CN103624144A - Sheet metal forming technology of front floor threshold girder of automobile - Google Patents
Sheet metal forming technology of front floor threshold girder of automobile Download PDFInfo
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- CN103624144A CN103624144A CN201310594190.XA CN201310594190A CN103624144A CN 103624144 A CN103624144 A CN 103624144A CN 201310594190 A CN201310594190 A CN 201310594190A CN 103624144 A CN103624144 A CN 103624144A
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- front floor
- flange
- blank
- automobile
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Abstract
The invention discloses a sheet metal forming technology of a front floor threshold girder of an automobile. The sheet metal forming technology comprises the following steps that (1) blanking is conducted, wherein blanking is conducted according to the size of the front floor threshold girder and a symmetric opposite-side material is reserved at the inner side of a single-side material at the front end of a blank; (2) flanging is conducted, wherein the two sides of the blank are flanged symmetrically at the same time, the single-side material at the front end of the blank and the opposite-side material form laterally-symmetric flangings; (3) trimming is conducted, wherein the opposite-side material generated after flanging is conducted is cut off, so that the front floor threshold girder with a notch formed in the front end is formed. According to the sheet metal forming technology of the front floor threshold girder of the automobile, force received by parts in the process of flanging is balanced, part deviation caused by force-receiving at a single edge is avoided, the machining accuracy of the parts with flangings at the single side is improved, the parts can satisfy the requirements for shapes and sizes, and the stability of the product quality is improved.
Description
Technical field
The present invention relates to Machining Technology, refer to particularly a kind of automobile front floor sill strip shaping punching compression technology.
Background technology
Sill strip is the important component part of automobile body-in-white, connect gusset and floor, in side impact process to reducing body distortion important role, its section is generally " several " font, wherein, front floor sill strip is designed to be with one-sided flange form jaggy by its front end inner side with environment part lap-joint conventionally, traditional moulding process of front floor sill strip is first by part net shape blanking, at front end, form one little section of one-sided material, then flange moulding punching press, this Sheet Metal Forming Technology forms the situation of only carrying out flange in an independent side at the front end of part, part front end is one-sided stressed, under the effect of this unbalanced force, part is easily offset towards one-sided flange place, make front floor sill strip particularly cannot meet shape of product and tolerance in its front end place, cause part quality unstable.
Summary of the invention
Object of the present invention will provide a kind of automobile front floor sill strip shaping punching compression technology exactly, and this technique has been avoided accessory size skew, has improved part processing precision.
For achieving the above object, the technical solution used in the present invention is: a kind of automobile front floor sill strip shaping punching compression technology, comprises the steps:
1) blanking: the size by front floor sill strip is carried out blanking, and reserved symmetrical to rim charge in the inner side of the one-sided material of blank front end;
2) flange moulding: symmetrical flange is carried out in blank both sides simultaneously, wherein, the one-sided material of blank front end and rim charge is formed to symmetrical flange;
3) deburring: by rim charge is excised after flange moulding, form the notched front floor of front end sill strip.
Further, described step 2) in, after completing symmetrical flange, two side flangings are carried out to wedge shaping simultaneously.
The present invention is in the sill strip process of the processing notched front floor of front end, by the symmetrical side of the one-sided material of part front end being reserved rim charge in blanking operation, then at one-sided material with to rim charge place, carry out flange moulding simultaneously, make two side flanging shape almost symmetries, last in trimming process step content by flange moulding rim charge is excised, and the one-sided flange of remainder is repaiied and is cut into required size, to reach final products requirement; The invention enables part stress equalization in flange forming process, avoided the one-sided stressed part skew causing, improved the machining accuracy with the part of one-sided flange, part is met the demands in shape and size, improved the stability of product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the left sill strip in front floor.
Fig. 2 is the local structure for amplifying schematic diagram at Fig. 1 front end place.
Fig. 3 is blank shape schematic diagram in blanking and punching operation.
Fig. 4 is blank shape schematic diagram in flange molding procedure.
Fig. 5 is the section configuration schematic diagram of Fig. 4.
Fig. 6 is the section configuration schematic diagram of blank in wedge trimming.
Fig. 7 is punching side blow trimming process step schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, be convenient to more clearly understand the present invention, but they do not form restriction to the present invention.
Fig. 1, Figure 2 shows that the left sill strip 1 in front floor of east wind passenger car, and the front end of this left sill strip 1 in front floor is for being with one-sided flange 2 jaggy, and its shaping punching compression technology comprises the following steps:
1) blanking and punching: as shown in Figure 3, during blanking, by the size of front floor sill strip 1, carry out blanking, and reserved symmetrical to rim charge 5 in the inside region of the one-sided material 4 of blank 3 front end, that is: compensate a part of material, be convenient to subsequent handling and carry out herein symmetrical flanging forming;
2) flange moulding: as Fig. 4, shown in Fig. 5, symmetrical flange is carried out in blank both sides simultaneously, complete the main body processing content of the left sill strip 1 in front floor, wherein, the one-sided material of blank front end and rim charge is formed to symmetrical flange, that is: in moulding place of one-sided flange, increase the flange shaping work content of symmetrical side, guarantee the flange moulding simultaneously of the compensation place left and right sides, producing balanced forces, offsets side-play amount.
