JPS58208608A - Method and device for automatically reading coordinate value - Google Patents

Abstract

PURPOSE:To facilitate the specifying work of the diameter of a hole mark, by applying a color to each hole mark on a drawing, and automatically reading the color of said hole mark and XY coordinates of the central point of the mark. CONSTITUTION:The same color is applied to hole marks having the same diameter in the hole marks on a drawing. The marks having the different diameters are distinguished by the difference in colors. Said hole mark is scanned by a scanner camera 22. The color of the hole mark is detected by a color separating device 26 and color detectors 28, 30, and 32 at the same time. The XY coordinate data of the central point of the hole mark is made to correspond to the signal of the color, and the data is filled in a data file memory 60. The color in the filed data of the hole mark is specified. Then, the data for the hole marks having the same diameter are consolidated, taken out of the data file memory 60, and sent to an output device 66.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for automatically reading the X-Y coordinate values of the center point of a hole mark.

The XY coordinate values of the center of, for example, a through-hole mark on the original printed circuit board on the table automatically read by the automatic coordinate reader are stored in the data file memory of the controller in scanning order. When specifying the hole diameter etc. for the desired through-hole mark, move the head of the automatic coordinate reader mounted on the ITV camera in the direction of the XY coordinate axes on the table by manually operating the switch on the full operation console. Align the center of the index displayed on the cathode ray tube of the monitor TV on the operation console with the desired through-hole mark, press the record switch to input the XY coordinate values of the head at this time into the controller, and specify the desired through-hole mark. Data such as the hole diameter of this through-hole mark is input into the data file memory of the controller by keyboard operation. However, although it is possible to easily control the movement of the head near a desired through-hole mark, when the center of the index is accurately aligned with the center of the through-hole, there is a risk that the head may move too far or be too close to the center of the through-hole. However, positioning the index by manual switch operation was extremely difficult and time consuming.

An object of the present invention is to enable the hole diameter of the reading mark to be specified without performing the positioning work of the above-mentioned index.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 2 denotes the body of the coordinate reader MJl Iso, on which a table 4 made of a transparent plate is supported.

X rails 6.8 are arranged on both sides of the table 4, and
>1' cursors 10 and 12 are attached to the L/-rules 6 and 8 and can be moved freely. 14 is the X cursor 10°12
A Y rail is installed between them, and a carrier 16 is movably attached to it; 18 is a head attached to the carrier 16, and as shown in FIG. 2, a line scanner camera 22 is attached to the casing 20.
and a color detection device 24 are attached.

The color detection device 24 includes a color separation device 26 and a detector 2.
8, 30, and 32. A cylindrical body 34 is fixed to the casing 20, and a lens tube 36 in which an imaging lens system is disposed is fixed to this cylindrical body. 38 is a holder fixed to the casing 20, and a no.
A humirar 40 is attached. The line scanner camera 22 has a large number of minute photodetecting elements arranged in a line.
The light detecting section 42 has a light detecting section 42. The light image of the pattern on the printed circuit board original film 44 on the table 4 enters the photodetector 42 through the imaging lens system in the lens barrel 36 and the half mirror 40, and is converted into a digitized signal. The light image of the pattern is reflected by the nof mirror 4'0, and this reflected light enters the color detection device 24.

The light image incident on the color detection device 24 is separated into electrical signals of green, red, and blue colors by the color separation device 26.

In addition to this colored electrical signal, the green electrical signal is detected by the line detector 28, the red electrical signal is detected by the red detector 30,
The blue electric signal is configured to be detected by the blue detector 32. Said X cursor 10.12 and carrier 16 are connected to X rail 6.8 and X rail 14 by controller 46.
The movement of the X cursor 10.12 and the carrier 16 causes the light detection section 42 of the scanner camera 22 to scan the entire surface of the film 44 on the table 4.

The amount of movement of the X cursor 10.12 along the X rail 6.8 and the amount of movement of the carrier 16 along the X rail 14 are
It is configured to be counted by the Y current value counter 48.

60 is a read data file memory, 62 is a center point calculation logic circuit, 64 is a central processing unit, and 66 is an output device, which are connected as shown.

Next, the operation of the non-embodiment will be explained.

Transparent film 44 should be read on a black background.
The hole marks 68 are colored in advance so that marks having a common hole diameter have the same color. The three colors of green, red, and blue are desirable, but other colors are also acceptable. For example, a mixed color of green and white, a mixed color of red and white, a mixed color of blue and white, etc. can be used. When the controller 46 controls the movement of the head 18 and the scanner camera 22 scans the film 44 at a predetermined pitch, the digitized signal from the detector 42 is input to the sense data register 50 . register 50
The contents of are sent to the hole determination logic circuit 52, which determines whether the mark scanned by the scanner camera 22 is the hole mark 68 or not.

