CN102847773A - Frame longitudinal head forming method - Google Patents
Frame longitudinal head forming method Download PDFInfo
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- CN102847773A CN102847773A CN2012103296465A CN201210329646A CN102847773A CN 102847773 A CN102847773 A CN 102847773A CN 2012103296465 A CN2012103296465 A CN 2012103296465A CN 201210329646 A CN201210329646 A CN 201210329646A CN 102847773 A CN102847773 A CN 102847773A
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Abstract
The invention discloses a frame longitudinal head forming method which is designed for solving problems that strength of a frame longitudinal beam is poor or labor intensity is overhigh or processing cost is overhigh and the like generated in existing frame longitudinal head process. The head of the frame longitudinal beam is formed by a hydraulic forming method, and by the frame longitudinal head forming method, advantages of processing convenience, high product strength, low cost and the like are achieved.
Description
Technical field
The present invention relates to a kind of forming method of longitudinal beam, relate in particular to a kind of longitudinal beam drop forming method.
Background technology
Longitudinal beam mostly needs the match wheel the form of the foetus to become drop, and the method for existing making longeron drop has following several:
Method 1: the longeron at the drop place adopts the segmented moulding, is connecting each section by methods such as welding and riveted joints; The problem that this method exists is that working (machining) efficiency is low, and the longitudinal beam intensity of machine-shaping is little, affects the security performance in the automotive operation process;
Method 2: adopt dull and stereotyped blanking to become the drop shape, pass through again mould molding; Although this method has solved the problem of insufficient strength in the method 1, production cost increases substantially, and only material cost has just increased by 30%;
Method 3: adopt high-temperature heating to finish the brake forming of longeron drop; This method will cause high-temperature heating floor side member phenomenon easy to crack.
Comprehensively above-mentioned, a kind of neither to affect longeron intensity, quality is guaranteed and does not cause the high longeron drop forming method of cost be urgent problem so find.
Summary of the invention
For addressing the above problem, the invention provides the large longitudinal beam drop forming method of longitudinal beam intensity that a kind of processing method is simple and produce.
For reaching above-mentioned purpose, longitudinal beam drop forming method of the present invention forms the drop of longitudinal beam for the method that adopts shaped by fluid pressure.
Further, the method for described longitudinal beam drop moulding specifically may further comprise the steps:
Step 1: select or make the required straight beam of longitudinal beam;
Step 2: position of wheel demand and drop parameter according to vehicle frame are selected mould;
Step 3: be installed in described straight beam in the described mould and in mould the filling liquid hydraulic fluid, exerting pressure forms the drop of longitudinal beam.
Further, described mould is adjustable mold, and described mould is adjustable mold, and also comprises the step according to the assembling of drop parameter and debugging mould between described step 2 and described step 3.
Further, described mould is divided into mold and bed die; Described mold is provided with the punch that satisfies position of wheel demand and drop parameter; In described bed die and described punch opposite position, be provided with and the suitable liquid-filled chamber of described punch and the topping up pipe that is connected with described liquid-filled chamber.
Further, described mould is divided into mold and bed die, and described bed die is provided with the die that satisfies position of wheel demand and drop parameter; Described mold is being provided with the topping up pipe with described die opposite position.
Further, described straight beam is the U groove straight beam that the side face becomes the U font.
Further, described longitudinal beam is the bus frame longeron.
The beneficial effect of longitudinal beam drop forming method of the present invention:
1, longitudinal beam drop forming method of the present invention adopts the method for shaped by fluid pressure to form the longeron drop, and process operation is easier, has reduced labour intensity.
2, longitudinal beam drop forming method of the present invention adopts the method for shaped by fluid pressure to form the longeron drop, and the longeron that is processed to form does not have pad or riveted point, and the intensity of longeron is large and best in quality.
3, longitudinal beam drop forming method of the present invention, the grinding tool of employing can be that nonadjustable mould also can be adjustable mold, preferred adjustable mold.The mismachining tolerance of using adjustable mold effectively to avoid non-adjustable mould to use the later stage wearing and tearing to cause, and a cover adjustable mold can be applied to the vehicle frame of different size or kind, improved the mold use frequency, saved production cost.
4, longitudinal beam drop forming method of the present invention, the straight beam of employing are the U groove beam that the side is the U font, when adopting shaped by fluid pressure, have increased the area of hydraulic fluid and/or the effect of punch active force, and moulding is more quick.
