EP2763805A1 - Schmiedevorrichtung zur herstellung eines kolbenrohlings und verfahren zur herstellung des kolbenrohlings unter verwendung der schmiedevorrichtung - Google Patents
Schmiedevorrichtung zur herstellung eines kolbenrohlings und verfahren zur herstellung des kolbenrohlings unter verwendung der schmiedevorrichtungInfo
- Publication number
- EP2763805A1 EP2763805A1 EP12791078.4A EP12791078A EP2763805A1 EP 2763805 A1 EP2763805 A1 EP 2763805A1 EP 12791078 A EP12791078 A EP 12791078A EP 2763805 A1 EP2763805 A1 EP 2763805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- forging
- piston
- piston blank
- forging device
- recess
- 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
Classifications
-
- 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
- B21K1/18—Making machine elements pistons or plungers
-
- 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
- B21J13/02—Dies or mountings therefor
-
- 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
- B21J13/02—Dies or mountings therefor
- B21J13/025—Dies with parts moving along auxiliary lateral directions
-
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/18—Making machine elements pistons or plungers
- B21K1/185—Making machine elements pistons or plungers with cooling channels
Definitions
- the invention relates to a forging apparatus for producing a piston blank, which has a piston crown and shaft elements attached to the piston crown, which are connected to each other via box walls, with a forging shape having a substantially cylindrical and the radially outer surface of the piston blank corresponding through recess, with a the one Side of the recess bounding forging, and with a center punch, which consists of a mandrel with a tapered approach attached thereto with a corresponding shape of the inner surface of the piston blank, and on the other side of the recess with the approach ahead in the forging is insertable ,
- the invention further relates to a method for forging a piston blank, which has a piston head, and shaft elements attached to the piston head, which are connected to each other via box walls with the following method steps:
- a forging apparatus for producing a piston blank and a method for forging the piston blank using the forging apparatus of the aforementioned type are known from Japanese Patent Application JP 2000 005840 A.
- the disadvantage here is that the forging consists of two halves, which are pulled apart after completion of the forging process in the radial direction to eject the piston blank can.
- Object of the present invention is to make a forging device such that in the top of the upsetting radially outside the box walls, a circumferential cooling bag is formed. It is another object of the invention to provide a method for forging the piston blank using the forging, in which in the top of the upsetting radially outside the box walls, a circumferential cooling bag is formed.
- the forging shape for forming the radially outer surfaces of the box walls and for forming a radially outside of the box walls arranged in the piston head circulating cooling bag has two side jaws, which in the forging device obliquely to the longitudinal axis of the forging in obliquely lying arrows are movably mounted, wherein the oblique arrows with the longitudinal axis of the forging include an acute angle.
- Fig. 1 parts of a forging in the starting position with a
- Fig. 6 is a section through the produced in the forging apparatus
- Fig. 1 shows a forging apparatus 1 for press forging, which has a Gesenkmantel 2, which is slidably connected in the direction of the longitudinal axis 3 with a die plate 4.
- the Gesenkmantel 2 has a round opening 6, in which a Gesenkbuchse 7 is arranged, the function of which is a
- the forging base 8 located in the interior of the die sleeve 7 rests on a die plate 4.
- a Stauchling 9 from which the piston blank 28 (Fig. 6) is made.
- the Stauchling 9 consists of AISi12CuMgNi or AISi12Cu3Ni2Mg and has a temperature of 480 ° C.
- the other parts of the forging apparatus 1, namely side jaws 10 and 11 and hold-down 12 and 13, are mounted next to the center punch 14 on a hydraulic device, not shown in Fig. 1. While the hold-down 12, 13 and the center punch 14 are movably mounted in the direction of parallel to the longitudinal axis 3 of the forging device 1 arrow 15, the side jaws 10 and 11 are movably mounted in the direction of the oblique arrows 16 and 17, wherein the oblique arrows 16 and 17 with the longitudinal axis 3 an angle ⁇ 20 ° and converge toward each other in the direction of the lower die 5.
- the side jaws 10, 11 and the center punch 14 in this case form the upper die 18, which is formed in three parts in the present embodiment.
- the side jaws 10, 11, the hold-down 12, 13 and the center punch 14 are arranged symmetrically to the longitudinal axis 3 of the forging apparatus 1.
- the hold-downs 12 and 13 are moved in the direction of the arrow 15 down to the side jaws 10 and 11 ( Figure 2) until they rest on the side jaws 10 and 11 as shown in Figure 3.
