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DE1186691B - Arrangement for reducing stress peaks in blind holes loaded by internal pressure - Google Patents

Arrangement for reducing stress peaks in blind holes loaded by internal pressure

Info

Publication number
DE1186691B
DE1186691B DEF37200A DEF0037200A DE1186691B DE 1186691 B DE1186691 B DE 1186691B DE F37200 A DEF37200 A DE F37200A DE F0037200 A DEF0037200 A DE F0037200A DE 1186691 B DE1186691 B DE 1186691B
Authority
DE
Germany
Prior art keywords
internal pressure
arrangement
blind holes
stress peaks
reducing stress
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.)
Pending
Application number
DEF37200A
Other languages
German (de)
Inventor
Karl Kinkel
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.)
DEMAG DRUCKLUFTTECH
Frankfurter Maschinenbau AG
Original Assignee
DEMAG DRUCKLUFTTECH
Frankfurter Maschinenbau AG
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 DEMAG DRUCKLUFTTECH, Frankfurter Maschinenbau AG filed Critical DEMAG DRUCKLUFTTECH
Priority to DEF37200A priority Critical patent/DE1186691B/en
Publication of DE1186691B publication Critical patent/DE1186691B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K51/00Other details not peculiar to particular types of valves or cut-off apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Description

Anordnung zum Abbau von Spannungsspitzen in durch Innendruck belasteten Sacklöchern Die Erfindung bezieht sich auf eine Anordnung zum Abbau von Spannungsspitzen am Übergang vom Boden zur Wandung in durch hohen Innendruck belasteten Sacklöchern.Arrangement for relieving stress peaks in those exposed to internal pressure Blind holes The invention relates to an arrangement for reducing stress peaks at the transition from the floor to the wall in blind holes loaded by high internal pressure.

Wenn beispielsweise in Kolbenstangen angeordnete Sacklöcher von hohem Innendruck beaufschlagt sind, so treten insbesondere am Übergang vom Boden zur Wandung hohe Spannungen auf, wenn Unregelmäßigkeiten im Querschnitt einen einwandfreien Kraftfluß unmöglich machen. Derartige Spannungskonzentrationen sind bisher durch eine günstigere Formgebung des Übergangs vom Boden zur Bohrungswandung, beispielsweise durch Ausrundungsradien oder durch eine Feinbearbeitung der Innenfläche der Bohrung, vermindert werden.If, for example, blind holes arranged in piston rods of high Internal pressure are applied, so occur in particular at the transition from the floor to the wall high tensions when irregularities in the cross-section are flawless Make power flow impossible. Such stress concentrations are through so far a more favorable shape of the transition from the bottom to the bore wall, for example by rounding radii or by fine machining of the inner surface of the hole, be reduced.

Diese Maßnahmen sind jedoch verhältnismäßig kostspielig und erbringen auch nur eine geringfügige Verbesserung.However, these measures are relatively costly and provide even a slight improvement.

Aufgabe der Erfindung ist es daher, eine Anordnung der eingangs erwähnten Art so zu treffen, daß Spannungsspitzen am Übergang vom Boden zur Wandung in unter hohem Innendruck stehenden Sacklöchern vermieden werden.The object of the invention is therefore to provide an arrangement of the type mentioned at the beginning Kind so that voltage peaks at the transition from the floor to the wall in under High internal pressure standing blind holes can be avoided.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Sackloch ein mit einer Dichtung versehener Entlastungsstopfen vorgesehen ist, der den unteren Bereich des Sackloches gegen den in dessen oberem Bereich herrschenden Innendruck abdichtet, und daß der untere Bereich durch Kanäle dauernd druckentlastet ist.This object is achieved according to the invention in that in the blind hole a relief plug provided with a seal is provided, which the lower Area of the blind hole against the internal pressure prevailing in its upper area seals, and that the lower area is constantly relieved of pressure through channels.

