CN1672863A - Fast precise semi-axle casing extruding formation process - Google Patents
Fast precise semi-axle casing extruding formation process Download PDFInfo
- Publication number
- CN1672863A CN1672863A CNA2004100297743A CN200410029774A CN1672863A CN 1672863 A CN1672863 A CN 1672863A CN A2004100297743 A CNA2004100297743 A CN A2004100297743A CN 200410029774 A CN200410029774 A CN 200410029774A CN 1672863 A CN1672863 A CN 1672863A
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- China
- Prior art keywords
- extrusion
- forging
- punching
- endoporus
- perforation
- Prior art date
Links
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- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 238000005755 formation reaction Methods 0.000 title abstract 2
- 238000005242 forging Methods 0.000 claims abstract description 25
- 238000004080 punching Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 24
- 238000005516 engineering processes Methods 0.000 claims description 7
- 230000000149 penetrating Effects 0.000 claims description 4
- 239000002131 composite materials Substances 0.000 claims 1
- 238000005098 hot rolling Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 210000003128 Head Anatomy 0.000 description 17
- 150000001875 compounds Chemical class 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002585 bases Substances 0.000 description 3
- 239000002184 metals Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
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- 239000000446 fuels Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
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- 239000011257 shell materials Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/26—Making machine elements housings or supporting parts, e.g. axle housings, engine mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
Abstract
The technological process of fast forming precise semi-axle casing with circular rod material heated to forging temperature includes four steps of upsetting, punching hole, perforating and positive extruding. The present invention realizes the fast formation of precise semi-axle casing in only four steps. Combined male die structure is adopted to simplify the technological process of extruding hollow rod, and the present invention has high production efficiency and raised material utilization.
Description
Technical field
The invention belongs to metal forming field in the Materials Processing Engineering.Axle tube (spindle nose) and similar therewith quill shaft forging thereof are used to be shaped.
Background technology
Axle tube is a strength member of bearing heavy load on the load-carrying vehicle back axle.Be to save fuel consume, require automobile to improve the loading ratio, so the lighter weldering axle housing that dashes of weight substitutes casting bridge shell just gradually, forge axle tube thereby also substitute the casting axle tube just gradually, so that axle tube and axle housing are firmly welded together.Here it is forges the reason that the axle tube demand rises year by year significantly in recent years.The penetrating forging forming of the hollow that this slenderness ratio is bigger all compares difficulty with the raising precision.The Forging Technology that adopts mainly contains two kinds at present: a kind of is to adopt seamless steel pipe upsetting squeeze on horizontal forging and upsetting machine, and another kind is to set up the punching the wad operation separately or set up Qie Duan Head operation to remove gross weight separately after adopting the round bar upsetting squeeze.All there is some deficiency in these two kinds of technologies.Can't the be shaped forging of the big flange of end band of seamless steel pipe upsetting squeeze method, material price is higher in addition, and production cost is higher, and range of application is just in atrophy.Mainly there are two problems in another kind of technology: first shaping endoporus adopts the backward extrusion method, extruding Chong Head length is grown (being not less than the forging height), slenderness ratio is bigger, yielding in the work, service life is low, need often to change Chong Head in the production, this has become the principal element that restriction productivity ratio improves; It two is that the merchant need set up independent operation to remove the gross weight that backward extrusion stays behind extrusion process, also need set up Qie Duan Head operation sometimes, and not only operation is long, and stock utilization is also lower.
Summary of the invention
The present invention proposes the quick precision form new technology of axle tube, and technical process is to be heated to round bar process jumping-up, punching, perforation and forward extrusion, upsetting squeeze four operations on hydraulic press of forging temperature, to finish whole shaping tasks.Forging precision meets or exceeds the micron order in the standard GB 12362 " steel forging part tolerance and machine-finish allowance ", only just finishes the production of this penetrating middle airplane crash shaping forging with four operations, has realized the quick shaping of axle tube net-size forging.
One of feature of the present invention is to adopt forward extrusion method shaping axle tube hollow stem portion, forward extruding male mould is formed by annular Chong Head with by the core bar that annular Chong Head surrounds, annular Chong Head applies extruding force, core bar and die inwall control metal flow, the dimensional accuracy of assurance bar portion's endoporus and outer wall.Portion compares with the backward extrusion bar, the present invention has improved the stress of extruding punch greatly, big slenderness ratio backward extrusion Chong Head is changed into height dimension improve more than 10 times less than the annular Chong Head Chong Head service life of diameter dimension, the core bar length that size is close with backward extrusion Chong Head diameter also shortens to about half of backward extrusion Chong Head, and no longer applies extruding force, thereby wearing and tearing alleviate greatly, life-span improves greatly, guarantees the endoporus forming accuracy, has improved productivity ratio.Another feature of the present invention is that punching the wad operation and forward extrusion operation are merged into a perforation and forward extrusion compound working procedure, shortened technological process, exempt punching the wad operation or the Qie Duan Head operation set up separately, raise labour productivity, improve stock utilization, simultaneously also can reduce production equipment, reduce investment outlay.
