CN103537518B - Multi-connecting-rod deflection self-adaptive compensation numerical control bending machine - Google Patents
Multi-connecting-rod deflection self-adaptive compensation numerical control bending machine Download PDFInfo
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- CN103537518B CN103537518B CN201310538921.9A CN201310538921A CN103537518B CN 103537518 B CN103537518 B CN 103537518B CN 201310538921 A CN201310538921 A CN 201310538921A CN 103537518 B CN103537518 B CN 103537518B
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Abstract
The invention relates to a multi-connecting-rod deflection self-adaptive compensation numerical control bending machine and provides a multi-connecting-rod self-compensating type bending machine which is exquisite in structure, easy and simple in using method, wide in application range and capable of effectively avoiding slide block deformation and further avoid deflection deformation fundamentally during workpiece bending. The multi-connecting-rod deflection self-adaptive compensation numerical control bending machine is used for bending a workpiece passing in and out in the Y-direction and comprises a machine frame arranged in the Z-direction, a workbench arranged in the X-direction and a slide block arranged in the X-direction, wherein the workbench is fixedly connected to the middle of the machine frame, and the slide block is connected above the workbench through a pair of drive devices and performs reciprocating motion in the Z-direction under the driving of the pair of drive devices. The bending machine performs compensation to possibly-caused slide block deformation through an added compensation assembly, and accordingly the deflection deformation problem easily caused during the workpiece bending is solved fundamentally. In addition, a single power source is saved, and self-adaptive compensation of different load deflections can be achieved.
Description
Technical field
Bender application of the present invention, particularly relates to the improvement of the bender of amount of deflection self-compensation type.
Background technology
In prior art, bender is made up of frame, workbench and slide block usually.During work, first workpiece is sent between workbench and slide block, then by pressing down slide block, bending is carried out to workpiece.But the stiffness by itself by workbench and machine affects, often there is the phenomenon that bending is uneven in the bending part of workpiece, its basic reason be just workbench or (with) there is elastic deformation in slide block.
Specifically, as shown in figs9-12, in large-tonnage bender, due to the reason of equipment stiffness by itself, often occur that the uneven phenomenon of the processing bending part linearity of workpiece 7, angle (shows as workpiece two ends folding line darker, and because the reason of slide block or workbench distortion causes folding line excessively shallow in the middle part of workpiece), thus effectively can not meet the processing request of workpiece.
To this, the bender much with collocation structure is proposed in prior art, as State Bureau on July 31st, 2013 announced a " workbench open flume type collocation structure " by name, application number is the document of " 201320027044.4 ", and State Bureau is called " a kind of anti-deflection apparatus of numerical control bender " in the portion that on June 2nd, 2010 is announced, application number is " 200710192336.2 " document etc.
But collocation structure of the prior art has the defects such as structure is simple, the scope of application is little, result of use is poor mostly.Only at full load, according to set compensated curve, slide block or workbench can be compensated, once change operating pressure, cause workpiece again to produce deflection deformation by because compensated curve set on bender cannot change; Meanwhile, collocation structure of the prior art also effectively cannot be applicable to the processing situation of unbalance loading or semi-load.
| Prior art | This case | |
| Non-bending (zero load) | As shown in figure 13 | The base of slide block keeps level |
| (be fully loaded with) during bending | The base of slide block keeps level | The base of slide block keeps level |
| During bending (semi-load) | As shown in figure 14 | The base of slide block keeps level |
| During bending (unbalance loading) | As shown in figure 15 | The base of slide block keeps level |
In addition, in the prior art, usually need the power source setting up separate compensation, and then bring the increase of cost.And the present invention makes full use of the achievement in research of theory of mechanisms, rational mechanics, Elasticity, by linkage, component bending load force produced in linkage conducted inside, as balancing force, saves independent power source on the one hand; On the other hand, the size and the drive unit active force (load) that compensate strength are in proportion, and according to load from Row sum-equal matrix, can realize the adaptive equalization of different operating load deflexion.
