CN112417609A - Steering transmission shaft optimization design method, computer equipment and storage medium - Google Patents
Steering transmission shaft optimization design method, computer equipment and storage medium Download PDFInfo
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Abstract
The invention belongs to the field of design of automobile steering transmission shafts, and discloses an optimal design method of a steering transmission shaft, which comprises S1, establishing and positioning a steering column model and a steering engine model through CATIA; s2, inserting a steering transmission shaft model and associating the models; s3, automatically generating steering transmission shaft parameters according to the length parameters of the output end of the steering column and the length parameters of the output end of the steering engine; s4, generating a first steering torque fluctuation curve and a second steering torque fluctuation curve according to the steering transmission shaft parameters, and drawing the first steering torque fluctuation curve and the second steering torque fluctuation curve in the same steering torque fluctuation chart; s5, adjusting the length parameter, and stopping adjustment when the updated steering torque fluctuation chart meets the design requirement; and S6, checking whether the steering transmission shaft and the motion envelope and the peripheral parts meet the arrangement requirements, and if so, finishing the optimal design of the steering transmission shaft. The invention can realize the optimized design of the steering transmission shaft without running simulation analysis.
Description
Technical Field
The invention relates to the field of design of automobile steering transmission shafts, in particular to an optimal design method of a steering transmission shaft, computer equipment and a storage medium.
Background
The steering system control mechanism mainly comprises a steering wheel, a steering column and a steering transmission shaft. In order to facilitate the arrangement, improve the safety of frontal collision of automobiles, facilitate the disassembly and assembly, and other factors, generally, a steering transmission shaft is formed by connecting two universal joints. Due to the unequal speed of the cross axle universal joint transmission, in order to avoid torque fluctuation, the following conditions need to be met:
1. the output end of the steering column and the axis of the output end of the steering engine are in the same plane;
2. the output end of the steering column and the steering transmission shaft and the output end of the steering engine and the steering transmission shaft have the same included angle.
The steering torque fluctuation can cause the steering force to be light and heavy, the feeling of a steering system of a driver is influenced, and potential danger is brought to the driving. Due to the fact that the arrangement space in the cabin is limited, the arrangement of the whole vehicle cannot meet the conditions, the steering torque fluctuation cannot be avoided, and the steering torque fluctuation needs to be reduced as much as possible.
In the prior art, steering torque fluctuation calculation is usually based on ADAMS software, and the ADAMS software is used for performing simulation analysis on the steering torque fluctuation to check whether the design requirements and the balance performance and arrangement scheme are met. However, this method has the following disadvantages: firstly, due to the complex cabin environment, the arrangement scheme of the steering transmission shaft is repeatedly adjusted according to the change of the environment scheme, the adjustment process is complicated, and the workload is large; secondly, each time the scheme of the steering transmission shaft is adjusted, simulation analysis is needed, the work repetition degree is high, and time and labor are wasted; thirdly, the steering torque fluctuation and the arrangement data cannot be checked at the same time, the relationship between the performance and the arrangement is not easy to balance, and an optimal scheme is found.
Therefore, a steering transmission shaft optimization method is required to solve the above problems.
Disclosure of Invention
The invention aims to provide an optimal design method of a steering transmission shaft, computer equipment and a storage medium, which can automatically draw parameters and motion envelopes of the steering transmission shaft by adjusting the length of an output end of a steering engine and the length of an output end of a steering column, automatically generate a steering torque fluctuation chart with integrated performance requirements in the same interface, realize the optimal design of the steering transmission shaft without running simulation analysis and conveniently balance the performance and arrangement relation of the steering transmission shaft.
In order to achieve the purpose, the invention adopts the following technical scheme:
a steering transmission shaft optimal design method comprises the following steps:
s1, establishing a steering column model and a steering wheel model through CATIA, and positioning the steering column model and the steering wheel model;
s2, inserting a steering transmission shaft model into the interface of the steering column model and the steering machine model, and associating the steering transmission shaft model, the steering column model and the steering machine model;
s3, automatically generating steering transmission shaft parameters according to the input length parameter of the steering column output end of the steering column model and the input length parameter of the steering machine output end of the steering column model, wherein the steering transmission shaft parameters comprise length, an included angle and a fixed point rotating envelope;
s4, generating a first steering torque fluctuation curve corresponding to the length parameter of the output end of the steering column and a second steering torque fluctuation curve corresponding to the length parameter of the output end of the steering machine according to the steering transmission shaft parameters, and drawing the first steering torque fluctuation curve and the second steering torque fluctuation curve in the same steering torque fluctuation chart;
s5, adjusting the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear, displaying the updated steering torque fluctuation chart through CATIA, and stopping the adjustment of the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear when a first steering torque fluctuation curve and a second steering torque fluctuation curve in the updated steering torque fluctuation chart meet design requirements;
s6, checking whether the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirements, and if so, finishing the optimal design of the steering transmission shaft; if not, repeating the step S5 until the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirement.
