CN103752661A - Method for roll forming of strip-shaped irregular sectional material - Google Patents
Method for roll forming of strip-shaped irregular sectional material Download PDFInfo
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- CN103752661A CN103752661A CN201310740761.6A CN201310740761A CN103752661A CN 103752661 A CN103752661 A CN 103752661A CN 201310740761 A CN201310740761 A CN 201310740761A CN 103752661 A CN103752661 A CN 103752661A
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Abstract
The invention discloses a method for roll forming of a strip-shaped irregular sectional material. The method comprises the steps of arranging a rolling mill set and a correction tool according to the end face shape of a preset sectional material and a straight strip or arc-shaped structure; analyzing the deformation process of a to-be-rolled sectional material, determining the rolling pass number and the rolling wheel shape, and calculating the processing progress; and adopting the arranging rolling mill set and the correction tool to gradually bend the to-be-rolled sectional material into the sectional material with the needed end face according to the processing progress obtained by calculation. The method for roll forming of the strip-shaped irregular sectional material can overcome the shortcomings of small applied range, low production efficiency, poor product quality and high processing cost in the prior art and have the advantages of being wide in applied range, high in production efficiency, good in product quality and low in processing cost.
Description
Technical field
The present invention relates to section bar processing technique field, particularly, relate to a kind of long strip special-shaped material roll forming method.
Background technology
Section bar (section bar) is iron or steel and has some strength and the material of toughness (as plastics, aluminium, glass fibre etc.) by rolling, is extruded the object with certain geometrical shape that the techniques such as casting are made.
With pressing method, produce the technique of section bar.Extrudate divides hollow profile and the large class of solid profile two.Hollow profile refers to that horizontal end face has the section bar of one or more sealing through holes.The kind of extrudate and specification surpass 30,000 kinds, especially take aluminium section bar as at most, reach more than 2.4 ten thousand and plant.Next is copper section bar, magnesium section bar and shaped steel and plastic material.Solid extrudate accounts for 65% of whole extrudate descriptions, and special-shaped edge profile accounts for the major part of solid edge profile, is secondly hollow extrudate, as aluminium door-window section bar, and plastic door-window section bar etc.The section bar of producing with additive method such as rolling, die forging is compared, and the intensity of extrudate is higher.Compression tool is changed fairly simple, can small lot batch manufacture.Adopt extrusion to produce the goods that complicated shape goods, especially end face alter a great deal, can greatly reduce machining amount, reduce metal loss, improve the serviceability of part and structure.
Process for stamping, is that depended on pressure machine and mould apply external force to sheet material, band, tubing and section bar etc., makes it to produce plastic deformation or separation, thereby obtains the forming and machining method of the workpiece (stamping parts) of required form and size.Punching press and forging belong to plastic working (or claiming pressure processing) together, are collectively referred to as forging and stamping.The blank of punching press is mainly hot rolling and cold rolling steel plate and steel band.In global steel, have 60～70%, sheet material, wherein finished product is made in the punching press of most of process.The vehicle body of automobile, chassis, fuel tank, radiator fin, the drum of boiler, the housing of container, the iron core silicon-steel sheet of motor, electrical equipment etc. is all punch process.In the products such as instrument and meter, household electrical appliance, bicycle, office machinery, household utensil, also there are a large amount of stamping parts.
Sheet metal, through a series of continuous rollers, is realized continuous once distortion, obtains the processing technology of reservation shape.Rolling and forming method is, by one group of continuous frame, stainless steel is rolled into complicated shape.The order of roller is design like this, that is: the roll shape of each frame can make flow of metal continuously, until obtain required net shape.If parts is complex-shaped, maximum available 36 frames, but the parts of simple shape, three, four frames are just passable.
Adopt rolling and forming technology to produce large batch of long component most economical.Width range with steel is 2.5～1500mm, and thickness is 0.25～3.5mm.The shape of institute's processing component is from simple to complexity, closed end face.
