EP0497780A1 - Process for the two-directional bending of sheet metal. - Google Patents
Process for the two-directional bending of sheet metal.Info
- Publication number
- EP0497780A1 EP0497780A1 EP90913054A EP90913054A EP0497780A1 EP 0497780 A1 EP0497780 A1 EP 0497780A1 EP 90913054 A EP90913054 A EP 90913054A EP 90913054 A EP90913054 A EP 90913054A EP 0497780 A1 EP0497780 A1 EP 0497780A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- cheek
- sheet
- sheet metal
- rocker
- 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.)
- Granted
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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/042—With a rotational movement of the bending blade
Definitions
- the invention relates to a method according to the preamble of patent claim 1.
- the bending cheek can only be used in one working direction, for example in the case of a pivoting movement from bottom to top in a clockwise direction.
- a folding machine with a machine frame, lower beam, upper beam and bending beam for carrying out the method according to the invention is characterized in that a first rocker is provided on both end faces of the bending beam, which can be pivoted about the pivot axis of the bending beam the first rocker has a second rocker movably mounted, and that a guide is provided on the second rocker, which permits a substantially rectilinear movement of the bending beam running perpendicular to the pivot axis, which in turn runs essentially perpendicular to the direction of movement of the second rocker.
- Figure 1 several successive to 8 steps in the opposite bending of a sheet
- FIG. 9 shows a device for carrying out a sheet metal bend in opposite directions corresponding to FIGS. 1 to 8.
- FIGS. 1 to 8 each schematically show the essential parts of a folding machine, namely a lower beam 1, an upper beam 2 and a bending beam 3.
- Die Bending beam 3 is rotatably mounted on the machine frame (not shown) and can be pivoted about a pivot axis S, which in FIGS. 1 to 8 runs perpendicular to the plane of the drawing.
- a sheet 4 is clamped by lowering the upper cheek 2 in the direction of arrow A, which protrudes with a sheet metal section 5 over the cheeks 1, 2.
- the bending cheek 3 engages with its upper or bending surface on the underside of the sheet metal section 5.
- This side is also called the first side of the sheet 4 in the following, it is opposite the upper or second side of the sheet 4.
- FIG. 1 shows the initial state of the bending process.
- the bending beam 3 is pulled back from the bent sheet metal section 5 in a first adjustment direction (arrow C) perpendicular to its pivot axis S, so that it - cf. FIG. 4 - can be pivoted freely around this bent sheet metal section 5 further upwards (arrow D) until, after pivoting by a total of approximately 180 °, it faces the second or upper side of the sheet 4.
- the pivoting cheek 3 according to FIG.
- the adjustment directions of the bending cheek 3 according to the arrows C and E in FIGS. 3 and 5 run only apparently parallel to one another.
- the arrow C always runs parallel to the small side and the arrow E always runs parallel to the large side of the rectangle schematically representing the bending beam 3 in the drawing.
- the two adjustment directions according to the arrows C and E are therefore always perpendicular to one another, and the arrow C has also pivoted through 90 ° during the transition from FIG. 3 to FIGS. 4 and 5, as indicated by the broken line in FIG is.
- this adjustment direction (arrow E) runs perpendicular to the plane containing the first adjustment direction (arrow C) and the pivot axis S. In FIG. 5, this plane runs perpendicular to the plane of the drawing and parallel to arrow C.
- the sheet-metal section 5a is bent in the opposite direction to the sheet-metal section 5 by pivoting the bending beam 3 downward by 90 ° in the direction of the arrow F or clockwise.
- the sheet 4 bent in the opposite direction at its edge can now be removed from the folding machine.
- the swivel bending machine is brought back into its starting position according to FIG. 1 by correspondingly adjusting the bending cheek 3 along arrows E and F.
- the bending beam 3 acts on the first sheet metal side during the first bending process and on the second sheet metal side during the second bending process, as shown in FIGS. 1 and 7 is evident.
- the adjustment of the bending beam 3 in the first adjustment direction (along the arrow C; FIG. 3) is necessary in order to be able to transfer the bending beam 3 from the first to the second sheet metal side via the bent sheet metal section 5.
- the bending beam 3 (see FIG. 4) passes over the projecting part of the top beam 2, the bending beam 3 must also move in the second direction of adjustment in the direction of arrow E. can also be adjusted (cf.
- FIG. 5 so that it can in turn be placed on a sheet metal section 5a protruding between the lower beam and the upper beam (cf. FIG. 7).
- These two mutually perpendicular, reciprocating adjustment movements of the bending beam 3 according to the arrows C, C ⁇ and E, are therefore essential for the method according to the invention and ultimately ensure that an opposite sheet metal bending is possible without turning the sheet.
