JPH0724543U - Printed board outline processing machine - Google Patents

Abstract

(57) [Summary] [Object] To provide a printed circuit board contour processing machine that automatically measures a pre-machined contour processing dimension by a CCD camera and an image processing device to automatically correct a tool diameter. [Structure] The table 1 moves in the X-axis direction, and the saddle 3 held by the column 2 moves in the Y-axis direction. The headstock 4 held by the saddle 3 moves in the Z-axis direction. The spindle 5 is held by the headstock 4. Also, saddle 3 is CC
Hold the D camera 9A. The NC controller 11 controls the measurement of the image processing device 9B, compares the dimension obtained by measurement with a design value, and calculates a machining error as outer shape machining trajectory data.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printed circuit board outer shape processing machine, and particularly when performing outer shape processing of a printed circuit board, automatically measures a preprocessed outer shape processing dimension, and performs processing such that a design value dimension is obtained for subsequent processing. The present invention relates to a printed circuit board outer shape processing machine having a measurement / correction function capable of automatically performing correction.

[0002]

[Prior art]

 Conventionally, as a printed circuit board outer shape processing machine of this type, there is Japanese Patent Application No. 5-124954 disclosed by the applicant of the present application. As shown in FIG. 5 and FIG. 6, this conventional technique includes a table 1 on which a work 10 is placed and which moves in the X-axis direction, a saddle 3 which is attached to a column 2 and moves in the Y-axis direction, and a saddle. It has a headstock 4 mounted on the headstock 3 and moving in the Z-axis direction, a spindle 5 mounted on the headstock 4, and a drill 6 held by the spindle 5. An NC controller 7 that controls the movement of the table 1, the saddle 3, and the headstock 4 is connected to the processing machine having these configurations. A CCD camera 9A for picking up an image of the work 10 is attached to the saddle 3, and the NC controller 7 uses the camera 9A to measure the outer dimensions of the work 10 placed on the table 1. Image processing apparatus 9B for

The NC controller 7 includes an input means 7A, a main controller 7B, a machining coordinate memory 7C, a machining parameter memory 7D, an image processing controller 7E, a machining calculator 7F, and a mechanism operation. It is composed of a control unit 7G. The input means 7A sends to the main control section 7B machining coordinate data 71 for designating movement coordinates on the XY plane of the spindle 5 held on the spindle stock 4 and machining parameters 72 which are machining conditions. The main controller 7B writes the processing target data 71 in the processing coordinate memory 7C and the processing parameter 72 in the processing parameter memory 7D.

The image processing control unit 7E reads the external dimension data on the surface of the work 10 read by the camera 9A from the image processing apparatus 9B and digitized, and the work 10 is detected based on a deviation amount from a preset reference position. The slope of the coordinates on the surface and the expansion / contraction coefficient 74 are calculated.

The machining operation unit 7F reads the machining coordinate data 71 from the machining coordinate memory 7C, corrects the machining coordinate data 71 with respect to the amount of displacement from the reference position, the inclination, and the expansion / contraction, and the machining parameter 72 from the machining parameter memory 7D. Read.

The mechanism operation control unit 7 G processes the work by instructing the control of the table 1, the saddle 3 and the headstock 4 from the corrected machining coordinate data 71. In the conventional device having such a configuration, the processing coordinate data of the drilling processing data is corrected by using the CCD camera 9A and the image processing device 9B.

By the way, in the conventional outer shape processing, after the outer shape processing, whether or not it is a regular dimension is measured with a caliper, or it is measured with a coordinate measuring machine or the like and corrected for the next processing. Data is being input to the processing machine. In the case of external shape machining, since the correction data only needs to correct the trajectory of the tool, it suffices to add / subtract the correction value to / from the tool diameter data.

