CN1398690A - Precise forging technology for automobile steering knuckle - Google Patents
Precise forging technology for automobile steering knuckle Download PDFInfo
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- CN1398690A CN1398690A CN 02128732 CN02128732A CN1398690A CN 1398690 A CN1398690 A CN 1398690A CN 02128732 CN02128732 CN 02128732 CN 02128732 A CN02128732 A CN 02128732A CN 1398690 A CN1398690 A CN 1398690A
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Abstract
The present invention relates to the field of precise metal forming technology, especially the precise forging process of automobile steering knuckle. The present invention features that the three main procedures of extruding blank, finish forging formation, and punching hole and cutting fin are completed after one heating. The present invention has the advantages of high product quality, saving in time, saving in energy consumption and long die life.
Description
The present invention relates to a kind of metal Precision Forming Technology field, particularly a kind of precision forging method of automobile steering knuckle.
Knuckle is the vital part on the car, because the importance of its geometric complexity and serviceability, thereby has increased the difficulty of its forging and molding.This forging shape, the very complicated (see figure 1) of structure: the forging core is two cone bosses with holes, butt joint; Closely join for the thin flange of rectangle and cone boss; One boss and two side legs complex-shaped, that length is long are arranged below thin flange; The forging drop is also bigger, reaches more than the 90mm, is typical complicated Y-piece.In addition this forging ' s block dimension precision, surface quality (except macropore, aperture need the machining, all the other are casting skin) and metallic fiber flow to strictly, and the reasonable forging method of therefore developing this forging quite is subjected to attention both domestic and external.
At present, the Forging Technology process of this forging routine is base, blocking and finish-forging.As external poly-material → open type upsetting squeeze blocking → the go Forging Technology scheme of gross weight → bending → finish-forging → side cut that on the 40MN hotdie forging press, adopts.The shortcoming of this scheme is: need expensive large-tonnage hotdie forging press, operation is many, energy consumption is big, stock utilization is low and forging cost height.Nearest domestic Dong's society is introduced in " the semiclosed extrusion process of automobile steering knuckle forging " literary composition (2000 the 6th phases of forging technology), they have determined semiclosed extrusion forging process program on the 40MN hotdie forging press, and its technological process is: blanking → Frequency Induction Heating → jumping-up (removing oxide skin) → extruding → finish-forging → side cut → correction → check.This scheme adopts semiclosed extrusion process to provide reliable and stable prefabricated blank for finish-forging, guaranteed forging quality, its technical process is than the common process advanced person, but also needs large-tonnage hotdie forging press (the distortion load of prefabricated blank is also bigger), the mould load is bigger, influences die life.
The object of the present invention is to provide a kind of precise forging technology for automobile steering knuckle, this invention reduces work step number of times, improves the prefabricated blank precision, reduces deformation force load (reducing the tonnage of equipment needed thereby), the purpose when reaching high-quality, material-saving, energy-conservation and joint.
This precise forging technology for automobile steering knuckle is characterized in that: this technology is in a fire, and employing can divide die lateral compression precision performing part → finish-forging shaping → punching and cut three master operations of overlap and finish the precision forging process:
1. can divide the mould of die lateral compression precision performing part to form by upper and lower die 2,1 and extruding drift 3, elder generation is with upper and lower die 2,1 matched moulds before the work, and impose pressing mold power and (finish by special mould structure or by the double action press of special use, latter's effect is better), after compressing upper and lower die 2,1 formation near closed hollow ring, will adopt the good cylinder blank of electrical induction to put into die, carry out Closed Extrusion with extruding drift 3, open upper cavity die 2 afterwards, eject forging; In this work step, finish the preform of centre bore and finished the basic shaping of two cone bosses, thin flange, boss and two side legs simultaneously, thereby reached the precision form of prefabricated blank;
Adopt hemispherical extruding drift to carry out pre-punched hole, the working face that promptly pushes drift 3 is a hemispherical, and the excess metal that the extruding drift of this shape is beneficial to central part presses to shank, can reduce deformation force again simultaneously;
In an actor's rendering of an operatic tune of two long side legs, adopt the die cavity of extruding belt, every of the die cavity cross sectional dimensions that is about to outside the long side leg exit increases about 1mm, flow out outlet when outer to reach metal, to flow along the shank die cavity is crooked, carry out upsetting formation behind the through end, promptly by extruding → bending mobile → the jumping-up mode is full of shank, can reaches the purpose that reduction deformation force and die cavity are full of, end at the shank die cavity should have passage 5, to reduce the resistance of metal flow;
2. in finish-forging shaping work step, extruding drift 3 adopts the slot type punching, when finish-forging is shaped the pre-punched hole gross weight is clamp-oned in the groove, with the generation of avoiding folding;
3. last punching and excision overlap, all operation finishes.
