CN202752519U - Cold forging die for cutting tooth forged piece - Google Patents

Cold forging die for cutting tooth forged piece Download PDF

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Publication number
CN202752519U
CN202752519U CN 201220273181 CN201220273181U CN202752519U CN 202752519 U CN202752519 U CN 202752519U CN 201220273181 CN201220273181 CN 201220273181 CN 201220273181 U CN201220273181 U CN 201220273181U CN 202752519 U CN202752519 U CN 202752519U
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CN
China
Prior art keywords
forging
die
cold forging
patrix
pick
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.)
Expired - Lifetime
Application number
CN 201220273181
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Chinese (zh)
Inventor
黄容
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
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Priority to CN 201220273181 priority Critical patent/CN202752519U/en
Application granted granted Critical
Publication of CN202752519U publication Critical patent/CN202752519U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a cold forging die for a cutting tooth forged piece. The cold forging die is used for performing one-step cold forging extrusion forming for a cutting tooth blank after discharging, annealing, cutting and blanking. The die comprises an upper punch, an upper die, a guide sleeve, a lower die and a return device, parting surfaces of the upper die and the lower die are in unclosed modes, and the blank is placed into the cold forging die for cold forging extrusion, so that the head of the cutting tooth forged piece is formed at one step. As the parting surfaces of the upper die and the lower die are in the unclosed modes, after an upper die cavity is filled with materials, surplus materials freely form flanges on the parting surfaces, and cracking due to excessive forging pressure is avoided. The upper die descends under the action of pressure in the forging process, and the dies are assembled by the aid of the guide sleeve for guiding, so that coaxiality is ensured. When the upper die is filled, the upper die continues to descend, upsetting effects are achieved, a step in the middle of the cutting tooth forged piece can be upset, forging force can be reduced by means of open forging, and the service life of the die is prolonged.

