EP3586004A1 - VERFAHREN ZUR HERSTELLUNG VON GEHÄUSEN FÜR ROLLENSTÖßEL - Google Patents
VERFAHREN ZUR HERSTELLUNG VON GEHÄUSEN FÜR ROLLENSTÖßELInfo
- Publication number
- EP3586004A1 EP3586004A1 EP18704137.1A EP18704137A EP3586004A1 EP 3586004 A1 EP3586004 A1 EP 3586004A1 EP 18704137 A EP18704137 A EP 18704137A EP 3586004 A1 EP3586004 A1 EP 3586004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housings
- profile
- housing
- roller
- bar profile
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000011265 semifinished product Substances 0.000 claims abstract description 4
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 238000007373 indentation Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000005336 cracking Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002347 wear-protection layer Substances 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0439—Supporting or guiding means for the pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
Definitions
- the invention relates to a method for producing cup-like housings for roller tappets, wherein each housing has a one-piece tailed bottom, in the outside of a diametrically continuous semi-cylindrical indentation for immediate storage of a role for a periodic Huber Weger sits, with an inside of the soil with a facility for a follower part is provided.
- the housing after the above citation are constructed comparatively complicated. Their production / shaping takes place in individual processing, for example, by extrusion or cutting with great handling effort. Thus, there are relatively high component costs.
- this object is achieved in that in a first step, a rod profile is kept ready as a semi-finished product in the length of two immediately adjacent housing, that in a further step, two substantially hollow cylindrical interiors with the facilities at Endstirnen the rod profile while maintaining an axially central Solid section are introduced therebetween, that in a subsequent step, a radially through the solid section-based bore, centered on a transverse median plane of the bar profile, manufactured and that then the bar profile is separated along the transverse center plane to obtain two housings.
- two housings for roller tappets can be produced simultaneously from a semifinished product, wherein prior to the cracking process, the interiors at the end brackets of the bar profile can optionally also be braced successively.
- a forming such as extrusions to represent the interiors may also be in question.
- a particular advantage is that after the separation of the two housings no further processing, except for an optional coating of the recesses, takes place.
- the recesses in the floor, in which the cam rollers run directly can be provided, for example, with a DLC wear protection layer after the separation.
- the housings manufactured according to the invention are provided in particular for roller tappets, such as those used in high-pressure fuel pumps, for example, for diesel engines. However, it is also conceivable and envisaged for use with valve train roller thrust.
- 2, 3 are longitudinal sections through a rod profile for the production of two housings offset from one another by 90 °;
- FIG. 4 is a plan view of FIGS. 2 and 4
- FIG. 5 is a perspective view of the bar profile.
- FIG. 1 shows a roller tappet 20 for a high-pressure fuel pump of an internal combustion engine.
- the roller tappet 20 has a cup-shaped housing 1 with an integrally connected bottom 3.
- a semi-cylindrical indentation 5 for direct storage of a roller 6 for a lifting cam.
- Lateral the roller start is limited by disc-like elements 17 which are fixed radially outward by a snap ring 18.
- An inside 7 of the bottom 3 (see Fig. 2, 3) has a one-piece tailed, dome-like attachment 8 for a pump piston within a "hollow" interior 10.
- On both sides of the indentation 5 is continuously through the bottom 3 each designed as a bore axial passage 19 for fuel, lubricant or air shown.
- This "double" Bar profile 9 is separated from a strand.
- the hollow cylindrical interior spaces 10 are turned off with the systems 8 at Endstirnen 1 1 of the bar profile 9 while maintaining an axially central solid portion 13, which takes place simultaneously, o-, with only one tool, successively.
- a radially extending bore 14 is bored through the solid section 13, centered on a transverse center plane of the bar profile 9, and then finished by fine grinding.
- the bar profile 9 is cracked along the transverse center plane, against which two chipped cracking grooves 16 lie, so that two finished casings 1 are present for completion with the roller 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017103481.1A DE102017103481B4 (de) | 2017-02-21 | 2017-02-21 | Verfahren zur Herstellung von Gehäusen für Rollenstößel |
PCT/DE2018/100015 WO2018153395A1 (de) | 2017-02-21 | 2018-01-11 | VERFAHREN ZUR HERSTELLUNG VON GEHÄUSEN FÜR ROLLENSTÖßEL |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3586004A1 true EP3586004A1 (de) | 2020-01-01 |
EP3586004B1 EP3586004B1 (de) | 2021-06-09 |
Family
ID=61189190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18704137.1A Active EP3586004B1 (de) | 2017-02-21 | 2018-01-11 | Verfahren zur herstellung von gehäusen für rollenstössel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3586004B1 (de) |
CN (1) | CN110312866B (de) |
DE (1) | DE102017103481B4 (de) |
WO (1) | WO2018153395A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101655020B (zh) * | 2009-09-21 | 2012-03-21 | 芜湖杰锋汽车动力系统有限公司 | 一种新型的机械式可变挺柱机构及其控制方法 |
DE102009056303A1 (de) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102009056306A1 (de) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102009056304A1 (de) | 2009-11-30 | 2011-06-01 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102010019982A1 (de) | 2010-05-10 | 2011-11-10 | Schaeffler Technologies Gmbh & Co. Kg | Rollenstößel |
DE102012207088B4 (de) | 2012-04-27 | 2021-11-18 | Schaeffler Technologies AG & Co. KG | Rollenstößel für eine Kraftstoffhochdruckpumpe mit einer Ausdrehsiche-rung für ein teilringförmiges Schalensegment zur Lagerung der Rolle |
EP3026232B1 (de) * | 2014-11-27 | 2020-01-08 | Aktiebolaget SKF | Mechanisches System zur Formung eines Kurvenrollers oder eines Kipphebels, Einspritzpumpe oder Ventilstellglied mit solch einem mechanischen System und Verfahren zur Herstellung solch eines mechanischen Systems |
CN204457902U (zh) * | 2014-12-25 | 2015-07-08 | 潍柴动力股份有限公司 | 滚轮式挺柱 |
-
2017
- 2017-02-21 DE DE102017103481.1A patent/DE102017103481B4/de active Active
-
2018
- 2018-01-11 WO PCT/DE2018/100015 patent/WO2018153395A1/de unknown
- 2018-01-11 EP EP18704137.1A patent/EP3586004B1/de active Active
- 2018-01-11 CN CN201880011879.6A patent/CN110312866B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN110312866A (zh) | 2019-10-08 |
CN110312866B (zh) | 2021-03-12 |
EP3586004B1 (de) | 2021-06-09 |
WO2018153395A1 (de) | 2018-08-30 |
DE102017103481B4 (de) | 2018-10-31 |
DE102017103481A1 (de) | 2018-08-23 |
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