Description of drawings
Accompanying drawing 1 is a kind of axle tube forging drawing.
Accompanying drawing 2 is a kind of axle tube forming process flow chart of the present invention.
Wherein 1)-and jumping-up, 2)-punching, 3)-perforation and forward extrusion, 4)-upsetting squeeze
Accompanying drawing 3 is perforation and forward extrusion compound working procedure mould and mould bases figure.
The specific embodiment
Illustrate the invention process process below, also further specify technical characterictic of the present invention.
Fig. 1 is a kind of axle tube forging drawing.Accuracy class is the micron order among the GB12362 " steel forging part tolerance and machine-finish allowance ".Forging height 380mm, head have Fa Lan Disk.Adopt extrusion molding, the impulse stroke of forcing press should reach 2 times of workpiece height at least.This is because except the stroke that extruding needs, also will consider to take needed stroke away after workpiece ejects from die.Add the mold system height, opening of forcing press highly should be greater than 4 times of workpiece height.The common mechanical forcing press can not satisfy this requirement, and hydraulic press is easier to reach this requirement, therefore selects for use hydraulic press more reasonable.Four operations of shaping forging can be arranged on three hydraulic presses, and mould is installed in respectively on the three good cover mould bases of guiding accuracy.The shared equipment of jumping-up and punching wherein, perforation and forward extrusion compound working procedure and upsetting squeeze operation each with an equipment.The round bar jumping-up provides size suitable blank for the punching operation, removes the oxide skin that heating produces simultaneously.Adopt the enclosed punching, guarantee blank accurate positioning in next procedure, provide good condition for bar portion is shaped.When perforation and the work of forward extrusion compound working procedure, core bar in the combined heave die is removed punching recess earlier, gross weight drops on die bottom and is compressed air and blows away, and annular then Chong Head contact blank also applies extruding force, by forward extrusion be shaped whole penetrating bar portion's endoporus and outline.Pass through upsetting extrusion head Fa Lan Disk at last.Fig. 2 is a process flow, and Fig. 3 is perforation and forward extrusion compound working procedure mould and mould bases figure.Technical characterictic of the present invention embodies a concentrated reflection of in perforation and the forward extrusion compound working procedure.Fig. 3 has clearly show the operation principle of this operation, and annular Chong Head applies extruding force, and core bar is undertaken punching the wad and control metal flow dual role.Compare with backward extrusion Chong Head, the length much shorter of core bar is not born extruding force, mainly bear the tension that is produced owing to friction at work, so loss of significance is slower, and service life is longer.
Adopting 1250 t hydraulic press is main frame, is equipped with two less hydraulic presses of tonnage and forms production line, can produce 300 millimeters of flange Disk diameters, 110 millimeters of bar portion external diameters, 60 millimeters of bar portion endoporus, the axle tube of 400 millimeters of forging height and following size thereof.Productive temp 30 seconds, class produces can reach 800,20 kilograms of forging average weights, class produces 16 tons of forging.The forging stock utilization is more than 97%, the forging precision micron order that is up to state standards.The present invention is the advanced practical technique of forging axle tube, and application prospect is very wide.
Claims (2)
1. the quick precision of axle tube forging is pushed new technology, it is characterized in that adopting the hot rolling round bar to be heated to forging temperature and on hydraulic press, need not to set up separately punching the wad operation Huo Qie Head operation, accurate quick penetrating endoporus and the outline of being shaped, technical process is: jumping-up-punching-perforation and forward extrusion-upsetting squeeze.
