CN101837400A - Be used to make the bullodozer of sheet bending - Google Patents
Be used to make the bullodozer of sheet bending Download PDFInfo
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- CN101837400A CN101837400A CN201010134498A CN201010134498A CN101837400A CN 101837400 A CN101837400 A CN 101837400A CN 201010134498 A CN201010134498 A CN 201010134498A CN 201010134498 A CN201010134498 A CN 201010134498A CN 101837400 A CN101837400 A CN 101837400A
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- 238000005452 bending Methods 0.000 title claims abstract description 42
- 235000013351 cheese Nutrition 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 19
- 210000003746 feather Anatomy 0.000 claims description 6
- 229940020445 flector Drugs 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 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
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to a kind of bullodozer that is used to make the sheet metal bending, wherein, at least one stop part is arranged in each described groove, and each described stop part comprises: the first wedge shape part, and it has first end at first edge that is fixed to described groove and second end that forms first surface; And the second wedge shape part, it has first end at second edge that is fixed to described groove and second end that forms first surface; And the other parts that the first surface of at least one the wedge shape part in the described first wedge shape part and the second wedge shape part has with respect to described surface are the central portion of cheese or projection, so that substantially in the contact that realizes on the described central portion between described first wedge shape part and the described second wedge shape part.
Description
Technical field
The present invention relates to a kind of bender or " bullodozer " with workbench of controlled-deformation.
Background technology
This lathe of bender as known type.As shown in Figure 1, this lathe comprises lower table 12 and the upper table 14 that can move with respect to lower table 12.Usually, lower table 12 is for what fix, and upper table 14 is suitable for the actuator V at end 14a that acts on upper table 14 and 14b
1And V
2Driving under move towards lower table 12.Usually, the free edge 12a of lower table 12 is equipped with the fastener 16 that is used for fastening crooked die (bending matrices) 18.Similarly, the edge 14c of upper table 14 is equipped with the fastener 20 that is used for fastening crooked punch (bending punch) 22.
On the crooked die 18 of lower table 12, place sheet metal or laminate F.The length of this sheet material F can in very large range change according to circumstances.At actuator V
1And V
2The driving of piston under, the punch 22 that is installed on the upper table 14 moves towards the sheet material on the die that places lower table.In case punch 22 contacts with sheet material F, along with punch gos deep into sheet material, the power that acts in the sheet material begins to increase, and is initial in elastic range, subsequently in plastic range, thereby make the sheet material permanent bend.
Because this power is the actuator V by the end that acts on workbench
1And V
2And putting on upper table, the linear load that therefore is distributed between two ends of workbench is corresponding along the distortion of spill camber line with upper table, and the maximum distortion place is close to the midplane of workbench.This means that in order to realize bending, when bending operation finished, the amount that the central portion of punch gos deep into sheet material was littler than the end.If bending is carried out on die, and this die itself is keeping good glacing flatness in BENDING PROCESS, then the result will be, the bent angle of the central portion of the workpiece that is obtained is greater than the bent angle of its end.That yes is unacceptable for this result.
In order to remedy this defective, the distortion of various schemes to take place by the edge that uses various device control workbench proposed, make the flexural deformation of curved workpieces basic identical on its whole length.
Routinely, these schemes need be provided with groove, and than groove 24,26 as shown in Figure 1, these grooves are formed in the lower table 12 symmetrically with respect to the midplane P ' P of bullodozer.And, between these grooves 24,26, defining the central area 28 of lower table 12, this central area does not have groove and length is b, and the length of each groove in two grooves 24 and 26 is a.
Utilize the groove 24 and 26 of general type, promptly reserve the unslotted section 28 that length is b between groove 24 and groove 26, the distortion of almost parallel is realized at the edge of upper table 14 and lower table 12.This has guaranteed to realize suitable bending.Yet, only when the length for the treatment of crooked metal sheet or sheet material F equals the total length of lower table 12 or upper table 14 substantially, can realize this result.By contrast, when the length of sheet material F during less than the total length of lower table 12 or upper table 14, lower table 12 and upper table 14 be deformed into spill.
Except being difficult to provide the length that is shorter in length than or equals on the contrary the workbench 12,14 of bullodozer of so a kind of no matter this sheet material or sheet material, all be adapted such that and treat that crooked metal laminates sheet material or sheet material F on the whole length substantially equably outside the bullodozer of distortion, also exist with bending force when travelling table 14 put on stationary work-table 12 top edge 24 ", 26 " and described power by the feather edge 24 of described groove 24,26 ', the 26 ' top edge 24 ", 26 " that absorbs time slot 24,26 is out of shape relevant difficulty.