Description

The cold forging die of pick forging
[technical field]
The utility model relates to metal precision forging field, particularly a kind of cold forging die of pick forging.
[background technology]
Pick is the cutter of mining machinery cutting coal and rock, and consumption is very large in coal mining industry.Please refer to shown in Figure 1ly, it is a kind of schematic diagram of pick forging, and it comprises head 110 and bar section 120.The nose shape of this forging is taper, and bar section diameter is little, be fit to machining, but the machining consumptive material is many, and cost increases, and stock-removing efficiency is low, is unfavorable for producing in enormous quantities.Being in great demand of pick forging utilizes machining far can not meet the need of market.At present, can also adopt cold-forging technique to forge pick, this Forging Technology comprises following operation: blanking, annealing, base, ball blast, phospholeum, a forward extrusion, ball blast, phospholeum, the secondary forward extrusion, annealing, ball blast, phospholeum and extrusion molding all adopt cold-forging technique.Please refer to shown in Figure 2, it is all to adopt cold-forging technique to forge the shape of product change procedure figure of pick, the shape of product that obtains for blanking procedure of Fig. 2 (a) wherein, Fig. 2 (b) is the shape of product that forward extrusion operation obtains, the shape of product that Fig. 2 (c) obtains for secondary forward extrusion operation, the shape of product that Fig. 2 (d) obtains for the extrusion molding operation (being the shape of pick forging).This technique is extruded through the bar section 120 of repeatedly pushing the pick forging, because cold-extruded produces flow harden in forging process, therefore need before annealing in process in extrusion molding step (being the head 120 of extrusion molding pick forging), thereby increase cost, and repeatedly the extrusion die cost is high, and through repeatedly filling mould, the poor dimensional precision of middle forging, uniformity is low, is difficult to guarantee the axiality of final forging.
In sum, can raise the efficiency although all adopt cold-forging technique to forge pick, reduce consumptive material, its technological process is long, and the mould input cost is large, and the production cycle is long.
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 cold forging die of pick forging, and it can be raised the efficiency, and reduces cost, increases the service life.
To achieve these goals, the utility model proposes a kind of cold forging die of pick forging, it is used for the process blanking, annealing, the pick blank behind the cutting base carries out the cold forging extrusion molding one time, it is characterized in that, it comprises upper punch, patrix, fairlead, counterdie and stripping attachment, wherein the die joint of patrix and counterdie adopts not closed mode, and blank is put into cold forging die carry out the cold forging extruding, thus the head of the described pick forging of once-forming.
Further, described cutting base is that the blank after the annealing is carried out machining, thereby the bar section car of pick forging is gone out.
Further, described patrix is the integral type die cavity, and forging deformation is finished in patrix fully.
Further, in cold forging extrusion process, patrix is descending under pressure, carries out matched moulds by the fairlead guiding, after patrix is full of, continues descending generation jumping-up effect.
Compared with prior art, the cold forging die in the utility model adopts the structure of whole patrix, and mould structure is simple, and easily processing in the once-forming process, has reduced middle operation, has reduced cost, also reduces the error of intermediate sizes simultaneously, guarantees the product axiality.。
[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 pick forging;
Fig. 2 all adopts cold-forging technique to forge the shape of product change procedure figure of pick;
Fig. 3 is the forging method schematic flow sheet in one embodiment of the pick forging in the utility model;
Fig. 4 is the schematic diagram that cold forging die carries out a cold forging extrusion molding operation in the utility model; With
Fig. 5 is the shape of product change procedure figure in the forging method of the pick forging in the utility model.
[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 technique that the utility model adopts machining to combine with cold forging through a small amount of cutting base, goes out the bar section car of pick forging after blanking, annealing, the head of direct forming pick forging after effects on surface is processed, thus reduce operation, the reduction cost.
Please refer to shown in Figure 3ly, it is the forging method process chart in one embodiment of the pick forging in the utility model.Described technological process comprises the steps.
Step 310, blanking.
Described blanking is adjusted cutting length for selecting suitable bar, with Weight control in predefined scope.
Step 320, annealing.
Described annealing is that blank slowly is heated to uniform temperature, keeps enough time, then cools off with Reasonable Speed.Its objective is reduction hardness, improve machinability; Eliminate residual stress, stable dimensions reduces distortion and crackle tendency; Crystal grain thinning is adjusted tissue, eliminates tissue defects.
Step 330, cutting base.
Described cutting base is that the blank after the annealing is carried out machining, thereby the bar section car of pick forging is gone out.Because this operation adopts machined cutting base (namely being gone out by the lathe car), its precision is high, can guarantee the dimensional accuracy of blank.Although the cutting preforming increases to some extent than original technique on raw material, but adopt the cutting preforming to obtain the bar section of pick forging, compare to have saved with original technique and extrude the used mould of bar section and intermediate surface treatment process, and the turning blank does not have the generation of flow harden, therefore, the follow-up annealing in process that do not need has shortened the production cycle.
Step 340, ball blast, phospholeum.
Described ball blast, phospholeum turn to conventional ball blast and phospholeum, mainly are for a follow-up cold forging extrusion molding operation provides lubricating film, are in order to reduce the frictional force between blank and the mould, effectively to protect mould, improving die life.
Step 350, a cold forging extrusion molding.
A described cold forging extrusion molding carries out the cold forging extruding for blank is put into cold forging die, thus the head of the described pick forging of once-forming.
In sum, the technique that the utility model adopts machining to combine with cold forging, blanking, annealing after through a small amount of cutting base, the bar section car of pick forging is gone out, and the head of direct forming pick forging after effects on surface is processed is compared with the forging method that aforementioned whole employing cold-forging techniques forge pick, twice ball blast, phospholeum have been reduced, once anneal and twice forward extrusion operation, thereby improved efficient, reduced cost.
Please refer to shown in Figure 4ly, it is to utilize cold forging die to carry out the shaping schematic diagram of a cold forging extrusion molding step.
Wherein, 410 is upper punch, and 420 is patrix, and 430 is fairlead, and 440 is counterdie, and 450 is stripping attachment, and 460 is blank, and 470 is die joint.
Described cold forging die is one-time forming die, and it comprises upper punch 410, patrix 420, fairlead 430, counterdie 440 and stripping attachment 450.
Described patrix 420 is mode structure on the whole, and namely patrix is the integral type die cavity, and forging deformation is finished in patrix fully, thereby accomplishes the effect of once-forming head.Adopt this kind structure, can guarantee the life-span of mould.
Upper and lower mould die joint 470 adopts not closed mode, and excess stock is freely formed flange at die joint 470 after material is full of upper model cavity, so can be because of because the excessive generation of forging pressure cracking.In the forging process, patrix 420 is descending under pressure, by fairlead 430 guiding, carries out matched moulds, thereby assurance axiality, after patrix 420 is full of, continue descendingly, produce the jumping-up effect, get final product the middle step of jumping-up pick forging, the employing open type is forged, and can reduce forging force, improves die life.
In sum, described cold forging die adopts the structure of whole patrix, and mould structure is simple, and easily processing in the once-forming process, has reduced middle operation, has reduced cost, also reduces the error of intermediate sizes simultaneously, guarantees the product axiality.
Please refer to shown in Figure 5ly, it is the utility model shape of product change procedure figure in one embodiment.Wherein Fig. 5 (a) is the shape of product schematic diagram (being the shape schematic diagram of blank) behind the blanking procedure, Fig. 5 (b) is the shape of product schematic diagram (being the shape schematic diagram of blank) after the cutting preforming, Fig. 5 (c) is the shape of product schematic diagram (being the shape schematic diagram of forging) behind the extrusion molding, and wherein 510 are the cutting position.
An aspect of the present utility model is the technique that adopts machined cutting base to combine with cold-extrusion shaping, machined cuts pick forging bar section, pass through again the head of an extrusion molding pick forging, change the forging of bar section into the machined cutting, improved production efficiency, reduced the expense of mould and middle operation, although more than the forging method of the pick forging that all adopts cold-forging technique in spillage of material, but the loss of compound material, the reduction of die cost, the minimizing of operation, and the shortening of production cycle, the raising of production efficiency is used the cost of the forging method of pick forging of the present utility model to compare with original technique and has been descended 30%, efficient has improved 50% than originally simultaneously, and Product Precision is also higher.In yet another aspect, the utility model proposes a kind of novel cold forging die, mould structure is simple, and easily processing in the once-forming process, has reduced middle operation, has reduced cost, also reduces the error of intermediate sizes simultaneously, guarantees the product axiality.
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. the cold forging die of a pick forging, it is used for the process blanking, annealing, pick blank behind the cutting base carries out the cold forging extrusion molding one time, it is characterized in that, it comprises upper punch, patrix, fairlead, counterdie and stripping attachment, and wherein the die joint of patrix and counterdie adopts not closed mode, blank is put into cold forging die carry out the cold forging extruding, thus the head of the described pick forging of once-forming.
2. cold forging die according to claim 1 is characterized in that, described patrix is the integral type die cavity, and forging deformation is finished in patrix fully.
3. cold forging die according to claim 1 is characterized in that, in cold forging extrusion process, patrix is descending under pressure, carries out matched moulds by the fairlead guiding, after patrix is full of, continues descending generation jumping-up effect.
CN 201220273181 2012-06-11 2012-06-11 Cold forging die for cutting tooth forged piece Expired - Lifetime CN202752519U (en)

