CN105224701A - A kind of method improving steering knuckle and be connected clamping force with ball stud - Google Patents
A kind of method improving steering knuckle and be connected clamping force with ball stud Download PDFInfo
- Publication number
- CN105224701A CN105224701A CN201410232062.5A CN201410232062A CN105224701A CN 105224701 A CN105224701 A CN 105224701A CN 201410232062 A CN201410232062 A CN 201410232062A CN 105224701 A CN105224701 A CN 105224701A
- Authority
- CN
- China
- Prior art keywords
- steering knuckle
- hole
- bulb
- performance assessment
- assessment criteria
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Pivots And Pivotal Connections (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The present invention relates to a kind of method improving steering knuckle and be connected clamping force with ball stud, comprise the steps: that (1) calculates steering knuckle and bulb junction rigidity of structure minimum position A; (2) size in hole to be processed, A position is determined: between the scope of the section thickness of A position, choose the maximum gauge of numerical value as hole to be processed at 0 to steering knuckle, and suppose when A position machined the hole with maximum gauge, judge the performance assessment criteria whether steering knuckle is required by permanent strain under fatigue strength, rigidity property and design maximum load, and whether bulb passes through the performance assessment criteria of bulb slip analysis; And (3) are if these performance assessment criteria are all passed through, then carry out machining hole in A position with this maximum gauge.Advantage of the present invention is, under the prerequisite meeting steering knuckle fatigue and rigidity property, can significantly improve clamping force by the optimal design of steering knuckle and bulb junction.
Description
Technical field
The invention belongs to mechanical manufacturing field, it relates to a kind of method improving steering knuckle and be connected clamping force with ball stud.
Background technology
In the connection of spindle and control arm bulb (abbreviation bulb), it is one of common connected mode that bolt connects, and it is widely used in the dilly of space characteristics of compact layout.But be thisly connected to after sale the example once occurring that bulb loosened, loosening meeting makes bulb produce the risk of fatigue break.The main performance assessment criteria whether bulb can loosen is its withdrawal force (i.e. pulling-out force), due to the outwardness of machining tolerance and the discrete distribution of bolt clamping force, makes the withdrawal force of bulb there is the risk do not met the demands.
Meanwhile, in the design process of spindle and bulb, need to consider the factors such as the tolerance clearance of bulb and steering knuckle, bolt pretightening, steering knuckle rigidity and fatigue behaviour.Bolt pretightening mainly contains two effects, and a part eliminates the tolerance clearance (gap that namely disappears power) of steering knuckle and bulb, and another part then plays the effect of clamping.Reduce steering knuckle and the gap power that disappears required for bulb tolerance clearance, can clamping force be improved, increase bulb withdrawal force.But in prior art designs, the rigidity normally weakening steering knuckle by entirety reduces the gap power that disappears, and this design can cause the fatigue behaviour of steering knuckle and rigidity property not to meet the demands.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method improving steering knuckle and be connected clamping force with bulb, to solve the above-mentioned problems in the prior art and otherwise problem.
In order to realize above-mentioned goal of the invention, present invention employs following technical scheme:
Improve steering knuckle is connected a clamping force method with bulb, it is characterized in that, described method comprises the steps:
(1) described steering knuckle and described bulb junction rigidity of structure minimum position A is calculated based on three-dimensional simulation computing method;
(2) size in hole to be processed, A position is determined: between the scope of the section thickness of A position, choose the maximum gauge of numerical value as hole to be processed 0 to described steering knuckle, and suppose when A position machined the hole with described maximum gauge, judge by described three-dimensional simulation computing method the performance assessment criteria whether described steering knuckle is required by permanent strain under fatigue strength, rigidity property and design maximum load, and whether described bulb passes through the performance assessment criteria of bulb slip analysis; And
(3) if these performance assessment criteria are all passed through, then machining hole is carried out in A position with described maximum gauge.
In the methods described above, preferably, described three-dimensional simulation computing method are finite element methods.
In the methods described above, preferably, described hole is through hole.
