WO2016059229A1 - Verfahren zur hestellung eines kolbens - Google Patents
Verfahren zur hestellung eines kolbens Download PDFInfo
- Publication number
- WO2016059229A1 WO2016059229A1 PCT/EP2015/074048 EP2015074048W WO2016059229A1 WO 2016059229 A1 WO2016059229 A1 WO 2016059229A1 EP 2015074048 W EP2015074048 W EP 2015074048W WO 2016059229 A1 WO2016059229 A1 WO 2016059229A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- piston blank
- area
- blank
- clamping
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- 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
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
Definitions
- the invention relates to a method for producing a piston and a piston produced thereafter according to the features of the respective preamble of the independent claims.
- piston blanks are manufactured for the production of pistons. These are usually produced by forging, casting or similar processes. After the piston has been made blank and the further processing, in particular a fine machining, to be subjected, it is necessary to fix this piston in a processing machine in its position so that this machine can take further processing. In particular, when the piston blank is clamped in the machine, it can disadvantageously come to a deformation by acting on the piston blank clamping pressures.
- the invention is therefore based on the object of specifying a production method for a piston with which the disadvantages described above are avoided.
- a corresponding piston blank should be specified.
- the piston blank is provided during and / or after production with a region having a circumferential surface with at least two distinct corners and / or curves for clamping the Koibenrohiings for subsequent processing.
- the Koibenrohling is produced depending on its intended use in a suitable process, such as a forging process, a casting process or other suitable methods for the production of piston blanks.
- Such piston blanks are not yet ready for use and must be clamped in a corresponding machine for further processing, in particular for finishing in the range of the outer diameter, or other processing.
- the piston blank is provided in those areas with which it is clamped in the processing machine for further processing, ie fixed in position, with a region having a circumferential surface with at least two distinct corners and / or curves , If the piston blank is produced in a casting or forging process, it is conceivable to introduce this region for later clamping of the piston blank in the processing machine with production of the piston blank.
- the mold for the piston blank may have corresponding geometries. The same applies to a forging method and other methods for producing a piston blank.
- the region with the circumferential surface partially with the production of the piston blank and additionally provide a sub-area in addition to the sub-area in the Koibenrohling, resulting in an overall area for clamping the piston blank for further processing.
- This has, for example, the advantage in the event that the additional clamping area can be reused by temporarily releasably attached to the Koibenrohling is attached. Only the area in the cooktop blank remaining there does not require further processing or partial processing or complete processing to remove this clamping area.
- the at least two distinct corners are introduced as a polygon in the piston blank.
- Such a polygon is, for example, a triangle, a square, a rectangle, a pentagon or a polygon with more than five corners.
- the clamping tool of the processing machine in which the piston blank is clamped over the region with the circumferential surface, is formed corresponding and adapted to releasably receive the piston blank with this additional clamping region.
- the best possible clamping range can be selected not only as a function of the clamping tool of the machine tool, but also of the actual machining operation, so that this machining operation can be performed optimally.
- those shapes can be selected which are suitable, after clamping and machining of the piston blank, to remain either partially or completely on this piston blank and thus on the later finished and thus ready-to-use piston.
- the possibilities are provided that the region with the circumferential surface after the finishing of the piston blank is either completely removed or partially removed or completely remains on the piston blank (without removal).
- the clamping area completely remains on the piston blank, since thus the set structure (be it by a forging method, a casting method or another method) is no longer impaired because of Clamping range does not have to be removed.
- a slight or even slight impairment of the microstructure can be tolerated if the additionally existing clamping region is partially or even completely removed.
- Such an impairment does not matter if the cocking area that is removed is present in a region of the piston in which such impairments of the structure play no or only a subordinate role or this area is subjected to a further subsequent processing.
- the clamping range is provided in a piston with a combustion bowl in a particularly advantageous manner in the region of the combustion bowl trough edge, wherein the clamping region is not that region which forms the later combustion bowl trough edge, because it is removed.
- the arrangement of the clamping region in the combustion bowl trough edge region if after the removal of the clamping region of the then existing combustion bowl trough edge of a curing (eg by means of a reflow process or the like) is subjected.
- the starting point for the present invention is a piston blank.
- it is produced in a forging process or a casting process or similar process.
- a further machining of the piston is required.
- the piston blank in those areas with which it is fixed in position in the machine for further processing, provided with a circumferential surface with at least two distinct corners and / or curves.
