EP0873205A1 - Biegemaschine - Google Patents
BiegemaschineInfo
- Publication number
- EP0873205A1 EP0873205A1 EP97940053A EP97940053A EP0873205A1 EP 0873205 A1 EP0873205 A1 EP 0873205A1 EP 97940053 A EP97940053 A EP 97940053A EP 97940053 A EP97940053 A EP 97940053A EP 0873205 A1 EP0873205 A1 EP 0873205A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending machine
- clamping
- sole
- machine according
- energy
- 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
-
- 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
Definitions
- the invention relates to a bending machine, comprising a bending cheek, a first and a second clamping cheek for clamping a workpiece, one of which has interchangeably arranged clamping tool elements, at least one sole-movable clamping tool segment being mounted on an upper part and relative to it from a clamping position to a retracted position and reversely movable sole part.
- the sole-movable clamping tool segment has a hydraulic drive device, and is therefore continuously connected to hydraulic lines, which are always a hindrance when the same is inserted into the upper cheek or when the same is removed from the upper cheek.
- the invention is therefore based on the object of improving a bending machine of the generic type in such a way that the handling of such a sole-movable clamping tool segment can be carried out more easily.
- a lead-free drive device for the movement of the sole part is arranged in the upper part of the sole-movable clamping tool segment, in that the drive device has an energy absorption element, through which contact with an energy introduction element of an activation device arranged on the bending machine, drive energy can be supplied to the drive device.
- a particularly preferred solution provides that the energy introduction element extends over a positioning region of the sole-movable clamping tool segment and that the drive energy can be transmitted from the energy introduction element to the energy absorption element in any relative position of the two with respect to the sole-movable clamping element segment arranged within the positioning region.
- a particularly advantageous embodiment of the solution according to the invention provides that the clamping cheek each have a positioning area for one of the sole-movable clamping tool segments in opposite outer areas.
- a particularly simple and inexpensive solution provides for the energy introduction element to extend over the positioning area along the respective clamping cheek. The possibility is thus created in a simple manner of achieving an energy absorption element of a sole-movable clamping tool segment arranged within the positioning region with the energy introduction element.
- the energy introduction element in particular with the entire activation device, could be mounted independently of the mobility of the respective clamping cheek.
- the energy introduction element can be moved with the respective clamping cheek relative to the other clamping cheek. This creates a particularly simple, in particular space-saving, constructive solution for the arrangement of the energy introduction element.
- the energy introduction element can be moved relative to the respective clamping cheek in the direction of the energy absorption element of the sole-movable clamping tool segment. The contact between the energy introduction element and the energy absorption element can thus be produced in a particularly simple manner.
- the energy introduction element as an electrical contact rail and to transmit electrical energy to the drive device by contact with the energy absorption element.
- a structurally particularly simple and also inexpensive solution provides that mechanical energy can be transferred to the energy absorption element with the energy introduction element, since in particular the transmission of mechanical energy offers constructive advantages over the transmission of electrical energy in the case of such a machine tool, which for example when considering the safety aspects is recognizable.
- the transmission of the drive energy between the energy introduction element and the energy absorption element by mechanical means could take place in a wide variety of ways. For example, it would be conceivable to transfer the energy by a rotary movement or a pulling movement.
- a particularly advantageous embodiment provides that the energy introduction element transmits the drive energy to the energy absorption element by pressure on it.
- the energy introduction element transmits the drive energy to the energy absorption element by pressure on it.
- a particularly advantageous solution of the bending machine according to the invention provides, however, that the energy introduction element actuates the energy absorption element synchronously with the closing movement of the clamping cheeks.
- This solution has the advantage that, with a suitable design of the drive device, the movement of the sole part can be synchronized with the closing movement of the clamping cheeks.
- This synchronous actuation of the energy absorption element via the energy introduction element could also be achieved by suitable control of an actuator in synchronization with the closing movement of the clamping cheeks.
- the energy introduction element can be actuated by an actuating lever which detects a relative movement of the clamping cheeks.
- the relative movement of the clamping cheeks can be directly mechanically detected by the actuating lever and then the energy introduction element can be actuated synchronously via this actuating lever, so that no complex control is required, but a direct implementation of the relative movement of the clamping cheeks, which in any case takes place with great force, for actuation of the energy introduction element can take place.
- the aim was to move the sole part depending on the movement of the clamping cheeks, preferably in synchronism therewith, that is to say to carry out a movement of the sole part each time a workpiece is clamped.
