CN101391276B - Bending method of large-size channel steel and special bending forming die - Google Patents
Bending method of large-size channel steel and special bending forming die Download PDFInfo
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- CN101391276B CN101391276B CN2008101569086A CN200810156908A CN101391276B CN 101391276 B CN101391276 B CN 101391276B CN 2008101569086 A CN2008101569086 A CN 2008101569086A CN 200810156908 A CN200810156908 A CN 200810156908A CN 101391276 B CN101391276 B CN 101391276B
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Abstract
The invention discloses a bending method of a large-sized channel steel, and the bending method comprises the following steps: A: the channel steel is longitudinally placed on a lower worktable of a pressing machine the surface of which is provided with a dovetail groove, two heads are blocked up, and the middle is hollow; B: two wings listriums positioned at the middle of the worktable of the channel steel is clamped by a bending molding die provided with a flat workholding jaw; C: the part of the channel steel positioned at the middle part of the worktable is stressed and pressed by the pressing machine; D: the channel steel is longitudinally moved, the step B and the step C are repeated, and the bending large-sized channel steel is obtained at last. The invention also discloses a bending molding die of the bending method realizing the large-sized channel steel, the bending molding die comprises a machine rack top board, and a pressing tongs body and an otic board are horizontally arranged below the machine rack top board; the pressing tongs body is composed of an outside tongs body and an inside tongs body; the upper parts of the outside tongs body and the inside tongs body aremovably connected with the otic board through a rotating shaft; the upper part of the middle of the inside of the outside tongs body and the inside tongs body is an inclined plane; the middle part ofthe middle of a pressing tongs is provided with a through groove longitudinally extended; and an arc-shaped transmission block is arranged in the groove. The processing method is simple, and the efficiency is high.
Description
Technical field
The bending method and the special use thereof that the present invention relates to large-scale metalwork manufacture field, particularly a kind of channel beam bend mould.
Background technology
Channel-section steel is the linking beam between post and the post, the joint face when being decoration again.So its appearance flatness reaches and compliance requires all than higher.The channel beam that has according to assembly unit needs length have 5 meters how long, 8 meters how long, 10 meters how long, 12 meters how long differ, bending radius has multiple single-pieces such as interior R9 rice, 70 meters, 70.55 meters, 9.55 meters to be shaped, and single R and two R are arranged.And oriented inside bend and crooked laterally two kinds, generally can adopt pressure forming or pulling force shaping dual mode, because the ductility of metal itself, bending process is crooked relatively to the inside simple laterally, because a Wan Qu big technical barrier is will overcome two flange plates of channel-section steel when curving inwardly because the stress extruding forms the scollop, scallop that curls to the inside.Traditional processing method is: size, curved shape according to channel-section steel are made a mold, an end that is fixed on loose tool, the other end tightens up workpiece with chain block along loose tool, the firer dries by the fire simultaneously with two baking rifle symmetries and burns two blocks of flange plates up and down, and workpiece progressively is shaped around loose tool.And should be noted that: so 1, present material all is that Q345B and other low-alloy steel of higher level burn and forbids to water after red; Must cool off naturally.2, two blocks of flange plates must the symmetry baking be burnt in both sides, and dry by the fire the degree of burning and want the same, otherwise cause distortion.3, the time long, a fire one fire baking is burned, can detect after cooling off by the time.4, the firer dries by the fire the degree of burning and the pulling force of chain block will match, otherwise can play scollop, scallop.From manufacturing procedure as can be seen, traditional processing method work efficiency is high and unstable qualitatively yet.Another way is that two flange plates cut earnestly with number, requires to cut the arc material according to drawing, and web rolls into arc as requested, pieces together system then and forms; But bigger through distortion after the electric welding, still to proofread and correct.And the utilization rate of material is not high, and is all very low from cutting to dress weldering efficient.Particularly electric welding, because of arc-shaped welding seam can only manual welding, (vertical masonry joint is weldering automatically).Thereby this processing method efficient is also very low, and precision is not high.
Summary of the invention
Goal of the invention: the present invention is directed to the deficiencies in the prior art, provide a kind of bending method and the special use thereof that can accurately carry out channel beam fast to bend mould.
