TW202248890A - System and method for automatically identifying engineering drawings - Google Patents

Abstract

A system for automatically identifying engineering drawings includes a calculation device, a module for disassembling drawings and a module for analyzing drawings, wherein the module for disassembling drawings is executed by the calculation device, and the module for disassembling drawings is used to disassemble an engineering drawing into a plurality of structural units which are classified by at least one geometric feature; the module for analyzing drawings is executed by the calculation device, and the module for analyzing drawings is used to analyze the engineering drawing and the structural units, whereby to provide a plurality of drawing information corresponding to the engineering drawing. A method for automatically identifying engineering drawings is also provided herein.

Description

Engineering drawing automatic recognition system and method

The present invention relates to an identification system and method, in particular to an engineering drawing automatic identification system and method.

With the advancement of information technology, the processing of traditional manufacturing has gradually changed from manual operation to computer control. Roughly speaking, whether the engineering drawings required for processing are manually operated or controlled by computers, most of the drawings currently require manual reading to extract the necessary key parameters and specific processing requirements.

In other words, most of the product engineering drawings are drawn with drawing software, and the product engineering drawings include other information such as processing requirements in addition to product specifications. Before the finished product engineering drawing is sent to the production workshop for manufacturing, it is usually necessary for professionals to analyze the graphic information of the product engineering drawing, and additionally summarize and extract complex information such as structural information and processing requirements of the product engineering drawing.

For example, a general product engineering drawing usually includes structural information of hundreds of units and at least one additional processing requirement. If all are analyzed by professionals before processing and production, it will take hours or even days to complete. However, in the era of fierce competition, the above-mentioned methods have gradually failed to meet the needs of the upstream and downstream supply chains. Therefore, a novel product engineering drawing analysis system and method is urgently needed to solve the above-mentioned time-consuming and labor-intensive problems.

In view of this, the present invention provides a system and method for automatic identification of engineering drawings, through which the drawing analysis module that can automatically analyze engineering drawings and structural units can quickly obtain multiple types of drawing information corresponding to the engineering drawing, so it can Bring more benefits to related industries.

An object of the present invention is to provide an automatic identification system for engineering drawings, which includes a computing device, a drawing disassembly module and a drawing analysis module. Wherein, the drawing dismantling module is executed on the computing device, and the drawing dismantling module disassembles an engineering drawing into a plurality of structural units, and classifies these structural units according to at least one geometric feature; The graphic analysis module is executed on the computing device, and the graphic analysis module analyzes the engineering drawing and the structural units to obtain multiple kinds of graphic information corresponding to the engineering drawing.

Another object of the present invention is to provide a method for automatic identification of engineering drawings, which includes at least the following steps: Provide a computing device, the computing device includes a drawing dismantling module and a drawing analysis module; Executing the drawing dismantling module, dismantling an engineering drawing into a plurality of structural units, and classifying these structural units according to at least one geometric feature; Execute the graphic analysis module to analyze the engineering drawing and the structural units to obtain multiple types of graphic information corresponding to the engineering drawing.

The effect of the present invention is that by means of the drawing analysis module capable of automatically analyzing engineering drawings and structural units, multiple types of drawing information corresponding to the engineering drawing can be quickly obtained, thereby reducing time-consuming and labor-intensive manpower interpretation, and Improve the analysis efficiency of engineering drawings, and bring more benefits to related industries.

The engineering drawings automatic recognition system and method of the present invention will be described below in conjunction with specific embodiments and drawings of the present invention, but the specific embodiments and drawings of the present invention are used to clarify the spirit of the present invention to make it easier to understand, not to It is used to limit the patent scope of the present invention.

Please refer to FIG. 1 , an embodiment of the present invention provides an automatic identification system 100 for engineering drawings, which includes a computing device 110 , a drawing disassembly module 120 and a drawing analysis module 130 . Wherein, the drawing dismantling module 120 is executed on the computing device 110 , and an engineering drawing ED is input into the computing device 110 . The drawing disassembly module 120 disassembles the engineering drawing ED into a plurality of structural units (not shown), and classifies the structural units according to at least one geometric feature.

