CN108520129A - The analysis method and device at positive remaining angle are returned in motor turning - Google Patents
The analysis method and device at positive remaining angle are returned in motor turning Download PDFInfo
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- CN108520129A CN108520129A CN201810272054.1A CN201810272054A CN108520129A CN 108520129 A CN108520129 A CN 108520129A CN 201810272054 A CN201810272054 A CN 201810272054A CN 108520129 A CN108520129 A CN 108520129A
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Abstract
The invention discloses analysis methods and device that positive remaining angle is gone back in a kind of motor turning, and this method comprises the following steps:The original size tolerance range for obtaining part installation point in automobile suspension system carries out Dimension Engineering credit analysis to obtain steering gear rack bulb position degree to original size tolerance range;When determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then Multi-body kinematics analysis is carried out to obtain toe-in angle rigidity data to the steering gear rack bulb position degree;When determining the toe-in angle rigidity data in default range in stiffness, then corresponds to and export the corresponding optimized dimensions tolerance range of the part installation point.The analysis method at positive remaining angle is returned in motor turning proposed by the present invention, can optimize be calculated meet as defined in toe-in angle rigidity value, to evade the angles the steering remnants problem that vehicle occurs in the fabrication stage.
Description
Technical field
The present invention relates to field of automobile, more particularly to a kind of motor turning return the analysis method at positive remaining angle with
Device.
Background technology
With the development of economy with the progress of technology, city dweller's car ownership rapidly increasing, road traffic accident
Have become one of the important threat of human life's safety.Therefore the general safety performance for how improving automobile, has become
The most important research direction of automobile engineer.
It is well known that when automobile is when running at a low speed, when running car is to rough road or potted road surface, it is above-mentioned not
Smooth road surface can there are one incentive actions to wheel, and then the wheel of automobile is caused to deviate original driving trace.It is same with this
When, there are a slight corners for the steering wheel of automobile at this time.It should be understood that after the incentive action to wheel is eliminated, big portion
Separating vehicles remain to keep straight trip track.
However, existing still have Some vehicles because of internal system movement interference reason, automobile side after causing incentive action to be eliminated
To disk there are still certain remaining angle, automobile is caused to lead to the problem of driving running deviation.
Invention content
Based on this, the purpose of the present invention is to solve in the prior art, existing automobile can not eliminate remaining angle in time
Automobile is caused to lead to the problem of driving running deviation.
The present invention proposes that the analysis method at positive remaining angle is returned in a kind of motor turning, wherein described method includes following steps:
The original size tolerance range for obtaining part installation point in automobile suspension system carries out the original size tolerance range
Dimension Engineering credit is analysed to obtain steering gear rack bulb position degree, wherein the part installation point is at least steering gear and secondary vehicle
One kind in the installation point between installation point or vehicle body and the subframe between frame;
When determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then to the steering gear tooth
Bulb position degree carries out Multi-body kinematics analysis to obtain toe-in angle rigidity data;
When determining the toe-in angle rigidity data in default range in stiffness, then corresponds to and export the part installation point pair
The optimized dimensions tolerance range answered.
The analysis method at positive remaining angle is returned in motor turning proposed by the present invention, and part is pacified in first choice input automobile suspension system
Then the original size tolerance range decorateeed carries out Dimension Engineering credit and analyses to obtain steering gear rack bulb position degree, due to automobile
The toe-in angle stiffness difference value of left and right front-wheel directly affect the presence or absence of remaining angle, in the present invention, turned in analysis
After device rack bulb position degree, Multi-body kinematics are further carried out according to steering gear rack bulb position degree and analyze to obtain automobile
Toe-in angle rigidity data, the toe-in angle stiffness difference of vehicle right and left front-wheel is then calculated according to toe-in angle rigidity data
Value, when the difference value is in corresponding preset range, then the tolerance zone of the part after corresponding output optimizes.It is being given birth to
When production manufacture, the dimensional tolerance of the part obtained according to optimization, which is brought, to be produced, and can effectively be evaded automobile and be generated remaining angle
The problem of.
