EP2790850A1 - Verfahren zum umformen von schmiedeteilen - Google Patents
Verfahren zum umformen von schmiedeteilenInfo
- Publication number
- EP2790850A1 EP2790850A1 EP12812572.1A EP12812572A EP2790850A1 EP 2790850 A1 EP2790850 A1 EP 2790850A1 EP 12812572 A EP12812572 A EP 12812572A EP 2790850 A1 EP2790850 A1 EP 2790850A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forging
- forming
- die
- forged
- contour
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005242 forging Methods 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000009966 trimming Methods 0.000 claims description 5
- 239000000047 product Substances 0.000 description 6
- 238000007373 indentation Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010002 mechanical finishing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/008—Incremental forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/02—Special design or construction
- B21J9/027—Special design or construction with punches moving along auxiliary lateral directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
Definitions
- the present invention relates to a method for forming forgings, in particular for the formation of so-called secondary features on the forgings.
- forgings are, for example, knuckles of commercial vehicles.
- Transport and commercial vehicles ie, for example, cars, trucks, construction vehicles, trains
- forged components with complex geometries are used.
- the demands on the precision of the components have increased.
- forgings such as the aforementioned stub axles for commercial vehicles
- a blank is first produced in the current state of the art by forging, which is then re-machined mechanically after the trimming, that is machined to imitate desired features such as Lagerauf with form the required precision and thus arrive at the finished product.
- the machining times on the forged part are lengthened by this mechanical reworking, and on the other hand, due to the material removal by the cutting edge
- Manufacturing accuracy reduces the operating weight of the component and the total weight reduced, and thereby
- the method comprises
- Forging in a die wherein during forming one or more tools are introduced into the forging and thereby the material of the forging is displaced so that the predetermined final contour is achieved.
- Pre-forging prefers a semi-finished or almost finished
- the Vorschmieden can consist of one, but also of two or more forging steps, by means of which the forging of the final contour is approximated.
- Material displacement also optimally fills the die "from the inside", resulting in substantially less rejects due to incomplete die filling.
- providing the additional step of forming, compared to the prior art, has advantages both in terms of
- Another advantage is that is displaced by the forming and in particular the insertion of the / the tool material and thus the fiber flow of the material is held parallel to the surfaces (the final contour). This will make the finished
- a mandrel or hollow mandrel By using a mandrel or hollow mandrel high forming forces can be applied, which leads to an efficient
- a hollow mandrel also allows a particularly precise shaping of the forged part at the insertion point and can thus be used particularly effectively for determining the final contour.
- secondary molding elements of the finished forging are formed by the tool (s).
- Forged part surface which forging technology is difficult or impossible to produce by dies (mutually moving die halves), for example, the shots for bearings on truck stub axles.
- dies mutually moving die halves
- the forming is carried out substantially at the temperature of the previous step of pre-forging.
- Mold cavity preferably defines the outer contour of the predetermined final contour, in other words, the die determines the position of the substantially outwardly facing surfaces of the finished forging, while through the tools (for example
- FIG. 1 schematically shows a production method according to the prior art using the example of a steering knuckle
- FIG. 2 shows schematically an example of the method according to the invention for the production of forgings with a
- FIG. 3 shows a comparison of a conventionally produced steering knuckle and one according to the invention
- FIG. 4 shows a perspective view of a lower perspective view
- FIG. 5 shows a radial section through a steering knuckle produced according to the invention, wherein the illustration of FIG
- FIG. 1 schematically shows the sequence of a
- a blank 10 made of steel is first upset, pre-pressed and subjected to a first Vorschmiede Colour
- Forging material is removed so that the forged finished product 10 '' is obtained.
- the finished forged part 10 '' still mechanical, that is machined must be reworked. That at the
- FIG. 2 shows the sequence of an exemplary method for comparison with the conventional method of FIG.
- a blank 20 is first compressed, pre-pressed and forged in two steps ( Figure 2a to d) in order to
- Substantially at forging temperature carried out a deformation of the forging in a die, the mold cavity, the outer contour of the predetermined final contour of the component
- FIG. 3 shows a perspective and sectional view of a comparison between the completely forged and trimmed components. As can be seen in FIG. 3a, this is completed by the conventional method
- the truck steering knuckle according to the invention already has the
- the weight of the finished forged blank which is 29kg, is correspondingly lower. It can not only save about 10% of material but also significantly shorter process times can be achieved.
- the material flows into the initially free mold spaces on the inner surfaces of the dies until the die mold has been filled.
- slightly more material is preferably present in the die at the beginning of the forming, as is required in terms of volume for the final forging.
- the savings in raw material achieved by the method according to the invention can be seen particularly well from the sectional drawing of FIG.
- the reference numeral 22 designates the forged contour produced after the second pre-forging (FIG. 2d), while the reference numeral 23 denotes the final contour after
- Forming process according to the invention that is called after the introduction of the hollow mandrels.