- This may be, for example, a triangular shape, a square shape, a rectangular shape, an oval shape or shapes with more than four corners and / or curves.
- the curves are concave and / or convex with respect to an axis of the piston, in particular with respect to the Koibenhubachse.
- a polygon in particular a symmetrical or asymmetrical polygon (viewed in cross-section), is formed on or in the piston so as to provide a fastening region by means of which the piston is fixed in position in the machine for further processing.
- a polygon can also be formed as a Torx.
- the region in which the polygon according to the invention is provided is either only one region, which is formed by the piston blank, which is not required in the later use of the piston in the internal combustion engine and is therefore completely removed during finishing.
- the area may also be part of an element of the piston. In this case, for example, it is the combustion chamber trough produced after finishing the piston.
- the geometry of the finished combustion chamber guide is formed in the Kolbenrohüng so that the polygon described above is introduced in the region of the later combustion bowl. Over this clamping range, the piston blank can be fixed in position in the machine for further processing (such as a forging process, chip removal or drilling process). After these further processing steps have been carried out, the area of the previously formed polygon is then still eliminated and given the almost finished machined piston blank in this area its final shape.
- the application of the above manufacturing method is not limited to the area of the combustion bowl of the later finished piston, but may be performed elsewhere (such as inside the inside of the later shaft) and other areas.
- a method for producing a piston and piston produced thereafter wherein in a prefabricated piston blank a polygon is introduced, being fixed in position on this introduced into the piston blank polygon of the piston in a machine for further processing.
- the piston blank is formed from at least two parts. These exactly two parts (for example, an upper part with a ring section, possibly also with a combustion bowl or with at least one cooling channel, as well as a lower part at least with a Koibenschaft) or possibly. Also more than two parts are separately after identical or different methods (for example, glazing, forging or other suitable method) and made of the same or different materials (for example, steel material, aluminum material and the like) and joined by means of a suitable joining method inextricably to a one-piece piston blank, the further processing (for Example intermediate machining, in order to process joining areas, in particular removal of welding beads, which arise during friction welding, or a finishing, for example, to realize the required final mass) is subjected.
- identical or different methods for example, glazing, forging or other suitable method
- materials for example, steel material, aluminum material and the like
- the piston blank is provided during and / or after production with a region having a circumferential surface with at least two distinct corners and / or curves for clamping the piston blank for subsequent processing to a reliable holding the piston blank to ensure in a clamping tool of the processing machine.
- both parts are provided with an area with a circumferential surface with at least two distinct corners and / or curves for clamping the piston blank and the subsequent processing is a Reibschweiss vide to the two parts together unsolvable.
- FIG. 1 shows by way of example a polygon with inwardly directed bends.
- the individual sheets according to Figure 1 are different from each other, but may also all a uniform, that is symmetrical.
- the same applies to the polygon shown in FIG. Again, it is conceivable that the outward curves and / or the inward curves all the same, sometimes the same or completely different from each other to make.
- FIG. 3 shows, in principle, the upper part (piston head or piston head) of a coulter blank, which is designated by the reference number 1.
- An interior of the piston, which is not shown completely, is designated by 2, wherein the reference numeral 3 designates a cooling channel which may or may not be present.
- the piston blank 1 shown in Figure 3 is produced in a forging or casting or similar process, with a combustion bowl 4 is already partially prefabricated.
- the focal cavity 4 is not yet completely formed, but there are preferably circumferential portions 5 present, which is provided with a polygon, for example, according to Figure 1 or Figure 2 or other forms.
- about this polygonal region 5 of the piston blank 1 is fixed in the machine for further processing in its position. After this further processing has taken place, the hatched area 5 is also removed by subsequent processing, so that the combustion bowl 4 receives its final contour.
- FIG. 4 shows, as an alternative, that a piston blank 1, for example designed in the same way as the piston blank 1 according to FIG. 3, is hatched (hatched) during its manufacture with an additional region 6.
- the hatched area 6 according to FIG. 4 likewise like the hatched area 5 according to FIG. 3, has a polygonal area, in particular a polygonal circumferential side area (viewed from above from the direction of the piston stroke axis).