In general, due to tooling cost and installation cost high, only have output to adopt rolling and forming technique just economical in when more than 30000 meters.Yet, now not clear for producing stainless situation as a trial with the roll forming machine of carbon steel section bar.In this case, must be careful, in case surface contamination or scratch, and equipment also needs to leave and bears stainless steel flow harden and higher resilience surplus.
In realizing process of the present invention, the defect such as inventor finds at least to exist in prior art that the scope of application is little, production efficiency is low, poor product quality and processing cost height.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of long strip special-shaped material roll forming method, to realize, the scope of application is large, production efficiency is high, good product quality and the low advantage of processing cost.
For achieving the above object, the technical solution used in the present invention is: a kind of long strip special-shaped material roll forming method, comprising:
End surface shape and vertical bar or the arcuate structure of a, the default section bar of basis, arrange rolling unit and correct frock;
Rolling section bar deformation process is treated in b, analysis, determines road number of times and the running roller shape of rolling, calculating processing progress; According to the processing progress calculating, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually.
Further, before described step a, also comprise: determine and treat the technological parameter that rolling section bar carries out roll forming.
Further, described determine treat the operation that rolling section bar carries out the technological parameter of roll forming, specifically comprise:
Main Basis is treated material and the material thickness of rolling section bar, determines that forming profiles thickness is not higher than 2mm;
In roll forming process, consider that section bar is rationally out of shape, determine that roll forming speed is 60～120mm/min, frequency conversion 50HZ left and right.
Further, described determine treat the operation that rolling section bar carries out the technological parameter of roll forming, specifically by man-machine interface, arrange.
Further, after described step b, also comprise: the section bar of manufacturing is carried out to pretreatment.
Further, described the section bar of manufacturing is carried out to pretreated operation, specifically comprises:
Mould is corrected in assembling discharging, and the section bar of manufacturing is directly processed again;
While requiring to have bending for section bar, assemble bending roll wheels, to the section bar of manufacturing is carried out to bending process.
Further, described step b, specifically comprises:
B1, analyse section bar deformation process, determine the road number of times of rolling; And, in the situation that utilizing minimum road number of times, determine running roller shape;
B2, according to definite road number of times and running roller shape, be selected in central axis constant in each passage, according to selected central axis, to the vertical progress of roller profile and laterally progress determine and calculate;
B3, according to the processing progress of the roller profile of determining and calculating, the section of section bar contour structures is divided into a plurality of paragraphs, calculates the length of each section, according to result of calculation, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually.
Further, in step b2, for the section bar of contour structures symmetry, this selected central axis is the symmetry axis of this section bar.
Further, in step b3; The total length that is positioned at each paragraph of selected central axis the right and left remains unchanged in all passages.
The long strip special-shaped material roll forming method of various embodiments of the present invention, owing to comprising: according to end surface shape and vertical bar or the arcuate structure of default section bar, rolling unit is set and corrects frock; Rolling section bar deformation process is treated in analysis, determines road number of times and the running roller shape of rolling, calculating processing progress; According to the processing progress calculating, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually; Can be by metal plate bands such as coiled material, section bars by the form rolling of the multi-pass of arranged in order, revolution along with rolling running roller, when metal plate band is sent to forward, metal plate band is carried out to continuous transverse curvature and process, to make the section bar of default specific end face; Thereby can overcome that in prior art, the scope of application is little, production efficiency is low, poor product quality and the high defect of processing cost, to realize, the scope of application is large, production efficiency is high, good product quality and the low advantage of processing cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly from description, become apparent, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the long strip special-shaped material roll forming method of the embodiment of the present invention;
Fig. 2 a is the structural representation of the guide rail end surface of the embodiment of the present invention;
Fig. 2 b is the device structure schematic diagram of the straight rectangular central guide track of the stainless steel of embodiment of the present invention cross section roll forming process;
Fig. 2 c is the device structure schematic diagram of the section bar rolling process of the embodiment of the present invention; Wherein, (a) being the structural representation of last one moulding, (b) for correcting the structural representation of copper mold, is (c) the anistree structural representation that cuts off core rod;
Fig. 3 a is the structural representation of the section bar deformation process of the embodiment of the present invention;
Fig. 3 b is the structural representation of the running roller shape of the embodiment of the present invention;
The device structure schematic diagram of selected center's axis process that Fig. 4 a and Fig. 4 b are the embodiment of the present invention;
Fig. 5 a is the structural representation of the rectification copper mold of the embodiment of the present invention; Wherein, 1. 2. 3. 4. represent to correct 4 that copper mold is divided into;
Fig. 5 b is the field apparatus photo of the rectification copper mold of the embodiment of the present invention;
The field apparatus structural representation of the bending roll wheels that Fig. 5 c and Fig. 5 d are the embodiment of the present invention;
The structural representation of the man-machine interface that Fig. 6 a and Fig. 6 b are the embodiment of the present invention.
