CN104858320A - Press fitting method - Google Patents
Press fitting method Download PDFInfo
- Publication number
- CN104858320A CN104858320A CN201410735075.4A CN201410735075A CN104858320A CN 104858320 A CN104858320 A CN 104858320A CN 201410735075 A CN201410735075 A CN 201410735075A CN 104858320 A CN104858320 A CN 104858320A
- Authority
- CN
- China
- Prior art keywords
- press fitting
- pressing
- flange
- present
- insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/026—Reinforcing the connection by locally deforming
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a press fitting method. The press fitting method comprises three steps as follows: flanging, pre-press fitting and press fitting of a plate material, wherein in the step of flanging, a flanging filleted corner R ranges from 3.5 mm to 4.5 mm; in the step of pre-press fitting, a pre-press fitting angle A1 ranges from 30 degrees to 45 degrees; in the step of press fitting, the height A of the head of a positive pressure insert ball ranges from 3 mm to 5 mm, and the width B of the head of the positive pressure insert ball ranges from the difference obtained by subtracting the thickness of an inner plate and 0.5 mm from 2.4 mm to the difference obtained by subtracting the thickness of the inner plate from 2.4 mm. With the adoption of the press fitting method, the manufacture precision of parts adopting a ball head structure can be improved and meets parameter requirements of national regulations for parts adopting the ball head structure.
Description
Technical field
The present invention relates to automotive field, particularly the compression method of front engine hood of automobile plate.
Background technology
The front engine cover plate assembly of one of the strength member in automobile panel, its existing design form in front windshield position as shown in Figure 1, cover plate outer border bound edge is only required at the air regulator position of the front engine cover plate of existing design, after this structure only needs flange during fabrication, malleation just can realize, there is the simple advantage of technique, but when there is traffic accident in the front engine cover plate of this existing structure, when particularly there is forward collision, likely crash through windscreen, align copilot personnel and damage.Therefore, country has put into effect special EXTERNAL PROJECTION regulation, and before requiring, engine cover plate is designed to the ball head structure shown in Fig. 2, and had clear stipulaties to parameter H, R1, L1 and L2, its numerical requirements is: L1=6mm; L2=4.5mm; H=2.4mm; R1=2.mm.
Existing Sheet Metal Forming Technology is difficult to the numerical requirements reaching afore mentioned rules, causes element precision not up to standard, cannot meet national legislation requirement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of compression method that can meet EXTERNAL PROJECTION laws and regulations requirement parameter ball head structure.
For achieving the above object, compression method of the present invention, comprises and carries out flange, pre-pressing and pressing three steps to plate material, and in flange step, its flange filleted corner R is 3.5 ~ 4.5mm; In pre-pressing step, pre-pressing angle A 1 is 30 ° ~ 45 °; In pressing step, the bulb position height A of malleation insert is 3 ~ 5mm, and width B is (in 2.4-plate thickness-0.5) mm ~ (in 2.4-plate thickness) mm.
Preferably, in flange step, the scope crossing the amount of turning over G is 0.5 ~ 2.0mm.
Preferably, in pre-pressing step, the profile angle A 2 of the precompressed insert of diel is 30 ° ~ 50 °.
Preferably, in pre-pressing step, the border L3 of counterdie insert is 1 ~ 50mm.
Beneficial effect of the present invention is: by increasing pre-pressing step in the method to existing flange and pressing, parameter in each step is selected simultaneously, the accuracy of manufacture of ball head structure part can be improved, meet the parameter request of national legislation to ball head structure part.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of engine cover plate air regulator position flange before prior art;
Fig. 2 is the schematic diagram of the front engine cover plate air regulator position flange with ball head structure;
Fig. 3 is the schematic diagram of compression method first step flange of the present invention;
Fig. 4 is the schematic diagram of compression method second step pre-pressing of the present invention;
Fig. 5 is the schematic diagram of compression method third step of the present invention pressing;
Fig. 6 is the change schematic diagram of the bulb position height A value of the malleation insert of compression method third step of the present invention pressing;
Reference numeral
1 precompressed insert 2 counterdie insert 3 malleation insert
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
For producing the ball head structure meeting EXTERNAL PROJECTION laws and regulations requirement parameter, compression method of the present invention comprises flange, pre-pressing and pressing three steps.Select parameter in each step, the span of these parameters produces the key factor that satisfy regulatory requires product simultaneously, below in embodiment the span of parameter be applicable to the sheet material that thickness is less than 1mm.
