CN1784278A - Molding method by forging and molding method for case - Google Patents

Molding method by forging and molding method for case Download PDF

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Publication number
CN1784278A
CN1784278A CN 200480001690 CN200480001690A CN1784278A CN 1784278 A CN1784278 A CN 1784278A CN 200480001690 CN200480001690 CN 200480001690 CN 200480001690 A CN200480001690 A CN 200480001690A CN 1784278 A CN1784278 A CN 1784278A
Authority
CN
China
Prior art keywords
hub
thickness
box
peripheral
internal protrusion
Prior art date
Application number
CN 200480001690
Other languages
Chinese (zh)
Inventor
田部井洋一
荒木隆
高野俊司
柳冈正一
三浦隆
Original Assignee
株式会社博世汽车系统
株式会社二之宫
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 株式会社博世汽车系统, 株式会社二之宫 filed Critical 株式会社博世汽车系统
Priority to PCT/JP2004/005443 priority Critical patent/WO2005099929A1/en
Publication of CN1784278A publication Critical patent/CN1784278A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00Making hollow articles not covered by a single preceding sub-group
    • B21K21/02Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/28Making machine elements wheels; discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/28Making machine elements wheels; discs
    • B21K1/30Making machine elements wheels; discs with gear-teeth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/76Making machine elements elements not mentioned in one of the preceding groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00Making hollow articles not covered by a single preceding sub-group

Abstract

A molding method by forging, wherein, a material manufactured by punching out a plate-like member is molded, in an upsetting step, in a first intermediate molded product by molding its peripheral edge part in an annular thin-walled part, molding the inside of the annular thin-walled part in a thick-walled part thicker in wall thickness than the annular thin-walled part, and forming a recessed part at the center part of the thick-walled part. A gear is manufactured by using the first intermediate molded product.