[0008]

[Problems to be solved by the device]

 However, in the conventional printed board external shape processing machine, in order to accurately process the external dimensions, it is necessary to manually input the tool diameter correction to the NC controller, which is complicated. Wear of the tool diameter is one of the factors that cause an error in the external machining dimensions. Also, the tool diameter itself varies. Furthermore, in the case of cutting, etc., the cut-out member escapes inward, so the tool also makes a slight deflection toward the inside, and the internal dimension of the cut-out becomes smaller than the set dimension, and a machining error inevitably occurs. , High-precision outer shape processing was not possible.

This invention has been proposed in view of the problems of the prior art, and automatically reads the external machining dimension of the workpiece machined on the table surface, and automatically corrects the tool diameter for the next machining NC. Machining calculation is performed as the contour machining trajectory data of the controller, eliminating error in inputting tool compensation data and eliminating machining error, enabling highly precise contour machining, and simplification and automation of operation of the external machining machine. The purpose is to

[0010]

[Means for Solving the Problems]

 In order to achieve this object, in the present invention, an external dimension comparison part is added to the configuration of Japanese Patent Application No. 5-124954 described in the prior art, and the measured external dimension after machining is compared with the design value. Make it possible.

That is, the table 1 that moves in the X-axis direction, the saddle 3 that moves in the Y-axis direction, the headstock 4 that moves in the Z-axis direction, and the movement of the table 1, the saddle 3, and the headstock 4 are controlled. Image processing for measuring the outer dimensions of a camera 9A fixedly held by a saddle 3 and a work 10 placed on the table 1 using the camera 9A in a printed board outer shape processing machine having an NC controller 11. The NC controller 11 outputs the control information to the table 1, the saddle 3 and the headstock 4 by correcting the outer shape machining trajectory data of the work 10 based on the outer dimension measurement value from the image processing apparatus 9B. It is characterized in that it is configured to.

That is, specifically, the NC controller 11 includes an input unit 11A, a main control unit 11B, a processing coordinate memory 11C, a processing parameter memory 11D, an image processing control unit 11E, and a processing operation unit. 11F, a mechanism control unit 11G, and an external dimension comparison unit 11H, and the input unit 11A mainly stores machining coordinate data and machining parameters that specify movement coordinates on the XY plane of the spindle 5 held by the headstock 4. The processing coordinate memory 11C and the processing parameter 11D are respectively written via the control unit 11B, and the image processing control unit 11E reads the digitized external dimension data on the surface of the work 10 read by the camera 9A from the image processing apparatus 9B. Machining error is calculated by reading and comparing with the design value preset in the external dimension comparison unit 11H, and machining parameter memory 11 The tool radius correction data is calculated for the tool radius data input to D, and the machining calculation unit 11F reads the machining coordinate data from the machining coordinate memory 11C, and the outer diameter machining trajectory data is obtained from the tool radius correction data. The correction is performed, and the mechanism operation control unit 11G commands the control of the table 1, the saddle 3, and the headstock 4 from the corrected contour processing trajectory data to perform contour processing of the printed circuit board.

[0013]

[Action]

 According to the present invention, when measuring and correcting the dimension outside the visual field range of the CCD camera 9A, the CCD camera 9A is operated by NC, and the position coordinate information of the end face of the outer shape processing is obtained from the image processing device 9B, and the outer dimension is calculated. The comparison unit 11H compares the design value with the design value, and uses the difference as a tool radius correction to add / subtract to the tool radius correction value in the machining parameter memory 11D to obtain outer shape machining trajectory data.

Further, in the case of measuring and correcting the dimension within the field of view of the CCD camera 9A, the CCD camera 9A is operated NC at substantially the center of the measurement, and the external dimension between the external processing end faces is measured by the image processing device 9B. Then, the external dimension comparison unit 11H compares the design value with the design value, and the difference is added to or subtracted from the tool diameter correction value of the processing parameter 11D as the tool diameter correction to obtain the external processing locus data.