- the piston blank 1 according to FIG. 4 can be fixed in position in the machine for its further processing. After this is done, the area 6 is removed, either without a combustion bowl 4 is introduced (so that an approximately flat piston bottom is formed) or additionally a combustion bowl 4 is formed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2017004793A MX2017004793A (es) | 2014-10-17 | 2015-10-16 | Metodo para manufacturar un piston. |
RU2017115214A RU2017115214A (ru) | 2014-10-17 | 2015-10-16 | Способ изготовления поршня |
EP15787501.4A EP3206813A1 (de) | 2014-10-17 | 2015-10-16 | Verfahren zur hestellung eines kolbens |
CN201580056100.9A CN107000028A (zh) | 2014-10-17 | 2015-10-16 | 用于制造活塞的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014221117.4 | 2014-10-17 | ||
DE102014221117 | 2014-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016059229A1 true WO2016059229A1 (de) | 2016-04-21 |
Family
ID=54364275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/074048 WO2016059229A1 (de) | 2014-10-17 | 2015-10-16 | Verfahren zur hestellung eines kolbens |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3206813A1 (de) |
CN (1) | CN107000028A (de) |
DE (1) | DE102015220238A1 (de) |
MX (1) | MX2017004793A (de) |
RU (1) | RU2017115214A (de) |
WO (1) | WO2016059229A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120222305A1 (en) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Method for the production of a piston for an internal combustion engine |
US20140230774A1 (en) * | 2013-02-18 | 2014-08-21 | Federal-Mogul Corporation | Complex-Shaped Piston Oil Galleries With Piston Crowns Made By Cast Metal or Powder Metal Processes |
WO2014146635A1 (de) * | 2013-03-18 | 2014-09-25 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor und mittels dieses verfahrens hergestellter kolben |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6313639A (ja) * | 1986-07-05 | 1988-01-20 | Sanden Corp | ピストンリングの加工方法 |
JP2004515359A (ja) * | 2000-10-18 | 2004-05-27 | フェデラル−モーグル コーポレイション | 多軸鍛造されたピストン |
DE102007038444B3 (de) * | 2007-08-16 | 2009-04-16 | Danfoss Compressors Gmbh | Verfahren und Rohling zum Herstellen eines Verdichterblocks einer Kleinkältemaschine, insbesondere für eine hermetisch gekapselte Kältemittelverdichtereinrichtung |
CN101967646B (zh) * | 2009-07-27 | 2012-01-25 | 中国北车集团大同电力机车有限责任公司 | 提高柴油机组合活塞钢顶环槽耐磨性的方法 |
KR102007692B1 (ko) * | 2011-04-15 | 2019-08-06 | 테네코 인코퍼레이티드 | 피스톤 및 피스톤을 제작하는 방법 |
CN103147873B (zh) * | 2013-03-30 | 2015-05-27 | 长城汽车股份有限公司 | 发动机活塞机构、其加工方法及相应的发动机与汽车 |
CN203548591U (zh) * | 2013-10-21 | 2014-04-16 | 合肥力威汽车油泵有限公司 | 浮动轴承座的毛坯结构 |
CN103952864B (zh) * | 2014-04-28 | 2015-09-30 | 宁波市鄞州勇耀缝制机械有限公司 | 缝纫机旋梭的外梭的制造工艺 |
-
2015
- 2015-10-16 WO PCT/EP2015/074048 patent/WO2016059229A1/de active Application Filing
- 2015-10-16 RU RU2017115214A patent/RU2017115214A/ru not_active Application Discontinuation
- 2015-10-16 MX MX2017004793A patent/MX2017004793A/es unknown
- 2015-10-16 DE DE102015220238.0A patent/DE102015220238A1/de not_active Withdrawn
- 2015-10-16 CN CN201580056100.9A patent/CN107000028A/zh active Pending
- 2015-10-16 EP EP15787501.4A patent/EP3206813A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120222305A1 (en) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Method for the production of a piston for an internal combustion engine |
US20140230774A1 (en) * | 2013-02-18 | 2014-08-21 | Federal-Mogul Corporation | Complex-Shaped Piston Oil Galleries With Piston Crowns Made By Cast Metal or Powder Metal Processes |
WO2014146635A1 (de) * | 2013-03-18 | 2014-09-25 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor und mittels dieses verfahrens hergestellter kolben |
Also Published As
Publication number | Publication date |
---|---|
EP3206813A1 (de) | 2017-08-23 |
DE102015220238A1 (de) | 2016-04-21 |
RU2017115214A3 (de) | 2019-05-14 |
MX2017004793A (es) | 2017-07-27 |
RU2017115214A (ru) | 2018-11-19 |
CN107000028A (zh) | 2017-08-01 |
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