CN116776477A - Design method and design system for parameterized arrangement of vehicle tail door hinges - Google Patents

Abstract

The application relates to the technical field of vehicle manufacturing, in particular to a design method and a design system for parameterized arrangement of a vehicle tail door hinge. A design method of a vehicle tail gate hinge parameterized arrangement, comprising: inputting a CAS surface and a hinge model, and determining the relative position relation between a hinge axis and the CAS surface based on the hinge model; selecting at least two positions in the Y direction of the CAS surface to form an X-Z section; inputting a first parameter value, and respectively determining tail gate parting points of the two positions based on the first parameter value and the relative position relation between the hinge axis and the CAS (center of gravity) plane under the X-Z section, wherein the first parameter is a gap between a vehicle body and a vehicle body tail gate; and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.

Description

Design method and design system for parameterized arrangement of vehicle tail door hinges

Technical Field

The application relates to the technical field of vehicle manufacturing, in particular to a design method and a design system for parameterized arrangement of a vehicle tail door hinge.

Background

With the increasing number of vehicle manufacturers, the market's personalized expectations for vehicles are increasing, the iterative speed of vehicles is obviously increased, and the research and development speed of vehicles is required to be further increased. In the development of a new vehicle model, a designer is first required to complete the modeling design of the vehicle, and then specific engineering design is performed based on the modeling design of the designer, so as to complete the conversion of the vehicle from a design drawing to a real object. In engineering design, an important link is vehicle body modeling generation, which is difficult to modify later once determined.

In particular, the arrangement of the parting line at the tail gate and the vehicle body of the vehicle and the hinge of the tail gate, because the hinge is used as a pivot for connecting the back gate and the top cover, the hinge axis is the first step of the design of the back gate, the modeling parting line of the back gate is directly influenced, and the design importance is self-evident.

In the design of the existing vehicle tail door hinge arrangement, the arrangement of the hinge axis and the tail door parting joint are primarily determined according to the experience of a design engineer, and then the result of motion analysis is continuously corrected until a hinge arrangement scheme meeting the requirement is obtained. The problem with this is that the design period is too long, relying too much on the experience of the engineer in the overall tail gate hinge design; meanwhile, the method cannot meet the market change that the iteration speed is continuously accelerated: once the styling style changes, all that is needed is to push it back.

Disclosure of Invention

The application provides a design method and a design system for parameterized arrangement of a vehicle tail door hinge, which are used for solving the technical problems that the existing vehicle tail door hinge design cannot be quickly adjusted and the arrangement is insufficient.

In a first aspect of the present application, a design method for parameterized arrangement of a vehicle tail gate hinge is provided, comprising:

inputting a CAS surface and a hinge model, and determining the relative position relation between a hinge axis and the CAS surface based on the hinge model;

selecting at least two positions in the Y direction of the CAS surface to form an X-Z section;

inputting a first parameter value, and respectively determining tail gate parting points of the two positions based on the first parameter value and the relative position relation between the hinge axis and the CAS (center of gravity) plane under the X-Z section, wherein the first parameter is a gap between a vehicle body and a vehicle body tail gate;

and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.

Optionally, in some embodiments of the present application, the determining the tail gate parting line based on the tail gate parting points of the two positions includes the steps of:

and inputting a second parameter value, and determining a vehicle body clearance limiting surface based on the second parameter value and a tail gate parting point, wherein the second parameter value is a minimum motion clearance value of the tail gate.

Optionally, in some embodiments of the present application, after the determining the vehicle body clearance limiting surface based on the second parameter value and the tail gate parting point, the method includes the following steps:

inputting a third parameter value and a fourth parameter value, wherein the third parameter value and the fourth parameter value are a first chamfer value and a second chamfer value;

the first chamfer edge and the second chamfer edge are determined based on the third parameter value, a fourth parameter value, and a normal determined based on the tail gate parting point and the CAS face.

Optionally, in some embodiments of the present application, after determining the first chamfer edge and the second chamfer edge, further comprising:

determining a straight edge, the straight edge being determined based on the first chamfer edge and the second chamfer edge;

judging whether the length of the straight edge meets the requirement, wherein the straight edge is the distance between the first chamfer edge and the second chamfer edge in the direction of the normal line.

