (en) * | 2015-11-14 | 2016-02-10 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for connecting and fixing sand cores |
| CN108655345A (en) * | 2018-05-30 | 2018-10-16 | 江苏展众汽车部件制造有限公司 | A kind of good positioning effect and the casting mould with refrigerating function |
| CN108655345B (en) * | 2018-05-30 | 2019-08-06 | 江苏展众汽车部件制造有限公司 | A kind of good positioning effect and the casting mould with refrigerating function |
| CN113680976A (en) * | 2021-07-19 | 2021-11-23 | 东风精密铸造有限公司 | Die structure and forming method for forming metal type Venturi tube |
| CN113680976B (en) * | 2021-07-19 | 2024-02-20 | 东风精密铸造有限公司 | Die structure and molding method for molding metal type venturi tube |
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| Publication number | Publication date |
|---|---|
| CN101574727B (en) | 2011-06-08 |
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Granted publication date: 20110608 Termination date: 20160520 |