CN105537400B - It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die - Google Patents
It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die Download PDFInfo
- Publication number
- CN105537400B CN105537400B CN201510920526.6A CN201510920526A CN105537400B CN 105537400 B CN105537400 B CN 105537400B CN 201510920526 A CN201510920526 A CN 201510920526A CN 105537400 B CN105537400 B CN 105537400B
- Authority
- CN
- China
- Prior art keywords
- filling liquid
- cavity plate
- punch
- pin
- mandril
- 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.)
- Active
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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
Abstract
The invention discloses a kind of punching presses for being applicable to large-scale auto body panels and local hydraulic pressure composite forming die, include punch-pin, cavity plate, blank holder, pedestal, filling liquid rubber pocket, mandril, elastic device.Its convex mould or cavity plate are consistent with part type face; the type face after removing small feature is taken in the type face of corresponding cavity plate or punch-pin, while the corresponding mold entity area of small feature accordingly is emptied, and sets filling liquid rubber pocket; mandril is provided below in rubber pocket, and mandril connect fixed with pedestal.It is divided into stamping stage and hydroforming stage during forming.The maximum pressure that is adjusted to be more than stamping maximum plastic force by the support force of elastic device before forming and provide less than press ensures that punch-pin or cavity plate will not be moved when stamping.After stamping, as press slide continues to move to, elastic device is compressed, and punch-pin or cavity plate movement, mandril squeeze filling liquid rubber pocket, and local hydroforming is carried out using the incompressible principle of liquid.
Description
Technical field
The present invention relates to a kind of shaping dies for being applicable to large-scale auto body panels, specially one kind is applicable to large size
The stamping and local hydraulic pressure composite forming die of automobile panel.
Background technology
With the fast development of the industry such as aviation, automobile, the materials application such as aluminium alloy, high-strength steel sheet is increasingly extensive, pole
It is big to increase that required precision is high, size is big, drawing depth is deep and the forming hardly possible of large-scale covering containing local complex characteristic
Degree.Stamping is the major way of current large-scale covering forming, and this method is by the mold that is mounted on forcing press to material
Material applies pressure, it is made to generate plastic deformation, the shape of part needed for acquisition.This method process is efficient, but for office
Tend to the phenomenon that drawing crack or corrugation occur during portion's complex characteristic forming.Hydroforming comes by using liquid as power transmission medium
Realize plate forming, can effectively improve almag, titanium alloy etc materials forming property, it is very multiple shape to be shaped
Miscellaneous part, but when this method is in face of the part forming that drawing depth is deep, size is big, the filling liquid time is long, and efficiency is low, and required liquid
Pressure is big, to molding high standard of sealing property.
When large-scale covering is stamping, often due to parts locally is complex-shaped, material flowability is insufficient during punching press,
Part is susceptible to the phenomenon that drawing crack or corrugation.
Invention content
In view of the shortcomings of the prior art, the present invention proposes a kind of punching press for being applicable to large-scale auto body panels
With local hydraulic pressure composite forming die, this mold can first pass through punching press during once-forming and complete part global shape
Forming, then pass through local hydraulic pressure complete local feature forming.
To achieve these goals, the present invention realizes by the following technical solutions：
A kind of punching press for being applicable to large-scale auto body panels and local hydraulic pressure composite forming die, can be once-forming
Punching press and local hydraulic pressure combined shaping are realized in the process, it is characterised in that mold includes punching press and local two portions of hydroforming
Point, wherein punching course completes the global shape forming of part, and local hydroforming is formed for small feature, punching press and liquid
Pressing formation is carried out continuously, and can be completed in a stroke.
Further, the punching press and local hydraulic pressure composite forming die, it is characterized in that：Punch-pin (4) or cavity plate (1) arrangement
Flexible device (6) is supported, and the small feature entity region corresponding to punch-pin (4) or cavity plate (1) is emptied, built-in filling liquid rubber
Capsule (9), filling liquid rubber pocket (9) arranged beneath have mandril (5), and mandril links together with pedestal (7) and limits upper and lower movement.
