EP0463132A1 - Machine for bending rod-shaped material. - Google Patents
Machine for bending rod-shaped material.Info
- Publication number
- EP0463132A1 EP0463132A1 EP91901448A EP91901448A EP0463132A1 EP 0463132 A1 EP0463132 A1 EP 0463132A1 EP 91901448 A EP91901448 A EP 91901448A EP 91901448 A EP91901448 A EP 91901448A EP 0463132 A1 EP0463132 A1 EP 0463132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- housing
- machine according
- holder
- counter
- 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
- 238000005452 bending Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
Definitions
- the invention relates to a bending machine for bending rod-shaped material in two directions, with a rotatable bending plate, which is provided with a central bending mandrel and an eccentrically arranged bending tool, and with a stationary, adjustable counter-holder.
- a bending machine of this type which is suitable for bending wires, rods, pipes or the like. is known from DE-OS 22 21 185.
- the counter holder is inserted into fixed perforated strips, which can be moved in their longitudinal direction according to the diameter of the material to be bent.
- the bending plate with its bending tools is arranged between the perforated strips.
- the stationary counterholder and the eccentrically arranged bending tool are on one side and the central mandrel on the opposite side of the material to be bent.
- the material to be bent must be arranged on the opposite side of the central mandrel and the counter-holder and the eccentric bending tool must be brought to the other side of the material to be bent.
- the counterholder is manually inserted into the corresponding hole in the perforated strip and this may also have to be adjusted in its longitudinal direction.
- the disadvantage of this construction is that a considerable effort is required to set up the counter-holder and errors cannot be ruled out by manual repositioning and setting.
- a bending machine is also known from DE-OS 38 16 005, in which a pair of movable counter-supports are mounted on a stationary frame which supports the bending plate. Each counter-holder can be pivoted from a working position into a rest position by means of a drive means. Depending on the bending direction, a counterholder in the working position acts with the Bending tools together, whereas the other counter-holder is pivoted through 90 ° into the rest position in order not to hinder the bending movement of the bending tool. When the diameter of the material to be bent is changed, the counterholders are moved with the aid of drive elements in the direction perpendicular to their stop surface in the working position.
- This construction has the disadvantage of a considerable effort for the drive and the control of the two counterholders, as well as the lack that due to the fixed predetermined working position of the counterholders relative to the bending elements only the ends of the rods can be bent in different directions.
- the object of the invention is to provide a bending machine of the type specified at the outset, which avoids the disadvantages of the known designs and enables the counter-holder to be independently adjusted to the material to be bent without aids and regardless of the bending direction.
- the bending machine according to the invention is characterized in that the bending plate is mounted coaxially to the housing in a housing which is rotatably mounted about an axis in a stationary frame, and is rotatable by means of a rotary drive device mounted on the housing, and in that the counter-holder is arranged eccentrically on the housing and can be applied to the material to be bent by means of the rotary drive device.
- the housing with the aid of a swivel arm, which is mounted on a bearing journal of the housing and can be actuated by an associated swivel drive device, for roughly positioning the counter-holder in a position predetermined by the respective bending direction is adjustable.
- the bending plate is rotatably mounted on the side of the bearing pin of the housing facing away from the swivel arm.
- FIG. 1 shows a schematic section through an exemplary embodiment of a bending machine according to the invention
- Fig. 2 in plan view the arrangement of the bending tools and the counter-holder in the machine of FIG. 1 for a counterclockwise bending direction
- Fig. 3 shows the arrangement of the bending tools and the counter holder in a further embodiment of a bending machine according to the invention.
- a cylindrical housing 1 can be seen, which is mounted via a bearing pin 2 and a bearing 3 rotatable about an axis XX in a fixed, schematically indicated frame 4.
- a bending plate 5 is rotatably mounted about the axis XX coaxially to the housing by means of a hub 6 and via a bearing 7 on a journal 8 connected to the journal 2.
- the bending plate 5 has on its upper side a diagonally running groove 9, into which a bending strip 10 is interchangeably inserted, which is at the same time attached to an eccentrically arranged support pin 11 of the bending plate 5.
- the bending strip 10 carries a central bending mandrel 12, the axis of which coincides with the axis XX, and an eccentrically arranged bending body 13 which surrounds the support pin 11.
- the bending body 13 has two bending surfaces 14 angled to one another (cf. FIG. 2), which form the contact surfaces for the material to be bent during bending.
- the bending body 13 can, however, also be cylindrical.
- the bending mandrel 12 and the bending body 13 are adapted in their dimensions and in their mutual distance to the dimensions of the material to be bent.
- the working surfaces of the bending mandrel 12 and the bending body 13 can be roughened, for example knurled, to increase the friction between these surfaces and the material to be bent.
