CN101670417B - Steering knuckle forging molding process of heavy truck - Google Patents

Steering knuckle forging molding process of heavy truck Download PDF

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Publication number
CN101670417B
CN101670417B CN2009101910319A CN200910191031A CN101670417B CN 101670417 B CN101670417 B CN 101670417B CN 2009101910319 A CN2009101910319 A CN 2009101910319A CN 200910191031 A CN200910191031 A CN 200910191031A CN 101670417 B CN101670417 B CN 101670417B
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forging
workpiece
heavy truck
molding
dead man
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CN101670417A (en
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王德辉
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Chongqing Kai En machine-building limited company
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CHONGQING KANE MECHANICAL MANUFACTURING Co Ltd
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Abstract

The invention discloses a steering knuckle forging molding process of a heavy truck, which is suitable for the production of steering knuckles of Steyr heavy truck, the final molding shape and size are known and the material of the steering knuckles is 42CrMo; the process comprises the following steps: 1) pole pulling: pole pulling is carries out to round steel blank by a 750Kg air hammer, so as to form a workpiece formed by a cylindrical column section and a round table section; b) preforging, heading and material division: the workpiece which carries out pole pulling is arranged on a pre-forging mold of a 16000KN friction press for pre-forging, the heading and material division are carried out to the cylindrical column section, so as to lead the cylindrical column section to form a forking structure by one-time-molding; c) finish forging molding: the workpiece which is pre-forged is arranged on a molding die of a 25000KN friction press to carry out finish forging, the shape of all parts are molded one time; by adopting the process, the forging quality is effectively improved and the consumption of raw material is reduced while reducing the equipment investment cost; in addition, the production efficiency and the passing percent of products are high.