Summary of the invention
The present invention is directed to above problem, provide a kind of delicate structure, using method is simple and applied widely, can effectively avoid slide block to be out of shape, and then avoid the multi link self-compensation type bender producing deflection deformation during workpiece bending from source.
Technical scheme of the present invention is: the workpiece passed in and out along Y-direction for bending, described bender comprises along the frame of Z-direction setting, along X to the workbench arranged with along X to the slide block arranged, described workbench is fixedly connected on central rack, and described slide block to be connected to above workbench by a pair drive unit and under the driving of a pair drive unit, to do the reciprocating motion of Z-direction;
Connected by compensation assembly between described slide block and a pair drive unit;
Described compensation assembly comprise along X to arrange compensation beam and a pair along the symmetrically arranged link assembly of its center, described compensation beam has an offside footing, and the top margin that side footing described in a pair is hinged on slide block compensates between the base at the middle part of beam and the top margin of slide block and has gap;
Described link assembly comprises connecting rod one, connecting rod two, connecting rod three and connecting rod four, the top of described connecting rod one is hinged on and compensates bottom beam, the bottom of described connecting rod two is hinged on slider top, it is hinged that hinge one is passed through on the bottom of described connecting rod one and the top of described connecting rod two, the top of described connecting rod three is hinged on drive unit bottom by hinge two and the bottom of connecting rod three is hinged on hinge one, and the top of described connecting rod four is hinged on the hinge two and bottom of connecting rod four and is hinged on the side drift angle of slide block.
The spacing of the top of described connecting rod one and the bottom of described connecting rod two is less than the length sum of connecting rod one and connecting rod two and described connecting rod one is less than 180 ° away from the end face of connecting rod four and described connecting rod two away from the angle of the end face of connecting rod four.
One offside footing of described compensation beam is hinged on the hinge two in pair of links assembly respectively.
Connected by compensation assembly a between described workbench and frame;
Described compensation assembly a comprises the link assembly a arranged to the compensation beam a arranged and a pair along workbench Central Symmetry along X, described compensation beam a has an offside footing a, and the base that side footing a described in a pair is hinged on workbench compensates between the top margin at the middle part of beam a and the base of workbench and has gap a;
Described link assembly a comprises connecting rod one a, connecting rod two a, connecting rod three a and connecting rod four a, the bottom of described connecting rod one a is hinged on the top compensating beam a, the top of described connecting rod two a is hinged on the bottom of workbench, it is hinged that hinge one a is passed through in the top of described connecting rod one a and the bottom of described connecting rod two a, the bottom of described connecting rod three a is hinged on the middle part of frame by hinge two a and the top of connecting rod three a is hinged on hinge one a, and the bottom of described connecting rod four a is hinged on hinge two a and the top of connecting rod four a and is hinged on the side drift angle of workbench.
The spacing on the bottom of described connecting rod one a and the top of described connecting rod two a is less than the length sum of connecting rod one a and connecting rod two a and described connecting rod one a is less than 180 ° away from the end face of connecting rod four a and described connecting rod two a away from the angle of the end face of connecting rod four a.
The one offside footing a of described compensation beam a is hinged on hinge two a in pair of links assembly a respectively.
Compensation assembly by setting up in the present invention compensates the issuable distortion of slide block, thus easily produces the problem of deflection deformation when solving workpiece bending from source.
The operation principle of its full load is:
First carry out force analysis to overall (slide block, compensation assembly and drive unit), under the effect of uniform bending load q, the tie point on the top of drive unit produces support reaction F1, is a pair active force and reaction force with q.Then F1=M × q(wherein M be the constant having the length of workpiece to determine).
Then force analysis is carried out to link assembly, as shown in Figure 6, connecting rod one, two, three and four forms a balanced system of force, at F1(vector, have size, direction and application point), under the acting in conjunction of F2, F3, F4, leverage keeps stress balance, because bar is long and relative position is known, according to the size of F1, the size of place F2, F3, F4 can be solved.