- the Gesenkmantel 2 is then moved together with the side jaws 10 and 11 and the downholders 12 and 13 in the direction of parallel to the longitudinal axis 3 of the forging device 1 arrow 19 (FIG. 2) on the die plate 4 to the Gesenkmantel 2 on the die plate 4 rests, as shown in Fig. 3.
- a circumferential cooling pocket 20 is formed by the side jaws 10 and 11 in the Stauchling 9, which is clearly visible in Fig. 6.
- the central punch 14 is moved towards the forging device 1 in the direction of the arrow 15 (FIG. 3), wherein the spike 21 moves into the opening 22 between the side jaws 10 and 11 and, as shown in FIG.
- the upsetting member 9 acts, in this case the shaft members 23 and the box walls 27, 27 'are formed between the mandrel 21 of the center punch 14 and the side jaws 10, 11 (FIG. 6).
- the mandrel 21 has a conically downwardly tapering projection 24 which, together with the inner walls 25, 26 of the side cheeks 10, 11 tapering conically downward, ensure that, as shown in FIG. 6, the box walls 27, 27 'of the piston blank 28 are inclined and taper towards the piston head 29 of the piston blank 28.
- the outer surface of the piston blank 28 is formed by a forging mold consisting of the side jaws 10, 11 and the die sleeve 7.
- the radially outer, cylindrical lateral surface 30 of the piston crown 29 is in this case formed by the die sleeve 7, while for the formation of the radially outer surfaces of the box walls 27, 27 'and the circulating cooling bag 20, the side jaws 10, 11 are responsible.
- the piston blank 28 produced in the context of the forging process described above is shown in aluminum.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011115048A DE102011115048A1 (de) | 2011-10-07 | 2011-10-07 | Schmiedevorrichtung zur Herstellung eines Kolbenrohlings und Verfahren zur Herstellung des Kolbenrohlings unter Verwendung der Schmiedevorrichtung |
| PCT/DE2012/000969 WO2013050020A1 (de) | 2011-10-07 | 2012-10-05 | Schmiedevorrichtung zur herstellung eines kolbenrohlings und verfahren zur herstellung des kolbenrohlings unter verwendung der schmiedevorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2763805A1 true EP2763805A1 (de) | 2014-08-13 |
| EP2763805B1 EP2763805B1 (de) | 2016-03-02 |
Family
ID=47225854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12791078.4A Active EP2763805B1 (de) | 2011-10-07 | 2012-10-05 | Schmiedevorrichtung zur herstellung eines kolbenrohlings und verfahren zur herstellung des kolbenrohlings unter verwendung der schmiedevorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9782823B2 (de) |
| EP (1) | EP2763805B1 (de) |
| JP (1) | JP5976118B2 (de) |
| CN (1) | CN104039475B (de) |
| DE (1) | DE102011115048A1 (de) |
| WO (1) | WO2013050020A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10253722B2 (en) * | 2015-05-01 | 2019-04-09 | Ks Kolbenschmidt Us, Inc. | Methods for forging a piston blank |
| DE102017101131A1 (de) * | 2016-01-22 | 2017-07-27 | Ks Kolbenschmidt Gmbh | Kolben mit drei Ringnuten und einer weiteren Nut aufweisend eine Trennfuge |
| US11566581B2 (en) | 2017-11-14 | 2023-01-31 | Ks Kolbenschmidt Gmbh | Steel piston with optimized design |
| DE102018207874B4 (de) * | 2018-05-18 | 2023-10-26 | Federal-Mogul Nürnberg GmbH | Verfahren zum multidirektionalen Schmieden eines Kolbens |
| CN112222342B (zh) * | 2020-09-11 | 2022-07-01 | 郑州机械研究所有限公司 | 一种钢制柴油机活塞热挤压成形装置及工艺 |
