CN103818184A - Forming technology for improving strength of automobile wheels - Google Patents
Forming technology for improving strength of automobile wheels Download PDFInfo
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- CN103818184A CN103818184A CN201410099663.3A CN201410099663A CN103818184A CN 103818184 A CN103818184 A CN 103818184A CN 201410099663 A CN201410099663 A CN 201410099663A CN 103818184 A CN103818184 A CN 103818184A
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Abstract
The invention relates to the field of automobile wheel manufacturing, in particular to a forming technology for improving the strength of automobile wheels. The forming technology includes the following steps that a CAE simulation technique is adopted for performing digital simulation on the wheels, stress distribution of all parts of the wheels in the driving process of an automobile is found out, and therefore a stress distribution graph of the wheels is obtained; a corresponding forming machining die is designed according to the stress distribution graph; the forming machining die is used for strengthening the parts, where stress values are high, on the wheels. The forming technology for improving the strength of the automobile wheels has the advantages of being capable of greatly improving the overall fatigue strength of the wheels, prolonging the service life of the wheels and ensuring normal operation of the automobile.
Description
Technical field
The present invention relates to automotive wheel and manufacture field, relate to specifically a kind of forming process that improves automotive wheel intensity.
Background technology
Automotive wheel is bearing automobile all wt the parts that are rotated, can find out according to its service condition, automotive wheel is not only wanted bearing vehicle body weight and vehicle load, also to carry out the travelling of the propelling vehicle that rotatablely moves of wheel self, so automotive wheel must have higher tensile strength and yield strength, also to there be more high-fatigue strength and certain toughness, under normal circumstances, automobile design teacher is in the time of design wheel, consider load-bearing and the rotation needs of wheel, the shape of wheel is all discoid, its wheel rim is general steel plate and spoke majority all adopts high tensile steel plate to make, the oad of wheel is also because of the bearing capacity of automobile and the difference of moving velocity difference.When wheel design, also to consider: when automobile travels in scraggly road conditions, the impact effect of road surface to automotive wheel.Wheel has mounting hole, and wheel also will meet the auxiliary hole of manufacture process requirement in manufacturing process, also will meet designing requirement of automotive light weight technology etc.Therefore, spoke of vehicle wheel is designed with many holes and meets these requirements.The wheel designing for automotive wheel service condition, it is the design under a kind of perfect condition, sometimes due to the deficiency of manufacturing equipment and manufacturing process, or the quality problems of selected materials insufficient strength or material itself, tend to the phenomenon that occurs that automotive wheel lost efficacy in advance.
Summary of the invention
The object of the invention is to address the above problem, a kind of forming process that improves automotive wheel intensity is provided.
In order to realize object of the present invention, the technical solution used in the present invention is:
Improve a forming process for automotive wheel intensity, its step is as follows:
Adopt CAE analog technology to carry out digital simulation to wheel, find out the distribution of force of wheel each part in vehicle traveling process, thereby obtain the stress system of wheel;
Design corresponding forming work mould according to stress system;
By designing corresponding forming work mould, intensive treatment is carried out in the higher place of wheel upper stress value.
Loading method in the cae analysis of step a is: the whole degree of freedom of constraint wheel bottom one circle node, and with the rigid element simulation loading arm of force, at arm of force end points applied load.
The long 0.6m of the arm of force in the cae analysis of step a, at arm of force end points applied load 10597N, is equivalent to and applies moment of flexure 6358.2Nm.
The intensive treatment mode of step c is that forming work mould increases wheel deflection, improves these stress values high local yield strength and strength at repeated alternation by working hardening.
The measure of the intensive treatment of step c is to increase the hole of wheel lower impression amount 0.1-0.5mm around, makes to increase its deflection herein and does not occur cracking phenomena.
Beneficial effect of the present invention is: increase substantially the volume fatigue strength of wheel, extend the service life of wheel, guarantee the normal operation of automobile.
Accompanying drawing explanation
Fig. 1 is that the present invention carries out the analysis result figure after CAE simulation,
Fig. 2 is spoke architecture schematic diagram,
Fig. 3 is at the wind hole place of spoke impression distortion schematic diagram.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: referring to Fig. 1, Fig. 2, Fig. 3.
Improve a forming process for automotive wheel intensity, its characterization step is as follows:
Adopt CAE analog technology to carry out digital simulation to wheel, find out the distribution of force of wheel each part in vehicle traveling process, thereby obtain the stress system of wheel;
Design corresponding forming work mould according to stress system;
By designing corresponding forming work mould, intensive treatment is carried out in the higher place of wheel upper stress value.
Loading method in the cae analysis of step a is: the whole degree of freedom of constraint wheel bottom one circle node, and with the rigid element simulation loading arm of force, at arm of force end points applied load.
The long 0.6m of the arm of force in the cae analysis of step a, at arm of force end points applied load 10597N, is equivalent to and applies moment of flexure 6358.2Nm.
The intensive treatment mode of step c is that forming work mould increases wheel deflection, improves these stress values high local yield strength and strength at repeated alternation by working hardening.
The measure of the intensive treatment of step c is to increase the hole of wheel lower impression amount 0.1-0.5mm around, makes to increase its deflection herein and does not occur cracking phenomena.
