CN115795743B - Steady calculation method for standard component arrangement region - Google Patents
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- CN115795743B CN115795743B CN202310062790.5A CN202310062790A CN115795743B CN 115795743 B CN115795743 B CN 115795743B CN 202310062790 A CN202310062790 A CN 202310062790A CN 115795743 B CN115795743 B CN 115795743B
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Abstract
The invention provides a robust calculation method for a standard part arrangement region, which relates to the technical field of hardware progressive die design and comprises the following steps: s1, giving an arrangement target and a standard part, and calculating a Z coordinate of an end part plane of the standard part; s2, respectively calculating an arrangement target top area LTTS, an arrangement target bottom area LTBS or a standard part end area SPES according to different relative position relations between the standard part and the arrangement target; and S3, calculating the standard component arrangement area through LTTS, LTBS and SPES. The method is used for solving the main content of structural design in the design of the continuous die, namely the problem of standard part arrangement, and after the standard part arrangement area is calculated by a steady calculation method of the standard part arrangement area, the standard parts can be automatically arranged, so that the time and the labor are saved.
Description
Technical Field
The invention relates to the technical field of hardware continuous die design, in particular to a robust calculation method for a standard component arrangement region.
Background
The design of a continuous die is a complex and highly specialized process that involves two parts: process design and structural design. The standard component arrangement is the main content of the structural design, and the standard component arrangement is divided into two types: and arranging the template mould frame standard parts and arranging the punch insert standard parts. In a set of medium-complex hardware continuous die, the number of the standard parts reaches hundreds, a designer needs to calculate the positioning point of each standard part, then the standard part is assembled to each positioning point, and finally holes are formed in the corresponding plate or punch insert.
Chinese patent CN103611823A "universal hardware continuous module" discloses a universal hardware continuous module, wherein standard components are arranged and stamped through a detachable structure provided with pin blocking blocks, however, this method needs to be calculated in a large amount, and each standard component is assembled after obtaining the arrangement area of the standard component, and the efficiency is very low.
Disclosure of Invention
In view of this, the invention provides a robust calculation method for a standard component arrangement region, which is used for solving the problem that the efficiency of a standard component arrangement region acquisition method in the current continuous mold design is not high.
The technical scheme of the invention is realized as follows: the invention provides a robust calculation method for a standard component arrangement region, which comprises the following steps:
s1, giving an arrangement target and a standard component, and calculating a Z coordinate of an end part plane of the standard component;
s2, respectively calculating an arrangement target top area LTTS, an arrangement target bottom area LTBS or a standard part end area SPES according to different relative position relations between the standard part and the arrangement target;
and S3, calculating the standard component arrangement area through LTTS, LTBS and SPES.
On the basis of the above technical solution, preferably, the step S2 specifically includes the following steps:
s201, when the installation direction of the standard component is a negative Z direction and the standard component is intersected with the upper surface of the arrangement target, calculating LTTS and SPES of the standard component;
s202, when the installation method of the standard component is in the negative Z direction and the standard component intersects with the upper surface and the lower surface of the arrangement target, calculating the LTTS and the LTBS of the standard component;
s203, when the mounting method of the standard component is the positive Z direction and the standard component intersects with the lower surface of the arrangement target, calculating the LTBS and the SPES of the standard component.
On the basis of the above technical solution, preferably, step S3 specifically includes the following steps:
s301, when the installation direction of the standard component is the negative Z direction and the standard component is intersected with the upper surface of the arrangement target, taking the intersection of the LTTS and the SPES to obtain the arrangement area of the standard component;
s302, when the standard component is installed in the negative Z direction and the standard component is intersected with the upper surface and the lower surface of the arrangement target, taking the intersection of the LTTS and the LTBS to obtain an arrangement area of the standard component;
and S303, when the installation method of the standard component is in the positive Z direction, and the standard component is intersected with the lower surface of the arrangement target, taking the intersection of the LTBS and the SPES to obtain the arrangement area of the standard component.