Further, the punch-pin (4) or the small feature corresponding to cavity plate (1) need to determine characteristic boundary by stamping simulation
Then curve carries out drawing for punch-pin (4) or cavity plate (1) according to the convexo concave of boundary curve and small feature opposing perimeter curved surface
Sky, empties the corresponding cavity plate in part (1) or punch-pin (4) mould surface portion retains the type face consistent with small feature.
Further, the support force of the elastic device (6) is more than the maximum plastic force of part punching forming, less than pressure
Machine pressure applied.The elastic component such as helical spring, nitrogen gas spring or hydraulic cylinder may be used in elastic device.
Further, the amount of filling liquid rubber pocket (9) institute's filling liquid body (10) need according to the position of mandril (5) end and
Shape determines, filling liquid rubber pocket (9) is made to keep the height consistent with small feature peripheral type face before extrusion, and filling liquid rubber pocket also may be used
To be substituted with the compressible rubber for not needing to filling liquid.
Further, the determining needs of the location and shape of the mandril (5) end are determined according to the stroke of hydroforming,
Deflection and small feature of the filling liquid rubber pocket (9) at the end of stroke is made to contain volume suitable.Mandril (5) side and mold simultaneously
Entity hole surface engagement is preferable.
Further, when being shaped applied to servo-pressing machine, elastic device (6) can be removed, is directly mounted on punch-pin (4)
On mold base (7), increase hydraulic pump, after punching stroke, servo-pressing machine carries out pressurize, by hydraulic pump drive liquid
Cylinder pressure carries out leather bag filling liquid local hydroforming.
Mold of the present invention takes full advantage of the characteristics of stamping and hydroforming, and can effectively improve has
The forming of the large-scale covering of complex characteristic.
Description of the drawings
Fig. 1 is the covering needed to stamp
Fig. 2 is stamping simulation model
Fig. 3 is forming limit diagram
Fig. 4 is the thickness cloud atlas of small characteristic
Fig. 5 is stamping die model
Specific embodiment
Specific embodiment is illustrated below in conjunction with attached drawing：
Fig. 1 is the covering needed to stamp, and there are one small features at the top of the part, are the convex closure with cross-rib.Punching press
Mode is using cavity plate in upper, single action forming mode of the punch-pin under.
It is incited somebody to action during using punching press and hydraulic pressure combined shaping, the global shape of part by punching press as shown in Fig. 2, obtained.Part
Has character shape as shown in figure 3, being obtained by hydroforming.
When carrying out punching press with hydraulic pressure combined shaping using mechanical press, mould structure is as shown in Figure 4.It is convex during forming
Mould 4 is placed on pedestal support spring 6, and the support force of adjustment pedestal support spring 6 is more than punching press maximum plastic force, liquid 10
Included, be arranged within the punch-pin 4 emptied by leather bag 9, by predefine hydraulic pressure amount punching press when hydraulic pressure leather bag with it is small
Feature peripheral curved surface is highly consistent.Since the support force of support spring 6 has been more than maximum plastic force, during punching press global feature
Punch-pin 4 remains stationary as.Punching course terminates after punch-pin 4 is in molding state with cavity plate 1, and part global shape obtains therewith.
Continue motion compresses support spring 6, punch-pin 4, cavity plate 1, blank holder 2 and plate 3 down with forcing press to continue to move down, hydraulic pressure
Mandril 5 is fixed on mold base 7, squeezes leather bag 9, and since liquid 10 is incompressible, small feature is squeezed by hydraulic pressure 10
Pressure leather bag 9 is shaped.
