CN102744342B - Method for forging cutting-tooth forge piece - Google Patents
Method for forging cutting-tooth forge piece Download PDFInfo
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- CN102744342B CN102744342B CN201210190889.5A CN201210190889A CN102744342B CN 102744342 B CN102744342 B CN 102744342B CN 201210190889 A CN201210190889 A CN 201210190889A CN 102744342 B CN102744342 B CN 102744342B
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Abstract
The invention provides a method for forging a cutting-tooth forge piece. The method comprises the steps of blanking, cutting and blank making and one-time cold forging extrusion forming. The cutting and blank making is that cutting processing is performed to an annealed blank and accordingly a rod part of the cutting-tooth forge piece is turned. The one-time cold forging extrusion molding is that the blank is placed into a cold forging die to be subjected to cold forging extrusion and accordingly a head of the cutting-tooth forge piece is formed in one time. The method adopted a process integrating the cutting processing and cold forging, the rod part of the cutting-tooth forge piece is turned through a small amount of cutting and blank making after blanking and annealing, and the head of the cutting-tooth forge piece is directly formed after surface treatment, thereby decreasing the processes and reducing the cost.
Description
[technical field]
The present invention relates to metal precision forging field, particularly a kind of forging method of pick forging.
[background technology]
Pick is the cutter of mining machinery cutting coal and rock, and in coal mining industry, consumption is very large.Please refer to shown in Fig. 1, it is a kind of schematic diagram of pick forging, and it comprises head 110 and bar portion 120.The nose shape of this forging is taper, and bar portion diameter is little, be applicable to machining, but 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, secondary forward extrusion, annealing, ball blast, phospholeum and extrusion molding, all adopt cold-forging technique.Please refer to shown in Fig. 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 wherein Fig. 2 (a) obtains for blanking procedure, 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 extrusion molding operation (being the shape of pick forging).This technique is extruded the bar portion 120 of pick forging through repeatedly pushing, because cold-extruded in forging process produces flow harden, therefore in extrusion molding step (being the head 120 of extrusion molding pick forging), need before annealing in process, thereby increase cost, and repeatedly 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, although all adopt cold-forging technique to forge pick, can raise the efficiency, reduce consumptive material, its technological process is long, and 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.
[summary of the invention]
The object of the present invention is to provide a kind of forging method of pick forging, it can be raised the efficiency, and reduces costs.
To achieve these goals, the present invention proposes a kind of forging method of pick forging, and it comprises blanking, annealing, cutting base, and a cold forging extrusion molding.Described cutting base is that the blank after annealing is carried out to machining, thereby the bar portion car of pick forging is gone out; A described cold forging extrusion molding carries out cold forging extruding for blank is put into cold forging die, thus the head of pick forging described in once-forming.
Further, described cold forging die comprises upper punch, patrix, fairlead, counterdie and stripping attachment, and wherein the die joint of patrix and counterdie adopts not closed mode.
Further, described patrix is integral type die cavity, and forging deformation completes completely in patrix.
Further, in a cold forging extrusion process, patrix is descending under pressure, by fairlead, is led and is carried out matched moulds, after patrix is full of, continues descending generation jumping-up effect.
Further, ball blast and the phospholeum after cutting base and after a cold forging extrusion modling.
Compared with prior art, the technique that the present invention adopts machining to combine with cold forging, blanking, annealing after through a small amount of cutting base, the bar portion car of pick forging is gone out, the head of direct forming pick forging after surface treatment, thus operation reduced, reduce costs.
[accompanying drawing explanation]
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of 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 schematic flow sheet in one embodiment of forging method of the pick forging in the present invention;
Fig. 4 is the schematic diagram that in the present invention, cold forging die carries out a cold forging extrusion molding operation; With
Fig. 5 is the shape of product change procedure figure in the forging method of the pick forging in the present invention.
[specific embodiment]
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Alleged " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention herein.Different local in this manual " in one embodiment " that occur not all refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
The technique that the present invention adopts machining to combine with cold forging through a small amount of cutting base, goes out the bar portion car of pick forging after blanking, annealing, and effects on surface is processed the head of rear direct forming pick forging, thereby reduces operation, reduces costs.
Please refer to shown in Fig. 3, it is the forging method of pick forging of the present invention process chart in one embodiment.Described technological process comprises the steps.
