CN103235839A - Method for head contour modeling based on CATIA knowledge project template - Google Patents
Method for head contour modeling based on CATIA knowledge project template Download PDFInfo
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Abstract
The invention discloses a method for head contour modeling based on a CATIA (Computer-graphics Aided Three-dimensional Interactive Application) knowledge project template. The method comprises the following steps: firstly, creating a head contour template, designing the input information of the head contour template, and determining the output information of the head contour template; secondly, setting up the invocation environment of the head contour template, and determining the input condition of the head contour template before invocation; thirdly, invocating the head contour file template, and modifying and confirming the parameter information of the head contour file; and fourthly, achieving product design check. The modeling method disclosed by the invention integrates the best head contour modeling method, so that the design process of the head contour product is free from repeated product modeling and assembly work, and the head contour template can be invocated directly; and the head contour template has much built-in head contour design knowledge, and can perform automatic knowledge check and perform self-adaption update, so that automatic prompt is sent if the knowledge content is exceeded.
Description
Technical field
The invention belongs to automobile technical field, relate to the auto parts modeling technique, especially design a kind of head envelope modeling method.
Background technology
Cad technique has obtained using widely in Design of Mechanical Product at present.Softwares such as existing C ATIA, PRO/E, UG all are based on parameter driven theory and very strong function of parametric design are provided.Based on the parametrization function, by an amount of secondary development, can be to the encapsulation of packing of some modeling process, thus realizing modeling based on template, can raise the efficiency like this and the modeling quality.Traditional head envelope modeling method is to carry out modeling, assembling at each product, carries out interference checking and modification again.Follow the prescribed order, the time cycle is longer, and the product model versatility that is arranged on different automobile types or the different seats of same model is poor, often needs to design again before-mentioned products modeling repeatedly, assembly and checkout modification process.
Summary of the invention
The object of the present invention is to provide a kind of whole modeling method of head envelope, to avoid the modeling of repetition product and assembly work.
The solution of the present invention is as follows:
A kind of head envelope modeling method based on CATIA knowledge engineering template may further comprise the steps,
(1) sets up head envelope template, the input information of design head envelope template, and the output information of definite head envelope template;
(2) build the transfer environment of head envelope template, determine the initial conditions before head envelope template is called;
(3) call header envelope file template is revised and affirmation head envelope file parameters information;
(4) product design inspection.
In the described step (1), input information comprises how much reference informations of input head portion envelope template file and drives parameter information.
Preferably, described how much reference informations comprise: carry car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, SgRP seating reference point information.
Preferably, described driving parameter information comprises: backrest angle information, seat adjustment travel information, seat position information, gearshift form information, eye ellipse Standard Selection information, eye ellipse type selecting information.
In the described step (1), output information specifically comprises head enveloping surface information and the head envelope center position information of out-feed head envelope template.
With reference to SAE J1052-1997 standard and SAE J941-2002) standard determines input information and the output information setting of head envelope template file.
In the described step (2), initial conditions before head envelope template is called is definition and input design document input element, and described input element specifically comprises unloaded car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, the SgRP seating reference point information of design document.
Call header envelope file template specifically may further comprise the steps in the described step (3),
(a) by directory browser order or path " insertion → knowledge engineering template → document template ", directly call the head envelope template file that design is finished;
(b) input element of the design document that defines and the input information that is defined in head envelope template file are matched appointments, confirms that errorless end afterwards calls.
In the described step (3), when described input element and the pairing of input information were specified, pairing input information and input element direction were consistent.
In the described step (3), parameter modification comprises following dual mode:
(I) reset the parameter value of announced input information in the process that template is called;
(II) template call finish after, directly revise the parameter value of announced input information.
Beneficial effect of the present invention is as follows: the head envelope modeling method of the integrated optimum of the method disclosed in the present, making does not need the modeling of repetition product and assembly work in the design process of head envelope product, direct call header envelope template, and a lot of head envelope of head envelope embedded within template design knowledge, can carry out automatic knowledge inspection and carry out adaptive updates, exceed knowledge content, can point out automatically.
Description of drawings
Fig. 1 is modeling process flow diagram of the present invention.
Embodiment
A kind of head envelope modeling method based on CATIA knowledge engineering template may further comprise the steps, and (1) sets up head envelope template, the input information of design head envelope template, and the output information of definite head envelope template;
In the step (1), input information comprises how much reference informations of input head portion envelope template file and drives parameter information.In the present embodiment, how much reference informations comprise: carry car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, SgRP seating reference point information.In the present embodiment, drive parameter information and comprise: backrest angle information, seat adjustment travel information, seat position information, gearshift form information, eye ellipse Standard Selection information, eye ellipse type selecting information.
In the step (1), output information specifically comprises positional information and the head envelope center position information of the head enveloping surface of out-feed head envelope template.
In the present embodiment, determine input information and the output information setting of head envelope template file with reference to SAEJ1052-1997 standard and SAEJ941-2002 standard.