Drawings and Examples
Fig. 1 is an automobile steering knuckle forging sketch
Fig. 2 is for can divide the recessed lateral compression precision performing part sketch of touching
Fig. 3 is extruding belt swaging die sketch
Fig. 4 is a finish-forging shaping slot type punching sketch
Fig. 2, Fig. 3, Fig. 4 are one embodiment of the present of invention (Fig. 2, Fig. 3, Fig. 4), at first should design heat forging drawing according to product parts figure, and calculate required billet size (diameter and length); Can divide the recessed lateral compression precision performing part figure that touches according to principle of the present invention and method design again; Power energy parameter (extruding force and a mould power etc.) when scheming to calculate distortion according to above two, and select pressing mold power load mode and Type of equipment; According to above two figure with according to principle design prefabricated blank die drawing of the present invention, finish-forging shaping dies figure and punching shaving die figure; Select suitable mold materials and heat treatment at last, and select the suitable lubricant material and the preheating and the type of cooling of mould.
Owing to adopt hemispherical pre-punched hole and the extruding of extruding belt, not only can reduce deformation force, mainly be to have guaranteed being full of of side leg that two complex-shaped length are long, thereby reach the precision form of prefabricated blank, for the realization of whole proposal is laid a good foundation.
This kind mould structure and mode of texturing force metal to flow to the die cavity depths under the three-dimensional compressive stress state, and do not form overlap, and therefore required deformation force is little, metal flow good, be beneficial to shaping, especially is beneficial to the preform of the side leg with complicated shape.Can reach the tonnage and the accurate preformed purpose that reduce equipment needed thereby.
Can divide the recessed side of touching to squeeze precision performing part forging scheme owing to adopt, simplify forging process, reduce deformation force (comparing forging load can reduce about 40% with routine), save material (stock utilization can reach more than 75%).
The present invention not only can reach high-quality, when joint and energy-conservation effect, can also improve more significantly mould Service life. Just can improve the service life of finish-forging shaping dies such as the precision form of prefabricated blank; By Little in prefabricated blank shaping deformation force, also can increase its service life, and work as the prefabricated blank die wear and arrive In the time of to a certain degree, also can forge qualified forging by the finish-forging shaping dies.
Claims (3)
1. automobile steering knuckle precision forging method, it is characterized in that: this technology is in a fire, employing can divide die lateral compression precision performing part → finish-forging shaping → punching and cut three master operations of overlap and finish the precision forging process:
(1) can divide the mould of die lateral compression precision performing part to form by upper and lower die (2), (1) and extruding drift (3), the preceding elder generation of work is with upper and lower die (2), (1) matched moulds and impose pressing mold power, after compressing upper and lower die (2), (1) formation near closed hollow ring, put into die with adopting the cylinder blank of anaerobic or few oxygen heating, carry out Closed Extrusion with extruding drift (3), open upper cavity die (2) afterwards, eject drift (6) and eject forging;
(2) in finish-forging shaping work step, extruding drift (3) adopts the slot type punching, when finish-forging is shaped the pre-punched hole gross weight is clamp-oned in the groove, with the generation of avoiding folding;
(3), last punching and excision overlap, all operations finish.
2. automobile steering knuckle precision forging method according to claim 1 is characterized in that: can divide recessedly when touching the lateral compression precision performing part, the working face of extruding drift (3) is a hemispherical.
