CN202752371U - Forward extrusion mould - Google Patents

Forward extrusion mould Download PDF

Info

Publication number
CN202752371U
CN202752371U CN 201220303771 CN201220303771U CN202752371U CN 202752371 U CN202752371 U CN 202752371U CN 201220303771 CN201220303771 CN 201220303771 CN 201220303771 U CN201220303771 U CN 201220303771U CN 202752371 U CN202752371 U CN 202752371U
Authority
CN
China
Prior art keywords
punch
drift
squeezing
plug
aperture
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.)
Active
Application number
CN 201220303771
Other languages
Chinese (zh)
Inventor
黄荣
龚卫红
朱亚萍
袁永军
季成
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.)
Jiangsu R & D Polytron Technologies Inc
Original Assignee
YANCHENG LIYAN PRECISION FORGING CO 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 YANCHENG LIYAN PRECISION FORGING CO Ltd filed Critical YANCHENG LIYAN PRECISION FORGING CO Ltd
Priority to CN 201220303771 priority Critical patent/CN202752371U/en
Application granted granted Critical
Publication of CN202752371U publication Critical patent/CN202752371U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a forward extrusion mould which is used for conducting of a forward extrusion to a cylindrical blank provided with a transparent inner hole, wherein the cylindrical blank provided with the transparent inner hole is obtained through processes of blanking, upsetting, backward extruding and hole drilling, and accordingly two hollow cylinders and a forging stock of a transition section between the two cylinders are formed, and the two cylinders are provided with different diameters. The forward extrusion mould comprises an upper punch component, lower moulds which form a lower mould cavity, and a material returning device which extends upward from the lower mould cavity. The upper punch component comprises a core rod punch and a punch guide sleeve, wherein the punch guide sleeve is arranged on the periphery of the core rod punch in sleeved mode, the core rod punch extends out of the punch guide sleeve in a predetermined length, and a combined upper punch structure is formed by matching of the core rod punch and the punch guide sleeve. Compared with the prior art, according to the forward extrusion mould, the combined upper punch structure is formed by the matching of the core rod punch and the punch guide sleeve, when the forward extrusion is conducted to the cylindrical blank provided with the transparent inner hole, pressure on the core rod punch is reduced, the core rod is cannot be broken easily, the service life of the upper punch component can be effectively ensured, efficiency is improved, and cost is reduced.