- FIG. 9 schematically shows a folding machine 10 which is structurally set up so that the bending method explained with reference to FIGS. 1 to 8 can be carried out on it.
- FIG. 9 shows a front view of only the right side of such a folding machine 10. The other side is correspondingly mirror-symmetrical.
- FIG. 9 the upper beam 2 and the bending beam 3, which are mounted on a machine frame, are shown.
- the bending beam 3, which can be pivoted about the pivot axis S, in FIG. 9 conceals the lower beam 1, which is also mounted in the machine frame 11 and is visible in FIGS. 1 to 8.
- the upper cheek 2 can be moved up and down in the direction of arrow G, which corresponds to the arrows A and A ⁇ in FIGS. 1 and 6, for tensioning and releasing the sheet metal 4.
- the upper beam 2 is connected to a hydraulic cylinder 12 attached to the machine frame 11.
- the pivoting movement of the bending beam 3 about the pivot axis S is indicated in FIG. 9 by the arrows H, which correspond to the arrows B, D, F in FIGS.
- the pivoting of the bending beam 3 takes place with the aid of a motor 13 fastened to the machine frame 11.
- a second rocker 16 is rotatably mounted about an axis 15.
- the axis 15 lies below the pivot axis S.
- a piston-cylinder unit 18 is provided, the cylinder 19 of which is rigidly connected to the bending cheek 3 and the piston rod 21 of which is connected to the foot 17 ,
- the cylinder 19 can also be guided in a straight line along the arrows I on the second rocker 16.
- the piston-cylinder unit 18 thus forms a guide for the bending beam 3 in such a way that when the unit 18 is actuated, the bending beam 3 can be displaced in a straight line relative to the second rocker 16, specifically away from the pivot axis S or onto it Axis too.
- This first adjustment movement of the bending beam 3 is represented by the arrows I, which correspond to the arrows C, CL in FIGS. 3 and 7.
- the second adjustment movement mentioned above which is perpendicular to the plane containing the first adjustment direction I and the pivot axis S (drawing plane of FIG. 9), is realized with the aid of the second rocker 16. If this is pivoted about the axis 15 with the aid of a drive motor 22 indicated by a broken line in FIG. 9, the bending beam 3 or at least the working surface thereof which engages the sheet to be bent is adjusted perpendicular to the plane of the drawing in FIG. 9 according to the arrow E in FIG. 5.
- E RSATZ B LATT It is possible to design the straight guide formed by the piston-cylinder unit 18 in the embodiment according to FIG. 9 in a different way, for example by sliding the bending cheek 3, whereby this cheek 3 has a special drive device, e.g. B. an electric motor with gear spindle is assigned.
- the second rocker 16 could - instead of being pivotable about the axis 15 - also in another way, for. B. also by a straight guide, slidably connected to the first rocker 14.
- the constructive design of the folding machine 10 must ensure that the adjustment possibilities of the bending beam 3 are given in the first and second adjustment directions (arrows C and E) explained in detail above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Un procédé de cintrage opposé d'une tôle comprend les opérations suivantes: on applique la joue de pliage d'une machine à cintrer oscillante sur une première face d'un tronçon de tôle et l'on plie celui-ci, selon un angle prédéterminé, dans un premier sens de rotation; on retire ensuite du tronçon de tôle replié, la joue de pliage dans un premier sens de déplacement, perpendiculairement à son axe de pivotement et l'on continue de l'incliner, dans le premier sens de rotation, jusqu'à ce qu'elle soit tournée vers la deuxième face de la tôle opposée à la première face; on déplace la joue de pliage dans un deuxième sens de déplacement perpendiculaire au premier; on applique la joue de pliage, après déplacement correspondant de la tôle repliée entre la joue inférieure et la joue supérieure de la machine à cintrer, sur la deuxième face de la tôle et l'on plie celle-ci selon un angle prédéterminé, par pivotement de la joue de pliage dans un deuxième sens de rotation opposé au premier. Dans la machine à cintrer pour la mise en oeuvre de ce procédé, la joue de pliage est montée de manière à pouvoir exécuter deux mouvements perpendiculaires entre eux dans les premier et deuxième sens de déplacement.A method of opposing bending of a sheet metal comprises the following operations: the bending cheek of an oscillating bending machine is applied to a first face of a section of sheet metal and it is bent at a predetermined angle , in a first direction of rotation; then withdrawn from