3. automobile steering knuckle precision forging method according to claim 1 is characterized in that: adopt the die cavity of compressive zone (4) to push in the die cavity of two long side legs, have passage (5) in the end of shank die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128732 CN1223418C (en) | 2002-08-10 | 2002-08-10 | Precise forging technology for automobile steering knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128732 CN1223418C (en) | 2002-08-10 | 2002-08-10 | Precise forging technology for automobile steering knuckle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1398690A true CN1398690A (en) | 2003-02-26 |
| CN1223418C CN1223418C (en) | 2005-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02128732 Expired - Fee Related CN1223418C (en) | 2002-08-10 | 2002-08-10 | Precise forging technology for automobile steering knuckle |
Country Status (1)
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| CN (1) | CN1223418C (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371129C (en) * | 2006-01-11 | 2008-02-27 | 重庆工学院 | Tech. for forging forming of hook fastener flame of wagon and maould thereof |
| CN102166615A (en) * | 2011-01-27 | 2011-08-31 | 山东金马工业集团股份有限公司 | Forging process for piston toothed part of automobile steering box |
| CN102189206A (en) * | 2011-03-01 | 2011-09-21 | 湖北巨力锻造有限公司 | Forging technology of cylinder lifting lug of automobile |
| WO2011120328A1 (en) * | 2010-03-30 | 2011-10-06 | Cao Lixin | Vertical forging method for integral type steering yoke of automobile |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
| CN102699265A (en) * | 2011-04-15 | 2012-10-03 | 大连大高阀门股份有限公司 | Mold and process for producing joint of counteractive rod |
| CN102886642A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for manufacturing steering knuckle for automobile |
| CN103328302A (en) * | 2011-05-20 | 2013-09-25 | 贝德洛工业公司 | Railcar coupler core with vertical parting line and method of manufacture |
| CN103625503A (en) * | 2008-05-23 | 2014-03-12 | 贝德洛工业公司 | Knuckle formed without a finger core |
| CN103706746A (en) * | 2014-01-10 | 2014-04-09 | 重庆应国机械制造有限责任公司 | Semi-closed type extrusion forging process with supporting shaft knuckle |
| CN104550621A (en) * | 2013-10-18 | 2015-04-29 | 丹阳市米可汽车零部件厂 | Automobile steering knuckle forging process |
| CN104972034A (en) * | 2015-06-18 | 2015-10-14 | 柳州科尔特锻造机械有限公司 | Flange forging process |
| CN105215629A (en) * | 2014-07-02 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of forging method of complicated stainless steel forging part of thin rib tape interstitial hole |
| CN106391959A (en) * | 2016-11-23 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of section mutation eccentric cylinder forging |
| CN109676071A (en) * | 2019-02-18 | 2019-04-26 | 湖北三环锻造有限公司 | A kind of net forming technology of drum-type knuckle flange pressure-sizing and mold |
| CN109894558A (en) * | 2019-04-02 | 2019-06-18 | 浙江昌亨机械有限公司 | A kind of transmission shaft goat's horn fork forging equipment and its method |
| CN110252917A (en) * | 2019-06-18 | 2019-09-20 | 湖北三环锻造有限公司 | Obtain the knuckle arm forging technology of good metal streamline |
| CN113020534A (en) * | 2021-02-25 | 2021-06-25 | 株洲中车天力锻业有限公司 | Forging method of subway bearing seat |
| CN113020537A (en) * | 2021-03-30 | 2021-06-25 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forging process of electric automobile balancing ring product |
| CN113579139A (en) * | 2021-08-09 | 2021-11-02 | 哈尔滨工业大学 | Forging method of high-performance bearing steel ball blank |
-
2002
- 2002-08-10 CN CN 02128732 patent/CN1223418C/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371129C (en) * | 2006-01-11 | 2008-02-27 | 重庆工学院 | Tech. for forging forming of hook fastener flame of wagon and maould thereof |