3) wedge shaping: as shown in Figure 6, wedge trimming is to fail in order to realize flange molding procedure the flange moulding angle requirement realizing, after completing symmetrical flange, two side flangings are carried out to wedge shaping simultaneously, to reach the flange moulding angle requirement of the left sill strip 1 in front floor, wherein, rim charge place is also carried out to symmetrical wedge shaping together.
4) punching side blow deburring: as shown in Figure 7, by after flange moulding to rim charge 5 excision, form the notched front floor of front end sill strip 1, what pare off pre-compensation above is in order to guarantee to realize product net shape size to rim charge 5.
The left sill strip of the right sill strip in front floor and front floor is symmetrical structure, and the structure of its front end is consistent, so the inventive method is equally applicable to the right sill strip in front floor.The present invention a kind ofly prevents that cold stamping part from causing the Sheet Metal Forming Technology of size offset in process of production because friction stree is unbalanced, and this technique has improved part processing precision, has guaranteed the stability of part quality.
Claims (2)
1. an automobile front floor sill strip shaping punching compression technology, comprises the steps:
1) blanking: the size by front floor sill strip is carried out blanking, and reserved symmetrical to rim charge in the inner side of the one-sided material of blank front end;
2) flange moulding: symmetrical flange is carried out in blank both sides simultaneously, wherein, the one-sided material of blank front end and rim charge is formed to symmetrical flange;
3) deburring: by rim charge is excised after flange moulding, form the notched front floor of front end sill strip.
2. automobile front floor sill strip shaping punching compression technology according to claim 1, is characterized in that: described step 2), after completing symmetrical flange, two side flangings are carried out to wedge shaping simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594190.XA CN103624144B (en) | 2013-11-21 | 2013-11-21 | Automobile front floor sill strip shaping punching compression technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594190.XA CN103624144B (en) | 2013-11-21 | 2013-11-21 | Automobile front floor sill strip shaping punching compression technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103624144A true CN103624144A (en) | 2014-03-12 |
| CN103624144B CN103624144B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310594190.XA Active CN103624144B (en) | 2013-11-21 | 2013-11-21 | Automobile front floor sill strip shaping punching compression technology |
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| CN (1) | CN103624144B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513500A (en) * | 2016-11-18 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | MPV vehicle model beam connecting plate punch forming technology and trimming die |
| CN112139352A (en) * | 2020-08-20 | 2020-12-29 | 一汽奔腾轿车有限公司 | Stamping process of automobile front floor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321845A (en) * | 2000-05-18 | 2001-11-20 | Mitsubishi Motors Corp | Reinforcing member and vehicle structure using reinforcing member |
| JP2002282981A (en) * | 2001-03-21 | 2002-10-02 | Honda Motor Co Ltd | Manufacturing method for panel member for automobile |
| US20030097956A1 (en) * | 2001-05-23 | 2003-05-29 | National Steel Car Limited | Well car with cross member and method |
| CN1642804A (en) * | 2002-04-05 | 2005-07-20 | 莲花汽车有限公司 | A method of manufacture of an automobile structure and an automobile structure made by the method |
| CN101952066A (en) * | 2007-12-20 | 2011-01-19 | 株式会社神户制钢所 | Process for producing shaped components from high-strength and ultra high-strength steels |
-
2013
- 2013-11-21 CN CN201310594190.XA patent/CN103624144B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321845A (en) * | 2000-05-18 | 2001-11-20 | Mitsubishi Motors Corp | Reinforcing member and vehicle structure using reinforcing member |
| JP2002282981A (en) * | 2001-03-21 | 2002-10-02 | Honda Motor Co Ltd | Manufacturing method for panel member for automobile |
| US20030097956A1 (en) * | 2001-05-23 | 2003-05-29 | National Steel Car Limited | Well car with cross member and method |
| CN1642804A (en) * | 2002-04-05 | 2005-07-20 | 莲花汽车有限公司 | A method of manufacture of an automobile structure and an automobile structure made by the method |
| CN101952066A (en) * | 2007-12-20 | 2011-01-19 | 株式会社神户制钢所 | Process for producing shaped components from high-strength and ultra high-strength steels |
Non-Patent Citations (1)
| Title |
|---|
| 郑展等: "《冷冲模具设计与应用实例（第1版）》", 30 April 2012, article "级进模", pages: 310-312 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513500A (en) * | 2016-11-18 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | MPV vehicle model beam connecting plate punch forming technology and trimming die |
| CN106513500B (en) * | 2016-11-18 | 2018-05-08 | 安徽江淮汽车集团股份有限公司 | A kind of MPV vehicles cross-beam connecting plate punch forming process and Trimming Die |
| CN112139352A (en) * | 2020-08-20 | 2020-12-29 | 一汽奔腾轿车有限公司 | Stamping process of automobile front floor |
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| Publication number | Publication date |
|---|---|
| CN103624144B (en) | 2015-09-30 |
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