Technical scheme: the invention discloses a kind of bending method of channel beam, it may further comprise the steps:
A, channel-section steel vertically is placed on the surface is provided with on the lower table of press of dovetail groove, two bed hedgehopping, sky is put in the centre;
B, usefulness have the mould that bends of flat jaw and clamp two flange plates that channel-section steel is positioned at the workbench centre;
C, use press are positioned at the middle part reinforcing of workbench to channel-section steel and press down;
D, channel-section steel is vertically moved, and repeating step B and step C, crooked channel beam finally obtained.
The invention also discloses and a kind ofly realize that the special use of the bending method of channel beam bends mould, comprise the frame top board, below the frame top board, laterally be provided with two couple side by side and the pressing tongs and the otic placode that are used to clamp channel-section steel two flange plates; Pressing tongs is made of outer, interior vice body, make up tong the body by rotating shaft and otic placode flexible connection outward,, outward, interior vice body middle upper portion is the inclined-plane, thereby make when the pressing tongs body clamps, there is triangular open space between the interior vice body outward,, be convenient to the pressing tongs body under the gravity effect, open the formation jaw naturally between outer, the interior vice body; The middle part is provided with the groove of longitudinal extension in the middle of the pressing tongs body, is provided with the arc force-transmitting block in the groove.
As a further improvement on the present invention, outer vice body comprises movable binding clip with interior vice body, is connected vice body bottom and is used to hold two band steels of movable binding clip and the vice body two ends is set and end opening is connected with locating piece and places restrictions on the locating piece that movable binding clip moves forward and backward; Place adjustment sheet in the groove of pressing tongs body and between the movable binding clip.Thus, but change binding clip into structure that horizontal direction moves, and can between pressing tongs body and movable binding clip, place the adjustment sheet of different in width, thus can regulate the spacing between the movable binding clip of outer, interior vice body, thus the channel-section steel of different flange widths and thickness adapted to.
Beneficial effect: the bending method and the special use thereof of a kind of channel beam disclosed by the invention bend mould, and processing method is simple, and through facts have proved the method efficient height, with class of 4 people 8 hours, and about 9 meters of bendable inside radius, long 12 meters 4; About 70 meters of curved inside radius, 9 of long 12 meters bendables; Curved same two radiuses, inside radius one is about 9 meters, another is about 70 meters, long 12 meters, 5 of bendables.And it is simple that described special use bends forming die structure, is convenient to realize.Simultaneously can also be according to channel-section steel width and plate thickness different, adjust accordingly.
Description of drawings
Be illustrated as special use of the present invention and bend the mould cross-sectional view.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
The invention discloses a kind of bending method of channel beam, it may further comprise the steps: steps A, channel-section steel vertically is placed on the surface is provided with on the lower table of press of dovetail groove, and two bed hedgehopping, sky is put in the centre.Step B, usefulness have the mould that bends of flat jaw and clamp two flange plates that channel-section steel is positioned at the workbench centre.Step C, use press are positioned at the middle part reinforcing of workbench to channel-section steel and press down.Step D, channel-section steel is vertically moved, and repeating step B and step C, crooked channel beam finally obtained.
Specifically, as shown in the figure, the invention discloses the special use that a kind of channel-section steel bends and bend mould, comprise frame top board 1, below frame top board 1, laterally be provided with two couple side by side and the pressing tongs body 3 and the otic placode 2 that are used to clamp channel-section steel two flange plates.In the present embodiment, otic placode 2 is separately positioned on the centre and the both sides of frame top board 1 below.Pressing tongs body 3 is made of outer vice body 4 and interior vice body 5, outer vice body 4 and interior vice body 5 tops flexibly connect by rotating shaft 6 and otic placode 2, being 3 otic placodes 2 in left, center, right connects the top of two pressing tongs body 3 vice bodies respectively by three rotating shafts 6, and middle otic placode 2 connects the top of the adjacent interior vice body of two pressing tongs bodies 3 simultaneously.Outer vice body 4 and interior vice body 5 inboard middle upper portion are that inclined-plane 15 makes when pressing tongs body 3 clamps, and have triangular open space between outer, the interior vice body.In addition, outer vice body 4 and interior vice body 5 are connected with gravity and rotating shaft 6, can keep pressing tongs body 3 natural opened with certain angle, are convenient to the channel-section steel flange plate and stretch into pressing tongs body 3.The middle part is provided with the groove 7 of longitudinal extension in the middle of the pressing tongs body 3, is provided with arc force-transmitting block 8 in the groove, and the shape of groove 7 is not limit, but is preferably rectangle.As further improvement of this embodiment, two horizontal band steel plates that outer vice body 4 and interior vice body 5 comprise movable binding clip 10 and be welded in two, vice body bottom are as the locating piece 12 that can hold movable binding clip 10, and be welded in the locating piece 11 that each vice body two ends, restraint binding clip 10 move forward and backward, and the end opening of locating piece 11 and locating piece 12 weld, can increase the rigidity when holding movable binding clip 10 like this, and moving forward and backward of energy restraint binding clip 10, in the present embodiment, locating piece 11 adopts band iron.Place adjustment sheet 14 between pressing tongs body 3 and the movable binding clip 10.Also being provided with a Connection Block 9 on the frame top board 1 is connected with workbench on the hydraulic press.As long as it is just passable generally to achieve a butt joint, do not need special design.