Description

A kind of positive extruding mold
[technical field]
The utility model relates to metal precision forging field, the positive extruding mold that particularly uses in a kind of forging method of cutting pick boot.
[background technology]
Please refer to shown in Figure 1ly, it is a kind of schematic diagram of cutting pick boot forging, and 110 is the large end of tooth boots forging, and 120 is the small end of tooth boots forging.Cutting pick boot is used for mining machine, particularly coal mining mechanically, supports the use with pick, and be coal-winning machine, a large amount of a kind of easily-consumed products that use on the development machine.Cutting pick boot easily damages, and has increased the replacing number of times of part on the equipment, has reduced production efficiency, has also increased cost simultaneously.The tooth boots machining cycle is long, and consumptive material is many, and product strength is low, rapid wear.At present, manufacturing firm all adopts inner chamber precision forging blank technology both at home and abroad, and its efficient is high, cost is low.
The conventional Forging Technology of processing cutting pick boot comprises: blanking, and base, ball blast, coating, heating, jumping-up, punching, ball blast, coating, heating, just crowded, be shaped, anneal and get length.Please refer to shown in Fig. 2 (a)-2 (f) the change of shape procedure chart of the tooth boots product that it obtains for the Forging Technology that adopts above-mentioned cutting pick boot.Wherein, the shape of product that Fig. 2 (a) obtains for blanking procedure, the shape of product that Fig. 2 (b) obtains for the jumping-up operation, the shape of product that Fig. 2 (c) obtains for the punching operation, Fig. 2 (d) is for just squeezing the shape of product that operation obtains, the shape of product that Fig. 2 (e) obtains for forming process, Fig. 2 (f) is for getting the shape of product that farm labourer's order obtains.
Punching operation consumptive material in the above-mentioned technique is many, and the punching die design is complicated, and the hole precision of going out is low, needs the precision in following process guarantee hole.
Please refer to shown in Figure 3ly, it is for just squeezing the positive extruding mold that uses in the operation.This positive extruding mold comprises drift cover 310, drift 320, counterdie 330, stripping attachment 340.Drift 320 is the integral type drift, and its end diameter D1 is much smaller than outside diameter D2, and does not have round-corner transition at position A place.In the forward extrusion process, the large end of drift is subjected to downward active force, and the active force that makes progress that the drift small end is given by blank 350, because A place, position does not have round-corner transition, effect low punch 320 two kinds of power easily produces fracture, therefore need in process of production in time to change drift, reduced production efficiency.Simultaneously, because the guiding accuracy of drift 320 is not high, the Product Precision after the forging is low, affects the carrying out of forming process.
Therefore, be necessary to propose a kind of improved technical scheme and solve the problems referred to above.
[utility model content]
The purpose of this utility model is to provide a kind of positive extruding mold, and it can guarantee Product Precision, reduces simultaneously consumptive material, reduces cost.
In order to address the above problem, the utility model proposes a kind of positive extruding mold, it is used for blanking, pier is thick, anti-squeezing, the cylinder blank with penetrating endoporus that drilling operating obtains carries out forward extrusion, two hollow circular cylinders that have that diameter differs with formation and the forging stock of changeover portion between them, described positive extruding mold comprises the upper punch assembly, form the counterdie of lower mode cavity and from the upwardly extending stripping attachment of lower mode cavity, described upper punch assembly comprises the plug drift and is sheathed on the drift fairlead of plug drift periphery, described plug drift extends described drift fairlead, described plug drift and described drift fairlead fit in a combination upper punch structure, the predetermined length that described plug drift extends described drift fairlead be charge length 2.5-3 doubly.
Further, described plug drift extend the predetermined length of described drift fairlead be charge length 2.5-3 doubly.
Further, the anti-aperture of squeezing of instead squeezing product that operation obtains with the magnitude relationship of just squeezing the aperture of just squeezing the product that operation obtains is: 0<instead squeezes aperture-just squeezing aperture≤0.1mm.
Compared with prior art; the utility model fits in a combination upper punch structure with plug drift and drift fairlead; when the cylinder blank with penetrating endoporus is carried out forward extrusion; reduce the pressure of plug drift; make not frangibility of plug drift; effectively the service life of protection upper punch assembly, raise the efficiency, reduce cost.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.Wherein:
Fig. 1 is a kind of schematic diagram of cutting pick boot forging;
