CN104138938B - Double-fold unfolding sheet metal parts length parameter determines method and production method - Google Patents
Double-fold unfolding sheet metal parts length parameter determines method and production method Download PDFInfo
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- CN104138938B CN104138938B CN201310446873.0A CN201310446873A CN104138938B CN 104138938 B CN104138938 B CN 104138938B CN 201310446873 A CN201310446873 A CN 201310446873A CN 104138938 B CN104138938 B CN 104138938B
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- 239000002184 metal Substances 0.000 title claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 227
- 238000012937 correction Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 25
- 238000010009 beating Methods 0.000 claims description 17
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 18
- 238000004364 calculation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The present invention relates to double-fold unfolding sheet metal parts length parameter and determine method and production method, first according to product parts figure, it is thus achieved that fundamental length sum L of all flangings between any two points to be determined '；Then in bending factor table, bent buckling corresponding to all bending angles between this any two points to be determined is chosen except value K, during choosing, judge that bent buckling is except value is the need of correction, it is modified except value needing bent buckling corresponding to bending angle revised, it is thus achieved that bent buckling corresponding to revised bending angle is except value Ki；The bent buckling that the bending angle that need not correction is corresponding is removed value and retains initial value；The most to be determined fundamental length sum L that the length of run between any two points is all flangings ' deduct bent buckling corresponding to all bending angles except value KiSum.The error of the length of run parameter of any two points that employing the method determines has substantially reduction, improves the quality of double-fold sheet metal component, it is to avoid mismachining tolerance is overproof and causes part calcellation to cause waste.
Description
Technical field
The present invention relates to a kind of bending unfolding sheet metal parts length parameter and determine method, particularly relate to a kind of double-fold metal plate
Gold part length of run parameter determination method and production method.
Background technology
Bending is that one of processing method for stamping commonly used by sheet metal component, and in the process of sheet metal component, utilization rate is high,
After double-fold refers to first inwardly sheet metal is bent into certain angle, by wherein one end of sheet metal reversely to
Flatten after outer bending, then the metal plate that bending angle that this one end is inwardly bent into sheet metal with its internal layer is identical
Metalworking technique, when calculating the blanking length needed for bending component, typically uses theoretical formula method, theoretical
Computing formula is L=L-K, in this theoretical calculation formula, L ' be between any two points to be determined
The fundamental length sum of all flangings of mark on part drawing, the fundamental length of each flanging is that this flanging is away from bending
One end, angle is to the air line distance in the outside of another flanging at this bending angle, and K is between any two points to be determined
The bent buckling of all folding corners is except value sum, and in reality is processed, operator is typically based on experience or in bending
Factor table selects, sums up out according to universal law except value due to this bent buckling, and inapplicable all
Bending situation, therefore the part of actual processing is bigger with the error of the part of design.
Summary of the invention
The purpose of the present invention is to propose to a kind of degree of precision to determine double-fold unfolding sheet metal parts length parameter
Double-fold unfolding sheet metal parts length parameter determines method.Also provide for one and make to determine in aforementioned manners unfolding sheet metal parts
The sheet metal component production method of length parameter.
For solving the problems referred to above, in the present invention, double-fold unfolding sheet metal parts length parameter determines the technology that method uses
Scheme is:
Double-fold unfolding sheet metal parts length parameter determines method, comprises the following steps,
A, according to product parts figure, it is thus achieved that the fundamental length of all flangings between any two points to be determined it
And L '；
The bending that B, all bending angles chosen in bending factor table between this any two points to be determined are corresponding
Deduction value K, the bending situation occurred according to both sides, each bending angle in product parts figure during choosing judges should
Bent buckling corresponding to bending angle is except value is the need of correction, to needing bent buckling corresponding to the bending angle revised except value
It is modified, and removes value K using revised value as the bent buckling needing the bending angle revised correspondingi；To being not required to
Bent buckling corresponding to bending angle to be revised except value using the initial value in bending factor table as its bent buckling except value Ki；
Then fundamental length sum L that length of run is all flangings between this any two points to be determined ' deduct all
Bent buckling corresponding to bending angle is except value KiSum.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The internal layer sheet material of the double-fold of degree and constitute this bending angle wherein on one side continuation inverse bending 180 degree time, this folding
The bent buckling that bent angle is corresponding removes value KiFor 3.39mm.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The internal layer sheet material of the double-fold of degree and constitute the both sides at this bending angle when all continuing bending 90 degree, this bending angle pair
The bent buckling answered removes value KiFor 3.3mm.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The outer layer sheet material of the double-fold of degree and composition a wherein Edge Bend 180 degree at bending angle, another side bending 90 degree
Time, bent buckling corresponding to this bending angle is except value KiFor 4.2mm.
The present invention makes to determine in aforementioned manners the double-fold sheet metal component production method of unfolding sheet metal parts length parameter
The technical scheme is that
Double-fold sheet metal component production method, comprises the following steps,
A, according to product parts figure, it is thus achieved that the fundamental length of all flangings between any two points to be determined it
And L '；
The bending that B, all bending angles chosen in bending factor table between this any two points to be determined are corresponding
Deduction value K, the bending situation occurred according to both sides, each bending angle in product parts figure during choosing judges should
Bent buckling corresponding to bending angle is except value is the need of correction, to needing bent buckling corresponding to the bending angle revised except value
It is modified, and removes value K using revised value as the bent buckling needing the bending angle revised correspondingi；To being not required to
Bent buckling corresponding to bending angle to be revised except value using the initial value in bending factor table as its bent buckling except value Ki；
Then fundamental length sum L that length of run is all flangings between this any two points to be determined ' deduct all
Bent buckling corresponding to bending angle is except value KiSum；
C, according to the length of run parameter blanking determined, it is thus achieved that the sheet metal of required specification；
D, according to product parts figure, sheet metal is carried out the panel beating of double-fold, it is thus achieved that required double-fold metal plate
Gold part.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The internal layer sheet material of the double-fold of degree and constitute this bending angle wherein on one side continuation inverse bending 180 degree time, this folding
The bent buckling that bent angle is corresponding removes value KiFor 3.39mm.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The internal layer sheet material of the double-fold of degree and constitute the both sides at this bending angle when all continuing bending 90 degree, this bending angle pair
The bent buckling answered removes value KiFor 3.3mm.
Bent buckling described in above-mentioned steps B needs the situation at the bending angle revised to be when bending angle is 90 except value
The outer layer sheet material of the double-fold of degree and composition a wherein Edge Bend 180 degree at bending angle, another side bending 90 degree
Time, bent buckling corresponding to this bending angle is except value KiFor 4.2mm.
According to the length of run parameter between the arbitrfary point determined, sheet metal can be entered before above-mentioned steps D
The corresponding panel beating of row.
The double-fold unfolding sheet metal parts length parameter that the present invention proposes determines method and production method, according to sheet metal component
The bent buckling that the different doubling bent angles of bending situation are corresponding judges the need of correction except value, revises needs
Bent buckling corresponding to bending angle just carrying out except value, to need not bent buckling corresponding to the bending angle revised except value directly
Connecing and choose from bending factor table, the bent buckling after processing according to judgement calculates double-fold sheet metal component any two except value
Length of run parameter between point, the length of run of any two points of the double-fold sheet metal component that employing the method determines
The error of parameter has substantially reduction, improves the quality of double-fold sheet metal component, it is to avoid mismachining tolerance is overproof and causes
The sheet metal component processed cancels and causes the waste of manpower and materials.
Further, choose suitable correction value according to the different situations at sheet metal component bending angle, be further ensured that exhibition
Open the accuracy of length parameter, improve the product quality of sheet metal component.
Further, according to determined by sheet metal component any two points length of run parameter blanking obtain needed for plate
Material, and before bending, carry out corresponding panel beating, difficulty of processing can be reduced while guaranteeing to be accurately positioned,
Reduce clamping times, improve working (machining) efficiency.
Accompanying drawing explanation
Fig. 1 is the part drawing of double-fold sheet metal component to be processed；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the left view of Fig. 1；
Fig. 4 is the right view of Fig. 1；
Fig. 5 is the location drawing of each parameter to be determined in the part drawing in Fig. 1；
Fig. 6 is that the first basic bent buckling is except the situation at the bending angle corresponding to value；
Fig. 7 is that the basic bent buckling of the second is except the situation at the bending angle corresponding to value；
Fig. 8 is that the third basic bent buckling is except the situation at the bending angle corresponding to value；
Fig. 9 be the double-fold sheet metal component production method of the present invention embodiment 1 in the location drawing at each bending angle；Also
It is that the double-fold unfolding sheet metal parts length parameter of the present invention determines the position at each bending angle in the embodiment 1 of method
Figure；
Figure 10 is the bending Angle Position figure corresponding to embodiment 2 of double-fold sheet metal component production method in the present invention；
Also it is that the double-fold unfolding sheet metal parts length parameter of the present invention determines bending corresponding in the embodiment 2 of method
The location drawing at angle；
Figure 11 is the bending Angle Position figure corresponding to embodiment 3 of double-fold sheet metal component production method in the present invention；
Also it is that the double-fold unfolding sheet metal parts length parameter of the present invention determines bending corresponding in the embodiment 3 of method
The location drawing at angle；
Figure 12 is the bending Angle Position figure corresponding to embodiment 4 of double-fold sheet metal component production method in the present invention；
Also it is that the double-fold unfolding sheet metal parts length parameter of the present invention determines bending corresponding in the embodiment 4 of method
The location drawing at angle.
Detailed description of the invention
The embodiment 1 of the double-fold sheet metal component production method of the present invention: as shown in Fig. 1～9, in the present embodiment
Double-fold sheet metal component production method comprises the following steps: 1) according to the parameter of mark in part drawing, determine arbitrarily
Fundamental length sum L of all flangings between two point to be located '；2) according to the bending situation in part drawing,
In bending factor table, choose corresponding bent buckling according to thickness of slab and bending angle situation remove value, in bending factor table
Bent buckling removes the value basic bent buckling when thickness of slab is 2mm, corresponding to the basic bending angle of Fig. 6～Fig. 8 tri-kinds
Except the value of value K is respectively as follows: as being the first basic bending angle in Fig. 6, now bending angle is 90 degree, should
It is 3.5mm that bent buckling corresponding to bending angle removes value K1 except value for the first basic bent buckling, as being the in Fig. 7
Two kinds of basic bending angle situations, now bending angle is 180 degree, and bent buckling corresponding to this bending angle is second except value
Planting basic bent buckling except value K2 is 0.86mm, in Fig. 8, is now U-shaped double-fold, will sheet material folding
After curving U-shaped, then become U-shaped by continuing bending after wherein one end inverse bending 180 degree, including interior
The outer two-layer U-shaped structure being connected, the bent buckling that now the bending angle of internal layer sheet material is corresponding takes the first base except value
This bent buckling is folding corresponding to the bending angle at 180 degree except value K1, the bending angle of ectonexine board joints
Curved deduction value takes the basic bent buckling of the second
The third basic bent buckling is 4.3mm except value K3, and in figure, La, Lb, Lc, Ld all represent the base of each flanging
This length；Need the bent buckling that doubling bent angle is corresponding to remove value to be modified when bending angle is following 3 kinds of situations:
A) bending angle r1, r5 in bending angle is such as Fig. 9, i.e. when the inner plating of the double-fold that bending angle is 90 degree
Material and constitute this bending angle wherein while continue inverse bending 180 degree time, then need the folding to this folding corner
Curved deduction value is modified, and except value, bent buckling corresponding for this bending angle Rs1 is modified to 3.39mm, should
Revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding；B) in bending angle is such as Fig. 9
During bending angle at r7, i.e. when the internal layer sheet material of the double-fold that bending angle is 90 degree and constitute the both sides at this bending angle
When all continuing bending 90 degree, then the bent buckling to this folding corner is needed to be modified except value, and by this bending
Bent buckling corresponding to angle is modified to 3.3mm except value, and this revised bent buckling is corresponding as this bending angle except value
Bent buckling except value；C), during bending angle at r6 during bending angle is such as Fig. 9, it is i.e. 90 degree double when bending angle
When the outer layer sheet material of flanging and a composition wherein Edge Bend 180 degree at bending angle, another side bending 90 degree, then
Need the bent buckling to this folding corner to be modified except value, and bent buckling corresponding for this bending angle is revised except value
For 4.2mm, this revised bent buckling is removed value except the bent buckling that value is corresponding as this bending angle；Other are not required to
Bending angle to be revised, using the basic bent buckling corresponding to this bending angle except being worth the bending corresponding as this bending angle
Deduction value, the length between any two points is then the fundamental length sum of all flangings between this any two points
L’
Deduct all bent bucklings between this any two points except value sum；3) according under the length of run parameter determined
Material, it is thus achieved that the sheet metal of required specification；4) according to this product parts figure, sheet metal is carried out double-fold
Panel beating, it is thus achieved that required double-fold sheet metal component.
