CN106583509A - Bending process for irregular part - Google Patents
Bending process for irregular part Download PDFInfo
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- CN106583509A CN106583509A CN201611067873.XA CN201611067873A CN106583509A CN 106583509 A CN106583509 A CN 106583509A CN 201611067873 A CN201611067873 A CN 201611067873A CN 106583509 A CN106583509 A CN 106583509A
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- bending
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- bending line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a bending process for an irregular part and belongs to the technical field of bending forming of a stamping part. The process comprises the steps: initially determining a bending line position by virtue of a sheet metal module of CATIA software; manufacturing a bending lineation sample plate; determining the bending line position and performing lineation by using the lineation sample plate; optimizing the bending sequence according to a drawing; performing a process test by using a bending machine; verifying the accuracy of the lineation sample plate according to a result and correcting data; after repeated tests, obtaining an accurate expanded view and a bending lineation sample plate drawing; determining the bending line position and performing lineation by using the lineation sample plate; optimizing the bending sequence according to the drawing; and using the bending machine to bend a material. According to the bending process provided by the invention, the condition that a machine tool cannot locate to find the bending line need not be considered, and a part can be bent by optimizing the bending sequence according to the drawing, so that the process flow and cost of a project in official batch production are reduced to a great extent, and the production efficiency is improved.
Description
Technical field
The invention belongs to stamping parts bending and molding technical field, and in particular to a kind of bending technique of irregular part.
Background technology
In punch process irregular part bending, part shape is complicated, difficult forming, is mainly reflected in part bending line
, bending line not parallel with contour line and bending line is not parallel, bending angle is diversified.
According to existing bending technique, generally in irregular part blanking, need to increase bending technique surplus, in part
Contour line reserving machine dosage, it is ensured that first bending line is parallel with contour line, then using mechanical processing technique remove bending technique more than
Amount, follow-up bending ensures that successively bending line can have at least one locating surface.
After bending positioning is ensured, due to bending angle variation, bending order is also critically important, and to prevent to sprain, tire shows
As, also needing to adjust bending order, this is possible to have impact on bending positioning, when cannot ensure wherein any one bending line positioning
When, the part can only adopt mould molding.
Therefore, the existing bending technique for irregular part, is present because process route is complicated, it is reserved substantial amounts of to need
Bending technique surplus or operation new die, cause low production efficiency, utilization rate of raw materials it is low, increase project cost defect.
The content of the invention
In order to solve that existing bending technique is present because process route is complicated, need to reserve a large amount of bending technique surpluses or
Person's operation new die, causes the technical problem of low, the increase project cost of low production efficiency, utilization rate of raw materials etc., the present invention to carry
For a kind of bending technique of new irregular part.
The technical scheme that present invention solution technical problem is taken is as follows：
The bending technique of irregular part, it comprises the steps：
Step one, pressed according to drawing with the sheet metal module (Generative Sheetmetal Design) of CATIA softwares
According to 1:1 ratio draws the graphics of irregular part；
Step 2, in sheet metal module correct materials and parts thickness and materials and parts radius bend are input into, materials and parts are launched and projected
To on two-dimentional drawing；
Step 3, the two-dimentional drawing obtained with reference to step 2 draw the expanded view and bending face mold figure of part, described
Bending face mold figure is identical with the appearance profile of expanded view, and bending face mold figure is provided with bending line, and bending line cuts into
Length is the gap of 1-1.5mm, and at least two bending line gaps on the bending line are should ensure that when bending line is more than 1 meter；
Step 4, the Unfold drawing drawn according to step 3 and bending face mold figure, make identical appearance profile
Part materials and parts and model materials and parts, model materials and parts are the thick steel plates of 1-1.5mm, stack and make the two part materials and parts and model materials and parts
Outline overlaps, and is rule on part materials and parts along the bending line gap of model materials and parts with marking pen, will be all on part materials and parts
Bending line removes model materials and parts after painting, the straight line on part materials and parts is bending line；
A plurality of bending line on step 5, the part materials and parts obtained according to step 4, can be proofreaded using the bending of bender elder generation
Bender keeps off the bending line of chi, and then, bending cannot proofread the bending line that bender keeps off chi, and part materials and parts are put on bending tire
Press, until there is the impression of tire in bending on part materials and parts, then impression overlap completely with drawn bending line, if it is misaligned after
Continue the position for manually adjusting part materials and parts to being completely superposed, it is determined that after overlapping, starting the bending that chi is kept off to bender cannot be proofreaded
Line carries out bending, forming parts after whole bendings；
Step 6, the part to step 5 bending aftershaping are detected with profile measurement model, and record each bending
Position and the gap of profile measurement sample bending position, according to record result, readjust Unfold drawing and bending line sample
Every bending line on plate figure；
Step 7, according to step 6 adjustment after Unfold drawing and bending face mold figure, repeat step four is to step
Six, accurate Unfold drawing and bending face mold figure are drawn after repetition test；
Step 8, the accurate Unfold drawing drawn according to step 7 and bending face mold figure, according to step 5
Method carries out bending to materials and parts, completes the bending technique of irregular part.
The invention has the beneficial effects as follows：Accurate bending line position is found out by three-dimensional software and by test, will not be advised
Then part cannot position the problem for determining bending line, and, the problem that materials and parts are interfered with bending tire is reduced to a problem, nothing
Need to consider that lathe cannot position the situation that can not find bending line, it is only necessary to which optimizing bending order according to drawing can complete part folding
It is curved, significantly reduce technological process and cost of the project in formal batch process, improve production efficiency.
Specific embodiment
The present invention is described in further details with reference to embodiment.
The present invention primarily determines that bending line position by the sheet metal module of CATIA softwares, makes bending face mold, uses
Face mold determines bending line position and rules, and according to drawing bending order is optimized, and using bender engineer testing is carried out, according to
The accuracy of result verification face mold simultaneously carries out data correction, after repetition test, draws accurate expanded view and bending line
Template drawing, can produce in batches.
The bending technique of irregular part of the present invention, specifically includes following process：
First, drawn using Generative Sheetmetal Design (sheet metal module) mapping softwares of CATIA softwares
Go out 1:The graphics of 1 irregular part, it is ensured that the concordance of graphics and irregular part drawing is painted, in sheet metal module
The correct material of input is thick and radius bend (taking average integer value when multiple different radius bends are possessed), and materials and parts are launched simultaneously
Project to two-dimentional drawing.Unfold drawing and bending face mold, the bending face mold and exhibition are drawn with reference to projected drawing
Open figure to be consistent completely, slightly different is that bending line is embodied on model, and using 1-1.5mm thick steel plate cutting, folding
Curved line cuts into the elongated gap of length 1-1.5mm, and at least two bending line gaps are should ensure that when bending line is more than 1 meter.
Blanking carries out engineer testing, and bending face mold and spread material are stacked to completely to upper, it is allowed to deviation less than etc.
In 0.5mm, rule along the bending line gap of bending face mold with marking pen, bending line is removed after all bending lines are painted
Model, the straight line in spread material is bending line.
First bending can proofread the bending line that bender keeps off chi, then the bending line that bending cannot be positioned.For what is cannot positioned
Bending line, since materials and parts cannot proofread bender gear chi, that just gives up gear chi, spread material is put on bending tire and is gently pressed,
Until there is the slight impression of tire in bending on materials and parts, perusal ensures that impression overlaps completely with drawn bending line, if misaligned
Continue to manually adjust materials and parts position to being completely superposed, it is determined that bending after overlapping, it is impossible to which the bending line for positioning bending is according to said method rolled over
It is curved, detected with profile measurement model after forming parts, and the curved gap with model of per pass is recorded, readjusted according to record result
Expanded view and bending face mold figure, again blanking carries out engineer testing, repeats above step.Draw after repetition test accurately
Expanded view and bending face mold figure, can produce in batches.
Embodiment：There are a large amount of similar irregular parts in the low-floor project of Shenyang Hunnan New District 100%, in steel construction
During trial-production, using the bending technique of the present invention, part quality is completely up to standard, and through the inspection put into practice, the feasibility of this technique is obtained
Arrive certainly, significantly reduced technological process and cost of the project in formal batch process, improve production efficiency.
Claims (2)
1. the bending technique of irregular part, it is characterised in that the technique comprises the steps：
Step one, with the sheet metal module of CATIA softwares according to drawing according to 1:1 ratio draws the graphics of irregular part；
Step 2, correct materials and parts thickness and materials and parts radius bend are input in sheet metal module, materials and parts are launched and two are projected to
On dimension drawing；
Step 3, the two-dimentional drawing obtained with reference to step 2 draw the expanded view and bending face mold figure of part, the bending
Face mold figure is identical with the appearance profile of expanded view, and bending face mold figure is provided with bending line, and bending line cuts into length
For the gap of 1-1.5mm, at least two bending line gaps on the bending line are should ensure that when bending line is more than 1 meter；
Step 4, the Unfold drawing drawn according to step 3 and bending face mold figure, make the part of identical appearance profile
Materials and parts and model materials and parts, model materials and parts are the thick steel plates of 1-1.5mm, and by part materials and parts and model materials and parts the two foreign steamer is stacked and make
Exterior feature overlaps, and is rule on part materials and parts along the bending line gap of model materials and parts with marking pen, by all bendings on part materials and parts
Model materials and parts are removed after line drawing is complete, the straight line on part materials and parts is bending line；
A plurality of bending line on step 5, the part materials and parts obtained according to step 4, using the bending of bender elder generation bending can be proofreaded
Machine keeps off the bending line of chi, and then, bending cannot proofread the bending line that bender keeps off chi, and part materials and parts are put into into point on bending tire
Pressure, until there is the impression of tire in bending on part materials and parts, then overlaps impression with drawn bending line, if misaligned continuation completely
The position of part materials and parts is manually adjusted to being completely superposed, it is determined that after overlapping, starting the bending line that chi is kept off to bender cannot be proofreaded
Carry out bending, forming parts after whole bendings；
Step 6, the part to step 5 bending aftershaping are detected with profile measurement model, and record each bending position
With the gap of profile measurement sample bending position, according to record result, Unfold drawing and bending face mold figure are readjusted
On every bending line；
Step 7, according to step 6 adjustment after Unfold drawing and bending face mold figure, repeat step four to step 6, instead
Retrial draws accurate Unfold drawing and bending face mold figure after testing；
Step 8, the accurate Unfold drawing drawn according to step 7 and bending face mold figure, according to the method for step 5
Bending is carried out to materials and parts, the bending technique of irregular part is completed.
2. the bending technique of irregular part as claimed in claim 1, it is characterised in that defeated in sheet metal module described in step 2
When entering correct materials and parts thickness and materials and parts radius bend, if bending line has multiple different radius bends, bending half
Footpath takes average integer value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611067873.XA CN106583509B (en) | 2016-11-29 | 2016-11-29 | The bending technique of irregular part |
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| CN201611067873.XA CN106583509B (en) | 2016-11-29 | 2016-11-29 | The bending technique of irregular part |
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| CN106583509A true CN106583509A (en) | 2017-04-26 |
| CN106583509B CN106583509B (en) | 2018-09-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107679309A (en) * | 2017-09-26 | 2018-02-09 | 陕西飞机工业（集团）有限公司 | A kind of preparation method of Double curve degree crimp sheet metal components spread material |
| CN108436397A (en) * | 2018-05-07 | 2018-08-24 | 五冶集团上海有限公司 | A kind of production method of stainless steel gutter |
| CN109590357A (en) * | 2019-01-30 | 2019-04-09 | 福建渃博特自动化设备有限公司 | A kind of metal plate bending method and terminal |
| CN109840339A (en) * | 2017-11-29 | 2019-06-04 | 中铝材料应用研究院有限公司 | A kind of Bending Processing engineering drawing production method |
| CN111400840A (en) * | 2020-04-24 | 2020-07-10 | 北京汽车集团越野车有限公司 | Method and device for determining expansion data of plate thickness change |
| CN112620506A (en) * | 2020-12-22 | 2021-04-09 | 江苏博林机械制造有限公司 | Traceless forming process for high-strength plate of large variable cross-section structural part |
| CN114433746A (en) * | 2022-01-25 | 2022-05-06 | 珠海市海卫科技有限公司 | Production process of main landing gear of airplane |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107679309A (en) * | 2017-09-26 | 2018-02-09 | 陕西飞机工业（集团）有限公司 | A kind of preparation method of Double curve degree crimp sheet metal components spread material |
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| CN109840339A (en) * | 2017-11-29 | 2019-06-04 | 中铝材料应用研究院有限公司 | A kind of Bending Processing engineering drawing production method |
| CN109840339B (en) * | 2017-11-29 | 2021-10-12 | 中铝材料应用研究院有限公司 | Manufacturing method of bending engineering drawing |
| CN108436397A (en) * | 2018-05-07 | 2018-08-24 | 五冶集团上海有限公司 | A kind of production method of stainless steel gutter |
| CN109590357A (en) * | 2019-01-30 | 2019-04-09 | 福建渃博特自动化设备有限公司 | A kind of metal plate bending method and terminal |
| CN109590357B (en) * | 2019-01-30 | 2020-03-31 | 福建渃博特自动化设备有限公司 | Metal plate bending method and terminal |
| CN111400840A (en) * | 2020-04-24 | 2020-07-10 | 北京汽车集团越野车有限公司 | Method and device for determining expansion data of plate thickness change |
| CN111400840B (en) * | 2020-04-24 | 2024-02-20 | 北京汽车集团越野车有限公司 | Method and device for determining unfolding data of plate thickness variation |
| CN112620506A (en) * | 2020-12-22 | 2021-04-09 | 江苏博林机械制造有限公司 | Traceless forming process for high-strength plate of large variable cross-section structural part |
| CN114433746A (en) * | 2022-01-25 | 2022-05-06 | 珠海市海卫科技有限公司 | Production process of main landing gear of airplane |
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| CN106583509B (en) | 2018-09-07 |
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