- the housing 1 also carries an interchangeable counter-holder 15 with slightly curved, mutually angled stop surfaces 16, on which the material to be bent is supported during the bending process.
- the counter-holder 15 can also be cylindrical in the context of the invention and rotatably attached to the housing 1.
- the counter-holder 15 can be exchanged for another one, or a counter-holder shoe 17 with a dot-dash line in FIG. 2 can be put over the original counter-holder 15.
- a rotary drive motor 18 is mounted on the housing 1, the drive pinion 19 of which engages in a toothed ring 20 provided on the hub 6 of the bending plate 5.
- a rotary encoder 21 provided with a measuring wheel 22 is also fastened to the housing 1, the measuring wheel 22 engaging in the toothed ring 20 without play and allowing the angle of rotation between the bending plate 5 and the housing 1 to be measured.
- a swivel arm 24 is fastened, via which the housing 1 with the aid of a swivel drive device, e.g. is designed as a hydraulic working cylinder 25, about the axis X-X according to the double arrow P. (Fig. 3) is pivotable.
- Fig. 2 the bending tools 12, 13 and the counter-holder 15 are each shown in their starting position for bending a wire D counterclockwise.
- the wire D is eccentrically guided in the direction of the arrow P with the help of clamping jaws, not shown, parallel to a central line SS with play between the bending mandrel 12 and the bending body 13.
- the counter holder 15 is located on the same side of the wire as that Bending body 13.
- the swivel drive device 25 is switched off and the rotary drive motor 18 is set in motion by a control device (not shown), as a result of which the housing 1 with the counter-holder 15 rotates in accordance with the double arrow P "until the counter-holder 15 bears against the wire D, as a result of which Rotational movement of the housing 1 is ended.
- the rotary drive motor 18 is then driven in the same direction, whereby the bending plate 5 opposite to the voher whon rotation of the housing 1 as long as according to the Doppel ⁇ arrow P 3 is rotated until the bending body 13 surface with its Biege ⁇ 14 rests on wire D and this is firmly clamped between the mandrel 12 and the bending body 13. If the rotary drive motor 18 is then actuated further in the same direction, the bending plate 5 continues to rotate in accordance with the double arrow P_ and thereby bends the wire D around the bending mandrel 12.
- the relative rotation between the stationary housing 1, which is supported on the wire D by means of the counter-holder 15, and the rotating bending plate 5 with the aid of the rotary angle sensor 21 and thus the bending angle of the wire D are continuously measured.
- This measured value is fed to the control device, which drives the rotary drive motor 18 until the preselected target bending angle is reached.
- the wire D remains clamped between the mandrel 12 and the bending body 13 and slides according to the arrow P. on the smooth abutment surface 16 of the counter holder 15.
- the swivel drive device 25 and the rotary drive motor 18 are activated in the opposite direction , whereby the bending plate 5 and the housing 1 each rotate in the opposite direction such that the counter-holder 15 and the bending body 13 move towards each other, detach from the wire D and return to their starting position.
- the wire By means of the clamping jaws, the wire can now be advanced in the direction of arrow P. and a further bend in the same direction, as described above, be made. If, however, a clockwise bend, ie an opposite bend is desired, the wire to be bent is lifted from the bending plate 5 parallel to the axis XX with the help of the clamping jaws so that the counter-holder 15 and the bending body 13 are moved under the wire can and the wire can be lifted over the mandrel 12 in a position beyond the mandrel 12.
- the housing 1 and thus the counter-holder 15 are brought into a position with the aid of the swivel arm 24, which is a mirror image of the central line S-S compared to the position shown in FIG. 2. While the housing 1 is held in this position with the aid of the swivel arm 24, the bending plate 5 is then rotated by actuating the rotary drive motor 18 until the bending body 13 comes into a position which is relative to the position shown in FIG. 2 with respect to the central line SS is mirror image.
- the wire is now lifted over the bending mandrel 12 with the aid of the clamping jaws and lowered perpendicular to the surface of the bending plate 5 between the bending mandrel 12 and the bending body 13.
- the counter-holder 26 consists of two fork-like parts 27 and 28 which are connected to the housing 1 and which can be replaced, between which the wire D to be bent is inserted in the direction of the arrow P 1 by means of clamping jaws, not shown.
- the counter holder 26 is designed in such a way that on the one hand all possible diameters of the material to be bent can be accommodated, on the other hand the external dimensions of the counter holder Allow bends with the maximum possible bend angle of approximately 180 °.
- the bending slide 30 is, according to the double arrow P c, displaceably arranged in the groove 9 of the bending plate 5 with the aid of drive elements (not shown) and can be fixed on the bending plate 5 by means not shown.
- the original, central bending mandrel 12 reaches a new position 29 'and thereby becomes the eccentrically arranged bending pin, whereas the original, eccentric bending pin 29 now takes the position of the central bending mandrel 12 and also takes over its function.