The change of shape procedure chart of the tooth boots product that Fig. 2 (a)-2 (f) obtains for the Forging Technology that adopts existing cutting pick boot;
Fig. 3 is just squeezing the positive extruding mold that uses in the operation;
Fig. 4 is the forging method process chart in one embodiment of the utility model cutting pick boot forging;
Fig. 5 utilizes the positive extruding mold in the utility model just squeezing the product shaping procedure chart of operation; With
Fig. 6 (a)-6 (g) is the utility model shape of product change procedure figure in one embodiment.
[specific embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Alleged " embodiment " or " embodiment " refer to be contained in special characteristic, structure or the characteristic at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
The utility model adopts plug drift and drift fairlead is fitted in a combination upper punch structure; when the cylinder blank with penetrating endoporus is carried out forward extrusion; reduce the pressure of plug drift; make not frangibility of plug drift; effectively protect the service life of upper punch assembly; raise the efficiency, reduce cost.
The utility model adopts anti-squeezing with drilling operating to replace direct punching operation, after blanking, annealing, utilize anti-extruding mold that blank is carried out backward extrusion, hole by machining after anti-the squeezing, guarantee blank endoporus axiality to foreign round, thereby guarantee the Product Precision of tooth boots forging, reduce simultaneously spillage of material, reduce cost.
Please refer to shown in Figure 4ly, it is the forging method process chart in one embodiment of the utility model cutting pick boot forging.Described technological process comprises the steps.
Step 410, blanking.
Described blanking is adjusted cutting length for selecting suitable bar, with Weight control in predefined scope.
Step 420, jumping-up.
Described jumping-up is bar material baiting to be put into mould carry out jumping-up, to obtain cylinder blank.
Step 430, anti-squeezing.
The described anti-die cavity that squeezes as described blank being put into anti-extruding mold carries out backward extrusion has the tubbiness endoporus with formation cylinder blank, owing to being at the die cavity internal shaping, therefore can guarantee blank endoporus axiality to foreign round.Because the anti-metal material that squeezes endoporus forms tubbiness by flowing, therefore low many of the thickness of the direct punching of bucket end Thickness Ratio of described blank have reduced spillage of material.
Step 440, boring.
Described boring is that endoporus direction along described blank is carried out machining boring at the bottom of to bucket, the cylinder blank that has penetrating endoporus with formation, and gradient a (described gradient is the angle of endoporus central shaft and endoporus side) is reserved in the aperture at the cylinder blank with penetrating endoporus, is convenient to the follow-up operation of just squeezing and leads.
Through sunykatuib analysis, in described drilling operating, when the aperture of the cylinder blank with penetrating endoporus reservation gradient a is 3 °, can play the high accuracy guiding to the lower operation of just squeezing together, increase by 1 ° of just crowded middle inner chamber folding, affect size, reduce 1 ° and can not play guide effect again, therefore, in a preferred embodiment, it is 3 ° that gradient a is reserved in the aperture of the cylinder blank with penetrating endoporus that obtains at drilling operating.
Step 450, just crowded.
Described just squeezing pushed for described cylinder blank with penetrating endoporus is put into positive extruding mold, with two hollow circular cylinders forming that diameter differs and the forging stock of the changeover portion between them, wherein the hollow circular cylinder of small diameter consists of the small end of cutting pick boot.
Step 460, shaping.
The described changeover portion that utilizes between two hollow circular cylinders that mould differs to the large footpath hollow circular cylinder in the described forging stock and diameter that is configured as pushes, and forms the large end of cutting pick boot, thereby forms forging.The large end of described cutting pick boot is that the longitudinal section is the trapezoidal of hollow.
Step 470, get length.
The described length of getting makes product reach drawing requirement for to described forging intercepted length.
Wherein, after step 410 blanking, also comprise base, ball blast, coating, heating process before step 420 jumping-up.
After step 440 boring, step 450 also comprises ball blast, coating, heating process before just squeezing.
Step 470 also comprises the temperature control refrigerating work procedure before getting length after step 460 is shaped,
Described temperature control is cooled to and adopts temperature control furnace that forging is cooled off, compares with conventional annealing, and annealing cycle shortening greatly, thus enhance productivity, reduce cost.