2b by reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-running roller unit; 2-stainless steel profile shapes; 3-corrects copper mold; 4-knife edge die; 5-product.
3b by reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-upper roll wheel; 2-lower roll wheel; 3-product end surface.
5b by reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-corrects copper mold.
5c by reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-bending roll wheels; The roller set of last pipeline in one step moulding of 2-.
5d by reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-bending roll wheels.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as shown in Fig. 1-Fig. 6 b, provide a kind of long strip special-shaped material roll forming method.
The long strip special-shaped material roll forming method of the present embodiment, the rolling and forming technique adopting, specifically: the metal plate bands such as coiled material, section bar are passed through to the form rolling of the multi-pass of arranged in order, revolution along with rolling running roller, when metal plate band is sent to forward, metal plate band is carried out to continuous transverse curvature and process, to make the section bar processing method of default specific end face.Roll forming is to produce a kind of material-saving of various automobile door and window frames guide rails, energy-conservation, the New Forming Process of efficient sheetmetal, new technology.Producing automobile door and window frames guide rail adopts roller to prick the resulting economic effect of section bar, not only be to replace simply one or several parts with rolling section bar, but on organization plan, consider to improve the manufacturability of whole goods, reduce the metal consumption of parts and improve its face shaping comprehensively.
As shown in Figure 1, the long strip special-shaped material roll forming method of the present embodiment, mainly comprises the following steps:
Step 100: the technological parameter (technological parameter, output and product length are all set in man-machine interface) of determining roll forming: Main Basis is treated material and the material thickness of rolling section bar, determines that forming profiles thickness is not higher than 2mm; In roll forming process, consider that section bar is rationally out of shape, determine that roll forming speed is 60～120mm/min, frequency conversion 50HZ;
Step 101: according to end surface shape and vertical bar or the arcuate structure of default section bar, rolling unit is set and corrects frock;
Step 102: analyze section bar deformation process, determine the road number of times of rolling, in the situation that utilizing minimum road number of times, determine running roller shape, definite running roller shape should make the material for the treatment of rolling section bar have all even the most reasonably distortion;
Step 103: according to definite road number of times and running roller shape, be selected in central axis constant in each passage, according to selected central axis, the vertical progress of roller profile and horizontal progress determined and calculated; For the section bar of contour structures symmetry, this central axis is symmetry axis;
Step 104: according to the processing progress of the roller profile of determining and calculating, the section of section bar contour structures is divided into a plurality of paragraphs, calculates the length of each section, according to result of calculation, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually; The total length that is positioned at each paragraph of selected central axis the right and left remains unchanged in all passages;
Step 105: the section bar of manufacturing is carried out to pretreatment: for the section bar that prevents from having manufactured is due to last running roller effusion retrotorsion or bending, mould is corrected in assembling discharging, and the section bar of manufacturing is directly processed again; For section bar, require there is bending, assemble bending roll wheels, to the section bar of manufacturing is carried out to bending process.
In the long strip special-shaped material roll forming method of above-described embodiment, the basic functional principle of profile shapes roll forming comprises:
(1) section bar roll forming process
Section bar roll forming process, designing rolling unit and correcting frock according to product end surface shape and vertical bar or arc.In brief, section bar roll forming process, bends into section bar the process of required edge profile gradually with a set of rolling unit exactly.Referring to the straight rectangular central guide track rolling forming process of the stainless steel shown in Fig. 2 a, Fig. 2 b and Fig. 2 c.For example, the structure shown in Fig. 2 b, comprises running roller unit 1, stainless steel profile shapes 2, corrects copper mold 3, knife edge die 4 and product 5.