When reference SAEJ1052-1997 standard as decide the input information of head envelope template file and output information arrange with reference to the time, the parameter standard of the following input information of main reference or output information arranges, in the head envelope stencil design design reference of other input information or output information can be directly with reference to the regulation of SAEJ1052-1997 standard.
1, the positional information of head enveloping surface.
A. seat travel (TL23) 〉=133mm,
X＝L31-166.91472+10.281641*(L40)-0.032032*(L40)
2
Y＝W20
Z＝H70+691.61757+0.398747*(L40)-0.059301*(L40)
2
B. seat travel 〉=100mm and＜133mm,
X＝L31-155.21472+10.281641*(L40)-0.032032*(L40)
2
Y＝W20
Z＝H70+691.51757+0.398747*(L40)-0.059301*(L40)
2
C. fixed seat (TL23=0),
X＝X，SgRP-143.89500+13.54328*(L40)-0.05588*(L40)^2
Y＝Y，SgRP(at?W20，W25，or?W26)
Z＝Z，Sg?RP+682.14905+0.49530*(L40)-0.068834*(L40)^2
---annotate: L40 is A40.
2, the axial dimension parameter of head envelope.
Wherein, to adjustable seat, the X-axis alignment of head envelope have a down dip 6.4 the degree, fixed seat is parallel with ground level.
3, envelope migration, for adjustable seat, with the Y plane separately, part in the outer part needs outside translation 23mm, and the part of middle hollow out needs level and smooth filling out.
When reference SAE J941-2002 standard as decide the input information of head envelope template file and output information arrange with reference to the time, the parameter standard of the following input information of main reference or output information arranges.In the head envelope stencil design design reference of other input information or output information can be directly with reference to the regulation of SAE J941-2002 standard.
1, the positional information of head enveloping surface is with reference to as follows:
Wherein, δ is fixed seat eye ellipse lateral angles, δ=0.719 (A40)-9.6; L1 is PRP point x coordinate; L6 is the X-direction distance that bearing circle is ordered to PRP; T is variator form (1: have clutch pedal, 0: do not have clutch pedal); W20 is SgRP y coordinate; H8 is AHP z coordinate; A40 is design backrest angle;
X
hAnd Z
hNumerical value from following table, select:
2, the axial dimension reference of head envelope.
1. 95% head envelope size.
2. 99% head envelope size.
Wherein, to adjustable seat, the X-axis alignment of head envelope have a down dip 12 the degree; Fixed seat is parallel with ground level.
3, envelope migration reference: for barbed chair, with the Y plane separately, part in the outer part needs outside translation 23mm, and the part of middle hollow out needs level and smooth filling out.
(2) build the transfer environment of head envelope template, determine the initial conditions before head envelope template is called;
Before head envelope file template calls, all ambient conditions of needs when preparing to call template according to design cycle, and unified the placement.Used all reference element unifications are placed in one or several part in the time of will calling template.
In the present embodiment, initial conditions before the head envelope template of step (2) is called is definition and input design document input element, and input element specifically comprises unloaded car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, the SgRP seating reference point information of design document.Before direct call header envelope template file, at first determine how much reference informations of this head envelope design document according to the actual design standard, to build the transfer environment of head envelope template, guarantee that environmental information is consistent with the initial conditions of head envelope template, for follow-up template call operation.
(3) call header envelope file template is revised and affirmation head envelope file parameters information;
Calling specifically of head envelope file template may further comprise the steps in the step (3),
(a) by directory browser order or path " insertion → knowledge engineering template → document template ", directly call the head envelope template file that design is finished;
(b) input element of the design document that defines and the input information that is defined in head envelope template file are matched appointments, confirms that errorless end afterwards calls.
When Environment Design that head envelope template is called well after, can directly carry out head envelope template file call operation, at this moment, demand according to actual design, the input information of the input element of design document and head envelope template file is matched appointment one by one, in the process of pairing appointment, input information and the input element direction of pairing must be consistent, and be correct to guarantee the head envelope template geometric position of calling.
Because different vehicle, head envelope design requirement difference, therefore, when directly application head envelope template is carried out the design of vehicle head envelope, need carry out certain modification to the parameter of the input information in the existing head envelope template, in the step (3), parameter modification comprises following dual mode:
(I) reset the parameter value of announced input information in the process that template is called.In the present embodiment, can directly in the pairing assignment procedure of parameter, the parameter of input information be made amendment, to satisfy design requirement.
(II) calls the parameter value of directly revising announced input information after finishing in template.In the present embodiment, but after also parameter pairing appointment is finished, directly revise the parameter of the input element of design document, to satisfy design requirement.
(4) check whether product design is feasible.Whether the test check design document satisfies the demands, if parameters is consistent with design on inspection, finishes this modeling.