- the bending slide 30 is displaced synchronously with the rotation of the housing 1 in order to be able to transfer the wire D securely into the new starting position D '.
- the Brackets 15 and 26 as well as the central bending mandrel 12 and the eccentric bending tools 13, 29 can be adjusted in height to the maximum possible number and the diameter of the materials to be bent.
- the bending machine according to the invention makes it possible to bend arcs with a radius of curvature that is greater than the radius of the mandrel 12. Since bending of the wire up to the radius of curvature of the bending mandrel 12 occurs only when the bending body 13 or the bending bolt 29 rotates by a certain amount, the bending that occurs at smaller angles of rotation is correspondingly less.
- any radius of curvature can be achieved during bending.
- the entire bending process is divided into several partial bends with corresponding partial bending angles, ie partial angles of rotation of the bending tools 13 and 29.
- the bending tools 13 and 29 are rotated back into the starting position, the wire D is advanced with the help of the clamping jaws by a partial feed step in the direction of the arrow P 1 and a further bending step is carried out.
- the size of the partial feed step is given by the quotient of the total feed for the production of the finished sheet and the number of individual partial bends.
- the bending processes and the feed of the material are repeated according to the number of partial bends until the desired arc is completed. In the bending process explained above, the tensioning device and the rotary drive device are thus actuated alternately by the central control device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Wire Processing (AREA)
Abstract
Machine à cintrer pour le cintrage de matériau en forme de barres dans deux directions, comportant un plateau de cintrage tournant (5) muni d'un mandrin de cintrage central (12) ainsi que d'un outil de cintrage (13) disposé de manière excentrique, ainsi qu'un serre-pièce (15; 17) réglable et stationnaire. Le plateau de cintrage est logé dans un carter (1), lequel tourne dans un chassis-support stationnaire (4) autour d'un axe (X-X), coaxialement audit carter et de manière rotative au moyen d'un dispositif d'entraînement en rotation (18) monté sur le carter. Le serre-pièce est disposé de manière excentrique sur le carter et peut être appliqué au moyen du dispositif d'entraînement en rotation (18) au matériau à cintrer.Bending machine for bending bar-shaped material in two directions, comprising a rotating bending plate (5) with a central bending mandrel (12) and a bending tool (13) arranged so eccentric, as well as an adjustable and stationary clamp (15; 17). The bending plate is housed in a housing (1), which rotates in a stationary support frame (4) about an axis (XX), coaxially with said housing and in a rotatable manner by means of a drive device in rotation (18) mounted on the housing. The clamp is eccentrically disposed on the housing and can be applied by means of the rotary drive device (18) to the material to be bent.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0006190A AT399676B (en) | 1990-01-12 | 1990-01-12 | BENDING MACHINE FOR BENDING ROD-SHAPED MATERIAL |
AT61/90 | 1990-01-12 | ||
PCT/AT1991/000001 WO1991010519A1 (en) | 1990-01-12 | 1991-01-02 | Machine for bending rod-shaped material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0463132A1 true EP0463132A1 (en) | 1992-01-02 |
EP0463132B1 EP0463132B1 (en) | 1994-12-14 |
Family
ID=3480493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91901448A Expired - Lifetime EP0463132B1 (en) | 1990-01-12 | 1991-01-02 | Machine for bending rod-shaped material |
Country Status (8)
Country | Link |
---|---|
US (1) | US5203195A (en) |
EP (1) | EP0463132B1 (en) |
JP (1) | JPH04504820A (en) |
AT (2) | AT399676B (en) |
DE (1) | DE59103855D1 (en) |
DK (1) | DK0463132T3 (en) |
GR (2) | GR920300043T1 (en) |
WO (1) | WO1991010519A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0790276B2 (en) * | 1993-05-24 | 1995-10-04 | サンテクス株式会社 | Bending method |
WO1995000266A1 (en) * | 1993-06-17 | 1995-01-05 | Suehiro Mizukawa | Band plate bending apparatus |