The center point calculation logic circuit 62 calculates the XY coordinate values of the center point of the hole mark 68 based on the scan data of the sense stator register 50, the count value of the counter 48, and the large judgment signal of the hole judgment logic circuit 52.

On the other hand, the color of the hole mark 68 is separated into electric signals of green, red, and blue by the color separation device 26, and when the color of the hole mark 68 is red or a color containing red, the detector 30 sends a detection signal "1'', and this detection signal is input to the register 56. The output signal of the register 56 and the data XY of the center point calculation logic circuit 62 are input to the color-based data file memory 6o by the data storage command pulse of the hole judgment logic circuit 52.

At this time, the output signal of the register 56 is a red flag signal R according to the flag set in the data file memory 60.
The flag signal R is combined with the data XYIC and filed in the data file memory 60. The data read sequentially and filed in the data file memory 60 in this way is sent to the output device 66 in which the hole mark data of the same color is grouped together by the control command of the central processing unit 64 by specifying all the flags. perforated.

Based on the color flag information inputted to this tape, for example, a red flag signal is a drill A for drilling a hole with a diameter of 1 m.
I, green "flag signal indicates drill shop 2 for drilling diameter 1.5s+g holes, blue plug signal indicates drill shop 3 for drilling diameter 2tII holes, etc. Specify the drill number and use the tape all numerically controlled drilling machine. Then, according to the commands of the input tape, the drill of the numerically controlled drilling machine is selected, the position of the drill is controlled, and a through hole is drilled at a predetermined location on the printed circuit board.

When adding colors to hole marks, there is no problem if the colors are red, green, and blue, for example kumquat, but if you add a peach color to the hole mark, for example, the hole mark with peach color To retrieve the data, the operator needs to know with what flag the pink color is filed in the data file memory 60.

In this case, the flag generating circuit (
- "1 (not shown) is connected so that the flag of the color detected by the color detection device is displayed on the display device (not shown). For pink color, flag R is displayed because red is extracted and decomposed. Note that when only red, blue, and green colors are used, the flag generating circuit described above does not need to be provided.

In the above embodiment, the three color flags of green, red, and blue are made to correspond to all specific hole diameters, but it is also possible to make a combination of the three color flags correspond to a specific hole diameter. In this case, the three-color detection signals can be used as flags for eight types of hole diameters Σ.

For example, when a plurality of hole marks with the same hole diameter are colored purple, when the color detection device 24 detects this color, the color separation device 26 separates the purple into red and blue, and thereby the red detector 30 The blue detector 32 outputs a signal of "1". This signal of "1η" is input to the file data memory 60 along with the coordinate data XY of the purple through-hole mark via registers 56 and 58.Register 56.
The output signal of 58 is converted into a red flag signal R and a blue flag signal B, and the flags R and B are filed in the data file memo IJ 60 along with the corresponding through hole mark notators XY. The XY data with the R and B flags in the data file memory 6° can be collectively output to the output device 66 by specifying the flag B.
Data can be sent out. The operator is configured to be able to know that the arbitrarily selected purple flag is RB by displaying it on a flag signal display device (not shown) based on the output signal of the color separation device 26. .

Next, another embodiment will be described with reference to FIG.

When the film 44 is scanned by the scan camera 22 and the hole determination logic circuit 52 determines that the mark drawn on the film 44 is a through-hole mark, the circuit 52 outputs all pulse signals of 〃1'' and performs an AND 70 is supplied to the gates 70, 72, and 74. As a result, the AND gate 70 becomes conductive, and the XY coordinate values of the center point of the mark in the center point calculation logic circuit 62 are set to the AND gate 70.
0 to the green file memory 76 and filed therein. Similarly, XY of the center point of the red mark
The coordinate values are filed in the red file memory 78, and the XY coordinate values of the center point of the blue marker are filed in the blue file memory 80. The contents of file memory 76, 78, 80 are as follows:
The output devices 6 are individually controlled by the central processing unit 64.
6, and here the data of the hole marks of the same color are collectively outputted onto a paper tape or the like.

Next, another embodiment will be described with reference to FIG.

Reference numeral 90 denotes a green density determination circuit which detects the green color signal from the color separation device 26 and discriminates and determines the density of this color signal into three levels.

