JPH0816630A - Cad system for substrate assembling diagram production device - Google Patents

Abstract

PURPOSE:To eliminate the manual writing jobs and to shorten the production time of a substrate assembling diagram by cutting the parts overlapping a segment that connects the start and end points of a comment arrow line produced by a line production part. CONSTITUTION:A segment that connects the start and end points of a comment arrow line produced by a line production part 3 is obtained. Then an effective range where no overlapping is caused to the segment is calculated for all parts that overlaps the segment based on the arrangement data on plural parts which are assembled on a substrate. A line cutting pat 12 divides the segment into plural lines that have no overlapping to all parts. Then the part 12 cuts the parts overlapping the segment to secure plural lines that have no overlapping to any parts. Thus it is possible to easily produce a comment arrow line and to eliminate the manual writing jobs. Then the production time can be shortened for a substrate assembling diagram.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a CAD of a board assembly drawing manufacturing apparatus for creating assembly drawings of a plurality of parts to be assembled on a board.
(Computer Aided Design) This is related to the note arrow line creation part of the system.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional board assembly drawing manufacturing apparatus C.
It is a block diagram for creating a note arrow line of the AD system. As shown in the figure, a CAD system of a board assembly drawing manufacturing apparatus having a function of creating an annotation arrow line stores an input unit 1 for inputting a start point and an end point of the annotation arrow line, and coordinates of a point input from the input unit 1. The input data storage unit 2, the line creation unit 3 that creates a line segment from the stored data, the output data storage unit 4 that stores the created line segment data, and the display unit that outputs the output data to the display device 6. It is composed of 5 and. 3A and 3B are diagrams showing the processing contents of FIG. In the figure, KB is the outer shape of the board, and D1 is a part assembled in the board. The operation of FIG. 2 will be described below with reference to these figures. As shown in FIG. 3A, the coordinates of the starting point P0 (x0, y0) and the ending point P1 (x1, y1) of the annotation arrow line are input from the input unit 1, and these coordinates are stored in the input data storage unit 2. To be done. The line creation unit 3 determines the effective range of the straight line shown by the formula (1) and the straight line shown by the formula (2) connecting the coordinates of the start point P0 and the end point P1 from the coordinates stored in the input data storage unit 2. Then, a line segment is created and y−y0 = [(y1−y0) / (x1-x0)] (x−x0) (1) x0 ≦ x ≦ x1, y0 ≦ y ≦ y1 .. (2) The result is stored in the output data storage unit 4. Display unit 5
Displays the data stored in the output data storage unit 4 on the display device 6 as a note arrow line L, as shown in FIG.

[0003]

However, in the conventional CAD system for creating the annotation arrow line,
There were the following issues. When the part to be assembled in the board outline KB and the note arrow line overlap with each other, it is necessary to avoid displaying the overlapping part of the note arrow line and the part in order to avoid making the part difficult to see. Therefore, (1) or ( It was complicated because the operation like 2) had to be performed. FIG.
(A)-(c) and FIG. 5 (a)-(b) are diagrams showing a problem in the case where a part and a note arrow line overlap each other. In these figures, KB is the outer shape of the board, and D1 and D2 are parts. (1) As shown in FIG. 4A, the starting point P0 and the ending point P1
Enter, and as shown in Fig. 2 (b), start point P0 and end point P1
A line segment L1 connecting the two is created. After that, as shown in FIG. 4C, both end points of the overlapping portion of the line segment L1 and the part D2 are input, the portions are deleted, and the line segment L1 is changed to the line segments L1-1 and L1.
Divide into 1-2. These line segments L1-1 and L1-2 are set as note arrow lines. (2) As shown in FIG. 5 (a), input a plurality of points P0, P0 ', P1', P1 so that the arrow lines of notes do not overlap the parts, and as shown in FIG. The annotation arrow line is divided into several lines such as a line segment L2-1 connecting P0 'and a line segment L2-2 connecting points P1 and P1', and each start point and end point are input.

[0004]

In order to solve the above-mentioned problems, a first aspect of the present invention is a CAD system of a board assembly drawing manufacturing apparatus for manufacturing an assembly drawing of a plurality of parts to be arranged on a board. Is equipped with. That is, an input unit for inputting the start point and the end point of the note arrow line, a line creation unit for creating a line segment connecting the start point and the end point, and all the parts that overlap the line segment do not overlap with the line segment. And a line cutting section that divides the line segment into a plurality of lines that do not overlap all parts based on the effective range. In the second invention, the line cutting unit of the first invention deletes each of the plurality of divided lines if the length is shorter than a predetermined length.

[0005]

According to the first aspect of the invention, since the CAD system of the board assembly drawing manufacturing apparatus is configured as described above, the line cutting unit connects the starting point and the ending point of the note arrow line created by the line creating unit. Cut the part that overlaps the line segment for all parts that overlap with the min. As a result, even when the line segment overlaps a plurality of parts, it is divided into a plurality of lines that do not overlap any part. Therefore, the above problem can be solved.

[0006]

1 is a block diagram of a CAD system of a substrate assembly drawing manufacturing apparatus showing an embodiment of the present invention, in which elements similar to those in FIG. 2 are designated by like reference characters. The CAD system of this board assembly drawing manufacturing apparatus is different from the conventional one, after the line creation unit 3 creates a line segment connecting the start point and the end point of the note arrow line, and then the component placement data 11 of a plurality of components to be assembled on the board is displayed. A line cutting part that calculates the effective range that does not overlap the line segment for all parts that overlap with that line segment and divides the line segment into multiple lines that do not overlap all parts based on this effective range 12 is provided and the data of a plurality of lines divided by the line cutting unit 12 is stored in the output data storage unit 4.
As shown in this figure, the CAD of this board assembly drawing manufacturing apparatus
The line cutting unit 12 provided in the system is connected to the line creation unit 3 and the output side of the component placement data 11. The output data storage unit 4 is connected to the output side of the line cutting unit 12. FIG. 6 is a flowchart showing a processing procedure of the CAD system of the board assembly drawing manufacturing apparatus of FIG. 7A to 7D are diagrams showing the processing contents of the CAD system of the board assembly drawing manufacturing apparatus of FIG. In the figure,
KB is the outer shape of the board, D1 and D2 are components, and A1 is a component placement escape area of the component D2. The operation of the CAD system of the board assembly drawing manufacturing apparatus in FIG. 1 will be described below with reference to these drawings.