Summary of the invention
The objective of the invention is to make above-mentioned two problems up by proposing in each groove 24,26, at least one stop part to be set, described stop part is made of two parts or wedge shape part, described parts or wedge shape part have the first surface of the respective edges that is fastened to groove and are suitable for the roughly mutual local second surface that contacts at the center of wedge shape part, guarantee that in this way bending force is delivered to the feather edge of groove efficiently from the top edge of groove.
Therefore, the invention provides a kind of bullodozer that is used to make at least one sheet metal bending, described bullodozer comprises:
Have the upper table and the lower table with the top edge of carrying second flector of the feather edge of carrying first flector, described upper table and lower table can move relative to each other, so that bending force is put on the sheet material;
Described bullodozer has vertical midplane, one of them has two grooves that run through its whole thickness described upper table and lower table, two grooves are symmetrical arranged with respect to described midplane, each groove has: first edge and second edge, with first openend that opens wide at the lateral edges place of described workbench, and blind end;
Wherein,
At least one stop part is arranged in each groove, and each stop part comprises: the first wedge shape part, and it has first end at first edge that is fixed to described groove and second end that forms first surface; And the second wedge shape part, it has first end at second edge that is fixed to described groove and second end that forms first surface; And
The other parts that the first surface of at least one the wedge shape part in the described first wedge shape part and the second wedge shape part has with respect to described surface are the central portion of cheese or projection, so that substantially in the contact that realizes on the described central portion between described first wedge shape part and the described second wedge shape part.
Wording " is fixed to the first/the second edge " and is used to express the wedge shape part of being discussed and is connected to first or second edge, should be understood that, described wedge shape part with respect to the edge of described groove for movably.
The further feature of bullodozer of the present invention is described hereinafter:
Advantageously, the second surface of the first surface of the described first wedge shape part and the described second wedge shape part all has the central portion that the other parts with respect to described first surface separately are cheese or projection;
In one embodiment, the first surface of the first surface of the described first wedge shape part and/or the described second wedge shape part is a convex surface;
In one embodiment of this invention, the first surface of a described wedge shape part is concave surface, and the first surface of another described wedge shape part is convex surface;
In one embodiment of this invention, the first surface of the first surface of the described at least first wedge shape part and/or the described second wedge shape part is a sphere portion;
Advantageously, described two grooves have constant height at least in the zone of described stop part, and with under the situation that does not apply the bending force that makes described sheet metal F bending, described first edge is parallel with described second edge;
Advantageously, the first surface of described two wedge shape parts tilts with respect to the parallel edge of described two grooves;
Preferably, the first surface of described two wedge shape parts tilts with certain gradient, and described gradient is in respect to the axis parallel with the edge of described two grooves or plane in 1% to 40% the scope, preferably is in 5% to 10% the scope;
In one embodiment of this invention, the first surface of the first surface of the described at least first wedge shape part or the described second wedge shape part has the inclined-plane circumference that a plurality of and described central portion links to each other;
Substantially equal the wedge shape part of 80mm for length, in the scope that described central portion is in 0.05mm to 0.25mm with respect to the height or the projection of the other parts of described first surface;
Advantageously, described wedge shape part is installed on a plurality of support members that link to each other with a corresponding edge of described two grooves; At least one described support member can laterally move, and promptly moves along the axis parallel with the parallel edge of described groove, and movably described support member is installed on the described parallel edge;
In a kind of feasible program provided by the invention, described two wedge shape parts are skew toward each other laterally, promptly is offset toward each other along the axis parallel with the parallel edge of described groove;
In a kind of feasible program provided by the invention, under the situation that does not apply the bending force that makes described sheet metal F bending, has the gap between described first wedge shape part and the described second wedge shape part; And
Advantageously, described bullodozer of the present invention has a plurality of stop parts, and described stop part is arranged near described midplane P ' P in the corresponding described groove symmetrically.
Description of drawings
After having read the following explanation of the preferred embodiments of the present invention being carried out by non-limiting example, further feature of the present invention and advantage more clearly display.The present invention is with reference to the accompanying drawing of back, wherein:
Fig. 1 shows a bullodozer, and this bullodozer has each side that is positioned at midplane P ' P and two grooves that extend from relative both sides;
Fig. 2 is the schematic diagram that the embodiment of stop part of the present invention is shown, and this stop part is made of two wedge shape parts, and a wedge shape part is fastened to the top margin of groove 24 or 26, and another wedge shape part is fastened to the base of groove 24 or 26;
Fig. 3 is the schematic diagram of two stop parts, and described stop part is provided with the electronic control system that is used to control the gap width related with two stop parts;
Fig. 4 to Fig. 7 is the schematic diagram of the embodiment of stop part of the present invention, and described stop part is made of two wedge shape parts that initially are in contact with one another;
Fig. 8 is the side view of the wedge shape part of stop part of the present invention;
Fig. 9 to Figure 12 shows the first surface of wedge shape part of stop part of the present invention or the different embodiment of contact surface;
Figure 13 schematically shows when bending force and puts on sheet metal F when producing contact, passes the field of force of wedge shape part of stop part of the present invention or the power F between pressure field and the wedge shape part
0
Figure 14 is the stereogram of wedge shape part, and the first surface of this wedge shape part or contact surface are made of three parts; And
Figure 15 is the side views in the cross section of two wedge shape parts of placing up and down, and described wedge shape part is identical with wedge shape part among Figure 14.