Preferably, in step S1, the positioning the steering column model and the steering wheel model includes:
inputting initial parameters of the steering column model and initial parameters of the steering wheel model in the CATIA so that the positions of the steering column model and the steering wheel model are fixed.
Preferably, the step S2 includes:
and after the steering transmission shaft model is inserted, establishing a constraint relation among the steering transmission shaft model, the steering column model and the steering machine model.
Preferably, the steering transmission shaft parameters include length, included angle and fixed point envelope of rotation.
Preferably, in step S3, after the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear are input, the steering transmission shaft parameter is automatically generated in the knowledge engineering module environment of the CATIA.
Preferably, the steering transmission shaft model, the steering column model and the steering machine model are rotationally connected through a universal joint, and the length parameter of the output end of the steering column is the distance from the end part of the output end of the steering column to the universal joint.
Preferably, the length parameter of the steering gear output end is the distance from the steering gear output end to the universal joint.
The present invention also provides a computer apparatus comprising: a processor and a memory;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the steering transmission shaft optimal design method as described above.
The present invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the steering transmission shaft optimal design method as described above.
The invention has the beneficial effects that: the steering transmission shaft parameters and the motion envelope are automatically obtained by adjusting the length of the output end of the steering engine and the length of the output end of the steering column, a steering torque fluctuation chart with integrated performance requirements is automatically generated in the same interface, the optimal design of the steering transmission shaft can be realized without running simulation analysis, and the performance and the arrangement relation of the steering transmission shaft are conveniently balanced.
Drawings
FIG. 1 is a flow chart of a method for optimally designing a steering transmission shaft according to the present invention;
FIG. 2 is a schematic illustration of the assembly of a steering drive shaft model with a steering column model and a steering wheel model provided by the present invention;
FIG. 3 is a tree diagram of the length parameter of the output end of the steering column and the length parameter of the output end of the steering engine in the CATIA provided by the present invention;
fig. 4 is a graph of the steering torque fluctuation provided by the present invention.
In the figure:
100. a steering column model; 200. a steering machine model; 300. and (4) a steering transmission shaft model.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides an optimal design method for a steering transmission shaft, which can realize the optimal design of the steering transmission shaft and is mainly realized by CATIA three-dimensional software. As shown in fig. 1, the optimal design method of the steering transmission shaft comprises the following steps:
and S1, establishing a steering column model and a steering wheel model through CATIA, and positioning the steering column model and the steering wheel model.
Specifically, the present embodiment establishes an assembly drawing through the CATIA three-dimensional software, establishes the steering column model 100 and the steering wheel model 200 in the assembly drawing, and positions the steering column model 100 and the steering wheel model 200 according to initially given parameters when establishing the steering column model 100 and the steering wheel model 200.
In this step, the positioning of the steering column model 100 is realized by the initial parameters of the steering column model 100, and the positioning of the steering wheel model 200 is realized by the initial parameters of the steering wheel model 200. Specifically, the initial parameter of the steering column model 100 may be a parameter required for establishing the steering column model 100 (for example, the coordinate position of each key point of the steering column model 100), and the initial parameter of the steering wheel model 200 may be a parameter required for establishing the steering wheel model 200 (for example, the coordinate position of each key point of the steering wheel model 200).
And S2, inserting a steering transmission shaft model into the interface of the steering column model and the steering machine model, and associating the steering transmission shaft model with the steering column model and the steering machine model.
That is, after the steering column model 100 and the steering wheel model 200 are established in step S1, the steering transmission shaft model 300 is inserted into the cross section of the assembly drawing, and the constraint relationship between the steering transmission shaft model 300 and the steering column model 100 and the steering wheel model 200 is established, so that the association between the steering transmission shaft model 300, the steering column model 100, and the steering wheel model 200 is realized. It should be noted that, the steering drive shaft model 300 of the present embodiment is provided with universal joints at two ends, and the steering drive shaft model 300 can be rotationally connected with the steering column model 100 and the steering wheel model 200 through the universal joints.
