CN1864881A - Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof - Google Patents
Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof Download PDFInfo
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- CN1864881A CN1864881A CN 200610012828 CN200610012828A CN1864881A CN 1864881 A CN1864881 A CN 1864881A CN 200610012828 CN200610012828 CN 200610012828 CN 200610012828 A CN200610012828 A CN 200610012828A CN 1864881 A CN1864881 A CN 1864881A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims 2
- 238000004321 preservation Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000000265 homogenisation Methods 0.000 claims 1
- 239000013589 supplement Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 6
- 229910000861 Mg alloy Inorganic materials 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
本发明涉及非对称组合零件整体挤压成形方法及装置，使用凸、凹组合模具装置，坯料加热－整体挤压成形；其特点是：根据零件上凸台的位置及尺寸，设计不等厚度的坯料；坯料放在凹模内有一个偏置量S，坯料厚度大的一边放置，或偏置的方向在非对称组合零件需要金属量大的一边(带凸台的一边)；通过坯料的不等厚度或坯料放在凹模内偏置量S，控制金属流量与流动方向，使金属充填满模腔而成形零件。模具装置为组合式结构，工作稳定，减少了模具工装和设备；工艺简化，零件可一次性整体挤压成型，降低了生产成本；制成产品尺寸精度和表面精度高、材料利用率高。
The invention relates to a method and device for integral extrusion forming of asymmetric combined parts. A convex and concave combined mold device is used, and the billet is heated-integrated extrusion forming; Blank; the blank is placed in the die with an offset S, and the side with the larger thickness of the blank is placed, or the direction of the offset is on the side where the asymmetric combination part requires a large amount of metal (the side with the boss); through the different parts of the blank Equal thickness or the blank is placed in the die with an offset S to control the metal flow and flow direction, so that the metal fills the cavity and forms the part. The mold device is a combined structure, which works stably, reducing mold tooling and equipment; the process is simplified, and the parts can be extruded as a whole at one time, which reduces the production cost; the finished product has high dimensional accuracy and surface accuracy, and high material utilization rate.
Description
One, technical field
The invention belongs to the metallic extrusion molding technology, particularly Global squeeze mould-forming method and device of the unsymmetrical component part.
Two, background technology
Asymmetric flanged dish type class part is widely used in fields (as shown in Figure 1) such as automobile, petroleum industry, and at present, this type of part mainly adopts casting or the manufacturing of forging machine cut processing mode.Replacing traditional processing mode to produce such part with extrusion process, can save material, improve the quality of products and productivity ratio, is a kind of rising technology.Especially higher to some performance requirements parts adopt extrusion forming process, can reach the purpose that improves the product comprehensive mechanical property.The extrusion process of flanged disk-shaped part some symmetries or rule is applied aborning, and has obtained better economic benefits.Yet for asymmetric or irregular flanged disk-like accessory, its extrusion molding is different from general part, metal flow situation complexity; If adopt the distortion of multi-pass operation, higher production cost is difficult to through engineering approaches and uses.Yet there are no at present the research report of related fields both at home and abroad, more can't be applied to actual production.
Three, summary of the invention
The present invention seeks to adopt existing extrusion forming process technology, use Non-Uniform Flow control extrusion forming process technology, Global squeeze mould-forming method and device of the unsymmetrical component part is provided.So that replace casting or such part of forging machine cut processing, but the extrusion modling of part disposable integral save material, improve the quality of products, qualification rate and production efficiency, reduce production costs.
The present invention adopts extrusion forming process, on the basis of analyzing such complex parts extrusion metal flow feature, according to asymmetric combination part shape structure and size and metal flow direction-controlling method, makes the smooth shaping of part; And the die device of employing the inventive method of design.
Asymmetric combination part by one-step integral extrusion forming method of the present invention uses protruding, recessed assembling die device, blank heating-integral extrusion forming; Be characterized in:
● according to the position and the size of structure on the part (boss), design the not blank of equal thickness;
● blank is received in an amount of bias S in the die, place on one side that sotck thinkness is big, or the direction of biasing needs big one side of amount of metal (one side of band boss) at the asymmetric combination part;
● not equal thickness or blank by blank are placed on amount of bias S in the die, and control metal flow and flow direction make metal filled full die cavity and the shaping part.
The device of asymmetric combination part integral extrusion forming of the present invention comprises upper bolster, die shoe, punch, reaches die and push rod; It is characterized in that: described die is split type combined die.