Durch diese Anordnung wird erreicht, daß Radialspannungen an der Übergangsstelle vom Boden zur Wandung des Sackloches nicht mehr auftreten können: Auf den Boden des Sackloches wirken somit nur noch die durch den Innendruck hervorgerufenen Axialspannungen ein, so daß Spannungsspitzen, die durch das Zusammenwirken von Axial-und Radialspannungen entstehen, am gefährlichen Übergang vom Boden zur Wandung des Sackloches nicht mehr auftreten können. Nachstehend ist die Erfindung an Hand eines Ausführungsbeispiels näher erläutert: .This arrangement ensures that radial stresses at the transition point from the floor to the wall of the blind hole can no longer occur: On the floor of the blind hole, only the axial stresses caused by the internal pressure are effective a, so that stress peaks caused by the interaction of axial and radial stresses arise at the dangerous transition from the floor to the wall of the blind hole no longer may occur. The invention is based on an exemplary embodiment explained in more detail:.

In einem Maschinenteil 1 ist ein Sackloch 2 vorgesehen, das durch hohen Innendruck beaufschlagt ist. Zur Vermeidung von Spannungsspitzen am Übergang vom Boden 4 zur Wandung des Sackloches ist in dieses ein Entlastungsstopfen 3 eingesetzt, der mit einer Dichtung 3 versehen ist. Durch diese Dichtung wird der untere Bereich des Sackloches gegen den im oberen Bereich desselben herrschenden Druck abgedichtet. Der untere Bereich wird durch die Kanäle 5 und 5' dauernd vom Druck druckentlastet.In a machine part 1, a blind hole 2 is provided through high internal pressure is applied. To avoid voltage peaks at the transition from the bottom 4 to the wall of the blind hole a relief plug 3 is inserted into this, which is provided with a seal 3. This seal becomes the lower area the blind hole is sealed against the pressure prevailing in the upper area of the same. The lower area is continuously relieved of pressure through channels 5 and 5 '.

Claims (1)

Patentanspruch: Anordnung zum Abbau von Spannungsspitzen am Übergang vom Boden zur Wandung in durch hohen Innendruck belasteten Sacklöchern, dadurch gekennzeichnet, daß im Sackloch (2) ein mit einer Dichtung (3') versehener Entlastungsstopfen (3) vorgesehen ist, der den unteren Bereich des Sackloches gegen den in dessen oberem Bereich herrschenden Innendruck abdichtet, und daß der untere Bereich durch Kanäle (5, 5') dauernd druckentlastet ist.Claim: Arrangement for reducing stress peaks at the transition from the floor to the wall in blind holes loaded by high internal pressure, thereby characterized in that in the blind hole (2) a relief plug provided with a seal (3 ') (3) is provided that the lower area of the blind hole against the in its upper Area prevailing internal pressure seals, and that the lower area through channels (5, 5 ') is constantly relieved of pressure.
DEF37200A 1962-06-30 1962-06-30 Arrangement for reducing stress peaks in blind holes loaded by internal pressure Pending DE1186691B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF37200A DE1186691B (en) 1962-06-30 1962-06-30 Arrangement for reducing stress peaks in blind holes loaded by internal pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF37200A DE1186691B (en) 1962-06-30 1962-06-30 Arrangement for reducing stress peaks in blind holes loaded by internal pressure

Publications (1)

Publication Number Publication Date
DE1186691B true DE1186691B (en) 1965-02-04

Family

ID=7096780

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF37200A Pending DE1186691B (en) 1962-06-30 1962-06-30 Arrangement for reducing stress peaks in blind holes loaded by internal pressure

Country Status (1)

Country Link
DE (1) DE1186691B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738446A1 (en) * 1997-09-03 1999-03-04 Schlafhorst & Co W Open end spinner rotor shaft bearing mounting
DE19743744A1 (en) * 1997-10-02 1999-04-08 Schlafhorst & Co W Spinning rotor shaft for lathe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19738446A1 (en) * 1997-09-03 1999-03-04 Schlafhorst & Co W Open end spinner rotor shaft bearing mounting
US5966920A (en) * 1997-09-03 1999-10-19 W. Schlafhorst Ag & Co. Shaft for supporting and driving an open-end spinning rotor
DE19738446B4 (en) * 1997-09-03 2006-03-09 Saurer Gmbh & Co. Kg Shaft for supporting and driving an open-end spinning rotor
DE19743744A1 (en) * 1997-10-02 1999-04-08 Schlafhorst & Co W Spinning rotor shaft for lathe
US5979155A (en) * 1997-10-02 1999-11-09 W. Schlafhorst Ag & Co. Shaft arrangement for supporting and driving an open-end spinning rotor

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