CN109033563A - One kind being used for spring clip part transition technique digital-to-analogue modeling method - Google Patents
One kind being used for spring clip part transition technique digital-to-analogue modeling method Download PDFInfo
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- CN109033563A CN109033563A CN201810734028.6A CN201810734028A CN109033563A CN 109033563 A CN109033563 A CN 109033563A CN 201810734028 A CN201810734028 A CN 201810734028A CN 109033563 A CN109033563 A CN 109033563A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
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Abstract
One kind being used for spring clip part transition technique digital-to-analogue modeling method, pass through setting blanking die and bending die twice, and on the basis of first step bending die, different limitation data are set according to part crimp boundary difference and show that part is segmented sheet body, again by combining order that all parts segmentation sheet body is linked to be a continuous curved surface, obtain the second step bending die basal plane, physical model is being created on the second step bending die basal plane by material thickness entity by thickening curved surface order, the production of spring clip parts batch is carried out by physical model, effectively solve the problems, such as that multiple crimp and metal material spring back angle etc. of the spring clip part in forming process exist, to realize that blanking is accurate, molding is easy, convenient for the purpose of manufacture.
Description
Technical field
The present invention relates to part manufacturing modeling technique fields, more particularly to one kind to be used for spring clip part transition technique digital-to-analogue
Modeling method.
Background technique
With the continuous innovation of aviation industry technology, aircraft is needed in development process using more and more newest aviations
Manufacturing technology, including new material technology, aeronautical manufacture integrated technology and digitized assistant design software etc., this makes designer
Member needs to use scientific and reasonable technique processing method according to the actual situation during manufacturing and designing different type part,
To meet the characteristic variations of these parts.
By taking spring clip class part as an example, such part is mainly made of stainless steel, with corrosion-resistant, high-intensitive
Etc. characteristics, however actual processing manufacture when, technique department according to design department provide product digital-to-analogue carry out industrial analysis after,
Between the characteristic of material, the Flexible change trend of part need to be considered in technique coordination process, calculates rebound data, and by work
Skill demand is added in product digital-to-analogue, is used for Digitized manufacturing, otherwise will affect the quality of the blanking of part, forming and part.
Summary of the invention
Technical problem solved by the invention is that providing one kind is used for spring clip part transition technique digital-to-analogue modeling method,
To solve the disadvantage in above-mentioned background technique.
Technical problem solved by the invention is realized using following technical scheme:
One kind being used for spring clip part transition technique digital-to-analogue modeling method, the specific steps are as follows:
1) it is required first according to part manufacturing, prepares blanking die, the external surface of through-hole will be provided with as progressive die benchmark
Face, and appearance curved surface is flattened as datum level, recycle the extraction order of generative mode configuration design module to extract outside central core
Shape selects central core to be to reduce datum level and flattening appearance curved surface error, then on the basis of flattening appearance curved surface, calls entity
The curved surface function that thickens of modeling module thickens curved surface by material thickness and can be obtained blanking die；
2) it before creating bending die, is required according to part manufacturing, calculates part springback angle and the minimum radius of flange, i.e., by zero
The minimum bending radius of part crimp is calculated by function calculation formula, it is assumed that the original crimp angle of part is α, radius of flange R,
Shape cross spider and bending start line distance a, a value pass through measurement and obtain, according toFunctional equation
The bending least radius R in the case where starting distance a is constant, under rebound state can be calculated, it is assumed that a=
1.9399mm, formation of parts R=1.5 carry out the calculating of minimum bending radius R by the original crimp angle alpha parameter of change, when
Original crimp angle [alpha] is when closing oblique angle, and R value increases and decreases in 1 range；When original crimp angle [alpha] is open bevel, the variation of R value
It is larger, at quick variation tendency；
Because the crimp sequence of part crimp is crimp at the small crimp reshaping centre two of first shaping end, according to above-mentioned calculating
Part springback angle and the minimum radius of flange out creates end crimp sketch, and in end crimp sketch on blanking die first
The middle bending for establishing part crimp and curved shape, then by stretch function, end crimp sketch geometric figure is made into shape drawing
Sheet body is extended to, first step bending die is obtained；
3) on the basis of first step bending die, different limitation data is arranged according to part crimp boundary difference and obtain zero
Part is segmented sheet body, then by combining order that all parts segmentation sheet body is linked to be a continuous curved surface, obtains the second step bending
Mould basal plane is creating physical model on the second step bending die basal plane by material thickness entity by thickening curved surface order, is passing through
Physical model carries out the production of spring clip parts batch.