When carrying out punching press with hydraulic pressure combined shaping using servo-pressing machine and hydraulic press, mould structure is as shown in Figure 5.Forming
When, punch-pin 4 place mold base 7 on it is fixed, liquid 10 is included by leather bag 9, is arranged within the punch-pin 4 emptied, lead to
Cross that predefine hydraulic pressure leather bag and small feature peripheral curved surface when the amount of hydraulic pressure causes punching press highly consistent.At punch-pin 4 and cavity plate 1
Punching course terminates after molding state, and part global shape obtains therewith.Then the guarantor of servo-pressing machine and hydraulic press is utilized
Function is pressed to carry out pressurize, and during pressurize, pump high pressure oil by hydraulic oil pump 6 pushes away from petroleum pipeline 12 to hydraulic cylinder 5
Dynamic mandril 11, which moves upwards, squeezes leather bag 9, and since liquid 10 is incompressible, small feature squeezes leather bag 9 by hydraulic pressure 10 and obtains
To forming.
Claims (4)
1. a kind of punching press for being applicable to large-scale auto body panels and local hydraulic pressure composite forming die, it is characterised in that mold packet
Containing stamping and local two parts of hydroforming, wherein punching course completes the global shape forming of part, local hydraulic pressure
The local feature of part is formed in shaped needle, and stamping and hydroforming is carried out continuously, and is completed in a stroke；It is convex
It is disposed with elastic device (6) between mould (4) or cavity plate (1) and pedestal (7) to be supported, corresponding to punch-pin (4) or cavity plate (1)
Small feature entity region is emptied, built-in filling liquid rubber pocket (9), and filling liquid rubber pocket (9) arranged beneath has a mandril (5), mandril with
Pedestal (7), which links together, limits the up and down motion of filling liquid rubber pocket (9)；Small feature corresponding to punch-pin (4) or cavity plate (1) needs
Characteristic boundary curve is determined by stamping simulation, then according to the convex-concave feelings of characteristic boundary curve and small feature opposing perimeter curved surface
Condition carries out emptying for punch-pin (4) or cavity plate (1), cavity plate (1) or the corresponding punch-pin of punch-pin (4) etched-off area (4) or cavity plate (1)
Region retain the type face consistent with small feature；The support force of the elastic device (6) is more than the most great achievement of part punching forming
Shape power, less than forcing press pressure applied, elastic device is using helical spring or nitrogen gas spring or hydraulic cylinder；Filling liquid rubber pocket
(9) the amount needs of institute's filling liquid body (10) are determined according to the location and shape of mandril (5) end, are squeezing filling liquid rubber pocket (9)
It is preceding to keep the height consistent with small feature peripheral type face.
2. a kind of punching press for being applicable to large-scale auto body panels as described in claim 1 and local hydraulic pressure combined shaping mould
Tool, the filling liquid rubber pocket replace with the compressible rubber for not needing to filling liquid.
3. a kind of punching press for being applicable to large-scale auto body panels as described in claim 1 and local hydraulic pressure combined shaping mould
Tool, the determining needs of the location and shape of mandril (5) end are determined according to the stroke of hydroforming so that filling liquid rubber pocket (9)
Deflection and small feature containing volume at the end of stroke is suitable, while mandril (5) side and mold entity hole surface are matched
It closes.