Description

Forging and molding method and container manufacturing process
Technical field
The present invention relates to a kind of forging and molding method and a kind of container manufacturing process.
Background technology
Owing to the cost reason, the numerous species of machine part etc. is all made by forging usually.In this case, usually, intermediate product need form and cover on the board core material material.For example, when making, be exactly this situation such as sprocket, gear, pulley, cam, chain link and fixed support or the like parts.
In addition, the cup-shaped box body of inside with boss all extensively used in many occasions.For example, being used for providing the box body of solenoid electric valve of the injection device of fuel to cylinder of internal combustion engine is exactly a kind of cup-shaped parts, is integrally formed the internal protrusion portion hub that is used for fixing solenoid and magnetic core.Also form by forging usually such as these cup-shaped box bodys with internal protrusion portion hub, this is for cost factor, and need form in the intermediate product form and to cover on the board core material material.
In the prior art, need form under these situations that cover on the board core material material by forging formation and intermediate product such as material, employed manufacture method all is that pressure forms the post material, and its center pillar material obtains by excision low-carbon (LC) round bar.
Japanese unexamined patent NO.2000-94088 discloses a kind of manufacturing process with cup of internal protrusion portion hub, and wherein this material is by carrying out spheroidizing and this material is sprayed the antirust processing of phosphate film obtaining to forging plate.Because this method comprises the step of excising round bar, so, can use the round bar of minor diameter to reduce the excision cost, and make this material form a kind of thick structure, to be suitable for forming cup with internal protrusion portion hub by the excision section that forges round bar.For finishing these tasks, also known a kind of by preparing and forge the method that plain plate forms the box body with internal protrusion portion hub.
Yet in above-mentioned these situations, wherein intermediate product forms by punching press post material, and the post material forms by excision low-carbon (LC) round bar, has the problem such as height excision cost, thereby makes end product relatively more expensive.
And, when forming cup-shaped box body with internal protrusion portion hub by the sheet material forging, this glass is that punching press forms by relatively stretching than the forward direction of light sheet, so, there is the not enough trend of volume size, this will make and be difficult to guarantee, when when forming than the edge wall thickness at the bottom of with cup, thus bottom enough thick formation internal protrusion portion hub.
One of purpose of the present invention is, a kind of forging and molding method and box body manufacturing process are provided, and it can overcome the problems referred to above of the prior art.
One of purpose of the present invention is to provide a kind of and be used for by made the manufacturing process of high-quality box body by sheet material.
Another object of the present invention is, a kind of box body manufacturing process is provided, and it can make high-quality box body with low cost.
Summary of the invention
The invention is characterized in that this forged material manufacturing process comprises, prepare the first step of sheet material, make peripheral part thickness of this material less than second step of core thickness.
Of the present invention another be characterised in that, this box body manufacturing process comprises, prepares the first step of sheet material, makes peripheral part thickness of this material less than second step of core thickness.
Of the present invention another is characterised in that, this manufacturing process with cup-shaped box body of internal protrusion portion hub comprises, prepare the step of sheet material, make peripheral part thickness of this material less than core thickness this thicker core of drawing step that is spill simultaneously, and use forward direction to stretch punching press to form the step that this intermediate product is cup-shaped parts, wherein this intermediate product forms by above-mentioned drawing, and the bottom of these cup-shaped parts is thicker than peripheral wall.
Description of drawings
Fig. 1 is the view that is used to illustrate the technical process of the box body with internal protrusion portion hub formed according to the present invention;
Fig. 2 is the view that is used to illustrate the technical process of the box body with internal protrusion portion hub formed according to the present invention;
Fig. 3 is the view that is used to illustrate the technical process of the box body with internal protrusion portion hub formed according to the present invention;
Fig. 4 is the view that is used to illustrate the technical process of the box body with internal protrusion portion hub formed according to the present invention;
Fig. 5 is the view that is used to illustrate the technical process of the box body with internal protrusion portion hub formed according to the present invention;
Fig. 6 illustrates the view that is used to make the technical process of gear when first intermediate product shown in Figure 2;
Fig. 7 illustrates the view that is used to make the technical process of gear when first intermediate product shown in Figure 2;
Fig. 8 illustrates the view that is used to make the technical process of gear when first intermediate product shown in Figure 2;
Fig. 9 illustrates the view that is used to make the technical process of pulley when first intermediate product shown in Figure 2;
Figure 10 illustrates the view that is used to make the technical process of pulley when first intermediate product shown in Figure 2;
Figure 11 illustrates the view that is used to make the technical process of pulley when first intermediate product shown in Figure 2.
The specific embodiment
Describe embodiments of the invention below with reference to accompanying drawings in detail.
Fig. 1 to 5 is technology stretching pressing methods, is used to illustrate the embodiment of method of the present invention, and this method is used to make the box body of solenoid electric valve that is used for providing the injection device of fuel to cylinder of internal combustion engine.
Sheet shape part at first, as shown in Figure 1 is prepared into material 1.Material 1 can be by for example making blank by low carbon steel plate and this steel plate of punching press obtains.Here, material 1 is a disc-shaped part, but it not necessarily must be a disc-shaped part.
Then, utilize upsetting to come to reduce the thickness of marginal portion, form a spill at core simultaneously, thereby form first intermediate product 2 as shown in Figure 2 than core.This intermediate product 2 shown in Figure 2 has the thin annular section 21 of a periphery, at the thickness portion 22 of these thin annular section 21 inside, this thickness portion is thicker than this thin annular section 21, and the concave portions 22A on the core of this thickness portion 22.
In processing step subsequently, thickness portion 22 is formed box body bottom and internal protrusion portion hub at least, thus it need be thickeied, with have at least can with the quantity of material of the integrally formed internal protrusion in bottom portion hub.Before step is below carried out, preferably first intermediate product 2 is annealed, in step subsequently, rupture preventing.
In stretching below and the pressing step, the shaping that is stamped of first intermediate product 2, form peripheral wall 31 thickness portion 22 formed bottom 32 and will approach annular section 21, this peripheral wall is the extension of 32 one from the bottom, thereby forms second intermediate product 3 shown in Figure 3.Because first intermediate product 2 heart therein has concave portions 22A, so second intermediate product 3 of Fig. 3 can easily obtain by stretching and flattening technology.In order around the peripheral wall edge of box body, to form external flanges, adopt stretching and flatten the external margin 31A that technology is thickeied peripheral wall 31 a little, make wall 31 become skirt shape shape.The thickness of peripheral wall 31 is less than the thickness of bottom 32.If external flanges does not need, then do not need to thicken external margin 31A.
In ensuing forward direction/back in stretching, wherein second intermediate product 3 adopts this forward direction/back to form the 3rd intermediate product 4 shown in Figure 4 after stretching, internal protrusion portion hub 43 is formed on the inside of bottom 42, outer projection portion hub 44 is formed on the outside of bottom 42, and external flanges 41A is formed on the edge of peripheral wall 41.Under the situation that does not need outer projection portion hub 44, only need to adopt the forward direction drawing process.
In the step below, adopt two punch dies to come punching press the 3rd intermediate product 4, make it form required net shape, to obtain end product box body 5 as shown in Figure 5, it has internal protrusion portion hub.In the box body 5 that forms like this, the thickness of bottom 52 and peripheral wall 51 is roughly the same, and internal protrusion portion hub 53 and outer projection portion hub 54 on the bottom 52 are coaxial.Form internal protrusion portion hub 53 and be for o can be installed thereon, forming outer projection portion hub 54 is in order to hold bearing thereon.External flanges 51A on the external margin of peripheral wall 51 extends to peripheral wall 51 in suitable angle one.
When the step formation according to Fig. 1 to 5 has the box body of internal protrusion portion hub, sheet material is to form internal protrusion portion's hub and/or outer projection portion hub in the bottom owing to can stretch, so, than prior art, wherein in the prior art, form box body from the excision section of circle bar, can low cost produce high-quality product with internal protrusion portion hub.In addition, in the variations of example shown in Figure 5, can also only form an internal protrusion portion hub.Particularly, adopt identical capacity to form only internal protrusion portion hub,, can form this internal protrusion portion hub higher than the situation that forms inside and outside two boss.
When reference one embodiment of the present of invention were carried out above-mentioned explanation, first intermediate product 2 shown in Figure 2 was parts of general purpose.First intermediate product 2 can be as for example intermediate product of sprocket, gear, pulley, cam, chain link and fixed support etc.
Illustrate that now with reference to Fig. 6-8 first intermediate product 2 that utilizes Fig. 2 makes the step of gear.At first, prepare first intermediate product 2, and make its experience forward direction/back forge step to stretching, thereby the thick core of first intermediate product 2 forms boss 61, and thin part forms thin annular section 62, it has homogeneous thickness.Here, boss 61 is cup-shaped, forms the cylindricality with bottom.
Intermediate product among Fig. 6 is stamped, and removing the bottom 61A of boss 61, thereby forms cylindrical projection portion hub 63 shown in Figure 7.
Then, the periphery of thin annular section 62 is formed a plurality of tooth 62A by deburring and base, thereby obtains to have the gear 6 (Fig. 8) of boss 63.
Adopt first intermediate product 2 of Fig. 2 to make the step of pulley now with reference to Fig. 9-11 explanation.At first, prepare first intermediate product 2,, approach peripheral edge thickness partly to increase, thereby form external rings shown in Figure 9 71 its punching press.
After forming external rings 71, adopt forward direction/back to forge step, thereby make thick core form boss 72 to stretching, and feasible thin annular section 73 with uniform thickness form externally encircle 71 and boss 72 between (Figure 10).Here, boss 72 is cup-shaped, forms the cylindricality with bottom, and external rings 71 forms and has external rings 74 required diameter sizes.
Then, the bottom 72A of boss 72 punching that is stamped, thus be removed, form column-shaped projection portion hub 75 shown in Figure 11.
According to above-mentioned steps, obtain a pulley 7, it comprises boss 75 and external rings 74, integral body is formed with the thin annular section 73 of uniform thickness.For final product is used, can externally encircle by machined into or the like and form a groove on 74.
Commercial Application
As mentioned above, can be used for low according to forging forming method of the present invention and box body manufacturing process Cost is made such as parts such as sprocket, gear, pulley, cam, chain link and fixed supports, And can be used for the cup-shaped box body that low cost, high-quality manufacturing have internal protrusion section hub.