First step of the present embodiment is flange, as shown in Figure 3, mainly selects the number range of flange filleted corner R in this step.The size of flange filleted corner R determines the size of ball head structure, and empirical tests, flange filleted corner R span is 3.5 ~ 4.5mm, if R is greater than 4.5mm, then bulb is too high, if R is less than 3.5mm, then bulb is too small.
In this step, the parameter crossing the amount of turning over G also has corresponding requirement, and the size crossing the amount of turning over G determines the gap of front windshield, the span crossing the amount of turning over G is 0.5 ~ 2.0mm, if G is greater than 2.0mm, then the gap of front windshield is too small, if G is less than 0.5mm, then the excesssive gap of front windshield.
The second step of the present embodiment is pre-pressing, and as shown in Figure 4, the key parameter in this step is part pre-pressing angle A 1, A1 span is 30 ° ~ 45 °, if A1 is greater than 45 °, can cause vertical press-fit difficulty; If A1 is less than 30 °, then pre-pressing difficulty.
In this step, corresponding requirement is also had to the selection of the profile angle A 2 of the precompressed insert 1 of diel and the border L3 of counterdie insert 2.Wherein, the angle design of A2 depends on the selection of part pre-pressing angle A 1, and angle preferably 0 to 5 degree larger than the angle of A1 of A2, therefore, in the present embodiment, the span of A2 angle is 30 ° ~ 50 °.The border L3 of counterdie insert is the interference avoided with insert installing plate or edge-folding mechanism, and its span is 1 ~ 50mm, if L3 is greater than 50mm, then can interfere with insert installing plate or edge-folding mechanism; If L3 is less than 1mm, then there will be because part location is unstable, casting deformation, processing correct error etc. is unsettled bottom causing part boundary to leak outside when causing being shaped.
3rd step is pressing, and as shown in Figure 5, the key parameter in this step is bulb position height A value and the width B value of malleation insert 3.The span of height A is 3 ~ 5mm, if A is less than 3mm, can weigh bulb wounded; If A is greater than 5mm, then bulb molding effect is bad.The span of width B is that (front engine cover plate assembly is integrated by being pressed into by outside plate and inner panel (in 2.4-plate thickness-0.5) mm ~ (in 2.4-plate thickness) mm, described interior plate thickness refers to the thickness of plate material in front engine cover plate assembly), if B value is less than (in 2.4-plate thickness-0.5) mm, then bulb can be weighed wounded; If B value is greater than (in 2.4-plate thickness-0.5) mm, then bulb molding effect is bad.
In the present embodiment, as shown in Figure 6, the value of B is (in 2.4-plate thickness-0.5) mm, in the 150mm region of distance two side corner sections R point of contact F, namely in C region, the value of A is all 3.5mm, in 150mm transitional region, namely in D region, the value of A increases to 5.0mm by 3.5mm gradual change, in other regions, namely in E district, the value of A is 5.0mm.It should be noted that, the span of gradation zone is mainly determined according to the contour shape of part, does not generally do concrete regulation, and the value of gradation zone is 150mm in the present embodiment.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (4)
1. a compression method, is characterized in that: comprise and carry out flange, pre-pressing and pressing three steps to plate material, and in flange step, its flange filleted corner R is 3.5 ~ 4.5mm; In pre-pressing step, pre-pressing angle A 1 is 30 ° ~ 45 °; In pressing step, the bulb position height A of malleation insert is 3 ~ 5mm, and width B is (in 2.4-plate thickness-0.5) mm ~ (in 2.4-plate thickness) mm.
2. compression method as claimed in claim 1, is characterized in that: in flange step, and the scope crossing the amount of turning over G is 0.5 ~ 2.0mm.
3. compression method as claimed in claim 1, it is characterized in that: in pre-pressing step, the profile angle A 2 of the precompressed insert of diel is 30 ° ~ 50 °.