In addition, the analysis method at positive remaining angle is returned in motor turning according to the above embodiment of the present invention, can also have such as
Under additional technical characteristic:
The analysis method at positive remaining angle is returned in the motor turning, wherein the method includes:
Exceed the default range in stiffness when determining the toe-in angle rigidity data, then in the automobile suspension system
Part carry out it is dimensionally-optimised.
The analysis method at positive remaining angle is returned in the motor turning, wherein before the toe-in angle rigidity data includes the near front wheel
Beam angle rigidity and off-front wheel toe-in angular rigidity, it is described to determine the toe-in angle rigidity data in default range in stiffness,
Then the corresponding method for exporting the corresponding optimized dimensions tolerance range of the part installation point includes:
The near front wheel toe-in angular rigidity and the off-front wheel toe-in angular rigidity make difference to obtain prenex angular rigidity
Difference;
The toe-in angle rigidity difference is judged whether in the default range in stiffness, if so, corresponding output described zero
The corresponding optimized dimensions tolerance range of part installation point.
The analysis method at positive remaining angle is returned in the motor turning, wherein is carried out to the original size tolerance range described
In the step of Dimension Engineering credit analysis is to obtain steering gear rack bulb position degree, the method further includes:
Dimension Engineering credit analysis is carried out to the original size tolerance, to obtain part tolerance sensitivity, wherein described zero
Part tolerance sensitivity is that influence of the dimensional tolerance of part in the automobile suspension system to steering gear rack bulb position degree is quick
Sensitivity.
The analysis method at positive remaining angle is returned in the motor turning, wherein the method further includes:
Exceed the predeterminated position degree range when determining the steering gear rack bulb position degree, then it is outstanding to the automobile
Part in frame system, it is dimensionally-optimised that the sequence being gradually reduced according to the corresponding tolerance sensitivity carries out corresponding progress.
The analysis method at positive remaining angle is returned in the motor turning, wherein used when the Dimension Engineering credit analysis
Analysis software be 3DCS.
The analysis method at positive remaining angle is returned in the motor turning, wherein used when the Multi-body kinematics analysis
Analysis software be MSC Adams.
The present invention also proposes that the analytical equipment at positive remaining angle is returned in a kind of motor turning, wherein described device includes:
Data acquisition module, the original size tolerance range for obtaining part installation point in automobile suspension system, to described
Original size tolerance range carries out Dimension Engineering credit analysis to obtain steering gear rack bulb position degree, wherein the part installation point
One kind in the installation point between installation point or vehicle body and the subframe at least between steering gear and subframe;
First analysis module determines the steering gear rack bulb position degree within the scope of predeterminated position degree for working as
When, then Multi-body kinematics analysis is carried out to obtain toe-in angle rigidity data to the steering gear rack bulb position degree;
Second analysis module, for when determining the toe-in angle rigidity data in default range in stiffness, then corresponding to defeated
Go out the corresponding optimized dimensions tolerance range of the part installation point.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein:
Fig. 1 is the flow chart for the analysis method that positive remaining angle is gone back in the motor turning that first embodiment of the invention proposes;
Fig. 2 is the flow chart for the analysis method that positive remaining angle is gone back in the motor turning that second embodiment of the invention proposes;
Fig. 3 is the structural schematic diagram of suspension system in second embodiment of the invention;
Fig. 4 is the schematic enlarged-scale view of steering gear in suspension system shown in Fig. 3;
Fig. 5 is the schematic enlarged-scale view of fore sub frame in suspension system shown in Fig. 3;
Fig. 6 is the structural schematic diagram of the suspension system of Multi-body kinematics model construction in second embodiment of the invention;
Fig. 7 is influence signal of the steering gear rack bulb position degree to toeing-in angular rigidity in second embodiment of the invention
Figure;
Fig. 8 is that accessory size tolerance is distributed signal to the influence degree of toeing-in angular rigidity in second embodiment of the invention
Figure;
Fig. 9 is the structural schematic diagram for the analytical equipment that positive remaining angle is gone back in the motor turning that third embodiment of the invention proposes.