Claims (17)

1. a forged material manufacturing process is characterized in that, this method comprises:
Prepare the first step of sheet material, and
Make peripheral part thickness of this material less than second step of core thickness.
2. the method for claim 1, wherein first step is the step of base system metallic plate.
3. the method for claim 1, wherein second step is the step that goes out spill simultaneously in the core drawing of this material.
4. as claim 1 or 3 described methods, wherein second step is forged by pier and is realized.
5. a box body manufacturing process is characterized in that, comprising:
Prepare the first step of sheet material, and
Make peripheral part thickness of this material less than second step of core thickness.
6. method as claimed in claim 5, wherein first step is the step of base system metallic plate.
7. method as claimed in claim 5, wherein second step is the step that goes out spill simultaneously in the core drawing of this material.
8. method as claimed in claim 5, wherein second step is the forging and molding step.
9. method as claimed in claim 5, wherein second step is forged by pier and is realized.
10. method as claimed in claim 5 also comprises third step, that is, the intermediate product that obtains by second step is stretched with peripheral wall and the bottom that forms box body simultaneously by forward direction.
11. method as claimed in claim 10, wherein, if a is the thickness of peripheral wall and b is the thickness of bottom, a<b then.
12. method as claimed in claim 5 is wherein stretched to form the box body peripheral wall by forward direction by the intermediate product that second step obtains, and forms internal protrusion portion hub then.
13. method as claimed in claim 5, wherein the intermediate product that obtains by second step is stretched to form box body peripheral wall and internal protrusion portion hub simultaneously by forward direction.
14. method as claimed in claim 5, wherein the intermediate product that obtains by second step is annealed before the subsequent step carrying out.
15. method as claimed in claim 7, wherein second step is the forging and molding step.
16. method as claimed in claim 7, wherein second step is forged by pier and is realized.
17. the manufacturing process with cup-shaped box body of internal protrusion portion hub is characterized in that, comprising:
Prepare the step of sheet material,
Make this material peripheral part thickness less than core thickness simultaneously in the core of this material drawing go out the step of spill, and
The intermediate product that forward direction stretches and obtains by drawing is to form the cup-shaped box body that the bottom is thicker than peripheral wall.
CN 200480001690 2004-04-16 2004-04-16 Molding method by forging and molding method for case CN1784278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/005443 WO2005099929A1 (en) 2004-04-16 2004-04-16 Molding method by forging and molding method for case

Publications (1)

Publication Number Publication Date
CN1784278A true CN1784278A (en) 2006-06-07

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US (1) US20070006628A1 (en)
EP (1) EP1736255B1 (en)
JP (1) JPWO2005099929A1 (en)
CN (1) CN1784278A (en)
DE (1) DE602004030279D1 (en)
WO (1) WO2005099929A1 (en)

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CN102554084A (en) * 2010-12-10 2012-07-11 上海重型机器厂有限公司 Forging method for water chamber head of steam generator of third-generation nuclear power station
CN103386585A (en) * 2012-05-10 2013-11-13 昆山永年先进制造技术有限公司 Shell platform or tube platform forming technology and backward extruding die used by same
CN107695276A (en) * 2017-11-08 2018-02-16 浙江申吉钛业股份有限公司 The new manufacturing process of spherical flange core axial workpiece and mould

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JP5383362B2 (en) * 2009-07-24 2014-01-08 キヤノン株式会社 Method for manufacturing metal member
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CN103153716B (en) 2010-10-06 2016-01-13 日本化药株式会社 The manufacture method of gas generator, gas generator retainer and gas generator retainer
US8643452B2 (en) * 2011-04-07 2014-02-04 Indimet Inc. Solenoid housing with elongated center pole
CN102554114A (en) * 2012-01-06 2012-07-11 山东伊莱特重工有限公司 Ring forging and rolling processing method of bearing ring parts used for large-scale wind turbine unit
CN103143628A (en) * 2013-03-04 2013-06-12 江苏泽恩汽机车部品制造有限公司 Step-by-step thick wall stretching and forming die
CN104107871B (en) * 2013-04-19 2016-04-27 宝钢特钢有限公司 Throw with upsetting and rotate in conjunction with flat anvil the method that forging limit mode forges large-scale cake part
DE102013011951A1 (en) * 2013-07-18 2015-01-22 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Process for the manufacture of motor vehicle body parts
KR101929643B1 (en) 2014-03-28 2018-12-14 신닛테츠스미킨 카부시키카이샤 Method for manufacturing sheet-shaped formed component having multiple sections of increased thickness, and sheet-shaped formed component having multiple sections of increased thickness
CN105728607A (en) * 2016-04-19 2016-07-06 贵州航天新力铸锻有限责任公司 Billet for forming large-sized double-lug U-shaped forged piece

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CN102554084A (en) * 2010-12-10 2012-07-11 上海重型机器厂有限公司 Forging method for water chamber head of steam generator of third-generation nuclear power station
CN103386585A (en) * 2012-05-10 2013-11-13 昆山永年先进制造技术有限公司 Shell platform or tube platform forming technology and backward extruding die used by same
CN103386585B (en) * 2012-05-10 2016-01-20 昆山永年先进制造技术有限公司 Shell platform or pipe platform forming technology and backward extruding die used thereof
CN107695276A (en) * 2017-11-08 2018-02-16 浙江申吉钛业股份有限公司 The new manufacturing process of spherical flange core axial workpiece and mould

Also Published As

Publication number Publication date
EP1736255A1 (en) 2006-12-27
EP1736255B1 (en) 2010-11-24
EP1736255A8 (en) 2007-06-20
US20070006628A1 (en) 2007-01-11
JPWO2005099929A1 (en) 2007-08-16
WO2005099929A8 (en) 2007-04-12
EP1736255A4 (en) 2007-05-02
WO2005099929A1 (en) 2005-10-27
DE602004030279D1 (en) 2011-01-05

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Open date: 20060607