Optionally, in some embodiments of the present application, the determining the relative positional relationship between the hinge axis and the CAS surface based on the hinge model includes the steps of:

a fifth parameter value is input, and the spatial distance between the hinge axis and the CAS surface is determined based on the fifth parameter value and the hinge model, wherein the fifth parameter value is the CAS surface safety distance.

Alternatively, in some embodiments of the present application, the fifth parameter value may be calculated based on the following formula:

L=a+b+c+d+e

wherein L is a fifth parameter value; a is the thickness of a turbulent plate; b is the thickness of foam material; c is the thickness of the tail gate outer plate; d is the thickness of the inner plate of the tail gate; e is the hinge to inner plate safety gap.

Optionally, in some embodiments of the present application, selecting at least two positions in the Y direction of the CAS plane to make an X-Z section includes:

the two selected positions are Y-direction symmetrical center points and the mounting points of the hinge model.

Optionally, in some embodiments of the present application, the determining the tail gate parting line based on the tail gate parting points of the two positions includes the steps of:

a stretching line is formed by connecting the tail gate parting points at the two positions smoothly;

stretching the stretching line in the Z direction to form a stretching surface, and forming the tail gate parting line by the intersecting line of the stretching surface and the CAS surface.

Optionally, in some embodiments of the present application, the determining a top cover split stitch based on the tail gate split stitch and the first parameter includes:

the top cap stitch line is formed by offsetting the tail gate stitch line in the X-direction on the CAS surface based on a first parameter value.

Optionally, in some embodiments of the present application, after the determining the top cover parting line based on the tail gate parting line and the first parameter, the method includes the steps of:

and performing motion checking analysis on the tail gate, and evaluating the design of the parting of the top cover and the tail gate.

Alternatively, in some embodiments of the application, the first parameter is 6mm-8mm.

In a second aspect of the application, there is provided a design system for a vehicle tailgate hinge parameterization arrangement, the design system comprising:

the input module is used for inputting the CAS (control architecture) plane, the hinge model and the first parameter value;

a design module for determining a relative positional relationship of a hinge axis and the CAS surface based on the hinge model; selecting at least two positions in the Y direction of the CAS surface to form an X-Z section; determining tail gate parting points of the two positions respectively based on the first parameter value and the relative position relation between the hinge axis and the CAS surface under the X-Z section, wherein the first parameter is a gap between a vehicle body and a vehicle body tail gate; and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.

In a third aspect of the present application, there is provided a vehicle comprising: an electronic device comprising at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method.

In a fourth aspect of the application, a computer-readable storage medium is provided, on which a computer program is stored, which, when being run by a computer, performs the method as described.

The application has the beneficial effects that:

according to the scheme provided by the application, when different vehicle types (CAS surfaces) are required to be replaced, the rapid adjustment and arrangement of the tail gate of the vehicle can be realized rapidly by adjusting the first parameter value, and the design work efficiency of a designer is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic flow chart of a design method of parameterized arrangement of a tail gate hinge of a vehicle;

FIG. 2 is a second flow chart of a design method of a vehicle tail gate hinge parameterization arrangement provided by the present application;

FIG. 3 is a CAS surface provided by the present application;

FIG. 4 is a hinge model provided by the present application;

fig. 5 is a section of BM car 03C provided by the application;

FIG. 6 is a schematic cross-sectional view of a tail gate parting point at Y0 provided by the present application;

FIG. 7 is an enlarged view of a portion of FIG. 6 provided in accordance with the present application;

FIG. 8 is a schematic view of the downstream connection of the slit points of the tail gate provided by the application;

fig. 9 is a schematic diagram of the manufacturing of the parting line provided by the application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper", "lower", "left", "right", "front", "rear" are generally used to refer to the directions of the upper, lower, left and right sides of the device in actual use or operation, and are specifically shown in the drawings.