It show as a example by the part drawing of sheet metal component to be processed by Fig. 1～Fig. 4 below, carry out according to said method
The processing of sheet metal component, first determines total length L and the overall width W of this part according to this part drawing, and respectively
Position L1, L2, L3, L4, L5, L6, L7, the L8 in hole；Bent buckling corresponding to each bending angle is except value such as
Shown in Tables 1 and 2, in table, each numerical value unit is mm, r1 in table, r2, r3, r4, r5, r6, r7,
R8 represents the position at bending angle respectively, particular location such as Fig. 9 that each bending angle of relating in this part drawing is corresponding
Shown in:
Bent buckling corresponding to bending angle that table 1 need not revise is except value
| Bending Angle Position | r1 | r2 | r3 | r4 | r5 | r6 | r7 | r8 |
| Basic bent buckling is except value K | 3.5 | 0.86 | 4.3 | 0.86 | 3.5 | 4.3 | 3.5 | 4.3 |
Table 2 be modified according to said method after bent buckling corresponding to bending angle except value
| Bending Angle Position | r1 | r2 | r3 | r4 | r5 | r6 | r7 | r8 |
| Bent buckling is except value | 3.39 | 0.86 | 4.3 | 0.86 | 3.39 | 4.2 | 3.3 | 4.3 |
Above-mentioned two groups of bent bucklings are used to remove value in the panel beating module of Solidworks to this part drawing respectively
Launching, each length parameter in calculated expanded view is as shown in table 3, and in table, each numerical value unit is
Mm, the particular location that L, W, L1, L2, L3, L4, L5, L6, L7, the L8 in table represents such as figure
Shown in 5:
The actual expansion parameter of table 3 exists except value and revised bent buckling remove value with being respectively adopted basic bent buckling
Calculated expansion parameter contrast in Solidworks panel beating module
It follows that obtain except value calculates in the panel beating module of solidworks according to basic bent buckling
Expansion parameter, error is to the maximum between 0.4mm, and the pitch-row that each hole is in the longitudinal direction and there is also 0.2mm
Or the error of 0.4mm, use this bent buckling corresponding except the parameter that value determines carries out blanking, punching and bending etc.
The sheet metal part that panel beating obtains, measures in size and the designed part drawing of the sheet metal part that processing obtains
Corresponding size contrast, the overall width W of sheet metal part that its processing obtains and the position of partial hole are with designed
Part drawing do not correspond；The correction folding that the modification method proposed according to the present invention obtains after repairing analog value
Curved deduction value carries out expansion parameter calculating in the panel beating module of solidworks, and the expansion parameter of gained will
Error is reduced to 0.01mm by original 0.4mm, uses the parameter that in the method, each bent buckling determines except value to add
Work obtain needed for sheet metal part, measure the size of the sheet metal part obtained each with designed part drawing
Corresponding size contrasts, each size of sheet metal part of its processing acquisition and each phase in designed part drawing
The error answering size is the least, all within allowed band.It follows that use the correction side that the present invention provides
Bending deduction value is modified by method in the calculation, and each revised bent buckling is except being worth in actual processed and applied all
Meet processing request, it is possible in the panel beating module being applied in computer aided design software, so that
Unfolding calculation is more accurate, convenient and swift.After being calculated expansion parameter according to this method, carry out according to parameter
Blanking, and can be according to calculated each hole site, the panel beating being directly punched out after blanking, then
Carry out the panel beating of double-fold, obtain required part.First it was punched out adding before the panel beating of double-fold
Work, can complete the processing of multiple location hole by clamping successively, reduce clamping times, improve working (machining) efficiency.
The embodiment 2 of the double-fold sheet metal component production method of the present invention: the part drawing in above-described embodiment is the most multiple
Miscellaneous, part drawing expansion parameter determines the bending angle situation that three kinds of needs are revised that relates to, the present embodiment and above-mentioned enforcement
Unlike example, the present embodiment pertains only to the situation as bending angle Rs1 during bending angle is such as Figure 10, i.e.
When the double-fold that bending angle is 90 degree internal layer sheet material and constitute this bending angle wherein while continue inverse bending
When 180 degree, then the bent buckling to this folding corner is needed to be modified except value, and this bending angle Rs1 is corresponding
Bent buckling be modified to 3.39mm except value, using this revised bent buckling except the value folding corresponding as this bending angle
Curved deduction value, other need not revise bending angle, using the basic bent buckling corresponding to this bending angle except value as
Bent buckling corresponding to this bending angle is except value.Use parameter determination method in this embodiment that corresponding part is launched
And the sheet metal part obtained after Bending Processing is consistent with the size in designed part drawing, it is adaptable to double-bending metal plate
The actual processing of gold part.
The embodiment 3 of the double-fold sheet metal component production method of the present invention: this embodiment as different from Example 2,
During bending angle at Rs2 during bending angle is such as Figure 11, i.e. when the inner plating of the double-fold that bending angle is 90 degree
Material and constitute the both sides at this bending angle when all continuing bending 90 degree, then need the bending at the Rs2 of this bending angle
Deduction value is modified, and except value, bent buckling corresponding for this bending angle is modified to 3.3mm, and this is revised
Bent buckling removes value except value as the bent buckling that this bending angle is corresponding, and other need not the bending angle revised, by this folding
Basic bent buckling corresponding to bent angle removes value except value as the bent buckling that this bending angle is corresponding.Between any two points
Length is then for fundamental length sum L of all flangings between this any two points ' deduct between this any two points
All bent bucklings are except value sum.Parameter determination method in this embodiment is used to carry out corresponding part launching and bending
The sheet metal part obtained after processing is consistent with the size in designed part drawing, complies fully with double-bending sheet metal component
Actual processing.
The embodiment 4 of the double-fold sheet metal component production method of the present invention: this embodiment as different from Example 2,
During bending angle at Rs3 during bending angle is such as Figure 12, i.e. when the lamina rara externa of the double-fold that bending angle is 90 degree
When material and a composition wherein Edge Bend 180 degree at bending angle, another side bending 90 degree, then need this bending
Bent buckling at angle is modified except value, and except value, bent buckling corresponding for this bending angle is modified to 4.2mm, will
This revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding, and other need not the bending revised
Angle, removes value using the basic bent buckling corresponding to this bending angle except the bent buckling that value is corresponding as this bending angle.Arbitrarily
Length between 2 is then for fundamental length sum L of all flangings between this any two points ' to deduct this any
All bent bucklings between 2 are except value sum.Use parameter determination method in this embodiment that corresponding part is carried out
The sheet metal part launched and obtain after Bending Processing is consistent with the size in designed part drawing, complies fully with double
The actual processing of bending sheet metal component.
The various embodiments described above relate separately to one of which needs to revise bent buckling except the bending angle situation of value and three kinds
Simultaneously need to revise the bending angle situation of deduction value, the most also can relate only to simultaneously
Two of which bent buckling needs, except value, the situation at bending angle revised, then according in actual parts figure to involved
Any two kinds of bending angles use corresponding to be revised bent buckling and carries out Bending Processing except value, its sheet metal part obtained with
Designed Parameters of The Parts is analyzed, and the size of its sheet metal part obtained complies fully with actual production
Need.
In these the various embodiments described above before the panel beating that sheet material is carried out double-fold, first it is punched out on sheet material
Processing, the most also can be punched out processing to it again after double-fold or other are necessary
Panel beating operation.
Double-fold unfolding sheet metal parts length parameter in the present invention determines that the embodiment of method includes determining all foldings
The fundamental length sum on limit and the bent buckling used remove two steps of value, wherein determine the longest of all flangings
Degree sum is identical with the content of the step 1 in the various embodiments described above, determines that bent buckling to be taken is except value is with upper
The content stating step 2 in each embodiment is identical, does not repeats them here.