- the volume fraction of the introduced hollow mandrel fills the die starting from the forged smaller forging contour 22 up to the predetermined final contour 23.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011088862A DE102011088862A1 (de) | 2011-12-16 | 2011-12-16 | Verfahren zum Umformen von Schmiedeteilen |
PCT/EP2012/075757 WO2013087924A1 (de) | 2011-12-16 | 2012-12-17 | Verfahren zum umformen von schmiedeteilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2790850A1 true EP2790850A1 (de) | 2014-10-22 |
EP2790850B1 EP2790850B1 (de) | 2016-06-01 |
Family
ID=47520923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12812572.1A Active EP2790850B1 (de) | 2011-12-16 | 2012-12-17 | Verfahren zur herstellung eines achsschenkels |
Country Status (9)
Country | Link |
---|---|
US (1) | US9375778B2 (de) |
EP (1) | EP2790850B1 (de) |
JP (1) | JP6087372B2 (de) |
KR (1) | KR102031596B1 (de) |
BR (1) | BR112014014742B1 (de) |
CA (1) | CA2859332C (de) |
DE (1) | DE102011088862A1 (de) |
MX (1) | MX344480B (de) |
WO (1) | WO2013087924A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104607544B (zh) * | 2015-01-16 | 2016-06-22 | 芜湖三联锻造有限公司 | 一种长轴类转向节新型校正模具 |
CN107792173A (zh) * | 2017-09-27 | 2018-03-13 | 湖北三环锻造有限公司 | 与拉杆臂一体化成形的汽车转向节 |
CN108044019A (zh) * | 2017-11-30 | 2018-05-18 | 枣庄远东实业开发总公司 | 一种基于空气锤预坯的汽车转向节立式锻造装置及工艺 |
CN109622845B (zh) * | 2019-02-18 | 2021-07-13 | 湖北三环锻造有限公司 | 一种鼓式转向节预锻件闭式近净成形工艺及模具 |
CN112756530B (zh) * | 2020-12-25 | 2022-07-22 | 章丘市普锐锻压有限公司 | 一种锻压工艺及锻压生产线 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4361360A (en) * | 1979-03-05 | 1982-11-30 | Siegfried Kuether | Tube end forging process |
US4321818A (en) * | 1979-10-03 | 1982-03-30 | Kawaski Yukon Kabushiki Kaisha | Closed forging press |
JPS605949Y2 (ja) * | 1980-08-08 | 1985-02-25 | トヨタ自動車株式会社 | 鍛造製品バリ取り仕上装置 |
JPS5853150Y2 (ja) * | 1980-11-14 | 1983-12-03 | トヨタ自動車株式会社 | 鍛造品のためのバリ取り用プレス型 |
JPS6277143A (ja) * | 1985-09-30 | 1987-04-09 | Nissan Motor Co Ltd | 鍛造方法 |
JPH07100210B2 (ja) * | 1986-10-03 | 1995-11-01 | トピ−工業株式会社 | 履帯連結用リンクの製造方法 |
DE3701703A1 (de) * | 1987-01-22 | 1988-08-18 | Doege Eckart | Verfahren und vorrichtung zur herstellung von kegelraedern |
US4910990A (en) * | 1987-06-18 | 1990-03-27 | Delio Ralph D | Apparatus for making substantially forged articles such as tank tread connectors |
JP3239345B2 (ja) * | 1993-03-25 | 2001-12-17 | 東芝ホームテクノ株式会社 | 炊飯器 |
JPH07124680A (ja) * | 1993-10-31 | 1995-05-16 | Riken Tanzou Kk | 鍛造部品及びその製造方法 |
US5544413A (en) * | 1994-06-10 | 1996-08-13 | Omni Forge, Inc. | Method and apparatus for manfacturing a flashless metal connecting rod |
US5516130A (en) * | 1994-12-22 | 1996-05-14 | Interstate Forging Industries Inc. | Forged control arm |
AR001266A1 (es) * | 1995-03-21 | 1997-09-24 | Eaton Corp | Conjunto de rotula de dirección y freno para camiones de trafico pesado o mediano |
US6427326B1 (en) * | 1999-06-17 | 2002-08-06 | Honda Giken Kogyo Kabushiki Kaisha | Method of manufacturing connecting rod |
JP3777942B2 (ja) * | 2000-03-15 | 2006-05-24 | 株式会社豊田自動織機 | 圧縮機用中空ピストンの製造方法 |
-
2011
- 2011-12-16 DE DE102011088862A patent/DE102011088862A1/de not_active Ceased
-
2012
- 2012-12-17 WO PCT/EP2012/075757 patent/WO2013087924A1/de active Application Filing
- 2012-12-17 JP JP2014546565A patent/JP6087372B2/ja active Active
- 2012-12-17 KR KR1020147019436A patent/KR102031596B1/ko active IP Right Grant
- 2012-12-17 EP EP12812572.1A patent/EP2790850B1/de active Active
- 2012-12-17 MX MX2014007088A patent/MX344480B/es active IP Right Grant
- 2012-12-17 BR BR112014014742-6A patent/BR112014014742B1/pt not_active IP Right Cessation
- 2012-12-17 CA CA2859332A patent/CA2859332C/en active Active
- 2012-12-17 US US14/365,130 patent/US9375778B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013087924A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2015500744A (ja) | 2015-01-08 |
EP2790850B1 (de) | 2016-06-01 |
DE102011088862A1 (de) | 2013-06-20 |
MX344480B (es) | 2016-12-16 |
KR102031596B1 (ko) | 2019-11-08 |
BR112014014742B1 (pt) | 2020-10-13 |
WO2013087924A1 (de) | 2013-06-20 |
JP6087372B2 (ja) | 2017-03-01 |
US20150013408A1 (en) | 2015-01-15 |
CA2859332C (en) | 2020-01-21 |
CA2859332A1 (en) | 2013-06-20 |
MX2014007088A (es) | 2014-08-01 |
KR20140103154A (ko) | 2014-08-25 |
US9375778B2 (en) | 2016-06-28 |
BR112014014742A2 (pt) | 2017-06-13 |
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