Step 310, blanking.
Described blanking, for selecting suitable bar, is adjusted cutting length, by Weight control in predefined scope.
Step 320, annealing.
Described annealing is that blank is slowly heated to uniform temperature, keeps enough time, then cooling with Reasonable Speed.Its objective is reduction hardness, improve machinability; Eliminate residual stress, stable dimensions, reduces distortion and crackle tendency; Crystal grain thinning, adjusts tissue, eliminates tissue defects.
Step 330, cutting base.
Described cutting base is that the blank after annealing is carried out to machining, thereby the bar portion car of pick forging is gone out.Because this operation adopts machined cutting base (being gone out by lathe car), its precision is high, can guarantee the dimensional accuracy of blank.Although cutting preforming increases to some extent than original technique on raw material, but adopt cutting preforming to obtain the bar portion of pick forging, compare with original technique to have saved and extrude bar portion mould used and intermediate surface treatment process, and 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, are mainly for a follow-up cold forging extrusion molding operation provides lubricating film, are in order to reduce the frictional force between blank and mould, effectively to protect mould, improve die life.
Step 350, a cold forging extrusion molding.
A described cold forging extrusion molding, for blank is put into cold forging die, carries out cold forging extruding, thus the head of pick forging described in once-forming.
In sum, the technique that the present invention adopts machining to combine with cold forging, blanking, annealing after through a small amount of cutting base, the bar portion car of pick forging is gone out, and effects on surface is processed the head of rear direct forming pick forging, compares with the forging method that aforementioned whole employing cold-forging techniques forge picks, twice ball blast, phospholeum have been reduced, once anneal and twice forward extrusion operation, thereby improved efficiency, reduced cost.
Please refer to shown in Fig. 4, it is to utilize mould 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 mould 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 patrix is integral type die cavity, and forging deformation completes completely in patrix, thereby accomplishes the effect of once-forming head.Adopt this kind of structure, can guarantee the life-span of mould.
Upper and lower mould die joint 470 adopts not closed mode, and after material is full of upper model cavity, excess stock is freely formed flange at die joint 470, so can be because of due to the excessive generation of forging pressure cracking.In forging process, patrix 420 is descending under pressure, by fairlead 430, leads, and carries out matched moulds, thereby assurance axiality, after patrix 420 is full of, continue descendingly, produce jumping-up effect, get final product the middle step of jumping-up pick forging, employing open type is forged, and can reduce forging force, improves die life.
In sum, described mould adopts cold forging die, the structure of whole patrix, and mould structure is simple, and easily processing, in once-forming process, has reduced middle operation, has reduced cost, also reduces the error of intermediate sizes simultaneously, guarantees product axiality.
Please refer to shown in Fig. 5, it is the present invention 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) after blanking procedure, Fig. 5 (b) is for cutting the shape of product schematic diagram (being the shape schematic diagram of blank) after preforming, Fig. 5 (c) is a shape of product schematic diagram (being the shape schematic diagram of forging) after extrusion molding, and wherein 510 is cutting position.
Principle of the present invention is the technique that adopts machined cutting base to combine with cold-extrusion shaping, machined cuts pick forging bar portion, again by the head of an extrusion molding pick forging, bar portion is forged and changes machined cutting into, improved production efficiency, reduced the expense of mould and middle operation, although more than the forging method of the pick forging of whole employing cold-forging techniques 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, use the cost of the forging method of pick forging of the present invention to compare and declined 30% with original technique, efficiency has improved 50% than originally simultaneously, Product Precision is also higher.
Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that being familiar with any change that person skilled in art does the specific embodiment of the present invention does not all depart from the scope of claims of the present invention.Correspondingly, the scope of claim of the present invention is also not limited only to previous embodiment.
Claims (5)
1. a forging method for pick forging, is characterized in that, it comprises blanking, annealing, and cutting base, and a cold forging extrusion molding,
Described cutting base is that the blank after annealing is carried out to machining, thereby the bar portion car of pick forging is gone out;
A described cold forging extrusion molding carries out cold forging extruding for blank is put into cold forging die, thus the head of pick forging described in once-forming.
2. method according to claim 1, is characterized in that, described cold forging die comprises upper punch, patrix, fairlead, counterdie and stripping attachment, and wherein the die joint of patrix and counterdie adopts not closed mode.
