CN115114720B - Solving method and device for parting line range of vehicle door - Google Patents
Solving method and device for parting line range of vehicle door Download PDFInfo
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Abstract
The embodiment of the invention provides a solving method and a solving device for a parting line range of a vehicle door. According to the embodiment of the invention, the rear boundary of the door parting line and the front boundary of the door parting line are rapidly determined according to the provided hinge axis, the door outer plate molding surface, the tolerance, the first safety distance between the door and the front end accessory, the second safety distance between the door and the hinge, the theoretical opening angle and the over-opening angle of the hinge, so that the door parting line range is determined, the calculation logic is optimized, and the problems that a great amount of manual section check, a longer design period and huge workload are required for designing the door parting line are avoided.
Description
Technical Field
The invention relates to the technical field of automobile design, in particular to a method and a device for solving a parting line range of a vehicle door.
Background
The door is a moving part of the automobile, and the parting line of the door is a key point for ensuring that the door is not interfered with other fixed parts in the opening process.
The existing design of the vehicle door parting line requires a designer to determine a version of preliminary parting line firstly, then a structural engineer puts forward the modification and optimization requirement of parting line according to performance and technological conditions, if modeling feedback is not feasible, an engineering department is required to give parting line checking results by manually checking sections of a plurality of key positions, and the parting line is repeatedly modified according to the results until the vehicle door opening requirement is met. The design of the parting line of the vehicle door needs to carry out a large amount of manual section checking, and has longer design period and huge workload.
Accordingly, there is a need in the art for improvement.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention are provided to provide a method and apparatus for solving the above-mentioned problems or at least partially solving the above-mentioned problems in a vehicle door parting line range.
According to a first aspect of the present invention, there is provided a method for solving a door parting line range, the method comprising:
Providing a hinge axis, a door outer panel molding surface, a tolerance, a first safety distance between a door and a front end fitting, a second safety distance between the door and the hinge, a theoretical opening angle and an over-opening angle of the hinge;
A normal plane of the hinge axis is made, and a first curve is fitted in the normal plane, wherein the first curve meets the matching section of the front end fitting and the vehicle door with tolerance at each point on the first curve, so that the distance between the envelope of the vehicle door section rotating around the hinge axis and the front end fitting section meets the first safety distance;
Stretching the first curve along a hinge axis, and determining a first intersection line of a stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line;
Reversely rotating the hinge flanging surface with interference risk to an over-opening angle around a hinge axis, taking any point of a second intersection line of the rotated hinge flanging surface and the outer plate molding surface as a hinge axis vertical surface, intersecting the hinge axis vertical surface with the vehicle door outer plate molding surface to obtain a second curve, and determining a second sharp point on the second curve, wherein the second sharp point is used for making a distance between a vehicle door section with tolerance and the rotated hinge flanging surface to meet the second safety distance;
Translating the second intersection line to the second sharp point, and determining a front boundary of a vehicle door parting line;
and determining a vehicle door parting line according to the rear boundary and the front boundary.
According to a second aspect of the present invention, there is provided a vehicle door parting line range solving apparatus, the apparatus comprising:
The input module is used for providing a hinge axis, a door outer plate molding surface, a tolerance, a first safety distance between the door and a front end fitting, a second safety distance between the door and the hinge, a theoretical opening angle and an over-opening angle of the hinge;
a first determining module for making a normal plane of the hinge axis and fitting a first curve in the normal plane, the first curve satisfying a fitting section of the front end fitting and the door with a tolerance at each point thereon such that a distance between an envelope of the section of the door rotated about the hinge axis and the section of the front end fitting satisfies the first safety distance;
A stretching module for stretching the first curve along a hinge axis and determining a first intersection line of the stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line;
The second determining module is used for reversely rotating the hinge flanging surface with interference risk to an over-opening angle around a hinge axis, taking a midpoint of a second intersection line of the rotated hinge flanging surface and the outer plate molding surface as a hinge axis vertical surface, intersecting the hinge axis vertical surface with the vehicle door outer plate molding surface to obtain a second curve, and determining a second sharp point on the second curve, wherein the distance between a vehicle door section with tolerance at the second sharp point and the rotated hinge flanging surface meets the second safety distance;
The translation module is used for translating the second intersection line to the second sharp point and determining the front boundary of the vehicle door parting line;
and the third determining module is used for determining the parting line range of the vehicle door according to the rear boundary and the front boundary.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction implementing the steps of the method according to the first aspect when executed by the processor.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
The embodiment of the invention has the following advantages:
According to the embodiment of the invention, the rear boundary of the door parting line and the front boundary of the door parting line are rapidly determined according to the provided hinge axis, the door outer plate molding surface, the tolerance, the first safety distance between the door and the front end accessory, the second safety distance between the door and the hinge, the theoretical opening angle and the over-opening angle of the hinge, so that the door parting line range is determined, the calculation logic is optimized, and the problems that a great amount of manual section check, a longer design period and huge workload are required for designing the door parting line are avoided.
Drawings
FIG. 1 is a flow chart of a method for solving a vehicle door parting line range provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a first curve solving process in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a process for solving a rear boundary of a door parting line in an embodiment of the invention;
FIG. 4 is a schematic diagram of a solution process for a second cusp in an embodiment of the invention;
FIG. 5 is a schematic view of the parting line range of a vehicle door in an embodiment of the invention;
fig. 6 is a block diagram of a device for solving a parting line range of a vehicle door according to an embodiment of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
Referring to fig. 1, a flowchart of a method for solving a door parting line range is shown, and the method specifically may include steps 101 to 106:
Step 101, providing a hinge axis, a door outer panel molding surface, a tolerance, a first safety distance between a door and a front end fitting, a second safety distance between the door and the hinge, a theoretical opening angle and an over-opening angle of the hinge.
In the step 101, a hinge axis is determined in advance according to a hinge mounting position, a door outer panel molding surface is designed, and a first safety distance between a door and a front end fitting, a second safety distance between the door and the hinge, a tolerance, a theoretical opening angle and an over opening angle of the hinge are determined at the same time, wherein the first safety distance is a safety distance that the door does not scrape the front end fitting, the second safety distance is a safety distance that the door does not interfere the hinge, and the first safety distance, the second safety distance, the theoretical opening angle and the over opening angle of the door can be changed according to actual door design requirements.
Step 102, a normal plane of the hinge axis is made, and a first curve is fitted in the normal plane, wherein the first curve meets the matching section of the front end fitting and the vehicle door with tolerance at each point on the first curve, so that the distance between the envelope of the vehicle door section rotating around the hinge axis and the front end fitting section meets the first safety distance.
In this step 102, a point is optionally taken as a normal plane to the door hinge axis, and then the above-mentioned first curve is fitted in this normal plane, which curve satisfies the fit profile of the front end fitting with tolerance to the door at each point thereon, just so that the distance of the envelope of the door profile rotating about the hinge axis from the front end fitting profile satisfies the first safety distance that the door is not scraped from the front end fitting.
Wherein the front end fitting section is the mating section; because of the certain deviation in the installation of the front end fitting, it is necessary to refer to the fitting cross section of the front end fitting with tolerance and the door when fitting the first curve.
Optionally, in an embodiment of the present invention, when the vehicle door is a front vehicle door, the front end fitting is a fender; when the door is a rear door, the front end fitting is a front door.
The front door parting line is mainly used for ensuring that the front door is not scratched or interfered with the fender and the hinge when being opened, and the rear door parting line is mainly used for ensuring that the rear door is not scratched or interfered with the front door and the hinge when being opened, so that in the solving method of the vehicle door parting line range provided by the embodiment of the invention, when the vehicle door is the front door, the front end accessory is set to be the fender; when the door is a rear door, the front end fitting is set as a front door. Therefore, the method provided by the embodiment of the invention is suitable for the design of the parting line of the front door and the parting line of the rear door.
And 103, stretching the first curve along the hinge axis, and determining a first intersection line of the stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line.
In this step 103, the obtained fitted curve is stretched along the hinge axis to form a stretched curved surface, and the stretched curved surface and the outer plate molding surface may form a first intersecting line, where the first intersecting line may be determined as a door parting line rear boundary of the current door, because the first curve satisfies a fitting section of the front end fitting with a tolerance to the door at each point thereof, just such that a distance between an envelope of the door section rotating around the hinge axis and the front end fitting section satisfies a first safety distance that the door is not scraped with the front end fitting.
And 104, reversely rotating the hinge flanging surface to an over-opening angle around a hinge axis, taking any point in a second intersection line of the rotated hinge flanging surface and the outer plate molding surface as a hinge axis vertical surface, intersecting the hinge axis vertical surface and the outer plate molding surface to obtain a second curve, and determining a second sharp point on the second curve, wherein the second sharp point is used for making a distance between a vehicle door section with a tolerance and the rotated hinge flanging surface to meet the second safety distance.
In the step 104, the hinge flanging surface with interference risk is reversely rotated around the hinge axis to be in an over-opening angle state, and is intersected with the door outer plate molding surface to form the second intersection line, a hinge axis vertical plane is formed at any point in the second intersection line, the hinge axis vertical plane is intersected with the door outer plate molding surface to obtain a second curve, a point is found on the second curve, and the door section with tolerance at the point and the distance between the rotated hinge flanging surface are satisfied to satisfy a second safety distance that the door does not interfere with the hinge.
Optionally, in the step of taking any point of the second intersecting line of the rotated hinge flanging surface and the outer plate molding surface as the hinge axis vertical surface, taking the midpoint of the second intersecting line of the rotated hinge flanging surface and the outer plate molding surface as the hinge axis vertical surface can reduce errors and calculation.
Step 105, translating the second intersecting line to the second sharp point, and determining the front boundary of the vehicle door parting line.
In step 105, since the second sharp point is a point on a second curve intersecting the door molding surface via a hinge axis vertical plane intersecting any one of the second intersecting lines, and the second sharp point is a point on a second curve satisfying the door cross section with tolerance at the point and the rotated hinge burring surface distance being equal to a second safety distance at which the door does not interfere with the hinge, the front boundary of the door parting line can be obtained by translating the second intersecting line of the rotated hinge burring surface and the door molding surface to the second sharp point, i.e., a curve passing through the second sharp point and parallel to the second intersecting line is determined as the front boundary of the door parting line.
And 106, determining a vehicle door parting line according to the rear boundary and the front boundary.
In step 106, the range of the door parting line can be obtained based on the front boundary of the door parting line and the rear boundary of the door parting line determined in the previous step, so that the molding of the parting line is facilitated.
The embodiment of the invention has the following advantages:
According to the embodiment of the invention, the rear boundary of the door parting line and the front boundary of the door parting line are rapidly determined according to the provided hinge axis, the door outer plate molding surface, the tolerance, the first safety distance between the door and the front end accessory, the second safety distance between the door and the hinge, the theoretical opening angle and the over-opening angle of the hinge, so that the door parting line range is determined, the calculation logic is optimized, and the problems that a great amount of manual section check, a longer design period and huge workload are required for designing the door parting line are avoided.
Optionally, in an embodiment, the fitting the first curve in the normal plane includes steps 201 to 205.
Step 201, starting from the hinge axis, sequentially making a plurality of first straight lines parallel to the X-axis direction in the Y-axis direction in the normal plane at preset intervals
Step 202, for each first straight line, taking a first observation point on the first straight line to make a first outer plate flanging section with tolerance, and making a front end fitting section according to the clearance definition of parting lines;
step 203, taking the axis of the hinge as the center of a circle to serve as an circumscribed circle of the flanging section of the first outer plate, and measuring a first distance between the circumscribed circle and the section of the front end fitting;
204, solving the first observation point which meets the first distance equal to the first safety distance by taking the distance between the first observation point and a first reference point on the first straight line as an independent variable, and taking the first observation point as the first point;
Step 205, fitting according to the first sharp point corresponding to each first line, and determining the first curve.
In step 201, after any point on the hinge axis is made, a first straight line parallel to the X-axis is started at a predetermined interval from the hinge axis in the Y-axis direction in the normal plane, and then a first straight line parallel to the X-axis is made at intervals until the first straight line exceeds the front-end fitting section.
In the steps 202 to 203, for each of the first straight lines, an outer plate flanging section without tolerance is made at any point on the first straight line, then a front end fitting section is made according to the clearance definition of the parting line, then an outer plate flanging section with tolerance is made according to the tolerance requirement, namely the first outer plate flanging section, then an circumscribed circle of the first outer plate flanging section is made by taking the hinge axis as the circle center, and a first distance between the circumscribed circle and the front end fitting section is measured.
In the step 204, the distance between the first observation point and the first reference point on the first straight line is taken as an independent variable, that is, the steps 202 to 203 are repeatedly executed by changing the position of the first observation point on the first straight line, and the first observation point satisfying the first distance equal to the first safety distance is solved as the first sharp point corresponding to the first straight line; and then sequentially determining the first sharp points corresponding to other first straight lines according to the steps until the first sharp points corresponding to all the first straight lines are determined to be finished. The first reference point may be any point on the first line, and may be randomly generated or may be specified in advance.
Optionally, in the step 204, the Optimization function of the CATIA knowledge engineering module may be utilized, the distance between the first observation point and the first reference point on the first line is taken as an independent variable, the first distance is equal to the first safety distance as a constraint, and the position of the first observation point meeting the first distance equal to the first safety distance is automatically calculated and solved by using a simulated annealing algorithm, so that the manual section checking process is omitted, and the efficiency is greatly improved.
In step 205, all the first sharp points are fitted to obtain a fitted curve, which is the first curve.
In this embodiment, a plurality of first straight lines parallel to the X-axis direction are sequentially formed in the Y-axis direction in the normal plane at preset intervals from the hinge axis, then, for each first straight line, a first outer panel flange section and a front end fitting section with a tolerance are formed at a first observation point on the first straight line, then, an circumscribed circle of the first outer panel flange section is formed by taking the hinge axis as a circle center, first distances between the circumscribed circle and the front end fitting section are measured, first sharp points satisfying the first distances equal to the first safe distances on each first straight line are quickly and conveniently solved by changing positions of the first observation points on the first straight lines, and then, each first sharp point is fitted to obtain a first curve satisfying each point on the first straight line as a fitting section of the front end fitting and the vehicle door with a tolerance, so that the distance between the envelope of the section rotating around the hinge axis and the front end fitting section satisfies the first safe distances.
Referring to fig. 2, a schematic diagram of a solution process of the first curve is shown using a front door as an example, and the input condition in fig. 2 is a hinge axis.
As shown in fig. 2, a plane is made at any point on the hinge axis O, and a straight line a parallel to the X direction is made 10mm from the hinge axis-Y direction in the normal plane;
The method comprises the steps of (1) making an outer plate flanging section H without tolerance at an optional point A on a straight line a, making a fender section i according to the clearance definition of a parting line, and then making an outer plate flanging section H with tolerance according to the tolerance requirement;
Taking the hinge axis O as a circle center to serve as an circumscribed circle J of the flanging section H of the outer plate, and measuring the distance k between the circumscribed circle J and the fender section i;
The Optimization function of the CATIA knowledge engineering module is utilized, the distance between the point A and a first reference point on the straight line a is taken as an independent variable, the distance k is taken as a constraint, and the position of the point A meeting the first safety distance defined in the earlier stage and the distance k is automatically calculated and solved by using a simulated annealing algorithm;
Then sequentially making straight lines B, C, D, E … parallel to the X direction in a plane by taking 10mm as an increment, sequentially solving a point B, a point C, a point D and a point E … by the same method, and fitting all the points to form a fitting curve l serving as the first curve;
And stretching the fitting curve l along the hinge axis O, wherein the intersection line of the stretching curved surface m and the outer plate molding surface n is the rear boundary w of the parting line of the vehicle door, as shown in fig. 3.
Optionally, in an embodiment, the step of determining the first point on the second curve includes steps 401 to 402.
Step 401, a second outer plate flanging section with tolerance is made at two observation points on the second curve Ren Qudi, and a second distance between the second outer plate flanging section and the rotated hinge flanging section is measured;
And step 402, solving the second observation point with the second distance equal to the second safety distance as the second point by taking the distance between the second observation point and a second reference point on the second curve as an independent variable.
In the step 401, any point on the second curve is taken as a second observation point, an outer plate flanging section without tolerance is made through the second observation point, then a second outer plate flanging section with tolerance is made according to the tolerance requirement, and a second distance between the second outer plate flanging section and the hinge flanging section after rotation is measured; then, in step 402, the step 401 is repeatedly performed with the distance between the second observation point and the second reference point on the second curve as an argument, that is, by changing the position of the second observation point on the second curve, to solve the second observation point satisfying the second distance equal to the second safety distance, and the observation point is taken as the second point. The second reference point may be any point on the second curve, and may be randomly generated or may be specified in advance.
Optionally, in the step 402, the Optimization function of the CATIA knowledge engineering module is utilized, the distance between the second observation point and the second reference point on the second curve is taken as an independent variable, the second distance is equal to the second safety distance and is taken as a constraint, and the position of the second observation point with the second distance equal to the second safety distance is automatically calculated and solved by using a simulated annealing algorithm, so that the manual section checking process can be omitted, and the efficiency is greatly improved.
Referring to fig. 4, a schematic diagram of a solution process for the second cusp is shown. As shown in fig. 4, the hinge flange P is made a normal plane section of the hinge axis, and the hinge flange P is reversely rotated around the hinge axis by the hinge over-opening angle; an outer plate flanging section T without tolerance is made at an optional point R on the second curve q, the outer plate flanging section T with tolerance is made according to the tolerance requirement, and the distance u between the outer plate flanging section T and the hinge flanging section P after rotation is measured;
and (3) using an Optimization function of the CATIA knowledge engineering module, taking the distance between the point R and a second reference point on a second curve as an independent variable, taking the distance u as a constraint and using a simulated annealing algorithm to automatically calculate and solve the position of the point R meeting the second safety distance defined in the earlier stage, wherein the distance u is equal to the second safety distance. And translating the intersection line of the rotated hinge flanging surface P and the outer plate modeling surface n to a point R, wherein the line segment is the front boundary v of the vehicle door parting line.
In the method provided by the embodiment of the invention, the range of the parting line is defined according to the front boundary of the parting line of the vehicle door and the rear boundary of the parting line of the vehicle door, which are obtained in the previous step, and it is understood that the parting line of the vehicle door side needs to be in front of the rear boundary and behind the front boundary, as shown in fig. 5 in particular.
Optionally, in one implementation, the method provided by the embodiment of the present invention further includes step 106 after step 105 above:
and 106, determining that the vehicle door parting line does not meet the vehicle door opening requirement under the condition that the rear boundary is positioned in front of the front boundary.
In this embodiment, since the actual door side parting line needs to be before the rear boundary and after the front boundary, if the calculated range is reversed from the front to the rear boundary, it is indicated that the arranged hinge axis position and the current door molding surface cannot meet the door opening requirement, and thus it is necessary to prompt the rearrangement of the hinge axis and/or the door molding surface, and in the case that the rear boundary is located after the front boundary, it is determined that the currently arranged hinge axis position and the door molding surface meet the door opening requirement.
It should be noted that, for simplicity of description, the method embodiments are shown as a series of acts, but it should be understood by those skilled in the art that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required by the embodiments of the invention.
Example two
Referring to FIG. 6, a block diagram of a vehicle door stitch line range solving apparatus 600 is shown, which may specifically include:
An input module 601 for providing a hinge axis, a door outer panel molding surface, a tolerance, a first safe distance between a door and a front end fitting, a second safe distance between a door and a hinge, a theoretical opening angle and an over-opening angle of the hinge;
A first determining module 602 for making a normal plane of the hinge axis and fitting a first curve in the normal plane, the first curve satisfying a fitting section of the front end fitting and the door with a tolerance at each point thereon such that a distance between an envelope of the section of the door rotated about the hinge axis and the section of the front end fitting satisfies the first safety distance;
A stretching module 603 for stretching the first curve along a hinge axis and determining a first intersection line of the stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line;
A second determining module 604, configured to reversely rotate a hinge flanging surface with interference risk around a hinge axis to an over-opening angle, take any point of a second intersection line of the rotated hinge flanging surface and an outer panel molding surface as a hinge axis vertical surface, and intersect the hinge axis vertical surface with the outer panel molding surface to obtain a second curve, and determine a second sharp point on the second curve, where a distance between a door section with tolerance and the rotated hinge flanging surface at the second sharp point meets the second safety distance;
A translation module 605 for translating the second intersection line to the second sharp point, determining a front boundary of a door parting line;
A third determining module 606 is configured to determine a door parting line range according to the rear boundary and the front boundary.
Optionally, in the apparatus, the first determining module 602 includes:
A dividing unit for sequentially making a plurality of first straight lines parallel to the X-axis direction in the Y-axis direction in the normal plane at preset intervals from the hinge axis;
the first matching unit is used for taking a first observation point on each first straight line to make a first outer plate flanging section with tolerance, and making a front end fitting section according to the clearance definition of the parting line;
the measuring unit is used for taking the hinge axis as a circle center to serve as an circumscribed circle of the flanging section of the first outer plate and measuring a first distance between the circumscribed circle and the section of the front end fitting;
A first solving unit, configured to solve, with a distance between the first observation point and a first reference point on the first line as an argument, the first observation point satisfying the first distance being equal to the first safety distance, as the first point;
and the determining unit is used for fitting according to the first sharp points corresponding to the first straight lines and determining the first curve.
Optionally, in the apparatus, the second determining module 604 includes:
the second matching unit is used for making a second outer plate flanging section with tolerance on two observation points on the second curve Ren Qudi and measuring a second distance between the second outer plate flanging section and the rotated hinge flanging section;
And the second solving unit is used for solving the second observation point with the second distance equal to the second safety distance as the second point by taking the distance between the second observation point and the second reference point on the second curve as an independent variable.
Optionally, in the device, the first solving unit is specifically configured to use an Optimization function of the CATIA knowledge engineering module, use a distance between the first observation point and a first reference point on the first line as an independent variable, use the first distance equal to the first safety distance as a constraint, and automatically calculate and solve the first observation point meeting the first distance equal to the first safety distance by using a simulated annealing algorithm.
Optionally, in the device, the second solving unit is specifically configured to use an Optimization function of the CATIA knowledge engineering module, use a distance between the second observation point and a second reference point on the second curve as an independent variable, use the second distance equal to the second safety distance as a constraint, and automatically calculate and solve the second observation point with the second distance equal to the second safety distance by using a simulated annealing algorithm.
Optionally, the apparatus further comprises:
and the verification module is used for determining that the hinge axis and the door molding surface which are currently arranged do not meet the door opening requirement under the condition that the rear boundary is positioned in front of the front boundary after the door parting line range is determined according to the rear boundary and the front boundary.
The embodiment of the invention has the following advantages:
According to the hinge axis, the molding surface of the outer plate of the vehicle door, the tolerance, the first safety distance between the vehicle door and the front end fitting, the second safety distance between the vehicle door and the hinge, the theoretical opening angle and the over-opening angle of the hinge, the rear boundary of the parting line of the vehicle door and the front boundary of the parting line of the vehicle door are rapidly determined, the parting line range of the vehicle door is further determined, the calculation logic is optimized, and the problems that a large number of manual section checks are needed for designing the parting line of the vehicle door, the design period is long and the workload is huge are avoided.
For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments for relevant points.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
Optionally, the embodiment of the present application further provides an electronic device, including a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction implements each process of the method embodiment for solving the parting line range of the vehicle door when executed by the processor, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or an instruction, and when the program or the instruction is executed by a processor, the program or the instruction realizes each process of the solving method embodiment of the vehicle door parting line range, can achieve the same technical effect, and is not repeated here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the solving method embodiment of the vehicle door parting line range can be realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, the present invention is not directed to any particular programming language. It will be appreciated that the teachings of the present invention described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present invention.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some or all of the components in a file downloading device according to embodiments of the present invention may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present invention can also be implemented as an apparatus or device program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present invention may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
The method, the device, the electronic equipment and the readable storage medium for solving the parting line range of the vehicle door provided by the invention are described in detail, and specific examples are applied to the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. A method for solving a vehicle door parting line range, the method comprising:
Providing a hinge axis, a door outer panel molding surface, a tolerance, a first safety distance between a door and a front end fitting, a second safety distance between the door and the hinge, a theoretical opening angle and an over-opening angle of the hinge;
A normal plane of the hinge axis is made, and a first curve is fitted in the normal plane, wherein the first curve meets the matching section of the front end fitting and the vehicle door with tolerance at each point on the first curve, so that the distance between the envelope of the vehicle door section rotating around the hinge axis and the front end fitting section meets the first safety distance;
Stretching the first curve along a hinge axis, and determining a first intersection line of a stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line;
Reversely rotating the hinge flanging surface with interference risk to an over-opening angle around a hinge axis, taking any point of a second intersection line of the rotated hinge flanging surface and the outer plate molding surface as a hinge axis vertical surface, intersecting the hinge axis vertical surface with the vehicle door outer plate molding surface to obtain a second curve, and determining a second sharp point on the second curve, wherein the second sharp point is used for making a distance between a vehicle door section with tolerance and the rotated hinge flanging surface to meet the second safety distance;
Translating the second intersection line to the second sharp point, and determining a front boundary of a vehicle door parting line;
And determining the parting line range of the vehicle door according to the rear boundary and the front boundary.
2. The method of claim 1, wherein fitting the first curve in the normal plane comprises:
sequentially making a plurality of first straight lines parallel to the X-axis direction in the Y-axis direction in the normal plane at preset intervals from the hinge axis;
For each first straight line, taking a first observation point on the first straight line to form a first outer plate flanging section with tolerance, and forming a front end fitting section according to the clearance definition of the parting line;
Taking the axis of the hinge as the center of a circle to serve as an circumscribed circle of the flanging section of the first outer plate, and measuring a first distance between the circumscribed circle and the section of the front end fitting;
solving the first observation point which meets the first distance equal to the first safety distance by taking the distance between the first observation point and a first reference point on the first straight line as an independent variable, and taking the first observation point as a first point;
and fitting according to the first sharp points corresponding to the first straight lines, and determining the first curve.
3. The method of claim 1, wherein determining a second cusp on the second curve comprises:
Making a second outer plate flanging section with tolerance at two observation points on the second curve Ren Qudi, and measuring a second distance between the second outer plate flanging section and the rotated hinge flanging section;
And solving the second observation point with the second distance equal to the second safety distance as the second point by taking the distance between the second observation point and a second reference point on the second curve as an independent variable.
4. The method of claim 2, wherein solving for the first observation point that satisfies the first distance equal to the first safe distance with a first coordinate of the first observation point on the first line as an argument comprises:
And using an Optimization function of the CATIA knowledge engineering module, using the distance between the first observation point and the first reference point on the first straight line as an independent variable, using the first distance equal to the first safety distance as a constraint, and using a simulated annealing algorithm to automatically calculate and solve the first observation point meeting the first distance equal to the first safety distance.
5. A method according to claim 3, wherein solving for the second observation point at the second distance equal to the second safety distance with the distance between the second observation point and a second reference point on the second curve as an argument comprises:
And using an Optimization function of the CATIA knowledge engineering module, using the distance between the second observation point and a second reference point on the second curve as an independent variable, using the second distance equal to the second safety distance as a constraint, and using a simulated annealing algorithm to automatically calculate and solve the second observation point with the second distance equal to the second safety distance.
6. The method of claim 1, wherein after determining a door stitch line range based on the rear boundary and the front boundary, the method further comprises:
And in the case that the rear boundary is positioned before the front boundary, determining that the hinge axis and the outer door panel molding surface which are arranged currently do not meet the door opening requirement.
7. A method according to claim 3, wherein when the door is a front door, the front end fitting is a fender; when the door is a rear door, the front end fitting is a front door.
8. The method of claim 1, wherein the step of taking any one of the second intersecting lines of the rotated hinge flanging surface and the outer panel molding surface as the hinge axis vertical surface comprises:
Taking the midpoint of the second intersecting line of the rotated hinge flanging surface and the outer plate molding surface as a vertical plane of the hinge axis.
9. A vehicle door stitch line range solving apparatus, the apparatus comprising:
The input module is used for providing a hinge axis, a door outer plate molding surface, a tolerance, a first safety distance between the door and a front end fitting, a second safety distance between the door and the hinge, a theoretical opening angle and an over-opening angle of the hinge;
a first determining module for making a normal plane of the hinge axis and fitting a first curve in the normal plane, the first curve satisfying a fitting section of the front end fitting and the door with a tolerance at each point thereon such that a distance between an envelope of the section of the door rotated about the hinge axis and the section of the front end fitting satisfies the first safety distance;
A stretching module for stretching the first curve along a hinge axis and determining a first intersection line of the stretched curved surface of the first curve and the outer door panel molding surface as a rear boundary of a door parting line;
The second determining module is used for reversely rotating the hinge flanging surface with interference risk to an over-opening angle around a hinge axis, taking a midpoint of a second intersection line of the rotated hinge flanging surface and the outer plate molding surface as a hinge axis vertical surface, intersecting the hinge axis vertical surface with the vehicle door outer plate molding surface to obtain a second curve, and determining a second sharp point on the second curve, wherein the distance between a vehicle door section with tolerance at the second sharp point and the rotated hinge flanging surface meets the second safety distance;
The translation module is used for translating the second intersection line to the second sharp point and determining the front boundary of the vehicle door parting line;
and the third determining module is used for determining the parting line range of the vehicle door according to the rear boundary and the front boundary.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps in the method for solving the door split line range as defined in any one of claims 1 to 8.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3705768A1 (en) * | 1987-02-24 | 1988-09-01 | Bayerische Motoren Werke Ag | Hinge arrangement for a vehicle door |
| CN106184480A (en) * | 2016-07-24 | 2016-12-07 | 浙江零跑科技有限公司 | A kind of body hinge method for arranging |
| CN108058581A (en) * | 2017-12-18 | 2018-05-22 | 北斗航天汽车（北京）有限公司 | The check method of car door parting and research of door design method |
| CN111914343A (en) * | 2020-06-11 | 2020-11-10 | 沿锋智能消防设备(济宁)有限公司 | Method capable of accurately determining parting limit boundary line of automobile opening and closing part |
| CN112528398A (en) * | 2020-11-24 | 2021-03-19 | 宝能(西安)汽车研究院有限公司 | Arrangement method and arrangement system for vehicle door hinge axis |
| CN113051655A (en) * | 2019-12-26 | 2021-06-29 | 观致汽车有限公司 | Method for determining front and rear boundaries of vehicle door parting |
| CN113868756A (en) * | 2021-08-31 | 2021-12-31 | 东风汽车集团股份有限公司 | Method for determining position of hinge shaft of back door |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5182303B2 (en) * | 2009-03-03 | 2013-04-17 | 株式会社デンソー | Vehicle door opening control device |
| US9135730B2 (en) * | 2012-04-30 | 2015-09-15 | Siemens Product Lifecycle Management Software Inc. | Curve chain connections under surface, distance, and shape constraints |
-
2022
- 2022-06-01 CN CN202210617395.4A patent/CN115114720B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3705768A1 (en) * | 1987-02-24 | 1988-09-01 | Bayerische Motoren Werke Ag | Hinge arrangement for a vehicle door |
| CN106184480A (en) * | 2016-07-24 | 2016-12-07 | 浙江零跑科技有限公司 | A kind of body hinge method for arranging |
| CN108058581A (en) * | 2017-12-18 | 2018-05-22 | 北斗航天汽车（北京）有限公司 | The check method of car door parting and research of door design method |
| CN113051655A (en) * | 2019-12-26 | 2021-06-29 | 观致汽车有限公司 | Method for determining front and rear boundaries of vehicle door parting |
| CN111914343A (en) * | 2020-06-11 | 2020-11-10 | 沿锋智能消防设备(济宁)有限公司 | Method capable of accurately determining parting limit boundary line of automobile opening and closing part |
| CN112528398A (en) * | 2020-11-24 | 2021-03-19 | 宝能(西安)汽车研究院有限公司 | Arrangement method and arrangement system for vehicle door hinge axis |
| CN113868756A (en) * | 2021-08-31 | 2021-12-31 | 东风汽车集团股份有限公司 | Method for determining position of hinge shaft of back door |
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