On the basis of the above technical solution, preferably, step S2 specifically includes:
LTTS is the difference between the upper surface outer contour region, which is the inner region of the upper surface outer contour, and the inner contour region, which is the inner region of the upper surface inner contour, of the arrangement target.
On the basis of the above technical solution, preferably, step S2 specifically includes:
LTBS is a set of differences between the target subsurface outer contour region, which is an interior region of the subsurface outer contour, and the subsurface inner contour region, which is an interior region of the subsurface inner contour.
On the basis of the above technical solution, preferably, step S2 specifically includes:
the SPES calculation procedure is as follows,
s401, triangular mesh subdivision is carried out on the geometric surface of the arrangement target to obtain a plurality of triangles
；
S402, judgingT i The spatial position relation with the end plane of the standard component;
s403, whenT i Does not intersect with the end plane of the standard component and takes the end plane of the standard component as a reference,T i on the same side as the standard component, defineQ i Is equal toT i (ii) a When in useT i Does not intersect with the end plane of the standard part and takes the end plane of the standard part as a reference,T i when opposite to the standard, ignoreT i (ii) a When the temperature is higher than the set temperatureT i Intersecting the end plane of the standard, the end plane willT i Dividing the standard part into two polygons, and taking the polygon opposite to the standard part asQ i ；
S404, mixing eachQ i Projected onto the end plane to obtainP i All will beP i The sum yields the SPES.
Compared with the prior art, the robust calculation method for the standard component arrangement region has the following beneficial effects:
classifying the standard component and the arrangement target according to the relative position relation, and solving by a mathematical method to accurately and efficiently obtain the arrangement area of the standard component;
the problem of partial overlapping of geometric faces in the process of using a geometric method for calculation in the traditional method is solved by using a mathematical method for calculation, and the arrangement area is calculated by using LTTS, LTBS and SPES, so that the accuracy and the speed of solving are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart of a robust calculation method for a standard layout area according to the present invention;
FIG. 2 is a flowchart of calculation of layout areas under different conditions of a robust calculation method for standard layout areas according to the present invention;
FIG. 3 is a diagram illustrating an exemplary calculation of an LTTS of an arrangement target top area in a robust calculation method for standard element arrangement areas according to the present invention;
FIG. 4 is a flowchart of the SPES calculation for the end region of the standard in a robust calculation method for the standard layout region according to the present invention;
FIG. 5 is a graph illustrating an exemplary SPES calculation for the end region of the standard for a robust method of calculating the layout area of the standard according to the present invention.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.
Examples
A robust calculation method for standard component arrangement areas is provided, as shown in FIG. 1, and includes the following steps:
s1, giving an arrangement target and a standard part, and calculating a Z coordinate of an end part plane of the standard part;
s2, respectively calculating LTTS (arrangement target top area), LTBS (arrangement target bottom area) or SPES (standard component end area) according to different relative position relations between the standard component and the arrangement target;
and S3, calculating the standard arrangement area through LTTS, LTBS and SPES.
The design of continuous molds is a complex and highly specialized process that requires a high level of knowledge from the mold designer and can only be accomplished through years of practical experience. The design of the progressive die comprises two parts: process design and structural design. The design of die carrier, drift go into son design and standard component and arrange and be structural design's main content, wherein the standard component is arranged and is divided into two types: and arranging the template mould frame standard parts and arranging the punch insert standard parts.
The geometric method is a common method for solving the arrangement area at present, in the solving process of the geometric method, a large amount of intersection operation of geometric surfaces and geometric surfaces is needed, when the two geometric surfaces are in a partially overlapped critical state, errors are easy to occur in the solving process, and the results of two times of solving are inconsistent, so that the automatic arrangement of standard parts fails or results are wrong.
The present invention uses a mathematical method to calculate the arrangement region of the standard parts by calculating the top region LTTS of the arrangement target, the bottom region LTBS of the arrangement target, and the end region SPES of the standard parts when the standard parts and the arrangement target are in different relative positional relationships.
The step S1 specifically includes:
the solved standard component tip plane Z coordinate is the straight line (indicated by the dashed line in the later figures) on which the tip plane is located when viewed in front elevation.
