CN102172681B - A kind of bender lower die anti-deflection device and processing method thereof - Google Patents
A kind of bender lower die anti-deflection device and processing method thereof Download PDFInfo
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- CN102172681B CN102172681B CN201010623224.XA CN201010623224A CN102172681B CN 102172681 B CN102172681 B CN 102172681B CN 201010623224 A CN201010623224 A CN 201010623224A CN 102172681 B CN102172681 B CN 102172681B
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- voussoir
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- upper voussoir
- wedge block
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Abstract
A kind of bender lower die anti-deflection device and processing method thereof.Relate to improvement and the processing method thereof of the bender lower die anti-deflection device more identical with line of deflection shape.Be arranged between counterdie and frame workbench, it comprises upper cover plate, base, upper voussoir, lower wedge block and upper voussoir drive unit; Upper voussoir with the involutory surface of lower wedge block is respectively equipped with some mutual holding surface and contacts and towards consistent inclined-plane, the gradient on the most inclined-plane, middle part on some inclined-planes is greater than the gradient on its inclined-plane, position, adjacent both sides, successively decreases to direction of both ends successively one by one; Upper voussoir drive unit is fixedly connected on the end face of voussoir one end, and when making to drive voussoir to move relative to lower wedge block, the end face of upper voussoir raises up, and the height of projection of middle part is greater than the height of projection at two ends; Upper cover plate is located on voussoir end face.The present invention has the advantages such as precision is high, bearing capacity strong, the life-span is longer, and requiring very high user for bending precision, is an extraordinary selection.
Description
Technical field
The present invention relates to the improvement to bender anti-deflection apparatus structure, and the method for processing.
Background technology
Bender is adding man-hour, and due to lathe rigidity factor, the chine of institute's bending can present the situation of two ends " deeply ", middle " shallow ".In prior art, a kind of solution is proposed for this reason, as shown in Figure 4, devise a kind of device supporting counterdie, comprise upper cover plate, base, pull bar 8, several lower wedges 7, and wedge 9 on several, by a very long pull bar 8, all upper voussoirs 9 are connected into an entirety, by driven by motor reductor during work, the rotation of screw rod is driven again by the rotation of reductor, screw rod will make voussoir 9 produce displacement in the longitudinal direction after rotating, because the voussoir gradient of diverse location is different, flat owing to often organizing upper voussoir 9 end face, go up like this voussoir 9 move after will inconsistent on height of formation, middle high, and both sides are just lower, the curve of such formation is not high with actual sag curve degree of agreement, what can only be similar to is similar.
Summary of the invention
The present invention is directed to above problem, provide a kind of bender lower die anti-deflection device more identical with line of deflection shape and processing method thereof.
Device of the present invention is: be arranged between counterdie and frame workbench, and it comprises upper cover plate, base, upper voussoir, lower wedge block and upper voussoir drive unit; Described upper voussoir with the involutory surface of lower wedge block is respectively equipped with some mutual holding surface and contacts and towards consistent inclined-plane, the gradient on the most inclined-plane, middle part on described some inclined-planes is greater than the gradient on its inclined-plane, position, adjacent both sides, successively decreases to direction of both ends successively one by one; Described upper voussoir drive unit is fixedly connected on the end face of described upper voussoir one end, and when making to drive described upper voussoir to move relative to lower wedge block, the end face of upper voussoir raises up, and the height of projection of middle part is greater than the height of projection at two ends; Described upper cover plate is located on described upper voussoir end face.