- a particularly expedient solution provides for the drive device of the sole part to move the sole part away from the upper part into a position reaching under the sole part of the closest clamping tool segment in order to reach the retracted position.
- the sole part preferably no longer protrudes laterally beyond an outer side of the upper part, so that it is possible to retract into a sheet metal part, the shape of which requires gripping under an edge region, for example an edge-side or lateral double bend.
- a particularly favorable solution provides that the drive device moves the sole part along a screw-like path from the upper part to the retracted position.
- a screw-like path offers the advantage that it opens up the possibility of guiding the sole part in a defined manner in a confined space and, besides, of making the drive device space-saving and simple.
- the sole part is pivoted by 90 ° in the retracted position relative to the clamping position. Since only the provision of a screw-like path would, for example, entail the risk of the sole part colliding with the sole part of the closest clamping tool segment, it is preferably provided that the drive device, starting from the clamping position, linearly moves the sole part away from the upper part before moving the same on the screw-like path . Thus, the sole part can first be moved out of the clamping position without collision by the linear movement. Subsequently, either the screw-like movement according to the invention or another linear movement, for example leading obliquely to the side, can follow.
- the movement of the sole part according to the invention in the transition from the tensioned position to the retracted position and vice versa is particularly easy if the drive device comprises a guide link which defines a path of movement of the sole part between the tensioned position and the retracted position.
- the link guide in connection with the drive device according to the invention can be used in a structurally simple manner if it acts on a shaft carrying the sole part and thus directly transmits the movement forms defined by it to the sole part.
- an advantageous solution provides that an actuation of the energy absorption element of the drive device leads to an axial displacement of the shaft, which then again results in the desired ones in connection with the link guide Movement forms generated for the sole part. This creates a particularly mechanically simple solution for the drive device.
- the energy absorption element acts on the shaft via a transmission mechanism and thus the displacement of the shaft takes place over a greater distance than the actuation of the energy absorption element.
- a particularly favorable solution provides that interlocking interlocking elements and the sole part which are fixed in a rotationally fixed manner are connected to the upper part and to the sole part in the clamping position. These positive locking elements absorb forces to be transmitted from the sole part to the upper part and make it possible not to introduce these forces into the drive device, so that the latter can be designed to be correspondingly simple and therefore inexpensive.
- the form-locking elements comprise a conical fit
- the movement shape of the sole part according to the invention which, starting from the tensioned position, initially involves a linear movement and only in Connection to it provides a helical movement
- the provision of interlocking and in particular with a fit interlocking form-locking elements favors
- the conical shape simplifies the design of the guide of the sole part until the clamping position is reached, since a conical fit always comes into engagement even with insufficient initial positioning .
- Fig. 1 is a perspective, vertically sectioned
- Fig. 2 is a front view of the bending machine in
- FIG. 3 shows a partially enlarged representation in perspective of a sole-movable clamping tool segment in the retracted position (drawn in solid lines) and in the clamping position (shown in broken lines);
- FIG. 4 shows the sole-movable clamping tool segment according to FIG. 3 in the clamping position when clamping the sheet metal part immediately before bending;
- Fig. 5 is an enlarged view of a vertical
- Fig. 6 is a section along line 6-6 in Fig. 5;
- FIG. 7 shows an enlarged illustration of a section in area C in FIG. 1 with details of an activation device
- Fig. 8 is a section along line 8-8 in Fig. 7 and
- FIG. 9 is a side view in the direction of arrow D in FIG. 8.
- An embodiment of a bending machine according to the invention shown in Fig. 1, comprises a base frame 10, with which a lower beam 12 forming a clamping beam is firmly connected.
- the lower beam 12 carries a clamping tool 14 which is firmly connected to it and which extends over the entire width of the lower beam 12.
- a second clamping cheek is formed by an upper cheek, designated as a whole by 16, which extends parallel to the lower cheek 12 and is mounted on a rocker arm 18 which in turn can be rotated about an axis of rotation 20 relative to the base frame 10.
- the swing arm 18 is driven by a drive for the two clamping cheeks which is customary in bending machines.
- clamping tool segments 30 and 32 are provided on the upper beam (FIG. 2), which are interchangeably mounted on the upper beam 16 and thus open up the possibility of an upper beam 16
- the clamping tool segments 30 and 32 being assembled in such a way that sole parts 40 and 42 of the same extend over the entire width B of the sheet metal part 36 to be fixed and thus to clamp this over the entire width are able to.
- the clamping tool segments 30 form centerpieces which can have a constant or a variable width and each have a sole part 40 firmly connected to an upper part 44.