| CN103625503A (en) * | 2008-05-23 | 2014-03-12 | 贝德洛工业公司 | Knuckle formed without a finger core |
| WO2011120328A1 (en) * | 2010-03-30 | 2011-10-06 | Cao Lixin | Vertical forging method for integral type steering yoke of automobile |
| CN102166615A (en) * | 2011-01-27 | 2011-08-31 | 山东金马工业集团股份有限公司 | Forging process for piston toothed part of automobile steering box |
| CN102189206A (en) * | 2011-03-01 | 2011-09-21 | 湖北巨力锻造有限公司 | Forging technology of cylinder lifting lug of automobile |
| CN102189206B (en) * | 2011-03-01 | 2012-11-28 | 湖北巨力锻造有限公司 | Forging technology of cylinder lifting lug of automobile |
| CN102699265A (en) * | 2011-04-15 | 2012-10-03 | 大连大高阀门股份有限公司 | Mold and process for producing joint of counteractive rod |
| CN103328302A (en) * | 2011-05-20 | 2013-09-25 | 贝德洛工业公司 | Railcar coupler core with vertical parting line and method of manufacture |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
| CN102886642A (en) * | 2012-09-11 | 2013-01-23 | 昌利锻造有限公司 | Method for manufacturing steering knuckle for automobile |
| CN104550621A (en) * | 2013-10-18 | 2015-04-29 | 丹阳市米可汽车零部件厂 | Automobile steering knuckle forging process |
| CN103706746B (en) * | 2014-01-10 | 2015-09-30 | 重庆应国机械制造有限责任公司 | With the half-closed extrusion and forging process of back shaft knuckle |
| CN103706746A (en) * | 2014-01-10 | 2014-04-09 | 重庆应国机械制造有限责任公司 | Semi-closed type extrusion forging process with supporting shaft knuckle |
| CN105215629A (en) * | 2014-07-02 | 2016-01-06 | 西安航空动力股份有限公司 | A kind of forging method of complicated stainless steel forging part of thin rib tape interstitial hole |
| CN104972034A (en) * | 2015-06-18 | 2015-10-14 | 柳州科尔特锻造机械有限公司 | Flange forging process |
| CN106391959A (en) * | 2016-11-23 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of section mutation eccentric cylinder forging |
| CN106391959B (en) * | 2016-11-23 | 2018-06-12 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of abrupt change of cross-section bias shape cylinder forgings preparation method |
| CN109676071A (en) * | 2019-02-18 | 2019-04-26 | 湖北三环锻造有限公司 | A kind of net forming technology of drum-type knuckle flange pressure-sizing and mold |
| CN109894558A (en) * | 2019-04-02 | 2019-06-18 | 浙江昌亨机械有限公司 | A kind of transmission shaft goat's horn fork forging equipment and its method |
| CN109894558B (en) * | 2019-04-02 | 2021-06-25 | 浙江以林机械有限公司 | Forging method for claw fork of transmission shaft |
| CN110252917A (en) * | 2019-06-18 | 2019-09-20 | 湖北三环锻造有限公司 | Obtain the knuckle arm forging technology of good metal streamline |
| CN113020534A (en) * | 2021-02-25 | 2021-06-25 | 株洲中车天力锻业有限公司 | Forging method of subway bearing seat |
| CN113020537A (en) * | 2021-03-30 | 2021-06-25 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forging process of electric automobile balancing ring product |
| CN113020537B (en) * | 2021-03-30 | 2024-06-04 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forging process of electric automobile balance ring product |
| CN113579139A (en) * | 2021-08-09 | 2021-11-02 | 哈尔滨工业大学 | Forging method of high-performance bearing steel ball blank |
| CN113579139B (en) * | 2021-08-09 | 2022-07-01 | 哈尔滨工业大学 | Forging method of high-performance bearing steel ball blank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1223418C (en) | 2005-10-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Qinhuangdao Yanda Modern Integration Manufacturing Technology Development Co.,Ltd. Assignor: Yanshan University Contract record no.: 2011990000588 Denomination of invention: Precise forging technology for automobile steering knuckle Granted publication date: 20051019 License type: Exclusive License Open date: 20030226 Record date: 20110711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20140810 |
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| EXPY | Termination of patent right or utility model |