Again slide block and compensation rate are considered as an entirety and carry out force analysis, as shown in Figure 7, then this entirety is under the effect of q, a p-F2, a p-F3 and a p-F4, form balanced system of force, slide block can at an a p-F3 and p-F4 under the effect of the component of vertical direction, the elastic deformation top upwards caused by q is returned, reaches the effect that winding degree compensates.
In above-mentioned, compensating the size of strength is: F3=K3 × F1, F4=K4 × F1(wherein K3, K4 be by mechanism the constant that determines of the long and position of bar); Like this, when bender is when the workpiece of different-stiffness, namely when operating pressure changes, the load q of workpiece " feedback " changes thereupon, now M, K are constant, thus make F3 and F4 can the proportional change along with the change of q, namely make balancing force and according to the size of load from Row sum-equal matrix, effectively achieve amount of deflection when different operating load and can carry out the object of adaptive equalization.
Operation principle during its unbalance loading is:
Assuming that a pair drive unit top is respectively by support reaction F1A and F1B, wherein the spacing of F1A and unbalance loading after load mid point is the spacing of L1, F1B and unbalance loading after load mid point is L2, and load is F after converting, then:
F1A+F1B=F and F1A*L1=F2A*L2;
:
F1A=F×L2/(L1+L2)；F1B=F×L1/(L1+L2)；
Balancing force is:
F3A=K3×F1=K3×F×L2/(L1+L2)，F4A=K4×F1=K4×F×L2/(L1+L2)；
F3B=K3×F2=K3×F×L1/(L1+L2)，F4B=K4×F2=K4×F×L1/(L1+L2)；
Can obtain in conjunction with above-mentioned formula: the balancing force that the support reaction the closer to the mid point of unbalance loading after load produces is larger, like this, the size of balancing force can be made to change along with the change of the position of the mid point of the load of unbalance loading all the time, thus make this case also effectively can be applicable to the processing situation of unbalance loading or semi-load.
Like this, this case difference with the prior art can show as:
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is the left view of Fig. 1,
Fig. 3 is the top view of Fig. 1,
Fig. 4 is the stereogram of Fig. 1,
Fig. 5 is the structural representation of compensation assembly in the present invention;
Fig. 6 is fundamental diagram one of the present invention,
Fig. 7 is fundamental diagram two of the present invention,
Fig. 8 is fundamental diagram three of the present invention;
Fig. 9 is the structural representation in background technology of the present invention after workpiece bending,
Figure 10 is the left view of Fig. 9,
Figure 11 be the B-B of Fig. 9 to sectional view,
Figure 12 is the stereogram of Fig. 9;
Figure 13 be in prior art non-bending and unloaded time slide block base deformation schematic diagram,
Figure 14 be in prior art just in bending and semi-load time slide block base deformation schematic diagram,
Figure 15 be in prior art just in bending and unbalance loading time slide block base deformation schematic diagram;
In figure, 1 is frame, and 2 is workbench, and 3 is slide blocks, and 4 is drive units, and 5 is compensation assemblies, and 51 is compensate beam, and 510 is side footing, and 52 is link assemblies, and 521 is connecting rods one, and 522 is connecting rods two, and 523 is connecting rods three, and 524 is connecting rods four, and 7 is workpiece;
Full load: q is bending load, and F1 is that the tie point on the top of drive unit produces support reaction, and F2 is the external force that connecting rod four is subject to, and F3 is the external force that connecting rod one is subject to, and F4 is the external force that connecting rod two is subject to;
During unbalance loading: F is total power of load, one in a pair drive unit be L1 with the distance of the mid point of load and its top be subject to support reaction be F1A, the distance of another drive unit and load mid point is L2 and the support reaction that its top is subject to is F1B;
Dotted line in Figure 13-15 is horizontal line, and solid line is the hemline of slide block.
Detailed description of the invention
The present invention as shown in figs. 1-12, for the workpiece that bending passes in and out along Y-direction, described bender comprises along the frame 1 of Z-direction setting, along X to the workbench 2 arranged with along X to the slide block 3 arranged, described workbench 2 is fixedly connected in the middle part of frame 1, and described slide block 3 to be connected to above workbench 2 by a pair drive unit 4 and under the driving of a pair drive unit 4, to do the reciprocating motion of Z-direction;
Connected by compensation assembly 5 between described slide block 3 and a pair drive unit 4; By the compensation assembly set up, the issuable distortion of slide block is compensated, thus easily produce the problem of deflection deformation when solving workpiece bending from source.