- the clamping tool segments 32 form corner pieces, the upper parts 46 of which have a smaller width than the sole parts 42, so that the sole parts 42 laterally protrude above the upper parts 46 and are able to engage in a double-bent edge region 48 of the sheet metal part 36, as in FIG. 2 shown. Since the upper cheek 16 is lowered in the direction of the lower cheek for tensioning the sheet metal part 36, the sole parts 42 protruding laterally beyond the upper parts 46 would collide with the double-folded edge region 48. For this reason, the sole parts 42, as illustrated again in FIGS. 3 and 4, are pivotable about an axis of movement 50 and movable in the longitudinal direction 52 thereof, so that, as shown in FIG.
- the sole part 42 is in a retracted position in which it engages with a front area 54 under the sole part 40 of the next adjacent clamping tool segment 30, while a side area 56 of the same points in the same direction as a front area 58 of the underlying underneath sole part 40 into a clamping position shown in broken lines in FIG. 3 and in FIG can be brought, in which the front area 54 of the sole part 42 extends parallel to the front area 58 of the closest sole part 40 and the side area 56 engages in the edge area 48 of the sheet metal part 36 and thereby protrudes laterally over the upper part 46 of the clamping tool segment 32.
- the sole part 42 is fixedly connected to a shaft running coaxially to the movement axis 50, which in turn is in a corresponding shaft channel 62 in the upper part 46 is guided and stored.
- This shaft 60 has a guide link 64 in the form of a groove worked into it, in which a link follower 66 fixedly mounted on the upper part 46 engages.
- the guide link 64 comprises on the one hand a screw-shaped section 68 and one parallel to the axis of movement 50 extending straight section 70, which adjoins an end of the helical section 68 facing the sole part 42.
- the upper part 46 is additionally provided with a wedge-shaped projection 76 which engages in a correspondingly shaped wedge-shaped groove 78 in the clamping position, the wedge-shaped projection 76 and the 'wedge-shaped groove 78 overlapping extend the entire width Bo of the upper part 46.
- the wedge-shaped projection 76 and the wedge-shaped groove 78 result in a rotationally fixed fixing of the sole part 42 relative to the upper part 46 in the clamping position, so that a force effect on the sole part 42 in the clamping position does not lead to a torque acting on the guide link 64 and the link follower 66.
- a shaft extension 80 of the same is provided with a flange 82, on which a fork lever 86 acts with its fork ends 88 via an intermediate axial bearing 84.
- the fork lever 86 is rotatably mounted about an axis 90 in the upper part 46 and carries at its end 92 opposite the fork ends 88 a roller 94, which in turn rests on an inclined surface 96 of a wedge body 100 which is linearly displaceable in the direction 98 and which is for this purpose in a linear guide 102 in the Upper part 46 is received and protrudes with a pressure surface 104 from the upper part 46.
- the wedge body 100, the fork lever 86, the shaft extension 80 with the flange 82 and the shaft 60 with the guide link 64 and the path follower 66 form a drive device 106.
- This drive device 106 can be activated by an activation device 108 explained below.
- the activation device 108 acts on the pressure surface 104 with an actuating slide 110 which, as shown in FIG. 7, is mounted on the upper cheek 16.
- an actuating slide 110 which, as shown in FIG. 7, is mounted on the upper cheek 16.
- stands 114 for the actuating slide 110 are provided on a cross member 112 of the upper beam 16 forming linear guides which the actuating slide 110 is movable in an actuating direction 120, which preferably runs parallel to the direction 98.
- an articulated piece 122 is connected in an articulated manner thereto.
- the articulated piece 122 is in turn connected to a lever 126 which is non-rotatably seated on an actuating shaft 124, so that the actuating slide 110 can be moved in the actuating direction 120 by rotating the actuating shaft 124.
- the actuating shaft 124 of the activation device 108 can be rotated on the one hand by means of an actuator 130, for example a compressed air cylinder, which acts on a lever arm 132 which is fixed on the actuating shaft 124, and on the other hand by means of an actuating lever 134, which, as shown in FIG. 8, on the side of the upper beam 16 lies and comes into contact with a pressure roller 138 when moving the upper beam 16 in the direction of the lower beam 12 on an anvil 136 fixedly connected to the lower beam 12.
- an actuator 130 for example a compressed air cylinder
- the sole part 42 remains in its retracted position until the sole part 42 is so deep that a collision with the double-folded edge region 48 can no longer take place. This is done by corresponding adjustment of the actuating lever 134 so that it only comes into contact with the anvil 136 when the sole part 42 is already so low that its side region 56 can no longer collide with the twice bent edge region 48.