Above-mentioned split type combined die has part bottom die, the part sidepiece die right side, a part sidepiece die left side; Part bottom die is with soket head cap screw and straight pin, by sleeve and the die backing plate on it be fixed on die shoe above; Die is right packs in the die of part bottom with a die left side, and is located by positioning key; Be provided with little jogger hole on the die of die backing plate and part bottom, little push rod is packed in the little jogger hole, between little push rod and the die shoe little push rod connecting plate is housed in the sleeve; Big push rod is housed in the die shoe jogger hole; Described punch with soket head cap screw and straight pin by punch retainer be fixed on upper bolster below.
Above-mentioned part sidepiece die is right to be provided with the die of side direction boss with a die left side, and the sidewise hole pin is housed.Adopt the not method of uniform thickness blank and blank biasing, can form part with holes on the sidewall boss behind side direction boss die and the sidewise hole pin extrusion metal.
For common axisymmetric parts extrusion molding, adopt the smooth and parallel round blank of upper and lower end face usually.And to asymmetric combination class complex parts, because the existence of sidewall boss, metal flow in the extrusion process such as makes the upper/lower cone of boss corresponding position be prone to be not fully filled at defective.According to the position and the size of part convex platform, design the not blank of equal thickness, the smooth but uneven round blank of promptly upper and lower end face, as shown in Figure 4, the end that sotck thinkness is big places part band boss one side during extruding.
If part sidewall boss is bigger, only rely on not uniform thickness blank, be difficult to overcome defectives such as being not fully filled appears in upper/lower cone, and if the sotck thinkness difference excessive, will make punch stressed serious inhomogeneous or asymmetric, to impacting die life.Will setover by blank and adjust metal flow.For common extruding, evenly flow and the extrusion wall thickness for guaranteeing metal, blank needs centering.To the extruding of asymmetric combination class complex parts, during shaping blank is setovered, as shown in Figure 5.
The disposable Global squeeze mould-forming method and device of the unsymmetrical component part of the present invention has substantive technical characterstic with remarkable technique effect to be compared with the prior art:
(1) can realize such part by one-step monolithic molding, simplify technical process, reduce mold tooling and equipment, reduce production cost;
(2) mold tooling is simple in structure, working stability;
(3) product size precision and surface accuracy height, stock utilization height;
The present invention has proposed new thinking for asymmetric flanged dish type class part extrusion molding, adopts Non-Uniform Flow control extrusion molding, has solved an asymmetric or irregular flanged dish type class part extrusion molding difficult problem, has opened up new approach.
Four, description of drawings
Fig. 1 is the asymmetric combination design of part front view of typical disposable integral extrusion molding;
Fig. 2 is the asymmetric combination design of part side view of typical disposable integral extrusion molding;
Fig. 3 is the asymmetric combination design of part vertical view of typical disposable integral extrusion molding;
Fig. 4 is an equal thickness blank shape schematic diagram not;
Fig. 5 is the position view of blank in mould;
Fig. 6 is part integral extrusion forming schematic diagram in mould;
Fig. 7 is the apparatus structure schematic diagram of asymmetric component parts disposable integral extrusion molding.
Five, the specific embodiment
Below in conjunction with accompanying drawing with regard to the specific embodiment be elaborated (present embodiment is to further specify of the present invention, rather than any qualification that the present invention is made).
1, certain bogie braking steam chest support
Fig. 1, Fig. 2 and shown in Figure 3, certain bogie braking steam chest support is a flange dish type class asymmetric combination typical part; Its shape, structure are comparatively complicated, all have flange up and down, and irregular, and sidewall has asymmetrically distributed boss.The reliability requirement height.Adopt magnesium alloy rod machining difficulty, stock utilization is low, the cost height; Casting method is produced percent defective height, poor reliability; And obdurability is difficult to satisfy its requirement.
2, material and extrusion billet are determined
Magnesium alloy AZ31 material is adopted in experiment, and Φ 170 ingot castings are after homogenising is handled (420 ± 5 ℃, 12h, air cooling), and the turning crust is to Φ 155, sawing and become not equal thickness blank after the band sawing machine blanking through machining, and the high H of blank is 35mm, α is taken as 1.5 °.As shown in Figure 4.
3, die sidewise hole pin is provided with
Certain bogie steam chest bracket side has the hole of Φ 15 on boss, die sidewise hole pin Φ 12 is set.
4, extrusion billet biasing
As shown in Figure 5, during extruding, extrusion billet offset or dish S is taken as 2mm.