The specific embodiment
Fig. 2 is the cutaway view of two wedge shape parts 28,29 of stop part 27 of the present invention.Two wedge shape parts 28,29 have first contact surface 28 ', 29 ' separately, before applying bending force F0, exist as Fig. 5 and gap J shown in Figure 15 between two wedge shape parts.
Each wedge shape part 28,29 be installed in corresponding groove 24 and 26 respective edges 24 ', 26 ' or the corresponding support member 40,41 that is connected of respective edges 24 ", 26 " on.Each wedge shape part 28,28 ', 29,29 '/effect of stop part 27 be control each groove 24,26 when apply bending force edge 24 ', the degree that moves relative to each other of 24 " with 26 ', 26 ".Edge 24 by control flume 24 or 26 ', the degree that moves relative to each other of 24 " and 26 ', 26 ", the distortion of top edge 24 " and 26 " that can control flume 24,26, and then the distortion of the top edge 12a of control lower table 12.
At least one support member in the support member 40 or 41, and alternatively, two support members 40 and 41 all be mounted to along with the parallel edge 24 of the groove 24,26 that support member is installed ', 26 ' and 24 ", 26 " parallel axis laterally move.Being depicted as in Fig. 2 and Fig. 3 illustrates in the example of the present invention, and only support member 40 is suitable for moving by actuator group 60, and support member 41 is fastened to the groove edge 24 ", 26 " of lower table 12.As shown in Figure 3, described support member 40 moves by actuator group 60, and described actuator group is connected to moveable support 10 by pitman arm 61.Actuator group 60 is controlled by RCU (not shown in the accompanying drawings).In order to apply bending force F0, support member 40 and wedge shape part 29 are moved by driven by power, thereby can regulate the position of at least one wedge shape part 29 with respect to wedge shape part 28.This adjusting defines the value of gap J, should be understood that, (before applying bending force F0) can not provide any gap to the initial adjustment of the relative position of wedge shape part 28,29, so that wedge shape part 28,29 adjoins each other.The relative position of gap J between the wedge shape part 28,29 or wedge shape part 28,29 can be adjusted in 0.01 millimeter the scope by actuator group 60.
Nature can provide actuator group 60 or unique driving mechanism, and support member 41 and wedge shape part 28 are moved.As example, Fig. 8 shows wedge shape part 28,29, can see that wherein ( hole 71,72 is in sight in the end in the hole 71,72,73 of being carved with screw thread, the hole 73 that is positioned at adjacent surface simultaneously is represented by dotted lines along the thickness of wedge shape part), these holes are designed to be able to make wedge shape part 28 or the 29 conventional mechanical devices by for example screw or screw rod to be fastened to moveable support 40 or securing supports 41.
In order to allow only limited laterally moving, support member 40 is provided with linearly extended slit or hole 62, makes moveable support 40 along its axis that moves with qualification, is provided with the slit directing pin 63 that is suitable for assembling described slit 62 in this slit or hole.The moving of support member 40 and wedge shape part 29 is parallel to groove 24,26 under ideal state edge 24 ', 26 '.Should be noted in the discussion above that advantageously, at least at wedge shape part 28,29/ stop part 27 places, the edge 24 of each groove 24,26 ', 24 " and 26 ', 26 " are parallel to each other.
Advantageously, the first surface 28 of each wedge shape part 28,29 ', 29 ' with respect to described axis or with respect to the parallel edge 24 of groove 24,26 ', 26 ' and the plane of 24 ", 26 " have gradient.The first surface 28 of each wedge shape part 28,29 ', 29 ' gradient in 1% to 30% scope, this gradient depends on the material that forms wedge shape part 28,29, perhaps depend on or rather the contact surface 28 that is used to form each wedge shape part 28,29 ', 29 ' the coefficient of friction of material.Therefore, as example, the gradient that should be noted in the discussion above that each the wedge shape part 28,29 shown in Fig. 2 and Fig. 3 is in 2% to 10% scope, and for for example Fig. 6, Figure 13 or wedge shape part 28,29 shown in Figure 14, described gradient is in 10% to 30% scope.The gradient that should also be noted that the wedge shape part 28,29 that adjoins each other can be identical or different slightly.