Claims (3)
1. double-fold unfolding sheet metal parts length parameter determines method, it is characterised in that: comprise the following steps,
A, according to product parts figure, it is thus achieved that the fundamental length of all flangings between any two points to be determined it
And L '；
The folding that B, all bending angles chosen in bending factor table between this any two points to be determined are corresponding
Curved deduction value K, the bending situation occurred according to both sides, each bending angle in product parts figure during choosing judges
Bent buckling corresponding to this bending angle except value is the need of correction, any one in bending angle is following three kinds of situations
Need the bent buckling that doubling bent angle is corresponding to remove value when planting to be modified: a) when the double-fold that bending angle is 90 degree
Internal layer sheet material and constitute this bending angle wherein while continue inverse bending 180 degree time, then need this bending angle
The bent buckling at place is modified except value, and except value, bent buckling corresponding for this bending angle is modified to 3.39mm, will
This revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding；B) it it is 90 degree when bending angle
The internal layer sheet material of double-fold and constitute the both sides at this bending angle when all continuing bending 90 degree, then need this bending
Bent buckling at angle is modified except value, and except value, bent buckling corresponding for this bending angle is modified to 3.3mm, will
This revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding；C) it it is 90 degree when bending angle
When the outer layer sheet material of double-fold and a composition wherein Edge Bend 180 degree at bending angle, another side bending 90 degree,
Then need the bent buckling to this folding corner to be modified except value, and bent buckling corresponding for this bending angle is repaiied except value
It is being just 4.2mm, this revised bent buckling is being removed value except the bent buckling that value is corresponding as this bending angle；To being not required to
Bent buckling corresponding to bending angle to be revised except value using the initial value in bending factor table as its bent buckling except value Ki；
Then fundamental length sum L that length of run is all flangings between this any two points to be determined ' deduct institute
The bent buckling having bending angle corresponding removes value KiSum.
2. double-fold sheet metal component production method, it is characterised in that: comprise the following steps,
A, according to product parts figure, it is thus achieved that the fundamental length of all flangings between any two points to be determined it
And L '；
The folding that B, all bending angles chosen in bending factor table between this any two points to be determined are corresponding
Curved deduction value K, the bending situation occurred according to both sides, each bending angle in product parts figure during choosing judges
Bent buckling corresponding to this bending angle except value is the need of correction, any one in bending angle is following three kinds of situations
Need the bent buckling that doubling bent angle is corresponding to remove value when planting to be modified: a) when the double-fold that bending angle is 90 degree
Internal layer sheet material and constitute this bending angle wherein while continue inverse bending 180 degree time, then need this bending angle
The bent buckling at place is modified except value, and except value, bent buckling corresponding for this bending angle is modified to 3.39mm, will
This revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding；B) it it is 90 degree when bending angle
The internal layer sheet material of double-fold and constitute the both sides at this bending angle when all continuing bending 90 degree, then need this bending
Bent buckling at angle is modified except value, and except value, bent buckling corresponding for this bending angle is modified to 3.3mm, will
This revised bent buckling removes value except value as the bent buckling that this bending angle is corresponding；C) it it is 90 degree when bending angle
When the outer layer sheet material of double-fold and a composition wherein Edge Bend 180 degree at bending angle, another side bending 90 degree,
Then need the bent buckling to this folding corner to be modified except value, and bent buckling corresponding for this bending angle is repaiied except value
It is being just 4.2mm, this revised bent buckling is being removed value except the bent buckling that value is corresponding as this bending angle；To being not required to
Bent buckling corresponding to bending angle to be revised except value using the initial value in bending factor table as its bent buckling except value Ki；
Then fundamental length sum L that length of run is all flangings between this any two points to be determined ' deduct all
Bent buckling corresponding to bending angle is except value KiSum；
C, according to the length of run parameter blanking determined, it is thus achieved that the sheet metal of required specification；
D, according to product parts figure, sheet metal is carried out the panel beating of double-fold, it is thus achieved that required double-fold metal plate
Gold part.
Double-fold sheet metal component production method the most according to claim 2, it is characterised in that: in above-mentioned steps D
According to the length of run parameter between the arbitrfary point determined, sheet metal can be carried out corresponding panel beating before.
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| CN108321347A (en) * | 2017-12-27 | 2018-07-24 | 中国电子科技集团公司第十八研究所 | Method for expanding numerical value of special-shaped bus bar |
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| CN105867308B (en) * | 2015-01-24 | 2018-11-20 | 卡梅德生物科技（天津）有限公司 | A kind of sheet metal component rapid development system based on precision controlling |
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