IT1262256B (en) * | 1993-12-22 | 1996-06-19 | Piegatrici Macch Elettr | CONTRAST PIN OF A FOLDING MACHINE |
KR0182069B1 (en) * | 1995-06-22 | 1999-04-01 | 송병준 | Bent-up system of cutting blade |
US20070095006A1 (en) * | 2005-11-01 | 2007-05-03 | Konersmann Ronald D | Lightweight portable concrete enclosure and associated method of construction |
IT1391476B1 (en) * | 2008-10-28 | 2011-12-23 | Cml Int Spa | CURVATURI MACHINE WITH PERFECT TRANSMISSION OF THE MOTORCYCLE TO THE MATRIX |
US8631674B2 (en) * | 2008-12-17 | 2014-01-21 | Aim, Inc. | Devices, systems and methods for automated wire bending |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE525244C (en) * | 1930-03-11 | 1931-05-21 | Anton Wagenbach | Bending machine for iron bars |
CH363545A (en) * | 1958-05-09 | 1962-07-31 | Suter Fa Alois | Bending machine |
DE1096168B (en) * | 1958-07-29 | 1960-12-29 | Peddinghaus Paul Ferd Fa | Abutment with sliding roller for the bending device of a concrete iron bending machine |
DE1920265A1 (en) * | 1969-04-22 | 1970-11-12 | Peddinghaus Dr C Ullrich | Bending machine for bars, wires and profiles |
DE1935100C3 (en) * | 1969-07-10 | 1980-07-31 | Centralnyj Nautschno-Issledovatelskij Institut Technologii Maschinostroenija, Moskau | Process for pipe bending and equipment for carrying out the process |
FR2091930A2 (en) * | 1970-05-13 | 1971-01-21 | Peddinghaus Carl Ullrich Dr | Recovery of nickel from nickel ammonium - carbonate |
DE2215490A1 (en) * | 1972-03-29 | 1973-10-04 | Peddinghaus Carl Ullrich Dr | BENDING MACHINE FOR CONCRETE STEEL BARS IN PARTICULAR |
DE2221185A1 (en) * | 1972-04-29 | 1973-11-08 | Krupp Gmbh | STEEL BENDING MACHINE |
DE2514369A1 (en) * | 1975-04-02 | 1976-10-14 | Peddinghaus Carl Ullrich Dr | Reaction roller location on bar bending machine - has eccentric roller bush for fine adjustment between hole and centres |
DE2832980C2 (en) * | 1978-07-27 | 1984-11-08 | Rigobert Dipl.-Ing. 5000 Köln Schwarze | Loading device for a pipe bending machine |
DE2927753A1 (en) * | 1979-07-10 | 1981-02-05 | Schwarze Rigobert | Pipe bending machine feeder and discharge unit - has pendulum, fastened turnable to horizontal pivot |
DE3033300A1 (en) * | 1980-09-04 | 1982-04-01 | Rigobert Dipl.-Ing. 5000 Köln Schwarze | PIPE BENDING MACHINE |
AT378135B (en) * | 1983-05-18 | 1985-06-25 | Evg Entwicklung Verwert Ges | BENDING MACHINE FOR WIRE OR TAPE-SHAPED MATERIAL |
DE3416133A1 (en) * | 1984-05-02 | 1985-11-07 | Bernd 7530 Pforzheim Schüssler | Apparatus for bending tubular material or material in strand form, in particular wire |
DE3546448A1 (en) * | 1985-03-12 | 1986-09-25 | Alpha Maschinenbau AG, Zürich | Bending apparatus |
IT210698Z2 (en) * | 1987-05-11 | 1989-01-11 | Oscam Spa | MACHINE FOR BENDING ROUND BARS OR SIMILAR METAL ELEMENTS |
IT1235176B (en) * | 1989-01-18 | 1992-06-23 | Piegatrici Macch Elettr | UPRIGHT MOBILE SHEAR, FOLDING GROUP AND TAIL BENDING PROCEDURE. |
-
1990
- 1990-01-12 AT AT0006190A patent/AT399676B/en active
-
1991
- 1991-01-02 AT AT91901448T patent/ATE115446T1/en not_active IP Right Cessation
- 1991-01-02 DE DE59103855T patent/DE59103855D1/en not_active Expired - Fee Related
- 1991-01-02 JP JP3501793A patent/JPH04504820A/en active Pending
- 1991-01-02 EP EP91901448A patent/EP0463132B1/en not_active Expired - Lifetime
- 1991-01-02 US US07/761,824 patent/US5203195A/en not_active Expired - Fee Related
- 1991-01-02 DK DK91901448.0T patent/DK0463132T3/en not_active Application Discontinuation
- 1991-01-02 WO PCT/AT1991/000001 patent/WO1991010519A1/en active IP Right Grant
-
1992
- 1992-08-26 GR GR92300043T patent/GR920300043T1/en unknown
-
1995
- 1995-02-01 GR GR950400183T patent/GR3014919T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9110519A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK0463132T3 (en) | 1995-01-23 |
GR3014919T3 (en) | 1995-05-31 |
GR920300043T1 (en) | 1992-08-26 |
WO1991010519A1 (en) | 1991-07-25 |
DE59103855D1 (en) | 1995-01-26 |
EP0463132B1 (en) | 1994-12-14 |
AT399676B (en) | 1995-06-26 |
JPH04504820A (en) | 1992-08-27 |
ATA6190A (en) | 1994-11-15 |
ATE115446T1 (en) | 1994-12-15 |
US5203195A (en) | 1993-04-20 |
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