2. according to claim 1 described new technology, it is characterized in that a work step is merged in perforation and forward extrusion, utilize the core bar of suitable length at first to remove punching recess, then with the forward extrusion endoporus that is shaped.For realizing this purpose, the composite design punch structure is made up of ring-type punch and core bar, and the ring-type punch applies extruding force, and core bar is used to the endoporus that is shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100297743A CN100431775C (en) | 2004-03-26 | 2004-03-26 | Fast precise semi-axle casing extruding formation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100297743A CN100431775C (en) | 2004-03-26 | 2004-03-26 | Fast precise semi-axle casing extruding formation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1672863A true CN1672863A (en) | 2005-09-28 |
| CN100431775C CN100431775C (en) | 2008-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100297743A CN100431775C (en) | 2004-03-26 | 2004-03-26 | Fast precise semi-axle casing extruding formation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100431775C (en) |
Cited By (25)
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| CN100402228C (en) * | 2006-06-15 | 2008-07-16 | 中材科技股份有限公司 | Technique for processing tapered platinum alloy discharge spout |
| CN100441369C (en) * | 2006-03-16 | 2008-12-10 | 钱宗富 | Directional axial conical standpipe process of motorcycle by disposable cold extruding formative machining |
| CN101310915B (en) * | 2007-05-23 | 2010-06-16 | 张华文 | Processing method of pin bush of project excavator track |
| CN101829697A (en) * | 2010-05-06 | 2010-09-15 | 胡杰 | One-die double-top extrusion forming technology for automotive axle housing tube or engineering mechanical supporting axle |
| CN101829698A (en) * | 2010-03-30 | 2010-09-15 | 河南科技大学 | Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould |
| CN101954436A (en) * | 2010-09-26 | 2011-01-26 | 青特集团有限公司 | Half-shaft pre-upsetting cooling system |
| CN102398146A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Pick shoe forging process |
| CN102489657A (en) * | 2011-12-23 | 2012-06-13 | 济南中森机械制造有限公司 | Hot extrusion forging device and forging method of flange plate shaft tube |
| CN102615229A (en) * | 2011-01-30 | 2012-08-01 | 江苏海达管件集团有限公司 | Intelligent precision forging die for pipe fittings |
| CN102825086A (en) * | 2012-09-13 | 2012-12-19 | 无锡恒力标准件制造有限公司 | Washing machine spin shaft forming process and forming dies thereof |
| CN102922223A (en) * | 2011-08-10 | 2013-02-13 | 上海东芙冷锻制造有限公司 | Cold forging process for steering flange sleeve of automobile |
| CN102921853A (en) * | 2011-08-10 | 2013-02-13 | 上海东芙冷锻制造有限公司 | Process for performing precision forging on lower shaft sleeve of energy conversion system of new power-driven automobile |
| CN103071748A (en) * | 2013-01-18 | 2013-05-01 | 洛阳秦汉冷锻有限公司 | Large-size moving contact precision forging technology and mold |
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| CN103785699A (en) * | 2012-10-30 | 2014-05-14 | 加特可株式会社 | Method for forming hollowing portion of shaft portion |
| CN104384427A (en) * | 2014-08-13 | 2015-03-04 | 北京机电研究所 | Method for forming precision forge piece of wind power generation spindle |
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| CN1080581A (en) * | 1993-05-09 | 1994-01-12 | 国营东风机械厂 | Automobile hub axle tube making technology |
| CN1075748C (en) * | 1997-10-07 | 2001-12-05 | 邓晓光 | Semi-shaft jacket heat extruding shaping tech. |
| JP2920132B1 (en) * | 1998-01-12 | 1999-07-19 | 日本高周波鋼業株式会社 | Method for manufacturing stepped annular member and inner and outer ring members |
| JP2000173144A (en) * | 1998-12-01 | 2000-06-23 | Hitachi Ltd | Hub manufacture for disk device |
| CN1438081A (en) * | 2003-03-31 | 2003-08-27 | 中国重型汽车集团有限公司 | Technology for processing spindle nose forged piece of heavy automobile |
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| CN100441369C (en) * | 2006-03-16 | 2008-12-10 | 钱宗富 | Directional axial conical standpipe process of motorcycle by disposable cold extruding formative machining |
| CN100402228C (en) * | 2006-06-15 | 2008-07-16 | 中材科技股份有限公司 | Technique for processing tapered platinum alloy discharge spout |
| CN101310915B (en) * | 2007-05-23 | 2010-06-16 | 张华文 | Processing method of pin bush of project excavator track |
| CN101829698A (en) * | 2010-03-30 | 2010-09-15 | 河南科技大学 | Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould |
| CN101829697A (en) * | 2010-05-06 | 2010-09-15 | 胡杰 | One-die double-top extrusion forming technology for automotive axle housing tube or engineering mechanical supporting axle |
| CN102398146A (en) * | 2010-09-10 | 2012-04-04 | 江苏威鹰机械有限公司 | Pick shoe forging process |
| CN102398146B (en) * | 2010-09-10 | 2014-02-19 | 江苏威鹰机械有限公司 | Pick shoe forging process |
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| CN102922223A (en) * | 2011-08-10 | 2013-02-13 | 上海东芙冷锻制造有限公司 | Cold forging process for steering flange sleeve of automobile |
| CN102921853A (en) * | 2011-08-10 | 2013-02-13 | 上海东芙冷锻制造有限公司 | Process for performing precision forging on lower shaft sleeve of energy conversion system of new power-driven automobile |
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| CN104384427A (en) * | 2014-08-13 | 2015-03-04 | 北京机电研究所 | Method for forming precision forge piece of wind power generation spindle |
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| CN106734821A (en) * | 2017-03-20 | 2017-05-31 | 江苏海宇机械有限公司 | A kind of size axis tube cavity fine forging forming die long and forming method |
| CN106825093A (en) * | 2017-03-28 | 2017-06-13 | 河南英威东风机械制造有限公司 | Load-carrying axle head sleeve pipe hot extrusion precise forming technique and set of molds |
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| CN100431775C (en) | 2008-11-12 |
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