DE177802C - - Google Patents
Info
- Publication number
- DE177802C DE177802C DENDAT177802D DE177802DA DE177802C DE 177802 C DE177802 C DE 177802C DE NDAT177802 D DENDAT177802 D DE NDAT177802D DE 177802D A DE177802D A DE 177802DA DE 177802 C DE177802 C DE 177802C
- Authority
- DE
- Germany
- Prior art keywords
- workpiece
- mandrel
- stretching
- longitudinal direction
- rollers
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 210000001847 Jaw Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/06—Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
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KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Nach dem Patent 175346 finden zum Auswalzen von nahtlosen Röhren über einen Dorn Streck- und Lösungswalzen Anwendung; letztere vergrößern den Querschnitt des Werkstückes, so daß dasselbe allseitig vom Dorn loskommt. Die Lösungswalzen erfassen das Werkstück im Gegensatz zu den Streckwalzen nicht über den ganzen Umfang, sondern sie greifen in der Hauptsache nach parallel der Werkstückachse verlaufendenAccording to the patent 175346 find for rolling out seamless tubes over a Mandrel stretching and dissolving roll application; the latter enlarge the cross-section of the workpiece so that it comes loose from the mandrel on all sides. The solution rollers grasp the workpiece in contrast to the Stretching rollers do not cover the entire circumference, but mainly follow parallel to the workpiece axis
»Ebenen an. Sie sollen bekanntlich keine Streckung in der Längsrichtung, sondern nur solche in der Querrichtung hervorbringen, damit der innere Durchmesser des Werk-Stückes größer als der des Dornes wird. Dabei hat sich gezeigt, daß auch die Lösungswalzen eine, wenn auch beschränkte Längsstreckung bewirken, und diese nicht auf dem ganzen Umfang des Werkstückes, sondern nur stellenweise auftretende Längsstreckung kann zu unregelmäßigen Formänderungen des Werkstückes Anlaß geben, insbesondere bei dünnwandigen Werkstücken.“Layers on. As is well known, they should not be stretched in the longitudinal direction, but only produce such in the transverse direction, so that the inner diameter of the work piece becomes larger than that of the thorn. It has been shown that the solution rollers also have an, albeit limited, longitudinal extension effect, and this not over the entire circumference of the workpiece, but only longitudinal stretching occurring in places can give rise to irregular shape changes of the workpiece, especially in thin-walled workpieces.
Die Gefahr, daß eine ungleichmäßigeThe risk of an uneven
Streckung in der Längsrichtung beim Lösen erfolgt, soll durch die vorliegende Abänderung des Verfahrens nach dem Hauptpatent beseitigt werden; die Lösung vom Dorn soll nicht durch Walzung in der Längsrichtung, sondern durch eine in der Querrichtung, also von den Seiten her, auf das Werkstück einwirkende Pressung mittels entsprechend bewegter Preßwerkzeuge erfolgen. Preßbacken sind zwar, schon zur Ausübung eines seitlichen Längsdruckes auf hohle Werkstücke vorgeschlagen worden, indessen nicht für das hier in Frage stehende Verfahren, bei welchem es sich darum handelt, durch sinngemäß über den Werkstückumfang verteilten Druck eine allseitige Lösung des Werkstückes vom Dorn zu bewirken.Stretching in the longitudinal direction when loosening is intended by the present amendment the procedure according to the main patent will be eliminated; the solution from the thorn is supposed to not by rolling in the longitudinal direction, but by one in the transverse direction, that is from the sides, acting on the workpiece by means of correspondingly moved pressure Pressing tools take place. Press jaws are already used to exercise a lateral Longitudinal printing on hollow workpieces has been suggested, but not for this one method in question, in which it is concerned, by analogously about pressure distributed around the circumference of the workpiece, the workpiece is loosened from the mandrel on all sides to effect.
Bei dem abgeänderten Lösungsverfahren des Hauptpatentes können beide Paare der dort benutzten Lösungswalzen durch seitlich wirkende Preßwerkzeuge (Preßbacken, Preßschienen oder dergl.) ersetzt werden, es wird aber in manchen Fällen genügen, wenn an die Stelle des zuletzt zur Wirkung kommenden Lösungswalzenpaares der seitlich gerichtete Preßdruck tritt. Die Preßwerkzeuge können verhältnismäßig kurz ausgebildet werden, so daß dieselben durch wiederholtes Wirken das Werkstück absatzweise Vom Dorn lösen; es lassen sich aber auch je nach den Verhältnissen Preßwerkzeuge anwenden, welche den Hohlkörper auf seiner ganzen Länge mit einem Druck bearbeiten.In the modified solution method of the main patent, both pairs of there used solution rollers by laterally acting press tools (press jaws, press rails or the like), but in some cases it will suffice if an the point of the last pair of dissolving rollers coming into effect, the laterally directed one Pressure occurs. The pressing tools can be made relatively short, so that they loosen the workpiece intermittently from the mandrel by repeated action; it but can also be used depending on the circumstances pressing tools, which the Process the hollow body along its entire length with one pressure.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE177802C true DE177802C (en) |
Family
ID=442242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT177802D Active DE177802C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE177802C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5225705A (en) * | 1991-04-02 | 1993-07-06 | Honda Giken Kogyo Kabushiki Kaisha | Semiconductor stress sensor mesfet or mesfet array |
US5397911A (en) * | 1991-04-02 | 1995-03-14 | Honda Giken Kogyo Kabushiki Kaisha | Semiconductor sensor with plural gate electrodes |
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0
- DE DENDAT177802D patent/DE177802C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5225705A (en) * | 1991-04-02 | 1993-07-06 | Honda Giken Kogyo Kabushiki Kaisha | Semiconductor stress sensor mesfet or mesfet array |
US5397911A (en) * | 1991-04-02 | 1995-03-14 | Honda Giken Kogyo Kabushiki Kaisha | Semiconductor sensor with plural gate electrodes |
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