DE1017120B - Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches) - Google Patents

Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches)

Info

Publication number
DE1017120B
DE1017120B DES41572A DES0041572A DE1017120B DE 1017120 B DE1017120 B DE 1017120B DE S41572 A DES41572 A DE S41572A DE S0041572 A DES0041572 A DE S0041572A DE 1017120 B DE1017120 B DE 1017120B
Authority
DE
Germany
Prior art keywords
clamping ring
clamping
punches
lock
ring punches
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
DES41572A
Other languages
German (de)
Inventor
Dr-Ing Gerhard Sonntag
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.)
SCHWARZ KG HERMANN
Hermann Schwarz KG
Original Assignee
SCHWARZ KG HERMANN
Hermann Schwarz KG
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 SCHWARZ KG HERMANN, Hermann Schwarz KG filed Critical SCHWARZ KG HERMANN
Priority to DES41572A priority Critical patent/DE1017120B/en
Publication of DE1017120B publication Critical patent/DE1017120B/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/28Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/32Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
    • E21D15/325Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring

Description

Vorrichtung zur Erhöhung der Knickfestigkeit von Klerilmringstempeln (Haltevorrichtung für das Schloß von Klemmringstempeln) Es sind nachgiebige. Klemmringstempel bekannt, bei denen ein oder mehrere übereinander angeordnete, einseitig aufgeschlitzte Ringe den rohrförmigen Oberstempel mit Hilfe einer Klemmvorrichtung im Reibungsschluß umfassen. Diese z. B. nach Fig. 1 den Oberstempel 1 haltenden Klemmringe 2 und 3 werden mit dem Unterstempe14 bisher durch eine gemeinsame Brücke 5 fest verbunden. Diese Konstruktio#n hat den -Nachteil, daß beei exzentrischer Belastung oder andersartiger Biegeb-,anspruchung des Stempels einem Ausknicken des Stempels in Richtung der der Verbindungsbrücke gegenüberliegenden Seite nur der Quer - schnitt dieser Brücke entgegenwirkt. Die Klemmringe mit dein Oberstempel heben sich dabei vor ihrer Auflage auf dem Unterstempel ab und kippen unter Verformung der Verbindungsbrücke über diese hinweg.Device to increase the buckling strength of Klerilmringstempeln (holding device for the lock of clamping ring punches) They are flexible. Clamping ring punches are known in which one or more rings arranged one above the other and slit open on one side encompass the tubular upper punch with the aid of a clamping device in frictional engagement. This z. B. according to FIG. 1, the upper punch 1 holding clamping rings 2 and 3 are firmly connected to the lower punch 14 by a common bridge 5 so far. This construction has the disadvantage that in the event of eccentric loading or other types of bending stress on the stamp, only the cross -section of this bridge counteracts buckling of the stamp in the direction of the side opposite the connecting bridge. The clamping rings with your upper punch lift off before they rest on the lower punch and tilt over them, deforming the connecting bridge.

Als Abhilfe könnte daran gedacht werden, den Ouerschnitt und den Widerstand der Verbindungsgrücke den Werten des Stempelquerschnittes anzupassen; das würde aber zu einer unförmigen und schweren Verbindungsbrücke führen. Es wird daher eine zweite zu der ersten vorzugsweis-e um 180" versetzte Verbindungsbrücke vorgeschlagen, deren Querschnitt gering gehalten werden könnte, da diese jetzt vorherrschend Zug- und Druckkräfte und in geringerem Maße Biegung zu übertragen haben. An einem Klemmring können aber nicht mehrere Verbindungsbrücken befestigt werden, da diese die elastische Verformbarkeit des Klemmringes, die zu einer möglich-,t gleichmäßigen Umfassung des Oberstempels erforderlich ist, behindern würden.As a remedy, one could think of adapting the cross-section and the resistance of the connection gap to the values of the punch cross-section; but that would lead to a bulky and heavy connecting bridge. A second connecting bridge, preferably offset by 180 " , is therefore proposed, the cross section of which could be kept small, since these now have to transmit predominantly tensile and compressive forces and to a lesser extent bending. However, several connecting bridges cannot be connected to one clamping ring be attached, since these would hinder the elastic deformability of the clamping ring, which is necessary for a possible, t uniform encompassing of the upper punch.

