CN114626164A - Method for automatically checking whether stickers exceed sticking surfaces in three-dimensional drawing - Google Patents
Method for automatically checking whether stickers exceed sticking surfaces in three-dimensional drawing Download PDFInfo
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Abstract
The invention provides a method for automatically checking whether a pasting object exceeds a pasting surface in a three-dimensional drawing, which comprises the following steps: s1: an engineer completes product design by using three-dimensional design software; s2: an engineer opens an automatic examination tool to examine the three-dimensional drawing of the product; s3: the automatic examination tool automatically identifies all stickers, finds out and highlights the stickers beyond the sticking surface; s4: the engineer modifies the highlighted position of the sticker; s5: after the engineer finishes modification, submitting the three-dimensional drawing to a reviewer; s6: the examiner opens an automatic examination tool to examine the three-dimensional drawing of the product; s7: and (4) submitting the three-dimensional drawing to a production line through a reviewer, returning the three-dimensional drawing to an engineer by a question reviewer, and repeating the steps from S2 to S7 until the three-dimensional drawing is in compliance. Each specification of the invention has an automatic examination tool to complete quickly and automatically, thus effectively saving labor cost; the method has the advantages of no missing check, high accuracy and capability of improving the modification efficiency.
Description
Technical Field
The invention relates to the field of computer science, in particular to a method for automatically checking whether stickers in a three-dimensional drawing exceed a sticking surface, which is suitable for controlling the design quality of a digital model product.
Background
In the product design stage, if the designed product contains stickers, such as labels which need to be pasted on the surface of a case to play a role in prompting, and then, if the stickers need to be pasted on an insulating film on the surface of an electric box with a potential leakage hazard, the stickers need to be pasted inside a plane during design and cannot exceed the plane edge, otherwise, after a factory produces the product according to a designed three-dimensional drawing, the exceeding parts are easy to wear and crack, and even the whole stickers fall off in serious cases, so that the stickers lose the function of the stickers, and the product quality is indirectly reduced.
Therefore, in order to avoid the situation, after the engineer finishes designing and before the factory actually puts into production, the enterprise can check the three-dimensional drawing submitted by the engineer, check whether stickers in the product exceed the sticking plane of the product, and return to the engineer for modification if stickers in the product exceed the sticking plane of the product. The current examination mode mainly has the following problems: 1. manual inspection requires labor costs;
2. when manual inspection is carried out, if the products are complex, the process of finding out each sticker one by one is time-consuming, and the inspection efficiency is low;
3. when manual inspection is carried out, if the product is complex and the number of stickers is large, the condition of missed inspection exists, and the inspection quality is not high;
4. when the product is manually checked, if the product is complex and the number of stickers is large, the checked stickers can be checked again, and time is wasted;
5. manual inspection usually adopts visual observation and utilizes the measurement function provided by three-dimensional design software for inspection, and the inspection speed and the quality are low;
6. after the examiner finishes the examination, the part names corresponding to a plurality of stickers may be the same, but only part of stickers do not meet the requirements, and when the examiner informs the engineer of the non-compliant stickers, the engineer cannot easily and intuitively know which stickers need to be modified in position.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a method for automatically checking whether a pasting object exceeds a pasting surface in a three-dimensional drawing.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for automatically checking whether a sticker exceeds a sticking surface in a three-dimensional drawing comprises the following steps:
s1: an engineer completes product design by using three-dimensional design software;
s2: an engineer opens an automatic examination tool to examine the three-dimensional drawing of the product;
the automatic examination tool is connected with the three-dimensional design software through an interface to obtain the data of the three-dimensional drawing of the product;
s3: the automatic examination tool automatically identifies all stickers, finds out and highlights the stickers exceeding the sticking surface;
s3 includes:
s31: identifying a sticker in a three-dimensional drawing of a product;
the sticker is a standard part, a drawing number with a fixed format is arranged in an enterprise or a parameter is set in a parameter list of the three-dimensional model to indicate the type of the part; the figure number is the name of a three-dimensional model of the part;
s32: calculating whether the stickers beyond the sticking plane of the stickers exist in the recognized stickers by a ray method;
the ray method is to lead out a horizontal ray from a point, observe the number of intersection points of the ray and the polygon, if the number of the intersection points is an odd number, the point is in the polygon, and if the number of the intersection points is an even number, the point is out of the polygon;
s33: highlighting the stickers exceeding the sticking plane of the stickers in the three-dimensional drawing;
transmitting the bom list paths of the stickers exceeding the sticking plane of the three-dimensional design software through an interface of the three-dimensional design software, and highlighting and displaying the bom list paths in the three-dimensional drawing of the product;
s4: the engineer modifies the highlighted position of the sticker;
s5: after the engineer finishes modification, submitting the three-dimensional drawing to a reviewer;
s6: the examiner opens an automatic examination tool to examine the three-dimensional drawing of the product;
s7: and (4) submitting the three-dimensional drawing to a production line through a reviewer, returning the three-dimensional drawing to an engineer by a question reviewer, and repeating the steps from S2 to S7 until the three-dimensional drawing is in compliance.
