EP0724921B1 - Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe - Google Patents
Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe Download PDFInfo
- Publication number
- EP0724921B1 EP0724921B1 EP95710001A EP95710001A EP0724921B1 EP 0724921 B1 EP0724921 B1 EP 0724921B1 EP 95710001 A EP95710001 A EP 95710001A EP 95710001 A EP95710001 A EP 95710001A EP 0724921 B1 EP0724921 B1 EP 0724921B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- hollow cylinder
- wall
- ironing
- internal mandrel
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/30—Deep-drawing to finish articles formed by deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
Definitions
- the invention relates to a method for producing a tubular Housing for pumps, motors and the like, in particular Fuel pump housing, on the inner wall for tight mounting e.g. a bearing plate of a pump motor, the inside diameter of the Enlarging step with constant outer diameter is trained.
- Pump housings of this type are made from welded, cut to length Pipe manufactured, with a subsequent machining a step is formed on both sides and the desired surface qualities and dimensions are manufactured. This is a big one Manufacturing costs connected, which in a significant way, the economy and marketability of such pump housing.
- the invention is based on the object , while avoiding the disadvantages mentioned, of specifying a method with which an improved tubular housing for pumps, motors and the like, in particular fuel pumps, can be produced in a simple manner without machining.
- the task is, based on the general procedure, solved according to the invention in that in a first Process stage from a metal blank by deep drawing or deep pressing in several steps a cup-shaped hollow body is generated that the Hollow body in a second process step on its free edge is expanded on the outside and the bottom of the pot is removed by one on both sides open hollow cylinder provide that in the extension an internal mandrel is used, the shape, dimensioning and surface of the chipless stage to be created is adjusted, and that the stage on the inner wall of the Hollow cylinder by ironing in several steps over the inner mandrel is produced and finally the inner mandrel is removed and the housing is cut to length.
- the second open side of the Hollow cylinder expanded and a further gradation on the inner wall of the Hollow cylinder by ironing in several steps over the inner mandrel manufactured.
- a sufficient one is just in the expansion area Amount of material provided via the subsequent ironing to the Gradation in the desired length and wall thickness without further processing to be able to produce, with a degree of deformation of about 50% becomes.
- the extension is preferably V-shaped, but it is noted that rectangular widening is also possible in principle.
- the deep-drawn part produced using the method according to the invention is a cylinder open on both sides, which is open at a predetermined distance from each Page has the gradation produced without cutting.
- the outer diameter is reduced in the gradation range Wall thickness with an enlarged inner diameter compared to the central part of the housing. It is advantageously achieved that the shape and Positional tolerances are smaller, the roughness depths that can be achieved are smaller through the production a material solidification is achieved that Pump housing less sensitive to damage during handling especially in the galvanic aftertreatment or during transport, makes.
- the tubular housing 1 of a fuel pump shown in FIGS. 1 to 3 of the drawing represents a hollow cylinder of circular cross-section which is open on both sides and has an identical outer diameter D A throughout.
- the housing 1 consists of a central part 2, which merges on both sides into a gradation area 3 or 4, which is drawn in an enlarged representation in FIGS. 3 and 4 of the drawing.
- the inner diameter D I of the central area increases in the gradation areas 3 and 4 to an average value D Z lying between D A and D I , the wall thickness in the gradation areas 3 and 4 correspondingly being reduced to approximately half the wall thickness of the central part 2 .
- Figures 2 and 3 with the details Y and X in an enlarged view show the gradation areas 3 and 4 and particularly illustrate that the steps 5 provided adjacent to the open sides of the case 1 and 6 worked out at right angles from the inner wall of the housing 1 are, with an inner radius R 0.2max must be observed in order to be in the finished state at the levels 5, 6 adjacent and pressed end shields for Keep fuel pump parts liquid-tight without additional sealants.
- transition edge to the central part 2 in one Angle of 30 ° is chamfered.