[0015]

【Example】

 Next, the construction of one embodiment of the printed board contour processing machine according to the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an explanatory view showing the entire printed circuit board outer shape processing machine. A table 1 on which a work 10 is placed and moves in the X-axis direction, and a saddle 3 attached to a column 2 and moved in the Y-axis direction. A headstock 4 attached to the saddle 3 and moving in the Z-axis direction, an NC controller 11 for controlling the movement of the table 1, the saddle 3 and the headstock 4, and a CCD camera 9A attached to the saddle 3. , NC controller 11 having an image processing device 9B connected thereto. The configuration of this invention is basically the same as that of the conventional contour processing machine shown in FIG. That is, except for the NC controller 11 and the outer shape machining tool 12, the configuration is the same as that of the conventional machining machine shown in FIG.

Next, a detailed configuration of the NC controller 11 will be described with reference to FIG. 2 is a block diagram of FIG. 1, and mainly shows the internal configuration of the NC controller 11. 11A is an input unit, 11B is a main control unit, 11C is a processing coordinate memory, 11D is a processing parameter memory, 11E is an image processing control unit, 11F is a processing calculation unit, and 11G is a mechanism operation control unit.

Next, the processing coordinate memory 11C and the processing parameter memory 11D will be described. Both the processing coordinate data memory 11C and the processing parameter memory 11D are input with data from the input means 11A. The processing coordinate data is an NC program for external processing, which is an NC program for operating the CCD camera 9A and the image processing device 9B together with external processing locus data for external processing on the work 10. The processing parameters include the tool diameter for external processing.

The main control unit 11B controls the components of the acquisition means 11A, the processing coordinate memory 11C, the processing parameter 11D, the processing calculation unit 11F, the mechanism control unit 11G, and the external dimension comparison unit 11H.

The image processing unit 11E controls the CCD camera 9A and the image processing device 9B to obtain the measured external dimension value of the workpiece 10.

The external dimension comparison unit 11H compares the external dimension measurement value of the image processing control unit 11E with the design value to calculate a processing error amount.

The machining operation unit 11F calculates the contour machining trajectory data from the contour machining trajectory data of the machining coordinate memory 11C, the contour machining tool diameter data of the machining parameter 11D, and the machining error difference obtained by the contour dimension comparing unit 11H. The tool diameter is corrected and a command is given to the mechanism operation control unit 11G.

As described above, in the present invention, the external dimension comparison unit 11H is provided between the image processing control unit 11E and the main control unit 11B, and the other configurations are almost the same as those shown in FIG. .

In the conventional example shown in FIG. 6, machining is performed based on data in which machining coordinate data for mere drilling is corrected by counting, whereas the NC controller 11 of the present invention uses a CCD camera 9 A and an image. From the data obtained from the processing device 9B, the external dimension comparison unit 11H calculates the tool diameter data in the processing parameter 11D as the tool diameter correction data as the external processing trajectory data for operating the external processing tool 12, and Process according to. Therefore, it becomes possible to automatically read the external dimensions of the machined workpiece 10 before the measurement, and to automatically correct the external machining locus data for the next machining so as to approach the design value.

Next, the operation of FIG. 2 will be described. The NC controller 11 processes the work 10 once. At this time, actual processing or trial processing may be used. Next, the CCD camera 9A and the image processing device 9B are operated to instruct that the processed external dimension measurement value be obtained. FIG. 3 is a diagram for explaining the outer shape machining on the work surface of FIG. 2, in which the outer dimension comparison unit 11H compares the outer dimension measurement value obtained by the measurement with the preprogrammed design value to determine the machining error. Calculate the minutes. In order to perform machining close to the design value according to FIG. 3, the machining calculation unit 11F processes machining error as outer diameter machining trajectory data for the next machining, as tool diameter correction data for outer diameter tool diameter data. Then, the mechanical operation control unit 11G is instructed.

Next, the operation of FIG. 2 will be described with reference to the flowchart of FIG. In step 13, it is determined on the program whether the measurement / correction processing is performed. If the measurement / correction processing is not performed, the process proceeds to step 21 of normal processing, and if the measurement / correction processing is performed, the process proceeds to step 14. In this step 14, outer shape processing without measurement / correction is performed. That is, it is processed once for measurement and correction.