In the present invention, the second step bending die directly passes through modification primary products digital-to-analogue layout design parameter and obtains.
In the present invention, blanking die refer to press machine in a punching stroke, it is more using belt shape punching press raw material
Applied to part blanking and web surface drill, as the flattening shape of part with take the boring of datum level processed, work as number of components
Amount is more, and there are when multiple incorgruous crimp, produces processing and manufacturing by batch for convenience, creating such blanking die can fast complete initially
Shape blanking work be External Shape, during creation, flattening shape because crimp number difference expansion correction value it is also different,
It is especially in the presence of the part of secondary or multiple crimp, therefore needs to calculate first according to External Shape characteristic parameter and material properties
The shape and size of woollen is unfolded in part, then manufactures return correction data by preprocessing and be modified；
Bending die includes first step bending die and the second step bending die, is chiefly used in part forming and correction manufacture,
The bending process of middle use is that blank is curved certain angle, a setting by mold and press machine according to part shape needs
The Sheet Metal Forming Technology method of shape workpiece, its feature are that the curvature in bending deformation area changes, i.e., bending radius becomes
Change, due to the presence of elastic recoil, the radius of curvature and bending angle of bool bending part occur after bending external force disappears
Variation, therefore when creation bending die, because material property need to consider the Flexible change trend and changing value of part.
The utility model has the advantages that the present invention passes through setting blanking die and bending die twice, and on the basis of first step bending die, root
Different limitation data are set according to part crimp boundary difference and show that part is segmented sheet body, then by combining order by all parts
Segmentation sheet body is linked to be a continuous curved surface, obtains the second step bending die basal plane, increases by thickening curved surface order by material thickness
Thick entity set-up model carries out the production of spring clip parts batch by physical model, effectively solves spring clip part and forming
Multiple crimp and metal material spring back angle in journey etc. there are the problem of, to realize that blanking is accurate, molding is easy, convenient for system
The purpose made.
Detailed description of the invention
Fig. 1 is the part model schematic diagram in presently preferred embodiments of the present invention.
Fig. 2 is the blanking die schematic diagram in presently preferred embodiments of the present invention.
Fig. 3 is the bending die schematic diagram in presently preferred embodiments of the present invention.
Fig. 4 is the original crimp schematic diagram of part in presently preferred embodiments of the present invention.
Fig. 5 is the end crimp schematic diagram in presently preferred embodiments of the present invention.