Specification: through cae analysis, the brightness difference showing according to Fig. 2, can force analysis situation, and the place that spoke 1 stress value is larger appears at mounting hole 2, wind hole 3 is around located, and our definition is plane of weakness herein.The forming work mould of design impresses to be processed and can apply compression effort around to spoke hole in advance, make hole of spoke 3, mounting hole 2 peripheries occur a certain amount of distortion, under increasing on the basis of the original impression 1mm of technique conventionally left and right, impression amount 0.1-0.5mm makes total impression amount herein reach 1-1.5mm again, stressed under compression effort energy partial offset spoke actual condition, can improve steel rim spoke fatigue characteristic.We carry out respectively fatigue test to steel ring after impressing front and impression, can find out from table 1, and through this reinforcement process processing (increasing after 0.1-0.5mm volume under pressure), steel ring has improved one times nearly fatigue life.
Following form is fatigue test comparing result;
| ? | Do not increase before impression | Increase after impression |
| Flexural fatigue | 54000 times | 113000 times |
| Radially tired | 570000 times | 1050000 times |
What embodiments of the invention were announced is preferred embodiment, but is not limited to this, those of ordinary skill in the art; very easily, according to above-described embodiment, understand spirit of the present invention, and make different amplifications and variation; but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (5)
1. improve a forming process for automotive wheel intensity, its step is as follows:
Adopt CAE analog technology to carry out digital simulation to wheel, find out the distribution of force of wheel each part in vehicle traveling process, thereby obtain the stress system of wheel;
Design corresponding forming work mould according to stress system;
By designing corresponding forming work mould, intensive treatment is carried out in the higher place of wheel upper stress value.
2. a kind of forming process that improves automotive wheel intensity according to claim 1, it is characterized in that: the loading method in the cae analysis of step a is: the whole degree of freedom of constraint wheel bottom one circle node, with the rigid element simulation loading arm of force, at arm of force end points applied load.
3. a kind of forming process that improves automotive wheel intensity according to claim 2, is characterized in that: the long 0.6m of the arm of force in the cae analysis of step a, at arm of force end points applied load 10597N, is equivalent to and applies moment of flexure 6358.2Nm.
4. a kind of forming process that improves automotive wheel intensity according to claim 1, it is characterized in that: the intensive treatment mode of step c is that forming work mould increases wheel deflection, improve these stress values high local yield strength and strength at repeated alternation by working hardening.
5. a kind of forming process that improves automotive wheel intensity according to claim 4, it is characterized in that: the measure of the intensive treatment of step c is to increase the hole of wheel lower impression amount 0.1-0.5mm around, make to increase its deflection herein and do not occur cracking phenomena.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410099663.3A CN103818184A (en) | 2014-03-18 | 2014-03-18 | Forming technology for improving strength of automobile wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410099663.3A CN103818184A (en) | 2014-03-18 | 2014-03-18 | Forming technology for improving strength of automobile wheels |
Publications (1)
| Publication Number | Publication Date |
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| CN103818184A true CN103818184A (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410099663.3A Pending CN103818184A (en) | 2014-03-18 | 2014-03-18 | Forming technology for improving strength of automobile wheels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583963A (en) * | 2017-01-06 | 2017-04-26 | 中国汽车工程研究院股份有限公司 | Technology method for prolonging fatigue life of steel passenger car wheel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1387907A (en) * | 1971-04-07 | 1975-03-19 | Amil | Moulded wheels made of non-ferrous metal or plastics material |
| JP2005035330A (en) * | 2003-07-16 | 2005-02-10 | Chuo Motor Wheel Co Ltd | Manufacturing method for steel wheel disk for automobile |
| CN102248081A (en) * | 2011-06-23 | 2011-11-23 | 江铃汽车股份有限公司 | Spoke wind hole stamping and chamfering mould |
| CN102855359A (en) * | 2012-09-11 | 2013-01-02 | 北京航空航天大学 | Optimized design method for variable-thickness rims of automobile wheels |
| KR20130002380A (en) * | 2011-06-29 | 2013-01-08 | 태광금속 | Method for moldand make forging of a flange |
-
2014
- 2014-03-18 CN CN201410099663.3A patent/CN103818184A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1387907A (en) * | 1971-04-07 | 1975-03-19 | Amil | Moulded wheels made of non-ferrous metal or plastics material |
| JP2005035330A (en) * | 2003-07-16 | 2005-02-10 | Chuo Motor Wheel Co Ltd | Manufacturing method for steel wheel disk for automobile |
| CN102248081A (en) * | 2011-06-23 | 2011-11-23 | 江铃汽车股份有限公司 | Spoke wind hole stamping and chamfering mould |
| KR20130002380A (en) * | 2011-06-29 | 2013-01-08 | 태광금속 | Method for moldand make forging of a flange |
| CN102855359A (en) * | 2012-09-11 | 2013-01-02 | 北京航空航天大学 | Optimized design method for variable-thickness rims of automobile wheels |
Non-Patent Citations (2)
| Title |
|---|
| 张小格: "轿车车轮强度分析与设计方法研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 6, 15 December 2007 (2007-12-15) * |
| 陈玉发: "铝合金车轮的有限元分析与疲劳寿命预测", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 11, 15 November 2008 (2008-11-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583963A (en) * | 2017-01-06 | 2017-04-26 | 中国汽车工程研究院股份有限公司 | Technology method for prolonging fatigue life of steel passenger car wheel |
| CN106583963B (en) * | 2017-01-06 | 2018-11-20 | 中国汽车工程研究院股份有限公司 | A kind of process promoting the steel passenger car Wheel Fatigue service life |
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Application publication date: 20140528 |