In sum, the forging method of cutting pick boot forging of the present utility model is compared its difference with the Forging Technology of existing cutting pick boot forging and is, adopt anti-squeezing with drilling operating to replace direct punching operation, after blanking, annealing, utilize anti-extruding mold that blank is carried out backward extrusion, guarantee forming blank endoporus axiality to foreign round, utilize machining boring after anti-the squeezing, reduce spillage of material, and after boring, leave 3 ° gradient in the aperture, lead when just squeezing operation together down, to play high accuracy, thus the Product Precision of assurance tooth boots forging.
Please refer to shown in Figure 5ly, it is to utilize the positive extruding mold in the utility model just squeezing the product shaping procedure chart of operation.
Positive extruding mold among the figure comprises the upper punch assembly, forms the counterdie 510 of lower mode cavity and from the upwardly extending stripping attachment 520 of lower mode cavity,
Described upper punch assembly comprises plug drift 530 and the drift fairlead 540 that is sheathed on plug drift periphery, and plug drift 530 extends described drift fairlead 540.Also can say, described plug drift 530 and described drift fairlead 540 fit in a combination upper punch structure.
Next introduce in detail the process of utilizing positive extruding mold just squeezing.Described cylinder blank 550 with penetrating endoporus is put into lower mode cavity.Described upper punch assembly moves downward, plug drift 530 is introduced in the endoporus of blank 550, proofread and correct the blank position, and the predetermined length H that plug drift 530 extends described drift fairlead 540 be blank 550 length h 2.5-3 doubly, after so just crowded operation is finished, described plug drift 530 is understood some outside the forging stock lower port, guarantees that forging stock can not produce the phenomenon that lower port inside contracts in extrusion process.Then drift fairlead 540 moves downward with blank 550 and contacts and extrusion billet, just squeezes, and when drift fairlead 540 contact blank 550, the length that drift fairlead 540 enters counterdie 510 is L, carries out guide effect.When just squeezing when finishing, the end of plug drift 530 exceeds the aperture, lower end 560 of just squeezing the operation forging stock, and and the stripping attachment 520 of counterdie bottom in ejector beam between leave gap b, general b is 2-4mm.
Because described upper punch assembly is split type structure; it is it drift fairlead 540 that comprises plug drift 530 and be sheathed on plug drift periphery; utilize drift fairlead 540 contact blanks 550 to push; reduce the pressure of plug drift 530; make not frangibility of plug drift 530; effectively protect the service life of upper punch assembly; and the upper punch assembly after cooperating utilizes drift fairlead 540 and counterdie 510 to carry out guiding by mould orifice; effectively raise the precision of product; the issuable problem of follow-up forging is reduced; also reduce the die change number of times, raise the efficiency, reduce cost.
Please refer to shown in Fig. 6 (a)-6 (g), it is the utility model shape of product change procedure figure in one embodiment.The shape of product that Fig. 6 (a) obtains for blanking procedure; The shape of product that Fig. 6 (b) obtains for the jumping-up operation; The shape of product that Fig. 6 (c) obtains for anti-crowded operation; The shape of product that Fig. 6 (d) obtains for drilling operating; Fig. 6 (e) is for just squeezing the shape of product that operation obtains; The shape of product that Fig. 6 (f) obtains for forming process; For to get the shape of product that farm labourer's order obtains, a is the aperture gradient with cylinder blank of penetrating endoporus to Fig. 6 (g).
The aperture of the product that anti-crowded operation obtains is designated as d1, this aperture also can be called as the anti-aperture d1 of squeezing, the aperture of the product that just crowded operation obtains is designated as d2, this aperture also can be called just squeezes aperture d2, the pass of the anti-aperture d1 of squeezing and just crowded aperture d2 is: 0<instead squeezes aperture d1-is just squeezing aperture d2≤0.1mm, anti-squeezing with just crowded operation mesoporous differs little, because it is bigger instead to squeeze the just crowded aperture of aperture ratio, be convenient to plug drift 530 and can pass through smoothly blank 550, to produce inner chamber folding and can not produce the inner chamber of endoporus and the friction of plug drift.
Principle of the present utility model is to adopt plug drift and drift fairlead are fitted in a combination upper punch structure; utilize the drift fairlead that blank is led and push; reduce the pressure of plug drift; make not frangibility of plug drift, effectively protect the service life of upper punch assembly, and because the guiding by mould orifice effect of drift fairlead can guarantee Product Precision; the issuable problem of follow-up forging is reduced; also reduce the die change number of times, raise the efficiency, reduce cost.
Above-mentioned explanation has fully disclosed the specific embodiment of the present utility model.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present utility model does not all break away from claims of the present utility model.Correspondingly, the scope of claim of the present utility model also is not limited only to previous embodiment.

