DE3029049A1 - Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool - Google Patents

Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool

Info

Publication number
DE3029049A1
DE3029049A1 DE19803029049 DE3029049A DE3029049A1 DE 3029049 A1 DE3029049 A1 DE 3029049A1 DE 19803029049 DE19803029049 DE 19803029049 DE 3029049 A DE3029049 A DE 3029049A DE 3029049 A1 DE3029049 A1 DE 3029049A1
Authority
DE
Germany
Prior art keywords
piston
sheet metal
gudgeon pin
rotary press
press tool
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.)
Ceased
Application number
DE19803029049
Other languages
German (de)
Inventor
Michael Ing.(grad.) 6251 Selters Klautke
Ulrich Ing.(grad.) 8501 Wendelstein Wasserburger
Michael Dipl.-Ing. Dr. 8504 Stein Zeuch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19803029049 priority Critical patent/DE3029049A1/en
Priority to IT23110/81A priority patent/IT1138860B/en
Priority to DK341481A priority patent/DK341481A/en
Publication of DE3029049A1 publication Critical patent/DE3029049A1/en
Ceased legal-status Critical Current

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
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons

Abstract

The process is intended for producing a piston, particularly for a compressor. The piston body is formed by deep-drawing from a relatively thin sheet metal blank after which the gudgeon pin bearing bores (11,12) are formed by a rotary press tool without cutting metal. The piston preferably has constant wall thickness. The inner ends of the gudgeon pin bearings may be cleaned up by a subsequent cutting machining operation if required.

Description

Verfahren zum Herstellen eines KolbensMethod of making a piston

Stand der Technik Die Erfindung geht aus von einem Verfahren zum Herstellen eines Kolbens nach der Gattung des Hauptanspruchs. Es ist bekannt, relativ einfach gestaltete Kolben in der Massenfertigung durch Sintern oder Fließpressen herzustellen, wobei unter anderem auch bereits die Bolzenaugen mit angeformt werden. Derartige Kolben sind - obwohl schon recht einfach - für eine Massenherstellung immer noch relativ aufwendig, insbesondere was den Materialaufwand betrifft.PRIOR ART The invention is based on a method of production a piston according to the preamble of the main claim. It is known to be relatively simple manufacture designed pistons in mass production by sintering or extrusion, whereby, among other things, the bolt eyes are also molded on. Such Pistons, although quite simple, are still suitable for mass production relatively expensive, especially in terms of the cost of materials.

Vorteile der Erfindung Das erfindungsgemäße Verfahren mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß hier ein Kolben auf die denkbar einfachste Weise hergestellt werden kann, wobei auch der Werkstoffaufwand auf ein Minimum gesenkt werden kann.Advantages of the invention The method according to the invention with the characterizing Features of the main claim has the advantage that a piston is on here the simplest conceivable way can be produced, with the cost of materials can be reduced to a minimum.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Merkmale möglich.The measures listed in the subclaims are advantageous Further developments and improvements to the features specified in the main claim are possible.

Zeichnung Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Längsschnitt durch einen Kolben nach einem ersten Verfahrensschritt, Figuren 2 und 3 Längs- und Querschnitt nach der Fertigstellung.Drawing An embodiment of the invention is shown in the drawing and explained in more detail in the following description. It show figure 1 shows a longitudinal section through a piston after a first method step, Figures 2 and 3 longitudinal and cross-section after completion.

Beschreibung des Ausführungsbeispieles Der Kolben 10 nach Figur 1 ist zweckmäßigerweise aus einer relativ dünnen Blechplatine durch Tiefziehen zu einem becherförmigen Gebilde umgeformt. Wie man sieht, besitzt der Kolben nach dlesem Verfahrensschritt keine Bolzenaugen.Description of the exemplary embodiment The piston 10 according to FIG. 1 is expediently closed by deep drawing from a relatively thin sheet metal plate formed into a cup-shaped structure. As you can see, the piston has after dlesem Process step no bolt eyes.

Diese werden vielmehr in einem zweiten Verfahrens schritt erzeugt, und zwar durch Fließlochbohren. Dazu wird mit einem Spezialbohrer von außen her an der Stelle, an der sich das Bolzenauge und die Bohrung für die Aufnahme des Kolbenbolzens befinden sollen, ein Bohrvorgang derart vollzogen, daß das Material mit dem Spezialbohrer unter gleichzeitigem Druck auf denselben sehr stark erwärmt und dadurch in das Innere des Kolbens verdrängt wird. Der Bohrer durchdringt die Wand, wodurch also gleichzeitig das Bolzenauge 11 und die Bohrung 12 für den Kolbenbolzen entstehen. Eine Materialabtragung findet bei diesem Vorgang nicht statt. In genau derselben Weise wird das andere Kolbenauge samt der Bohrung gefertigt. Dies geschieht zweckmäßiger Weise auf einer entsprechend gestalteten Vorrichtung, so daß die Bohrungen genau fluchten. Sie können, falls erforderlich, zum SchluB nur noch fein bearbeitet werden , was auch für den Abstand zwischen den beiden innenliegenden Enden der Bohrungen gilt.Rather, these are generated in a second process step, namely by flow drilling. This is done from the outside with a special drill at the point where the pin eye and the hole for receiving the piston pin are located are to be located, a drilling process is carried out in such a way that the material with the special drill under simultaneous pressure on it very strongly heated and thereby into the interior of the piston is displaced. The drill penetrates the wall, thus simultaneously the bolt eye 11 and the bore 12 for the piston pin arise. A material removal does not take place during this process. In exactly the same way, the other becomes Piston eye including the bore manufactured. This is conveniently done on a appropriately designed device so that the holes are exactly aligned. You can, if necessary, only finely processed in the end, which also applies to the The distance between the two inner ends of the holes applies.