3. method according to claim 2, is characterized in that, described patrix is integral type die cavity, and forging deformation completes completely in patrix.
4. method according to claim 2, is characterized in that, in a cold forging extrusion process, patrix is descending under pressure, by fairlead, is led and is carried out matched moulds, after patrix is full of, continues descending generation jumping-up effect.
5. method according to claim 1, is characterized in that, it also comprises: ball blast and phospholeum after cutting base and before a cold forging extrusion modling.
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| CN201210190889.5A CN102744342B (en) | 2012-06-11 | 2012-06-11 | Method for forging cutting-tooth forge piece |
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| CN201210190889.5A CN102744342B (en) | 2012-06-11 | 2012-06-11 | Method for forging cutting-tooth forge piece |
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| CN102744342B true CN102744342B (en) | 2014-09-10 |
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| CN103231000A (en) * | 2013-01-18 | 2013-08-07 | 洛阳秦汉冷锻有限公司 | Final-forming die for precisely forging large-scaled moving contact |
| CN103264265B (en) * | 2013-05-31 | 2015-04-22 | 安徽诚创工贸有限公司 | Extrusion forming process for brake wheel |
| CN103658476B (en) * | 2013-12-06 | 2015-08-26 | 天津重型装备工程研究有限公司 | A kind of thick-wall hollow forging integral forming method of special-shaped angle head cylindrical band boss |
| CN103909190A (en) * | 2014-03-24 | 2014-07-09 | 大丰市中德精锻件有限公司 | Cold extrusion forming process of ribbed pick forgings |
| US10702912B2 (en) | 2016-11-09 | 2020-07-07 | Intai Technology Corp. | Composite manufacturing method with extruding and turning processes |
| CN111604449A (en) * | 2020-04-30 | 2020-09-01 | 徐云涛 | Forging forming method for cutting tooth with reinforcing rib |
| CN115139055A (en) * | 2021-03-31 | 2022-10-04 | 无锡瑞顺机械有限公司 | Production process of internal spline of gear shaft |
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| GB1239142A (en) * | 1969-03-17 | 1971-07-14 | ||
| CN1507963A (en) * | 2002-12-17 | 2004-06-30 | 张俊清 | Spline shaft processing method using cold extrusion of meidium carbon steel |
| CN100343011C (en) * | 2003-12-09 | 2007-10-17 | 泰安市科大金纳等离子科技有限公司 | Technical method for producing pick type cutting bit |
| US7896720B2 (en) * | 2006-03-14 | 2011-03-01 | Ngk Spark Plug Co., Ltd. | Method of producing spark plug, and spark plug |
| CN101041352A (en) * | 2007-04-20 | 2007-09-26 | 王金水 | Aluminium-made valve rod for automobile brake pump and manufacturing technique thereof |
| CN101342566B (en) * | 2008-08-25 | 2010-10-13 | 江苏创一精锻有限公司 | Integral cold forging technique for angular wheel shaft |
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Effective date of registration: 20160114 Address after: 224100 East Road, Dafeng Economic and Technological Development Zone, Jiangsu, Yancheng City 3, China Patentee after: DAFENG YUQI MACHINERY MANUFACTURING CO., LTD. Address before: 224100 No. three, West Road, Dafeng Economic and Technological Development Zone, Yancheng City, Jiangsu Patentee before: Yancheng Liyan Precision Forging Co.,Ltd. |
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Address after: 224100 East Road, Dafeng Economic Zone, Dafeng District, Jiangsu, Yancheng City 3, China Patentee after: Yancheng Yu Fan Machinery Manufacturing Co., Ltd. Address before: 224100 East Road, Dafeng Economic and Technological Development Zone, Jiangsu, Yancheng City 3, China Patentee before: DAFENG YUQI MACHINERY MANUFACTURING CO., LTD. |
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Effective date of registration: 20200619 Address after: No.19, Shenfeng North Road, Dafeng District, Yancheng City, Jiangsu Province Patentee after: JIANGSU LIKEN TECHNOLOGY Co.,Ltd. Address before: 224100 East Road, Dafeng Economic and Technological Development Zone, Dafeng District, Jiangsu, Yancheng City 3 Patentee before: YANCHENG YUQI MACHINERY MANUFACTURING Co.,Ltd. |
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