Fig. 6 is the physical model another kind structural schematic diagram in presently preferred embodiments of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
One kind being used for spring clip part transition technique digital-to-analogue modeling method, the specific steps are as follows:
It by taking part model shown in FIG. 1 as an example, is required first according to part manufacturing, prepares blanking die, through-hole will be provided with
External surface as progressive die datum level, and as datum level flatten appearance curved surface, recycle generative mode configuration design module
Extraction (Extract Definition) order extract central core shape, select central core to be for reduce datum level flattening shape
Wrap-around error, then on the basis of flattening appearance curved surface, that calls solid modelling module thickens curved surface (ThickSurface) function
Curved surface can be thickened by material thickness can be obtained blanking die, as shown in Figure 2；
It before creating bending die as shown in Figure 3, is required according to part manufacturing, calculates part springback angle and minimum crimp half
The critical technical parameters value such as diameter is calculated the minimum bending radius of part crimp by function calculation formula, it is assumed that part is former
Beginning crimp angle is α, radius of flange R, shape cross spider and bending start line distance a, as shown in figure 4, springing back 2 ° in Fig. 4 and being
With reference to, a value is obtained by measurement,According to functional equation
The bending least radius R in the case where starting distance a is constant, under rebound state can be calculated, it is assumed that a=
1.9399mm, formation of parts R=1.5 carry out the calculating of minimum bending radius R, tool by changing original crimp angle alpha parameter
Volume data sees attached list 1:
The calculating tables of data of 1 minimum bending radius of table
| α | 65.4 | 75.4 | 85.4 | 95.4 | 105.4 | 115.4 |
| R(mm) | 1.1981 | 1.4459 | 1.7283 | 2.0585 | 2.4563 | 2.9532 |
By above-mentioned table 1 it is found that R value increases and decreases in 1 range when original crimp angle [alpha] is to close oblique angle；When original crimp
When angle [alpha] is open bevel, R value is changed greatly, at quick variation tendency；
Because the crimp sequence of part crimp is crimp at the small crimp reshaping centre two of first shaping end, according to above-mentioned calculating
Part springback angle and the minimum radius of flange out, on blanking die, creation end crimp sketch (Sketch tools) first, and
Bending and the curved shape of part crimp are established in the crimp sketch of end, as shown in figure 5, again by stretching (Extrude
End crimp sketch geometric figure is stretched to sheet body as shape, obtains first step bending die by Surfacea) function；
Finally on the basis of first step bending die, different limitation data are arranged according to part crimp boundary difference and are obtained
Part is segmented sheet body, then by combining (Concatenate) order that all parts segmentation sheet body is linked to be a continuous curved surface,
The second step bending die basal plane is obtained, by thickening curved surface (Thick Surface) order by material thickness entity in the second step
Physical model as shown in Figure 3 is created on bending die basal plane, and the production of spring clip parts batch is carried out by physical model；
The second step bending die can also directly be reached by modifying primary products digital-to-analogue layout design parameter, as shown in Figure 6.
In the present embodiment, blanking die refers to press machine in a punching stroke, using belt shape punching press raw material,
Its blanking for more being applied to part and web surface drill, as the flattening shape of part with take the boring of datum level processed, when zero
Number of packages amount is more, and there are when multiple incorgruous crimp, produces processing and manufacturing by batch for convenience, and creating such blanking die can fast complete
The blanking work of original shape is External Shape, and during creation, correction value is unfolded because of crimp number difference in flattening shape
Difference is especially in the presence of the part of secondary or multiple crimp, therefore needs first according to External Shape characteristic parameter and material properties, meter
The shape and size of part expansion woollen are calculated, then is manufactured by preprocessing and returns correction data；
Bending die includes first step bending die and the second step bending die, is chiefly used in part forming and correction manufacture,
The bending process of middle use is that blank is curved certain angle, a setting by mold and press machine according to part shape needs
The Sheet Metal Forming Technology method of shape workpiece, its feature are that the curvature in bending deformation area changes, i.e., bending radius becomes
Change, due to the presence of elastic recoil, the radius of curvature and bending angle of bool bending part occur after bending external force disappears
Variation, therefore when creation bending die, because material property need to consider the Flexible change trend and changing value of part；
By setting blanking die and bending die, effectively solves multiple crimp and metal material of the part in forming process and return
Play angle etc. there are the problem of, to realize that blanking is accurate, molding is easy, conducive to the purpose of manufacture.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. one kind is used for spring clip part transition technique digital-to-analogue modeling method, which is characterized in that specific step is as follows:
1) it is required first according to part manufacturing, prepares blanking die, the external surface of through-hole will be provided with as progressive die datum level, and
Appearance curved surface is flattened as datum level, then on the basis of flattening appearance curved surface, that calls solid modelling module thickens curved surface
Function, which thickens curved surface by material thickness, can be obtained blanking die；
2) it before creating bending die, is required according to part manufacturing, part springback angle and the minimum radius of flange is first calculated, because part is curved
The crimp sequence on side be two among the small crimp reshaping of first shaping end at crimp, according to above-mentioned calculated part springback angle with
The minimum radius of flange creates end crimp sketch first, then establishes part crimp in the crimp sketch of end on blanking die
Bending and curved shape, then by stretch function, end crimp sketch geometric figure is stretched to sheet body as shape, obtains first
Process bending die；
3) on the basis of first step bending die, different limitation data is arranged according to part crimp boundary difference and obtain part point
Section sheet body, then by combining order that all parts segmentation sheet body is linked to be a continuous curved surface, obtain the second step bending die base
Face is creating physical model on the second step bending die basal plane by material thickness entity by thickening curved surface order, is passing through entity
Model carries out the production of spring clip parts batch.
