JPS6338000A - Dimension display automatic drawing device for part figure - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic dimension display drawing device for parts drawings, and in particular to an automatic dimension display device suitable for displaying inner circumference data of a front view of a round part. Regarding the drawing device.

[Conventional technology]

Conventionally, when outputting a part drawing to a CAD system terminal, if you want to display the required dimensional data, you need to know where to add dimension lines to the drawing, how to extend leader lines, and where to display the dimensional data. Whether or not to write out the information is left to the operator's discretion, and each operator performs the setting process by interacting with the display screen.

[Problem that the invention seeks to solve]

However, in conventional interactive operations, when the object to be displayed is a round part, there is a lot of unique minute data on the outer and inner parts of the part, and the side view contains pinch points for hole machining. The work itself is troublesome as it requires processing of lines and concentric circles, and if you export carelessly, the line spacing becomes narrow and there is no space left, or the lines intersect with each other, making the drawing difficult to read. In some cases, the process has to be restarted from the beginning, which results in unnecessary effort, time, and a great burden on the engineer, which significantly impairs work efficiency.

The present invention was devised in view of these problems, and automatically determines and processes the writing positions of dimension lines, leader lines, and dimension data, thereby reducing the burden on engineers and significantly improving work efficiency. It is an object of the present invention to provide an automatic drawing device for displaying dimensions of parts diagrams that improves performance.

[Means for solving problems]

In the present invention, the means for solving the above-mentioned problems is as shown in the basic configuration shown in FIG. A left-side drawing element setting section 2a extracts only the drawing elements on the left side of the drawing based on the results, and edits the remaining graphic elements from the right side of the drawing to the starting point and ending point side. A start point/end point right side editing section 1b, a right side drawing element setting section 2b that extracts only the drawing elements on the right side of the drawing based on the results, and an inner drawing element setting section that sets the inner circumference contour of the part using the extracted drawing elements. a horizontal dimension drawing setting section 3 that sets the horizontal dimension in the drawing data according to a predetermined priority order, and a horizontal dimension drawing setting section 3 that sets the horizontal dimension in the drawing data by allocating the radial dimension to the left, right, or within the part figure, and sets it in the drawing data. A radial dimension drawing setting section 4 for setting, and an inner circumferential dimension drawing processing section 5 for controlling horizontal dimension drawing data and radial dimension drawing data.
This is an automatic drawing device for displaying dimensions of parts drawings.

Note that the parts diagram data is downloaded from the upper CAD data 6, and the reference setting data 7 is set by the operator using the keyboard. Further, the drawing data managed by the outer circumferential dimension drawing processing section 5 is sent to a desired display means 8.

[Effect]

As shown in Figure 2, the parts diagram data is composed of the inside of the part as a collection of graphical elements (for example, line segments), but the inside is not necessarily penetrated, so the reference setting data is Based on this, the start point/end point left side editing unit 1a edits each graphical element from the left side of the drawing to the start point/end point side, and based on the result, the left side drawing element setting unit 2a extracts only the drawing elements on the left side of the drawing, The starting point/end point right side editing section 1b edits the remaining graphic elements from the right side of the drawing toward the starting point/end point side, and the right side drawing element setting section 2b extracts only the drawing elements on the right side of the drawing. The inner circumference drawing element setting section 2c forms the inner circumference of the component by combining both of them. When the inner circumference drawing elements are extracted, the horizontal dimension drawing setting unit 3 sets drawing data in the horizontal dimension while avoiding interference by giving priority, and the radial dimension drawing setting unit 4 sets the drawing data in the horizontal direction. Drawing data is set in the radial dimension while avoiding interference by distributing the position to either the left or right side of the part figure or within the figure, and the inner circumference dimension drawing processing unit 5 centralizes these dimension drawing data to the desired size. output to the display means 8.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to examples and drawings thereof.

FIG. 3 is a block diagram showing an example of the configuration of an embodiment of the present invention. In FIG. 3, the parts drawing dimension display automatic drawing device includes the start point/end point left side editing section la, the left side drawing element setting section 2a, the starting point/end point right side editing section 1b, the right side drawing element setting section 2b, and the inside. Circumference drawing element setting section 2C, horizontal dimension drawing setting section 3, diameter dimension drawing setting section 4, inner circumference dimension drawing processing section 5, CAD data memory 6, reference setting data memory 7, and keyboard included. It is roughly composed of a display 8, its input/output board 8a, and a CPU 9 that controls them and also serves as the central processing unit of the host device.