The green density determination circuit 90 outputs a G1 flag signal when the detected green density is high, and outputs a G1 flag signal when the detected green density is medium.
Outputs the flag signal of , and if it is weak, outputs the flag signal of Gs?
is configured to print. In addition, this concentration judgment circuit 9
The density determination of 0 can be increased or decreased in all steps as necessary. The red density determination circuit 92 is configured to output three levels of flag signals, namely R, J, and 3, depending on the red density determination result. The blue density determination circuit 94 generates a three-stage flag signal Bl depending on the blue density determination result.

It is configured to output Bs and Bs'r.

96.98.100 is the density determination circuit 90°92.
This register stores and outputs each output of 94. The other configurations are the same as the block circuit diagram shown in FIG.

Above flag GI IO21G8, R, IR, lR
By combining the color detection flag signals of 131B, , B, and Bs, it is possible to use them as 512 types of hole diameter discrimination signals. It is assumed that a desired color is applied to a hole mark that shares a plurality of hole diameters, and that this color is composed of, for example, a combination of dark green, medium-density red, light blue, and other colors. Color detection device 24 detects the color of the hole mark above.
If detected, the green density determination circuit 90 outputs a G flag signal, the red density determination circuit 92 outputs an R1 flag signal, and the blue density determination circuit 94 outputs all Bs flag signals. The flag signals a, ,'R+, ,B are input to the file data memory 60 along with the coordinate data XY of a specific through-hole mark via registers 96, 98, and 100. Among the data input to the data file memory 60, G.

The XY coordinate data of the center point of the hole mark with the flags R, , R, can be collectively output from the memory 60 to the output device by specifying the flags G+, Ri, and Bs'c. The subsequent data processing is the same as the method described in the first embodiment.

As described above, the present invention colors the hole marks on the drawing and automatically reads the color of the hole marks and the XY coordinate values of the center point, making it easy to specify the hole diameter of the hole marks. There are effects that can be achieved.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention, in which Fig. 1 is an external view, Fig. 2 is an explanatory drawing of the head, Fig. 3 is a schematic diagram of the original film, Fig. 4 is an explanatory drawing, and Fig. 5 is a block diagram. Circuit explanatory diagram, No. 6
The figure is a block circuit explanatory diagram showing another embodiment, and FIG. 7 is a block circuit explanatory diagram showing another embodiment. 2... Aircraft, 4... Table, 6.8... X rail, 10.12... X cursor, 14... Y rail, 16... Carrier, 18... Head, 22 ...Line scan camera, 24...Color detection device, 26.
...color separation device, 28.30.32...detector,
34... Cylindrical body, 36... Lens barrel, 38... Holder, 4o... Half mirror 142... Light detection section,
44...Film, 46...Controller, 48.
... Counter, 50 ... Sense data register, 52
... Hole judgment circuit, 60.76°78.80... Data file memory, 66... Output device. Patent applicant: Muto Kogyo Co., Ltd. Agency - ゛2 Figure 2 Figure 4 Figure 2

Claims (1)

[Claims] 1. Control the relative movement of all scanner cameras along the XY coordinate axis plane on the table, scan the scanner camera over the entire surface of the drawing on the table, and scan a plurality of hole marks on the drawing. In an automatic coordinate reading method that automatically reads the XY coordinate values of each center point, among the hole marks, hole marks of the same diameter are given the same color, and hole marks of other diameters have a different color. When the hole mark is scanned by a scanner camera, the color of the hole mark is detected, and all signals of the color are added to the XY coordinate data of the center point of the hole mark to convert the data into data. By filing a file in the file memory and specializing the color in this filed hole mark data, data for hole marks of the same diameter are retrieved from the data file memory at once, and a desired hole diameter signal is specified for this data. The automatic coordinate reading method is characterized by: 2. A scanner camera is attached to a head that can move freely in any direction along the x-y coordinate axis plane on the table with respect to the table, and a controller automatically controls the head in a predetermined direction relative to the table. Then, by moving the head, the scanner camera is scanned over the entire surface of the drawing on the table, and the X of the center point of the hole mark on the drawing is
In a device that automatically reads the Y value,
A color detection device 24 provided in the head for detecting the color of the scanning surface on the table 4 of the scanner camera 22; data file memories 60, 76, 78, and 80 that are configured to file files in correspondence with the color signals of the hole marks based on the detection signals of the
An automatic coordinate reading device comprising a cutting device 66 for distinguishing hole mark data filed in the data file memory by color and collectively outputting data of hole marks of the same color.