In a critical aspects of the present invention, the first surface of each wedge shape part 28,29 or contact surface 28 ', 29 ' at least one of them be provided with the central portion 30,31 of cheese or projection, with substantially in the contact that realizes on described central portion 30 or 31 between the first wedge shape part 28 and the second wedge shape part 29.
The central portion 30,31 of this cheese or projection can be different shape, also can exist only on one of them of two wedge shape parts 28 or 29, or be present on two wedge shape parts 28 and 29.In addition, as illustrated among each embodiment below, because each first surface 28 of wedge shape part 28,29 ', 29 ' cheese portion or the shape of lug boss 30,31, the contact between the wedge shape part 28,29 comprises a contact or is some contact, line contact or face contact substantially.
In Fig. 4, each wedge shape part 28,29 has the central portion 30,31 of cheese or projection, and described central portion forms the contact zone of two wedge shape parts 28,29.In this example, bottom wedge shape part 29, makes to have slight lateral shift between two wedge shape parts 28,29 more near the openend 26a of groove 26 than top wedge shape part 28.In this example, the first surface 28 of each the wedge shape part in two wedge shape parts 28,29 ', 29 ' constitute by sphere, but the summit S of each the wedge shape part in two wedge shape parts 28,29 just in time be not in first surface 28 ' or 29 ' the center.Two wedge shape parts 28,29 reason of lateral shift slightly each other why that Here it is, so that two wedge shape parts initially can contact at central portion 30,31 places, and/or when applying the bending force F that makes sheet material F bending
0The time, make two wedge shape parts can contact at central portion 30,31 places.Naturally, wedge shape part 28,29 modes positioned opposite to each other be subjected to two first surfaces 28 of wedge shape part 28,29 ', 29 ' the influence of sphere, but influenced by the flexual of top 12c of lower table 12, and the influence that also is subjected to top wedge shape part 28 self to move degree.
Usually, should be noted in the discussion above that in the usual course that should consider the summit of the central portion 30,31 of cheese or projection with respect to the plane P 0 of the opposite edges 80,81 that connect wedge shape part 28 or 29, this plane P 0 is corresponding to the gradient of wedge shape part 28,29.Summit S be cheese or projection central portion 30,31 with plane P 0 distance point (projection point) farthest.In this plane P 0 shown in Figure 14 that last embodiment of the present invention is shown and Figure 15.As seeing in Figure 14, plane P 0 is for connecting the plane of two opposite edges 80,81.As shown in figure 14, the summit S of the central portion 30,31 of cheese or projection is positioned at an end of described central portion.The maximum height of summit S is represented with h.In Figure 15, should be noted in the discussion above that the central portion 30,31 of whole cheese or projection is h with respect to the height of plane P 0 substantially.It is to be further understood that, because the first surface 28 of wedge shape part 28,29 ', 29 ' gradient, the summit S of the central portion 30,31 of projection needn't with first surface 28 ', 29 ' with wedge shape part 28,29 fastening thereon groove edge 26 ', 26 " point farthest overlaps.
Fig. 5 shows the modification of Fig. 4.In this example, bottom wedge shape part 29 is more farther from openend 26a than top wedge shape part 28, so that the lateral shift of a little is arranged between two wedge shape parts 28 and 29 once more, but this is offset the reversing form into the lateral shift of wedge shape part shown in Figure 4 28,29.In addition, under original state, owing to lack by actuator V
1, V
2Any power that applies, first surface 28 ', 29 ' between have gap J.In the embodiment of Fig. 5, similar with the embodiment of Fig. 4, select like this each first surface 28 of each wedge shape part 28,29 ', 29 ' the layout of cheese central portion 30,31 and the relative cross offset of two wedge shape parts 28,29, promptly, when bending force puts on sheet metal F, two wedge shape part 28,29 contacts on the central portion 30,31 of corresponding cheese or projection.
Fig. 6 and Fig. 7 show the bending force F0 that is used to make sheet metal F bending, and this bending force makes the top 12c bending of lower table 12 substantially, so that the top edge 26 of groove 26 " near the feather edge 26 of groove 26 ' move.
