DE323141C - Process for drawing seamless tubes on hydraulic drawing presses - Google Patents
Process for drawing seamless tubes on hydraulic drawing pressesInfo
- Publication number
- DE323141C DE323141C DE1919323141D DE323141DD DE323141C DE 323141 C DE323141 C DE 323141C DE 1919323141 D DE1919323141 D DE 1919323141D DE 323141D D DE323141D D DE 323141DD DE 323141 C DE323141 C DE 323141C
- Authority
- DE
- Germany
- Prior art keywords
- die
- mandrel
- workpiece
- pulling
- holder
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/27—Carriages; Drives
- B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Description
Verfahren zum Ziehen von nahtlosen Rohren auf hydraulischen Ziehpressen. Die vorliegende. Erfindung bezweckt das Ziehen von nahtlosen Rohren auf einer hydraulischen Ziehpresse. Da bei zunehmender Länge und abnehmender Wandstärke des Rohres das Ziehen in der bekannten Weise auf einem Dorn durch Hindurchziehen durch die Matrize nicht -mehr möglich ist, so erfolgt nach der Erfindung das Ziehen in der Weise, daß ein Teil der Länge des Rohres durch einen Ziehring hindurchgezogen und der andere Teil der Rohrlänge durch Hinwegschieben der Matrize über das Rohr ausgestreckt wird, wobei zugleich der Dorn aus dem Rohr herausgezogen wird.Process for drawing seamless tubes on hydraulic drawing presses. The present. The invention aims to draw seamless tubes on a hydraulic system Drawing press. Because with increasing length and decreasing wall thickness of the pipe the pulling not in the known manner on a mandrel by pulling it through the die -more possible, according to the invention, the pulling takes place in such a way that a Part of the length of the pipe pulled through a pull ring and the other part the pipe length is extended by pushing the die over the pipe, at the same time the mandrel is pulled out of the tube.
In der Zeichnung zeigen die Fig. i bis 3 die verschiedenen Stufen des neuen Verfahrens. a ist -der Prellzylinder, b, b sind die Rückzugzylinder und c ist der Kreuzkopf, in dem das Rohr mittels einer Zange h befestigt wird, die beim Ziehen die Zugkraft von den Zylindern . b, b auf das Rohr überträgt. Der Kreuzkopf ist mit dem Preßkolben d und den Rückzugkolben e, o fest verbunden. Der Ziehring f ist in dem Matrizenringhalter g befestigt, der durch die beiden Zylinder h, h verschoben werden kann, deren Kolbenstangen i, i fest mit dem Matrizenhalter g verbunden sind. m ist ein Dorn, welcher vor dem Ziehen in das Rohr hineingebracht und beim Ziehen durch den Gegenhalter 7t in bekannter Weise festgehalten wird. Die beiden Stangen o, o verbinden den Gegenhalter x fest mit dem Matrizenhalter g, so daß eine Verschiebung von g auch eine solche von n zur Folge hat.In the drawing, FIGS. I to 3 show the various stages of the new process. a is - the bounce cylinder, b, b are the retraction cylinders and c is the cross head, in which the pipe is fastened by means of pliers h, which when pulling the pulling force of the cylinders. b, b transfers to the pipe. The cross head is firmly connected to the plunger d and the retraction piston e, o. The drawing ring f is fastened in the die ring holder g, which can be displaced by the two cylinders h, h , the piston rods i, i of which are firmly connected to the die holder g. m is a mandrel which is inserted into the pipe before pulling and which is held in a known manner by the counter holder 7t while pulling. The two rods o, o firmly connect the counter holder x to the die holder g, so that a displacement of g also results in a displacement of n.
Beim Beginn des Ziehverfahrens befindet_ sich das Rohr in der in Fig. i dargestellten Stellung. Wenn das Rohr durch die Zylinder b, b in den Ziehring f hineingezogen wird, so bewegt sich zunächst der Dorn in mit dem Rohr so weit, bis der Bund p am Gegenhalter n anliegt. Der Dorn steht dann mit seinem anderen Ende im Ziehring und verbleibt während des Ziehvorganges in dieser Lage. Wenn die Kolben e, e ihren Hub vollendet haben, ohne daß das Rohr völlständig durch den Ring f hindurchgezogen ist, so setzen sich sofort die Kolben i, i in Bewegung und schieben den Matrizenringhalter g mit dem Ziehring f, dem Gegenhalter x und dem Dorn in nach links, wobei der Ziehring f über das Rohr hinweggezogen und zugleich der Dorn .in aus, dem Rohr herausgezogen wird. Der Zylinder a führt durch Kolben d die Zange in die Anfangslage zurück.At the beginning of the drawing process, the pipe is in the position shown in FIG. When the tube is drawn into the drawing ring f by the cylinder b, b , the mandrel initially moves with the tube until the collar p rests on the counter holder n. The other end of the mandrel is then in the drawing ring and remains in this position during the drawing process. When the pistons e, e have completed their stroke without the tube being completely pulled through the ring f, the pistons i, i immediately start moving and push the die ring holder g with the pull ring f, the counter holder x and the mandrel in to the left, pulling the pull ring f over the pipe and at the same time pulling the mandrel out of the pipe. The cylinder a leads the pliers back to the starting position through piston d.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE323141T | 1919-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE323141C true DE323141C (en) | 1920-07-16 |
Family
ID=6171572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1919323141D Expired DE323141C (en) | 1919-09-23 | 1919-09-23 | Process for drawing seamless tubes on hydraulic drawing presses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE323141C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962155C (en) * | 1952-09-25 | 1957-04-18 | Phoenix Rheinrohr Ag Vereinigt | Hydraulic piston drive for drawbars |
-
1919
- 1919-09-23 DE DE1919323141D patent/DE323141C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962155C (en) * | 1952-09-25 | 1957-04-18 | Phoenix Rheinrohr Ag Vereinigt | Hydraulic piston drive for drawbars |
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