| CN117340191A (zh) * | 2023-06-19 | 2024-01-05 | 安徽海立汽车零部件有限公司 | 一种高压活塞的锻造模具及工艺 |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH90356A (fr) * | 1920-08-10 | 1921-09-01 | Usines Thecla S A | Dispositif pour la frappe à chaud des métaux. |
| US1766098A (en) * | 1927-05-02 | 1930-06-24 | Kelsey Hayes Wheel Corp | Apparatus for forming cup-shaped members |
| JPS63119944A (ja) * | 1986-11-10 | 1988-05-24 | Honda Motor Co Ltd | ピストンの鍛造方法 |
| JPH0673711B2 (ja) * | 1986-11-10 | 1994-09-21 | 本田技研工業株式会社 | ピストン鍛造用金型 |
| FR2628998B1 (fr) * | 1988-03-23 | 1990-12-28 | Glaenzer Spicer Sa | Procede pour fabriquer un organe a tourillons rainures, et procede et outil de formage pour rainurer ceux-ci |
| US5178686A (en) * | 1988-12-20 | 1993-01-12 | Metallgesellschaft Aktiengesellschaft | Lightweight cast material |
| WO1993017814A1 (de) * | 1992-03-13 | 1993-09-16 | Wera Werk Hermann Werner Gmbh & Co. | Verfahren und vorrichtung zur herstellung von insbesondere als bits gestalteten schraubwerkzeugen in kreuzschlitzform oder dergleichen |
| AUPM302693A0 (en) * | 1993-12-16 | 1994-01-20 | A.E. Bishop & Associates Pty Limited | Apparatus for manufacturing steering rack bars |
| JP3369009B2 (ja) * | 1994-10-07 | 2003-01-20 | ヤマハ発動機株式会社 | ピストンの鍛造方法 |
| DE19643778C2 (de) * | 1996-10-23 | 2000-04-13 | Alcan Gmbh | Leichtbaukolben |
| JP2000005840A (ja) | 1998-06-24 | 2000-01-11 | Yamaha Motor Co Ltd | 鍛造ピストンおよびその製造方法 |
| JP3942129B2 (ja) * | 1998-07-09 | 2007-07-11 | ヤマハ発動機株式会社 | 鍛造ピストンの製造方法および鍛造用金型 |
| 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 |
| DE10113629A1 (de) * | 2001-03-21 | 2002-10-02 | Thyssen Krupp Automotive Ag | Verfahren zur Herstellung von Kolben- bzw. Kolbenbauteilen sowie Schmiedewerkzeug |
| JP2004256873A (ja) * | 2003-02-26 | 2004-09-16 | Nippon Light Metal Co Ltd | 高温強度に優れた鋳物用アルミニウム合金 |
| DE102004057559A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
| DE102005042857A1 (de) * | 2005-09-08 | 2007-03-22 | Ks Kolbenschmidt Gmbh | Kolben für eine Brennkraftmaschine |
| WO2007032434A1 (ja) * | 2005-09-16 | 2007-03-22 | Honda Motor Co., Ltd. | アンダカット部を有する成形品の製造方法及びその鍛造成形装置並びに中間成形体 |
| JP4886541B2 (ja) * | 2007-02-08 | 2012-02-29 | 本田技研工業株式会社 | アンダカット部を有する成形品の鍛造成形方法及び装置 |
| DE102007031581A1 (de) * | 2007-07-06 | 2009-01-08 | Ks Kolbenschmidt Gmbh | Kolben einer Brennkraftmaschine mit einer erhöhten Schrägstellung der Kastenwände des Kolbens |
| CN201098720Y (zh) * | 2007-09-18 | 2008-08-13 | 徐国兴 | 汽车铝合金轮毂的锻造模具 |
| US8161934B2 (en) * | 2008-11-05 | 2012-04-24 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
| US8601996B2 (en) * | 2009-05-08 | 2013-12-10 | Caterpillar Inc. | Single piece piston body for an internal combustion engine |
-
2011
- 2011-10-07 DE DE102011115048A patent/DE102011115048A1/de not_active Withdrawn
-
2012
- 2012-10-05 EP EP12791078.4A patent/EP2763805B1/de active Active
- 2012-10-05 JP JP2014533766A patent/JP5976118B2/ja not_active Expired - Fee Related
- 2012-10-05 US US14/349,758 patent/US9782823B2/en active Active
- 2012-10-05 WO PCT/DE2012/000969 patent/WO2013050020A1/de not_active Ceased
- 2012-10-05 CN CN201280054488.5A patent/CN104039475B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013050020A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011115048A1 (de) | 2013-04-11 |
| WO2013050020A1 (de) | 2013-04-11 |
| US20150020566A1 (en) | 2015-01-22 |
| EP2763805B1 (de) | 2016-03-02 |
| JP5976118B2 (ja) | 2016-08-23 |
| US9782823B2 (en) | 2017-10-10 |
| CN104039475B (zh) | 2016-03-30 |
| CN104039475A (zh) | 2014-09-10 |
| JP2014528357A (ja) | 2014-10-27 |
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