CN104588490B - Cold stamping method - Google Patents
Cold stamping method Download PDFInfo
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- CN104588490B CN104588490B CN201410842947.7A CN201410842947A CN104588490B CN 104588490 B CN104588490 B CN 104588490B CN 201410842947 A CN201410842947 A CN 201410842947A CN 104588490 B CN104588490 B CN 104588490B
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Abstract
The invention discloses a cold stamping method, which is used for manufacturing a finished product with a diameter. A through hole is formed in the center of the finished product; an annular groove is also formed in the finished product. According to the cold stamping method, a discharging chart is designed according to the determined workblank diameter and the determined pore diameter, a workblank is manufactured by a punching and blanking compound die according to the discharging chart, the workblank is punched to form the through hole, the workblank is placed in the annular groove which is formed by punching a drawing die, the finished product can be formed, no deburring is needed, and the technical problems that a pair of deburring dies needs to be added in the prior art, so that the cost of the produced product is increased, and a place is needed for placing the pair of deburring dies are solved.
Description
Technical field
The present invention relates to punch forming technical field, more particularly, to a kind of cold stamping method.
Background technology
The general method adopting at present is mainly that blanking die blanking, mould of extending be compressing, surplus is punched down by trimming die
Carry out (or machining removes) this three roads conventional processes and complete production.
It is to determine that " blank area is equal to and draws by the not thinning principle of part of extending (or drip molding) when determining blank dimension
Stretch part area ".Actually, extend part (or drip molding) blank area not constant, it is subject to material property, mould structure and several
The impact of the factors such as what parameter, lubricating condition and part of extending (or drip molding) geometry, some meetings produce quite may be used
For example, the change (when spherical partses are extended, blank area may increase 3-8%) seen, and each enterprise machine due to different field
The difference of tool equipment, manufacture division of labor and lines of specialities is more and more specialized, it is often necessary to increase by a secondary trimming die therefore in practical operation,
Thus lead to converted products cost increase, and also need to place and place this secondary trimming die.
Content of the invention
The application provides a kind of cold stamping method, solves or part solves to need in prior art to increase and minors in side
Mould, thus lead to converted products cost increase, and also need to the technical problem that this secondary trimming die is placed in place.
The application provides a kind of cold stamping method, and for making a finished product with diameter, described finished product center offers
Annular groove is also had on through hole, and described finished product, described cold stamping method includes:
According to the blank diameter determining and the aperture design marker map of determination, described blank diameter and described aperture are bases
The aperture of the diameter of described finished product and described through hole determines；
Blank is made according to described marker map using punching and blanking compound die, and punching is described to be formed on blank simultaneously
Through hole, the punch-die of described punching and blanking compound die, die, piercing punch Blade dimensions are by the blank diameter of described determination and institute
The aperture stating determination determines；
Described blank is placed on mould of extending and is stamped and formed out described annular groove, to form described finished product, described mould of extending
Size according to described finished product determines.
Preferably, before the described design marker map according to the blank diameter determining, methods described also includes:
Cut the sample blank in a specimen finish and sample aperture using cutting machine；
By described sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form a sample finished product；
The relatively aperture difference between described sample finished product and described finished product and difference in height；
When described aperture difference and described difference in height are more than a preset value, revise described specimen finish, remake sample
Finished product；
When described aperture difference and described difference in height are less than or equal to described preset value, by described specimen finish and described sample
Aperture is defined as the blank diameter of described determination and the aperture of described determination.
Preferably, described specimen finish is equal to the twice of described radius of specimen, and described radius of specimen is equal to described finished product
Area is divided by π, then opens radical sign.
Preferably, before the described design marker map according to the blank diameter determining, methods described also includes:
N specimen finish difference sample blank different with sample aperture is cut using cutting machine, described n be more than or equal to
2 integer；
By described n sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form n sample one-tenth
Product；
The relatively described n sample finished product aperture difference and described finished product between and diameter difference respectively, will with described finished product it
Between aperture difference and the minimum specimen finish of sample finished product corresponding sample blank of diameter difference and sample aperture be defined as described
The blank diameter determining and the aperture of described determination.