In the embodiment of the present invention, these structural units include the basic line types presented in the engineering drawing ED, such as vertical lines, horizontal lines, arcs, circles or combinations thereof, but not limited thereto, and are not exhaustive here. List all basic line types. In an embodiment of the present invention, the at least one geometric feature includes the above-mentioned basic line type, and the structural units are classified according to the above-mentioned basic line type, for example, the vertical line on the engineering drawing ED is classified into the first category, Classify horizontal lines on the drawing ED as class 2, arcs on the drawing ED as class 3, and/or circles on the drawing ED as class 4, but not for the limit.

In the embodiment of the present invention, in addition to being classified according to the above-mentioned basic line types, these structural units are further added into groups according to functionality and purpose. For example, these structural units are pre-classified according to the position of the picture frame; and then these structural units are added to the group of top view, side view, partial enlarged view or a combination thereof. For another example, in order to find those arcs whose starting and ending angles are greater than 180 degrees, all arcs must be checked one by one and added to a new group. By forming groups according to functionality, the accuracy of automatic image reading can be improved and the probability of program errors can be reduced.

In FIG. 1, the graphic analysis module 130 is executed on the computing device 110, and the graphic analysis module 130 analyzes the engineering drawing ED and the structural units to obtain multiple diagrams corresponding to the engineering drawing ED. face information DI. In the embodiment of the present invention, the graph analysis module 130 is signal-connected to the graph dismantling module 120, so that the structural units disassembled by the graph dismantling module 120 can be directly transferred to the graph The surface analysis module 130 directly performs analysis, thereby simplifying the process of information transmission and improving the efficiency of data analysis.

In the embodiment of the present invention, the drawing analysis module 130 includes identifying a top view, a side view, at least one partial enlarged view, at least one character, at least one symbol, at least one value or a combination thereof for identifying the engineering drawing ED. In the embodiment of the present invention, the drawing information DI obtained by the drawing analysis module 130 corresponding to the engineering drawing ED includes a plurality of workpiece structural features, at least one processing requirement or a combination thereof, wherein the workpiece structural features include A workpiece top view, a workpiece side view, at least one partial enlarged view, at least one character, at least one symbol, at least one numerical value or a combination thereof of the engineering drawing. In the embodiment of the present invention, the graphic analysis module 130 includes comparing at least one common parameter of the top view and the side view to confirm whether the common parameters are consistent, and whether the top view and the side view have Conditions for proportional magnification; for example, when the outer diameter of the workpiece is used as the common parameter, the upper view of the workpiece analyzed by the drawing analysis module 130 and the outer diameter of the workpiece side view should be consistent, In addition, the outer diameter value marked in the engineering drawing ED can be converted into the multiplier of the equal scale magnification of the top view and the side view.

For example, an upper view of a workpiece, a side view of a workpiece, at least one partial enlarged view, at least one character, at least one symbol, at least one numerical value or a combination thereof are presented on the engineering drawing ED, and the drawing analysis module 130 is to distinguish the structural features of the workpiece from each block on the engineering drawing ED by identifying the structural features of the top view, the side view, and the partial enlarged view, identifying characters, symbols, numbers, or combinations thereof kind of.

Please refer to Figure 1 and Figure 2 together, a method for automatic identification of engineering drawings, including at least the following steps: Step S01, providing the above-mentioned computing device 110, the computing device 110 including the above-mentioned drawing dismantling module 120 and the above-mentioned drawing analysis module 130; Step S02, execute the drawing disassembly module 120, disassemble the engineering drawing ED into a plurality of structural units (not shown in the figure), and classify these structural units according to at least one geometric feature; Step S03 , execute the drawing analysis module 130 to analyze the engineering drawing ED and the structural units to obtain a plurality of drawing information DI corresponding to the engineering drawing ED.

In the embodiment of the present invention, analyzing the engineering drawing and the structural units includes identifying the top view block in the engineering drawing ED, identifying the side view block in the engineering drawing ED, and identifying the products in the engineering drawing ED Kind or type of workpiece.

Next, an embodiment of the present invention is used to describe the method of judging the upper view block in the engineering drawing ED. As shown in Figure 3, when the engineering drawing ED is a mold core engineering drawing for making an optical element or an optical lens engineering drawing, the upper view of the mold core engineering drawing or the optical lens engineering drawing has an upper view center, And the center of the upper view is to find the block with the most circles on the engineering drawing. In other embodiments of the present invention, the block with the most arc centers on the engineering drawing may also be found. In other embodiments of the present invention, if there is no complete circle in the block with the most arc centers, it is judged that this block is not the top view, and the block that can form a complete circle and has the second most arc centers is identified.