Once more, in Fig. 6 and Fig. 7, wedge shape part 28 and 29 is laterally skew relative to each other.In the embodiment of Fig. 6, for example sphere or the cheese on plano-convex surface or the central portion 31 of projection of the first surface 29 of wedge shape part 29 ' have only.Two wedge shape parts 28,29 contact on the central portion 31 of the cheese of wedge shape part 29 or projection.Should be noted in the discussion above that when a wedge shape part in two wedge shape parts 28 or 29 has the central portion 30,31 of cheese or projection, advantageously: the wedge shape part that is provided with central portion 31 be the feather edge 26 that is fastened to groove 26 ' bottom wedge shape part 29.Between lobed central portion 30 and/or 31 wedge shape part 28,29 and the wedge shape part relative lateral shift be designed for the edge 24 of compensating tank 24 and 26 ', 24 " ands' 26 ', 26 " lack of parallelisme.
The embodiment of Fig. 7 is similar to embodiment shown in Figure 4, but Fig. 7 shows at the top 12c that applies the lower table that bends when bending force F0 and this bending force are delivered to lower table 12.
Be used for wedge shape part 28 or 29 is fastened to the hole of being carved with screw thread 71,72 and 73 of support member 40,41 except that showing, Fig. 8 also show from the side the first surface 28 observed ', 29 ', the central portion 30,31 of this lip-deep cheese or projection is difficult to see with bore hole.This be because the first surface 28 of wedge shape part 28,29 ', 29 ' be sphere, the radius of curvature of this sphere is much larger than the length of wedge shape part 28,29.As example, the length of the wedge shape part 28,29 of Fig. 8 in the scope of 60mm to 80mm, and each first surface 28 ', 29 ' radius of curvature at 7000mm (or 7 meters) to the scope of 9000mm (or 9 meters).This projection height, promptly central portion 30,31 planes with respect to first surface (this plane by connect first surface 28 ', 29 ' the straight line of opposite end 80,81 limit) maximum height greatly in the scope of 0.05mm to 0.25mm.Therefore, the maximum height of central portion 30,31 of this cheese or projection or projection height first surface 28 ', 29 ' length (the longest surface size) 0.05% to 0.4% scope of described length (when the gradient of first surface is not too big, can think approx, the length of each wedge shape part equals the length of its first surface), described maximum height or projection highly preferably be in the first surface 28 of this wedge shape part 28,29 ', 29 ' length 0.1% to 0.3% scope of described length.Should be understood that the difference in height bore hole between the central portion 30,31 of cheese or projection can not be told, and for the sake of simplicity and the purpose being convenient to understand, accompanying drawing is expressly with central portion 30,31 amplifications.
Fig. 9 show have the first surface 28 that is roughly cylinder and concave ', 29 ' wedge shape part 28,29.In this example, the first surface 28 of wedge shape part 28,29 ', 29 ' be provided with the dome of the central portion 30,31 of the cheese that constitutes wedge shape part 28,29 or projection.This dome can be made of sphere, this sphere with respect to the first surface 28 of the part of described roughly cylindrical shape ', 29 ' be projection.
Wedge shape part 28,29 shown in Figure 10 have the planar first surface of tilt column 28 ', 29 '.Wedge shape part 28 or 29 first surface 28 ', the center O of the 29 ' spherical calotte that forms with respect to from first surface 28 ', 29 ' the initial vertical curve V of center C be skew (this vertical curve V with by be fixed to groove 24 ' or 26 ' the bottom surface that forms of first end at first edge crossing).In this example, wedge shape part 28 or 29 first surface 28 ', 29 ' center C constitute point with the first surface 29 of another wedge shape part 29 or 28 ' or 28 ' contact.Therefore, when first surface 28 ', 29 ' when having sphere, another wedge shape part 29 of Any shape or 28 first surface 29 with no matter ' or 28 ' contact to the some contact or be the some contact substantially.The area 28 of contact between two wedge shape parts 28,29 ', 29 ' very little thus, and, consider the making tolerance and the employed material of wedge shape part 28,29, contact area is approximately 1 millimeter 2 (mm2).Usually, some contact between two wedge shape parts 28,29 or basic for the some contact can occur in alternatively each first surface 28 of wedge shape part 28,29 ', 29 ' center C, but, as mentioned above, the contact between two wedge shape parts 28,29 is depended on their separately gradients, relativity shift and the moving of top wedge shape part 28 when applying the bending force F0 that makes sheet metal F bending.
