DE437822C - Device for pulling out a mandrel stuck in a bore - Google Patents

Device for pulling out a mandrel stuck in a bore

Info

Publication number
DE437822C
DE437822C DEB122711D DEB0122711D DE437822C DE 437822 C DE437822 C DE 437822C DE B122711 D DEB122711 D DE B122711D DE B0122711 D DEB0122711 D DE B0122711D DE 437822 C DE437822 C DE 437822C
Authority
DE
Germany
Prior art keywords
pulling out
bore
mandrel
stuck
dome
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
Application number
DEB122711D
Other languages
German (de)
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.)
PETER BOOS
Original Assignee
PETER BOOS
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 PETER BOOS filed Critical PETER BOOS
Priority to DEB122711D priority Critical patent/DE437822C/en
Application granted granted Critical
Publication of DE437822C publication Critical patent/DE437822C/en
Expired legal-status Critical Current

Links

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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders

Description

DEUTSCHES REICHGERMAN EMPIRE

AUSGEGEBEN AM 26. NOVEMBER 1926ISSUED NOVEMBER 26, 1926

REICHSPATENTAMTREICH PATENT OFFICE

PATENTSCHRIFTPATENT LETTERING

- JV* 437822 -KLASSE 7c GRUPPE 20 - JV * 437822 - CLASS 7c GROUP 20

(B 122711 //7c) (B 122711 // 7 c)

Peter Boos in Hemelingen b. Bremen.Peter Boos in Hemelingen b. Bremen.

Vorrichtung zum Herausziehen eines in einer Bohrung festsitzenden Dornes. Patentiert im Deutschön Reiche vom 14. November 1925 ab.Device for pulling out a mandrel stuck in a bore. Patented in the Deutschön Reiche on November 14, 1925.

Das Herausziehen eines dünnen, in einer Bohrung festsitzenden Domes bereitet große Schwierigkeiten und ist ohne Zuhilfenahme besonderer Vorrichtungen vielfach unmöglich. Trotz dieser Schwierigkeiten wird das Aufdornen von Bohrungen dort angewendet, wo es erforderlich ist, das Gewinde eines Bolzens in einem Blech so zu dichten, daß es auf seiner ganzen Länge wasser- und dampfdicht ist.Pulling out a thin dome stuck in a hole prepares great things Difficulties and is often impossible without the aid of special devices. Despite these difficulties, the flaring of holes is used where it is necessary to seal the thread of a bolt in a sheet metal so that it is on is waterproof and vapor-tight over its entire length.

Das vorgenannte Verfahren wird heute zum Dichten der Stehbolzen in Lokomotivkesseln fast allgemein angewandt. Hierbei verwendet man entweder konische oder zylindrischeThe aforementioned method is now used to seal the stud bolts in locomotive boilers almost universally applied. Either conical or cylindrical is used here

Dorne. Der konische Dorn läßt sich ohne Schwierigkeit aus der Bohrung herausziehen, hat aber den Nachteil, daß er das GewirMe des Bolzens nicht auf seiner ganzen Länge, sondern nur einen Teil desselben im Blech fest zur Anlage bringt. Das Herausziehen der zylindrischen Dorne geschieht entweder durch Zugschrauberv Gabelhebel' oder mittels Preßlufthämmer, welche eine Schlagwirkung nach zwei Richtungen hin ausüben können. Alle diese Einrichtungen, sind jedoch wegen der ihnen anhaftendeil· Mangel, insbesondere wegen des erforderlichen großen Zeitaufwandes zum Herausziehen der Dorne, nur in geringem Umfange zur Einführung gelangt.Thorns. The conical mandrel can be pulled out of the hole without difficulty, but has the disadvantage that it does not catch the tang of the bolt over its entire length, but only brings part of it firmly to the plant in the sheet metal. The pulling out the cylindrical mandrels are done either by pulling wrenches or fork levers Pneumatic hammers, which can have an impact in two directions. All of these facilities are, however because of the adherent part · deficiency, especially because of the required large Time required to pull out the mandrels, only to a small extent for introduction got.

Der Gegenstand der Erfindung soll die angeführten Mangel beseitigen. Es ist demzufolge erforderlich, daßThe object of the invention is intended to eliminate the deficiencies mentioned. It is therefore required that

.1. das Herausziehen des Domes mit geringstem Zeitaufwand geschieht,.1. pulling out the dome with the slightest Expenditure of time happens,

2. das Eintreiben des Domes mit jedem gewöhnlichen Preßlufthammer erfolgen kann.2. The dome can be driven in with any common jackhammer.

Der in der Abbildung dargestellte Preßluftzylinder Λ dessen durchbohrter Kolben B den Dorn aufnimmt^ wird vor einen Preßlufthammer geschaltet. Sobald der Dorn eingetrieben ist, wird durch Zuführung von Preßluft in. den Raum C der Dom aus der Bohrung herausgezogen.The compressed air cylinder shown in the figure Λ whose pierced piston B takes up the mandrel ^ is connected in front of a pneumatic hammer. As soon as the mandrel is driven in, the dome is pulled out of the bore by supplying compressed air into space C.

Claims (1)

Patentanspruch:Claim: Vorrichtung zum Herausziehen eines in einer Bohrung feststizenden Domes, dadurch gekennzeichnet, daß ein Preßluftarbeitszylinder, dessen durchbohrter Kolben einen Dorn aufnimmt, auf einer Stirnseite als Stütze ausgeführt ist und sich gegen die Umgebung der aufzudornenden Bohrung legt, während die andere Stirnseite zur Aufnahme und Führung eines Preßlufthammers ausgebildet ist.Device for pulling out a dome stuck in a bore, thereby characterized in that a compressed air working cylinder whose pierced piston receives a mandrel, is designed as a support on one end face and itself against the surroundings of the hole to be drilled, while the other end face is designed for receiving and guiding a pneumatic hammer.
DEB122711D 1925-11-14 1925-11-14 Device for pulling out a mandrel stuck in a bore Expired DE437822C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB122711D DE437822C (en) 1925-11-14 1925-11-14 Device for pulling out a mandrel stuck in a bore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB122711D DE437822C (en) 1925-11-14 1925-11-14 Device for pulling out a mandrel stuck in a bore

Publications (1)

Publication Number Publication Date
DE437822C true DE437822C (en) 1926-11-26

Family

ID=6995808

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB122711D Expired DE437822C (en) 1925-11-14 1925-11-14 Device for pulling out a mandrel stuck in a bore

Country Status (1)

Country Link
DE (1) DE437822C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222422A2 (en) * 1985-11-14 1987-05-20 The Boeing Company Cold-working tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222422A2 (en) * 1985-11-14 1987-05-20 The Boeing Company Cold-working tool
EP0222422A3 (en) * 1985-11-14 1988-07-20 The Boeing Company Cold-working tool

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