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Application Number Priority Date Filing Date Title
CN 201220273181 CN202752519U (en) 2012-06-11 2012-06-11 Cold forging die for cutting tooth forged piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220273181 CN202752519U (en) 2012-06-11 2012-06-11 Cold forging die for cutting tooth forged piece

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CN202752519U true CN202752519U (en) 2013-02-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962489A (en) * 2014-03-24 2014-08-06 大丰市中德精锻件有限公司 Cutting tooth forge piece forming die upper die structure
CN104564923A (en) * 2014-12-31 2015-04-29 东莞以利沙五金制品有限公司 T-shaped flange and manufacturing method thereof
CN105081175A (en) * 2015-07-16 2015-11-25 重庆大江杰信锻造有限公司 Novel guide column and guide sleeve structure of crankshaft forging die
CN105252240A (en) * 2015-10-30 2016-01-20 大丰市昱祺机械制造有限公司 Forming method for special-shaped cutting tooth with reinforcing ribs
CN112475180A (en) * 2020-11-12 2021-03-12 中国第一重型机械股份公司 Forging die and method for step shaft type forge piece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962489A (en) * 2014-03-24 2014-08-06 大丰市中德精锻件有限公司 Cutting tooth forge piece forming die upper die structure
CN104564923A (en) * 2014-12-31 2015-04-29 东莞以利沙五金制品有限公司 T-shaped flange and manufacturing method thereof
CN105081175A (en) * 2015-07-16 2015-11-25 重庆大江杰信锻造有限公司 Novel guide column and guide sleeve structure of crankshaft forging die
CN105252240A (en) * 2015-10-30 2016-01-20 大丰市昱祺机械制造有限公司 Forming method for special-shaped cutting tooth with reinforcing ribs
CN105252240B (en) * 2015-10-30 2017-11-24 盐城昱祺机械制造有限公司 A kind of manufacturing process of the abnormity with reinforcement shape pick
CN112475180A (en) * 2020-11-12 2021-03-12 中国第一重型机械股份公司 Forging die and method for step shaft type forge piece

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C14 Grant of patent or utility model
GR01 Patent grant
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.

CP03 Change of name, title or address
CX01 Expiry of patent term

Granted publication date: 20130227

CX01 Expiry of patent term