Processing method of the present invention is: utilize the clamp for machining that cross section is U-shaped, and described upper voussoir and lower wedge block are relatively fixedly connected on two medial surfaces of described clamp for machining respectively, leave the gap being less than cylindrical cuts cutter between involutory surface; Then carry out according to the following steps:
1), according to thickness, the bender tonnage calculating actual loading of institute's machining sheet;
2), according to the length, width and height of actual loading, workbench, the deflection curve equation of counterdie is calculated;
3) deformation curve, according to deflection curve equation drawn, designs the tool track of described cutter: pressed by intermediate point to either end and be no less than five described inclined-planes; Upper and lower voussoir, at involutory plane-plane contact, and when upper voussoir moves axially, can make the end face of voussoir form tool track by the shape reverse of described deformation curve to the requirement of projection;
4), from one end feed, obtain to the other end.
Device of the present invention is made up of upper and lower two pieces of all-in-one-piece voussoirs, and the gradient on inclined-plane, each position designs according to the sag curve of slide block, the finite element analysis of workbench riser.By driven by motor reductor during work, the rotation of screw rod is driven again by the rotation of reductor, screw rod will make voussoir produce displacement in the longitudinal direction after rotating, and because the gradient of the diverse location of voussoir is different, will form a curve matched with actural deflection after upper voussoir moves.Compared with adding the structure of pull bar movement with traditional one group of voussoir, integral mechanical compensates because compensation point is more than traditional type, and overall curved surface can be produced after compensating, so its compensated curve is rounder and more smooth, can be good at coincideing with the curve of the workbench deflection deformation of reality, uniformity is good; Also have the rigidity of integral mechanical compensation integral relatively good, can the larger load of CBR traditional structure.But its difficulty of processing coefficient is very large, see the machining sketch chart of upper and lower overall voussoir, by fixing frock, upper and lower voussoir is fixed up then with the path of numerical control machining center digital control system programming software simulation inclined-plane dimensional requirement programming feed, like this by machining center clamped one time, disposable feed shapes, thus ensures its precision.The present invention has the advantages such as precision is high, bearing capacity strong, the life-span is longer, and requiring very high user for bending precision, is an extraordinary selection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
In figure, 1 is base, and 2 is upper cover plates, and 3 is upper voussoirs, and 31 is upper voussoir one inclined-planes, and 32 is upper voussoir two inclined-planes, and 4 is lower wedge blocks, and 41 is lower wedge block one inclined-planes, and 42 is lower wedge block two inclined-planes, and 5 is attachment screws, and 6 is drive motors;
Fig. 2 is I place partial enlarged drawing in Fig. 1
In figure, arrow line represents voussoir direct of travel, and H represents original state height;
Fig. 3 be in Fig. 2 upper voussoir advance after state reference map
In figure, h1 is the height close to outer end place, and h2 is the height close to middle part;
Fig. 4 is background technology view of the present invention
In figure, 7 is lower wedges, and 8 is upper wedges, and 9 is pull bars;
Fig. 5 is the schematic diagram of the present invention when processing after clamping
In figure, 10 is cutters, and 11 is fixtures, and 12 is hold-down screws.
Fig. 6 is the left view of Fig. 5
The circle that in figure, two chain line represents is the different position of cutter, and thick line is tool track;
Fig. 7 is the flexure line chart that one embodiment of the invention is tried to achieve
Fig. 8 is the tool track formed according to line of deflection figure
Fig. 9 is that duty of the present invention is with reference to figure mono-
Figure 10 is that duty of the present invention is with reference to figure bis-
Detailed description of the invention
Device of the present invention as shown in Figure 1, 2, 3, is arranged between counterdie and frame workbench, and it comprises upper cover plate 2, base 1, upper voussoir 3, lower wedge block 4 and upper voussoir drive unit (attachment screw 5, drive motors 6 etc.); Described upper voussoir 3 with the involutory surface of lower wedge block 4 is respectively equipped with some mutual holding surface and contacts and towards consistent inclined-plane, the gradient on the most inclined-plane, middle part (as voussoir two inclined-plane 32 upper in figure) on described some inclined-planes is greater than the gradient on its inclined-plane, position, adjacent both sides, successively decreases to direction of both ends successively one by one; Described upper voussoir drive unit is fixedly connected on the end face of described upper voussoir 3 one end by attachment screw 5, when making to drive described upper voussoir 3 to move relative to lower wedge block 4, the end face of upper voussoir 3 raises up, and the height of projection of middle part is greater than the height of projection at two ends; Described upper cover plate 2 is located on the end face of described upper voussoir 3.
