CN102744342A - Method for forging cutting-tooth forge piece - Google Patents
Method for forging cutting-tooth forge piece Download PDFInfo
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- CN102744342A CN102744342A CN2012101908895A CN201210190889A CN102744342A CN 102744342 A CN102744342 A CN 102744342A CN 2012101908895 A CN2012101908895 A CN 2012101908895A CN 201210190889 A CN201210190889 A CN 201210190889A CN 102744342 A CN102744342 A CN 102744342A
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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 consumption is very big in coal mining industry.Please refer to shown in Figure 1ly, it is a kind of sketch map 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 fit to cut, but the cut 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 cut 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, phospholeumization, a forward extrusion, ball blast, phospholeumization; The secondary forward extrusion, annealing, ball blast, phospholeumization 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 the blanking operation 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 technology is extruded through the bar portion 120 of repeatedly pushing the pick forging, because cold-extruded produces flow harden in forging process, therefore needs annealing in process before 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 adorning 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 though all adopt cold-forging technique to forge pick, reduce consumptive material, its technological process is long, and the mould input cost is big, 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 cost.
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.Said cutting base is that the blank after the annealing is carried out cut, thereby the bar portion car of pick forging is gone out; A said cold forging extrusion molding carries out the cold forging extruding for blank being put into cold forging die, thus the head of the said pick forging of once-forming.
Further, said 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 again, said patrix is the integral type die cavity, and forging deformation is accomplished in patrix fully.
Further, in cold forging extrusion process, patrix is descending under pressure, carries out matched moulds through the fairlead guiding, after patrix is full of, continues descending generation jumping-up effect.
Further, after the cutting base with cold forging extrusion modling ball blast and phospholeumization afterwards.
Compared with prior art, the present invention adopts cut and cold forging process combined, in blanking, annealing after the cutting base of too small amount; The bar portion car of pick forging is gone out; The head of direct forming pick forging after surface treatment, thus operation reduced, reduce cost.
[description of drawings]
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.Wherein:
Fig. 1 is a kind of sketch map 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 among the present invention;
Fig. 4 carries out the sketch map of a cold forging extrusion molding operation for cold forging die among the present invention; With
Fig. 5 is the shape of product change procedure figure in the forging method of the pick forging among the present invention.
[specific embodiment]
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and the specific embodiment the present invention done further detailed explanation.
Alleged here " embodiment " or " embodiment " are meant special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention.Different in this manual local " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or optionally mutually exclusive with other embodiment embodiment.
The present invention adopts cut and cold forging process combined,, the bar portion car of pick forging is gone out after the cutting base of too small amount in blanking, annealing, to the head of direct forming pick forging after the surface treatment, thereby reduces operation, reduces cost.
Please refer to shown in Figure 3ly, it is for the forging method process chart in one embodiment of pick forging of the present invention.Said technological process comprises the steps.
Said blanking is for selecting suitable bar, the adjustment cutting length, with Weight control in predefined scope.
Said annealing is that blank slowly is heated to uniform temperature, keeps the enough time, cools off with Reasonable Speed then.Its objective is reduction hardness, improve machinability; Eliminate residual stress, stable dimensions reduces distortion and crackle tendency; Crystal grain thinning, the adjustment tissue is eliminated tissue defects.
Said cutting base is that the blank after the annealing is carried out cut, thereby the bar portion car of pick forging is gone out.Because this operation adopts machined cutting base (promptly being gone out by the lathe car), its precision is high, can guarantee the dimensional accuracy of blank.Though the cutting preforming increases than original technology on raw material to some extent; But adopt the cutting preforming to obtain the bar portion of pick forging; Compare to have practiced thrift with original technology and extrude used mould of bar portion and intermediate surface treatment process, and the turning blank do not have the generation of flow harden, therefore; The follow-up annealing in process that do not need has shortened the production cycle.
Said ball blast, phospholeum turn to conventional ball blast and phospholeumization, 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, to protect mould effectively, improving die life.
A said cold forging extrusion molding carries out the cold forging extruding for blank is put into cold forging die, thus the head of the said pick forging of once-forming.