- the manufacture of the housing 1 is carried out according to FIG. 4 of the drawing in different ways Procedural steps.
- This is based on a metal blank 7, so a flat circular sheet metal part, from which by application a deep-drawn hollow body 8 as the forming technique is generated as shown in Fig. 4/1.
- the deep drawing is in itself known way in such a way that by means of a preceding stamp and a drawing ring, the blank 7 is pulled and in this way a vessel is formed, whereby during the deep drawing the blank diameter - as shown in the drawing - steadily reduced from the initial diameter and reaches the punch diameter towards the end of the drawing process.
- the Dragging is done in several steps, with this process being done by Fig. 4/2 is clarified.
- the drawing is then shown in FIG. 4/3 the free edge of the pot-shaped hollow body 8 extends outwards (Antulpen), where in the preferred embodiment according to the drawing V-shape for the antulpung / extension 9 is selected. Then the Pot bottom 10 removed by punching around a sleeve 11 open on both sides 4/4 of the drawing.
- the material thickness does not change on average and therefore the The surface of the exit blank 7 and the sleeve 11 are approximately the same size. Due to the deformation, the material has already solidified surrender.
- the further processing now takes place in the forming process of deep-drawing in a further step, the sleeve 11, which is pulled forward in the stop, being used as the starting shape instead of the flat cut.
- the aim here is to form stages 5 and 6 in a simple manner, the drawing part thereby being brought to its final length at the same time.
- the process of deep drawing in continuous blow is known as such and is also referred to as ironing, which is preferably carried out in several steps.
- An inner mandrel 12 is inserted into the antulpung 9 according to FIG. 4/5 of the drawing from below or the sleeve 11 is placed over such an inner mandrel.
- This is adapted in shape, dimensioning and surface to the level 5 or 6 to be produced without cutting and thus has a pin 13 projecting into the sleeve 11 and a stamp part 14.
- the pin 13 has an outer diameter which is matched to the inner diameter D I of the sleeve 11, while the stamp part 14 has a diameter which corresponds to the inner diameter D Z in the graded area of the finished housing 1.
- the shape, dimensions and surface of the inner mandrel 12 are matched to the gradation areas 3 and 4 to be produced in the subsequent drawing process. With a reduction, not shown, the further forming is now carried out in several stages.
- Fig. 4/6 shows the result.
- the step 5 now formed on one side of the sleeve 11 can be seen.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- ein Kraftstoffpumpengehäuse im Schnitt,
- Fig. 2
- einen vergrößerten Ausschnitt "Y" des Kraftstoffpumpen-Gehäuses der Fig. 1,
- Fig. 3
- einen vergrößerten Ausschnitt "X" des Kraftstoffpumpen-Gehäuses der Fig. 1,
- Fig. 4
- die stufenweise Herstellung eines Kraftstoffpumpen-Gehäuses gemäß Fig. 1 in Einzelansichten Fig. 4/1 bis Fig. 4/8, schematisch.
- 1
- Gehäuse
- 2
- Zentralteil
- 3
- Abstufungsbereich
- 4
- Abstufungsbereich
- 5
- Stufe
- 6
- Stufe
- 7
- Ronde
- 8
- topfförmiger Hohlkörper
- 9
- Erweiterung bzw. Antulpung
- 10
- Topfboden
- 11
- Hülse
- 12
- Innendorn
- 13
- Zapfen
- 14
- Stempelteil
- 15
- Erweiterung/Antulpung
- DI
- Innendurchmesser
- DA
- Außendurchmesser
- DZ
- Abstufungsbereich
- R
- Innenradius
Claims (4)
- Verfahren zur Herstellung eines rohrförmigen Gehäuses für Pumpen, Motoren und dergleichen, insbesondere Kraftstoffpumpen-Gehäuses, an dessen Innenwandung zur dichten Halterung z.B. eines Lagerschildes eines Pumpenmotors eine den Innendurchmesser (DI) des Gehäuses (1) bei gleichbleibendem Außendurchmesser (DA) vergrößernde Stufe (5 bzw. 6) ausgebildtet ist,
dadurch gekennzeichnet,
daß in einer ersten Verfahrensstufe aus einer Metallronde (7) durch Tiefziehen oder Tiefpressen in mehreren Schritten ein topfförmiger Hohlkörper (8) erzeugt wird, daß der Hohlkörper (8) in einer zweiten Verfahrensstufe an seinem freien Rand nach außen erweitert (9) wird und der Topfboden (10) entfernt wird, um einen beidseitig offenen Hohlzylinder (11) bereitzustellen, daß in die Erweiterung (9) ein Innendorn (12) eingesetzt wird, der in Form, Dimensionierung und Oberfläche an die spanlos zu erstellende Stufe (5) angepaßt ist, und daß die Stufe (5) an der Innenwandung des Hohlzylinders (11) durch Abstreckziehen in mehreren Schritten über den Innendorn (12) hergestellt wird und schließlich der Innendorn (12) entfernt und das Gehäuse (1) ggf. abgelängt wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß auch die zweite offene Seite des Hohlzylinders (Hülse 11) erweitert (15) wird und eine zweite Abstufung (6) an der Innenwandung des Hohlzylinders durch Abstreckziehen in mehreren Schritten über den Innendorn (12) ausgebildet wird.
- Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß im Bereich der Erweiterungen (9 bzw. 15) gerade eine ausreichende Materialmenge für das anschließende Abstreckziehen bereitgestellt wird, um die Abstufung (5 bzw. 6) in gewünschter Länge und Wandstärke ohne Weiterbearbeitung herzustellen, wobei ein Verformungsgrad von etwa 50% eingestellt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Erweiterung (9 bzw. 15) V-förmig ausgebildet ist.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59507047T DE59507047D1 (de) | 1995-01-03 | 1995-01-03 | Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe |
EP95710001A EP0724921B1 (de) | 1995-01-03 | 1995-01-03 | Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe |
AT95710001T ATE185501T1 (de) | 1995-01-03 | 1995-01-03 | Rohrförmiges gehäuse insbesondere für eine kraftstoffpumpe |
JP7354529A JPH08281343A (ja) | 1995-01-03 | 1995-12-21 | とくに燃料ポンプ用の管状ハウジング |
CA 2166443 CA2166443A1 (en) | 1995-01-03 | 1996-01-02 | Tubular housing, in particular for a fuel pump |
CZ967A CZ796A3 (en) | 1995-01-03 | 1996-01-02 | Tubular cabinet and process for producing thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95710001A EP0724921B1 (de) | 1995-01-03 | 1995-01-03 | Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0724921A1 EP0724921A1 (de) | 1996-08-07 |
EP0724921B1 true EP0724921B1 (de) | 1999-10-13 |
Family
ID=8221681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95710001A Expired - Lifetime EP0724921B1 (de) | 1995-01-03 | 1995-01-03 | Rohrförmiges Gehäuse insbesondere für eine Kraftstoffpumpe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0724921B1 (de) |
AT (1) | ATE185501T1 (de) |
DE (1) | DE59507047D1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19732792A1 (de) * | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Kolbenpumpe |