Description

Steering knuckle forging molding process of heavy truck
Technical field
The present invention relates to a kind of Forging Technology, particularly a kind of steering knuckle forging molding process of heavy truck.
Background technology
Knuckle is one of major part on the steering axle of automobile, the function of knuckle is to bear automotive front load, supporting and drive front-wheel are around the stub rotation and make motor turning, and under motoring condition, it is bearing changeable shock loading, therefore, require it to have very high intensity, especially, very high to the requirement of knuckle as the heavy-duty car of steyr truck one class, factors such as consideration equipment, the production cost of such knuckle is more than the knuckle production cost height of other kinds.
At present, the production technology that steyr is heavily blocked knuckle mainly contains two kinds: 1. use the 80000KN hot die forging press, and multistation die forging one-shot forming, the production efficiency height, quality is good, production cost is lower, but equipment investment is big; 2. use the pneumatic hammer base, fly press or friction press post forming, equipment investment is less relatively, but production efficiency is low, production cost is high, forging quality is poor, product percent of pass is lower, raw materials consumption amount height, and the pneumatic hammer base also exists speed slow, base is irregular, and temperature drop such as need reheat soon at problem, has a strong impact on production efficiency.
At above-mentioned deficiency, need to explore the forging molding process that a kind of steyr is heavily blocked knuckle, under the situation that reduces equipment investment cost, improve forging quality, reduce the raw materials consumption amount, and can guarantee that production efficiency and product percent of pass are higher.
Summary of the invention
In view of this, the invention provides a kind of steering knuckle forging molding process of heavy truck, this technology is applicable to that steyr heavily blocks the production of knuckle, and can finish the production of knuckle by low-cost equipment, improve the quality of forging simultaneously, reduce raw materials consumption, and guarantee that production efficiency and product percent of pass are higher.
Steering knuckle forging molding process of heavy truck of the present invention, the final molding shape and size of known knuckle, known its material is 42CrMo, may further comprise the steps:
A) dead man: blank is placed on the dead man swage block, use the 750Kg pneumatic hammer that the round steel blank is carried out dead man, form the workpiece that constitutes by cylindrical section and round platform section;
B) the thick and sub-material of blocking pier: the workpiece behind the dead man is placed on the blocker of 16000KN friction press and carry out blocking, cylindrical section is carried out jumping-up and sub-material, make the cylindrical section one-shot forming form the fork structure;
C) finish forging: the workpiece behind the blocking is placed on the shaping mould of 25000KN friction press and carry out finish-forging, the shape structure of one-shot forming various piece.
Further, each step Forge Heating temperature is 1180 ℃, and initial forging temperature is 1180 ℃, and final forging temperature is 800 ℃;
The beneficial effect of the invention: steering knuckle forging molding process of heavy truck of the present invention, the final molding shape and size of known knuckle, known its material is 42CrMo, may further comprise the steps: a) dead man: use the 750Kg pneumatic hammer that the round steel blank is carried out dead man, form the workpiece that constitutes by cylindrical section and round platform section; B) the thick and sub-material of blocking pier: the workpiece behind the dead man is placed on the blocker of 16000KN friction press and carry out blocking, cylindrical section is carried out jumping-up and sub-material, make the cylindrical section one-shot forming form the fork structure; C) finish forging: the workpiece behind the blocking is placed on the shaping mould of 25000KN friction press and carry out finish-forging, the shape structure of one-shot forming various piece, owing to adopted blocking to make the workpiece basic forming, required hitting power when greatly reducing the knuckle finish forging, promptly reduced requirement to production equipment, simultaneously, because metallic fiber flowed to towards the direction that helps the forging serviceability and develops when the blank-making method of step b) made moulding, the performance of forging is better than the forging that hot die forging press is produced after the moulding, and step b) adopts die forging method also can reduce the Workpiece shaping time with respect to the pneumatic hammer base, avoid temperature drop too fast and need reheat, and base rule, can be under the situation that reduces equipment investment cost by this technology, effectively improve forging quality, reduce raw materials consumption, and can guarantee that production efficiency and product percent of pass are higher.
Below in conjunction with drawings and Examples the present invention is further described.
Description of drawings
Accompanying drawing is shaping step figure of the present invention.
Accompanying drawing is shaping step figure of the present invention, as shown in the figure: the steering knuckle forging molding process of heavy truck of present embodiment, the final molding shape and size of known knuckle, known its material is 42CrMo, may further comprise the steps:
The specific embodiment
A) dead man: use the 750Kg pneumatic hammer that the round steel blank of Φ 130 is carried out dead man, form the workpiece that constitutes by cylindrical section and round platform section;
B) the thick and sub-material of blocking pier: the workpiece behind the dead man is placed on the blocker of 16000KN friction press and carry out blocking, cylindrical section is carried out jumping-up and sub-material, make the cylindrical section one-shot forming form the fork structure;
C) finish forging: the workpiece behind the blocking is placed on the shaping mould of 25000KN friction press and carry out finish-forging, the shape structure of one-shot forming various piece.
Owing to adopted the blocking operation to make the forging basic forming, greatly reduce the hitting power of knuckle final molding, thereby reduced requirement to production equipment, simultaneously, metallic fiber flowed to towards the direction that helps the forging serviceability and develops when the blank-making method of step b) can make moulding, the performance of forging is better than the forging that hot die forging press is produced after the moulding, and step b) adopts die forging method also can reduce the Workpiece shaping time with respect to the pneumatic hammer base, avoid temperature drop too fast and need reheat, and base rule, improve production efficiency greatly, reduced raw materials consumption.
In the present embodiment, each step Forge Heating temperature is 1180 ℃, and initial forging temperature is 1180 ℃, and final forging temperature is 800 ℃, to avoid defectives such as forging cracks.
In the present embodiment, in the step a), blank is placed on the dead man swage block, use pneumatic hammer that it is carried out the die forging dead man, can effectively enhance productivity, and the base rule.
The present invention in use, the contrast of economy and original technology is as follows:
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (2)