2. according to claim 1 a kind of for spring clip part transition technique digital-to-analogue modeling method, which is characterized in that step
It is rapid 1) in, for reduce datum level flatten appearance curved surface error, utilize the extraction order extraction center of generative mode configuration design module
Layer shape.
3. according to claim 1 a kind of for spring clip part transition technique digital-to-analogue modeling method, which is characterized in that step
It is rapid 2) in, calculate the algorithm of part springback angle and the minimum radius of flange are as follows: assuming that the original crimp angle of part is α, the radius of flange
Pass through survey for R, shape cross spider and bending start line distance a, a valueIt measures out, according to functional equation
The bending least radius R in the case where starting distance a is constant, under rebound state can be calculated.
4. according to claim 3 a kind of for spring clip part transition technique digital-to-analogue modeling method, which is characterized in that false
If a=1.9399mm, formation of parts R=1.5 carries out the meter of minimum bending radius R by changing original crimp angle alpha parameter
It calculates, when original crimp angle [alpha] is to close oblique angle, R value increases and decreases in 1 range；When original crimp angle [alpha] is open bevel, R value
It changes greatly, at quick variation tendency.
5. according to claim 1 a kind of for spring clip part transition technique digital-to-analogue modeling method, which is characterized in that step
It is rapid 3) in, the second step bending die directly pass through modification primary products digital-to-analogue layout design parameter obtain.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070273688A1 (en) * | 2006-05-24 | 2007-11-29 | Yifan Chen | System and method of applying geometric surface features to volumetric CAE mesh models |
| CN101086789A (en) * | 2006-06-09 | 2007-12-12 | 乐必峰软件公司 | Reverse modeling method using mesh data as feature |
| CN103659167A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting machining method |
| CN105045995A (en) * | 2015-07-15 | 2015-11-11 | 江西洪都航空工业集团有限责任公司 | Springback process numerical model design method |
| CN106055822A (en) * | 2016-06-14 | 2016-10-26 | 大连船舶重工集团有限公司 | Method for confirming accurate zero-allowance blanking length of straight pipe to obtain bent pipes |
-
2018
- 2018-07-06 CN CN201810734028.6A patent/CN109033563A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070273688A1 (en) * | 2006-05-24 | 2007-11-29 | Yifan Chen | System and method of applying geometric surface features to volumetric CAE mesh models |
| CN101086789A (en) * | 2006-06-09 | 2007-12-12 | 乐必峰软件公司 | Reverse modeling method using mesh data as feature |
| CN103659167A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting machining method |
| CN105045995A (en) * | 2015-07-15 | 2015-11-11 | 江西洪都航空工业集团有限责任公司 | Springback process numerical model design method |
| CN106055822A (en) * | 2016-06-14 | 2016-10-26 | 大连船舶重工集团有限公司 | Method for confirming accurate zero-allowance blanking length of straight pipe to obtain bent pipes |
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Application publication date: 20181218 |
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