Primary symbols explanation:
Steering assembly | 10 | Steering gear housing | 101 |
Subframe assembly | 12 | Steering linkage | 102 |
Front brake assembly | 13 | Steering gear rack | 103 |
Front standing pillar assembly | 14 | Steering gear rack bulb | 104 |
Front rod assembly | 15 | Stamping surface | 121 |
Stabiliser bar assembly | 16 | Assemble casing | 122 |
Forward swing arm assembly | 17 |
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Existing still to have Some vehicles because of internal system movement interference reason, vehicle steering wheel is still after causing incentive action to be eliminated
There are certain remaining angles, and automobile is caused to lead to the problem of driving running deviation.
In order to solve this technical problem, the present invention proposes that the analysis method at positive remaining angle is returned in a kind of motor turning, please join
Fig. 1 is read, for the analysis method at the positive remaining angle of motor turning time that first embodiment of the invention proposes, this method includes following walks
Suddenly:
S101 obtains the original size tolerance range of part installation point in automobile suspension system, to the original size tolerance
Band carries out Dimension Engineering credit analysis to obtain steering gear rack bulb position degree.
For automobile suspension system, which includes multiple installation parts.And installation point is on each mounting surface
The variation of position degree will have a direct impact prenex angular rigidity, and then influence motor turning and go back to positive remaining angle.Therefore, in this hair
In bright, calculation optimization will be carried out to the dimensional tolerance at the size of each part and part installation point, so that point of final output
Analysis result meets production standard, to effectively evade remaining angle.
In this step, the original size tolerance range of part installation point in the suspension system is obtained first.In the present embodiment
In, which includes the installation point between installation point and vehicle body and subframe between steering gear and subframe.
This it should be noted that part installation point selection it is related to the influence degree of prenex angular rigidity with each part installation point,
Chosen in this step is that the maximum two part installation points of influence degree are not limited merely in actual modeling process
The selection of two part installation points, can be depending on actual conditions.
After the original size tolerance range for obtaining corresponding part installation point, brought into according to the original size tolerance of acquisition
Row Dimension Engineering credit is analysed.Wherein, in the present embodiment, 3DCS softwares is used to carry out Dimension Engineering credit analysis to obtain steering gear
Rack bulb position degree.
Herein it may also be noted that when carrying out Dimension Engineering credit analysis to original size tolerance, correspondence can export zero
Part tolerance sensitivity, wherein the part tolerance sensitivity refer in automobile suspension system that the dimensional tolerance of part is to steering gear
The influence susceptibility of rack bulb position degree.Namely in the suspension system, part is to steering gear rack bulb position degree
Be affected, and influence of the part to steering gear rack bulb position degree is smaller, in actual debugging optimization process,
It can be carried out according to the descending sequence of disturbance degree dimensionally-optimised.
S102, when determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then to described turn
Multi-body kinematics analysis is carried out to obtain toe-in angle rigidity data to device rack bulb position degree.
After carrying out Dimension Engineering credit and analysing to have obtained steering gear rack bulb position degree, the steering gear tooth is then judged
Whether bulb position degree is within the scope of predeterminated position degree.Wherein, if determining the steering gear rack bulb position degree default
When within the scope of position degree, then continue to carry out Multi-body kinematics analysis according to the steering gear rack bulb position degree.If conversely, judging
When exceeding predeterminated position degree range to steering gear rack bulb position degree, if illustrating, carrying out production according to current dimensional standard sets
The automobile of meter, the corresponding angles remnants do not meet actual production standard, need to carry out size to the part in automobile suspension system
Optimization.Specifically, in the present embodiment, it is dimensionally-optimised to correspond to progress according to the sequence that corresponding tolerance sensitivity is gradually reduced.
In this step, Multi-body kinematics analysis is carried out using MSC Adams softwares, to obtain the toe-in angle of vehicle front
Rigidity data.
Herein it may also be noted that for the toe-in angle rigidity data comprising the near front wheel toe-in angular rigidity and the right side
Toe-in of front wheel angular rigidity.It is after having obtained the toe-in angle rigidity data, the near front wheel toe-in angular rigidity and off-front wheel toe-in angle is rigid
It is poor that degree make, and obtains a toe-in angle rigidity difference.In subsequent step, it is only necessary to by the toe-in angle rigidity difference and preset rigid
Degree range is compared, and can determine whether the tolerance zone after output optimization.