It should be noted that the following description order of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

With the development of social economy, the market has increasingly high requirements on the quality and variety of automobile products, so that automobile (especially passenger car) production enterprises are required to improve the design development quality and accelerate the product development speed. At present, domestic train enterprises generally increase research and development investment, simultaneously research and develop a plurality of train models, and shorten research and development period to rob markets.

The hinge is used as a pivot for connecting the back door and the top cover, and the hinge axis is the first step of the design of the back door, so that the modeling parting of the back door is directly influenced, and the hinge is more important.

In the structural design of a vehicle, in order to ensure the consistency of the overall design of the vehicle, a vehicle body top cover and a tail gate are manufactured from the same material at one time during the manufacture. After a designer determines the arrangement positions of the tail gate sub-packages and the hinges, the vehicle body top cover and the tail gate are cut to form the vehicle body top cover and the tail gate.

In the arrangement of parting joints and tail gate hinges at the tail gate and the vehicle body of the vehicle, the design experience of engineers is excessively depended, so that the time consumption is long when the tail gate design is carried out, and the requirement of the existing vehicle host factory on rapid iteration of the vehicle type cannot be met.

Based on the design method and the design system for parameterized arrangement of the vehicle tail door hinge, the application provides a design method and a design system for parameterized arrangement of the vehicle tail door hinge, and aims to solve the technical problems that the existing vehicle tail door hinge design cannot be adjusted quickly and is insufficient in arrangement. According to the scheme, the quick arrangement and updating of the vehicle back door hinge can be realized, so that the quick arrangement and adjustment of the hinge positions in the case of changing different CAS surfaces can be realized, and the arrangement efficiency of the SUV back door hinge is improved.

The inventive solution is preferably operated by CATIA software, but is not limited thereto. The advantage of selecting the software is that CATIA is used as a main tool software for the person skilled in the art, and has wide application range and low learning cost.

The following will take CATIA software as an example of the use of software to facilitate an understanding of the scheme of the present application.

Referring to fig. 1-2, the application provides a design method for parameterized arrangement of a vehicle tail gate hinge, which comprises the following steps:

s100: a CAS surface and a hinge model are input, and a relative positional relationship of a hinge axis and the CAS surface is determined based on the hinge model.

For the CAS level, the manner in which different vehicle enterprises obtain the CAS level is slightly different, and the application is not limited.

In one specific embodiment, the CAS is obtained as follows: when the CAS surface (Concept A Surface, automobile preliminary molding surface) is input, the CAS surface mainly depends on a design draft of a vehicle designer, and the design pattern is subjected to fatlute pattern molding based on the draft, through 1:5 sludge die and 1:1 sludge die, based on 1: and 1, measuring the oil sludge model by a special three-dimensional measuring instrument to obtain the CAS surface.

Likewise, there are various ways of obtaining the hinge model, and the present application is not limited thereto. In general, the hinge model is directly selected from models provided by hinge suppliers, and this arrangement has the advantage of increasing the versatility of the vehicle parts as much as possible and reducing the manufacturing cost.

The main purpose of determining the relative position of the hinge axis and the CAS surface is to ensure that the hinge and the CAS surface do not interfere with each other, and the relative position of the hinge axis and the CAS surface is generally calculated based on the thickness of the material on the hinge and the safety gap of the tail gate, and of course, the relative position of the hinge axis and the CAS surface can be determined based on other manners.

S300: and selecting at least two positions in the Y direction of the CAS surface to form an X-Z section.

In selecting two positions of the CAS, a Y0 point (the center of symmetry in the Y direction) and a C point (the point of attachment of the hinge in the Y direction) are typically selected, and when there are multiple C points, one is optional. The advantage of setting like this is that because the tail-gate of vehicle is the symmetry setting in Y orientation usually, the shape of tail-gate in Y orientation can be better to reduction based on Y0 point and C point, and then the completion tail-gate hinge arrangement that can be better.

It should be noted that, for the arrangement point of the hinge model in the Y direction, since there are many constraints, the arrangement point is relatively fixed, and thus, in the process of designing the arrangement of the tail gate hinge, the arrangement position of the hinge in the Y direction of the vehicle can be generally considered to be known and determined.