In the methods described above, preferably, described hole is processed by the mode of drilling.
In the methods described above, preferably, described hole has circle or oval cross section.
Beneficial effect of the present invention is: adopt raising steering knuckle of the present invention to be connected the method for clamping force with bulb, can under the prerequisite meeting steering knuckle fatigue and rigidity property, reduce the gap power that disappears of steering knuckle and bulb, and significantly improve the withdrawal force of bulb, thus add design stability.
Accompanying drawing explanation
Below with reference to drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is raising steering knuckle of the present invention is connected the steering knuckle of an embodiment of the method for clamping force structural representation with ball stud.
Fig. 2 is raising steering knuckle of the present invention is connected the steering knuckle of another embodiment of the method for clamping force structural representation with ball stud
Fig. 3 is the radius of steering knuckle and bulb junction machining hole and the graph of a relation of withdrawal force (pulling-out force).
Fig. 4 is steering knuckle and the bulb junction structural representation after processing hole in Fig. 1.
Fig. 5 is the graph of a relation of steering knuckle and bulb junction bolt clamping force and withdrawal force (pulling-out force) before and after machining hole in Fig. 1.
Embodiment
First, it should be noted that, to illustrate this raising steering knuckle by way of example and to be connected with ball stud the feature and advantage etc. of the method for clamping force below, but all descriptions are only used to be described, and should be understood as any restriction is formed to the present invention.In addition, described or implicit any single technical characteristic in each embodiment mentioned by herein, or be shown or implicit any single technical characteristic in the drawings and in which, still can between these technical characteristics (or its equivalent), proceed combination in any or delete, thus obtain other embodiments of the present invention more that may directly do not mention in this article.
The invention provides a kind of method improving steering knuckle and be connected clamping force with ball stud, for the form that the steering knuckle of each vehicle is connected with ball stud, the method can significantly improve steering knuckle by the optimal design of machining hole on steering knuckle and be connected clamping force with ball stud, can be clear that from Fig. 3, the radius of machining hole is larger, withdrawal force (i.e. pulling-out force) is larger, and the effect of gap power of reducing to disappear is more obvious.Therefore, determine that a kind of embodiment in the specific embodiments of the parameter of optimum machining hole is as follows.
Step one, based on three-dimensional simulation computing method (such as finite element method etc.), calculates steering knuckle and bulb junction rigidity of structure minimum position A, thus determines the region at place, hole site to be processed.For steering knuckle 1 as shown in Figure 1, through three-dimensional simulation computing method can draw clamp when steering knuckle junction time, rigidity of structure minimum position A is two regions of the substantial symmetry of irising out in Fig. 1, when namely clamping, the most yielding part herein, therefore for reducing the gap power that disappears that this steering knuckle 1 produces when clamping with corresponding bulb (not shown), the position in hole to be processed in steering knuckle 1 can be determined near A position.
Due to the different structure form that spindle is connected with bulb, the steering knuckle distortion position caused during bolt clamping is different, and rigidity of structure minimum position is also different.Fig. 2 shows the common structure of the another kind of spindle, when this steering knuckle 1 ' junction clamps, the region of rigidity of structure minimum position A ' for irising out in Fig. 2, namely this steering knuckle 1 ' the most yielding part when clamping with bulb (not shown) is A ' place, therefore, the maximum radius place of machining hole should be positioned near A ' position, to disappear gap power best results to make reduction.
Step 2, determines the size in hole to be processed, A position.As above set forth.At the Kong Yue great that the rigidity of structure minimum position place of steering knuckle processes, the effect of gap power of reducing to disappear is more obvious, but those skilled in the art recognizes, stub axle has rigidity requirement when designing, the radius in hole to be processed crosses the local stiffness that conference weakens A position, therefore the radius in this hole can not be excessive and cause rigidity herein not meet design requirement, and supposes that the radius of the machining hole of the maximum permission of steering knuckle when meeting rigidity requirement is R1; In addition, stub axle has the requirement of fatigue strength when designing, machining hole can weaken the fatigue strength of steering knuckle, therefore pore radius to be processed can not be excessive and cause fatigue strength not meet design requirement, and supposes that the radius of the machining hole of the maximum permission of steering knuckle when meeting rigidity requirement is R2; In addition, owing to making can contact area reducing of bulb and steering knuckle after machining hole, under some design load, bulb can make the surface of contact at steering knuckle machining hole place have the risk of conquassation, thus permanent plastic deformation is produced, in designing requirement, the permanent strain of bulb can not exceed desired value, supposes that steering knuckle is R3 at the radius of the machining hole meeting the maximum permission that permanent strain requires under design maximum load.Bulb withdrawal force is the power of examination along bulb length direction, due to can contact area the reducing of bulb and steering knuckle after machining hole, for ensureing under some dangerous design load, bulb and steering knuckle have enough contact areas, therefore the contact area of bulb and steering knuckle endoporus under design load should be avoided in machining hole position, make bulb can not slippage under design maximum load, the radius of the now machining hole of maximum permission is R4.In sum, the radius R of actual machining hole should be less than or equal to the minimum value between R1, R2, R3 and R4, i.e. min (R1, R2, R3, R4).
Specifically, the size in the hole to be processed in A position is determined like this: according to the size of slewing journal structure size, between the scope of the section thickness of A position, the maximum gauge of numerical value as hole to be processed is chosen to steering knuckle 0 (being not machining hole), and suppose when A position machined the hole with above-mentioned maximum gauge, judge whether steering knuckle passes through fatigue strength by described three-dimensional simulation computing method, the performance assessment criteria that under rigidity property and design maximum load, permanent strain requires, and whether bulb passes through the performance assessment criteria of bulb slip analysis.
Step 3, if the performance assessment criteria that permanent strain requires under three-dimensional simulation calculating steering knuckle have passed fatigue strength, rigidity property and design maximum load, and bulb have passed the performance assessment criteria of bulb slip analysis, then process this hole with this maximum gauge in A position by modes such as such as drillings.Certainly, this hole has the xsect of ellipse or circle alternatively, and the form in hole can according to actual processing technology and designing requirement adjustment.Consider that positive round processing is the easiest, in the above-described embodiments for positive circular hole.In order to prevent the local stress height near this hole, this hole preferably can be processed as through hole.
As an example, in embodiment in FIG, the section thickness at the rigidity of structure minimum position A place of this steering knuckle is 7mm, therefore choose the scope of 2.5mm-7mm in this example, and rigidity, fatigue, permanent strain, bulb slip analysis are carried out in the aperture that random selecting radius is four sizes of 2.5mm, 4mm, 5.5mm and 7mm.The result of calculation drawn by three-dimensional simulation computing method is as follows: the maximum machining hole radius 1, meeting rigidity of structure requirement is 7mm; 2, the maximum machining hole radius meeting structural fatigue requirement is 7mm; 3, the structure maximum machining hole radius that permanent strain requires under design maximum load is met for being 5.5mm; 4, the maximum machining hole radius meeting bulb not slippage is 2.5mm, figure 4 illustrates and machined the positive round tube hole schematic diagram that the radius meeting performance assessment criteria is 2.5mm in the steering knuckle of this example.Whether syndeton in actual applications for different steering knuckles and ball stud can according to follow-up four performance assessment criteria by selecting concrete parameter value.Be appreciated that the quantity of parameter is relevant to the maximum machining hole radius meeting performance assessment criteria: the quantity of parameter is more, more can obtain the aperture near critical maximum machining hole radius.Through examination, the maximum machining hole radius of this vehicle steering knuckle is 2.5mm, and after machining hole, structure can with reference to figure 4.Can be clear that from Fig. 5, the processing steering knuckle of via hole and the comparing result of the slewing journal structure in undressed hole in bulb withdrawal force (pulling-out force), curve a represents the relation of steering knuckle 1 when undressed hole (being namely in the state in Fig. 1) between bolt clamping force and withdrawal force (pulling-out force), curve b represents relation when steering knuckle 1 (is namely in the state in Fig. 4) after machining hole between bolt clamping force and withdrawal force (pulling-out force), obviously, the withdrawal force of the bulb when identical bolt clamping force after machining hole adds about 2500N, therefore the design stability that steering knuckle is connected with bulb is substantially increased.
In sum, raising steering knuckle of the present invention is connected the deficiency of method for art methods of clamping force with ball stud, consider that each mechanics parameter and mutual relationship thereof are connected the impact of withdrawal force with bulb on spindle, determine the design carrying out machining hole on the endoporus of the junction of steering knuckle and bulb, utilize the method for three dimensional FEM simulation to obtain the parameter of optimum machining hole simultaneously.Design of the present invention under the prerequisite meeting the tired and rigidity property of steering knuckle, can reduce disappear gap power, raising bulb withdrawal force, and substantially increases the stability that steering knuckle is connected with bulb.
Be enumerated above specific embodiment and illustrate raising steering knuckle of the present invention is connected clamping force method with ball stud in detail, this a few example is only for principle of the present invention and embodiment thereof are described, but not limitation of the present invention, without departing from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement.Therefore, all equivalent technical schemes all should belong to category of the present invention also by every claim of the present invention is limited.
Claims (5)
1. improve steering knuckle is connected a clamping force method with ball stud, it is characterized in that, described method comprises the steps:
(1) described steering knuckle and described bulb junction rigidity of structure minimum position A is calculated based on three-dimensional simulation computing method;
(2) size in hole to be processed, A position is determined: between the scope of the section thickness of A position, choose the maximum gauge of numerical value as hole to be processed 0 to described steering knuckle, and suppose when A position machined the hole with described maximum gauge, judge by described three-dimensional simulation computing method the performance assessment criteria whether described steering knuckle is required by permanent strain under fatigue strength, rigidity property and design maximum load, and whether described bulb passes through the performance assessment criteria of bulb slip analysis; And
(3) if these performance assessment criteria are all passed through, then machining hole is carried out in A position with described maximum gauge.
2. method according to claim 1, is characterized in that, described three-dimensional simulation computing method are finite element methods.
3. method according to claim 1 and 2, is characterized in that, described hole is through hole.
4. method according to claim 1 and 2, is characterized in that, described hole is processed by the mode of drilling.
5. method according to claim 1 and 2, is characterized in that, described hole has circle or oval cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410232062.5A CN105224701B (en) | 2014-05-29 | 2014-05-29 | A method of it improving knuckle and connect clamping force with ball stud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410232062.5A CN105224701B (en) | 2014-05-29 | 2014-05-29 | A method of it improving knuckle and connect clamping force with ball stud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105224701A true CN105224701A (en) | 2016-01-06 |
| CN105224701B CN105224701B (en) | 2018-09-25 |
Family
ID=54993669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410232062.5A Active CN105224701B (en) | 2014-05-29 | 2014-05-29 | A method of it improving knuckle and connect clamping force with ball stud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105224701B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110348110A (en) * | 2019-07-08 | 2019-10-18 | 西安交通大学 | A kind of bolt connected piece rigidity adaptive recognition methods |
| CN113609613A (en) * | 2021-07-30 | 2021-11-05 | 岚图汽车科技有限公司 | Analysis method for identifying multi-axis fracture failure of steering knuckle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179708A (en) * | 2011-03-09 | 2011-09-14 | 浙江大学宁波理工学院 | Multipoint profiling rigid clamp and method for processing thin-wall workpiece by using same |