6, longitudinal beam drop forming method applied range of the present invention, be suitable for the longitudinal beam moulding of lorry, passenger vehicle, private car and engineering truck, especially suitable large such as this vehicle frame wide cut of passenger vehicle, the drop moulding of the bus frame longeron that the drop parameter is changeable.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention one described longitudinal beam drop forming method;
Fig. 2 is the embodiment of the invention two described U groove straight beam structure schematic diagrames;
Fig. 3 is the embodiment of the invention two described frame carling structure schematic diagrames;
Fig. 4 is the embodiment of the invention three described moulds and straight beam assembly structure schematic diagram;
Fig. 5 is the embodiment of the invention four described moulds and straight beam assembly structure schematic diagram.
The specific embodiment
The present invention will be further described below in conjunction with Figure of description.
Embodiment one:
In order to solve for a long time in the longitudinal beam manufacturing process, the problem such as processing technology labour intensity is large, production cost is high, the described longitudinal beam drop of present embodiment forming method adopts the method for shaped by fluid pressure to form the drop of described vehicle frame.
The longitudinal beam of producing of shaped by fluid pressure can satisfy various vehicles fully to the requirement of frame strength, and meanwhile processing technology labour intensity is little, and cost is low.
As shown in Figure 1, described longitudinal beam drop forming method specifically may further comprise the steps again:
First: purchase or self manufacture are produced the straight beam of required longitudinal beam;
Second: wheel figure place demand and the drop parameters such as wheel bit depth, width and bending angle according to described production vehicle frame are selected suitable mould;
The 3rd: the straight beam in first is assembled in the mould and in the mould filling liquid hydraulic fluid, exert pressure to mould or hydraulic fluid again and produce the required drop of described longitudinal beam.Wherein said hydraulic fluid can be that hydraulic pressure water also can be other hydraulic oil.
The mould of using in step the second can be nonadjustable mould, size shape for different vehicle frame moulds differs, can directly use in process of production, use the later stage wearing and tearing to wait to cause the frequency of die change relatively high but exist mould, mould is usually can only corresponding a kind of vehicle frame cannot multiplexing utilization rate also lower.
As further improvement of the present invention, the present invention preferentially adopts adjustable mold, so also need to assemble and debug mould to produce required longitudinal beam according to position of wheel demand and drop parameter between step the second and step the three.
The described longitudinal beam drop of present embodiment forming method can be applied to make various vehicle frames, especially is fit to make the bus frame that the vehicle frame wide cut is large, the drop parameter is changeable.
Embodiment two:
On the basis of embodiment one, present embodiment is in first step, and the straight beam of employing is the U groove straight beam that the side is the U font, and is as shown in Figure 2 concrete.Wherein, shown in Figure 3 be the longitudinal beam after the moulding, wherein bending part is the drop of longitudinal beam.
In shaped by fluid pressure, the interaction area between hydraulic fluid or punch and the straight beam is larger with respect to common straight beam for employing U groove straight beam, and deformation is more stable and rapider.
Embodiment three:
On the basis of embodiment one, present embodiment is in second step, and the mould of described employing is mould as shown in Figure 4; Described mould comprises mold 1 and bed die 2; Described mold 1 is provided with the punch 4 that satisfies position of wheel demand and drop parameter; In described bed die 2, be provided with and the suitable liquid-filled chamber 5 of described punch 4 and the topping up pipe 6 that is connected with described liquid-filled chamber 5 with described punch 4 opposite positions.
Wherein, when needs in the mould during filling liquid hydraulic fluid, described topping up pipe 6 is used for the input of described hydraulic fluid; Described liquid-filled chamber 5 is used for carrying out the storage of hydraulic fluid; Move downward when described punch 4 is subject to external force, shown in label be the mild generation deformation under the common effect of hydraulic fluid and punch 4 of 3 straight beam, finally form the required drop of described longitudinal beam.The active force that is subject to punch 4 when straight beam moves downward, and described hydraulic fluid is subject to the crimping section of described straight beam by described topping up pipe 6 outflows.
Embodiment four:
On the basis of embodiment one, the mould in the present embodiment described in the second step is shown in 5, and described mould is divided into mold 7 and bed die 8, and described bed die 8 is provided with the die 10 that satisfies position of wheel demand and drop parameter; Described mold 7 is being provided with topping up pipe 11 with described die opposite position.
Wherein label 9 represents the straight beam described in the first step; Hydraulic fluid enters mold by topping up pipe 11, and described straight beam bends distortion in die under the pressure-acting of hydraulic fluid, finally form the required drop of longitudinal beam.
In the present embodiment longitudinal beam drop forming method, used mould is different from the mould of implementing in three, and the described mould of present embodiment is in generating the process of producing, and exerting pressure in the filling liquid hydraulic fluid finally forms the total beam drop of vehicle frame.Two kinds of moulds all can be applied to longitudinal beam drop forming method of the present invention, all have characteristics simple in structure, easy and simple to handle.
More than; be preferred embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (7)
1. a longitudinal beam drop forming method is characterized in that, described longitudinal beam drop forming method forms the drop of longitudinal beam for the method that adopts shaped by fluid pressure.