(2) determine the basic principle of the road number of times of rolling and the shape of running roller used
1. (Fig. 3 a) determines roll extrusion road number of times, and in the situation that utilizing minimum road number of times, the shape of running roller should make material have all even the most reasonably distortion (Fig. 3 b) to analyze section bar deformation process.For example, the structure shown in Fig. 3 b, comprises upper roll wheel 1, lower roll wheel 2 and product end surface 3.
2. should be according to selected central axis constant in each passage, vertically and laterally determining and calculating roller profile.For symmetrical profile, this axle is symmetry axis.
3. the section of profile is divided into paragraph, calculates the length of each section.Total length at each section of the right and left of selected central axis remains unchanged in all passages.Referring to Fig. 4.
4. for the section bar that prevents from having manufactured is due to last running roller effusion retrotorsion or bending, mould is corrected in assembling discharging, makes section bar straight again.For section bar, require there is bending, assemble bending roll wheels.As Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 5 d.For example, the structure shown in Fig. 5 b, comprises and corrects copper mold 1; Structure shown in Fig. 5 c, comprises the roller set 2 of bending roll wheels 1 and last pipeline in one step moulding; Structure shown in Fig. 5 d, comprises bending roll wheels 1.
(3) roll forming process parameter determines
Definite Main Basis material and the material thickness of rolling forming process parameter, forming profiles is generally below 2mm.In roll forming process, consider that section bar is rationally out of shape, forming speed should not be too fast, according to the general 60～120mm/min of material decision, and frequency conversion 50HZ left and right.Being set on equipment man-computer interface of technological parameter completes, and comprises that output and product length all can set people owner interface (being man-machine interface).Referring to Fig. 6 a, Fig. 6 b.
In sum, the long strip special-shaped material roll forming method of above-mentioned each above-described embodiment of the present invention, at least can reach following advantage:
(1) profile shapes roll forming process is compared with Sheet Metal Forming Technology, and in roll forming process, blank section bar moves continuously, and blank maintains static when stamping; In roll forming process, the length of blank is not limit, and in stamping process, charge length is subject to the restriction of punch die length;
(2) roll forming is highly efficient in productivity, and equipment needed thereby and manpower are seldom;
(3) roll forming can obtain the product of the various shapes that suface processing quality is very high, is keeping the surface quality of dull and stereotyped band;
(4) roll forming can produce the member that end surface shape is very complicated, can meet to greatest extent the requirement of structural design;
(5) forming rolls, as the main warp tool of roll forming, has the feature of long service life, and manufacture is simple, cost is low;
(6) roll forming can be processed various materials: other many materials such as soft band steel, non-ferrous metal and alloy, stainless steel etc.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a long strip special-shaped material roll forming method, is characterized in that, comprising:
End surface shape and vertical bar or the arcuate structure of a, the default section bar of basis, arrange rolling unit and correct frock;
Rolling section bar deformation process is treated in b, analysis, determines road number of times and the running roller shape of rolling, calculating processing progress; According to the processing progress calculating, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually.
2. long strip special-shaped material roll forming method according to claim 1, is characterized in that, before described step a, also comprises: determine and treat the technological parameter that rolling section bar carries out roll forming.
3. long strip special-shaped material roll forming method according to claim 2, is characterized in that, described determine treat the operation that rolling section bar carries out the technological parameter of roll forming, specifically comprise:
Main Basis is treated material and the material thickness of rolling section bar, determines that forming profiles thickness is not higher than 2mm;
In roll forming process, consider that section bar is rationally out of shape, determine that roll forming speed is 60～120mm/min, frequency conversion 50HZ.
4. long strip special-shaped material roll forming method according to claim 2, is characterized in that, described determine treat the operation that rolling section bar carries out the technological parameter of roll forming, specifically by man-machine interface, arrange.
5. long strip special-shaped material roll forming method according to claim 1, is characterized in that, after described step b, also comprises: the section bar of manufacturing is carried out to pretreatment.