Processing method of the present invention as viewed in figures 5-8, utilize the clamp for machining 11 that cross section is U-shaped, described upper voussoir 3 and lower wedge block 4 are relatively fixedly connected on respectively by hold-down screw 12 on two medial surfaces of described clamp for machining 11, leave the gap being less than cylindrical cuts cutter 10 between involutory surface; Then carry out according to the following steps:
1), according to thickness, the bender tonnage calculating actual loading of institute's machining sheet;
2), according to the length, width and height of actual loading, workbench, the deflection curve equation of counterdie is calculated;
3) deformation curve, according to deflection curve equation drawn, designs the tool track of described cutter: pressed by intermediate point to either end and be no less than five described inclined-planes; Upper and lower voussoir, at involutory plane-plane contact, and when upper voussoir moves axially, can make the end face of voussoir form tool track by the shape reverse of described deformation curve to the requirement of projection;
4), from one end feed, obtain to the other end.
When specifically making, calculate voussoir two inclined-plane 32, lower wedge block two inclined-plane 42 on middle part, and the gradient on other inclined-plane, length are important, need take into full account scantling, rigidity reasonable distribution, share comparatively uniform load to make each inclined-plane to greatest extent.Upper voussoir one inclined-plane 31 at two ends place, lower wedge block one inclined-plane 41, relative to the preferred negative value of the gradient on other inclined-plane, its benefit is: giving voussoir 3 has enough deflections relative to lower wedge block 4, has the space of certain slip of face, face mutually both making when maintenance, maintenance.
Operation principle of the present invention is as shown in Fig. 9,10, and normal condition is as Fig. 9, and the end face of upper voussoir 3, upper cover plate 2 is level.Before work, drive unit drives the right side motion in figure of upper voussoir 3, and upper voussoir 3 is under different gradient ramp effect, and entirety raises up, and two ends are a little less than middle directrix.
Claims (1)
1. a processing method for bender lower die anti-deflection device, described anti-deflection apparatus is arranged between counterdie and frame workbench, comprises upper cover plate, base, upper voussoir, lower wedge block and upper voussoir drive unit; Described upper voussoir with the involutory surface of lower wedge block is respectively equipped with some mutual holding surface and contacts and towards consistent inclined-plane, the gradient on the most inclined-plane, middle part on described some inclined-planes is greater than the gradient on its inclined-plane, position, adjacent both sides, successively decreases to direction of both ends successively one by one; Described upper voussoir drive unit is fixedly connected on the end face of described upper voussoir one end, and when making to drive described upper voussoir to move relative to lower wedge block, the end face of upper voussoir raises up, and the height of projection of middle part is greater than the height of projection at two ends; Described upper cover plate is located on described upper voussoir end face, it is characterized in that, utilize the clamp for machining that cross section is U-shaped, described upper voussoir and lower wedge block are relatively fixedly connected on two medial surfaces of described clamp for machining respectively, leave the gap being less than cylindrical cuts cutter between involutory surface; Then carry out according to the following steps:
1) according to thickness, the bender tonnage calculating actual loading of institute's machining sheet;
2) according to the length, width and height of actual loading, workbench, the deflection curve equation of counterdie is calculated;
