CN107309661A - Lathe and preparation method thereof - Google Patents

Lathe and preparation method thereof Download PDF

Info

Publication number
CN107309661A
CN107309661A CN201611199188.2A CN201611199188A CN107309661A CN 107309661 A CN107309661 A CN 107309661A CN 201611199188 A CN201611199188 A CN 201611199188A CN 107309661 A CN107309661 A CN 107309661A
Authority
CN
China
Prior art keywords
mould
lathe
sand mold
chamber
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611199188.2A
Other languages
Chinese (zh)
Inventor
李华文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Pinchuan Pml Precision Mechanism Ltd
Original Assignee
Zhejiang Pinchuan Pml Precision Mechanism Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Pinchuan Pml Precision Mechanism Ltd filed Critical Zhejiang Pinchuan Pml Precision Mechanism Ltd
Priority to CN201611199188.2A priority Critical patent/CN107309661A/en
Publication of CN107309661A publication Critical patent/CN107309661A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01Frames, beds, pillars or like members; Arrangement of ways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01Frames, beds, pillars or like members; Arrangement of ways
    • B23Q1/015Frames, beds, pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01Frames, beds, pillars or like members; Arrangement of ways
    • B23Q1/017Arrangements of ways

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The invention discloses a kind of lathe and its processing method, its drip irrigation device is a kind of lathe, including lathe bed, slideway and base, and the lathe bed is integrally formed with slideway, the base is integrally formed with lathe bed, and the lathe bed, slideway and base are located at same reference plane.A kind of lathe precision of the present invention is high, and stability is good, and machining period is few, production cost reduction.