After selecting two positions of the CAS surface in the Y direction, an X-Z section of the CAS surface is made based on the positions, and the CAS surface becomes a CAS line in the section.

S500: and inputting a first parameter value, and determining a tail gate parting point based on the first parameter value and the hinge axis, wherein the first parameter is a gap between a vehicle body and a vehicle body tail gate.

The engineering personnel inputs a first parameter value, wherein the first parameter value is the clearance between the vehicle body and the tail door, namely the DTS value. Then, a point is arbitrarily selected as a vehicle body parting point in the CAS line, and a tail gate parting point is determined based on a first parameter. At this time, on the CAS line, a portion of the vehicle body parting point forward may be regarded as a vehicle body CAS face, and a portion of the vehicle body parting point rearward may be regarded as a vehicle body CAS face, with a vehicle body parting point and a vehicle body parting point being a vehicle body clearance.

In some vehicle designs, the relative distance between the tail gate parting point and the hinge axis on the CAS line is limited due to the influence of other design factors, such as wind resistance, and the like, and the relative distance is a fixed value with different data at different positions.

In a specific embodiment, at least two positions, respectively Y0 and C, are selected in the Y direction of the CAS surface, and since the relative distances between the tail gate parting points at the two positions and the hinge axis on the CAS are fixed values with different data at different positions, the tail gate parting points at the corresponding positions can be determined by the fixed values and the first parameter values.

S700: and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.

After determining the tail gate parting points at two positions, forming a fairing connecting line at the tail gate parting points at the two positions, and then carrying out Z-direction lifting on the fairing connecting line to form a fairing lifting surface, wherein the intersecting line of the fairing lifting surface and the CAS surface is the tail gate parting line.

And then, based on the first parameter value, forward shifting the tail gate parting line to the intersection line of the plane formed by the first parameter value and the CAS to form a top cover parting line, thereby completing the arrangement of the vehicle tail gate hinge.

Therefore, when different vehicle types (CAS (control area) are required to be replaced, the design work efficiency of a designer is improved by adjusting the first parameter value to quickly adjust and arrange the tail gate arrangement of the vehicle.

Further, before step S700, the method further includes the following steps:

s610: and inputting a second parameter value, and determining a vehicle body clearance limiting surface based on the second parameter value and a tail gate parting point, wherein the second parameter value is a minimum movement clearance value.

The purpose of determining the vehicle body clearance limiting surface is that when the tail gate turns over relative to the vehicle body, a part of the structure of the tail gate enters the vehicle body, and at the moment, the vehicle body needs to be correspondingly avoided based on the movement condition of the tail gate. And for the vehicle body clearance limiting surfaces, the clearance limiting surfaces at the Y0 position and the C position correspond to the tail gate parting points at the Y0 and C positions, respectively.

After the parting point of the tail gate is determined, a circle is formed on the X-Z plane by taking the point of the hinge axis as the circle center and the distance from the hinge axis to the parting point of the tail gate as the radius, and the circle is the hinge motion track.

And then the hinge motion track is shifted forwards by a second parameter value, so that the minimum clearance limiting surface of the vehicle body can be obtained, namely, when the vehicle body is manufactured, the clearance at the vehicle body cannot exceed the clearance limiting surface, and otherwise, the tail gate is blocked from overturning.

S620: inputting a third parameter value and a fourth parameter value, wherein the third parameter value and the fourth parameter value are a first chamfer value and a second chamfer value.

In general, the third parameter value and the fourth parameter value are the same, and the chamfer value is the flanging process R angle, which is generally not lower than 2mm, preferably 2mm.

The third parameter value is a chamfer value of a flanging chamfer in contact with the CAS surface, and the fourth parameter value is a chamfer value of a flanging chamfer in contact with the vehicle body clearance limiting surface.

S630: the first chamfer edge and the second chamfer edge are determined based on the third parameter value and a normal determined based on the door split point and the CAS face.

After the third parameter value and the fourth parameter value are input, firstly, a vertical line of the CAS surface is made at the X-Z section passing through the vehicle body parting point, namely the normal line.

The first chamfer edge is then determined based on the third parameter value and the normal, and the second chamfer edge is determined based on the fourth parameter value, the normal and the body clearance limiting surface, the line connecting the intersection of the first chamfer edge and the second chamfer edge on the normal line constituting a straight edge.

By setting the third parameter value and the fourth parameter value, the design and manufacture of the junction of the roof panel and the body clearance restricting surface can be better realized in the vehicle manufacturing.

Further, after step S630, the method further includes the following steps:

s640: judging whether the length of the straight edge meets the requirement, wherein the straight edge is the distance between the first chamfer edge and the second chamfer edge in the normal direction.

It can be understood that, when the first chamfer edge and the second chamfer edge are determined, the length of the straight edge is correspondingly determined, and at this time, in order to better verify the feasibility of the design scheme, whether the scheme meets the requirement can be determined by determining whether the length of the straight edge meets the requirement. When the length of the straight edge does not meet the requirement, the method can be realized by timely adjusting the third parameter and the fourth parameter.

In a preferred embodiment, the length of the straight edge is not less than 2mm.

Further, in step S100, determining a relative positional relationship between a hinge axis and the CAS surface based on the hinge model, further includes the steps of:

s110: the CAS level and hinge model are input.

S120: and inputting a fifth parameter value, and determining the position relation between a hinge axis and the CAS surface based on the fifth parameter value and the hinge model, wherein the fifth parameter value is a CAS surface safety distance.

In step S100, when the CAS plane and the hinge model are input, it is necessary to confirm the positional relationship between the CAS plane and the hinge model.

In determining the positional relationship of the CAS surface and the hinge model, since the CAS surface and the hinge model also have other components in the actual vehicle structure, a safe distance between the hinge and the CAS surface needs to be provided to accommodate the other structure.

In the prior art, a designer preliminarily determines the position and angle of the hinge axis arrangement according to standards inside a vehicle factory and design experience of an individual. However, according to the scheme provided by the application, the fifth parameter is set, the arrangement positions of the hinge axis and the CAS are subjected to standard design, so that the design error caused by different experience of personnel is avoided, and the tail door hinge is better arranged.

In a specific embodiment, the fifth parameter value may be calculated by the following equation:

L=a+b+c+d+e

wherein L is a fifth parameter value; a is the thickness of a turbulent plate; b is the thickness of foam material; c is the thickness of the tail gate outer plate; d is the thickness of the inner plate of the tail gate; e is the hinge to inner plate safety gap.

In a typical vehicle tailgate, the safe distance between the hinge and the CAS face is mainly used to accommodate the spoiler, the foam, the tailgate inner panel, the tailgate outer panel and the safe gap, and at this time, if the values of the spoiler, the foam, the tailgate inner panel, the tailgate outer panel and the safe gap are already known in the process of arranging the tailgate hinge, the fifth parameter value can be naturally calculated, and a safe distance is set between the CAS face and the hinge.

Correspondingly, the fifth parameter may not be input at this time, but the model of the type vehicle may be directly input to adjust the positional relationship between the hinge model and the CAS surface, which essentially still falls within the scope of the present application by indirectly measuring the fifth parameter value by determining the values of the spoiler, the foam, the inner door panel, the outer door panel, the safety gap, and the like.

Of course, in alternative embodiments, for example, where the specific configuration between the CAS surface and the hinge model is not determined, the position of the tailgate hinge may be determined first by inputting a fifth predetermined parameter value, and the devices in the safe distance may be subsequently adjusted and modified.

Further, after step S700, the method further includes the following steps:

s900: and performing motion checking analysis on the tail gate, and evaluating the design of the parting of the top cover and the tail gate.

In the prior art, there are many embodiments of motion check analysis, which are not limited in the present application and are not described in detail. For example, the tilt angle and the position of the hinge axis are continuously corrected through the DMU motion analysis result to obtain the hinge axis meeting the requirement of the vehicle door motion clearance.

Examples:

referring to fig. 3, the present embodiment provides a tail gate hinge arrangement method under CATIA software to further explain the technical scheme of the present application.

Referring to fig. 3-4, a three-dimensional model of CAS surface and selected hinges is placed in the CATIA part design window;

referring to fig. 5, the BM car 03C section is placed in the CATIA part design window for reference.

A preliminary axis is established at the CATIA part design window, a new hinge axis is established at Y0 with reference to the BM car hinge axis, and the space required for the hinge arrangement is calculated from the 03C section.

And inputting a fifth parameter value, shifting the CAS surface based on the fifth parameter value, and ensuring that the CAS surface after shifting does not interfere with the hinge. And determining the relative position relation between the hinge axis and the CAS surface according to the deflected CAS surface and the calculated arrangement space required by the hinge. And then respectively establishing sections 03A and 03C in the CATIA part design window, and respectively determining parting points of the tail gate under different sections.

The method for establishing the tail gate parting point based on Y0 (Y-direction symmetry center point) and 3C (hinge model installation point, if a plurality of hinges exist, any one can be used), is consistent, and the establishment of the tail gate parting point under the Y0 section is schematically described below.

Referring to fig. 6, typical sections are respectively made through Y0, and the parting line meets the movement requirement through sketch constraint. The CAS level is the CAS line at the YO section. 1 point on the CAS line is defined as the roof split point, and then a first parameter value is entered, and the tail gate split point is determined based on the first parameter value, which in this embodiment is defined as 7mm.

And then, taking the axis of the hinge as the center, and taking the distance from the center of the hinge to the parting point of the tail gate as the radius to make a circle, wherein the circle is the track of the tail gate.

The second parameter value, i.e. the minimum motion clearance value of the tailgate, in this example 3.5mm, is entered, and this circle is offset, i.e. the minimum motion clearance, and then the lowest motion clearance limiting surface of the vehicle body is obtained.

Referring to fig. 7, a simple process feasible top cover section is then fabricated and R-angle and straight edge constraints are performed. Specifically, a third parameter value and a fourth parameter value are input first, wherein the third parameter value and the fourth parameter value are a first chamfering value and a second chamfering value; the first chamfer edge and the second chamfer edge are determined based on the third parameter value, a fourth parameter value, and a normal determined based on the tail gate parting point and the CAS face. Wherein the normal is a straight line perpendicular to the CAS line.

Similarly, the parting points of the tail gate under the C section are made, and are not described herein.

Then, a tail gate parting line is determined based on the tail gate parting points of the two positions, and a roof parting line is determined based on the tail gate parting line and the first parameter, so that the vehicle tail gate hinge arrangement is completed. Specifically, referring to fig. 8, first, the parting points of the back door in 03A and 03C are projected into the XY plane sketch, and the projected points are connected in a fairing manner.

Referring to FIG. 9, the sketch is then extracted, stretched, and then intersected with the CAS surface. And (3) carrying out fairing treatment on the intersecting line, namely, dividing the seam of the back door, and shifting the intersecting line to the X negative direction by 7mm (a first parameter value), namely, dividing the seam of the top cover.

And finally, establishing motion check in the CATIA part design window: the latest 3.5mm offset surface for the motion gap was input to the cap engineer as a boundary for cap data production.

The method can realize the rapid arrangement and updating of the SUV back door hinge, so that the rapid arrangement and adjustment of the hinge positions in the case of changing different CAS surfaces can be realized, and the arrangement efficiency of the SUV back door hinge is improved.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. A design method of a vehicle tail gate hinge parameterization arrangement, comprising:

inputting a CAS surface and a hinge model, and determining the relative position relation between a hinge axis and the CAS surface based on the hinge model;

selecting at least two positions in the Y direction of the CAS surface to form an X-Z section;

inputting a first parameter value, and respectively determining tail gate parting points of the two positions based on the first parameter value and the relative position relation between the hinge axis and the CAS (center of gravity) plane under the X-Z section, wherein the first parameter is a gap value between a vehicle body and a vehicle body tail gate;

and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.

2. A design method of a vehicle tail gate hinge parameterization arrangement according to claim 1, characterized in that the tail gate parting line is determined based on the two-position tail gate parting points, comprising the steps of:

and inputting a second parameter value, and determining a vehicle body clearance limiting surface based on the second parameter value and a tail gate parting point, wherein the second parameter value is a minimum motion clearance value of the tail gate.

3. The method for designing a parameterized arrangement of a tailgate hinge for a vehicle according to claim 2, wherein after determining a body clearance limiting surface based on the second parameter value and the tailgate parting point, comprising the steps of:

inputting a third parameter value and a fourth parameter value, wherein the third parameter value and the fourth parameter value are a first chamfer value and a second chamfer value;

the first chamfer edge and the second chamfer edge are determined based on the third parameter value, a fourth parameter value, and a normal determined based on the tail gate parting point and the CAS face.

4. A method of designing a vehicle tailgate hinge parameterization arrangement according to claim 3, further comprising, after determining the first and second chamfer edges:

determining a straight edge, the straight edge being determined based on the first chamfer edge and the second chamfer edge;

judging whether the length of the straight edge meets the requirement, wherein the straight edge is the distance between the first chamfer edge and the second chamfer edge in the direction of the normal line.

5. A design method of a vehicle tailgate hinge parameterization arrangement according to claim 1, characterized in that the determining of the relative position of the hinge axis and the CAS face based on the hinge model comprises the steps of:

a fifth parameter value is input, and the spatial distance between the hinge axis and the CAS surface is determined based on the fifth parameter value and the hinge model, wherein the fifth parameter value is the CAS surface safety distance.

6. The method of designing a vehicle tailgate hinge parameterization according to claim 5, wherein the fifth parameter value is calculated based on the following formula:

L=a+b+c+d+e

wherein L is a fifth parameter value; a is the thickness of a turbulent plate; b is the thickness of foam material; c is the thickness of the tail gate outer plate; d is the thickness of the inner plate of the tail gate; e is the hinge to inner plate safety gap.

7. A method of designing a vehicle tailgate hinge parameterization arrangement according to claim 1, wherein selecting at least two locations in the Y-direction of the CAS face for X-Z cross-sections comprises:

the two selected positions are Y-direction symmetrical center points and the mounting points of the hinge model.

8. A method of designing a vehicle tailgate hinge parameterization arrangement according to any one of claims 1-7, wherein the determining tailgate parting line based on the two-position tailgate parting points comprises the steps of:

a stretching line is formed by connecting the tail gate parting points at the two positions smoothly;

stretching the stretching line in the Z direction to form a stretching surface, and forming the tail gate parting line by the intersecting line of the stretching surface and the CAS surface.

9. The method of designing a vehicle tailgate hinge parameterization arrangement of claim 8, wherein the determining a roof split line based on the tailgate split line and the first parameter comprises:

the top cap stitch line is formed by offsetting the tail gate stitch line in the X-direction on the CAS surface based on a first parameter value.

10. A method of designing a vehicle tailgate hinge parameterization arrangement according to any one of claims 1-7, wherein after the determining of a roof split line based on the tailgate split line and the first parameter, comprising the steps of:

and performing motion checking analysis on the tail gate, and evaluating the design of the parting of the top cover and the tail gate.

11. A method of designing a vehicle tailgate hinge parameterization arrangement according to claim 1, wherein,

the first parameter is 6mm-8mm.

12. A design system for a vehicle tailgate hinge parameterization arrangement, the design system comprising:

the input module is used for inputting the CAS (control architecture) plane, the hinge model and the first parameter value;

a design module for determining a relative positional relationship of a hinge axis and the CAS surface based on the hinge model; selecting at least two positions in the Y direction of the CAS surface to form an X-Z section; determining tail gate parting points of the two positions respectively based on the first parameter value and the relative position relation between the hinge axis and the CAS surface under the X-Z section, wherein the first parameter is a gap between a vehicle body and a vehicle body tail gate; and determining a tail gate parting line based on the tail gate parting points of the two positions, and determining a top cover parting line based on the tail gate parting line and the first parameter to complete the arrangement of the tail gate hinge of the vehicle.