3) according to the deformation curve that deflection curve equation draws, the tool track of described cutter is designed: pressed by intermediate point to either end and be no less than five described inclined-planes; Upper and lower voussoir, at involutory plane-plane contact, and when upper voussoir moves axially, can make the end face of voussoir form tool track by the shape reverse of described deformation curve to the requirement of projection;
4) from one end feed, obtain to the other end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010623224.XA CN102172681B (en) | 2010-12-31 | 2010-12-31 | A kind of bender lower die anti-deflection device and processing method thereof |
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| CN201010623224.XA CN102172681B (en) | 2010-12-31 | 2010-12-31 | A kind of bender lower die anti-deflection device and processing method thereof |
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| CN102172681A CN102172681A (en) | 2011-09-07 |
| CN102172681B true CN102172681B (en) | 2015-08-19 |
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|---|---|---|---|---|
| AT517888B1 (en) * | 2015-10-20 | 2017-09-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Production plant for the production of workpieces made of sheet metal |
| CN105817505B (en) * | 2016-03-25 | 2018-01-23 | 南京理工大学 | Six cylinder planer type numerical control tubers |
| CN109226346A (en) * | 2018-09-06 | 2019-01-18 | 泰安华鲁锻压机床有限公司 | A kind of steel plate butt weld straightener |
| WO2020163997A1 (en) * | 2019-02-12 | 2020-08-20 | 深圳配天智能技术研究院有限公司 | Bending following trajectory planning method, bending system, robot, and storage device |
| CN110026456A (en) * | 2019-05-24 | 2019-07-19 | 安徽联盟模具工业股份有限公司 | A kind of accurate mechanical compensation workbench of bending machine of overall waveform skewback structure |
| JP6671742B1 (en) * | 2019-12-23 | 2020-03-25 | 日高精機株式会社 | Mold equipment for manufacturing fins for heat exchangers |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844156A (en) * | 1972-04-13 | 1974-10-29 | Haemmerle Ag Maschf | Bending apparatus |
| US4653307A (en) * | 1979-12-22 | 1987-03-31 | Vaclav Zbornik | Bending tool |
| US4930339A (en) * | 1988-02-05 | 1990-06-05 | Ets A. Colly | Table with adjustable convexity for a press brake, bed or the like |
| US6032509A (en) * | 1998-08-31 | 2000-03-07 | Toyokoki Co., Ltd. | Press brake |
| CN201079803Y (en) * | 2007-09-13 | 2008-07-02 | 济南铸锻所捷迈机械有限公司 | Digital control hydraulic bending machine with automatic deflection compensation device |
| CN101468368A (en) * | 2007-12-25 | 2009-07-01 | 江苏扬力数控机床有限公司 | Anti-deflection apparatus of numerical control bending machine |
| CN202037239U (en) * | 2010-12-31 | 2011-11-16 | 江苏亚威机床股份有限公司 | Bender lower die anti-deflection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100875708B1 (en) * | 2007-10-30 | 2008-12-26 | 주식회사 일우산업기계 | Bed crowning system for cnc press brake |
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2010
- 2010-12-31 CN CN201010623224.XA patent/CN102172681B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844156A (en) * | 1972-04-13 | 1974-10-29 | Haemmerle Ag Maschf | Bending apparatus |
| US4653307A (en) * | 1979-12-22 | 1987-03-31 | Vaclav Zbornik | Bending tool |
| US4930339A (en) * | 1988-02-05 | 1990-06-05 | Ets A. Colly | Table with adjustable convexity for a press brake, bed or the like |
| US6032509A (en) * | 1998-08-31 | 2000-03-07 | Toyokoki Co., Ltd. | Press brake |
| CN201079803Y (en) * | 2007-09-13 | 2008-07-02 | 济南铸锻所捷迈机械有限公司 | Digital control hydraulic bending machine with automatic deflection compensation device |
| CN101468368A (en) * | 2007-12-25 | 2009-07-01 | 江苏扬力数控机床有限公司 | Anti-deflection apparatus of numerical control bending machine |
| CN202037239U (en) * | 2010-12-31 | 2011-11-16 | 江苏亚威机床股份有限公司 | Bender lower die anti-deflection device |
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| CN102172681A (en) | 2011-09-07 |
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