- the sole part 42 remains in its retracted position.
- All clamping tool segments 30 and 32 each have an undercut 142 and a projection 144 in the area of their upper parts 44 and 46, which can be brought into engagement with a corresponding projection 146 or an undercut 148 of the upper cheek.
- the clamping tool segments 30 and 32 can be inserted into and removed from the upper cheek 16 in an insertion direction 150. Fixing of the clamping tool segments 30 and 32 is only non-positively, namely by means of a clamping device 152 acting transversely to the direction of insertion 150 on the respective upper parts 44 or 46 (FIG. 7).
- the actuating slide 110 only extends over a width Bb of the respective upper cheek, with a possible positioning range for a due to the position of the actuating slide and its width Bb Corner piece-forming clamping tool segment 32 is specified, within which, however, the respective clamping tool segment 32 can be positioned as desired, since the actuating slide 110 which extends with the width Bb can act on the pressure surface 104 of the wedge body 100 in any position (FIG. 8).
- Such an actuating slide 110 is preferably provided over the respective width Bb in the two mutually opposite outer regions of the upper cheek 16, so that a space F remains in between, into which a manipulator can be inserted.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19635106A DE19635106A1 (de) | 1996-08-30 | 1996-08-30 | Biegemaschine |
DE19635106 | 1996-08-30 | ||
PCT/EP1997/004186 WO1998008631A1 (de) | 1996-08-30 | 1997-08-01 | Biegemaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0873205A1 true EP0873205A1 (de) | 1998-10-28 |
EP0873205B1 EP0873205B1 (de) | 2004-02-25 |
Family
ID=7804134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97940053A Expired - Lifetime EP0873205B1 (de) | 1996-08-30 | 1997-08-01 | Biegemaschine |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0873205B1 (de) |
JP (1) | JPH11514586A (de) |
AT (1) | ATE260152T1 (de) |
DE (2) | DE19635106A1 (de) |
DK (1) | DK0873205T3 (de) |
ES (1) | ES2214636T3 (de) |
PT (1) | PT873205E (de) |
WO (1) | WO1998008631A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106077173B (zh) * | 2016-06-28 | 2017-11-07 | 重庆雄创建筑工程技术有限公司 | 钢板折弯装置 |
AT519221B1 (de) | 2016-12-06 | 2018-05-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Fertigungsanlage mit einem Klemmwerkzeug sowie Verfahren zur Anpassung einer Gesamtlänge einer Biegekante des Klemmwerkzeugs |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159224A (ja) * | 1984-12-29 | 1986-07-18 | Maru Kikai Kogyo Kk | プレスブレ−キの型長さ変換装置 |
JPH04361832A (ja) * | 1991-06-05 | 1992-12-15 | Murata Mach Ltd | 板材折曲機 |
US5313814A (en) * | 1992-10-27 | 1994-05-24 | Kabushiki Kaisha Komatsu Seisakusho | Bending machine |
IT1267472B1 (it) * | 1994-10-27 | 1997-02-05 | Sapim Amada Spa | Pressa piegatrice per l'esecuzione di pieghe a c sui quattro bordi di un pannello di lamiera. |
-
1996
- 1996-08-30 DE DE19635106A patent/DE19635106A1/de not_active Ceased
-
1997
- 1997-08-01 DK DK97940053T patent/DK0873205T3/da active
- 1997-08-01 PT PT97940053T patent/PT873205E/pt unknown
- 1997-08-01 DE DE59711341T patent/DE59711341D1/de not_active Expired - Lifetime
- 1997-08-01 AT AT97940053T patent/ATE260152T1/de active
- 1997-08-01 ES ES97940053T patent/ES2214636T3/es not_active Expired - Lifetime
- 1997-08-01 JP JP10511218A patent/JPH11514586A/ja active Pending
- 1997-08-01 EP EP97940053A patent/EP0873205B1/de not_active Expired - Lifetime
- 1997-08-01 WO PCT/EP1997/004186 patent/WO1998008631A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9808631A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2214636T3 (es) | 2004-09-16 |
DE19635106A1 (de) | 1998-03-05 |
PT873205E (pt) | 2004-06-30 |
ATE260152T1 (de) | 2004-03-15 |
JPH11514586A (ja) | 1999-12-14 |
DK0873205T3 (da) | 2004-06-21 |
WO1998008631A1 (de) | 1998-03-05 |
EP0873205B1 (de) | 2004-02-25 |
DE59711341D1 (de) | 2004-04-01 |
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