S103, it is when determining the toe-in angle rigidity data in default range in stiffness, then corresponding to export the part peace
Decorate corresponding optimized dimensions tolerance range.
As described in step S102, the toe-in angle rigidity difference being calculated between automobile the near front wheel and off-front wheel it
Afterwards, when determining the toe-in angle rigidity data in default range in stiffness, illustrate that the corresponding remaining angle of automobile can connect at this time
By in the range of, or effectively evade, can be neglected.Therefore the corresponding optimized dimensions of output element installation point can be corresponded at this time
Tolerance range.
Herein you need to add is that, if above-mentioned toe-in angle rigidity difference exceeds default range in stiffness, if illustrate according to
Current dimensional standard carries out the automobile of production design, and the corresponding angles remnants do not meet actual production standard, it is therefore desirable to right
Part progress in automobile suspension system is dimensionally-optimised, until corresponding remaining angle finally meets production standard.
The analysis method at positive remaining angle is returned in motor turning proposed by the present invention, and part is pacified in first choice input automobile suspension system
Then the original size tolerance range decorateeed carries out Dimension Engineering credit and analyses to obtain steering gear rack bulb position degree, due to automobile
The toe-in angle stiffness difference value of left and right front-wheel directly affect the presence or absence of remaining angle, in the present invention, turned in analysis
After device rack bulb position degree, Multi-body kinematics are further carried out according to steering gear rack bulb position degree and analyze to obtain automobile
Toe-in angle rigidity data, the toe-in angle stiffness difference of vehicle right and left front-wheel is then calculated according to toe-in angle rigidity data
Value, when the difference value is in corresponding preset range, then the tolerance zone of the part after corresponding output optimizes.It is being given birth to
When production manufacture, the dimensional tolerance of the part obtained according to optimization, which is brought, to be produced, and can effectively be evaded automobile and be generated remaining angle
The problem of.
The technology contents of the present invention are described in further detail with a specific example below.Please refer to Fig. 2 extremely
Fig. 8, for the analysis method at the positive remaining angle of motor turning time that second embodiment of the invention proposes, specific implementation mode is as follows
It is described:
Please refer to Fig. 3 to Fig. 5, for the present embodiment propose suspension system, the suspension system include steering assembly 10,
Subframe assembly 12, front brake assembly 13, front standing pillar assembly 14, front rod assembly 15, stabiliser bar assembly 16 and forward swing
Arm assembly 17.
For the suspension system, front brake assembly 13 is fastened with front standing pillar assembly 14 by double bolts, and front swing arm is total
Cooperation is connect by the bulb conical surface with front brake assembly 13 at 17, forward swing arm assembly 17 is tight by bolt with subframe assembly 12
It is solidly connected cooperation.Front rod assembly 15 is bolted connection with stabiliser bar assembly 16, front standing pillar assembly 14, and stabiliser bar is total
At assembly bushing between 16 and subframe assembly 12 and it is fastened by bolts cooperation.
For steering assembly 10 comprising a steering gear housing 101 is equipped with one turn in the steering gear housing 101
To pull rod 102, steering gear housing 101 is fastened by bolts with subframe assembly 12, steering linkage 102 and front brake assembly 13
Pass through bulb taper fit.Steering linkage 102 is coordinated with steering gear rack 103 by spherical pin, i.e., it is to turn that it, which mediates central point,
To the position of device rack bulb 104.For subframe assembly 12, on the subframe assembly 12 be equipped with stamping surface 121 and
Assemble casing 122.
Referring to Fig. 6, Fig. 6 is the structural schematic diagram of the suspension system of Multi-body kinematics model construction, wherein in this implementation
In example, Multi-body kinematics analysis is carried out to the suspension system using MSC Adams softwares.
Specifically, during actual analysis, the original size tolerance of each part installation point in suspension system is obtained first
Band.As described above, the suspension system is by above-mentioned steering assembly 10, subframe assembly 12, front brake assembly 13, front standing pillar
Assembly 14, front rod assembly 15, stabiliser bar assembly 16 and forward swing arm assembly 17 form.