The present invention at first puts out design input and the design reference of head envelope template in order.Middle modeling process carries out related by parameter with geometrical constraint; The calculating that relates to and some design rules and experience all need by embedding computing formula and by information such as VB conditional statements, reaching the purpose that drives geometric model and design review (check) (DR) and prompting; Modeling process to the centre carries out integral body packing encapsulation formation head enveloping surface feature templates at last.The device of follow-up all these features can by pre-establishing initial conditions, be set the design input value by calling template design, and full feature just can adaptive updates, forms the product model that satisfies the engineering design requirement.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. head envelope modeling method based on CATIA knowledge engineering template is characterized in that: may further comprise the steps,
(1) sets up head envelope template, the input information of design head envelope template, and the output information of definite head envelope template;
(2) build the transfer environment of head envelope template, determine the initial conditions before head envelope template is called;
(3) call header envelope file template is revised and affirmation head envelope file parameters information;
(4) product design inspection.
2. the head envelope modeling method based on CATIA knowledge engineering template according to claim 1 is characterized in that: in the described step (1), how much reference informations that input information comprises input head portion envelope template file with drive parameter information.
3. the head envelope modeling method based on CATIA knowledge engineering template according to claim 2 is characterized in that: described how much reference informations comprise: carry car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, SgRP seating reference point information.
4. the head envelope modeling method based on CATIA knowledge engineering template according to claim 2, it is characterized in that: described driving parameter information comprises: backrest angle information, seat adjustment travel information, seat position information, gearshift form information, eye ellipse Standard Selection information, eye ellipse type selecting information.
5. the head envelope modeling method based on CATIA knowledge engineering template according to claim 1, it is characterized in that: in the described step (1), output information specifically comprises head enveloping surface information and the head envelope center position information of out-feed head envelope template.
6. according to arbitrary described head envelope modeling method based on CATIA knowledge engineering template in the claim 1 to 6, it is characterized in that: determine input information and the output information setting of head envelope template file with reference to SAE J1052-1997 standard and SAE J941-2002 standard.
7. the head envelope modeling method based on CATIA knowledge engineering template according to claim 1, it is characterized in that: in the described step (2), initial conditions before head envelope template is called is definition and input design document input element, and described input element specifically comprises unloaded car floor level information, AHP heel dot information, PRP pedal reference point information, STP bearing circle central point information, the SgRP seating reference point information of design document.
8. the head envelope modeling method based on CATIA knowledge engineering template according to claim 1 is characterized in that: call header envelope file template specifically may further comprise the steps in the described step (3),
(a) by directory browser order or path " insertion → knowledge engineering template → document template ", directly call the head envelope template file that design is finished;
(b) input element of the design document that defines and the input information that is defined in head envelope template file are matched appointments, confirms that errorless end afterwards calls.
9. the head envelope modeling method based on CATIA knowledge engineering template according to claim 8 is characterized in that: in the described step (3), when described input element and the pairing of input information were specified, pairing input information and input element direction were consistent.
10. the head envelope modeling method based on CATIA knowledge engineering template according to claim 1, it is characterized in that: in the described step (3), parameter modification comprises following dual mode,
(I) reset the parameter value of announced input information in the process that template is called;
(II) template call finish after, directly revise the parameter value of announced input information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104691269A (en) * | 2013-12-06 | 2015-06-10 | 广州汽车集团股份有限公司 | Method and system for designing stabilizer bar of automotive suspension |
| CN107145622A (en) * | 2017-03-17 | 2017-09-08 | 成都飞机工业（集团）有限责任公司 | A kind of configurable product model detection method for quality |
| CN107451778A (en) * | 2017-07-31 | 2017-12-08 | 无锡市书同文数据有限公司 | Auto parts and components Data Matching processing method |
| CN108363842A (en) * | 2018-01-25 | 2018-08-03 | 汽-大众汽车有限公司 | A kind of impact evaluation method and system based on the adjustment of seat R point Z values |
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| CN101833601A (en) * | 2010-04-21 | 2010-09-15 | 苏州市奥杰汽车技术有限公司 | Knowledge-driven automobile design method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104691269A (en) * | 2013-12-06 | 2015-06-10 | 广州汽车集团股份有限公司 | Method and system for designing stabilizer bar of automotive suspension |
| CN104691269B (en) * | 2013-12-06 | 2017-04-19 | 广州汽车集团股份有限公司 | Method and system for designing stabilizer bar of automotive suspension |
| CN107145622A (en) * | 2017-03-17 | 2017-09-08 | 成都飞机工业（集团）有限责任公司 | A kind of configurable product model detection method for quality |
| CN107451778A (en) * | 2017-07-31 | 2017-12-08 | 无锡市书同文数据有限公司 | Auto parts and components Data Matching processing method |
| CN108363842A (en) * | 2018-01-25 | 2018-08-03 | 汽-大众汽车有限公司 | A kind of impact evaluation method and system based on the adjustment of seat R point Z values |
| CN108363842B (en) * | 2018-01-25 | 2021-07-27 | 一汽-大众汽车有限公司 | Influence evaluation method and system based on seat R point Z value adjustment |
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Application publication date: 20130807 |