Preferably, the specific steps of S31 are: the automatic examination tool firstly obtains the picture numbers and parameter lists of all parts under the whole product through an interface of three-dimensional design software, and then compares whether the picture number of each part accords with the picture number naming format of a certain sticker, if so, the part is the sticker; if the part type is not matched with the part type, judging whether the parameter indicating the part type in the parameter list is the type name of a certain sticker or not, if so, indicating that the part is the sticker, and after all parts are compared, collecting all stickers under the product.
Preferably, S32 includes the following steps:
s321: acquiring surface data of all parts under a current product;
s322: disassembling product parts into stickers and other parts;
comparing whether each part is the sticker identified in S31 or not by using a bom list path of the product part in the product, so as to divide all parts into two groups of sticker parts and other parts;
s323: finding out the plane of other parts attached to each sticker part;
finding out a surface A on the pasting object parts and a surface B of other parts which are mutually attached;
s324: calculating and judging whether the section A exceeds the surface B by a ray method;
preferably, the specific steps of S321 are: the method comprises the steps of firstly acquiring all planes of each part model under a product through an interface provided by three-dimensional design software, converting each plane into a line segment, wherein each line segment comprises three-dimensional coordinates of two endpoints in a space coordinate system, all line segments on each plane are combined together to form a closed polygon, and three non-collinear endpoints are taken out from all endpoints on each plane to form a triangular surface, so that the surface data of all parts under the current product can be acquired.
Preferably, the specific step of S323:
each plane on the circulating stickers is recorded as a surface A, each plane on all other parts is recycled and recorded as a surface B, whether the distances from three points forming the triangular surface of the surface A to the surface of the triangular surface of the surface B are all zero or not is calculated, and if the distances are all zero, the distances between the surface A and the surface B are zero; and calculating whether any end point of any line segment exists in the surface A or not in the polygon of the surface B by a ray method, if so, indicating that the surface A and the surface B have a superposed part, wherein the surface A and the surface B are jointed together, and the surface B is the plane of other parts jointed by the part of the sticker.
Preferably, in S324, it is calculated by ray method whether any end point of any line segment in the surface a is outside the polygon of the surface B, and the existence indicates that the sticker on which the surface a is located exceeds the plane to which it is attached.
Preferably, the bom list is a bill of materials, is a file describing a product structure in a data format, and is a product structure data file that can be recognized by a computer.
Compared with the prior art, the invention has the beneficial effects that: according to the automatic examination method, whether the stickers exceed the sticking surfaces or not is automatically examined through the software program, the traditional manual examination mode of a specially-assigned person is replaced, the examination period is shortened, the examination efficiency is improved, the examination quality is ensured, meanwhile, the labor cost is saved, and the method is particularly characterized in that:
1. in the prior art, a specially-assigned person is responsible for manually examining a certain specification in a targeted manner, a large number of examiners are needed under the condition of a large number of specifications, and if each specification is quickly and automatically completed by an automatic examination tool, one examiner can examine a plurality of specifications, so that the labor cost is effectively saved;
2. the automatic examination is realized by a program, the stickers are identified according to enterprise specifications and standards, and all stickers to be examined can be quickly identified no matter how many and complex products are and how large the number of parts under the products is, so that the condition of missed examination caused by manual inference by experience and visual observation is avoided;
3. the automatic examination corresponds to the stickers through bom list paths of the parts in the products, the bom list paths have uniqueness, manual work can only correspond to the stickers through drawing numbers, the drawing numbers can be repeated, the repeated examination of the same stickers can be caused, and the automatic examination can effectively avoid the problem;
4. the automatic examination adopts a program to carry out examination, the examination speed is high, the accuracy is high, and the manual work only adopts a mode of carrying out observation by naked eyes and utilizing a measuring function provided by three-dimensional design software to carry out examination, so that the efficiency is low, the accuracy of an examination result is not high, and the condition of misjudgment can exist;
5. after the automatic examination is completed, the program can brighten and display the stickers which do not meet the requirements in the three-dimensional drawing, so that an engineer can be helped to quickly locate the stickers which need to be modified, the modification time of the engineer is saved, the modification efficiency is improved, the engineer can be informed of the error only by means of character description and picture marking, the engineer needs to find out the error items through the characters and the pictures, and the modification period is prolonged.
Drawings
FIG. 1 is a flow chart illustrating the steps of a method for automatically inspecting the sticking object exceeding the sticking surface in a three-dimensional drawing according to the present invention;
fig. 2 is a flowchart of step S3 of a method for automatically checking whether the sticker exceeds the sticking surface in the three-dimensional drawing according to the present invention;
fig. 3 is a flowchart of step S32 of the method for automatically checking whether the sticker exceeds the sticking surface in the three-dimensional drawing according to the present invention;
fig. 4 is a schematic view of the ray method of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
A method for automatically checking whether a sticker exceeds a sticking surface in a three-dimensional drawing comprises the following steps:
s1: engineers complete product design using three-dimensional design software
The product design is that an engineer designs a three-dimensional drawing of a product according to a product design task book and by using three-dimensional design software, such as creo software, Zhongwang 3D software and the like, according to requirements in the task book.
S2: an engineer opens an automatic examination tool to examine the three-dimensional drawing of the product
The automatic examination tool is connected with the three-dimensional design software through an interface to obtain the data of the three-dimensional drawing of the product;
the automatic checking tool has the functions of automatically identifying all stickers, finding out and highlighting the stickers exceeding the stickers, and an engineer needs to check the drawing by using the tool after finishing the design of the three-dimensional drawing of a product.
S3: the automatic examination tool automatically identifies all stickers, finds out and highlights stickers beyond the sticking face
S3 includes:
s31: identifying stickers in the three-dimensional drawing of the product:
the stickers comprise labels, insulating films, conductive cloth and the like, are usually standard parts, and have drawing numbers in a fixed format in enterprises or set a parameter in a parameter list of a three-dimensional model to indicate the type of the parts; the drawing number refers to the name of the three-dimensional model of the part;
the automatic examination tool firstly obtains the drawing numbers and parameter lists of all parts under the whole product through an interface of three-dimensional design software, and then compares the drawing numbers of all the parts one by one to determine whether the drawing numbers of all the parts conform to the drawing number naming format of a certain sticker, if so, the parts are the stickers; if not, judging whether the parameter indicating the type of the part in the parameter list is the type name of a certain sticker or not, if so, indicating that the part is the sticker, and after all parts are compared, collecting all stickers under the product.
S32: calculating whether the stickers beyond the sticking plane of the stickers exist in the recognized stickers by a ray method:
the shape of the pasting object is flat like paper, and the pasting object consists of two large surfaces and a plurality of narrow and long small surfaces like lines, wherein one large surface is pasted with a certain plane of other parts when the pasting object is pasted, and the large surface and the plane have a superposition part and the distance is zero.
If the large surface is judged to exceed the plane to which the large surface is attached, the large surface is inevitably exceeded if any point exists on the edge forming the large surface and is outside the plane through ray calculation.
The ray method is to draw a horizontal ray from a point, observe the number of intersections of the ray and the polygon, and if the number of intersections is an odd number, the point is inside the polygon, and if the number of intersections is an even number, the point is outside the polygon.