And S3, automatically generating a steering transmission shaft parameter according to the input length parameter of the steering column output end of the steering column model and the length parameter of the steering machine output end of the steering machine model.
That is, after inputting the length parameter of the steering column output end of the steering column model 100 (specifically, the distance from the end of the steering column output end to the universal joint, refer to the universal pitch bolt point distance-the steering shaft end in fig. 3) and the length parameter of the steering engine output end of the steering engine model 200 (specifically, the distance from the end of the steering engine output end to the universal joint, refer to the universal pitch bolt point distance-the steering engine end in fig. 3) to the CATIA software, the steering transmission shaft model 300, the steering column model 100 and the steering engine model 200 are associated with each other, so that the corresponding steering transmission shaft parameter can be directly generated through the length parameter of the steering column output end and the length parameter of the steering engine output end The included angle and the fixed point are rotationally enveloped, and the parameters of the steering transmission shaft are finally acquired. It should be noted that the above-mentioned steering transmission shaft parameters of the present embodiment are automatically generated in the knowledge engineering module environment of CATIA.
S4, generating a first steering torque fluctuation curve corresponding to the length parameter of the output end of the current steering column and a second steering torque fluctuation curve corresponding to the length parameter of the output end of the steering machine according to the steering transmission shaft parameters, and drawing the first steering torque fluctuation curve and the second steering torque fluctuation curve in the same steering torque fluctuation chart.
After the steering transmission shaft parameters are generated, the CATIA can generate a first steering torque fluctuation curve corresponding to the length parameters of the output end of the current steering column and a second steering torque fluctuation curve corresponding to the length parameters of the output end of the steering machine according to the steering transmission shaft parameters, wherein the first steering torque fluctuation curve can embody the torque change state of the output end of the steering column, and the second steering torque fluctuation curve can embody the torque change state of the output end of the steering machine. Meanwhile, the CATIA software can automatically draw the first steering torque fluctuation curve and the second steering torque fluctuation curve in the same steering torque fluctuation chart, so that designers can conveniently observe the curves more intuitively.
And S5, adjusting the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear, displaying the updated steering torque fluctuation chart through the CATIA, and stopping adjusting the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear when a first steering torque fluctuation curve and a second steering torque fluctuation curve in the updated steering torque fluctuation chart meet design requirements.
That is, after the step S4 draws the steering torque fluctuation chart, the designer determines whether the steering transmission shaft model 300 meets the design requirement by determining whether the first steering torque fluctuation curve and the second steering torque fluctuation curve in the steering torque fluctuation chart meet the design requirement, and when the steering transmission shaft model 300 meets the design requirement, the steering transmission shaft parameter corresponding to the steering torque fluctuation chart is the required steering transmission shaft parameter.
If the steering transmission shaft does not meet the design requirements, the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear need to be adjusted to generate a new steering torque fluctuation chart, and the steering torque fluctuation chart can be obtained by updating the CATIA software automatic updating function, namely, after the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear are input again, the interface for displaying the steering torque fluctuation chart can be updated to display the new steering torque fluctuation chart, then a designer continuously judges whether the steering transmission shaft model 300 meets the design requirements or not, and the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear are continuously adjusted until the steering transmission shaft model 300 meets the design requirements.
S6, checking whether the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirements, and if so, finishing the optimal design of the steering transmission shaft; if not, repeating the step S5 until the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirement.
After the steering transmission shaft model 300 meeting the design requirement is obtained in step S5, it is further determined whether the steering transmission shaft model 300 and the space between the motion envelope and the peripheral parts meet the layout requirement, specifically, a designer may perform an association operation on the steering shaft model meeting the design requirement and the peripheral parts thereof, and if the corresponding constraints can meet the assembly requirement, it is determined that the steering transmission shaft model 300 and the space between the motion envelope and the peripheral parts meet the layout requirement, otherwise, the layout requirement is not met. After the arrangement requirements are met, the steering transmission shaft parameters of the steering transmission shaft model 300 are recorded, and the optimal design of the steering transmission shaft is completed. If the arrangement requirement is not met, the step S5 is repeated until the steering transmission shaft parameters of the steering transmission shaft model 300 meeting the arrangement requirement are obtained.