Bei entsprechend genauer Herstellung und geringen Anforderungen an das Endprodukt ist auch dies nicht unbedingt notwendig.With correspondingly precise production and low requirements the end product is also not absolutely necessary.

Zweckmäßigerweise ist die Wanddicke des Kolbens überall konstant und relativ dünn, z.B. 2 mm bei einem Kolbenaußendurchmesser von ca. 30 mm.The wall thickness of the piston is expediently constant everywhere and relatively thin, e.g. 2 mm with an outer piston diameter of approx. 30 mm.

Claims (4)

Ansprüche X Verfahren zum Herstellen eines Kolbens für Kolbenmaschinen, insbesondere Kolbenverdichter, der aus einem etwa becherförmig geformten Rohteil aus Blech besteht und in Bolzenaugen ausgebildete Bohrungen für die Aufnahme eines Kolbenbolzens hat, dadurch gekennzeichnet, daß die Bolzenaugen (11) und die Bohrungen (12) gleichzeitig durch Fließlochbohren hergestellt werden.Claims X method for producing a piston for piston engines, in particular a reciprocating compressor, which consists of an approximately cup-shaped blank consists of sheet metal and bores formed in bolt eyes for receiving a Piston pin, characterized in that the pin eyes (11) and the bores (12) can be produced simultaneously by flow drilling. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Kolbenrohteil durch Fließpressen hergestellt ist.2. The method according to claim 1, characterized in that the piston blank is made by extrusion. 3. Verfahren nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß die Wanddicke des Kolbens konstant und relativ dünn ist.3. The method according to claim 1 and / or 2, characterized in that the wall thickness of the piston is constant and relatively thin. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß - falls erforderlich - notwendige spanabhebende Arbeitsvorgänge nach der Herstellung des Kolbens vorgenommen werden.4. The method according to any one of claims 1 to 3, characterized in that that - if necessary - necessary machining operations after production of the piston.
DE19803029049 1980-07-31 1980-07-31 Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool Ceased DE3029049A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19803029049 DE3029049A1 (en) 1980-07-31 1980-07-31 Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool
IT23110/81A IT1138860B (en) 1980-07-31 1981-07-24 PROCEDURE FOR MAKING A PISTON
DK341481A DK341481A (en) 1980-07-31 1981-07-30 PROCEDURE FOR MANUFACTURING A STAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803029049 DE3029049A1 (en) 1980-07-31 1980-07-31 Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool

Publications (1)

Publication Number Publication Date
DE3029049A1 true DE3029049A1 (en) 1982-02-25

Family

ID=6108571

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803029049 Ceased DE3029049A1 (en) 1980-07-31 1980-07-31 Deep drawn sheet metal compressor piston - has gudgeon pin bearing bores produced by non-cutting rotary press tool

Country Status (3)

Country Link
DE (1) DE3029049A1 (en)
DK (1) DK341481A (en)
IT (1) IT1138860B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19603586A1 (en) * 1996-02-01 1997-08-07 Teves Gmbh Alfred Cold-formed piston for a hydraulic brake
DE19730200A1 (en) * 1997-07-15 1999-01-21 Schaeffler Waelzlager Ohg Housing for a switchable tappet
CN104668909A (en) * 2015-02-05 2015-06-03 北京华夏富润工贸有限公司 High-precision weldless iridium crucible and manufacturing method of iridium products

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359794B2 (en) * 1972-12-15 1976-01-15 Geffen, Johannes Adrianus Van, Apeldoorn (Niederlande) PINCH ROTATING QUICKLY AROUND ITS AXIS TO MAKE A HOLE IN A METAL PLATE OR THE WALL OF A METAL PIPE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2359794B2 (en) * 1972-12-15 1976-01-15 Geffen, Johannes Adrianus Van, Apeldoorn (Niederlande) PINCH ROTATING QUICKLY AROUND ITS AXIS TO MAKE A HOLE IN A METAL PLATE OR THE WALL OF A METAL PIPE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Z.: Maschinenmarkt, Würzburg 1978, S. 27, 28, 33 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19603586A1 (en) * 1996-02-01 1997-08-07 Teves Gmbh Alfred Cold-formed piston for a hydraulic brake
DE19730200A1 (en) * 1997-07-15 1999-01-21 Schaeffler Waelzlager Ohg Housing for a switchable tappet
CN104668909A (en) * 2015-02-05 2015-06-03 北京华夏富润工贸有限公司 High-precision weldless iridium crucible and manufacturing method of iridium products
CN104668909B (en) * 2015-02-05 2017-02-22 北京华夏富润工贸有限公司 Manufacturing method of high-precision weldless iridium crucible

Also Published As

Publication number Publication date
IT8123110A0 (en) 1981-07-24
IT1138860B (en) 1986-09-17
DK341481A (en) 1982-02-01

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: B21D 53/84

8131 Rejection