Described compensation assembly 5 comprises the link assembly 52 arranged to the compensation beam 51 arranged and a pair along slide block 3 Central Symmetry along X, described compensation beam 51 has an offside footing 510, and the top margin that side footing 510 described in a pair is hinged on slide block 3 compensates between the base at the middle part of beam 51 and the top margin of slide block 3 and has gap;
Described link assembly 52 comprises connecting rod 1, connecting rod 2 522, connecting rod 3 523 and connecting rod 4 524, described connecting rod 1 and connecting rod 2 522 are arranged in described gap, the top of described connecting rod 1 is hinged on and compensates bottom beam 51, the bottom of described connecting rod 2 522 is hinged on slide block 3 top, it is hinged that hinge one is passed through on the bottom of described connecting rod 1 and the top of described connecting rod 2 522, the top of described connecting rod 3 523 is hinged on drive unit 4 bottom by hinge two, and the bottom of connecting rod 3 523 is hinged on hinge one, the top of described connecting rod 4 524 is hinged on hinge two, and the bottom of connecting rod 4 524 is hinged on the side drift angle of slide block 3.
The spacing of the top of described connecting rod 1 and the bottom of described connecting rod 2 522 is less than the length sum of connecting rod 1 and connecting rod 2 522 and described connecting rod 1 is less than 180 ° away from the end face of connecting rod 4 524 and described connecting rod 2 522 away from the angle of the end face of connecting rod 4 524.Like this, when being passed on hinge one from connecting rod three effectively, significantly can strengthen power.There is Stability Analysis of Structures, feature that result of use is good.
One offside footing 510 of described compensation beam 51 is hinged on the hinge two in pair of links assembly 52 respectively.
Connected by compensation assembly a between described workbench and frame; By the compensation assembly set up, the issuable distortion of workbench is compensated, thus easily produce the problem of deflection deformation when solving workpiece bending from source.
Described compensation assembly a comprises the link assembly a arranged to the compensation beam a arranged and a pair along workbench Central Symmetry along X, described compensation beam a has an offside footing a, and the base that side footing a described in a pair is hinged on workbench compensates between the top margin at the middle part of beam a and the base of workbench and has gap a;
Described link assembly a comprises connecting rod one a, connecting rod two a, connecting rod three a and connecting rod four a, described connecting rod one a and connecting rod two a is arranged in described gap a, the bottom of described connecting rod one a is hinged on the top compensating beam a, the top of described connecting rod two a is hinged on the bottom of workbench, it is hinged that hinge one a is passed through in the top of described connecting rod one a and the bottom of described connecting rod two a, the bottom of described connecting rod three a is hinged on the middle part of frame by hinge two a, and the top of connecting rod three a is hinged on hinge one a, the bottom of described connecting rod four a is hinged on hinge two a, and the top of connecting rod four a is hinged on the side drift angle of workbench.
The spacing on the bottom of described connecting rod one a and the top of described connecting rod two a is less than the length sum of connecting rod one a and connecting rod two a and described connecting rod one a is less than 180 ° away from the end face of connecting rod four a and described connecting rod two a away from the angle of the end face of connecting rod four a.Like this, when being passed on hinge one from connecting rod three effectively, significantly can strengthen power.There is Stability Analysis of Structures, feature that result of use is good.
The one offside footing a of described compensation beam a is hinged on hinge two a in pair of links assembly a respectively.
Compensation assembly in this case according to the working environment of reality, can be located between slide block and drive unit or between workbench and frame, also all can arrange compensation assembly in above-mentioned two positions, strengthens compensation dynamics.