| CN102945307A (en) * | 2012-11-27 | 2013-02-27 | 北京汽车股份有限公司 | Automobile chassis key structural member structure optimization design method |
| US20130119628A1 (en) * | 2011-11-15 | 2013-05-16 | Dana Automotive Systems Group, Llc | Vehicle knuckle with bolt-on steer arm |
-
2014
- 2014-05-29 CN CN201410232062.5A patent/CN105224701B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179708A (en) * | 2011-03-09 | 2011-09-14 | 浙江大学宁波理工学院 | Multipoint profiling rigid clamp and method for processing thin-wall workpiece by using same |
| US20130119628A1 (en) * | 2011-11-15 | 2013-05-16 | Dana Automotive Systems Group, Llc | Vehicle knuckle with bolt-on steer arm |
| CN102945307A (en) * | 2012-11-27 | 2013-02-27 | 北京汽车股份有限公司 | Automobile chassis key structural member structure optimization design method |
Non-Patent Citations (5)
| Title |
|---|
| R. D"IPPOLITO等: "《Improving the fatigue life of a vehicle knuckle with a reliability-based design optimization approach》", 《JOURNAL OF STATISTICAL PLANNING AND INFERENCE》 * |
| 兰凤崇等: "《汽车转向节拓扑优化方法研究及应用》", 《汽车工程》 * |
| 刘佳: "《轿车转向节与下摆臂连接销孔变形问题研究》", 《上海汽车》 * |
| 张琦等: "《汽车后转向节轻量化设计及试验验证》", 《现代制造工程》 * |
| 袁旦: "《汽车转向节有限元分析与优化设计》", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110348110A (en) * | 2019-07-08 | 2019-10-18 | 西安交通大学 | A kind of bolt connected piece rigidity adaptive recognition methods |
| CN110348110B (en) * | 2019-07-08 | 2022-05-20 | 西安交通大学 | Self-adaptive identification method for rigidity of bolt-to-connector |
| CN113609613A (en) * | 2021-07-30 | 2021-11-05 | 岚图汽车科技有限公司 | Analysis method for identifying multi-axis fracture failure of steering knuckle |
| CN113609613B (en) * | 2021-07-30 | 2023-08-04 | 岚图汽车科技有限公司 | Analysis method for identifying multi-axis fracture failure of steering knuckle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105224701B (en) | 2018-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170144499A1 (en) | Vehicular arm component manufacturing method and vehicular arm component | |
| KR102093051B1 (en) | Bolt and bolt manufacturing method | |
| CN105224701A (en) | A kind of method improving steering knuckle and be connected clamping force with ball stud | |
| CN105370685A (en) | Pin shaft connecting assembly and pin shaft thereof and manufacturing method for pin shaft | |
| US20130051909A1 (en) | Metal member and resin product having metal member | |
| EP0048282A1 (en) | Nib for bolt head or nut forming tool | |
| CN204340581U (en) | Front car puller hook device and there is the vehicle of this front car puller hook device | |
| JP2005265150A (en) | Steel bolt set | |
| KR20140040482A (en) | Orthotropic steel deck with holes for relieving stress | |
| CN107688697B (en) | Method for recognizing bending mode of vehicle body in whole vehicle mode | |
| CN204753384U (en) | Connection structure of orthotropic steel bridge deck board | |
| CN201306561Y (en) | 45 DEG Y-shaped forging tee structure | |
| CN205190637U (en) | Stabilizer convenient to quick location | |
| CN206065313U (en) | A kind of one or two grades of shift fork thermal recalibration moulds | |
| CN105133600A (en) | Compressive pile | |
| CN204673578U (en) | Supporting processing work platform | |
| JP6609496B2 (en) | Suspension member and manufacturing method thereof | |
| CN204387008U (en) | Cylinder rod collapsing length limit stoper | |
| CN103558081A (en) | Centralized load application device for stability test on steel beam | |
| CN214476145U (en) | Combined type positioning and splicing mechanism of LED display screen | |
| EP3971442A1 (en) | Hollow spring and manufacturing method therefor | |
| CN207554525U (en) | A kind of L-type welded nut | |
| CN106737303A (en) | A kind of frock clamp | |
| CN207788371U (en) | A kind of fixed seat coach aperture apparatus | |
| CN203817812U (en) | Auto hole turning tooling for torsion bar shaft sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |