CN108176764B - Forming process of square automobile chassis parts - Google Patents
Forming process of square automobile chassis parts Download PDFInfo
- Publication number
- CN108176764B CN108176764B CN201711444599.8A CN201711444599A CN108176764B CN 108176764 B CN108176764 B CN 108176764B CN 201711444599 A CN201711444599 A CN 201711444599A CN 108176764 B CN108176764 B CN 108176764B
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- Prior art keywords
- square
- single sheet
- automobile chassis
- angle
- forming
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000000047 product Substances 0.000 claims abstract description 22
- 238000004080 punching Methods 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000012467 final product Substances 0.000 claims abstract description 5
- 238000013459 approach Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003754 machining Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a molding process of square automobile chassis parts, which comprises the following steps: preforming and forming; the structure of the square automobile chassis parts: the square automobile chassis component body comprises a left square component single sheet and a right square component single sheet, wherein the left square component single sheet and the right square component single sheet are symmetrically arranged; the left square part single sheet or the right square part single sheet comprises a bottom provided with a U-shaped notch, the periphery of the bottom plate vertically extends to form a side surface, and an R angle formed by the side surface approaches to a right angle; the method comprises the steps of preforming the original square surface into a curved surface shape, forming an arc-shaped surface formed by preforming into a square surface with an R angle approaching to a right angle, and punching a bottom notch to obtain a final product. The method has the advantages of effectively avoiding a series of problems of cracking, stacking, die scrapping and the like caused by the design of high material strength, thick material thickness, small R angle and the like of square closed products during direct forming.
Description
Technical Field
The invention relates to a processing method of automobile chassis parts, belongs to a cold stamping forming process, and particularly relates to a forming process of square automobile chassis parts.
Background
In modern society, along with the enhancement of environmental protection consciousness of people, people often consider more in the aspect of environmental protection and energy saving in production life, so that the design of products is more complicated to meet and reach the original quality requirement, but the design makes the production difficult to increase, and many products can not be processed and finished by the traditional process.
For example, more and more automobile chassis parts make the shape of the product more complicated and the processing more difficult, and the shape problem of the product is also highlighted. Particularly, due to the particularity of the shape of the square automobile chassis part, a series of problems of cracking, stacking, die scrapping and the like caused by direct forming due to the design of high material strength, thick material thickness, small R angle and the like are caused, the existing stamping process has the problems of incapability of forming, material extruding, material stacking, cracking, hidden cracking and the like, and the product cannot be formed by direct forming according to the existing stamping process; mostly adopting casting molding; a cold stamping forming process is also adopted, but the preparation process is complicated, and four forming processes are often required to avoid the technical problems: forming a certain angle, forming a certain angle again, and forming a final product; however, unnecessary loss is caused by manual and machine loss, the consistency of the obtained product cannot be ensured, and the product has process creases with different degrees on the surface of the product due to more working procedures (similar problems exist in factories); if the square closing piece is formed in one step, the material is not easy to fall off, the material is piled and extruded at the R corner, the gap of the die is not uniform, the surface of the die is directly abraded due to the thick part of the product, the product is napped, and the die is further cracked and scrapped.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the forming process of the square automobile chassis parts, which can effectively avoid a series of problems of cracking, stacking, die scrap and the like caused by direct forming of square closed products due to the design of high material strength, thick material thickness, small R angle and the like.
In order to solve the technical problems, the invention adopts the technical scheme that: a forming process of square automobile chassis parts comprises the following steps: preforming and forming;
the structure of the first-prepared square automobile chassis part is as follows: the square automobile chassis component body comprises a left square component single sheet and a right square component single sheet, wherein the left square component single sheet and the right square component single sheet are symmetrically arranged; the left square part single sheet or the right square part single sheet comprises a bottom provided with a U-shaped notch, the periphery of the bottom plate vertically extends to form a side surface, and an R angle formed by the side surface approaches to a right angle;
the preforming comprises the following steps: according to the drawing size of the specific square automobile chassis part structure, reserving machining allowances of each subsequent process, wherein the specific machining allowances are 1-5mm more than the thickness of a finished product, cutting out a planar material steel plate of the square automobile chassis part for manufacturing from the upper surface of a raw material large steel plate by using a sawing machine, forming a left square part single sheet or a right square part single sheet into a group of planar material steel plates, and then punching out the notch position and the side surface of the bottom by using a punching machine, wherein the side surface is positioned at the left end and the right end of the square automobile chassis part and is punched into an arc surface; the drawing is a detailed engineering exploded view of parts of a square automobile chassis;
the molding comprises the following steps: and forming the arc-shaped surface formed by preforming into a square surface with the R angle approaching to a right angle, and punching the bottom notch to obtain a final product.