The step S2 specifically includes the following steps:
s201, when the installation direction of the standard component is a negative Z direction and the standard component is intersected with the upper surface of the arrangement target, calculating LTTS and SPES of the standard component;
s202, when the installation method of the standard component is in the negative Z direction and the standard component intersects with the upper surface and the lower surface of the arrangement target, calculating the LTTS and the LTBS of the standard component;
s203, when the mounting method of the standard component is the positive Z direction and the standard component intersects with the lower surface of the arrangement target, calculating the LTBS and the SPES of the standard component.
When the installation direction of the standard component is the negative Z direction and the standard component is intersected with the upper surface of the arrangement target, because the standard component is intersected with the upper surface of the arrangement target at the moment, the inner region LTTS of the upper surface of the arrangement target needs to be calculated, but the standard component is not intersected with the lower surface of the arrangement target, the end part of the standard component is positioned in the arrangement target, and the two-dimensional region SPES occupied by the arrangement target in the end part plane of the standard component also needs to be calculated;
when the installation direction of the standard component is the negative Z direction and the standard component intersects with the upper surface and the lower surface of the arrangement target, because the standard component intersects with the upper surface and the lower surface of the arrangement target at the moment, the inner area LTTS of the upper surface of the arrangement target and the inner area LTBS of the lower surface of the arrangement target need to be calculated, and the end part of the standard component is positioned outside the arrangement target, so the two-dimensional area SPES occupied by the arrangement target in the plane of the end part of the standard component does not need to be calculated;
when the standard component is installed in the positive Z direction and the standard component intersects with the lower surface of the arrangement target, so that the inner region LTBS of the lower surface of the arrangement target needs to be calculated, while the standard component does not intersect with the upper surface of the arrangement target, and the end of the standard component is located inside the arrangement target, so that the two-dimensional region SPES occupied by the arrangement target in the end plane of the standard component also needs to be calculated.
The step S3 specifically includes the following steps:
s301, when the installation direction of the standard component is the negative Z direction and the standard component is intersected with the upper surface of the arrangement target, taking the intersection of the LTTS and the SPES to obtain the arrangement area of the standard component;
s302, when the installation method of the standard component is in the negative Z direction, and the standard component is intersected with the upper surface and the lower surface of the arrangement target, taking the intersection of the LTTS and the LTBS to obtain the arrangement area of the standard component;
and S303, when the installation method of the standard component is in the positive Z direction, and the standard component is intersected with the lower surface of the arrangement target, taking the intersection of the LTBS and the SPES to obtain the arrangement area of the standard component.
And (3) mathematically taking the intersection of the LTTS, the LTBS and the SPES to obtain the arrangement region of the standard component.
The step S2 specifically includes:
LTTS is arranging a difference set of target upper surface outer contour regions, which are inner regions of the upper surface outer contour, and upper surface inner contour regions, which are inner regions of the upper surface inner contour.
LTBS is a set of differences between the target subsurface outer contour region, which is an interior region of the subsurface outer contour, and the subsurface inner contour region, which is an interior region of the subsurface inner contour.
The SPES calculation procedure is as follows,
s401, triangular mesh subdivision is carried out on the geometric surface of the arrangement target to obtain a plurality of triangles
；
S402, judgingT i The spatial position relation with the end plane of the standard component;
s403, whenT i Does not intersect with the end plane of the standard component and takes the end plane of the standard component as a reference,T i on the same side as the standard component, defineQ i Is equal toT i (ii) a When in useT i Does not intersect with the end plane of the standard part and takes the end plane of the standard part as a reference,T i when opposite to the standard, ignoreT i (ii) a When in useT i Intersecting the end plane of the standard, the end plane willT i Dividing the standard part into two polygons, and taking the polygon opposite to the standard part asQ i ；
S404, mixing eachQ i Projected onto the end plane to obtain correspondenceP i All will beP i The sum yields the SPES.
The template frame or punch insert required to be subjected to standard component arrangement is called an arrangement target, and according to the relative position relationship between the standard component and the arrangement target, the arrangement area of one arrangement target is calculated as shown in fig. 2, and the following three conditions exist: (1) The standard member is mounted in the negative Z direction and intersects with the upper surface of the arrangement target, where the arrangement region is the intersection of the top region (LTTS) of the arrangement target and the end region (SPES) of the standard member, as shown in fig. 2 (a), LTTS is the inner region of the upper surface of the arrangement target, and SPES is the two-dimensional region occupied by the arrangement target in the plane of the end of the standard member; (2) The standard component mounting method is in the negative Z direction, and the standard component intersects both the upper and lower surfaces of the arrangement target, and at this time, the arrangement area is the intersection of LTTS and the bottom area (LTBS) of the arrangement target, as shown in fig. 2 (b), LTBS is the inner area of the upper surface of the arrangement target; (3) The standard mounting method is the positive Z direction, and the standard intersects with the lower surface of the arrangement target, where the arrangement region is the intersection of the SPES and LTBS, as shown in fig. 2 (c). In the figure, A is LTTS, B is SPES, C is LTBS, D is a standard component, E is an arrangement target, F is a counter bore, G is a blind bore, and the arrangement region figure is finally obtained, as shown in (a) of figure 2, the arrangement region is obtained by taking the intersection of A and B; in fig. 2 (b), the intersection of a and C is taken to obtain an arrangement region; in fig. 2, (C), intersection of B and C yields an arrangement region.
At this point, the LTTS, LTBS and SPES need to be solved.
LTTS is the difference between the upper surface outer contour region, which is the inner region of the upper surface outer contour, and the inner contour region, which is the inner region of the upper surface inner contour, of the arrangement target. The calculation process is shown in fig. 3, where a is the outer contour of the upper surface of the arrangement target, and b is the inner contour of the upper surface of the arrangement target, so as to obtain an outer contour region (the left rectangular region in fig. 3) and an inner contour region (the right circular region in fig. 3), and the difference between the two regions is made, so as to obtain the final LTTS (the bottom graph in fig. 3), and a rectangular graph with a circular region missing in the middle is obtained.
LTBS is the difference between the lower surface outer contour region, which is the inner region of the lower surface outer contour, and the lower surface inner contour region, which is the inner region of the lower surface inner contour, of the arrangement target. The calculation process is similar to LTTS and will not be described herein.
SPES is the standard end region and the calculation process is shown in FIG. 4 and includes the following steps:
s401, triangular mesh subdivision is carried out on the geometric surface of the arrangement target to obtain a plurality of triangles
；
S402, judgingT i The spatial position relation with the end plane of the standard component;
s403, whenT i Does not intersect with the end plane of the standard part and takes the end plane of the standard part as a reference,T i definition on the same side as the standardQ i Is equal toT i (ii) a When in useT i Does not intersect with the end plane of the standard part and takes the end plane of the standard part as a reference,T i when opposite to the standard, ignoreT i (ii) a When in useT i Intersecting the end plane of the standard, the end plane willT i Dividing the standard part into two polygons, and taking the polygon opposite to the standard part asQ i ；
S404, mixing eachQ i Projected onto the end plane to obtain correspondenceP i All will beP i The sum yields the SPES.
Taking fig. 2 (c) as an example, that is, when the standard component mounting method is the positive Z direction and the standard component intersects with the lower surface of the arrangement target, the calculation process is as shown in fig. 5:
step 1: calculating a Z coordinate of the end part plane of the standard part, namely the position of a horizontal virtual line in the figure;
step 2: triangularizing the geometric surface of the arrangement target;
and step 3: obtaining all polygons at the opposite sides of the standard component according to the relative position relation between the triangles and the end plane;
and 4, step 4: projecting all the polygons to the end plane of the standard part to obtain projected polygons;
and 5: the final SPES is obtained by summing all the projected polygons.
It is to be noted that steps 1, 2 and 3 are shown in front view and steps 4 and 5 are shown in top view in fig. 5.