4 to 9 are flowcharts showing the operating procedure of the above device. Hereinafter, the inside of the apparatus shown in FIG. 3 will be explained in more detail according to the flow.

Fig. 4 is a procedure diagram showing an outline of the dimension drawing operation for the inner circumference of the part. When a command for 0 dimension drawing is given, as the 0th stage of the flow, first the left and right start points, end points & I
The standard setting data 7 is read into the collection parts 1a and 1b,
In the left side start point/end point editing section 1a, for one graphic element, the start point is the side with the minimum X coordinate value and the side with the maximum Y coordinate value, and the end point is the side with the maximum X coordinate value and the minimum Y coordinate value. The graphical elements of the CAD data 6 are rearranged in order from those whose starting points are on the left. In the right-hand start point/end point editing section lb, each graphic element edited with 0, which is the opposite, is input to the left and right drawing element setting sections 2a and 2b, but first, on the left side, those that do not correspond to the left side are sent to the right side. , the rest are processed on the right side, and if they still do not apply to the right side, processing ends.

The flowchart in FIG. 5 shows this operation in more detail.゛That is, along with the definition of the start point and end point, set the center axis C of the inner circumference shown in Fig. 2 as Y = 0, and start editing from either the left or right side (generally the left side). In this case, first let each graphical element be E n (X)
Sort in the order of s > E n (Y) s > E n (X) e, and the left extraction standard element setting section 21 extracts the graphic element at the leftmost X coordinate (Xmin) and sets it in the built-in register. . Then, positive graphic elements En are extracted in the order of closestness to Y-0, and the extracted element left/right determination unit 22 determines whether the starting point of the graphic element is equal to the coordinates set in the register. If E n (X)s -R(X), the extracted figure element corresponds to the left side, so the left side drawing element extraction unit 23 determines whether there is a perpendicular line passing through the intersection and the symmetrical element regarding y-O. After examining whether the graphic element is null or not, the left drawing element type processing section 24 sets the end point of the graphic element in the register.

On the other hand, if the extraction element left/right determination section 22 determines that the extracted element does not correspond to the left side, and if there is no perpendicular line passing through the intersection (not a hole), those graphic elements are input again to the start point/end point right side editing section 1b. , each graphical element is E n (X
) e> E n (Y) e> E n (X) s, and the right side extraction reference element setting unit 25 extracts the graphic element at the rightmost X coordinate (Xmax) and sets it in the built-in register. . Then, in the right side drawing element extraction section 26,
After extracting the positive graphical elements En in the order of closestness to Y-0, and examining the presence or absence of a perpendicular line passing through the intersection and the presence or absence of a symmetrical element with respect to Y-0, the right side drawing element type processing unit 27 extracts the end point of the graphical element. Set in the register. If it is determined that the right side does not apply, or if there is no perpendicular line passing through the intersection, the process ends.

The processing results of the left side drawing element type processing section 24 and the right side drawing element type processing section 27 are processed by the inner drawing element setting section 2c.
The horizontal dimension drawing setting section 3 or the radial dimension drawing setting section 4 performs setting processing for the horizontal dimension drawing setting section 3 or the radial dimension drawing setting section 4.

The horizontal dimension drawing priority determination unit 31 determines the priority order of dimension drawing in three levels, and after processing the horizontal dimension in three dimension data processing units 32, 33, and 34, the horizontal dimension drawing data setting unit 35 in an integrated manner. The priority order may be determined by the operator setting the desired standards in the standard setting data, but it is usually based on the Japanese Industrial Standards (Japanese Industrial Standards).
It is recommended to refer to and set the drafting items of JIS).

The 0th stage of the flow is the first drawing process for the horizontal dimension part,
The details are shown in the sub-flow of FIG. In the first drawing process, priority is given to necking, C chamfering, and 8 chamfering in the order shown in FIGS. 10(a) to 1c), and after determining and avoiding interference with dimension lines and N0TE data, drawing processing is performed. Implement.