S32 includes the following steps:
s321: obtaining surface data of all parts under current product
The method comprises the steps of firstly acquiring all planes of each part model under a product through an interface provided by three-dimensional design software, enabling each plane to comprise all edges forming the plane, converting each edge into a line segment, directly converting the line segment into the line segment if the line segment is a straight edge, and dividing the line segment into a plurality of line segments if the line segment is a non-straight edge, enabling each line segment to comprise three-dimensional coordinates of two endpoints in a space coordinate system, enabling all line segments on each plane to be combined together to form a closed polygon, taking three non-collinear endpoints out of all endpoints on each plane to form a triangular surface, and determining a plane according to the three points, so that surface data of all parts under the current product are obtained.
S322: the parts of the split product are parts of stickers and other parts
All parts are divided into two groups of sticker parts and other parts by comparing whether each part is the sticker identified in S31 with the bom list path (with uniqueness) of the part in the product.
The bom list is a bill of materials (bill of materials), i.e., a file describing a product structure in a data format, and is a product structure data file that can be recognized by a computer.
S323: finding out the plane of other parts attached to each part
Each plane on the circulating stickers is recorded as a surface A, each plane on all other parts is recycled and recorded as a surface B, whether the distances from three points forming the triangular surface of the surface A to the surface where the triangular surface of the surface B is located are all zero or not is calculated, and if the distances are all zero, the distances between the surface A and the surface B are zero; calculating whether any end point of any line segment in the surface A is in the polygon of the surface B by a ray method; a horizontal ray is led out from any end point of any line segment in the surface A, the number of the intersection points of the horizontal ray and the line segments of all sides of the surface B is calculated, and if the number is odd, the end point is in the surface B; if the surface A and the surface B exist, the surface A and the surface B are overlapped, and the surface A and the surface B are attached together. That is, the surface A of the sticker part is bonded to the surface B of the other part. The surface B is the plane of other parts jointed by the part of the sticker.
S324: calculating and judging whether the section A exceeds the surface B by a ray method
Calculating whether any end point of any line segment in the surface A is outside the polygon of the surface B by a ray method, namely, leading out a horizontal ray from any end point of any line segment in the surface A, calculating the number of line segment intersection points of all sides of the horizontal ray and the surface B, and if the number of the intersection points is an even number, indicating that the surface A exceeds the surface B, namely indicating that the paste on which the surface A is positioned exceeds the plane on which the surface A is adhered.
S33: highlighting the stickers exceeding the sticking plane of the stickers in the three-dimensional drawing:
three-dimensional design software in the prior art provides an interface to highlight an entity, as long as a bom list path of the object in the product that is desired to be highlighted is imported.
If stickers beyond the pasting surface are found out through S324, the bom list path of the stickers is transmitted through the interface of the three-dimensional design software, so that the stickers are highlighted in the three-dimensional drawing of the product, and an engineer can conveniently and quickly locate the stickers with problems.
S4: engineer modifying highlighted sticker position
And (3) an engineer quickly positions the stickers exceeding the sticking surface in the three-dimensional drawing through highlighting of colors and adjusts the stickers so as to meet the requirements of design specifications.
S5: the engineer submits the three-dimensional drawing to a reviewer after finishing modification
After the modification is completed, the engineer knows the examiner and transfers the three-dimensional drawing of the product to the examiner.
S6: the examiner opens the automatic examination tool to examine the three-dimensional drawing of the product
And after the examiner takes the three-dimensional drawing of the product, the three-dimensional drawing is examined again by using the automatic examination tool.
S7: if the three-dimensional drawing is submitted to the production line by the auditor, if the three-dimensional drawing is returned to the engineer by the auditor with problems, the steps from S2 to S7 are repeated until the drawing can be put into production according to the compliance.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that the invention be covered by the appended claims without departing from the spirit and scope of the invention.