Description

Lathe and preparation method thereof
Technical field
Field is manufactured the present invention relates to precision machine tool, more specifically, it relates to a kind of lathe and preparation method thereof.
Background technology
Lathe of the prior art has generally included three parts, and a part is used for supporting role as lathe bed, and a part is made It is used for the transmission of workpiece for slideway, another part is as base, for assembling cutter instrument, when manufacturing the lathe, leads to Often casting can be distinguished in this three part, then be bolted connection when mounted, so that assembled is in whole lathe, but That can so cause a defect, exactly because lathe be to belong to precision instrument, it is necessary to keep its higher precision, and by this It is difficult to keep its horizontal precision that three parts are bolted after casting respectively, in the presence of public when slideway be connected with lathe bed Difference, can also have tolerance when base is connected with lathe bed, the tolerance that so may result between slideway and base is bigger, its level essence Accuracy and tolerance each other can not be effectively guaranteed.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of lathe, by the way that three parts are set Integral shaping, so as to avoid the presence of tolerance, precision is high.
To achieve the above object, the invention provides following technical scheme:A kind of lathe, including lathe bed, slideway and bottom Seat, the lathe bed is integrally formed with slideway, and the base is integrally formed with lathe bed, and the lathe bed, slideway and base are located at same One reference plane.
By using above-mentioned technical proposal, base, slideway and lathe bed are combined as a whole from casting, are easy to processing once Shaping, it is not necessary to parts processing, reduces the machining period of lathe, reduces cutter loss, reduces the processing cost of every lathe bed, and And it is suitable for the stress release of gradually mother metal, increase the absorbing power of lathe, reduce built-up time, reduce the adaptation of interval piece, improve The run stability of lathe, it is ensured that the machining accuracy of lathe.
Further, the lathe bed bottom is additionally provided with some positioning screw caps for being used to adjust level reference, described fixed Position nut takes shape in one with lathe bed.
By using above-mentioned technical proposal, positioning screw cap is integrally formed in lathe bed bottom accurate for the level for adjusting lathe Degree, positioning screw cap is integrally formed stability height with lathe bed, and error is small, is easy to regulation.
The processing method for producing the lathe is also provided by the present invention, it includes:First, moulding:By each of lathe Sand mold mould is made by resin sand coagulation forming in feature;
2nd, sand mold is repaired;
3rd, with mould:Some independent sand mold moulds of configuration are all arranged to inside sand mold mould;
4th, mould assembling, casting prepare;
5th, melting:The pig iron, steel scrap, foundry returns and filler is taken to be put into intermediate frequency heating into molten iron;
6th, cast:Molten iron is poured into sand mold mould and is cooled and shaped;
7th, unpacking, casting material removing surface:Open mould and take out casting material, and will be attached to the resin sand and impurity on casting material surface It is purged;
8th, ball blast, stress release;
9th, sand mold is reclaimed, regenerated;
Tenth, annealing, stress release;
11, casting material polishing, cleaning;
12, essence is thrown, outward appearance is cleared up;
13, application, antirust treatment.
By using above-mentioned technical proposal, the lathe produced after the processing technology by above-mentioned 13 step can be by bed Body, base and slideway are molded as one, and internal organizational structure is stable, and vibration resistance is good, and structural strength is high, and surface is smooth Finishing, high yield rate.
Further, in step one, sand mould will be set in for the mould placement for being molded slideway and base portion Has bottom.
By using above-mentioned technical proposal, the bottom of sand mold mould will be arranged on for being molded the mould of slideway and base portion Portion, is so the internal material because density is higher when molten steel solidification is molded positioned at the part of mold bottom in casting cycle Enrich, its internal structure and wear-resisting anti-seismic performance are higher, reference surface precision is high.
Further, contradicted in step 3 when with mould, between adjacent mould and I-shaped part is installed for keeping phase Stability between mutually.
By using above-mentioned technical proposal, I-shaped part is set to be used for fixing mould between adjacent mould when with mould, So that will not be deformed upon when molten iron is cast, it is ensured that the basic size of lathe.
Further, the I-shaped part is provided with annular protrusion.
By using above-mentioned technical proposal, because I-shaped part needs to be supported between two sand mold moulds, therefore set Into I-shaped, it is set directly to be molded in lathe, while by setting annular protrusion to be to be used to increase its shaping in the middle Stationarity in lathe, it is to avoid cause I-shaped part to be separated with lathe because of vibration during the later stage is using lathe.
Further, the I-shaped part is made up of iron or aluminum.
By using above-mentioned technical proposal, I-shaped part is arranged to be made up of iron or aluminum, the energy when being fabricated from iron Enough it is effectively ensured together with molten steel solidification shaping, it is ensured that the integrally-built uniformity of lathe, can also be made up of aluminum material, I-shaped part can so be melted when molten iron is cast, so that the stability in casting cycle can not only be ensured, additionally it is possible to The step of being subsequently processed to the I-shaped part is saved, production cost is saved.
Further, in step 4, tundish is installed in the casting port position of mould, the tundish set in cuboid and Be formed with chamber one and chamber two, its bottom of middle chamber one opens up through hole and is connected with casting gate, the chamber one and chamber two it Between there is step, the floor height of chamber one is higher than the floor height of chamber two.
By using above-mentioned technical proposal, tundish is set to be used to store liquid molten iron in the casting gate of mould, tundish is set Into cuboid coelosis room one and chamber two, and the bottom surface of chamber one forms step higher than the bottom surface of chamber two, so when pouring Can be introduced into chamber two when molten iron is poured into tundish during casting, then overflowed at the step of chamber two chamber one hence into In mould, this avoid molten iron directly is poured into mould because directly pour into can cause molten iron by air press-in die not Easily exhaust, and molten iron is overflowed into after chamber one from chamber two and flowed into from through hole in mould, can be discharged air in time, and chamber Molten iron in room one and chamber two can be supplemented the molten iron in mould in cooling, convenient shaping.
Further, it is provided with screen pack in the tundish.
By using above-mentioned technical proposal, screen pack, which is arranged in tundish, to be used to carry out filtration to molten iron, and The removal of impurity is conveniently dismantled and gone, the flow velocity of molten iron can be adjusted in time in casting cycle and avoid casting gate from being blocked.
Further, in step one, positioning screw cap is fixedly mounted on sand mold mould and protrudes from the portion of sand mold mould Set up separately and be equipped with annular groove.