When special use as shown in the figure bends mould work, channel-section steel 16 is placed on two ends bed hedgehopping on the press lower table, sky is put in the centre, the opening of two pressing tongs bodies 3 is aimed at two flange plates of channel-section steel 16, and according to circumstances insert the adjustment sheet 14 of different-thickness, after width and thickness adjustment are intact, move down special use and bend mould, this moment channel-section steel 16 the two flange plates arc force-transmitting block 8 that withstands suitable for reading, arc force-transmitting block 8 withstands the upper edge of the groove 7 of pressing tongs body 3, thereby form the stressed district of triangle, outer thus vice body 4 and interior vice body 5 are under the connection of rotating shaft, and be rotating closed automatically, thereby clamp two flange plates of channel-section steel 16.This moment again when pressing down, two pressing tongs body 3 jaws are tightly clamped two flange plates, the vice body lower end is directly passed to base plate with pressure and is made its extensional simultaneously, make the linear deformation under the situation of clamping of channel-section steel two flange plates simultaneously, can prevent effectively that two flange plates are stressed curling, reach the purpose of bending forming.
The Connection Block 9 that special use is bent mould is connected with workbench on the hydraulic press, and when carrying in the zero load, pressing tongs body 3 rotates up with self eccentric weight, and that arc force-transmitting block 8 pressure make is outer, interior vice body gap increases; And inclined-plane 15 suitable for reading can limit the stretching degree of two vice bodies; When being pressed with load instantly, arc force-transmitting block 8 upwards, the upper edge of withstanding the groove 7 of pressing tongs body 3 makes it clamp arc force-transmitting block 8, makes movable binding clip 10 clamp channel-section steel two flange plates by regulating block 14 then and makes its brake forming.
Concrete worker's method is as follows: step 1, channel-section steel remove deburring, have drawn processing line according to drawing; And the horizontal sagitta of shaping at good each position of calculating.Step 2, hydraulic press lower platform two ends, each fills up thick 50, wide by 100 a, band iron of long 1 meter, makes counterdie, and it is the good fillet of one side two straight flanges inwardly; 1.4 meters of spacings.Step 3, adorn a scale at lower platform, top is near the upper mounting plate outside, so that the control volume under pressure.Step 4, two drivings in front and back, of respectively hanging channel-section steel, progressively charging is progressively bent.When hydraulic press presses down, control volume under pressure well, each charging 400CM is long, first pressure testing.The first pressing amount is controlled at above till the channel-section steel strain.The shaping that puts in place for three times of the general circle gesture of bending.The first pass volume under pressure reaches 2/3rds; Second time volume under pressure reaches 1/3rd; The 3rd time finishing.
The efficient that channel-section steel bends is improved greatly class of 4 people 8 hours, about 9 meters of bendable inside radius, long 12 meters 4 owing to adopted bending method of the present invention and special use to bend mould; About 70 meters of curved inside radius, 9 of long 12 meters bendables; Curved same two radiuses: as about 9 meters in an inside radius footpath, another is about 70 meters, long 12 meters, 5 of bendables.
The invention provides a kind of bending method and special-purpose thinking and the method that bends mould thereof of channel beam; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.The all available prior art of each component part not clear and definite in the present embodiment is realized.