5, pressurizing unit structure
The device of the monolithic extruded one-tenth of asymmetric combination part, as shown in Figure 6.Mainly comprise upper bolster, die shoe, punch, reach die and push rod; Die is split type combined die.
Shown in Figure 7, certain bogie steam chest trestle component 20 pressurizing unit, split type combined die has part 18 bottom dies 6, the part sidepiece die right side 7, a part sidepiece die left side 17; Part bottom die 6 usefulness soket head cap screws 14 and straight pin 10, by sleeve 8 and the die backing plate 9 on it be fixed on die shoe 15 above; Die right 7 is packed into a die left side 17 in the die 6 of part bottom, and by positioning key 16 location; Be provided with little jogger hole on the die 6 of die backing plate 9 and part bottom, little push rod 11 is packed in the little jogger hole, between little push rods 11 and the die shoe little push rod connecting plate 13 is housed in the sleeve 8; Big push rod 12 is housed in die shoe 15 jogger holes; Described punch 4 usefulness soket head cap screws 2 and straight pin 5 by punch retainer 3 be fixed on upper bolster 1 below.
As shown in Figure 6.Be provided with the die 18 of side direction boss at a part sidepiece die right 7 or a die left side 17, and sidewise hole pin 19 is housed.Adopt the not method of uniform thickness blank and blank biasing, can form part with holes on the sidewall boss 20 behind side direction boss die and the sidewise hole pin extrusion metal.The heating and heat-insulating device that outside mould, also can have thermocouple observing and controlling temperature.
6, extrusion process
On the 6300KN hydraulic press, adopt certain bogie steam chest support pressurizing unit, use the not uniform thickness blank of making, mould and blank heating to 400 ℃, the heating and heat-insulating device that use has thermocouple observing and controlling temperature carries out concurrent heating, through one direct extrusion molding of extrusion process.Concrete technology:
---homogenising is handled (420 ± 5 ℃, 12h, air cooling)---base---isothermal extruding (400 ± 10 ℃ of forming temperatures)---surface clean---subsequent treatment to ingot casting.
Along with the development of vehicle, Aeronautics and Astronautics device, the part that the aluminium of light high performance, magnesium alloy are made is more and more, and asymmetric combination part by one-step integral extrusion forming method of the present invention and device can be used widely.
Claims (6)
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| CNB2006100128284A CN100425366C (en) | 2006-06-13 | 2006-06-13 | Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof |
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| CNB2006100128284A CN100425366C (en) | 2006-06-13 | 2006-06-13 | Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189145A (en) * | 2011-03-04 | 2011-09-21 | 中北大学 | Multidirectional extrusion molding process and die for aluminum alloy shell parts with branches |
| CN101648424B (en) * | 2009-08-27 | 2012-05-16 | 苏州科逸住宅设备股份有限公司 | Combined die |
| CN102784808A (en) * | 2012-08-07 | 2012-11-21 | 中北大学 | Method and die for precisely forming asymmetric high-web complex-section workpiece |
| CN103495688A (en) * | 2013-09-13 | 2014-01-08 | 国营第六一六厂 | Hot-extrusion die |
| CN103495687A (en) * | 2013-09-13 | 2014-01-08 | 国营第六一六厂 | Hot die forging and hot extrusion composite accurate forming technology of connecting pin |
| CN103521668A (en) * | 2013-07-30 | 2014-01-22 | 中北大学 | Method for extrusion forming of high-strength complex aluminum alloy special-shaped outer hexagon seat metal plate |
| CN103521544A (en) * | 2013-07-30 | 2014-01-22 | 中北大学 | High-strength complex aluminum alloy special-shaped external hexagonal base plate extruding local loading mould |
| CN103878199A (en) * | 2014-01-14 | 2014-06-25 | 中北大学 | Rotary extrusion die of homogenous high-toughness magnesium alloy cup-shaped component |
| CN104525602A (en) * | 2014-12-23 | 2015-04-22 | 开封强力集团锚固技术股份有限公司 | Warm extrusion equipment for metal parts |
| CN107442589A (en) * | 2017-09-13 | 2017-12-08 | 中北大学 | A kind of large-scale band lug magnesium alloy component shaping dies |