In the present embodiment, main choose to the maximum part installation point of toe-in angle stiffness effect degree is object, by it
Corresponding tolerance zone is input in Dimension Engineering model and is analyzed.In this step, selection is steering assembly
The corresponding dimensional tolerance of the installation point between installation point and subframe assembly 12 and vehicle body between 10 and subframe assembly 12
Then band uses 3DCS softwares to carry out Dimension Engineering credit and analyses to obtain steering gear rack bulb position degree.It needs to illustrate herein
It is that the quantity of the steering gear rack bulb 104 in steering assembly 10 is 2, namely respectively left and right bulb.
After steering gear rack bulb position degree has been calculated, exist if determining the steering gear rack bulb position degree
When in preset range, then continues Multi-body kinematics using MSC Adams softwares and analyze, obtain left and right toe-in of front wheel angular rigidity
Difference.If steering gear rack bulb position degree not within a preset range when, if illustrating to be produced according to current dimensional standard
The automobile of design, the corresponding angles remnants do not meet actual production standard, need to carry out ruler to the part in automobile suspension system
Very little optimization.
Further, after calculating analysis and having obtained left and right toe-in of front wheel angular rigidity difference, before judging the left and right front-wheel
Beam angle rigidity difference whether within a preset range, if so, explanation at this time the corresponding remaining angle of automobile within the acceptable range,
Or effectively evade, it can be neglected.Therefore the corresponding optimized dimensions tolerance range of output element installation point can be corresponded at this time.
Herein you need to add is that, if above-mentioned toe-in angle rigidity difference exceeds default range in stiffness, if illustrate according to
Current dimensional standard carries out the automobile of production design, and the corresponding angles remnants do not meet actual production standard, it is therefore desirable to right
Part progress in automobile suspension system is dimensionally-optimised, until corresponding remaining angle finally meets production standard.
Referring to Fig. 7, for steering gear rack bulb position degree in second embodiment of the invention to toeing-in angular rigidity
Influence schematic diagram.Wherein, in XZ planes, the Z-direction of steering gear rack bulb 104 (left and right bulb) relative datum point is distinguished
+ 1 ,+2, -1 and -2 namely Z=△ 1, Z=△ 2, Z=△ -1 and △ -2 Z=are adjusted to, and are compared with benchmark, are obtained
To curve respectively as shown in curve b, curve c, curve d and the curve e in Fig. 7, line on the basis of wherein curve a.
It is specific to indicate as shown in Table 1:
It is curve b that it is corresponding, which to can be seen that " T_positive_1 " in corresponding diagram 7, and " T_positive_2 " is corresponding to be
Curve c, " T_negative_1 " corresponding is curve d, and " T_negative_2 " corresponding is curve e.In the figure 7, ordinate
Change for toeing-in angle, abscissa is core wheel catenary motion.It can be seen from figure 7 that in XZ planes, by steering gear rack
The Z-direction of 104 relative datum point of bulb is adjusted to+2~-2, and corresponding toe-in angle changes in 0.5deg.
Referring to Fig. 8, the accessory size tolerance proposed for the present embodiment divides the influence degree of toeing-in angular rigidity
Cloth schematic diagram, as can be seen from Figure 8, the influence to toeing-in angular rigidity contribute first five maximum accessory size tolerance,
Serial number " 1 ", " 2 ", " 3 ", " 4 " and " 5 " is respectively in the column " Index " in corresponding diagram 8:Steering linkage Y-direction deviation (turning machine),
Lower swing arm prelocalization hole deviation (subframe), stub Y-direction deviation (Triangular Arm), turning machine master positioning deviation (subframe), the bottom
Arm prelocalization hole pin hole matching design deviation.
Referring to Fig. 9, the analytical equipment at positive remaining angle, the dress are returned in the motor turning proposed for third embodiment of the invention
It sets including sequentially connected data acquisition module 20, the first analysis module 21 and the second analysis module 22;
Wherein, the data acquisition module 20 is specifically used for:
The original size tolerance range for obtaining part installation point in automobile suspension system carries out the original size tolerance range
Dimension Engineering credit is analysed to obtain steering gear rack bulb position degree, wherein the part installation point is at least steering gear and secondary vehicle
One kind in the installation point between installation point or vehicle body and the subframe between frame;
First analysis module 21 is specifically used for:
When determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then to the steering gear tooth
Bulb position degree carries out Multi-body kinematics analysis to obtain toe-in angle rigidity data;
Second analysis module 22 is specifically used for:
When determining the toe-in angle rigidity data in default range in stiffness, then corresponds to and export the part installation point pair
The optimized dimensions tolerance range answered.