Claims (3)
1. the bending method of a channel beam is characterized in that, it may further comprise the steps:
A, channel-section steel vertically is placed on the surface is provided with on the lower table of press of dovetail groove, two bed hedgehopping, sky is put in the centre;
B, usefulness have the mould that bends of flat jaw and clamp two flange plates that channel-section steel is positioned at the workbench centre;
C, use press are positioned at the middle part reinforcing of workbench to channel-section steel and press down;
D, channel-section steel is vertically moved, and repeating step B and step C, crooked channel beam finally obtained;
The described mould that bends that has flat jaw comprises the frame top board, laterally is provided with pressing tongs body and otic placode that two couple side by side is used to clamp the channel-section steel both wings below the frame top board; The pressing tongs body is made of outer vice body and interior vice body, and the outer vice body and the body of making up tong flexibly connect by rotating shaft and otic placode, and outer vice body and interior vice body middle upper portion are the inclined-plane; The middle part is provided with the groove of longitudinal extension in the middle of the pressing tongs body, is provided with the arc force-transmitting block in the groove.
2. a special use that realizes the bending method of the medium-and-large-sized channel-section steel of claim 1 bends mould, it is characterized in that, comprise frame top board (1), laterally be provided with pressing tongs body (3) and the otic placode (2) that two couple side by side is used to clamp the channel-section steel both wings in frame top board (1) below; Pressing tongs body (3) is made of outer vice body (4) and interior vice body (5), and outer vice body (4) and interior vice body (5) top flexibly connect by rotating shaft (6) and otic placode (2), and outer vice body (4) and interior vice body (5) middle upper portion are the inclined-plane; The middle part is provided with the groove (7) of longitudinal extension in the middle of the pressing tongs body (3), is provided with arc force-transmitting block (8) in the groove.
3. special use according to claim 2 bends mould, it is characterized in that outer vice body (4) comprises movable binding clip (10) with interior vice body (5), be connected the vice body bottom is used to hold two band steels (12) of movable binding clip (10) and the vice body two ends is set and end opening is connected with locating piece (12) and places restrictions on the locating piece (11) that movable binding clip (10) moves forward and backward; Place adjustment sheet (14) in the groove (13) of pressing tongs body (3) and between the movable binding clip (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101569086A CN101391276B (en) | 2008-09-19 | 2008-09-19 | Bending method of large-size channel steel and special bending forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101569086A CN101391276B (en) | 2008-09-19 | 2008-09-19 | Bending method of large-size channel steel and special bending forming die |
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| Publication Number | Publication Date |
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| CN101391276A CN101391276A (en) | 2009-03-25 |
| CN101391276B true CN101391276B (en) | 2010-06-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102151716B (en) * | 2011-03-23 | 2012-10-17 | 无锡华联科技集团有限公司 | Length measuring device for channel type steel bending machine |
| CN104438497B (en) * | 2014-12-12 | 2016-06-15 | 南车长江车辆有限公司 | Clod wash channel-section steel forming method |
| CN112893668A (en) * | 2021-01-19 | 2021-06-04 | 佛山市镭戈斯数控设备有限公司 | Automatic feeding equipment for metal plate bending |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094681A (en) * | 1981-03-18 | 1982-09-22 | Rockwell International Corp | Bending |
| GB2216442A (en) * | 1988-03-10 | 1989-10-11 | Neptun Schiffswerft Veb | Section bending machine |
| GB2249506A (en) * | 1990-11-07 | 1992-05-13 | Charles Edward Harris | Method of bending L or channel sections |
| CN101147942A (en) * | 2007-10-31 | 2008-03-26 | 江苏沪宁钢机股份有限公司 | Round pipe steel component arc clod curving forming mould |
| CN201287167Y (en) * | 2008-09-19 | 2009-08-12 | 江苏沪宁钢机股份有限公司 | Bending forming die special for bending channel beam |
-
2008
- 2008-09-19 CN CN2008101569086A patent/CN101391276B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094681A (en) * | 1981-03-18 | 1982-09-22 | Rockwell International Corp | Bending |
| GB2216442A (en) * | 1988-03-10 | 1989-10-11 | Neptun Schiffswerft Veb | Section bending machine |
| GB2249506A (en) * | 1990-11-07 | 1992-05-13 | Charles Edward Harris | Method of bending L or channel sections |
| CN101147942A (en) * | 2007-10-31 | 2008-03-26 | 江苏沪宁钢机股份有限公司 | Round pipe steel component arc clod curving forming mould |
| CN201287167Y (en) * | 2008-09-19 | 2009-08-12 | 江苏沪宁钢机股份有限公司 | Bending forming die special for bending channel beam |
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| CN101391276A (en) | 2009-03-25 |
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