Claims (6)
1. a multi link amount of deflection adaptive equalization numerical control bender, for the workpiece that bending passes in and out along Y-direction, described bender comprises along the frame of Z-direction setting, along X to the workbench arranged with along X to the slide block arranged, described workbench is fixedly connected on central rack, and described slide block to be connected to above workbench by a pair drive unit and under the driving of a pair drive unit, to do the reciprocating motion of Z-direction;
It is characterized in that: connected by compensation assembly between described slide block and a pair drive unit;
Described compensation assembly comprise along X to arrange compensation beam and a pair along the symmetrically arranged link assembly of its center, described compensation beam has an offside footing, and the top margin that side footing described in a pair is hinged on slide block compensates between the base at the middle part of beam and the top margin of slide block and has gap;
Described link assembly comprises connecting rod one, connecting rod two, connecting rod three and connecting rod four, the top of described connecting rod one is hinged on and compensates bottom beam, the bottom of described connecting rod two is hinged on slider top, it is hinged that hinge one is passed through on the bottom of described connecting rod one and the top of described connecting rod two, the top of described connecting rod three is hinged on drive unit bottom by hinge two and the bottom of connecting rod three is hinged on hinge one, and the top of described connecting rod four is hinged on the hinge two and bottom of connecting rod four and is hinged on the side drift angle of slide block.
2. a kind of multi link amount of deflection adaptive equalization numerical control bender according to claim 1, it is characterized in that, the spacing of the top of described connecting rod one and the bottom of described connecting rod two is less than the length sum of connecting rod one and connecting rod two and described connecting rod one is less than 180 ° away from the end face of connecting rod four and described connecting rod two away from the angle of the end face of connecting rod four.
3. a kind of multi link amount of deflection adaptive equalization numerical control bender according to claim 1, it is characterized in that, an offside footing of described compensation beam is hinged on the hinge two in pair of links assembly respectively.
4. a kind of multi link amount of deflection adaptive equalization numerical control bender according to claim 1, be is characterized in that, connected between described workbench and frame by compensation assembly a;
Described compensation assembly a comprises the link assembly a arranged to the compensation beam a arranged and a pair along workbench Central Symmetry along X, described compensation beam a has an offside footing a, and the base that side footing a described in a pair is hinged on workbench compensates between the top margin at the middle part of beam a and the base of workbench and has gap a;
Described link assembly a comprises connecting rod one a, connecting rod two a, connecting rod three a and connecting rod four a, the bottom of described connecting rod one a is hinged on the top compensating beam a, the top of described connecting rod two a is hinged on the bottom of workbench, it is hinged that hinge one a is passed through in the top of described connecting rod one a and the bottom of described connecting rod two a, the bottom of described connecting rod three a is hinged on the middle part of frame by hinge two a and the top of connecting rod three a is hinged on hinge one a, and the bottom of described connecting rod four a is hinged on hinge two a and the top of connecting rod four a and is hinged on the side drift angle of workbench.
5. a kind of multi link amount of deflection adaptive equalization numerical control bender according to claim 4, it is characterized in that, the spacing on the bottom of described connecting rod one a and the top of described connecting rod two a is less than the length sum of connecting rod one a and connecting rod two a and described connecting rod one a is less than 180 ° away from the end face of connecting rod four a and described connecting rod two a away from the angle of the end face of connecting rod four a.
6. a kind of multi link amount of deflection adaptive equalization numerical control bender according to claim 4, is characterized in that, an offside footing a of described compensation beam a is hinged on hinge two a in pair of links assembly a respectively.
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| CN201310538921.9A CN103537518B (en) | 2013-11-04 | 2013-11-04 | Multi-connecting-rod deflection self-adaptive compensation numerical control bending machine |
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| CN201310538921.9A CN103537518B (en) | 2013-11-04 | 2013-11-04 | Multi-connecting-rod deflection self-adaptive compensation numerical control bending machine |
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| CN106890871B (en) * | 2017-04-28 | 2019-01-11 | 山东嘉意机械有限公司 | Stand stretch compensation device and bending machine |
| CN110328263B (en) * | 2019-07-28 | 2021-03-19 | 南京涵曦月自动化科技有限公司 | Die carrier bender |
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