DE869333C - Pit punch with roughened surface of the outer punch - Google Patents
Pit punch with roughened surface of the outer punchInfo
- Publication number
- DE869333C DE869333C DEP2787A DEP0002787A DE869333C DE 869333 C DE869333 C DE 869333C DE P2787 A DEP2787 A DE P2787A DE P0002787 A DEP0002787 A DE P0002787A DE 869333 C DE869333 C DE 869333C
- Authority
- DE
- Germany
- Prior art keywords
- pit
- punch
- roughened surface
- elevations
- depressions
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
Description
Die bekannten Grubenstempel aus Stahlrohren besitzen glatte Oberfläche. Bei ihrer Verwendung, insbesondere in Schräg- und Steilflözen, ist die glatte Oberfläche nachteilig,, weil der Bergmann beim Klettern an den meist durch Grubenwasser feuchten Grubenstempeln keinen Halt für Hand und genageltes Schuhwerk findet.The well-known pit punches made of steel pipes have a smooth surface. When used, especially in sloping and steep seams, the smooth surface disadvantageous, because the miner when climbing on the mostly damp from pit water Pit stamping finds no hold for hand and nailed footwear.
Dieser Nachteil wird weitgehend vermieden, wenn der Außenstempel der Grubenstempel erfindungsgemäß mit aufgerauhter Oberfläche versehen ist.This disadvantage is largely avoided if the outer punch of the Pit punch is provided according to the invention with a roughened surface.
Die Oberfläche kann Erhöhungen und Vertiefungen in Form von Längsrillen, Querrillen, Riffeln, Waffeln, Warzen od. dgl. tragen.The surface can have elevations and depressions in the form of longitudinal grooves, Wear transverse grooves, corrugations, wafers, warts or the like.
Zur Einsparung von Verformungsarbeit und zur Schonung der Verformungswerkzeuge können Streifen oder Flächen in Längs- und .Querrichtung bei der Oberflächenaufrauhung ausgespart werden, ohne daß dadurch die Zweckerfüllung des Aufrauhens wesentlich beeinträchtigt wird. Beispielsweise können die beiden Enden des Unterstempels, die üblicherweise nicht berührt werden, die glatte Oberfläche beibehalten. Längsrillen können streifenweise unter Zwischenschaltung von Streifen glatter Oberfläche angeordnet werden.To save deformation work and to protect the deformation tools Stripes or surfaces can be created in the longitudinal and transverse direction when the surface is roughened can be left out without thereby substantially fulfilling the purpose of the roughening is affected. For example, the two ends of the lower punch that are usually not touched, maintaining the smooth surface. Longitudinal grooves can be arranged in strips with the interposition of strips of a smooth surface will.
Es hat sich als zv@eckmäßig erwiesen, Vertiefungen bzw. Erhebungen von mindestens etwa i mm, vorzugsweise 1,5 bis 2,5 mm Tiefe bzw. Höhe vorzusehen. Die Oberfläche erhält damit ausreichende Griffigkeit. Zugleich wird der verhältnismäßig große Verschleiß im Berg-tverksbetrieb berücksichtigt.It has proven to be zv @ angular to provide depressions or elevations of at least about 1 mm, preferably 1.5 to 2.5 mm depth or height. This gives the surface sufficient grip. At the same time, the relatively high level of wear and tear in mountain transport is taken into account.
Zum Aufrauhen der Oberfläche von Rohren für Grubenstempel sind Verfahren zur spanlosen Verformung besonders- geeignet. Als zweckmäßig wurde das Ziehen auf Rohrziehbänken festgestellt. Das Walzen in Rohrwalzwerken oder Walzvorrichtungen, die den Rohrwalzwerken üblicherweise nachgeschaltet sind, erspart zusätzliche Verrichtungen und Zwischenerwärmungen. Aus dem gleichen Grunde ist es zweckmäßig, bei Herstellung von Rohren für Grubenstempel, insbesondere aus Aluminium, durch StrangpressenLängsrillen mittels entsprechender Formgebung der-Strangpreßmatrizen zu erzeugen.There are methods for roughening the surface of pipes for pit punches particularly suitable for non-cutting deformation. Pulling on was found to be expedient Pipe drawing benches noted. Rolling in tube mills or rolling devices, which are usually connected downstream of the pipe rolling mills, saves additional work and intermediate heating. For the same reason, it is useful when manufacturing of pipes for pit punches, in particular made of aluminum, by extrusion longitudinal grooves to produce by means of appropriate shaping of the extrusion dies.
In der Zeichnung sind Ausführungsformen von Grubenstempeln gemäß der Erfindung dargestellt, und zwar zeigt Abb. i einen Grubenstempel, dessen Außenstempel mit walzenförmigen Erhebungen versehen ist, statt dessen könnten auch entsprechende Vertiefungen vorgesehen sein, Abb. 2 einen Abschnitt eines Außenstempels mit länglichen bzw. ovalen Erhebungen, und Abb. 3 läßt eine mit Längsrillen versehene Oberfläche erkennen; die Abb. 4 stellt in vergrößerter Form einen Schnitt entlang der Linie A-B der Abb. i dar.In the drawing are embodiments of pit punches according to Invention shown, namely Fig. I shows a pit punch, the outer punch is provided with roller-shaped elevations, instead of this, corresponding Depressions be provided, Fig. 2 a section of an outer punch with elongated or oval elevations, and Fig. 3 leaves a surface provided with longitudinal grooves recognize; Fig. 4 shows, on an enlarged scale, a section along the line A-B of Fig. I.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP2787A DE869333C (en) | 1949-05-03 | 1949-05-03 | Pit punch with roughened surface of the outer punch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP2787A DE869333C (en) | 1949-05-03 | 1949-05-03 | Pit punch with roughened surface of the outer punch |
Publications (1)
Publication Number | Publication Date |
---|---|
DE869333C true DE869333C (en) | 1953-03-02 |
Family
ID=7358261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP2787A Expired DE869333C (en) | 1949-05-03 | 1949-05-03 | Pit punch with roughened surface of the outer punch |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE869333C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5056753A (en) * | 1989-03-07 | 1991-10-15 | Lunau Kevin R | Safety support structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE232398C (en) * |
-
1949
- 1949-05-03 DE DEP2787A patent/DE869333C/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE232398C (en) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5056753A (en) * | 1989-03-07 | 1991-10-15 | Lunau Kevin R | Safety support structure |
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