In sum, the present invention adopts cut and cold forging process combined, in blanking, annealing after the cutting base of too small amount; The bar portion car of pick forging is gone out,, compare with the forging method that aforementioned whole employing cold-forging techniques forge pick to the head of direct forming pick forging after the surface treatment; Twice ball blast, phospholeumization 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 mould to carry out the shaping sketch map 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.
Said mould is an one-time forming die, and it comprises upper punch 410, patrix 420, fairlead 430, counterdie 440 and stripping attachment 450.
Said patrix 420 is mode structure on the whole, and promptly patrix is the integral type die cavity, and forging deformation is accomplished 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 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, through fairlead 430 guiding; Carry out matched moulds, thereby guarantee axiality, after patrix 420 is full of; Continue descendingly, produce the jumping-up effect, the step in the middle of can jumping-up pick forging; The employing open type is forged, and can reduce forging force, improves die life.
In sum, said mould adopts cold forging die, the structure of whole patrix, and mould structure is simple, is prone to 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 present invention shape of product change procedure figure in one embodiment.Wherein Fig. 5 (a) is the shape of product sketch map (being the shape sketch map of blank) after the blanking operation; Fig. 5 (b) is the shape of product sketch map (being the shape sketch map of blank) after the cutting preforming; Fig. 5 (c) is the shape of product sketch map (being the shape sketch map of forging) behind the extrusion molding, and wherein 510 are the cutting position.
Principle of the present invention is to adopt machined cutting base and cold-extrusion shaping process combined, and machined cuts pick forging bar portion, passes through the head of an extrusion molding pick forging again; Change the forging of bar portion into the machined cutting, improved production efficiency, reduced the expense of mould and middle operation; Though the forging method than the pick forging that all adopts cold-forging technique in spillage of material is many, 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 invention to compare with original technology and has been descended 30%; Efficient has improved 50% than originally simultaneously, and the product precision is also higher.
Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that any change that technical staff's specific embodiments of the invention of being familiar with this field is done does not all break away from the scope of claims of the present invention.Correspondingly, the scope of claim of the present invention also is not limited only to previous embodiment.
Claims (5)
1. the forging method of a pick forging is characterized in that, it comprises blanking, annealing, and cutting base and a cold forging extrusion molding,
Said cutting base is that the blank after the annealing is carried out cut, thereby the bar portion car of pick forging is gone out;
A said cold forging extrusion molding carries out the cold forging extruding for blank being put into cold forging die, thus the head of the said pick forging of once-forming.
2. method according to claim 1 is characterized in that said 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 said patrix is the integral type die cavity, and forging deformation is accomplished in patrix fully.
4. method according to claim 2 is characterized in that, in cold forging extrusion process, patrix is descending under pressure, carries out matched moulds through the fairlead guiding, after patrix is full of, continues descending generation jumping-up effect.
5. method according to claim 1 is characterized in that it also comprises: after the cutting base with cold forging extrusion modling ball blast and phospholeumization before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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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| CN102744342A true CN102744342A (en) | 2012-10-24 |
| CN102744342B CN102744342B (en) | 2014-09-10 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103264265A (en) * | 2013-05-31 | 2013-08-28 | 安徽诚创工贸有限公司 | Extrusion forming process for brake wheel |
| CN103658476A (en) * | 2013-12-06 | 2014-03-26 | 天津重型装备工程研究有限公司 | Integrated forming method for thick-wall hollow forge piece with boss on abnormal end face excircle |
| 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103264265A (en) * | 2013-05-31 | 2013-08-28 | 安徽诚创工贸有限公司 | Extrusion forming process for brake wheel |
| CN103264265B (en) * | 2013-05-31 | 2015-04-22 | 安徽诚创工贸有限公司 | Extrusion forming process for brake wheel |
| CN103658476A (en) * | 2013-12-06 | 2014-03-26 | 天津重型装备工程研究有限公司 | Integrated forming method for thick-wall hollow forge piece with boss on abnormal end face excircle |
| 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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|---|---|
| CN102744342B (en) | 2014-09-10 |
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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. |