It should be appreciated that each section of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned
In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be executed with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of row technology or their combination are realized:With the logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that:Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (8)
1. the analysis method at positive remaining angle is returned in a kind of motor turning, which is characterized in that described method includes following steps:
The original size tolerance range for obtaining part installation point in automobile suspension system carries out size to the original size tolerance range
Ergonomics analysis to obtain steering gear rack bulb position degree, wherein the part installation point be at least steering gear and subframe it
Between installation point or vehicle body and the subframe between installation point in one kind;
When determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then to the steering gear rack ball
Head position degree carries out Multi-body kinematics analysis to obtain toe-in angle rigidity data;
When determining the toe-in angle rigidity data in default range in stiffness, then the corresponding output part installation point is corresponding
Optimized dimensions tolerance range.
2. the analysis method at positive remaining angle is returned in motor turning according to claim 1, which is characterized in that the method packet
It includes:
Exceed the default range in stiffness when determining the toe-in angle rigidity data, then to zero in the automobile suspension system
Part carries out dimensionally-optimised.
3. the analysis method at positive remaining angle is returned in motor turning according to claim 2, which is characterized in that the toe-in angle is rigid
Degrees of data includes the near front wheel toe-in angular rigidity and off-front wheel toe-in angular rigidity, described when determining the toe-in angle rigidity data
In default range in stiffness, then the corresponding method for exporting the corresponding optimized dimensions tolerance range of the part installation point includes:
The near front wheel toe-in angular rigidity and the off-front wheel toe-in angular rigidity make difference to obtain toe-in angle rigidity difference;
The toe-in angle rigidity difference is judged whether in the default range in stiffness, if so, corresponding export the part peace
Decorate the corresponding optimized dimensions tolerance range.
4. the analysis method at positive remaining angle is returned in motor turning according to claim 2, which is characterized in that described to described
Original size tolerance range carried out in the step of Dimension Engineering credit analysis is to obtain steering gear rack bulb position degree, and the method is also
Including:
Dimension Engineering credit analysis is carried out to the original size tolerance, to obtain part tolerance sensitivity, wherein the part is public
Poor sensitivity is influence susceptibility of the dimensional tolerance to steering gear rack bulb position degree of part in the automobile suspension system.
5. the analysis method at positive remaining angle is returned in motor turning according to claim 4, which is characterized in that the method is also wrapped
It includes:
Exceed the predeterminated position degree range when determining the steering gear rack bulb position degree, then to the automotive suspension system
It is dimensionally-optimised to correspond to progress according to the sequence that the corresponding tolerance sensitivity is gradually reduced for part in system.
6. the analysis method at positive remaining angle is returned in motor turning according to claim 2, which is characterized in that carry out the size
Used analysis software is 3DCS when ergonomics analysis.
7. the analysis method at positive remaining angle is returned in motor turning according to claim 2, which is characterized in that carry out more bodies
Used analysis software is MSC Adams when kinematics analysis.
8. the analytical equipment at positive remaining angle is returned in a kind of motor turning, which is characterized in that described device includes:
Data acquisition module, the original size tolerance range for obtaining part installation point in automobile suspension system, to described original
Tolerance zone carries out Dimension Engineering credit analysis to obtain steering gear rack bulb position degree, wherein the part installation point is at least
One kind in the installation point between installation point or vehicle body and the subframe between steering gear and subframe;
First analysis module, for when determining the steering gear rack bulb position degree within the scope of predeterminated position degree, then
Multi-body kinematics analysis is carried out to obtain toe-in angle rigidity data to the steering gear rack bulb position degree;
Second analysis module, for when determining the toe-in angle rigidity data in default range in stiffness, then corresponding to output institute
State the corresponding optimized dimensions tolerance range of part installation point.
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CN109733477A (en) * | 2019-01-22 | 2019-05-10 | 北京汽车股份有限公司 | Middle position detecting method, system and the vehicle of electric power steering |
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