The application has the beneficial effect that:
Above-mentioned cold stamping method is according to the blank diameter determining and the aperture design marker map of determination, multiple using punching and blanking
Matched moulds makes blank according to described marker map, and on blank, punching, to form described through hole, described blank is placed in and draws simultaneously
Stretch and described annular groove is stamped and formed out on mould, you can form described finished product, and deburring need not be carried out, solve or part solves
Need to increase a secondary trimming die in prior art, thus lead to converted products cost increase, and also need to that place places should
The technical problem of secondary trimming die.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some
Embodiment.
Fig. 1 is the method flow diagram of the application one better embodiment cold stamping method；
Fig. 2 is the arrangement figure making finished product using cold stamping method in Fig. 1；
Fig. 3 is the generalized section of the blank being made using cold stamping method in Fig. 1；
Fig. 4 is the top view of the finished product being made using cold stamping method in Fig. 1；
Fig. 5 is the generalized section of finished product in Fig. 4；
Fig. 6 is the generalized section of punching and blanking compound die；
Fig. 7 is the generalized section of the other direction of punching and blanking compound die in Fig. 6；
Fig. 8 is to extend the top view of mould；
Fig. 9 is to extend the generalized section of mould.
Specific embodiment
In order to be better understood from technique scheme, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail.
Fig. 1 is the method flow diagram of the application one better embodiment cold stamping method.Described cold stamping method is used for making
Make a finished product with diameter.As shown in Figure 4 and Figure 5, described finished product center offers through hole, and also has annular on described finished product
Groove.As shown in figure 1, described cold stamping method comprises the following steps:
Step 110, according to the blank diameter determining and aperture design marker map, described blank diameter and the described hole of determination
Footpath is that the aperture of diameter according to described finished product and described through hole determines.Refer to Fig. 2, the blank diameter of described determination and really
Fixed aperture by the orifice size calculation of the diameter of described finished product and described through hole out can refer to subsequent descriptions in detail.
Step 120, using punching and blanking compound die according to described marker map make blank, and simultaneously on blank punching with
Form described through hole, as shown in Figure 3.Please referring also to Fig. 6 and Fig. 7, described punching and blanking compound die include guide pin bushing 1, guide pillar 2,
Die shoe 3, cushion 4, unloading bolt 5, stripper 6, punch-die 7, fixed seat 8, alignment pin 9, spring 10, cover plate 11, punching
Punch 12, punch retainer 13, pusher screw 14, scraping wings 15, die 16, upper bolster 17, straight pin 21, screw 22, cylinder
Pin 23, screw 24, screw 25, slotted countersunk flat head screw 26.The punch-die 7 of described punching and blanking compound die, die 16, piercing punch
12 Blade dimensions are determined by the blank diameter of described determination and the aperture of described determination.
Step 130, described blank is placed on mould of extending and is stamped and formed out described annular groove, to form described finished product, institute
State mould of extending to be determined according to the size of described finished product.
As shown in Figure 8 and Figure 9, described mould of extending includes unloading bolt 1, binder block 2, unloading bolt 3, cushion 4, pad
5th, fixed seat 6, upper bolster 7, die shoe 8, unloading bolt 9, cushion 10, pad 11, shaping top board 12, molding concave die 13, limit
Away from pin 14, alignment pin 15, blank holder 16, forming convax mould 17, guide pin bushing 18, screw 21, straight pin 22, screw 23, straight pin 24.
Above-mentioned cold stamping method is according to the blank diameter determining and the aperture design marker map of determination, multiple using punching and blanking
Matched moulds makes blank according to described marker map, and on blank, punching, to form described through hole, described blank is placed in and draws simultaneously
Stretch and described annular groove is stamped and formed out on mould, you can form described finished product, and deburring need not be carried out, solve or part solves
Need to increase a secondary trimming die in prior art, thus lead to converted products cost increase, and also need to that place places should
The technical problem of secondary trimming die.
Specifically, in step 110, before the described design marker map according to the blank diameter determining, methods described also includes:
Cut the sample blank in a specimen finish and sample aperture using cutting machine, specifically, described specimen finish is equal to
The twice of described radius of specimen, described radius of specimen is equal to the area of described finished product divided by π, then opens radical sign；
By described sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form a sample finished product；
The relatively aperture difference between described sample finished product and described finished product and difference in height；
When described aperture difference and described difference in height are more than a preset value, revise described specimen finish, remake sample
Finished product, described preset value can be the maximum magnitude of tolerance；
When described aperture difference and described difference in height are less than or equal to described preset value, by described specimen finish and described sample
Aperture is defined as the blank diameter of described determination and the aperture of described determination.
Introduce said method implementation procedure below by way of specific implementation:
1st, specimen finish and sample aperture are determined.
" blank area is equal to part area (i.e. finished product area) of extending " is pressed according to foundary weight size and calculates blank area, then really
Determine blank dimension, area f=π d1h+ π (2 π r1d2+8r1r1)/4+ π (π r1d2 α/the 180-2r1h1)+π of finished product (π r2d3 α/
180+2r2h2)+πd3d3/4
=3.14x103x9+3.14 (2x3.14x10.5x82+8x10.5x10.5)/4+3.14
(3.14x10.5x82x71.45/180-2x10.5x7.16)+3.14(3.14x11.5x40.3x71.45/180+
2x11.5x7.84)+3.14x40.3x40.3/4=14400.24
D=135.44 is calculated according to f=π rr=π dd/4, wherein d is sample blank diameter, r is sample blank radius.
Sample aperture is set as 9.
2nd, according to sample blank diameter d=135.44 and sample aperture 9 laser cutting machine (or wire cutting machine) blanking system
Make 4 blanks.
3rd, 4 sample finished products (part of extending) are made using mould die trial swaging of extending.Described mould of extending is according to described finished product
Size determine.
4th, measure sample finished product (part of extending) each size with cubing, the height dimension of sample finished product is surveyed as 7.1mm, forms
The height 3mm size of product, therefore, produces 4.1mm increment of altitude, and difference in height is 4.1mm；The aperture of actual measurement sample finished product is
12.4mm, aperture difference 0.6mm.
5th, set described preset value as 0.3mm, therefore, aperture difference and difference in height are more than described setting value, therefore, foundation
4.1mm difference in height and 0.6mm aperture difference correction specimen finish and sample aperture, according to revised size laser cutting machine
Blanking makes 4 blanks, then die trial again again, until be less than or equal to described default in described aperture difference and described difference in height
Value, the final blank diameter determining is d=φ 129.1, and aperture is d=φ 9.5.
6th, punch-die in pressure punching and blanking compound die, recessed is determined according to diameter d=129.1mm and aperture d=9.5mm
Mould, piercing punch Blade dimensions and stripper and scraping wings relative dimensions and revise its marker map, the punching that completes falls
Material compound die, standby.
8th, extended mould according to finished product G- Design, the pointing device design positioning blank in mould becomes adjustable and can (claim
Adjustable positioning device), manufacture mould of extending, standby.
9th, punching and blanking compound die is adopted to make the blank of diameter d=129.1mm according to described marker map, and simultaneously in hair
On base, punching is to form the through hole of aperture d=9.5mm；
10th, described blank is placed on mould of extending and is stamped and formed out described annular groove, to form described finished product.
In other embodiments, before the described design marker map according to the blank diameter determining, methods described is also wrapped
Include:
N specimen finish difference sample blank different with sample aperture is cut using cutting machine, described n be more than or equal to
2 integer；
By described n sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form n sample one-tenth
Product；
The relatively described n sample finished product aperture difference and described finished product between and diameter difference respectively, will with described finished product it
Between aperture difference and the minimum specimen finish of sample finished product corresponding sample blank of diameter difference and sample aperture be defined as described
The blank diameter determining and the aperture of described determination.
Above-mentioned cold stamping method is according to the blank diameter determining and the aperture design marker map of determination, multiple using punching and blanking
Matched moulds makes blank according to described marker map, and on blank, punching, to form described through hole, described blank is placed in and draws simultaneously
Stretch and described annular groove is stamped and formed out on mould, you can form described finished product, and deburring need not be carried out, solve or part solves
Need to increase a secondary trimming die in prior art, thus lead to converted products cost increase, and also need to that place places should
The technical problem of secondary trimming die.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent
Select embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (4)
1. a kind of cold stamping method, for making a finished product with diameter, described finished product center offers through hole, and described one-tenth
Annular groove is also had on product it is characterised in that described cold stamping method includes:
According to the blank diameter determining and the aperture design marker map of determination, described blank diameter and described aperture are according to described
The aperture of the diameter of finished product and described through hole determines；
Blank is made according to described marker map using punching and blanking compound die, and punching is described to be formed on described blank simultaneously
Through hole, the punch-die of described punching and blanking compound die, die, piercing punch Blade dimensions are by the blank diameter of described determination and institute
The aperture stating determination determines；
Described blank is placed on mould of extending and is stamped and formed out described annular groove, to form described finished product, described extend mould according to
The size of described finished product determines.
2. cold stamping method as claimed in claim 1 is it is characterised in that design discharge described according to the blank diameter determining
Before figure, methods described also includes:
Cut the sample blank in a specimen finish and sample aperture using cutting machine；
By described sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form a sample finished product；
The relatively aperture difference between described sample finished product and described finished product and difference in height；
When described aperture difference and described difference in height are more than a preset value, revise described specimen finish, remake sample finished product；
When described aperture difference and described difference in height are less than or equal to described preset value, by described specimen finish and described sample aperture
It is defined as the blank diameter of described determination and the aperture of described determination.
3. cold stamping method as claimed in claim 2 is it is characterised in that described specimen finish is equal to the two of described radius of specimen
Times, described radius of specimen is equal to the area of described finished product divided by π, then opens radical sign.
4. cold stamping method as claimed in claim 1 is it is characterised in that design discharge described according to the blank diameter determining
Before figure, methods described also includes:
The different sample blank different with sample aperture of n specimen finish is cut using cutting machine, described n is more than or equal to 2
Integer；
By described n sample blank be placed in described in extend and be stamped and formed out described annular groove on mould, to form n sample finished product；
The relatively described n sample finished product aperture difference and described finished product between and diameter difference respectively, between described finished product
The specimen finish of sample finished product corresponding sample blank of aperture difference and diameter difference minimum and sample aperture are defined as described determination
Blank diameter and described determination aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842947.7A CN104588490B (en) | 2014-12-30 | 2014-12-30 | Cold stamping method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842947.7A CN104588490B (en) | 2014-12-30 | 2014-12-30 | Cold stamping method |
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| CN104588490A CN104588490A (en) | 2015-05-06 |
| CN104588490B true CN104588490B (en) | 2017-01-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105081075A (en) * | 2015-09-01 | 2015-11-25 | 无锡贺邦金属制品有限公司 | Method for stamping finished products with diameters |
| CN109048218A (en) * | 2018-08-21 | 2018-12-21 | 内蒙古第机械集团股份有限公司 | The cold stamping method of armour steel revolution bodily form shell conical part |
| CN110434226B (en) * | 2019-08-13 | 2020-10-23 | 武汉市尚佳盛汽车配件有限公司 | Processing method and processing die for tail lamp bracket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60115334A (en) * | 1983-11-25 | 1985-06-21 | Toshiba Corp | Press forming die device |
| CN101537454B (en) * | 2009-04-09 | 2011-03-30 | 蚌埠市瑞泰汽配制造有限公司 | Technology for processing rotatable filter sealing ring fixed plate |
| CN101700549B (en) * | 2009-08-27 | 2013-01-09 | 四川宁江山川机械有限责任公司 | Molding process of spring plate of shock absorber and anti-drawing molding die |
| CN101695727A (en) * | 2009-10-27 | 2010-04-21 | 中国重汽集团济南动力有限公司 | Stamping technology for integral door frame of heavy truck |
| CN102284608B (en) * | 2011-08-30 | 2013-09-04 | 扬州捷迈锻压机械有限公司 | Spoke stamping formation process |
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Address after: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant after: CRRC YANGTZE CO., LTD. Address before: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant before: China South Locomotive & Rolling Stock Changjiang Vehicle Company |
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