It is worth mentioning that identifying the upper view block in the engineering drawing ED may further include judging the outer diameter of the mold core, judging the diameter of the aspheric surface, judging the magnification, judging whether there is a D-cut, judging whether there is Gate, judging whether there is a runner, judging whether there is an ejector pin, judging the exhaust design or a combination thereof. Among them, judging whether there are gates can further include judging the number, size and/or position of gates; judging whether there are runners can further include judging the number, size and/or position of runners; judging whether there are thimbles can further include judging the number, size, and/or location.

Next, another embodiment of the present invention is used to illustrate the judgment method of the side view block in the engineering drawing ED. As shown in Figure 4, when the engineering drawing ED is the engineering drawing of the mold core for making optical elements, the mold core engineering drawing has a side view of the mold core, and the blocks of the mold core side view have lines in various directions , such as a plurality of vertical lines, a plurality of horizontal lines, at least one arc, at least one curve or a combination thereof, and these lines can be connected to form a closed pattern, and the closed pattern is the side view of the mold core, but it is not regarded as limit.

It is worth mentioning that the identification of the side view block in the engineering drawing ED can also be judged by its position in the engineering drawing ED. For example, the side view block is usually adjacent to the upper view block, so it can be determined by Whether the block above, below, left, and right of the upper view block is a closed pattern formed by multiple vertical lines and multiple horizontal lines is used to identify the side view block in the engineering drawing ED, but this is not a limitation.

In addition, by comparing the outer diameter of the workpiece in the upper view and the outer diameter of the workpiece in the side view in the engineering drawing ED, the location and correlation of the upper view block and the side view block in the engineering drawing ED can also be confirmed. information, without limitation.

Next, another embodiment of the present invention will be used to describe the method of judging the workpiece type in the engineering drawing ED. As shown in Figure 5, when the engineering drawing ED is the engineering drawing of the mold core for making the optical element or the engineering drawing of the optical lens, the upper view block, the side view block or its At least one structural feature in the combination determines the type of the workpiece. In the embodiment of the present invention, the type of workpiece can be, for example, the type of mold for making optical elements, including insert mold cores, spacer mold cores, lens mold cores or combinations thereof. In the embodiment of the present invention, the sub-mold core refers to the mold core for making a lens insert or a lens housing.

In an example of the present invention, according to whether the number of concentric circles of the upper view block in the engineering drawing ED is greater than a preset value, it is judged whether the workpiece type is a sub-mold core, as shown in Figure 5; in this example , when the workpiece type is a sub-mold core, the upper view block in the engineering drawing ED has a plurality of concentric circle structures, so the number of concentric circles can be used as a criterion for judging whether the workpiece type is a sub-mold core in accordance with. In another example of the present invention, according to whether the total number of arcs and cloud-shaped lines in the upper view block in the engineering drawing ED is less than a preset value, it is judged whether the type of workpiece is an entry mold core, as shown in Figure 6 The judging modes of the example of Fig. 6 and the example of Fig. 5 are complementary to each other, when the workpiece type is a sub-mold core, the upper view block in the engineering drawing ED has a plurality of concentric circle structures, so the number of concentric circles is large At this time, the total number of arcs and cloud-shaped lines will be reduced, or even there will be no arcs and cloud-shaped lines. Therefore, the example in Figure 6 can be used as the basis for judging whether the workpiece type is a sub-mold based on the total number of arcs and cloud-shaped lines. In yet another example of the present invention, according to whether the number of stages of the side view block in the engineering drawing ED is greater than a preset value, it is judged whether the workpiece type is a sub-mold core, as shown in Figure 7; in this example , when the workpiece type is a sub-mold core, the side view block in the engineering drawing ED has a multi-step ladder structure, so it can be judged whether the workpiece type is a sub-mold core according to the number of steps in the side view basis.

In Figures 5 to 7, according to whether the central area of the top edge in the side view block or the partially enlarged side view block in the engineering drawing ED has a cloud-shaped line, it is judged whether the workpiece type is a spacer mold core or a lens Mo Ren. In the embodiment of the present invention, a cloud-shaped line refers to a smooth curve passing through or approaching a series of designated points.