Increasing annular groove by using above-mentioned technical proposal, then when positioning screw cap is molded on sand mold mould is used to supply Molten iron coats to form fixation, this makes it possible to the stability for improving positioning screw cap, will not be positioned during later stage use Nut rocks or existed the situation in gap.
Present invention tool has the advantage that compared with prior art:It is the manufacture of base, slideway and lathe bed is integral, it is possible to keep away The problem of exempting to influence the machining accuracy and stability of lathe because increasing lathe cumulative limit, so that the operating for improving lathe is steady It is qualitative, it is ensured that the machining accuracy of lathe, while the machining period of lathe can also be reduced, the processing cost of every lathe bed is reduced, And it is suitable for the stress release of casting mother metal, increases the absorbing power of lathe, while the lathe produced by the processing method is steady Qualitative good, internal organizational structure is stable, and reference surface precision is high.
Brief description of the drawings
Fig. 1 is the structural representation of lathe.
In figure:1st, lathe bed;2nd, base;3rd, slideway;4th, positioning screw cap.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art Member can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as at this All protected in the right of invention by Patent Law.
Embodiment one:Lathe, as shown in figure 1, including lathe bed, integrally formed with base and slideway on lathe bed, while The bottom of lathe bed is also integrally formed with positioning screw cap, and the internal organizational structure of whole lathe is all formed as one, and base and Slideway is located at same reference plane, is not in the situation of cumulative limit so as to ensure that the precision between base and slideway, so that So that the precision of lathe is improved, and can adjust the horizontal accuracy of lathe by positioning screw cap, when being easy to post-production workpiece Precision, so as to improve the overall quality of lathe.
Embodiment two:A kind of processing method for processing the lathe, including one, moulding:Each feature of lathe is equal Sand mold mould is made by resin sand coagulation forming, wherein lathe profile is formed by the sand mold feature in mould inframe portion, and machine The feature sand mold mould that has several independent of bed core is made, while will be used to being molded slideway and base this two parts Sand mold mould be placed in the lowermost end of mould frame, so when casting in the later stage, molten iron can preferentially enter this two parts, and And can be extruded by molten iron above, so that the molten iron of the part is born, weight is larger, and density is larger, the quality of formation Preferably, reference precision is ensure that, simultaneously as need by bolt cast molding in lathe, then now directly will positioning It is bolted in sand mold mould, the bolt on the outside of sand mold mould is used to fuse coagulation forming with molten iron, now exists The part open up annular groove be used for for molten iron enter, so for the later stage cast when molten steel solidification can be made recessed in the annular Groove portion so that lathe be connected with bolt it is more firm;
2nd, sand mold is repaired:By colliding with of occurring in sand mold forming process or incomplete place is mended by way of stop-off Charge whole, and be used in the agent of sand mold mould surface spraying painting type to improve fire resistance and holding surface is smooth;
3rd, with mould:Some independent sand mold moulds of configuration are all arranged to inside sand mold mould, in instrumentation, phase Also need to set I-shaped part to be used to contradict between adjacent sand mold mould for keeping adjacent molds between adjacent sand mold mould Between be relatively fixed, i.e., in order to ensure the size of lathe shaping, and be also surrounded with the side wall of I-shaped part a ring shape Projection, annular protrusion is used for when I-shaped part surrounds type by ladle, preferably can be combined with molten iron, it is to avoid after I-shaped part Phase is fixed on the possibility shaken when in fuselage, and I-shaped part can have iron material to be made, it is possibility to have aluminum is made, when It can effectively ensure that when being fabricated from iron together with molten steel solidification shaping, it is ensured that the integrally-built uniformity of lathe, can also be by Aluminum material is made, and can so melt I-shaped part when molten iron is cast, so as to can not only ensure in casting cycle Stability, additionally it is possible to save the step of being subsequently processed to the I-shaped part, saves production cost;In with mold process also Need to open up side channel on the side wall of the sand mold mould contacted with mould frame, after sand mold mould is placed, in addition it is also necessary to from Side channel is filled consolidation by potting resin sand in side channel, so occurs to contradict active force with mould frame by the resin sand of filling, from And the thrust between adjacent molds is improved, so as to will not be moved during casting molten iron because of heated, so as to protect The dimensional accuracy of lathe shaping is demonstrate,proved.
4th, mould assembling, casting prepare:After sand mold mould is all placed, cover and covered on mould, then pacified on mould on lid Tundish is put, tundish is arranged between 10cm ~ 15cm in rectangular-shape and height, and tundish is divided into chamber one and chamber two, chamber one Bottom opens up through hole and is connected with the sprue channel open of mould, and the floor height of chamber one is higher than the bottom surface of chamber two, when be so can be with The speed of the convenient casting molten iron of adjustment in time, and screen pack is also arranged in tundish, can be in time by filter screen filtration Impurity is removed in time, and easily can be removed screen pack and tundish in time, if screen pack is arranged on into pouring for mould In road, then impurity is not easily removed, while can then influence the fluency of casting when a jam does occur;
5th, melting:The pig iron, steel scrap, foundry returns and filler is taken to be put into intermediate frequency heating into molten iron;
6th, cast:Molten iron is poured into sand mold mould and is cooled and shaped, ensures the fluency of molten iron in casting cycle, keeps away Exempt from situation about stopping, so the institutional framework inside lathe can be caused unstable, molten iron is first punched into when importing molten iron In the chamber two of tundish, now chamber two has the function of a buffering, then overflows and enters after step in chamber one from chamber two It is flowed into the runner of mould, while burnt in casting by lighting a fire in running channel, for its inner air to be discharged into, side Just the inflow of molten iron, while running channel can be given to carry out pre- heat effect, promotes the mobility of molten iron, treats molten iron full of running channel and from emitting Stop casting when mouth is emerged, be then cooled and shaped;
7th, unpacking, casting material removing surface:Open mould and take out casting material, and will be attached to the resin sand and impurity on casting material surface It is purged;
8th, ball blast, stress release:Shot Blasting is carried out by shot-blasting machine;
9th, sand mold is reclaimed, regenerated:Will cast complete after mould frame and sand mold mould crushed back by vibrating sieving machine Receive;
Tenth, annealing, stress release:Made annealing treatment;
11, casting material polishing, cleaning:Casting material is polished, the convex ball and impurity on cleaning casting material surface;
12, essence is thrown, outward appearance is cleared up;Reuse shot-blasting machine and carry out smart throwing, steel ball size used herein is less than in step 8 The steel ball size used;
13, application, antirust treatment, carry out rust prevention by applying liquid material paint on casting material surface, the finished product of lathe have thus been made.