Claims (7)
1. A method for automatically checking whether a sticker exceeds a sticking surface in a three-dimensional drawing is characterized by comprising the following steps: the method comprises the following steps:
s1: an engineer completes product design by using three-dimensional design software;
s2: an engineer opens an automatic examination tool to examine the three-dimensional drawing of the product;
the automatic examination tool is connected with the three-dimensional design software through an interface to obtain the data of the three-dimensional drawing of the product;
s3: the automatic examination tool automatically identifies all stickers, finds out and highlights the stickers beyond the sticking surface;
s3 includes:
s31: identifying a sticker in a three-dimensional drawing of a product;
the sticker is a standard part, a drawing number with a fixed format is arranged in an enterprise or a parameter is set in a parameter list of the three-dimensional model to indicate the type of the part; the figure number is the name of a three-dimensional model of the part;
s32: calculating whether the stickers beyond the sticking plane of the stickers exist in the recognized stickers by a ray method;
the ray method is that a horizontal ray is led out from a point, the number of intersection points of the ray and a polygon is observed, if the number of the intersection points is an odd number, the point is in the polygon, and if the number of the intersection points is an even number, the point is out of the polygon;
s33: highlighting the stickers exceeding the sticking plane of the stickers in the three-dimensional drawing;
transmitting the bom list paths of the stickers exceeding the sticking plane of the three-dimensional design software through an interface of the three-dimensional design software, and highlighting and displaying the bom list paths in the three-dimensional drawing of the product;
s4: the engineer modifies the highlighted position of the sticker;
s5: after the engineer finishes the modification, submitting the three-dimensional drawing to a reviewer;
s6: the examiner opens an automatic examination tool to examine the three-dimensional drawing of the product;
s7: and (4) submitting the three-dimensional drawing to a production line through a reviewer, returning the three-dimensional drawing to an engineer by a question reviewer, and repeating the steps from S2 to S7 until the three-dimensional drawing is in compliance.
2. The method for automatically inspecting the sticking surface exceeding of the sticking object in the three-dimensional drawing according to claim 1, wherein: the specific steps of S31 are: the automatic examination tool firstly obtains the picture numbers and parameter lists of all parts under the whole product through an interface of three-dimensional design software, and then compares whether the picture number of each part accords with the picture number naming format of a certain sticker, if so, the part is the sticker; if the part type is not matched with the part type, judging whether the parameter indicating the part type in the parameter list is the type name of a certain sticker or not, if so, indicating that the part is the sticker, and after all parts are compared, collecting all stickers under the product.
3. The method for automatically inspecting the sticking object beyond the sticking surface in the three-dimensional drawing according to claim 1, wherein: s32 includes the following steps:
s321: acquiring surface data of all parts under a current product;
s322: the product parts are disassembled into pasting parts and other parts;
comparing whether each part is the sticker identified in S31 or not by using a bom list path of the product part in the product, so as to divide all parts into two groups of sticker parts and other parts;
s323: finding out the plane of other parts attached to each sticker part;
finding out a surface A on the pasting object parts and a surface B of other parts which are mutually attached;
s324: and calculating and judging whether the section A exceeds the surface B by a ray method.
4. The method for automatically inspecting the sticking object beyond the sticking surface in the three-dimensional drawing according to claim 3, wherein: the specific step of S321 is: the method comprises the steps of firstly acquiring all planes of each part model under a product through an interface provided by three-dimensional design software, converting each plane into a line segment, wherein each line segment comprises three-dimensional coordinates of two endpoints in a space coordinate system, all line segments on each plane are combined together to form a closed polygon, and three non-collinear endpoints are taken out from all endpoints on each plane to form a triangular surface, so that the surface data of all parts under the current product can be acquired.
5. The method for automatically inspecting the sticking object beyond the sticking surface in the three-dimensional drawing according to claim 3, wherein: s323, a specific step:
each plane on the circulating stickers is recorded as a surface A, each plane on all other parts is recycled and recorded as a surface B, whether the distances from three points forming the triangular surface of the surface A to the surface where the triangular surface of the surface B is located are all zero or not is calculated, and if the distances are all zero, the distances between the surface A and the surface B are zero; and calculating whether any end point of any line segment exists in the surface A or not in the polygon of the surface B by a ray method, if so, indicating that the surface A and the surface B have a superposed part, wherein the surface A and the surface B are jointed together, and the surface B is the plane of other parts jointed by the part of the sticker.
6. The method for automatically inspecting the sticking object beyond the sticking surface in the three-dimensional drawing according to claim 3, wherein: in S324, it is calculated by ray method whether any end point of any line segment exists outside the polygon of the face B in the face a, and the existence indicates that the sticker on which the face a is located exceeds the plane to which the face a is attached.
7. The method for automatically inspecting the sticking object beyond the sticking surface in the three-dimensional drawing according to claim 1, wherein: the bom list is a bill of materials, is a file for describing a product structure in a data format, and is a product structure data file which can be recognized by a computer.
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