Es wird daher weiter vorgeschlagen, gemäß Fig. 2 von diesen beiden Verbindungsbrücken die eine, 6, zur Befestigung des unteren, 3, und die zweite, 7, zur Befestigung des oberen Klemmringes 2 mit dem Unterstempel 4 zu verwenden.It is therefore further proposed, as shown in FIG. 2, of these two connecting bridges to use one, 6, for fastening the lower one, 3, and the second, 7, for fastening the upper clamping ring 2 with the lower punch 4.

Das Schloß der Klemm.ringe wurde in Fig. 2 nicht gezeichnet.The lock of the Klemm.ringe was not shown in FIG.

Der gleiche Erfolg wird erzielt, wenn bei mehr als zwei Klemmringen zwei oder mehr versetzte Befestigungsbrücken verwendet werden.The same success is achieved if there are more than two clamping rings two or more staggered mounting bridges can be used.

Da bei einem Klemmring zwei Verbindungsbrücken die Klemmbewegung dieses geschlitzten Ringes behindern würden, wird für Stempel mit nur einem Klemmring eine andere Lösung nach Fig. 3 vorgeschlagen: Oberhalb des Klemmringes 3 befindet sich ein Ring 8, der über mehrere Brücken 9 mit dem Unterstempel 4 verbunden wird, wobei vorhandene Brücken 5 der Klemmrin,-befestigung mit benutzt werden können. Dies-er Ring 8 verhindert dann das zu Fig. 1 beschriebene Knicken.. The clamping ring Above 3 there is a ring 8 connected via a plurality of bridges 9 with the lower punch 4: Because the clamping movement would hinder this split ring in a clamping ring two connecting bridges, a different solution according to Figure 3 is proposed for seals with only one clamping ring is, whereby existing bridges 5 of the clamping ring, fastening can be used with. This ring 8 then prevents the kinking described in relation to FIG. 1.

Dieser zusätzliche Haltering kann natürlich auch bei mehreren Klemmringen Verwendung finden lind über diese angeordnet oder auch zwischen diese ein-,-schaltet ge werden.This additional retaining ring can of course also be used with several clamping rings They are used if they are arranged over them or are switched on or off between them become.

Claims (2)

PATENTANSPRÜCHE: 1. Zweiteiliger Grubenstempel, bei dem mehrere Klemmringe zum Einspannen des Innenstempels vorgesehen und mittels Verbindungsbrücken am Außenstempel befestigt sind, dadurch gekennzeichnet, daß mindestens zwei nicht an denselben Klemmringen befindliche Brücken vorhanden und gegeneinander, vorzugsweise um einen Winkel von 90 bis 180', versetzt sind. PATENT CLAIMS: 1. Two-part pit punch, in which several clamping rings are provided for clamping the inner punch and are fastened to the outer punch by means of connecting bridges, characterized in that at least two bridges that are not located on the same clamping rings are present and against each other, preferably at an angle of 90 to 180 ', are offset. 2. Zweiteiliger Grubenstempel, bei dem ein oder mehrere Klemmringe zum Einspannen des Innenstempels vorgesehen sind, dadurch gekennzeichnet, daß oberhalb des oder der Klemmringe oder zwischen zwei Klemmringen ein Haltering angeordnet und am Außenstempel mittels mehrerer Verbindungsbrücken befestigt ist.2. Two-part pit stamp, in which one or more clamping rings are provided for clamping the inner punch are, characterized in that above the or the clamping rings or between two clamping rings arranged a retaining ring and on the outer die by means of several connecting bridges is attached.
DES41572A 1954-11-16 1954-11-16 Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches) Pending DE1017120B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES41572A DE1017120B (en) 1954-11-16 1954-11-16 Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES41572A DE1017120B (en) 1954-11-16 1954-11-16 Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches)

Publications (1)

Publication Number Publication Date
DE1017120B true DE1017120B (en) 1957-10-10

Family

ID=7484041

Family Applications (1)

Application Number Title Priority Date Filing Date
DES41572A Pending DE1017120B (en) 1954-11-16 1954-11-16 Device to increase the buckling strength of clamping ring punches (holding device for the lock of clamping ring punches)

Country Status (1)

Country Link
DE (1) DE1017120B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075517B (en) * 1960-02-18 Hermann Schwarz Kommanditgesellschaft, Wattenscheid Two-part pit stamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075517B (en) * 1960-02-18 Hermann Schwarz Kommanditgesellschaft, Wattenscheid Two-part pit stamp

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