According to the optimized design method of the steering transmission shaft, the parameters and the motion envelope of the steering transmission shaft can be automatically acquired, the steering torque fluctuation chart with integrated performance requirements can be automatically generated in the same interface, the optimized design of the steering transmission shaft can be realized without running simulation analysis, and the performance and the arrangement relation of the steering transmission shaft can be conveniently balanced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A steering transmission shaft optimal design method is characterized by comprising the following steps:
s1, establishing a steering column model and a steering wheel model through CATIA, and positioning the steering column model and the steering wheel model;
s2, inserting a steering transmission shaft model into the interface of the steering column model and the steering machine model, and associating the steering transmission shaft model, the steering column model and the steering machine model;
s3, automatically generating a steering transmission shaft parameter according to the input length parameter of the steering column output end of the steering column model and the input length parameter of the steering machine output end of the steering column model;
s4, generating a first steering torque fluctuation curve corresponding to the length parameter of the output end of the steering column and a second steering torque fluctuation curve corresponding to the length parameter of the output end of the steering machine according to the steering transmission shaft parameters, and drawing the first steering torque fluctuation curve and the second steering torque fluctuation curve in the same steering torque fluctuation chart;
s5, adjusting the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear, displaying the updated steering torque fluctuation chart through CATIA, and stopping the adjustment of the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear when a first steering torque fluctuation curve and a second steering torque fluctuation curve in the updated steering torque fluctuation chart meet design requirements;
s6, checking whether the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirements, and if so, finishing the optimal design of the steering transmission shaft; if not, repeating the step S5 until the steering transmission shaft model and the motion envelope and the peripheral parts meet the arrangement requirement.
2. The steering transmission shaft optimal design method according to claim 1, wherein in the step S1, the positioning the steering column model and the steering machine model includes:
inputting initial parameters of the steering column model and initial parameters of the steering wheel model in the CATIA so that the positions of the steering column model and the steering wheel model are fixed.
3. The optimal design method of the steering transmission shaft according to claim 1, wherein the step S2 includes:
and after the steering transmission shaft model is inserted, establishing a constraint relation among the steering transmission shaft model, the steering column model and the steering machine model.
4. The method of claim 1, wherein the steering shaft parameters include length, included angle, and fixed point envelope of rotation.
5. The optimal design method of the steering transmission shaft according to any one of claims 1 to 4, wherein in the step S3, after the length parameter of the output end of the steering column and the length parameter of the output end of the steering gear are input, the parameters of the steering transmission shaft are automatically generated in the knowledge engineering module environment of CATIA.
6. The optimal design method of the steering transmission shaft according to claim 1, wherein the steering transmission shaft model is rotationally connected with the steering column model and the steering machine model through universal joints, and the length parameter of the steering column output end is the distance from the end part of the steering column output end to the universal joint.
7. The optimal design method of the steering transmission shaft according to claim 6, wherein the length parameter of the output end of the steering gear is the distance from the end of the output end of the steering gear to the universal joint.
8. A computer device, comprising: a processor and a memory;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, for implementing the steering transmission shaft optimal design method according to any one of claims 1 to 7.
9. A storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing a steering drive shaft optimization design method according to any one of claims 1 to 7.
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Cited By (3)
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| CN113239451A (en) * | 2021-03-24 | 2021-08-10 | 浙江合众新能源汽车有限公司 | Matlab program-based passenger vehicle drive shaft arrangement checking method |
| CN113283007A (en) * | 2021-05-21 | 2021-08-20 | 江铃汽车股份有限公司 | Light truck transmission shaft arrangement checking method based on CATIA |
| CN113859393A (en) * | 2021-10-29 | 2021-12-31 | 岚图汽车科技有限公司 | Design method of steering column and steering gear yoke |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113239451A (en) * | 2021-03-24 | 2021-08-10 | 浙江合众新能源汽车有限公司 | Matlab program-based passenger vehicle drive shaft arrangement checking method |
| CN113283007A (en) * | 2021-05-21 | 2021-08-20 | 江铃汽车股份有限公司 | Light truck transmission shaft arrangement checking method based on CATIA |
| CN113859393A (en) * | 2021-10-29 | 2021-12-31 | 岚图汽车科技有限公司 | Design method of steering column and steering gear yoke |
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