CN105045995A - Springback process numerical model design method - Google Patents
Springback process numerical model design method Download PDFInfo
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- CN105045995A CN105045995A CN201510412542.4A CN201510412542A CN105045995A CN 105045995 A CN105045995 A CN 105045995A CN 201510412542 A CN201510412542 A CN 201510412542A CN 105045995 A CN105045995 A CN 105045995A
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Abstract
The invention discloses a springback process numerical model design method. The method comprises the following steps of: (1) selecting a reference plane and flattening a shape; (2) thickening a curved surface of the shape; (3) calculating a minimum bend radius; (4) drawing segmented sheet bodies; and (5) connecting the segmented sheet bodies to form a continuous curved surface, and obtaining a final process numerical model. By adopting the springback process numerical model design method, the design efficiency is effectively improved, the design cycle is shortened, and an instruction is provided for practical production; and accurate springback amount avoids practical production problems of mold scrapping and the like, thereby greatly increasing the product qualified rate and reducing the manufacturing cost.
Description
Technical field
The invention belongs to Machining Technology field, particularly a kind of resilience technique digital-to-analogue method for designing.
Background technology
In the process that airplane parts technological design manufactures, can touch a large amount of, complicated bending class part, as resilience technique digital-to-analogue, Transition Technology digital-to-analogue, inspection process digital-to-analogue etc., these technique digital-to-analogues are all connected with Design of Dies in different field.Therefore, when doing resilience technique digital-to-analogue, the accuracy of resilience parameter and the efficiency of technique digital-to-analogue design will be ensured, sometimes may secondary resilience.But traditional resilience technique digital-to-analogue degree of accuracy is not high, needs reprocessabilty, has a strong impact on product percent of pass and production efficiency, strengthen manufacturing cost.
Summary of the invention
The present invention, for solving existing resilience technique digital-to-analogue degree of accuracy and inefficient technical matters, proposes a kind of resilience technique digital-to-analogue method for designing.
For solving the problem, the technical scheme that the present invention takes is: a kind of resilience technique digital-to-analogue method for designing, comprises the steps:
(1) selected reference face, and flatten profile with this reference field;
In Three-dimensional Design Software, selected reference face, utilizes generative mode configuration design module decimates external surface, then offsets to central core, selects central core to be for reducing configuration error, finally launching appearance curved surface.
(2) appearance curved surface is thickened;
On the basis flattening appearance curved surface, thicken appearance curved surface by material thickness.
(3) minimum bending radius is calculated
Trigonometric function equation is utilized to calculate minimum bending radius under part opening and closing angle after resilience.
(4) segmentation lamellar body is drawn
Theoretical based on trigonometric function, flatten profile before utilization, first create termination crimp sketch, directly in sketch, make curved shape; Then sketch geometric figure is stretched to lamellar body as profile, finally different according to border, different restricting datas is set and draws segmentation lamellar body.
(5) connection segment lamellar body, forms a continuous print curved surface
All segmentation lamellar bodies are linked to be a continuous print curved surface, thicken curved surface by material thickness, obtain final technique digital-to-analogue.
The beneficial effect that the present invention obtains is: adopt this resilience technique digital-to-analogue method for designing, effectively improve the efficiency of design, shortens the design cycle, for actual production provides guidance; Accurate springback capacity, the practical problems avoiding mould to scrap etc. producing, greatly improves product percent of pass, reduces manufacturing cost.
Embodiment
Below for certain type passenger observation cabin spring clamp trestle component design technology digital-to-analogue, more detailed description is done to embodiments of the present invention.
A kind of resilience technique digital-to-analogue method for designing, comprises the steps:
(1) selected reference face, and flatten profile with this reference field;
In Three-dimensional Design Software, selected reference face, utilizes generative mode configuration design module decimates external surface; Then offset to central core, select central core to be for reducing configuration error, finally launching appearance curved surface.
(2) appearance curved surface is thickened;
On the basis flattening appearance curved surface, that calls solid modelling module thickens curved surface function, thickens appearance curved surface by material thickness.
(3) minimum bending radius is calculated
When designing this type of technique digital-to-analogue, because material behavior need consider Flexible change trend and the changing value of part.For ensureing that External Shape is constant, along with the continuous change of spring back angle, bending radius also can change thereupon, by the minimum bending radius calculated under part opening and closing angle after resilience that trigonometric function equation can be very fast.
(4) segmentation lamellar body is drawn
Theoretical based on trigonometric function, flatten profile before utilization, first create termination crimp sketch, directly in sketch, make curved shape; Then sketch geometric figure is stretched to lamellar body as profile; Finally different according to border, different restricting datas is set and draws segmentation lamellar body.
