DE619001C - Device for bending bars or tubes by means of a shaped piece - Google Patents
Device for bending bars or tubes by means of a shaped pieceInfo
- Publication number
- DE619001C DE619001C DED67085D DED0067085D DE619001C DE 619001 C DE619001 C DE 619001C DE D67085 D DED67085 D DE D67085D DE D0067085 D DED0067085 D DE D0067085D DE 619001 C DE619001 C DE 619001C
- Authority
- DE
- Germany
- Prior art keywords
- shaped piece
- rollers
- tubes
- wedge
- projection
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
Description
Die bekannten Vorrichtungen zum Biegen von Stangen oder Rohren mittels eines Formstüekes, um das das Werkstück zu beiden Seiten gleichzeitig mittels eines Paares von Rollen gebogen wird, die an Hebeln ortsfest gelagert sind und durch, das. zwischen ihnen hindurchbewegte Formstück auseinandergedrängt werden, zeigen den Nachteil, daß zur Verhinderung des gegenseitigen Annäherns der Rollen zu Beginn der Biegung besondere Vorkehrungen gietroff en - sind, -welche den Raum, den die Biegevorrichtung einnimmt, vergrößern. Insbesondere hat man für die Hebel Anschläge vorgesehen, die auf einem Kreisringstück verstellbar sind. Die Erfindung vermeidet den Nachteil dieser bekannten Biegevorrichtungen dadurch, daß an dem Formstück ein Vorsprung vorgesehen ist, welcher bei Beginn des Formstückvorschubes die gegenseitige Annäherung der Rollen verhindert.The known devices for bending rods or tubes by means of a shaped piece, around the workpiece on both sides simultaneously by means of a pair of Rolls is bent, which are fixedly mounted on levers and through that. Between them shaped piece moved through it are forced apart, show the disadvantage that for Prevention of the rollers approaching each other at the beginning of the bend special Precautions are taken - which are the Increase the space occupied by the bending device. In particular, one has for the Lever stops are provided, which are adjustable on a circular ring piece. The invention avoids the disadvantage of these known bending devices in that on the shaped piece a projection is provided, which at the beginning of the molding feed the mutual Approach of the roles prevented.
In der Zeichnung sind drei Ausführungsbeispiele der Erfindung wiedergegeben. Three exemplary embodiments of the invention are shown in the drawing.
Die Fig. 1 bis 3 zeigen 'eine erste Ausführungsform bei drei verschiedenen Stellungen des Formstüdkes.1 to 3 show a first embodiment with three different positions of the molding.
Fig. 4 ist die Ansicht einer zweiten Ausführungsform, und dieFig. 4 is a view of a second embodiment, and the
Fig. 5 bis 7 zeigen ein drittes Ausführungsbeispiel wiederum in drei verschiedenen Stelhingen des Formstückes.FIGS. 5 to 7 show a third embodiment again in three different positions of the fitting.
Das zu biegende Rohr 1 ruht zwischen dem Formstück'2 und den Rollen 3. Letztere sitzen an den Hebeln 4, weichte an den ortsfesten Punkten 5« und sö angelenkt sind. An dem Formstück 2 sitzt ein Vorsprung 2a, welcher zu Beginn des Biegens eine Annäherung· der beiden Rollen 3 aneinander verhindert. Zu Beginn wird das Rohr zwischen dien beiden Punkten ti und ύ gebogen. Die auf die RoI-fen wirkende Kraft ist mit f1 bezeichnet, und der Vorsprung z" hält die Rollen fest, welche sonst danach streben wurden, sich in Richtung der Pfeile/ zu bewegen. Nach dieser Biegung nimmt dann das auf die Rollen wirkende Kraftmoment die Richtung/2 (Fig. 2) an. Von diesem Augenblick an bilden das Formstück und das Rohr Keile und drängen durch ihre Bewegung die Rollen auseinander (Fig. 3). . iThe resting tube to be bent between the Formstück'2 1 and the rollers 3. The latter sit on the levers 4 softened to the fixed points 5 'and s are hinged ö. At the mold 2 is located a projection 2a which is an approximation of the two rollers 3 · prevented at the start of bending with each other. At the beginning the pipe is bent between the two points ti and ύ. The force acting on the tubes is denoted by f 1 , and the projection z " holds the rollers in place, which would otherwise strive to move in the direction of the arrows /. After this bend, the moment of force acting on the rollers decreases the direction / 2 (Fig. 2) From this point on, the fitting and the pipe form wedges and their movement urges the rollers apart (Fig. 3)
Der Vorsprung 2' kann auch keilförmig sein, wie in Fig. 4 dargestellt ist. Es können auch, wie Fig. 5 bis 7 zeigen, der Keil 2" und das Formstück 2 voneinander getrennt sein. Bei diesem Beispiel stützt sich zu Beginn des Biegens das Formstück 2 gegen Anschläge 8 ab, und es erhält nur der Keil 2" einen Vorschub, welcher die Rollen 3 auseinanderdrängt. In der Stellung der Fig. 6 nimmt der Keil 2" das Formstück 2 durch den Anschlag 10 mit. Von diesem Zeitpunkt an bis zur Stellung der Fig. 7 verläuft das Biegen, wie vorstehend beschrieben.The projection 2 'can also be wedge-shaped, as shown in FIG. 4. It can also, as shown in FIGS. 5 to 7, the wedge 2 ″ and the shaped piece 2 are separated from one another be. In this example, the shaped piece 2 is supported against at the beginning of the bending Stops 8 from, and only the wedge 2 ″ receives a feed which pushes the rollers 3 apart. In the position of FIG. 6, the wedge 2 ″ takes the shaped piece 2 through the stop 10 with. From this point in time up to the position in FIG. 7, this runs Bend as described above.
Bei allen diesen Beispielen fällt die Vorschubrichtung mit der Symmetrieachse der Rollen 3 zusammen, und die Achsen 5°, sb der die Rollen tragenden Hebel 4 sind fest; sie sind beispielsweise am Körper der Vorschubvorrichtung vorgesehen. Selbstverständlich könnte aber das Formstück 2 fest und die Achsen ζα und 5Ä beweglich sein. Natürlich müßte dann im Falle der Fig. 5 das Formstück 2 die Möglichkeit zu einer Anfangsbewegung haben, welche derjenigen des Keiles 2" im umgekehrten Falle entspricht.In all of these examples, the direction of advance coincides with the axis of symmetry of the rollers 3, and the axes 5 °, s b of the levers 4 carrying the rollers are fixed; they are provided, for example, on the body of the feed device. Of course, however, the molded piece 2 could be fixed and the axes ζ α and 5 Ä movable. Of course, in the case of FIG. 5, the shaped piece 2 should then have the possibility of an initial movement which corresponds to that of the wedge 2 ″ in the opposite case.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED67085D DE619001C (en) | Device for bending bars or tubes by means of a shaped piece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED67085D DE619001C (en) | Device for bending bars or tubes by means of a shaped piece |
Publications (1)
Publication Number | Publication Date |
---|---|
DE619001C true DE619001C (en) | 1935-09-20 |
Family
ID=7059635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED67085D Expired DE619001C (en) | Device for bending bars or tubes by means of a shaped piece |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE619001C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4351178A (en) * | 1979-08-02 | 1982-09-28 | Hitachi, Ltd. | Apparatus for bending a straight tube into a serpentine tube |
-
0
- DE DED67085D patent/DE619001C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4351178A (en) * | 1979-08-02 | 1982-09-28 | Hitachi, Ltd. | Apparatus for bending a straight tube into a serpentine tube |
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