2. longitudinal beam drop forming method according to claim 1 is characterized in that, the method for described longitudinal beam drop moulding specifically may further comprise the steps:
Step 1: select or make the required straight beam of longitudinal beam;
Step 2: position of wheel demand and drop parameter according to vehicle frame are selected mould;
Step 3: be installed in described straight beam in the described mould and in mould the filling liquid hydraulic fluid, exerting pressure forms the drop of longitudinal beam.
3. longitudinal beam drop forming method according to claim 2 is characterized in that, described mould is adjustable mold, and also comprises the step according to the assembling of drop parameter and debugging mould between described step 2 and described step 3.
4. according to claim 2 or 3 described longitudinal beam drop forming methods, it is characterized in that described mould is divided into mold and bed die; Described mold is provided with the punch that satisfies position of wheel demand and drop parameter; In described bed die and described punch opposite position, be provided with and the suitable liquid-filled chamber of described punch and the topping up pipe that is connected with described liquid-filled chamber.
5. according to claim 2 or 3 described longitudinal beam drop forming methods, it is characterized in that described mould is divided into mold and bed die, described bed die is provided with the die that satisfies position of wheel demand and drop parameter; Described mold is being provided with the topping up pipe with described die opposite position.
6. according to claim 2 or 3 described longitudinal beam drop forming methods, it is characterized in that described straight beam is the U groove straight beam that the side face becomes the U font.
7. according to claim 1,2 or 3 described longitudinal beam drop forming methods, it is characterized in that described longitudinal beam is the bus frame longeron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210329646.5A CN102847773B (en) | 2012-09-07 | 2012-09-07 | Frame longitudinal head forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210329646.5A CN102847773B (en) | 2012-09-07 | 2012-09-07 | Frame longitudinal head forming method |
Publications (2)
| Publication Number | Publication Date |
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| CN102847773A true CN102847773A (en) | 2013-01-02 |
| CN102847773B CN102847773B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210329646.5A Expired - Fee Related CN102847773B (en) | 2012-09-07 | 2012-09-07 | Frame longitudinal head forming method |
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| DE102009042183A1 (en) * | 2009-09-18 | 2011-03-24 | Daimler Ag | Method for manufacturing of support element of vehicle body of passenger car, processing hollow profile in processing section by bending in associated processing section by high internal pressure forming |
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| CN102189175A (en) * | 2010-03-09 | 2011-09-21 | 财团法人金属工业研究发展中心 | Die for manufacturing metal shell and manufacturing method of metal shell |
| CN102355962A (en) * | 2009-03-19 | 2012-02-15 | 麦格纳国际公司 | Method of producing tailored tubes |
| US20120047978A1 (en) * | 2010-06-15 | 2012-03-01 | Walter Neumann | Method of manufacturing a valve housing |
| CN102632125A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing |
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2012
- 2012-09-07 CN CN201210329646.5A patent/CN102847773B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN1915553A (en) * | 2006-09-05 | 2007-02-21 | 祝志强 | Method for molding metalwork directly by using fluid pressure |
| CN101574771A (en) * | 2008-05-05 | 2009-11-11 | 福特全球技术公司 | Pulsed electro-hydraulic calibration of stamped panels |
| CN102355962A (en) * | 2009-03-19 | 2012-02-15 | 麦格纳国际公司 | Method of producing tailored tubes |
| DE102009042183A1 (en) * | 2009-09-18 | 2011-03-24 | Daimler Ag | Method for manufacturing of support element of vehicle body of passenger car, processing hollow profile in processing section by bending in associated processing section by high internal pressure forming |
| CN102189175A (en) * | 2010-03-09 | 2011-09-21 | 财团法人金属工业研究发展中心 | Die for manufacturing metal shell and manufacturing method of metal shell |
| US20120047978A1 (en) * | 2010-06-15 | 2012-03-01 | Walter Neumann | Method of manufacturing a valve housing |
| CN201889420U (en) * | 2010-10-18 | 2011-07-06 | 宝山钢铁股份有限公司 | Hydraulic forming die capable of precisely adjusting cavity positions |
| CN102166705A (en) * | 2011-03-23 | 2011-08-31 | 胡旭 | Method for forming multi-layer frame longitudinal beam and multi-layer frame longitudinal beam |
| CN102632125A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing |
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| 严向阳等: "组合模在车架纵梁生产中的应用", 《模具工业》 * |
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| CN102847773B (en) | 2014-10-15 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130102 Assignee: Shiyan Huizhi Hongye frame Co. Ltd. Assignor: Hu Xu Contract record no.: 2013990000280 Denomination of invention: Frame longitudinal head forming method License type: Exclusive License Record date: 20130529 |
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