Figure 11 show the first surface 28 of wedge shape part 28,29 ', 29 ' variant embodiment.In this embodiment, central portion 30,31 is made of the plane.The form of central portion 30,31 rectangular surfaces or square surface, this square surface or square surface first surface 28 ', 29 ' the gross area 5% to 25% scope of this gross area, preferably in 10% to 15% scope of this gross area.In this example, the first surface 28 of wedge shape part 28,29 ', 29 ' have four from first surface 28 ', 29 ' four edges extend to the inclined- plane circumference 33,34,35 and 36 of central portion 30 respectively.At central portion 30,31 is in this example on plane, with be smooth contact-making surface (alternatively, the first surface 29 of described another wedge shape part 29,28 ', 28 ' identical with the first surface of wedge shape part 28,29 shown in Figure 11) another wedge shape part 29,28 first surface 29 ', 28 ' contact be face contact between two wedge shape parts 28 and 29.
Figure 14 and Figure 15 also show two first surfaces 28 of two wedge shape parts 28,29 ', 29 ' between contact be the embodiment of face contact.As shown in these figures, first contact surface 28 ', 29 ' substantially be the inclined-plane, that is, opposite edges 80,81 have different height.In addition, the first surface 28 of wedge shape part 28,29 ', 29 ' have three continuous parts 40,30 or 31 and 42, these three parts are all extended on the whole width of wedge shape part 28,29 and are all had different gradients, and these parts 40,30/31 and 42 gradient 42 increase progressively from part 40 to part.Mid portion or middle body constitute central portion or lug boss 30,31.With respect to the plane or the axis 50 of the opposite edges 80,81 that connect wedge shape part 28,29, central portion 30,31 has the maximum height h of about 0.1mm.As seeing from Figure 15, two of relativity shift wedge shape parts the 28, the 29th slightly are identical each other, but their separately first surfaces 28 ', 29 ' orientation be relative, only make central portion 30,31 mutually in the face of and substantially parallel.Owing to the skew between two wedge shape parts 28,29, each central portion 30,31 an only part contacts with the appropriate section of another central portion, and this contact is the face contact type.Should be noted in the discussion above that in this example two wedge shape parts 28,29 have gap J under original state.
Figure 12 shows the third feasible way of contact between two wedge shape parts 28,29, i.e. line contact, preceding two kinds of ways of contact are the some contact or are a contact and face contact substantially.Illustrate in the example of the third contact type in selection, only wedge shape part 28 lobed central portions 31.In this example, the first surface 28 of wedge shape part 28,29 ', 29 ' be cylinder, but first surface 28 ' the be positioned at inboard of cylinder, so that first surface 28 ' be protruding with respect to the plane/axis of the opposite edges that connect wedge shape part 28, first surface 29 ' be positioned at the outside of cylinder, so that first surface 29 ' recess formed with respect to the plane that connects opposite edges 80,81/axis.
In addition, the center O 1 of first surface 28 ' residing cylinder than the center O 2 of first surface 29 ' residing cylinder more close described surperficial 28 '.Therefore, the radius of the part cylinder of first surface 28 ' formation is less than the radius of the part cylinder of first surface 29 ' formation.Here it is why first surface 28 ' central portion 30 the summit the first surface 29 of wedge shape part 29 ' whole width on first surface 29 ' contact so that the contact between two wedge shape parts 28,29 is the line contact.
Figure 13 shows the line of force of generation effect when applying the bending force F0 that makes sheet metal F bending.This line of force is from the edge that is fastened to groove 26 26 of wedge shape part 28 " first end towards wedge shape part 28 and first surface 29 wedge shape part 29 ' projection central portion 31 first surface in contact 28 ' the central portion 30 of projection converge or assemble; Then, these line of forces are diffused into the whole width of wedge shape part 29.In this example, the first surface 28 of wedge shape part 28,29 ', 29 ' be sphere or cylinder, so that contact is respectively a contact, is some contact or line contact substantially.Wedge shape part 28,29 can be made by hardened steel, and lower table 12 can be made by mild steel, thus under the situation that plastic deformation does not take place, makes pressure between the wedge shape part 28,29 big and make that the pressure between wedge shape part 28,29 and the lower table 12 is less.
Naturally, in the process that applies power F0 or when beginning to apply power F0, first surface 28 ', 29 ' between a contact that is described to some contact or line contact be first contact, because, this some contact or line contact take place after, the pressure that acts on bottom wedge shape part 29 from top wedge shape part 28 make the first surface 28 of wedge shape part 28,29 ', 29 ' at least enter the plastic deformation stage, to realize bigger contact area.When apply power F0, for example during 200,000 newton's (kN) power, contact area preferably each first surface 28 of wedge shape part 28,29 ', 29 ' the gross area 20% to 50% scope of the described gross area.
According to feature of the present invention, the central portion 30 of cheese or projection, 31 can comprise first surface 28 ', 29 ' center C, this center C is as described central portion 30,31 center, so that cheese central portion 30,31 projection point and wedge shape part 28,29 first surface 28 ', 29 ' geometric center overlap, but also can make the central portion 30 of described cheese or projection, 31 with respect to first surface 28 ', 29 ' the center C offset slightly: for example figure 7 illustrates this embodiment, wherein the central portion 31 of cheese or projection is with respect to each wedge shape part 28,29 first surface 28 ', 29 ' the center C offset slightly so that central portion 30,31 projection point or maximum height place not just in time with each wedge shape part 28,29 first surface 28 ', 29 ' geometric center C overlap.The projection point of cheese central portion 30,31 with respect to each first surface 28 ', 29 ' the skew or the off-centre at center less relatively, and, be the wedge shape part of 80mm for length as example, this skew or eccentric being in the scope of 2mm to 10mm.Therefore, the projection point of the central portion 30,31 of cheese or projection with respect to first surface 28 ', 29 ' the skew of center C or length that off-centre can be in wedge shape part 28,29 0% to 40% scope of this length.
In possible embodiments of the present invention, wedge shape part the 28, the 29th, identical, such as, they measure-alike and their first surface 28 ', 29 ' shape and size identical.
Yet, as description to each accompanying drawing carried out, two wedge shape parts 28,29 and inequality also be very feasible, such as, their first surface 28 ', 29 ' basically also inequality, and alternatively, the first surface 28 of described wedge shape part 28,29 ', 29 ' in the central portion 30,31 of only surface with cheese or projection.
Claims (18)
1. bullodozer that is used to make at least one sheet metal bending, described bullodozer comprises:
Have the upper table and the lower table with the top edge of carrying second flector of the feather edge of carrying first flector, described upper table and lower table can move relative to each other, bending force is put on the described sheet material;
Described bullodozer has vertical midplane, one of them has two grooves that run through its whole thickness described upper table and lower table, described two grooves are symmetrical arranged with respect to described midplane, each described groove has: first edge and second edge, with first openend that opens wide at the lateral edges place of this workbench, and blind end;
At least one stop part is arranged in each described groove, and each described stop part comprises: the first wedge shape part, and it has first end at first edge that is fixed to described groove and second end that forms first surface; And the second wedge shape part, it has first end at second edge that is fixed to described groove and second end that forms first surface; And
The first surface of at least one the wedge shape part in the described first wedge shape part and the second wedge shape part has the central portion with respect to the other parts projection on described surface, so that substantially in the contact that realizes on the described central portion between described first wedge shape part and the described second wedge shape part.
2. bullodozer according to claim 1, wherein, the central portion of at least one the wedge shape part in described first wedge shape part and the described second wedge shape part is a cheese.
3. bullodozer according to claim 1, wherein, the first surface of the first surface of the described first wedge shape part and the described second wedge shape part all has the central portion with respect to the other parts projection of described first surface separately.
4. bullodozer according to claim 3, wherein, each described central portion is a cheese.
5. bullodozer according to claim 1, wherein, the second surface of the first surface of the described first wedge shape part and/or the described second wedge shape part is a convex surface.
6. bullodozer according to claim 1, wherein, the first surface of a described wedge shape part is concave surface, and the first surface of another described wedge shape part is a convex surface.
7. bullodozer according to claim 1, wherein, the first surface of the first surface of the described at least first wedge shape part and/or the described second wedge shape part is a sphere portion.
8. bullodozer according to claim 1, wherein said two grooves have constant height at least in the zone of described stop part, and with under the situation that does not apply the bending force that makes described sheet metal bending, described first edge is parallel with described second edge.
9. bullodozer according to claim 8, wherein, the first surface of described two wedge shape parts tilts with respect to the parallel edge of described two grooves.
10. bullodozer according to claim 9, wherein, the first surface of described two wedge shape parts tilts with certain gradient, and described gradient is in respect to the axis parallel with the edge of described two grooves in 1% to 40% the scope.
11. bullodozer according to claim 10, wherein, described gradient is in respect to the axis parallel with the edge of described two grooves in 5% to 10% the scope.
12. bullodozer according to claim 1, wherein, the first surface of at least one the wedge shape part in the described first wedge shape part and the described second wedge shape part has the inclined-plane circumference that a plurality of and described central portion links to each other.
13. bullodozer according to claim 1 wherein, equals the wedge shape part of 80mm substantially for length, described central portion highly is in the scope of 0.05mm to 0.25mm with respect to the projection of the other parts of described first surface.
14. bullodozer according to claim 1, wherein, described wedge shape part is installed on a plurality of support members that link to each other with a corresponding edge of described two grooves.
15. bullodozer according to claim 14, wherein, at least one described support member can laterally move, and promptly moves along the axis parallel with the parallel edge of described groove, and movably described support member is installed on the described parallel edge.