| CN107626760A (en) * | 2017-09-13 | 2018-01-26 | 中北大学 | A kind of large-scale band lug magnesium alloy component manufacturing process |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5902242A (en) * | 1998-01-22 | 1999-05-11 | Acuson Corporation | System and method for forming a combined ultrasonic image |
| CN2590687Y (en) * | 2002-09-28 | 2003-12-10 | 张修基 | Mould induction heating furnace for aluminium section bar extrusion production line |
| CN1253269C (en) * | 2003-01-27 | 2006-04-26 | 华北工学院 | Casting extruding compound shaping method of magnesium alloy automobile hub |
| CN2603716Y (en) * | 2003-02-26 | 2004-02-18 | 华中科技大学 | Die forging forming mould of metal extrusion pressing |
| JP2005013997A (en) * | 2003-06-23 | 2005-01-20 | Tostem Corp | Extrusion device for aluminum bar material |
| WO2005028123A1 (en) * | 2003-09-17 | 2005-03-31 | 3M Innovative Properties Company | Methods for forming a coating layer having substantially uniform thickness, and die coaters |
| CN2764512Y (en) * | 2004-12-22 | 2006-03-15 | 郑州机械研究所 | Extrusion mold for inside and outside toothed member |
-
2006
- 2006-06-13 CN CNB2006100128284A patent/CN100425366C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101648424B (en) * | 2009-08-27 | 2012-05-16 | 苏州科逸住宅设备股份有限公司 | Combined die |
| CN102189145B (en) * | 2011-03-04 | 2013-07-31 | 中北大学 | Multidirectional extrusion molding process and die for aluminum alloy shell parts with branches |
| CN102189145A (en) * | 2011-03-04 | 2011-09-21 | 中北大学 | Multidirectional extrusion molding process and die for aluminum alloy shell parts with branches |
| CN102784808A (en) * | 2012-08-07 | 2012-11-21 | 中北大学 | Method and die for precisely forming asymmetric high-web complex-section workpiece |
| CN102784808B (en) * | 2012-08-07 | 2015-09-16 | 中北大学 | A kind of asymmetric high muscle complex section workpiece Accurate Shaping mould |
| CN103521544A (en) * | 2013-07-30 | 2014-01-22 | 中北大学 | High-strength complex aluminum alloy special-shaped external hexagonal base plate extruding local loading mould |
| CN103521668A (en) * | 2013-07-30 | 2014-01-22 | 中北大学 | Method for extrusion forming of high-strength complex aluminum alloy special-shaped outer hexagon seat metal plate |
| CN103495688B (en) * | 2013-09-13 | 2015-10-07 | 国营第六一六厂 | A kind of hot extruding die |
| CN103495687A (en) * | 2013-09-13 | 2014-01-08 | 国营第六一六厂 | Hot die forging and hot extrusion composite accurate forming technology of connecting pin |
| CN103495687B (en) * | 2013-09-13 | 2015-10-07 | 国营第六一六厂 | A kind of connecting pin hot forging and hot extrusion composite accurate forming technology |
| CN103495688A (en) * | 2013-09-13 | 2014-01-08 | 国营第六一六厂 | Hot-extrusion die |
| CN103878199A (en) * | 2014-01-14 | 2014-06-25 | 中北大学 | Rotary extrusion die of homogenous high-toughness magnesium alloy cup-shaped component |
| CN103878199B (en) * | 2014-01-14 | 2015-12-02 | 中北大学 | A kind of rotary squeezing mould of homogeneous high Strengthening and Toughening magnesium alloy cup-shape member |
| CN104525602A (en) * | 2014-12-23 | 2015-04-22 | 开封强力集团锚固技术股份有限公司 | Warm extrusion equipment for metal parts |
| CN107442589A (en) * | 2017-09-13 | 2017-12-08 | 中北大学 | A kind of large-scale band lug magnesium alloy component shaping dies |
| CN107626760A (en) * | 2017-09-13 | 2018-01-26 | 中北大学 | A kind of large-scale band lug magnesium alloy component manufacturing process |
| CN107626760B (en) * | 2017-09-13 | 2019-05-03 | 中北大学 | A method for forming large magnesium alloy components with lugs |
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| CN100425366C (en) | 2008-10-15 |
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Assignee: Jiangsu Jinyuan Forging Co., Ltd. Assignor: Zhongbei Univ Contract fulfillment period: 2008.9.15 to 2013.9.15 contract change Contract record no.: 2009320000789 Denomination of invention: Integral extrusion forming method for asymmetrical assembly parts and apparatus thereof Granted publication date: 20081015 License type: Exclusive license Record date: 2009.5.6 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.15 TO 2013.9.15; CHANGE OF CONTRACT Name of requester: JIANGSU JINYUAN FORGING CO., LTD. Effective date: 20090506 |
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