CN108145089B - T-type lathe bed based on increasing material manufacturing divides core method - Google Patents
T-type lathe bed based on increasing material manufacturing divides core method Download PDFInfo
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- CN108145089B CN108145089B CN201810077136.0A CN201810077136A CN108145089B CN 108145089 B CN108145089 B CN 108145089B CN 201810077136 A CN201810077136 A CN 201810077136A CN 108145089 B CN108145089 B CN 108145089B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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Abstract
T-type lathe bed based on increasing material manufacturing divides core method, divide core face by using the level of big plane form and vertically divides core face that T-type lathe bed sand core is cut to the high guide rail sand core for lower part, the low guide rail sand core of several of running channel sand core and top, the high guide rail sand core and running channel sand core of the lower part are used to be formed the pedestal sand mold of lower part, the mating surface of several low guide rail sand cores on top is planar structure, it is complicated to avoid each sand core structure in the prior art, the problem of group core difficulty, the location structure for positioning low guide rail sand core is equipped on lower base sand mold simultaneously, so that the difficulty of T-type lathe bed type core assembly reduces.Simultaneously the quantity of sand core is greatly lowered, greatly improves the production efficiency of T-type lathe bed.
Description
Technical field
The present invention relates to a kind of casting technique, in particular to type core integral type divides core method.
Background technique
T-shape lathe bed is horizontal Machining centers main parts size, is one of structure most Complex Parts in machine tool product, length
Three degree, width, height directions are all in multilayer inner cavity.Given this multi-level inner-cavity structure, needs when wooden model coremaking, moulding point
Few 33 sand cores are switched to, so that group core and core pattern assembly difficulty is big, precision is difficult to control, specifically: 1) sand core fit clearance mistake
Greatly, molten iron is disorderly gone here and there when filling type, causes the more fash of casting, so that cleaning difficulty is big；2) elongate tubular discharge launder sand core uses both ends branch
Support, becomes suspension beam type structure, discharge launder sand core is caused to be easily broken off, and mould assembling needs to be fixed in lower sand mold with iron wire, operation
, often there is core floatation since gap is improper in difficulty, and in casting process, causes casting to choke stomata even transdermally, causes casting matter
Amount is very difficult to control；3) it is easy to happen fire of choking by molten metal buoyancy without location structure between the sand core of inner cavity, and
Location dimension is difficult to control between sand core, causes casting dimension deviation exceeded.
Summary of the invention
The present invention overcomes T-type lathe beds in the prior art to divide core quantity is more, organizes the spacing of core difficulty greatly, between sand core to be difficult to control
The defect of system provides a kind of T-type lathe bed based on increasing material manufacturing and divides core method under the premise of being based on 3D printing technique, and
Technical solution of the present invention is built upon completed T-type lathe bed three-dimensional modeling on the basis of.
T-type lathe bed based on increasing material manufacturing divides core method, divides core face using a level and several vertically divides core face by T-type
The sand core of lathe bed is divided into a lower part sand core and several top sand cores, specifically divides core method are as follows:
The first step, arrangement of pouring system and runner system form T-type lathe bed on the T-type lathe bed threedimensional model that modeling is completed
Sand core, and be in high guide rail sand core in vertical direction below low guide rail sand core；Popular saying is exactly that high guide rail sand core exists
Below low guide rail.
Second step, the joining place for dividing core face that high guide rail sand core and low guide rail sand core are set the level, thus by T-type
The sand core segmentation of lathe bed is independent lower part sand core and top sand core, and lower part sand core includes high guide rail sand core and running channel sand core, on
Portion's sand core namely low guide rail sand core, wherein the structure of excretion slot part is also disposed at low rail sections.
Third step uses and core face is vertically divided by low guide rail sand core cutting to be plane in vertical direction group for eight pieces of mating surfaces
It is low guide rail that the sand core of core and one piece of sand core for organizing core in the horizontal direction with discharge launder, which are also by the low guide rail sand core cutting,
Sand core one, low guide rail sand core three, low guide rail sand core four, low guide rail sand core five, low guide rail sand core six, low is led at low guide rail sand core two
Rail sand core seven, low guide rail sand core eight and the sand core with discharge launder.
T-type lathe bed based on increasing material manufacturing divides core method, for the casting for carrying out casting using the method, used casting
Technique is:
The lower part sand core being made of high guide rail sand core and running channel sand core is placed on build platform by the first step, and described
Ingate porcelain tube is set on the sand core of lower part, and sandbox is buckled on the sand core of lower part, and need to guarantee between lower part sand core and sandbox
Minimum mold thickness complies with standard；
Second step, sandbox is overturn 180 degree after molding sand reaches hardening standard by quicksand, vibration ramming in Xiang Suoshu sandbox
Keep the structure of lower part sand core face-up, to form the pedestal sand mold as mo(u)ld bottom half；
The location structure of low guide rail sand core is arranged in third step on the structural plane of the pedestal sand mold, and in pedestal sand mold
Filter screen is arranged in the inlet of the ingate of structural plane；
4th step, by low guide rail sand core according to the location structure group core being arranged on pedestal sand mold, being specifically exactly will be low
Guide rail sand core cutting is low guide rail sand core one, low guide rail sand core two, low guide rail sand core three, low guide rail sand core four, low guide rail sand core
Five, low guide rail sand core six, low guide rail sand core seven, low guide rail sand core eight and the sand core with discharge launder are according to positional relationship and pedestal sand
Type carry out type core assembly；
5th step, in low guide rail sand core periphery, setting is for enclosing solid mid-part so that the height of mid-part with it is low
The highest face of guide rail sand core flushes, and configures runner system and sprue, the backward mid-part in quicksand consolidation, can wait
It is to be cast.
It is further limited as of the invention, the section of sprue, cross gate and ingate that the running gate system uses
Product is than being 1:1.5-2:2-4, and sprue is arranged on small end head direction, cross gate is arranged in the middle part of two low guide rails, and leads to
Bottom is returned to low guide rail influent stream after passageway oblique cut grafting filter screen, and high guide rail is by returning influent stream by porcelain tube bottom after filter net seat.
It is further limited as of the invention, the runner system uses oil bottle riser, to realize liquid feeding and row
The effect of type intracavity gas out.
It is further limited as of the invention, it is the low guide rail sand core one, low guide rail sand core two, low guide rail sand core three, low
Guide rail sand core four, low guide rail sand core five and low guide rail sand core six are by vertically dividing the cutting in a manner of penetrating through of core face to be six with plane
The sand core of cooperation.
It is further limited as of the invention, the low guide rail sand core seven, low guide rail sand core eight and the sand core with discharge launder
It is laid out with up-down structure, the low guide rail sand core seven and low guide rail sand core eight are located above the sand core with discharge launder, described
The cutting face of low guide rail sand core seven and low guide rail sand core eight and the sand core with discharge launder is on the basis of discharge launder, so that the excretion
Slot structure is completely on the underlying sand core with discharge launder, and the low guide rail sand core seven and low guide rail sand core eight exist
Located side by side on length direction.
It is further limited as of the invention, the high guide rail sand core and running channel sand core of the lower part sand core can be and be linked as one
The structure of body is also possible to two discrete sand cores.
It is further limited as of the invention, described be arranged on pedestal sand mold is used to fixing and limiting top sand core
Location structure can be case cone.
T-type lathe bed of the present invention based on increasing material manufacturing divide core method by by traditional sand core structure be considered as one it is whole
Body according to product structure and is conducive to the factors such as sand removal, carries out a point core to T-type lathe bed, divide core so as to avoid according to modular construction
Caused by sand core quantity is more, mating surface type core assembly caused by structure is complicated is difficult problem, and provide a kind of new design
Thinking improves design efficiency and production efficiency, reduces product cost；Product yield is improved, the useless of product is reduced
Product rate.
The present invention not only solves discharge launder in such a way that the excretion slot structure in T-type lathe bed is individually set up sand core
Because the risk being easily broken off caused by cantilever design, while also avoiding that fiery problem of choking here occurs.
The present invention divides the vertical of core face and low rail sections vertical-horizontal direction by the level at high and low guide rail sand core
Entire T-type lathe bed sand core is divided into the lower part sand core containing high guide rail sand core and running channel sand core for point core face and nine discrete
Low guide rail sand core composition top sand core.
The present invention not only reduces the quantity of sand core by way of big plane will be used to divide core face, while avoiding more
Cumulative errors caused by secondary group of core ensure that the size of casting closes mark, and because group type is close, and sand mold quantity is from more than 30
10 (nine parts of top sand core and lower part sand cores) are reduced to, the place there may be fash are greatly reduced, to drop
Fash on low product surface, thereby reduces the workload of subsequent cleaning, so that the production efficiency of T-type lathe bed substantially mentions
It rises.
Detailed description of the invention
Fig. 1 divides core schematic diagram for the production of T-type lathe bed tradition wooden model.
Fig. 2 pours for T-type lathe bed of the present invention emits cooperation schematic diagram.
Fig. 3 is the sand mould structure schematic diagram with excretion slot structure.
Fig. 4 is that T-type lathe bed of the present invention divides core schematic diagram.
Fig. 5 is T-type lathe bed type core assembling schematic diagram of the present invention.
In figure, 1-T type lathe bed；2- running gate system；2A- sprue；2B- cross gate；3- runner system；4- discharge launder sand
Core；Sand mold under 5-；The inner cavity 6- sand core；8- combined type discharge launder sand core；Sand core of the 9- with discharge launder；The low guide rail sand core one of 10A-；
The low guide rail sand core two of 10B-；The low guide rail sand core three of 10C-；The low guide rail sand core four of 10D-；The low guide rail sand core five of 10E-；10F- is low to be led
Rail sand core six；11- sand core lifting lug；The low guide rail sand core seven of 12A-；The low guide rail sand core eight of 12B-；13- high guide rail sand core；14- running channel
Sand core；15- ingate porcelain tube；16- sandbox；17- pedestal sand mold；18- location structure；19- filter screen；20- level divides core face；
21- vertically divides core face.
Specific embodiment
In order to illustrate more clearly of technical solution of the present invention, will be described in detail according to figure embodiment, it is aobvious and easy
Insight, drawings in the following description are some embodiments of the invention, for those of ordinary skill in the art, is not paying
Under the premise of creative work, it is also possible to obtain other drawings based on these drawings.
The length for the T-type lathe bed 1 that the present embodiment is related to is greater than 3m and the volume at both ends is unequal, according to volume size point
For big end and small end head, the T-type lathe bed 1 is provided with high guide rail and low guide rail, so that T-type lathe bed level in the height direction
It is complicated.In the prior art according to the structure of T-type lathe bed 1, the excretion slot structure in T-type lathe bed sand core is individually set up and is independent
Discharge launder sand core 4 and lower sand mold 5 and inner cavity sand core 6 for group core, three organize the T-type lathe bed 1 that completion can be formed after core
Cavity structure, as shown in Figure 1, its type core assembly difficulty.
Technical solution according to the invention, this T-type lathe bed 1 specifically divide core are as follows:
The first step carries out the three-dimensional modeling of the present embodiment T-type lathe bed in modeling software；
Running gate system 2 and runner system 3 is arranged in second step on T-type lathe bed threedimensional model, forms T according to technological standards
Type lathe bed sand core model, as shown in Fig. 2, the section of the sprue of the specific use of running gate system 2, cross gate and ingate
Product is than being 1:1.5-2:2-4, and sprue is arranged on small end head direction, cross gate is arranged in the middle part of two low guide rails, and leads to
Bottom is returned to low guide rail influent stream after passageway oblique cut grafting filter screen, and high guide rail is by returning influent stream by porcelain tube bottom after filter net seat；Institute
It states runner system 3 and uses oil bottle riser；
Third step uses level to divide core face 20 by T-type lathe bed sand core cutting for the height of low the guide rail sand mold and lower part on top
Guide rail sand core 13, running channel sand core 14, as shown in Figure 4；
4th step, using vertically dividing 21 cutting top of core face low guide rail sand core, from the small end head of T-type lathe bed 1 to big end
It is the low guide rail of rectangle that low guide rail sand core cutting is the longitudinal section that mating surface is planar structure by the syncopation of direction use perforation
One 10A of sand core, low two 10B of guide rail sand core, low three 10C of guide rail sand core, low four 10D of guide rail sand core, low five 10E of guide rail sand core and low
Six 10F of guide rail sand core stops the cutting of perforation method when close to excretion groove location, and discharge launder is integrally done to the whole horizontal direction that arrives
On sand core 9 with discharge launder, the low guide rail sand core of 9 upper section of sand core with discharge launder is split as low guide rail sand core seven
12A and low eight 12B of guide rail sand core, low seven 12A of guide rail sand core and low eight 12B of guide rail sand core are located and the sand core with discharge launder
On 9 structural plane.
Both ends are positioned by combined type discharge launder sand core 8 on sand core 9 with discharge launder, the discharge launder sand core that middle part is hanging
The whole sand core 9 described with discharge launder is done in elongated being arranged in, as shown in Figure 3.
The casting technique of the T-type lathe bed 1 are as follows:
The lower part sand core being made of high guide rail sand core 13 and running channel sand core 14 is placed in moulding vibration ramming platform by the first step
On, and configuration ingate porcelain tube 15 is required according to technique；
Sandbox 16 is buckled on the sand core of lower part by second step, and makes between lower part sand core and sandbox that there are meet design standard
Minimum mold thickness；
Third step, quicksand in Xiang Suoshu sandbox 16, and continuous vibration ramming reaches regulation to molding sand until back-up sand is finished
Hardness after, by sandbox 16 overturn 180 degree so that the structure of lower part sand core is face-up, to form the pedestal sand as mo(u)ld bottom half
Type 17；
4th step requires setting case to bore as low guide rail sand core and determines on 17 structural plane of pedestal sand mold according to technique
Bit architecture 18, and filter screen 19 is set on ingate entrance；
The pedestal sand mold 17 is placed on teeming stage by the 5th step, using handling apparatus by being arranged in low guide rail sand
Low guide rail sand core is sling and according in 18 groups of type to pedestal sand mold 17 of the location structure of setting by sand core lifting lug 11 on core, specifically
Ground is to first pass through sand core lifting lug 11 for low one 10A handling of guide rail sand core to 17 top of pedestal sand mold and according to the positioning case of setting
Cone 18 is placed on pedestal sand mold 17, later successively by low two 10B of guide rail sand core, low three 10C of guide rail sand core, low guide rail sand core four
In six 10F group type to pedestal sand mold 17 of 10D, low five 10E of guide rail sand core and low guide rail sand core, later by the sand core 9 with discharge launder
In group type to pedestal sand mold 17, then by low seven 12A of guide rail sand core and eight 12B group core of low guide rail sand core to the sand core 9 with discharge launder
On, to complete the type core assembly of T-type lathe bed；
6th step, in low guide rail sand core periphery, setting is for enclosing solid mid-part so that the height of mid-part with it is low
The highest face of guide rail sand core flushes, and the riser to suit the requirements is placed into the runner system 3 reserved in low guide rail sand core, and is matched
Set sprue 2A, the backward mid-part in quicksand consolidation；
7th step can be poured after molten metal melting detection is qualified.
It is 10mm- according to the standard compliant minimum mold thickness of T-type lathe bed core design described in this embodiment
200mm。
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and wants according to right of the present invention
Made equivalent variations is sought, is still belonged to the scope covered by the invention.
Claims (8)
1. a kind of T-type lathe bed based on increasing material manufacturing divides core method, which is characterized in that using a level divide core face and it is several hang down
Directly divide core face that the sand core of T-type lathe bed is divided into a lower part sand core and several top sand cores,
Described point of core method are as follows:
The first step, arrangement of pouring system and runner system form the sand of T-type lathe bed on the T-type lathe bed threedimensional model that modeling is completed
Core, and it is in high guide rail sand core in vertical direction below low guide rail sand core；
Second step, the joining place for dividing core face that high guide rail sand core and low guide rail sand core are set the level, thus by T-type lathe bed
Sand core segmentation be independent lower part sand core and top sand core, lower part sand core includes high guide rail sand core and running channel sand core, top sand
Core includes low guide rail sand core；
Third step uses and core face is vertically divided by low guide rail sand core cutting to be plane in vertical direction group core for eight pieces of mating surfaces
Sand core and one piece of sand core for organizing core in the horizontal direction with discharge launder；
The casting technique of described point of core method are as follows:
The lower part sand core being made of high guide rail sand core and running channel sand core is placed on build platform by the first step, and in the lower part
Ingate porcelain tube is set on sand core, and sandbox is buckled on the sand core of lower part, and need to guarantee the minimum between lower part sand core and sandbox
Mold thickness complies with standard；
Second step, quicksand, vibration ramming in Xiang Suoshu sandbox, after molding sand reaches hardening standard, under sandbox overturning 180 degree is made
The structure of portion's sand core is face-up, to form the pedestal sand mold as mo(u)ld bottom half；
The location structure of low guide rail sand core is arranged in third step on the structural plane of the pedestal sand mold, and in pedestal sand mould structure
Filter screen is arranged in the ingate inlet in face；
4th step is specifically exactly by low guide rail by low guide rail sand core according to the location structure group core being arranged on pedestal sand mold
Sand core one, low guide rail sand core three, low guide rail sand core four, low guide rail sand core five, low guide rail sand core six, low is led at low guide rail sand core two
Rail sand core seven, low guide rail sand core eight and the sand core with discharge launder are according to positional relationship and pedestal sand mold carry out type core assembly；
5th step, in low guide rail sand core periphery, setting is for enclosing solid mid-part, so that the height of mid-part and low guide rail
The highest face of sand core flushes, and configures runner system and sprue, the backward mid-part in quicksand consolidation, that is, may wait for pouring
Note.
2. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the casting system
The sectional area ratio of sprue, cross gate and ingate that system uses is 1:1.5-2:2-4, and sprue is arranged in small end head direction
Upper, cross gate setting is returned in the middle part of two low guide rails, and through bottom after passageway oblique cut grafting filter screen to low guide rail influent stream, high guide rail
By returning influent stream by porcelain tube bottom after filter net seat.
3. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the riser system
System uses oil bottle riser.
4. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the low guide rail
Sand core one, low guide rail sand core two, low guide rail sand core three, low guide rail sand core four, low guide rail sand core five and low guide rail sand core six are by hanging down
Directly dividing the cutting in a manner of penetrating through of core face is six sand cores cooperated with plane.
5. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the low guide rail
Sand core seven, low guide rail sand core eight and the sand core with discharge launder are laid out with up-down structure, the low guide rail sand core seven and low guide rail sand
Core eight is located at the sand core top with discharge launder, the low guide rail sand core seven and low guide rail sand core eight and the sand core with discharge launder
Cutting face on the basis of discharge launder so that the excretion slot structure is completely in the underlying sand core with discharge launder
On, the low guide rail sand core seven and low guide rail sand core eight located side by side in the longitudinal direction.
6. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the lower part sand
The high guide rail sand core and running channel sand core of core can be the structure being linked together, and be also possible to two discrete sand cores.
7. the T-type lathe bed according to claim 1 based on increasing material manufacturing divides core method, which is characterized in that the positioning knot
Structure can be case cone.
8. the T-type lathe bed according to claim 5 based on increasing material manufacturing divides core method, which is characterized in that the discharge launder
Structure is integrally provided on the sand core with discharge launder, and is connected with the sand core entity with discharge launder.
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| JPH0755354B2 (en) * | 1986-10-15 | 1995-06-14 | マツダ株式会社 | Method for detecting misalignment of core setter |
| JP4052718B2 (en) * | 1998-03-19 | 2008-02-27 | 株式会社大阪シェル | Hollow core manufacturing method and manufacturing apparatus |
| CN102371342B (en) * | 2010-08-17 | 2013-07-24 | 广西玉柴机器股份有限公司 | Casting sand core unit, exterior appearance and casting method of diesel engine body |
| KR20140105215A (en) * | 2013-02-22 | 2014-09-01 | 박원철 | Assembly Core for Casting Mold of EGR Valve Housing and Casting Mold using the Same. |
| CN105665643B (en) * | 2016-04-08 | 2017-12-19 | 宁夏共享模具有限公司 | A kind of manufacture method of the oblique bed casting of 3D printing |
| CN205599880U (en) * | 2016-04-22 | 2016-09-28 | 南通华东油压科技有限公司 | Large -duty loader hydraulic valve foundry goods mould |
| CN106475518B (en) * | 2016-09-29 | 2019-02-01 | 共享智能装备有限公司 | For casting the sand mold and its manufacturing method of rotary structure casting |
| CN107127304B (en) * | 2017-05-17 | 2019-11-29 | 共享智能装备有限公司 | A kind of automobile engine cylinder-body 3D printing production method |
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Effective date of registration: 20200206 Address after: 241200 Anhui city of Wuhu province Fanchang County Economic Development Zone Patentee after: Sharing intelligent Foundry Industry Innovation Center (Anhui) Co., Ltd Address before: 750021 the Ningxia Hui Autonomous Region Yinchuan Xixia district the Yellow River road 330 economic and Technological Development Zone, small and medium enterprises entrepreneurial base science and technology building, office building Patentee before: Sharing intelligence Foundry Industry Innovation Center Co., Ltd. |