Claims (10)

1. a kind of lathe, including lathe bed, slideway and base, it is characterised in that:The lathe bed is integrally formed with slideway, the bottom Seat is integrally formed with lathe bed, and the lathe bed, slideway and base are located at same reference plane.
2. lathe according to claim 1, it is characterised in that:The lathe bed bottom is additionally provided with some for adjusting level The positioning screw cap of reference plane, the positioning screw cap takes shape in one with lathe bed.
3. a kind of processing method for producing lathe described in claim 1 or 2, it is characterised in that:First, moulding:By lathe Sand mold mould is made by resin sand coagulation forming in each feature;
2nd, sand mold is repaired;
3rd, with mould:Some independent sand mold moulds of configuration are all arranged to inside sand mold mould;
4th, mould assembling, casting prepare;
5th, melting:The pig iron, steel scrap, foundry returns and filler is taken to be put into intermediate frequency heating into molten iron;
6th, cast:Molten iron is poured into sand mold mould and is cooled and shaped;
7th, unpacking, casting material removing surface:Open mould and take out casting material, and will be attached to the resin sand and impurity on casting material surface It is purged;
8th, ball blast, stress release;
9th, sand mold is reclaimed, regenerated;
Tenth, annealing, stress release;
11, casting material polishing, cleaning;
12, essence is thrown, outward appearance is cleared up;
13, application, antirust treatment.
4. preparation method according to claim 3, it is characterised in that:In step one, it will be used to be molded slideway and bottom The mould placement of seating portion is set in sand mold mould bottom.
5. preparation method according to claim 3, it is characterised in that:In step 3 when with mould, adjacent mould it Between contradict be provided with I-shaped part be used for keep stability each other.
6. preparation method according to claim 5, it is characterised in that:The I-shaped part is provided with annular protrusion.
7. preparation method according to claim 6, it is characterised in that:The I-shaped part is made up of iron or aluminum.
8. preparation method according to claim 3, it is characterised in that:In step 4, installed in the casting port position of mould There is tundish, the tundish sets in cuboid and is formed with chamber one and chamber two, and its bottom of middle chamber one opens up through hole with pouring Casting nozzle is connected, and has step between the chamber one and chamber two, and the floor height of chamber one is higher than the floor height of chamber two.
9. preparation method according to claim 8, it is characterised in that:Screen pack is provided with the tundish.
10. preparation method according to claim 3, it is characterised in that:In step one, positioning screw cap is fixedly mounted on sand Pattern has part that is upper and protruding from sand mold mould and is provided with annular groove.
CN201611199188.2A 2016-12-22 2016-12-22 Lathe and preparation method thereof Pending CN107309661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611199188.2A CN107309661A (en) 2016-12-22 2016-12-22 Lathe and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611199188.2A CN107309661A (en) 2016-12-22 2016-12-22 Lathe and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107309661A true CN107309661A (en) 2017-11-03

Family

ID=60185209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611199188.2A Pending CN107309661A (en) 2016-12-22 2016-12-22 Lathe and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107309661A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2758008Y (en) * 2004-12-29 2006-02-15 大连机床集团有限责任公司 Basement for machine tool
JP2006043824A (en) * 2004-08-05 2006-02-16 Okamoto Machine Tool Works Ltd Machine frame of machine tool made of metal and its casting method
CN201493684U (en) * 2009-05-27 2010-06-02 重庆宏钢数控机床有限公司 Machine tool bed
CN102756079A (en) * 2011-04-27 2012-10-31 陆宝庆 Manufacturing process of cross beam of planer type milling machine
CN102756084A (en) * 2011-04-27 2012-10-31 陆宝庆 Manufacturing process of planer type milling machine
CN102837190A (en) * 2012-09-19 2012-12-26 柳州市志宝机械有限公司 Integral lathe body structure of headstock, lathe body, base and front support and rear support of lead screw
CN102886685A (en) * 2012-09-24 2013-01-23 湖北江汉重工有限公司 Novel machine tool bed casting assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006043824A (en) * 2004-08-05 2006-02-16 Okamoto Machine Tool Works Ltd Machine frame of machine tool made of metal and its casting method
CN2758008Y (en) * 2004-12-29 2006-02-15 大连机床集团有限责任公司 Basement for machine tool
CN201493684U (en) * 2009-05-27 2010-06-02 重庆宏钢数控机床有限公司 Machine tool bed
CN102756079A (en) * 2011-04-27 2012-10-31 陆宝庆 Manufacturing process of cross beam of planer type milling machine
CN102756084A (en) * 2011-04-27 2012-10-31 陆宝庆 Manufacturing process of planer type milling machine
CN102837190A (en) * 2012-09-19 2012-12-26 柳州市志宝机械有限公司 Integral lathe body structure of headstock, lathe body, base and front support and rear support of lead screw
CN102886685A (en) * 2012-09-24 2013-01-23 湖北江汉重工有限公司 Novel machine tool bed casting assembly

Similar Documents

Publication Publication Date Title
TWI555595B (en) Method and device for producing a metal component by using a casting-and forming-tool
EP1813366B1 (en) Investment casting mold design and method for investment casting using the same
CN106825407B (en) A kind of sand mold manufacture component and casting method
CN102921902B (en) Composite shaping technique method of iron pattern coated sand and iron type core assembly
US20090160092A1 (en) Precision casting process
WO2005061156A8 (en) Production line and method for the continuous production of cast parts from a molten metal, in particular a molten light alloy
CN204035526U (en) Casting mould
CN101618428A (en) Method for casting hub casts of aerogenerators
CN102211145A (en) Gravity casting process of all-metal mould of coupler aluminum part
WO2015055654A1 (en) Process and casting machine for casting metal parts
CN109047667B (en) Casting process of frame saw bearing block
CN102728805B (en) Precision casting method for casting-channel-free rotational molding of automotive engine flywheel
CN103298573A (en) Rigging system for casting railcar coupler parts
CN101293276B (en) Method for casting brass ware
CN101618429A (en) Method for casting hub casts of aerogenerators
CN106734955A (en) A kind of aluminium alloy steering gear housing casting process
CN103506573B (en) Casting method for complex sand core integrating
CN108393438B (en) Process device and production method for casting bearing cover castings by iron mold sand-lined vertical parting
CN105382201A (en) Brake disc casting technology and brake disc casting mold thereof
CN202984580U (en) Cylinder cover casting die
CN109465403A (en) A kind of casting technique of the small flow casting of immersible pump
KR101726148B1 (en) Molding sand saving apparatus for casting and casting method thereby
CN107309661A (en) Lathe and preparation method thereof
CN106670436A (en) Casting method of aluminum alloy wheel hub
CN109351919B (en) Iron mold with pouring cup and casting method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20171103

RJ01 Rejection of invention patent application after publication