Input unit 1 In the input unit 1, at step 20 in FIG.
As shown in (a), the coordinates of the starting point P0 (x0, y0) and the ending point P1 (x1, y1) of the note arrow line are input, and the starting point and the ending point are stored in the input data storage unit 2 such as a memory. Proceed to 21. In the line creation unit 3 step 21, the straight line from the starting point P0 shown in formula (1) to the ending point P1 and the effective range of the straight line shown in formula (2) are obtained as shown in FIG. P0
A line segment L1 connecting the end point P1 and the end point P1 is created, and the line segment L1 is output to the line cutting unit 12. Line cutting unit 12 First, from the component placement data 11 indicating the placement region of each component placed within the board outline KB, as shown in FIG. (xl, yl) · point R1 (xr, yr) is formed in the lower left / upper right coordinates of the rectangle, and the component placement escape area A1 is created, and the process proceeds to step 22. In step 22, it is determined whether or not there is an unchecked component placement escape area, and if there is, it proceeds to step 23, and if it does not, it proceeds to step 25. Step 2
In step 3, it is checked whether or not the component placement escape area and the line segment overlap. If they do not overlap, the process returns to step 22, and if they overlap, the process proceeds to step 24. In step 24, FIG.
As shown in (c), the intersections P0 '(x0', y0 ') and P1' (of the four line segments shown by equation (4) and the line segment L1 of the component placement escape area A1 shown by equation (3), P1 '( x1 ', y1') is obtained, and an effective range in which the line segment L1 represented by the equation (5) does not overlap the component arrangement escape area is obtained from this intersection.

Xl ≦ x ≦ xr and yl ≦ y ≦ yr (3) x = xl, x = xr, y = yl, y = yr (4) x0 ≦ x ≦ x0 ′ and x1 ′ ≦ x ≦ x1 (5) As a result, as shown in FIG. 7C, the line segment L1 connects the points P0 and P0 ′ to the line segment L1-1 and the line segment L1 connects the points P1 ′ and P1.
It will be divided into 1-2. Further, a common range of this effective range and the effective range obtained so far for the component disposition relief area overlapping the line segment is recalculated as a new effective range. As a result, the new effective range is the line segment L1.
Is divided into a range corresponding to a plurality of lines for dividing.
Then, when the re-obtained new effective range is smaller than the predetermined value, the effective range of that portion is deleted, and the new effective range is stored in the output data storage unit 6. Then, the process returns to step 22. In the display unit 7 step 25, the final effective range stored in the output data storage unit 6 is set as a note arrow line L in FIG.
As shown in (d), it is displayed on the display device 8 by the display unit 7. As described above, in this embodiment, the C of the board assembly drawing manufacturing apparatus is used.
Since the line cutting unit 12 is provided in the AD system, the note arrow line can be easily created, and there is an advantage that the manufacturing time of the board assembly drawing can be shortened because manual writing work is eliminated. Further, when the cut line becomes shorter than a predetermined length, the line is deleted, so that it is possible to prevent the note arrow line from being difficult to see.

[0009]

As described in detail above, the first and second
According to the invention described above, in the CAD system of the board assembly drawing manufacturing apparatus, all the parts that overlap the line segment connecting the start point and the end point of the note arrow line are cut at the overlapping portions, and a plurality of parts that do not overlap with the part are cut. Since the line cutting section for dividing the line into individual lines is provided, the note arrow line can be easily created, and the manual writing work is eliminated, so that the manufacturing time of the board assembly drawing can be shortened.

[Brief description of drawings]

FIG. 1 is a board assembly drawing manufacturing apparatus C showing an embodiment of the present invention.
It is a block diagram of an AD system.

FIG. 2 is a configuration diagram of a CAD system of a conventional board assembly drawing manufacturing apparatus.

FIG. 3 is a diagram showing the processing contents of FIG.

FIG. 4 is a diagram showing a conventional problem.

FIG. 5 is a diagram showing a conventional problem.

FIG. 6 is a flowchart of FIG.

FIG. 7 is a diagram showing the processing contents of FIG. 1.

[Explanation of symbols]

 1 Input Section 2 Input Data Storage Section 3 Line Creation Section 4 Output Data Storage Section 5 Display Section 6 Display Device 11 Parts Placement Data 12 Line Cutting Section

Claims (2)

[Claims] 1. In a CAD system of a board assembly drawing manufacturing apparatus for manufacturing an assembly drawing of a plurality of components arranged on a board, an input unit for inputting a start point and an end point of an annotation arrow line, and a line connecting the start point and the end point. A line creation unit that creates a segment, and obtains an effective range that does not overlap the line segment for all the parts that overlap with the line segment, and based on the effective range, divides the line segment into a plurality of parts that do not overlap with all the parts. A CAD system of a board assembly drawing manufacturing apparatus, comprising: a line cutting unit that divides into lines. 2. The line cutting unit deletes each line divided into a plurality of lines if the length thereof is shorter than a predetermined length.
CAD system of the described board assembly drawing manufacturing apparatus.