The intersection of the calculated SPES and LTBS yields the final standard layout area.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A robust calculation method for a standard component arrangement region is characterized by comprising the following steps:
s1, giving an arrangement target and a standard part, and calculating a Z coordinate of an end part plane of the standard part;
s2, respectively calculating an arrangement target top area LTTS, an arrangement target bottom area LTBS or a standard part end area SPES according to different relative position relations between the standard part and the arrangement target;
s201, when the installation direction of the standard component is a negative Z direction and the standard component is intersected with the upper surface of the arrangement target, calculating LTTS and SPES of the standard component;
s202, when the installation method of the standard component is in the negative Z direction and the standard component intersects with the upper surface and the lower surface of the arrangement target, calculating the LTTS and the LTBS of the standard component;
s203, when the mounting method of the standard component is in the positive Z direction and the standard component is intersected with the lower surface of the arrangement target, calculating the LTBS and the SPES of the standard component;
the SPES calculation procedure is as follows,
performing triangular mesh subdivision on the geometric surface of the arrangement target to obtain a plurality of triangles
；
Judging the spatial position relation between Ti and the end plane of the standard part;
when Ti does not intersect with the end plane of the standard part and is on the same side as the standard part by taking the end plane of the standard part as a reference, qi is defined to be equal to Ti; when Ti does not intersect with the end plane of the standard part and is opposite to the standard part by taking the end plane of the standard part as a reference, the Ti is ignored; when the Ti is intersected with the end plane of the standard part, the end plane divides the Ti into two polygons, and the polygon opposite to the standard part is taken as Qi;
projecting each Qi to an end plane to obtain a corresponding Pi, and summing all the Pi to obtain a SPES;
and S3, calculating the standard component arrangement area through LTTS, LTBS and SPES.
2. The robust calculation method for standard component arrangement region according to claim 1, wherein the step S3 specifically comprises the following steps:
s301, when the installation direction of the standard component is the negative Z direction and the standard component is intersected with the upper surface of the arrangement target, taking the intersection of the LTTS and the SPES to obtain an arrangement area of the standard component;
s302, when the standard component is installed in the negative Z direction and the standard component is intersected with the upper surface and the lower surface of the arrangement target, taking the intersection of the LTTS and the LTBS to obtain an arrangement area of the standard component;
and S303, when the installation method of the standard component is in the positive Z direction, and the standard component is intersected with the lower surface of the arrangement target, taking the intersection of the LTBS and the SPES to obtain the arrangement area of the standard component.
3. The robust calculation method for standard component arrangement region according to claim 1, wherein the step S2 specifically comprises:
LTTS is arranging a difference set of target upper surface outer contour regions, which are inner regions of the upper surface outer contour, and upper surface inner contour regions, which are inner regions of the upper surface inner contour.
4. The robust calculation method for standard component arrangement region according to claim 1, wherein the step S2 specifically comprises:
LTBS is the difference between the lower surface outer contour region, which is the inner region of the lower surface outer contour, and the lower surface inner contour region, which is the inner region of the lower surface inner contour, of the arrangement target.
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| CN109716335A (en) * | 2016-07-14 | 2019-05-03 | 工业智慧有限责任公司 | Shape the springback compensation in sheet metal component manufacture |
| CN110826252A (en) * | 2019-11-26 | 2020-02-21 | 武汉理工大学 | Enveloping mold design method for improving space enveloping forming precision under linear track |
| CN115544778A (en) * | 2022-10-17 | 2022-12-30 | 珠海格力精密模具有限公司 | Mold generation method and device, electronic device and storage medium |
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| US6901356B1 (en) * | 1998-03-20 | 2005-05-31 | Fujitsu Limited | Simulation apparatus, simulation method and computer-readable recording medium having simulation program recorded thereon as well as designing supporting apparatus |
| JP2015191313A (en) * | 2014-03-27 | 2015-11-02 | 本田技研工業株式会社 | Draw model creation method and draw model creation system |
| CN109716335A (en) * | 2016-07-14 | 2019-05-03 | 工业智慧有限责任公司 | Shape the springback compensation in sheet metal component manufacture |
| CN110826252A (en) * | 2019-11-26 | 2020-02-21 | 武汉理工大学 | Enveloping mold design method for improving space enveloping forming precision under linear track |
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