16. bullodozer according to claim 1, wherein, described two wedge shape parts are lateral shift toward each other, promptly is offset toward each other along the axis parallel with the parallel edge of described groove.
17. bullodozer according to claim 1 wherein, under the situation that does not apply the bending force that makes described sheet metal bending, has the gap between described first wedge shape part and the described second wedge shape part.
18. bullodozer according to claim 1, wherein, described bullodozer has a plurality of stop parts, and described stop part is arranged in the corresponding described groove with respect to described midplane symmetry.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0951610 | 2009-03-13 | ||
| FR0951610A FR2942981B1 (en) | 2009-03-13 | 2009-03-13 | PRESS BRAKE FOR FOLDING SHEETS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101837400A true CN101837400A (en) | 2010-09-22 |
Family
ID=41401734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010134498A Pending CN101837400A (en) | 2009-03-13 | 2010-03-15 | Be used to make the bullodozer of sheet bending |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20100229619A1 (en) |
| JP (1) | JP2010214469A (en) |
| CN (1) | CN101837400A (en) |
| AT (1) | AT507944B1 (en) |
| CH (1) | CH700556B1 (en) |
| DE (1) | DE102010015920A1 (en) |
| ES (1) | ES2382282B1 (en) |
| FI (1) | FI20105240A (en) |
| FR (1) | FR2942981B1 (en) |
| GB (1) | GB2468591B (en) |
| IT (1) | IT1398894B1 (en) |
| NL (1) | NL2004385C2 (en) |
| RU (1) | RU2429096C1 (en) |
| SE (1) | SE534092C2 (en) |
| TW (1) | TW201039938A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104476799A (en) * | 2014-12-12 | 2015-04-01 | 苏州青青生态种植园 | Pressing block molding equipment for straw crushing production line |
| CN111954580A (en) * | 2018-03-30 | 2020-11-17 | 杰富意钢铁株式会社 | Method and apparatus for bending end of steel plate, and method and apparatus for manufacturing steel pipe |
| CN113924175A (en) * | 2019-04-29 | 2022-01-11 | 气体运输技术公司 | Bending system for forming corrugations in a component and method of using the device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL2006854C2 (en) | 2011-05-26 | 2012-12-05 | Wila Bv | METHOD AND DEVICE FOR COMPENSATING DEVIATIONS IN A DEFORMING OPERATION BETWEEN TWO BARS OF A PRESS |
| AT512174B1 (en) * | 2012-02-13 | 2013-06-15 | Trumpf Maschinen Austria Gmbh | BENDING COMPRESSION WITH ADJUSTABLE BEAM ELEMENT |
| WO2020142028A1 (en) * | 2018-12-31 | 2020-07-09 | Durmazlar Makina Sanayi Ve Ticaret Anonim Sirketi | A bending machine |
| JP7369636B2 (en) * | 2020-02-17 | 2023-10-26 | 株式会社アマダ | Press brake and bending method |
| EP4074432A1 (en) * | 2021-04-15 | 2022-10-19 | Bystronic Laser AG | Bending machine for bending workpieces, in particular bending press |
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Also Published As
| Publication number | Publication date |
|---|---|
| AT507944A3 (en) | 2011-07-15 |
| JP2010214469A (en) | 2010-09-30 |
| FI20105240A0 (en) | 2010-03-11 |
| FR2942981A1 (en) | 2010-09-17 |
| GB2468591B (en) | 2011-04-13 |
| GB2468591A (en) | 2010-09-15 |
| CH700556A2 (en) | 2010-09-15 |
| GB201004075D0 (en) | 2010-04-28 |
| ITTO20100188A1 (en) | 2010-09-14 |
| SE1050226A1 (en) | 2010-09-14 |
| CH700556B1 (en) | 2011-02-15 |
| ES2382282B1 (en) | 2013-05-27 |
| ES2382282A1 (en) | 2012-06-06 |
| AT507944A2 (en) | 2010-09-15 |
| AT507944B1 (en) | 2011-09-15 |
| RU2429096C1 (en) | 2011-09-20 |
| NL2004385A (en) | 2010-09-14 |
| IT1398894B1 (en) | 2013-03-21 |
| SE534092C2 (en) | 2011-04-26 |
| US20100229619A1 (en) | 2010-09-16 |
| NL2004385C2 (en) | 2013-10-29 |
| FR2942981B1 (en) | 2011-04-08 |
| DE102010015920A1 (en) | 2010-11-04 |
| TW201039938A (en) | 2010-11-16 |
| FI20105240A (en) | 2010-09-14 |
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Application publication date: 20100922 |