The 0th stage of the flow is the second drawing process for the horizontal dimension part,
The details are shown in the sub-flow of FIG. The second drawing process includes O-ring grooves shown in FIG. 10 (d1 to (N),
Priority is given in the order of general groove, angle, small dimension, and vertical center line, and drawing processing is performed after determining and avoiding interference with the dimension line and N0TE data.

The 0th stage of the flow is the third drawing process for the horizontal dimension part,
The details are shown in the sub-flow of FIG. In the third drawing process, the dimensions between the horizontal drawing elements are determined in accordance with the settings shown in advance in the reference setting data, either by the left standard drawing process as shown in FIG. The processing is performed by either the right reference drawing process as shown in FIG. 10(k) or the reference drawing process as shown in FIG. 10(k).

In addition, the diameter dimension is determined as shown in the sub flow in Figure 9 as the diameter dimension drawing process which is the 0th stage of the flow.
Furthermore, the above-mentioned leader lines and dimension lines.

After considering interference or approach with N0TE as shown in the flow, depending on the result, the figure left side drawing data processing unit 4
The drawing process is performed by any of the 22-figure internal drawing data processing section 432 and the figure left-side drawing data processing section 44, and the drawing processing is integrated by the diameter section drawing data setting section 45.

When the drawing data is set in the horizontal dimension drawing setting section 3 and the diameter dimension drawing setting section 4, the outer circumferential dimension drawing processing section 5 further integrates them and outputs them to the display means 8. In each of the above steps, the output dimensional drawing is divided into the upper and lower parts of the outer circumference, the horizontal elements are processed preferentially starting from the smallest parts, and the radial elements are appropriately distributed to the left and right. Therefore, the desired dimensions can be automatically and easily displayed on a display, printer, etc. without bothering the operator's hands.

〔Effect of the invention〕

As explained above, according to the present invention, it is suitable for displaying dimensions on the inner circumference of a part drawing, and automatically determines and processes the writing positions of dimension lines, leader lines, and dimension data, thereby reducing the burden on engineers. Therefore, it is possible to provide an automatic drawing device for displaying dimensions of parts diagrams that significantly improves workability.

[Brief explanation of the drawing]

Figure 1 is a basic configuration diagram of the present invention, Figure 2 is an explanatory diagram of parts diagrams, Figure 3 is a configuration diagram of an embodiment, Figures 4 to 9 are flowcharts of the embodiment, and Figure 10 is an explanatory diagram of the parts diagram. It is an explanatory diagram of drawing elements. 1a; Start point/end point left side editing section, 1b; Start point/end point right side editing section, 2a; Left side drawing element setting section, 2b; Right side drawing element setting section, 2C; Inner circumference drawing element setting section, 3; Horizontal dimension drawing setting section 4; diameter dimension drawing setting section; 5; inner circumference dimension drawing processing section; 6iCAD data; 7; reference setting data; 8; display means; 9; CPU. Patent applicant: Hitachi Seiki Co., Ltd. - 11 Figure 1 Figure 2 (Q) (b) Figure 4 (b) C@+)ut='PJ'L (
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Claims (1)

[Claims] This is an automatic parts drawing dimension display drawing device that outputs the dimension data assigned to the parts drawing together with the figure, and is a starting point for editing each graphical element of the parts drawing data by starting point and ending point from the left side of the drawing based on standard setting data. - An end point left side editing section, a left side drawing element setting section that extracts only the drawing elements on the left side of the drawing based on the results, and a start point/end point right side editing section that edits the remaining graphic elements by start point and end point from the right side of the drawing. Based on the results, there is a right-side drawing element setting section that extracts only the drawing elements on the right side of the drawing, an inner-circumference drawing element setting section that sets the inner contour of the part using the extracted drawing elements, and a predetermined horizontal dimension. a horizontal dimension drawing setting section that sets the radial dimension in the drawing data according to the priority order of the radial dimension, a radial dimension drawing setting section that sets the radial dimension in the drawing data by distributing the radial dimension to the left, right, or within the part shape, and setting the horizontal dimension to the drawing data. An automatic drawing device for displaying dimensions of parts diagrams, comprising: an inner circumferential dimension drawing processing unit that controls drawing data and diameter dimension drawing data.