DE102019127797B4 (de) * | 2019-10-15 | 2021-09-23 | Progress-Werk Oberkirch Ag | Verfahren und Vorrichtung zum Herstellen eines Gehäuses |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE551389C (de) * | 1932-05-30 | Carlos Catherine Guillermet | Vertikalfoerderpumpe, bei der die einzelnen Steigrohrteile durch Muffen verbunden sind | |
US3878802A (en) * | 1972-07-25 | 1975-04-22 | Bosch Gmbh Robert | Motor housing and method of making the same |
GB1411713A (en) * | 1972-01-24 | 1975-10-29 | Bosch Gmbh Robert | Manufacture of hollow cylinders |
JPS56150952A (en) * | 1980-04-23 | 1981-11-21 | Hitachi Ltd | Manufacture of outer frame for motor |
JPS57166862A (en) * | 1981-04-03 | 1982-10-14 | Mitsubishi Electric Corp | Manufacture of housing for rotary electric machine |
JPH0466798A (ja) * | 1990-07-06 | 1992-03-03 | Honda Motor Co Ltd | 燃料ポンプ装置 |
JPH04203288A (ja) * | 1990-11-29 | 1992-07-23 | Keihin Seiki Mfg Co Ltd | 車輌用燃料ポンプ |
DE4106148A1 (de) * | 1991-02-27 | 1992-09-03 | Progress Werk Oberkirch Ag | Verfahren zum herstellen eines lagersitzes mit hoher massgenauigkeit mittels der tiefziehtechnik |
EP0530786A2 (de) * | 1991-09-06 | 1993-03-10 | Progress-Werk Oberkirch Aktiengesellschaft | Spalttopf für einen Spaltrohrmotor sowie Verfahren zum Herstellen eines Spalttopfes |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3428010A (en) * | 1967-02-03 | 1969-02-18 | Continental Can Co | Method of making a metallic can and cover |
DE3105538A1 (de) * | 1980-03-13 | 1982-08-26 | Sexton Can Co., Inc., 02149 Everett, Mass. | Metallbehaelter |
US4522049A (en) * | 1983-03-14 | 1985-06-11 | Aluminum Company Of America | Aluminum alloy food can body and method for making same |
NL8301069A (nl) * | 1983-03-28 | 1984-10-16 | Hoogovens Groep Bv | Driedelige metalen verpakkingsbus, halfprodukt voor de vervaardiging van deze bus, en een werkwijze voor de vervaardiging van metalen verpakkingsbussen. |
-
1995
- 1995-01-03 AT AT95710001T patent/ATE185501T1/de not_active IP Right Cessation
- 1995-01-03 DE DE59507047T patent/DE59507047D1/de not_active Expired - Fee Related
- 1995-01-03 EP EP95710001A patent/EP0724921B1/de not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE551389C (de) * | 1932-05-30 | Carlos Catherine Guillermet | Vertikalfoerderpumpe, bei der die einzelnen Steigrohrteile durch Muffen verbunden sind | |
GB1411713A (en) * | 1972-01-24 | 1975-10-29 | Bosch Gmbh Robert | Manufacture of hollow cylinders |
US3878802A (en) * | 1972-07-25 | 1975-04-22 | Bosch Gmbh Robert | Motor housing and method of making the same |
JPS56150952A (en) * | 1980-04-23 | 1981-11-21 | Hitachi Ltd | Manufacture of outer frame for motor |
JPS57166862A (en) * | 1981-04-03 | 1982-10-14 | Mitsubishi Electric Corp | Manufacture of housing for rotary electric machine |
JPH0466798A (ja) * | 1990-07-06 | 1992-03-03 | Honda Motor Co Ltd | 燃料ポンプ装置 |
JPH04203288A (ja) * | 1990-11-29 | 1992-07-23 | Keihin Seiki Mfg Co Ltd | 車輌用燃料ポンプ |
DE4106148A1 (de) * | 1991-02-27 | 1992-09-03 | Progress Werk Oberkirch Ag | Verfahren zum herstellen eines lagersitzes mit hoher massgenauigkeit mittels der tiefziehtechnik |
EP0530786A2 (de) * | 1991-09-06 | 1993-03-10 | Progress-Werk Oberkirch Aktiengesellschaft | Spalttopf für einen Spaltrohrmotor sowie Verfahren zum Herstellen eines Spalttopfes |
Also Published As
Publication number | Publication date |
---|---|
DE59507047D1 (de) | 1999-11-18 |
ATE185501T1 (de) | 1999-10-15 |
EP0724921A1 (de) | 1996-08-07 |
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