4. a kind of punching press for being applicable to large-scale auto body panels as claimed in claim 2 and local hydraulic pressure combined shaping mould
Tool when being shaped applied to servo-pressing machine or hydraulic press, removes elastic device (6), directly installs punch-pin (4) or cavity plate (1)
On mold base (7)；Increase hydraulic pump, after punching stroke, pressurize is carried out with servo-pressing machine or hydraulic press, by
Hydraulic pump drive hydraulic cylinder squeezes filling liquid rubber pocket and the local feature of part is shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920526.6A CN105537400B (en) | 2015-12-11 | 2015-12-11 | It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920526.6A CN105537400B (en) | 2015-12-11 | 2015-12-11 | It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105537400A CN105537400A (en) | 2016-05-04 |
| CN105537400B true CN105537400B (en) | 2018-07-10 |
Family
ID=55817224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510920526.6A Active CN105537400B (en) | 2015-12-11 | 2015-12-11 | It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105537400B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424426B (en) * | 2016-12-07 | 2018-01-23 | 贵州黎阳航空动力有限公司 | A kind of double wall steep-taper inner cone closing device |
| CN108927453A (en) * | 2017-05-25 | 2018-12-04 | 株洲时代新材料科技股份有限公司 | A kind of spherical surface stainless steel molding die |
| CN109290456A (en) * | 2018-08-02 | 2019-02-01 | 哈尔滨飞机工业集团有限责任公司 | A kind of rubber pad forming die design method of variable cross-section higher curvature difference radome fairing part |
| CN113042620A (en) * | 2021-03-09 | 2021-06-29 | 北京航空航天大学 | Bending and bulging composite forming method for small-curvature aluminum alloy skin piece |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02207926A (en) * | 1989-02-07 | 1990-08-17 | Suzuki Motor Co Ltd | Hydraulic press forming device |
| JP4129621B2 (en) * | 2002-07-08 | 2008-08-06 | トヨタ自動車株式会社 | Press mold |
| JP4052185B2 (en) * | 2003-06-11 | 2008-02-27 | 日産自動車株式会社 | Hydraulic forming equipment |
| JP4807550B2 (en) * | 2005-02-10 | 2011-11-02 | 日産自動車株式会社 | Liquid pressure forming method and liquid pressure forming apparatus |
| US8701453B2 (en) * | 2010-12-23 | 2014-04-22 | Ford Global Technologies, Llc | Method of reducing cycle time in a hydro-mechanical forming process and a tool for hydro-mechanically forming a part |
| CN102248066A (en) * | 2011-06-09 | 2011-11-23 | 北京航空航天大学 | Drawing and hydraulic integrated forming method |
| CN102615484B (en) * | 2012-04-25 | 2014-10-29 | 湖南大学 | Convex-hull type blulletproof helmet forming method |
| CN102873165B (en) * | 2012-09-03 | 2014-11-05 | 北京航空航天大学 | Shock hydraulic composite forming process for small feature part of complex part |
-
2015
- 2015-12-11 CN CN201510920526.6A patent/CN105537400B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105537400A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105537400B (en) | It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure composite forming die | |
| US5016458A (en) | Method and device for pressing sheet material with a deformable punch under a ram | |
| CN102873165A (en) | Shock hydraulic composite forming process for small feature part of complex part | |
| CN2787326Y (en) | Sheet material forming die based on pressure transmission of viscoelastic medium | |
| CN107913936B (en) | A kind of hair lid punching press and filling liquid connecting shaping process mould and hair lid forming method | |
| CN107983845A (en) | Metallic plate punching shaping annular anti-wrinkling mould and application | |
| CN107994138B (en) | Soft package lithium ion battery aluminum plastic film shell punching structure and method | |
| JP2008518788A (en) | A method of forming a metal plate having a large surface into a shaped part (for example, an outer panel of a vehicle body) | |
| CN104785630B (en) | Supercharging composite die and method of work thereof | |
| US8683836B2 (en) | Method and apparatus for forming sharp styling lines on metal panels | |
| CN103302184B (en) | Supercharging diel | |
| CN107282781A (en) | A kind of metal plate brake forming mould | |
| CN207103590U (en) | A kind of metal plate brake forming mould | |
| CN207563736U (en) | A kind of low Carbon Manganese ball powder metallurgy forming mold | |
| CN203281696U (en) | Hydroforming device for automobile seat part | |
| CN201102049Y (en) | Hydroform device for vehicle seat part | |
| CN108043941A (en) | A kind of diaphragm of rubber hydraulic vibration building mortion and its processing technology | |
| CN105964801A (en) | Stamping die | |
| CN101342557A (en) | Hydroform mechanism for processing vehicle seat parts | |
| CN207447109U (en) | A kind of bilayer shatter-resistant rapid shaping stamping die | |
| CN205629128U (en) | Cell -phone interface plastic mould | |
| CN203091534U (en) | Bottle cap bulging die with stereo patterns | |
| CN203140581U (en) | Bucket part necking machining die | |
| CN203610475U (en) | Anti-deformation negative clearance elastic fine blanking die | |
| CN105414325B (en) | It is applicable to the punching press of large-scale auto body panels and local hydraulic pressure combined shaping method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |