CN112224309B - Method for calculating layout area of rotating shaft according to parting line and maximum opening degree of vehicle door - Google Patents
Method for calculating layout area of rotating shaft according to parting line and maximum opening degree of vehicle door Download PDFInfo
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- CN112224309B CN112224309B CN202011063465.3A CN202011063465A CN112224309B CN 112224309 B CN112224309 B CN 112224309B CN 202011063465 A CN202011063465 A CN 202011063465A CN 112224309 B CN112224309 B CN 112224309B
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- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
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Abstract
The invention discloses a method for calculating an arrangeable area of a rotating shaft according to a parting line and a maximum opening degree of a vehicle door. It comprises the following steps: calculating a configurable critical line of a rotating shaft according to a molding surface, a parting line, a maximum opening degree, a door seam width and a minimum distance between a required vehicle door and a front part of the parting line input by molding, wherein the region on one side of the configurable critical line of the rotating shaft in the direction outside a driving cab is a configurable region of the rotating shaft, and the configurable critical line of the rotating shaft and the configurable region of the rotating shaft on any one horizontal plane are calculated by the same method; and the intersection of the rotation axis arrangeable regions on any one horizontal plane is the final integral rotation axis arrangeable region. The invention solves the problem that the repeated workload of repeated adjustment in the arrangement of the rotating shaft is too large.
Description
Technical Field
The invention belongs to the technical field of automobile design, and particularly relates to a method for calculating an arrangeable area of a rotating shaft according to a parting line and the maximum opening degree of an automobile door.
Background
The existing invention patent with the publication number of CN108058581A provides a method for checking the seam of a vehicle door and a method for designing the vehicle door, and the seam line of the vehicle door is calculated by the determined rotating shaft and the maximum opening degree of the hinge of the vehicle door, so the application is limited. Because the door parting line is related to the build, the axis of rotation needs to be rearranged once the calculated parting line fails to match the build.
In the current design of the parting line of the vehicle door, a modeling designer often determines a primary parting line, then a structural engineer puts forward the optimization requirement of the parting line for modification according to the performance and the process condition, if the modeling feedback is not feasible, the position of the parting line needs to be determined by modifying the position of a rotating shaft and modifying a modeling surface, and the method has no systematic method and belongs to a trial and error method. The molding surface and the parting line originally belong to the work of a molding designer, and the current method needs a structural engineer and a molding engineer to synchronously cooperate and finish, so that the coordination work is difficult.
The molding surface and the parting line belong to a first-level boundary, whether the appearance of the automobile accords with aesthetic design or not is determined, the appearance can not be changed generally, once the molding surface is more modified, the workload of reexamination is very large, and in addition, the method belongs to trial and error design, the workload needs to be changed for many times, and the workload is increased exponentially.
The position of the rotating shaft determines the performance of the vehicle door, and the vehicle door has the optimal arrangement position, but once the parting line does not meet the appearance requirement of the vehicle, the vehicle door needs to be rearranged and repeatedly adjusted, and if the optimal vehicle door performance and the optimal vehicle appearance are simultaneously achieved under the condition of meeting the arrangement, the workload is larger, and the time consumption is longer.
Disclosure of Invention
The present invention is directed to solving the above-mentioned drawbacks of the prior art, and provides a method for estimating an arrangeable area of a rotating shaft according to a parting line and a maximum opening degree of a vehicle door.
The technical scheme adopted by the invention is as follows: a method of estimating an arrangeable region of a rotary shaft based on a parting line and a maximum opening degree of a door, comprising the steps of: calculating a configurable critical line of a rotating shaft according to a molding surface, a parting line, a maximum opening degree, a door seam width and a minimum distance between a required vehicle door and a front part of the parting line input by molding, wherein the region on one side of the configurable critical line of the rotating shaft in the direction outside a driving cab is a configurable region of the rotating shaft, and the configurable critical line of the rotating shaft and the configurable region of the rotating shaft on any one horizontal plane are calculated by the same method; and the intersection of the rotation axis arrangeable regions on any one horizontal plane is the final integral rotation axis arrangeable region.
The method specifically comprises the following steps:
(1) inputting a vehicle door molding surface and parting lines;
(2) inputting a maximum opening degree alpha (DEG), a door seam width b (mm), and a minimum distance c (mm) required by the door to a part at the front end of a parting line in the door closing process;
(3) the intersection line of the vehicle door molding surface and any horizontal plane is a vehicle door molding line, the vehicle door molding line deviates outwards by a distance c to form an interference identification line, a first connecting line is arranged between the front-end parting position and the rotating point, a second connecting line is arranged between a certain contact point on the interference identification line and the rotating point, when the first connecting line and the second connecting line are equal in length and the included angle is alpha, the straight line of the rotating point is a critical line which can be arranged on the rotating shaft on the horizontal plane, and the region on one side of the driving cab outside where the critical line can be arranged on the rotating shaft is a region where the rotating shaft can be arranged;
(4) calculating a plurality of rotatable shaft arrangeable critical lines and rotatable shaft arrangeable regions on any horizontal plane by using the same method;
(5) and the intersection of the rotary shaft arrangeable regions on any one horizontal plane is the final integral rotary shaft arrangeable region.
In the above step, any horizontal plane is any horizontal plane parallel to the horizontal plane.
Further, the smaller the gap between any two horizontal planes is, the more accurate the final result is; when the requirement on the accuracy of the result is not high, the gaps among all the horizontal planes can be increased, but the parts with large characteristic local changes of parting lines and vehicle door molding surfaces need to be calculated.
Furthermore, the parting line divides the vehicle door molding surface into a front end part and a vehicle door, the gap between the vehicle door and the front end part has a width, the two ends of the width b of the door gap are respectively a front end parting and a rear end parting, the front part of the front end parting is the front end part, and the rear part of the rear end parting is the vehicle door.
Further, the door molding line intersecting the door molding surface and the horizontal plane is offset outward by a distance c toward the outside of the cab for simulating an interference recognition line of the distance c between the door and other parts, which cannot be exceeded by the other parts in order to ensure the minimum distance c between the door and the other parts.
Further, if the door is at the maximum opening degree α, the front end seam of the front end part is just in contact with the outward offset distance c, which indicates that the minimum distance from the front end seam to the door is c at this time, and the door is in a critical state.
The invention directly calculates the arrangeable area of the rotating shaft according to the modeling surface, the parting line and the maximum opening degree of the vehicle door input by modeling, and then selects the optimal arrangement position of the rotating shaft in the arrangeable area, thereby solving the problem of too large repeated workload of repeated adjustment in the arrangement of the rotating shaft at one time.
Drawings
FIG. 1 is a schematic view of a door molding surface, parting line;
FIG. 2 is a schematic view of a horizontal cross section of a door molding surface, parting lines, door seam width, front end door seam, and rear end door seam;
FIG. 3 is a schematic view of the interference situation at the maximum opening of the door;
FIG. 4 is a cross-sectional view of the door and front end components at either level.
Wherein, 1-parting line, 2-vehicle door molding surface, 3-front end part, 4-front end parting line, 5-rear end parting line, 6-vehicle door and 7-interference part.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the door molding surface for molding input and the schematic illustration of the lines on its surface are generally provided with characteristic lines for aesthetic reasons, just because these protruding characteristic lines cause difficulties in the arrangement of the rotating shaft.
As shown in fig. 2, the parting line divides the door molding surface into a front end part and a door, the gap between the door and the front end part has a width in the actual door development, the two ends of the door gap width (b) are respectively a front end parting and a rear end parting, the front end part is in front of the front end parting, the door is behind the rear end parting, and the theoretical parting is generally located between the front end parting and the rear end parting.
If a certain rotating shaft arrangement meets the integral requirement, the rotating shaft arrangement can meet the requirement of rotating shaft arrangement on any horizontal plane. On the contrary, if a certain rotating shaft arrangement can meet the rotating shaft arrangement requirement on any one horizontal plane, the rotating shaft arrangement meets the integral requirement. Therefore, the critical lines and the regions where the rotating shafts of any horizontal plane can be arranged are calculated, and the intersection of the regions is the region which can meet the overall requirement of the arrangement of the rotating shafts.
As shown in fig. 3, among the movement interferences of the door, the most easily interfered with is when the door is at the maximum opening degree (α), the door interferes with the front end slit.
Fig. 4 is a schematic diagram of the arrangement of critical lines and regions of the estimated rotation axis on any one horizontal plane.
The front part of the front end seam is a front part, the back part of the back end seam is a vehicle door, and the distance between the front end seam and the back end seam is b (mm).
Because the actual production state deviates from the design state, in order to ensure that the door movement does not interfere, a minimum distance c (mm) between the door and other parts is usually designed, and a design margin is left.
As shown in fig. 4, the door profile line intersecting the door profile and the horizontal plane is offset outwardly to the outside of the driver's cabin by a distance c, which is used to simulate an interference identification line for the distance c (mm) of the door from other parts, which other parts must not exceed in order to ensure a minimum distance c (mm) of the door from other parts. If the vehicle door is in the maximum opening degree (alpha), the front end seam of the front end part is just in contact with the outward deviation distance c, which shows that the minimum distance from the front end seam to the vehicle door is c (mm) at the moment, and the state is a critical state.
Assuming that the vehicle door is in a critical state at present and the vehicle door is in a maximum opening degree (alpha), the front end seam of the front end part is just contacted with a certain point on the outward deviation distance c. The position of the rotating shaft can be calculated through the front end parting position, the position of a certain contact point on the outward deviation distance c and the maximum opening degree (alpha) (the connecting line of the front end parting position and the rotating point and the connecting line of the certain contact point on the straight line (namely the interference identification line) obtained by the outward deviation distance c and the rotating point are equal in length, and the included angle is alpha).
The minimum distance between the front end seam and the vehicle door is c (mm), which indicates that the position of the rotating shaft is a critical position for ensuring that the seam distance between the vehicle door and the front end is greater than c. Each point on the outward deviation distance c is likely to contact with the front end seam, each point corresponds to a critical position of the rotating shaft, and the trajectory lines described by the critical positions of the rotating shaft are the arrangeable critical lines of the rotating shaft.
In fig. 4, there are 2 isosceles triangles (the isosceles triangle is used to simulate the rotation of the vehicle door, the top angle is the position of the rotating shaft, one base angle is the contact point between the outward offset distance c and the front end seam when the maximum opening is achieved, the other base angle is the position of the point on the outward offset distance c when the vehicle door is closed), one base angle of the isosceles triangle is fixed on the front end seam, the other base angle slides on the straight line (i.e. the interference identification line) obtained by the offset c, the track line of the top point of the isosceles triangle is the critical line which can be arranged on the rotating shaft, and the outside of the critical line in the direction of the cab is the arrangeable area.
Finally, the rotation axis arrangeable regions of any horizontal plane are combined together, and the intersection of the rotation axis arrangeable regions is the final rotation axis arrangeable region.
Those not described in detail in this specification are within the skill of the art.
Claims (6)
1. A method of estimating an arrangeable region of a rotary shaft based on a parting line and a maximum opening degree of a door, characterized in that: the method comprises the following steps: calculating a configurable critical line of a rotating shaft according to a molding surface, a parting line, a maximum opening degree, a door seam width and a minimum distance between a required vehicle door and a front part of the parting line input by molding, wherein the region on one side of the configurable critical line of the rotating shaft in the direction outside a driving cab is a configurable region of the rotating shaft, and the configurable critical line of the rotating shaft and the configurable region of the rotating shaft on any one horizontal plane are calculated by the same method; the intersection of the rotary shaft arrangeable regions on any one horizontal plane is a final integral rotary shaft arrangeable region;
the method specifically comprises the following steps:
(1) inputting a vehicle door molding surface and parting lines;
(2) inputting a maximum opening degree alpha, a door gap width b and a minimum distance c of a required vehicle door from a part at the front end of a parting line in a door closing process, wherein the unit of alpha: unit of degree, b: mm, unit of c: mm;
(3) the intersection line of the vehicle door molding surface and any horizontal plane is a vehicle door molding line, the vehicle door molding line deviates outwards by a distance c to form an interference identification line, a first connecting line is arranged between the front-end parting position and the rotating point, a second connecting line is arranged between a certain contact point on the interference identification line and the rotating point, when the first connecting line and the second connecting line are equal in length and the included angle is alpha, the straight line of the rotating point is a critical line which can be arranged on the rotating shaft on the horizontal plane, and the region on one side of the driving cab outside where the critical line can be arranged on the rotating shaft is a region where the rotating shaft can be arranged;
(4) calculating a plurality of rotatable shaft arrangeable critical lines and rotatable shaft arrangeable regions on any horizontal plane by using the same method;
(5) and the intersection of the rotary shaft arrangeable regions on any one horizontal plane is the final integral rotary shaft arrangeable region.
2. The method of estimating the rotation axis arrangeable region according to the door parting line and the maximum opening degree of the vehicle as set forth in claim 1, wherein: in the above step, any horizontal plane is any horizontal plane parallel to the horizontal plane.
3. The method of estimating the rotation axis arrangeable region according to the door parting line and the maximum opening degree of the vehicle as set forth in claim 2, wherein: the smaller the gap between any two horizontal planes is, the more accurate the final result is; when the requirement on the accuracy of the result is not high, the gaps among all the horizontal planes can be increased, but the parts with large characteristic local changes of parting lines and vehicle door molding surfaces need to be calculated.
4. The method of estimating the rotation axis arrangeable region according to the door parting line and the maximum opening degree of the vehicle as set forth in claim 1, wherein: the parting line divides the vehicle door molding surface into a front end part and a vehicle door, the gap between the vehicle door and the front end part has a width, the two ends of the width b of the door gap are respectively a front end parting and a rear end parting, the front part of the front end parting is the front end part, and the rear part of the rear end parting is the vehicle door.
5. The method of estimating the rotation axis arrangeable region according to the door parting line and the maximum opening degree of the vehicle as set forth in claim 1, wherein: and the vehicle door molding line intersecting the vehicle door molding surface and the horizontal plane deviates a distance c outwards from the driving cab, and is used for simulating an interference identification line of the distance c between the vehicle door and other parts, and the other parts cannot exceed the line in order to ensure the minimum distance c between the vehicle door and other parts.
6. The method of estimating the rotation axis arrangeable region according to the door parting line and the maximum opening degree of the vehicle as set forth in claim 5, wherein: if the vehicle door is in the maximum opening degree alpha, the front end seam of the front end part is just in contact with the outward deviation distance c, which shows that the minimum distance from the front end seam to the vehicle door is c at the moment, and the vehicle door is in a critical state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063465.3A CN112224309B (en) | 2020-09-30 | 2020-09-30 | Method for calculating layout area of rotating shaft according to parting line and maximum opening degree of vehicle door |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011063465.3A CN112224309B (en) | 2020-09-30 | 2020-09-30 | Method for calculating layout area of rotating shaft according to parting line and maximum opening degree of vehicle door |
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| CN112224309A CN112224309A (en) | 2021-01-15 |
| CN112224309B true CN112224309B (en) | 2021-10-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007156784A (en) * | 2005-12-05 | 2007-06-21 | Toyota Auto Body Co Ltd | Design support device |
| CN105045972A (en) * | 2015-07-01 | 2015-11-11 | 上海大众汽车有限公司 | Data processing method for vehicle door gap components |
| 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 |
-
2020
- 2020-09-30 CN CN202011063465.3A patent/CN112224309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007156784A (en) * | 2005-12-05 | 2007-06-21 | Toyota Auto Body Co Ltd | Design support device |
| CN105045972A (en) * | 2015-07-01 | 2015-11-11 | 上海大众汽车有限公司 | Data processing method for vehicle door gap components |
| 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 |
Non-Patent Citations (3)
| Title |
|---|
| 某电动车前门铰链结构布置设计与强度分析;万长东等;《机械研究与应用》;20200628;第三十三卷(第3期);第75-77、80页 * |
| 车门铰链轴线布置方法;刘漪青;《汽车与配件》;20180220(第5期);第75-77页 * |
| 轿车车门铰链设计研究;邓建国;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20191115(第11期);第C035-175页 * |
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