(5) connection segment lamellar body, forms a continuous print curved surface
All segmentation lamellar bodies are linked to be a continuous print curved surface, thicken curved surface by material thickness, obtain final technique digital-to-analogue.
What more than enumerate is only specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, can also have and manyly similar change shape.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think invention which is intended to be protected.
Claims (1)
1. a resilience technique digital-to-analogue method for designing, is characterized in that: comprise the following steps:
(1) selected reference face, flattens profile: in Three-dimensional Design Software, first selected reference face, extracts external surface, then offsets to central core, selects central core to be for reducing configuration error, finally launching appearance curved surface;
(2) appearance curved surface is thickened: on the basis flattening appearance curved surface, thicken appearance curved surface by material thickness;
(3) minimum bending radius is calculated: utilize trigonometric function equation to calculate minimum bending radius under part opening and closing angle after resilience;
(4) draw segmentation lamellar body: theoretical based on trigonometric function, before utilization, flatten profile, first create termination crimp sketch, directly in sketch, make curved shape; Then sketch geometric figure is stretched to lamellar body as profile, finally different according to border, different restricting datas is set and draws segmentation lamellar body;
(5) connection segment lamellar body, forms a continuous print curved surface: all segmentation lamellar bodies are linked to be a continuous print curved surface, thicken curved surface by material thickness, obtains final technique digital-to-analogue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412542.4A CN105045995A (en) | 2015-07-15 | 2015-07-15 | Springback process numerical model design method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510412542.4A CN105045995A (en) | 2015-07-15 | 2015-07-15 | Springback process numerical model design method |
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| CN105045995A true CN105045995A (en) | 2015-11-11 |
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| CN201510412542.4A Pending CN105045995A (en) | 2015-07-15 | 2015-07-15 | Springback process numerical model design method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033563A (en) * | 2018-07-06 | 2018-12-18 | 江西洪都航空工业集团有限责任公司 | One kind being used for spring clip part transition technique digital-to-analogue modeling method |
| CN111723452A (en) * | 2019-03-22 | 2020-09-29 | 东汉新能源汽车技术有限公司 | Calculation method of panel rebound warpage and optimization method of panel rebound warpage |
Citations (4)
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| US20060242630A1 (en) * | 2005-03-09 | 2006-10-26 | Maxis Co., Ltd. | Process for preparing design procedure document and apparatus for the same |
| CN102982200A (en) * | 2012-11-06 | 2013-03-20 | 西北工业大学 | Design method of airplane frame and rib type sheet metal part processing model |
| CN103577630A (en) * | 2013-10-11 | 2014-02-12 | 中航飞机股份有限公司西安飞机分公司 | Airplane part reverse modeling method based on tangent plane mould line |
| CN104392052A (en) * | 2014-11-29 | 2015-03-04 | 江西洪都航空工业集团有限责任公司 | S-section sag-free aircraft frame and rib sheet metal part springback compensation calculation method |
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2015
- 2015-07-15 CN CN201510412542.4A patent/CN105045995A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| US20060242630A1 (en) * | 2005-03-09 | 2006-10-26 | Maxis Co., Ltd. | Process for preparing design procedure document and apparatus for the same |
| CN102982200A (en) * | 2012-11-06 | 2013-03-20 | 西北工业大学 | Design method of airplane frame and rib type sheet metal part processing model |
| CN103577630A (en) * | 2013-10-11 | 2014-02-12 | 中航飞机股份有限公司西安飞机分公司 | Airplane part reverse modeling method based on tangent plane mould line |
| CN104392052A (en) * | 2014-11-29 | 2015-03-04 | 江西洪都航空工业集团有限责任公司 | S-section sag-free aircraft frame and rib sheet metal part springback compensation calculation method |
Non-Patent Citations (2)
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| 孙世岩: "基于CATIA的高强钢板回弹几何补偿算法研究与***开发", 《中国优秀硕士学位论文全文数据库-工程科技Ⅱ辑》 * |
| 韩盛夏: "基于回弹的液压成形模快速设计技术研究", 《中国优秀硕士学位论文全文数据库-工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033563A (en) * | 2018-07-06 | 2018-12-18 | 江西洪都航空工业集团有限责任公司 | One kind being used for spring clip part transition technique digital-to-analogue modeling method |
| CN111723452A (en) * | 2019-03-22 | 2020-09-29 | 东汉新能源汽车技术有限公司 | Calculation method of panel rebound warpage and optimization method of panel rebound warpage |
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Application publication date: 20151111 |