In step 15, the CCD camera 9A and the image processing device 9B are operated. In step 16, the image processing control unit 11E obtains the external dimension measurement value. In step 17, the outer dimension comparison unit 11H compares the design error with the design value to calculate the processing error. In step 18, the machining error is halved for tool diameter correction, and the external machining tool diameter is added or subtracted to correct the external machining trajectory data.

In step 19, the next contour processing is performed based on the corrected contour processing trajectory data. In step 20, it is judged whether the measurement / correction processing is finished. That is, if the outer shape processing is completed on the entire surface of the work 10, the series of operations is completed. If the measurement / correction processing is not completed in step 20, the process returns to the previous stage of step 19.

In step 21, outer shape processing without measurement / correction is performed. In step 22, if the external machining is all finished, the operation is terminated, and if the external machining is not finished, the operation returns to the previous stage of step 21.

[0029]

[Effect of device]

 In this invention, the printed circuit board external processing machine is equipped with a CCD camera and an image processing device, and the external dimensions can be automatically measured. Since the design value and the external dimension measurement value are compared and the external shape processing locus is automatically corrected, Highly accurate outer shape machining with less machining error and close to the design value is possible.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a printed board outer shape processing machine according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of an NC controller 11 shown in FIG.

FIG. 3 is a diagram illustrating a machining locus on the work surface of FIG. 2.

FIG. 4 is a flow chart for explaining the operation of FIG.

FIG. 5 is a configuration diagram of a conventional NC processing machine.

6 is a block diagram showing a detailed configuration of an NC controller 7 shown in FIG.

[Explanation of symbols]

 1 Table 2 Column 3 Saddle 4 Headstock 5 Spindle 9A CCD Camera 9B Image Processing Device 11 NC Controller 11A Input Means 11B Main Control Unit 11C Machining Coordinate Memory 11D Machining Parameter Memory 11E Image Processing Control Unit 11F Machining Calculation Unit 11G Mechanism Operation Control Part 11H External Dimension Comparison Part 12 External Processing Tool

Claims (2)

[Scope of utility model registration request] 1. A table (1) moving in the X-axis direction, a saddle (3) moving in the Y-axis direction, a headstock (4) moving in the Z-axis direction, a table (1) and a saddle (3). ) And an NC controller (11) that controls the movement of the headstock (4), a camera (9A) fixed to the saddle (3) and a camera (9A) Workpiece placed on the table (1) using
The NC controller (11) is provided with an image processing device (9B) for measuring the external dimensions of (10), and the NC controller (11) uses the external dimension measurement value from the image processing device (9B) to perform the external machining trajectory of the workpiece (10). The table (1) and saddle (3) and the headstock are used for the control information with the corrected data.
A printed circuit board contour processing machine characterized by outputting to (4). 2. The NC controller (11) comprises an input means (11A),
Main controller (11B), machining coordinate memory (11C), machining parameter memory (11D), image processing controller (11E), machining calculator (11F), mechanism controller (11G), external shape Dimension comparison section
(11H) and the input means (11A) is a spindle held by the headstock (4).
The processing coordinate data and the processing parameters that specify the movement coordinates on the XY plane of (5) are written to the processing coordinate memory (11C) and the processing parameter (11D) via the main control unit (11B), respectively, and the image processing control unit ( 11E) is from the image processing device (9B) to the camera (9
The external dimension data on the surface of the work (10) read by A) is read and compared with the design value preset in the external dimension comparison section (11H) to calculate the machining error, and the machining parameter memory The tool radius compensation data is calculated for the tool radius data input to (11D), and the machining operation section (11F) reads the machining coordinate data from the machining coordinate memory (11C) and uses the tool radius compensation data to calculate the outer shape. The machining trajectory data is corrected, and the mechanism operation control unit (11G) uses the corrected contour machining trajectory data to correct the table (1) and saddle.
2. The printed board outer shape processing machine according to claim 1, wherein the outer shape processing of the printed board is performed by instructing control of the (3) and the headstock (4).