the folded sheet section, the folding cheek in a first direction of movement, perpendicular to its pivot axis and it continues to tilt, in the first direction of rotation, until it either turned towards the second face of the sheet opposite to the first face; the folding cheek is moved in a second direction of movement perpendicular to the first; the folding cheek is applied, after corresponding displacement of the folded sheet between the lower cheek and the upper cheek of the bending machine, on the second face of the sheet and the latter is folded at a predetermined angle, by pivoting of the folding cheek in a second direction of rotation opposite to the first. In the bending machine for the implementation of this method, the folding cheek is mounted so as to be able to execute two movements perpendicular to each other in the first and second directions of movement.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90913054T ATE96062T1 (en) | 1989-10-26 | 1990-08-30 | PROCEDURE FOR REVERSE BENDING OF A SHEET METAL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3935658 | 1989-10-26 | ||
DE3935658A DE3935658A1 (en) | 1989-10-26 | 1989-10-26 | METHOD FOR TURNING A SHEET OPTIMALLY |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0497780A1 true EP0497780A1 (en) | 1992-08-12 |
EP0497780B1 EP0497780B1 (en) | 1993-10-20 |
Family
ID=6392261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90913054A Expired - Lifetime EP0497780B1 (en) | 1989-10-26 | 1990-08-30 | Process for the two-directional bending of sheet metal |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0497780B1 (en) |
JP (1) | JP3122126B2 (en) |
CA (1) | CA2067732C (en) |
DE (2) | DE3935658A1 (en) |
DK (1) | DK0497780T3 (en) |
ES (1) | ES2046795T3 (en) |
WO (1) | WO1991006383A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10427893B2 (en) | 2013-06-27 | 2019-10-01 | Ras Reinhardt Maschinenbau Gmbh | Handling device and bending installation and method for bending a part to be bent |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006047108B4 (en) * | 2006-09-27 | 2009-09-10 | Ras Reinhardt Maschinenbau Gmbh | Bending machine for bending flat material |
DE102007039848B4 (en) * | 2007-08-23 | 2009-10-15 | Hans Schröder Maschinenbau GmbH | Swivel bending machine for bending a workpiece from sheet metal |
JP6269514B2 (en) * | 2015-01-13 | 2018-01-31 | トヨタ自動車株式会社 | Power line bending method |
KR101933532B1 (en) | 2018-09-28 | 2018-12-28 | 한용운 | Panel bending apparatus for door and method for bending a panel for a door using the same |
DE102019008118B4 (en) * | 2019-11-21 | 2022-09-15 | Wolfram Hochstrate | Swivel bending machine, especially for counter bending with a duplex folding beam |
CN111036737B (en) * | 2019-11-26 | 2021-08-27 | 歌尔股份有限公司 | Bending and pressing device and bending and pressing method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH392434A (en) * | 1963-08-13 | 1965-05-31 | Puell Werner Von | Storage for long bending loads on folding machines |
FR2502518A1 (en) * | 1981-03-26 | 1982-10-01 | Favrin Pierre | Folding press for return bends in sheet metal - has folding plate pivoting in two planes against bolster |
FR2597398B1 (en) * | 1986-04-16 | 1990-12-07 | Favrin Pierre | PIVOTING APRON BENDING PRESS |
FR2630356A1 (en) * | 1988-04-20 | 1989-10-27 | Dimeco Alipresse | FOLDING MACHINE |
-
1989
- 1989-10-26 DE DE3935658A patent/DE3935658A1/en not_active Withdrawn
-
1990
- 1990-08-30 ES ES199090913054T patent/ES2046795T3/en not_active Expired - Lifetime
- 1990-08-30 CA CA002067732A patent/CA2067732C/en not_active Expired - Fee Related
- 1990-08-30 JP JP02511758A patent/JP3122126B2/en not_active Expired - Fee Related
- 1990-08-30 WO PCT/EP1990/001446 patent/WO1991006383A1/en active IP Right Grant
- 1990-08-30 EP EP90913054A patent/EP0497780B1/en not_active Expired - Lifetime
- 1990-08-30 DE DE90913054T patent/DE59003171D1/en not_active Expired - Fee Related
- 1990-08-30 DK DK90913054.4T patent/DK0497780T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO9106383A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10427893B2 (en) | 2013-06-27 | 2019-10-01 | Ras Reinhardt Maschinenbau Gmbh | Handling device and bending installation and method for bending a part to be bent |
Also Published As
Publication number | Publication date |
---|---|
EP0497780B1 (en) | 1993-10-20 |
DE59003171D1 (en) | 1993-11-25 |
WO1991006383A1 (en) | 1991-05-16 |
DE3935658A1 (en) | 1991-05-02 |
JP3122126B2 (en) | 2001-01-09 |
CA2067732C (en) | 2000-02-15 |
JPH05500774A (en) | 1993-02-18 |
DK0497780T3 (en) | 1993-11-29 |
CA2067732A1 (en) | 1991-04-27 |
ES2046795T3 (en) | 1994-02-01 |
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