In FIGS. 5 to 7, it is judged whether the side view block in the engineering drawing ED contains a complete double-sided feature of the optical lens, which means that the side view block in the engineering drawing ED can be divided into two complete Each single-sided feature contains the empty step, bearing surface, lens area or combination thereof that the optical lens should have. If the side view block in the engineering drawing ED includes a complete double-sided feature of the optical lens, it can be determined that the engineering drawing ED is an engineering drawing of an optical lens. In an example of the present invention, when the engineering drawing ED is an engineering drawing of an optical lens, the lens area of the engineering drawing of the optical lens is represented by cloud-shaped lines, arcs or a combination thereof, but not limited thereto.

With the above-mentioned embodiment of the present invention, the drawing analysis module can automatically analyze engineering drawings and structural units to quickly obtain multiple types of drawing information corresponding to the engineering drawings, thus reducing time-consuming and labor-intensive manual interpretation, and Improve the analysis efficiency of engineering drawings, and bring more benefits to related industries.

100: Automatic identification system for engineering drawings 110: computing device 120: Drawing dismantling module 130: Graphic analysis module ED: Engineering Drawings DI: Drawing Information S01, S02, S03: steps

[Fig. 1] is a block diagram of an automatic identification system for engineering drawings according to an embodiment of the present invention. [Fig. 2] is a flowchart of an automatic identification method for engineering drawings according to an embodiment of the present invention. [Fig. 3] is a decision diagram of the automatic identification method for engineering drawings according to an embodiment of the present invention. [Fig. 4] is a decision diagram of the method for automatic identification of engineering drawings according to another embodiment of the present invention. [Fig. 5] is a decision diagram of the method for automatic identification of engineering drawings according to yet another embodiment of the present invention.

100: Automatic identification system for engineering drawings

110: computing device

120: Drawing dismantling module

130: Graphic analysis module

ED: Engineering Drawings

DI: Drawing Information

Claims (10)

An engineering drawing automatic identification system, comprising: a computing device; A drawing disassembly module, executed on the computing device, the drawing disassembly module disassembles an engineering drawing into a plurality of structural units, and classifies the structural units according to at least one geometric feature; and A graphic analysis module is executed on the computing device. The graphic analysis module analyzes the engineering drawing and the structural units to obtain multiple types of graphic information corresponding to the engineering drawing. The engineering drawing automatic recognition system as described in Claim 1, wherein the drawing analysis module includes a top view, a side view, at least one partial enlarged view, at least one character, at least one symbol, and at least one value for identifying the engineering drawing or a combination thereof. The engineering drawing automatic recognition system as described in Claim 1, wherein the drawing information includes a plurality of workpiece structural features, at least one processing requirement or a combination thereof. The engineering drawing automatic recognition system as described in claim 3, wherein the structural features of the workpiece include a top view of the workpiece, a side view of the workpiece, a type of workpiece, at least one partial enlarged view, at least one character, at least one symbol, and at least one value or a combination thereof. The engineering drawing automatic recognition system as described in claim 1, wherein the drawing analysis module is signal-connected to the drawing dismantling module. A method for automatic identification of engineering drawings, comprising: Provide a computing device, the computing device includes a drawing dismantling module and a drawing analysis module; Executing the drawing dismantling module, dismantling an engineering drawing into a plurality of structural units, and classifying these structural units according to at least one geometric feature; Execute the graphic analysis module to analyze the engineering drawing and the structural units to obtain multiple types of graphic information corresponding to the engineering drawing. The engineering drawing automatic recognition method as described in request item 6, wherein analyzing the engineering drawing and the structural units includes: Identify the top view block in the drawing; Identify the side view blocks in the drawing; and Identify the types of artifacts in this drawing. The method for automatic identification of engineering drawings as described in Claim 7, wherein identifying the upper view block in the engineering drawing includes determining the center position of the upper view. The engineering drawing automatic recognition method as described in claim 7, wherein identifying the side view block in the engineering drawing includes judging that the engineering drawing consists of a plurality of vertical lines, a plurality of horizontal lines, at least one arc, at least one curve or a combination thereof The closed pattern formed. The method for automatic recognition of engineering drawings as described in Claim 7, wherein identifying the workpiece type in the engineering drawing is to judge the workpiece type through at least one structural feature in the top view block, the side view block or a combination thereof.

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