Preferably, the planar material steel plate forming the upper left square part single sheet or the right square part single sheet into a group is provided with a fixing hole at the bottom, and the two fixing holes are used for fixing the blank to realize accurate punch forming.
Preferably, the radian of the arc-shaped surface is consistent with that of the R angle, namely the radian of the arc-shaped surface and that of the R angle are on the same circle; the degree of accuracy at R angle can be guaranteed in the setting of this structure, and the arcwall face becomes straight face simultaneously, and the problem of windrow fracture when unnecessary material is piled to R angle department and has just avoided direct forming.
Drawings
FIG. 1 is a schematic view of a one-side monolithic structure of a square automotive chassis part of the present invention.
FIG. 2 is a schematic structural view of a square automobile chassis component of the present invention.
FIG. 3 is a schematic structural view of a preformed square automotive chassis part blank of the present invention.
FIG. 4 is a schematic structural view of a square automobile chassis part formed without punching out a bottom notch material.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
The structure of the square automobile chassis component part is processed on the basis of the structure shown in the attached figures 1-2, and the structure of the square automobile chassis component part is as follows: the automobile chassis component comprises a square automobile chassis component body 1, wherein the square automobile chassis component body comprises a left square component single sheet 2 and a right square component single sheet 3, and the left square component single sheet and the right square component single sheet are symmetrically arranged; the left square part single sheet or the right square part single sheet comprises a bottom 5 provided with a U-shaped notch 4, a side surface 6 vertically extends from the periphery of the bottom plate, and an R angle 7 formed by the side surface approaches to a right angle; the flat steel plate which forms the upper left square part single sheet or the right square part single sheet into a group is provided with a fixing hole 8 at the bottom, the two fixing holes are helpful for fixing the blank, and accurate punch forming is realized
The specific stamping process comprises the following steps:
(1) the preforming comprises the following steps: according to the drawing size of the specific square automobile chassis part structure, reserving machining allowances of each subsequent process, wherein the specific machining allowances are 1-2mm more than the thickness of a finished product, cutting out a planar material steel plate of the square automobile chassis part for manufacturing from the upper surface of a raw material large steel plate by using a sawing machine, forming a left square part single sheet or a right square part single sheet into a group of planar material steel plates, and then punching out the notch position and the side surface of the bottom by using a punching machine, wherein the side surface is positioned at the left end and the right end of the square automobile chassis part and is punched into an arc surface; the drawing is an engineering detail exploded view of the lower control arm;
(2) the molding comprises the following steps: and forming the arc-shaped surface formed by preforming into a square surface with the R angle approaching to a right angle, and punching the bottom notch to obtain a final product.
As shown in fig. 3: the radian of the arc-shaped surface is consistent with that of the R angle, namely the radian of the arc-shaped surface and the radian of the R angle are on the same circle; the degree of accuracy at R angle can be guaranteed in the setting of this structure, and the arcwall face becomes straight face simultaneously, and the problem of windrow fracture when unnecessary material is piled to R angle department and has just avoided direct forming.
The processing technology of the invention solves the problem of product design which is difficult to be formed in one step, in particular to a product with a quadrilateral structure, by adding a pre-forming technology, the invention performs the original quadrilateral surface into a curved surface shape for the first time, and then forms the curved surface into a square surface; the product shown in fig. 1-2 is in the final formed structural shape, and if the product is directly formed, because the material strength and the thickness are larger, and the R angle is smaller, the straight surfaces of the left side and the right side are difficult to form, and the problem of cracking is easy to occur. Therefore, the present invention solves the problem by a single preforming process, such as the preformed shape of the product shown in fig. 3, if the straight surface 202 is directly formed without the preforming process, the position 201 shown in the figure is easy to form stacking cracks, or the manual and machine losses are increased by forming the product in several steps, but the problems of the cracking and stacking can be solved more certainly. If a preforming process is performed, the curved surface 202 is extruded to be the straight surface 301 of fig. 4 during forming, and the excess material is piled at the position 201, so that the problem of pile cracking during direct forming is avoided. The process effectively solves the problems of cracking and stacking caused by the molding of square closed parts, and ensures that the product is molded smoothly.