6. long strip special-shaped material roll forming method according to claim 5, is characterized in that, described the section bar of manufacturing is carried out to pretreated operation, specifically comprises:
Mould is corrected in assembling discharging, and the section bar of manufacturing is directly processed again;
While requiring to have bending for section bar, assemble bending roll wheels, to the section bar of manufacturing is carried out to bending process.
7. according to the long strip special-shaped material roll forming method described in any one in claim 1-6, it is characterized in that, described step b, specifically comprises:
B1, analyse section bar deformation process, determine the road number of times of rolling; And, in the situation that utilizing minimum road number of times, determine running roller shape;
B2, according to definite road number of times and running roller shape, be selected in central axis constant in each passage, according to selected central axis, to the vertical progress of roller profile and laterally progress determine and calculate;
B3, according to the processing progress of the roller profile of determining and calculating, the section of section bar contour structures is divided into a plurality of paragraphs, calculates the length of each section, according to result of calculation, adopt the rolling unit arranging and correct frock, will treat that rolling section bar bends into the section bar of required end face gradually.
8. long strip special-shaped material roll forming method according to claim 7, is characterized in that, in step b2, for the section bar of contour structures symmetry, this selected central axis is the symmetry axis of this section bar.
9. long strip special-shaped material roll forming method according to claim 7, is characterized in that, in step b3; The total length that is positioned at each paragraph of selected central axis the right and left remains unchanged in all passages.
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| CN201310740761.6A CN103752661B (en) | 2013-12-27 | 2013-12-27 | A kind of long strip special-shaped material roll-forming method |
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| CN201310740761.6A CN103752661B (en) | 2013-12-27 | 2013-12-27 | A kind of long strip special-shaped material roll-forming method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620398A (en) * | 2021-03-10 | 2021-04-09 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
| CN114733944A (en) * | 2022-03-29 | 2022-07-12 | 绍兴建勇科技有限公司 | Preparation device for metal plate forming type goods shelf partition plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176892A (en) * | 2006-11-10 | 2008-05-14 | 中国国际海运集装箱(集团)股份有限公司 | Method for shaping container bottom cross beam and preparing method |
| US20120125065A1 (en) * | 2010-11-24 | 2012-05-24 | Sungwoo Hitech Co., Ltd. | Roll forming system and roll forming method |
| CN102513473A (en) * | 2011-12-26 | 2012-06-27 | 南京万汇新材料科技有限公司 | Continuous roller type cold-roll forming process for stainless steel covering panels of car bodies |
| US20130136942A1 (en) * | 2011-11-29 | 2013-05-30 | Sungwoo Hitech Co., Ltd. | Roll forming method and shaped beam produced by using the same |
-
2013
- 2013-12-27 CN CN201310740761.6A patent/CN103752661B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176892A (en) * | 2006-11-10 | 2008-05-14 | 中国国际海运集装箱(集团)股份有限公司 | Method for shaping container bottom cross beam and preparing method |
| US20120125065A1 (en) * | 2010-11-24 | 2012-05-24 | Sungwoo Hitech Co., Ltd. | Roll forming system and roll forming method |
| US20130136942A1 (en) * | 2011-11-29 | 2013-05-30 | Sungwoo Hitech Co., Ltd. | Roll forming method and shaped beam produced by using the same |
| CN102513473A (en) * | 2011-12-26 | 2012-06-27 | 南京万汇新材料科技有限公司 | Continuous roller type cold-roll forming process for stainless steel covering panels of car bodies |
Non-Patent Citations (1)
| Title |
|---|
| 陈秀岭: "金属型材冷辊轧成形工艺研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅰ辑）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112620398A (en) * | 2021-03-10 | 2021-04-09 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
| CN114733944A (en) * | 2022-03-29 | 2022-07-12 | 绍兴建勇科技有限公司 | Preparation device for metal plate forming type goods shelf partition plate |
| CN114733944B (en) * | 2022-03-29 | 2024-04-02 | 绍兴建勇科技有限公司 | Preparation facilities of panel beating shaping formula goods shelves baffle |
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