4. compression method as claimed in claim 1, it is characterized in that: in pre-pressing step, the border L3 of counterdie insert is 1 ~ 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735075.4A CN104858320A (en) | 2014-12-04 | 2014-12-04 | Press fitting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410735075.4A CN104858320A (en) | 2014-12-04 | 2014-12-04 | Press fitting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104858320A true CN104858320A (en) | 2015-08-26 |
Family
ID=53904735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410735075.4A Pending CN104858320A (en) | 2014-12-04 | 2014-12-04 | Press fitting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858320A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002102957A (en) * | 2000-09-28 | 2002-04-09 | Toyota Auto Body Co Ltd | Roll hemming device and roll hemming machining method using the same |
| US20060000255A1 (en) * | 2004-07-01 | 2006-01-05 | Dominique Baulier | Method for performing a 180 degree hem and apparatus for performing the same |
| CN101678431A (en) * | 2007-01-15 | 2010-03-24 | Edag有限公司 | Sheet-metal composite, method for joining sheets and joining device |
| CN102179449A (en) * | 2009-12-25 | 2011-09-14 | 本田技研工业株式会社 | Panel structure and manufacturing method thereof |
| CN203541309U (en) * | 2013-11-06 | 2014-04-16 | 北汽福田汽车股份有限公司 | Pressing device |
| US20140220381A1 (en) * | 2011-09-02 | 2014-08-07 | Constellium France | Clad sheet for motor vehicle body |
-
2014
- 2014-12-04 CN CN201410735075.4A patent/CN104858320A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002102957A (en) * | 2000-09-28 | 2002-04-09 | Toyota Auto Body Co Ltd | Roll hemming device and roll hemming machining method using the same |
| US20060000255A1 (en) * | 2004-07-01 | 2006-01-05 | Dominique Baulier | Method for performing a 180 degree hem and apparatus for performing the same |
| CN101678431A (en) * | 2007-01-15 | 2010-03-24 | Edag有限公司 | Sheet-metal composite, method for joining sheets and joining device |
| CN102179449A (en) * | 2009-12-25 | 2011-09-14 | 本田技研工业株式会社 | Panel structure and manufacturing method thereof |
| US20140220381A1 (en) * | 2011-09-02 | 2014-08-07 | Constellium France | Clad sheet for motor vehicle body |
| CN203541309U (en) * | 2013-11-06 | 2014-04-16 | 北汽福田汽车股份有限公司 | Pressing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105073506B (en) | Bumper | |
| WO2013191256A1 (en) | Method and apparatus for producing press-moulded article | |
| CN102910212A (en) | Magnesium alloy cold pressing automobile fender and forming process thereof | |
| TWI549765B (en) | Method for manufacturing structural member for automobile body and press forming device | |
| JP5987385B2 (en) | Press molding method of hat-shaped member curved in longitudinal direction | |
| US20180104735A1 (en) | Press-working apparatus, press-working method, and press-molded product | |
| US11052444B2 (en) | Method for manufacturing press formed product | |
| CN106061643A (en) | Process and device for producing hot-formed wheel naves | |
| JP2018020349A (en) | Method for designing mold and method for manufacturing press molding | |
| CN207579811U (en) | Bumper reinforcement | |
| CN106018129A (en) | Evaluation method for hot stamping fracture property of automobile part | |
| CN102172733A (en) | Process for removing torsion springback in formation of longitudinal beam by using local deformation | |
| CN105127288A (en) | Method for manufacturing front longitudinal beam of automobile frame | |
| EP2581316B1 (en) | Seamless can body | |
| JP2018020350A (en) | Method for manufacturing press molding | |
| KR20180105216A (en) | Manufacturing method of press molded article | |
| KR20150017935A (en) | Variable upform equipment for decreasing springback in automotive structural panel and method thereof | |
| CN104858320A (en) | Press fitting method | |
| EP2985091B1 (en) | Press molding and manufacturing method therefor | |
| CN104001808B (en) | The diel of automobile exhaust system housing | |
| CN102935865A (en) | Automobile side outer panel threshold area structure and design method thereof | |
| CN209096835U (en) | A kind of side wall top cover connecting band side curtain airbag guide function structure | |
| CN104226853A (en) | Automobile girder forming stamping process | |
| CN102975585B (en) | Matching reforming method for five surfaces of lower reinforcing plate of front shock absorber base and upper plate of front shock absorber base | |
| JP2020116632A (en) | Method for designing press molded article, press molded article and method for manufacturing press molded article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |
|
| RJ01 | Rejection of invention patent application after publication |