Claims (1)
1. A forming process of square automobile chassis parts comprises the following steps: preforming and forming;
the structure of the first-prepared square automobile chassis part is as follows: the square automobile chassis component body comprises a left square component single sheet and a right square component single sheet, wherein the left square component single sheet and the right square component single sheet are symmetrically arranged; the left square part single sheet or the right square part single sheet comprises a bottom provided with a U-shaped notch, the periphery of the bottom is vertically extended with a side surface, and an R angle formed by the side surface approaches to a right angle;
the preforming comprises the following steps: according to the drawing size of the square automobile chassis part structure, reserving machining allowances of each subsequent process, wherein the specific machining allowances are 1-5mm more than the thickness of a finished product, cutting out a planar material steel plate of the square automobile chassis part for manufacturing and a planar material steel plate forming an upper left square part single sheet or a right square part single sheet into a group by using a sawing machine from the upper surface of a raw material large steel plate, and then punching out the notch position and the side surface of the bottom by using a punching machine, wherein the side surface is positioned at the left end and the right end of the square automobile chassis part and is punched into an arc surface; the drawing is an engineering detail exploded view of square automobile chassis parts;
the molding comprises the following steps: forming the arc-shaped surface formed by preforming into a square surface with an R angle approaching to a right angle, and punching a bottom notch to obtain a final product;
the flat material steel plate which forms the upper left square part single sheet or the right square part single sheet into a group is provided with a fixing hole at the bottom;
the radian of the arc-shaped surface is consistent with that of the R angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444599.8A CN108176764B (en) | 2017-12-27 | 2017-12-27 | Forming process of square automobile chassis parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444599.8A CN108176764B (en) | 2017-12-27 | 2017-12-27 | Forming process of square automobile chassis parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108176764A CN108176764A (en) | 2018-06-19 |
| CN108176764B true CN108176764B (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711444599.8A Active CN108176764B (en) | 2017-12-27 | 2017-12-27 | Forming process of square automobile chassis parts |
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| Country | Link |
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| CN (1) | CN108176764B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461856A (en) * | 2018-10-16 | 2019-03-12 | 浙江捷汽车零部件有限公司 | T02 type aluminum battery case shell-machining process |
| CN113618344A (en) * | 2021-08-27 | 2021-11-09 | 青岛春牧机械有限公司 | Processing technology for rolling and forming agricultural mechanical equipment parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2023521C1 (en) * | 1991-02-21 | 1994-11-30 | Научно-исследовательский институт авиационной технологии и организации производства | Method to produce hollow pieces |
| CN101407012A (en) * | 2008-12-04 | 2009-04-15 | 北京日伸电子精密部件有限公司 | Manufacturing method of metal framework for flat panel display |
| CN101628409A (en) * | 2008-07-15 | 2010-01-20 | 施俊兆 | Metal tool box structure and forming method thereof |
| CN105344874A (en) * | 2015-11-17 | 2016-02-24 | 宁波沃特汽车部件有限公司 | Compensation stretching molding technology for chassis part of high-strength plate of automobile |
-
2017
- 2017-12-27 CN CN201711444599.8A patent/CN108176764B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2023521C1 (en) * | 1991-02-21 | 1994-11-30 | Научно-исследовательский институт авиационной технологии и организации производства | Method to produce hollow pieces |
| CN101628409A (en) * | 2008-07-15 | 2010-01-20 | 施俊兆 | Metal tool box structure and forming method thereof |
| CN101407012A (en) * | 2008-12-04 | 2009-04-15 | 北京日伸电子精密部件有限公司 | Manufacturing method of metal framework for flat panel display |
| CN105344874A (en) * | 2015-11-17 | 2016-02-24 | 宁波沃特汽车部件有限公司 | Compensation stretching molding technology for chassis part of high-strength plate of automobile |
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| Publication number | Publication date |
|---|---|
| CN108176764A (en) | 2018-06-19 |
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