1. steering knuckle forging molding process of heavy truck, the final molding shape and size of known knuckle, known its material is 42CrMo, it is characterized in that: may further comprise the steps:
A) dead man: blank is placed on the dead man swage block, use the 750Kg pneumatic hammer that the round steel blank is carried out dead man, form the workpiece that constitutes by cylindrical section and round platform section;
B) blocking jumping-up and sub-material: the workpiece behind the dead man is placed on the blocker of 16000KN friction press and carry out blocking, cylindrical section is carried out jumping-up and sub-material, make the cylindrical section one-shot forming form the fork structure;
C) finish forging: the workpiece behind the blocking is placed on the shaping mould of 25000KN friction press and carry out finish-forging, the shape structure of one-shot forming various piece.
2. steering knuckle forging molding process of heavy truck according to claim 1 is characterized in that: each step Forge Heating temperature is 1180 ℃, and initial forging temperature is 1180 ℃, and final forging temperature is 800 ℃.
CN2009101910319A 2009-09-29 2009-09-29 Steering knuckle forging molding process of heavy truck Active CN101670417B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009101910319A CN101670417B (en) 2009-09-29 2009-09-29 Steering knuckle forging molding process of heavy truck

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CN101670417B true CN101670417B (en) 2011-08-17

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Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101972835B (en) * 2010-09-10 2012-07-04 湖北三环锻造有限公司 Closed forging technique for steering knuckle
CN102319866A (en) * 2011-07-01 2012-01-18 桂林福达重工锻造有限公司 Novel process for precision forging of disc steering knuckle
CN102500741B (en) * 2011-10-08 2016-04-20 陕西奥邦锻造有限公司 The method of a steering knuckle of heavy-duty car forging molding
CN103100625B (en) * 2011-11-09 2015-03-11 上海瑞尔实业有限公司 Precision forging process for twisting connector part of automotive chassis suspension system
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
CN102672096B (en) * 2012-05-30 2014-07-09 重庆理工大学 Precision die forging and shaping technical method for automobile steering knuckle rough type parts
CN102764955A (en) * 2012-06-26 2012-11-07 昌利锻造有限公司 Shiting fork processing method
CN102974742B (en) * 2012-08-22 2015-01-21 昌利锻造有限公司 Processing method of movable fork
CN102784879B (en) * 2012-09-03 2015-01-21 北京机电研究所 Forging technology for integrally forging hand braking pulling rod of rail wagon
CN102886642A (en) * 2012-09-11 2013-01-23 昌利锻造有限公司 Method for manufacturing steering knuckle for automobile
CN103143668A (en) * 2013-03-25 2013-06-12 重庆德卡汽车零部件制造有限公司 Forging process of lower bracket connection fork
CN105880445B (en) * 2014-09-26 2018-12-04 重庆凯恩机械制造股份有限公司 Electric screw press steyr knuckle closed forging method
CN105033155B (en) * 2015-04-23 2017-03-01 山东神力索具有限公司 A kind of electric railway processing technique of ears wedge clamp shell
CN105149484B (en) * 2015-07-11 2017-06-13 湖北三环锻造有限公司 Integral steering section forging technology with knuckle arm
CN106623716A (en) * 2015-11-02 2017-05-10 丹阳市米可汽车零部件厂 Forging process of vehicle steering knuckle
CN105945189A (en) * 2016-06-20 2016-09-21 安徽省瑞杰锻造有限责任公司 Loose tooling forging technology of I-shaped forge piece with holes
CN105945188A (en) * 2016-06-20 2016-09-21 安徽省瑞杰锻造有限责任公司 Loose tooling forging technology for large-size inner hole step forging piece
CN107214288A (en) * 2017-07-12 2017-09-29 安徽凯密克企业管理咨询有限公司 A kind of knuckle moulding process
CN107955893B (en) * 2017-12-01 2020-08-21 宁波拓普汽车电子有限公司 Forging forming method of aluminum alloy steering knuckle
CN110863093A (en) * 2019-10-23 2020-03-06 祁斌 Method for refining grains by residual heat after forging of 40Cr steering knuckle
CN110877091B (en) * 2019-12-04 2021-10-15 湖北三环锻造有限公司 Hot forging forming process method of steering knuckle arm
CN112658184A (en) * 2020-12-30 2021-04-16 陕西宏远航空锻造有限责任公司 Forging method of aluminum alloy asymmetric Y-shaped die forging

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Address after: 400900 Shuangqiao Industrial Zone, Chongqing

Patentee after: Chongqing Kai En machine-building limited company

Address before: 400900 Shuangqiao Industrial Zone, Chongqing

Patentee before: Chongqing Kane Mechanical Manufacturing Co., Ltd.