Claims (3)

1. positive extruding mold, it is characterized in that, it is used for blanking, pier is thick, anti-squeezing, and the cylinder blank with penetrating endoporus that drilling operating obtains carries out forward extrusion, two hollow circular cylinders that have that diameter differs with formation and the forging stock of changeover portion between them, described positive extruding mold comprises the upper punch assembly, forms the counterdie of lower mode cavity and from the upwardly extending stripping attachment of lower mode cavity
Described upper punch assembly comprises plug drift and the drift fairlead that is sheathed on plug drift periphery, and described plug drift extends described drift fairlead, and described plug drift and described drift fairlead fit in a combination upper punch structure.
2. positive extruding mold according to claim 1 is characterized in that, the predetermined length that described plug drift extends described drift fairlead be charge length 2.5-3 doubly.
3. according to claim 1 or 2 described positive extruding molds, it is characterized in that, the anti-aperture of squeezing of instead squeezing product that operation obtains with the magnitude relationship of just squeezing the aperture of just squeezing the product that operation obtains is: 0<instead squeezes aperture-just squeezing aperture≤0.1mm.
CN 201220303771 2012-06-26 2012-06-26 Forward extrusion mould Active CN202752371U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220303771 CN202752371U (en) 2012-06-26 2012-06-26 Forward extrusion mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220303771 CN202752371U (en) 2012-06-26 2012-06-26 Forward extrusion mould

Publications (1)

Publication Number Publication Date
CN202752371U true CN202752371U (en) 2013-02-27

Family

ID=47731566

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220303771 Active CN202752371U (en) 2012-06-26 2012-06-26 Forward extrusion mould

Country Status (1)

Country Link
CN (1) CN202752371U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102729008A (en) * 2012-06-26 2012-10-17 盐城理研精密锻造有限公司 Method for forging cutting tooth boot and forward extrusion die
CN105880308A (en) * 2016-05-13 2016-08-24 河南平高电力设备有限公司 Two-time extruding die of moving contact and secondary-extruding die thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102729008A (en) * 2012-06-26 2012-10-17 盐城理研精密锻造有限公司 Method for forging cutting tooth boot and forward extrusion die
CN105880308A (en) * 2016-05-13 2016-08-24 河南平高电力设备有限公司 Two-time extruding die of moving contact and secondary-extruding die thereof

Similar Documents

Publication Publication Date Title
CN102729008A (en) Method for forging cutting tooth boot and forward extrusion die
CN103521615A (en) Die of overrunning clutch gland of motorcycle
CN102527897A (en) Forging method for thin-walled step short sleeve type main shaft flange of water turbine
CN104139279A (en) Manufacturing process for inner-trapezoid-groove ring piece
CN106607469B (en) Contact base extrusion die and its extrusion process
CN104139145A (en) Method for forging guide horn mouth forge pieces applied to internal components of nuclear reactor
CN103521616A (en) Die for overrun clutch cover of motorcycle and with stretching function
CN104384430A (en) Forging technology for thick-walled high cylindrical ring forgings
CN202752371U (en) Forward extrusion mould
CN102528391A (en) Forming method for improving coaxiality of backward-extruding inner cavity and external form of cardan sleeve
CN102744342A (en) Method for forging cutting-tooth forge piece
CN102699261A (en) Method for forging central hole of spline shaft forging
CN202752519U (en) Cold forging die for cutting tooth forged piece
CN103447445A (en) Cold forging finishing punch for inner cavities of finish-forge pieces of outer spherical cages
CN207127178U (en) Automotive hub outer ring forging precise forming mold
CN202894169U (en) Tooth-shaped tubular column cold forging gear hole extruding mould
CN203817260U (en) Combined type flange forming forging die
CN206588291U (en) A kind of EPB clamp forging equipment and its forging blank
KR102093877B1 (en) Manufacturing method of cylinder cover for ship using by profile ring-mill die forging
CN209736355U (en) Forming equipment for electrical contact
CN108188314B (en) Band ear cylinder proper forgings One-time forging Whole fiber moulding process
CN202639181U (en) Cold forging die
CN102744343B (en) Forging method of thin-wall drill bit and through diameter reducing die
CN104289652A (en) Extrusion forming cold-upsetting die and application method thereof
CN104550287A (en) Cold extrusion moulding device for tapered pipe

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 224100 West Zone, Dafeng District, Jiangsu, Yancheng City

Patentee after: Jiangsu R & D Polytron Technologies Inc

Address before: 224100 No. three, West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu

Patentee before: Yancheng Liyan Precision Forging Co.,Ltd.