JP2872188B2 - Counterbore processing system for mounting board test jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to the manufacture of a test jig for a printed circuit board on which components are mounted. In particular, the present invention relates to a mounting board test jig counterbore processing system that defines specifications of a counterbore processing area provided on a test jig in order to prevent interference between components mounted on a substrate and the test jig.

[0002]

2. Description of the Related Art An in-circuit test (I-circuit test) is one of the test methods for a mounted board in which components are mounted on a printed board.
n Circuit Test) method. In this test, the leads of the components soldered to the printed circuit board and the solder connectivity of the mounting pads and the quality of the inside of the components are determined. FIG. 9 is a diagram illustrating the in-circuit test method. FIG. 10 is a diagram illustrating a test jig (ICT jig) used in the in-circuit test. FIG. 9 shows the mounting area, which is a contact area on the mounting board 16 in order to determine the solderability of the mounting board 16 in which the leads 14 of the component 12 and the mounting pads 11 are solder-connected to the printed board 15 and the quality of the inside of the component. This shows an in-circuit test method in which a probe 6 is brought into direct contact with a pad 11 or a test pad 13 to perform a test. FIG.
Shows the structure of the test jig used in the in-circuit test. In order to bring the probe 6 into contact with the contact area (mounting pad 11, test pad 13) on the mounting board 16, the entire jig base 7 holding the probe 6 needs to be pushed down and brought close to the mounting board 16. is there. At this time, a counterbore processing area 9 is provided on the jig base as shown in FIG. 10 so as to prevent the jig base 7 from interfering with the component 12, and a test jig is manufactured.

[0003] As a conventional example of processing for determining and changing a probe position of a jig when manufacturing a test jig, a conventional example of "wiring inspection jig manufacturing data" disclosed in JP-A-62-280658 is disclosed. There is a "creating device". In this conventional example, the position of the pin is shifted when the component and the probe pin interfere with each other, but the jig is hollowed out.
No point is mentioned.

[0004]

As described above, the test jig needs to provide a counterbored area in accordance with the external shape and height of the component so that the component on the mounting board does not interfere with the jig base. . Conventionally, each size (range, depth) of the counterbore processing area is obtained by measuring the actual mounting board and using the measured size of the mounting board. For that reason,
The production of the test jig cannot be started until after the mounting board is obtained, and there is a problem that the test cannot be applied early. In addition, there is an apparatus that creates data for manufacturing a wiring inspection jig using original image data of a printed wiring board, but there is no apparatus that considers counterboring processing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has been made in consideration of a test for testing a mounting board before the mounting board is completed, that is, before the mounting board is completed. An object of the present invention is to obtain a mounting board test jig counterbore processing system that can start manufacturing a jig and can apply a test at an early stage from the beginning of production of a mounting board. It is another object of the present invention to obtain a mounting board test jig counterbore processing system that generates counterbore information defining a counterbore processing area of a test jig using board design data for manufacturing a mounting board. It is another object of the present invention to obtain a counterboring processing system for a mounting board test jig that verifies generated counterbore information and probe position data.

[0006]

SUMMARY OF THE INVENTION A mounting board test jig counterbore processing system according to the present invention is a test jig for testing a board on which a component is mounted, for preventing interference between the test jig and the component. In a mounting board test jig counterbore processing system for providing a counterbore processing area which is an area for performing counterbore processing, board design data for manufacturing the board, probe position data defining a probe position with respect to the board, and the counterbore An input section for inputting margin data defining a margin of a processing area, and a specification of a counterbore processing area to be applied to the test jig based on the board design data, the probe position data, and the margin data input by the input section. And a counterbore machining data generator for generating and outputting counterbore machining data that defines .

The board design data is component placement data defining the placement of components mounted on the board, component shape data defining the shape of the component, and component height data defining the height of the component. The counterbore processing data generation unit calculates X data and Y data indicating the position of the counterbore processing area on the test jig from the component placement data and the component shape data, and calculates the counterbore processing area from the component height data. Z data indicating the depth of
A counterbore processing data is generated by adding a margin to the calculated X, Y, Z data using the margin data.

The mounting board test jig counterbore processing system further includes a counterbore processing area and a probe position using the probe position data input by the input section and the counterbore processing data generated by the counterbore processing data generator. And a counterbore processing data verification unit that outputs the verification result.

[0009] The counterbore processing data generating section is characterized by changing and outputting the counterbore processing data based on the verification result of the counterbore processing data verification section.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a mounting board test jig counterbore processing system (hereinafter, also referred to as a jig counterbore processing system) of the present invention that generates counterbore processing data. As shown in FIG. 1, a mounting board test jig counterbore processing system according to the present invention includes board design data 1 for manufacturing a board and probe position information for disposing a probe on a jig base with respect to the board. Input section 401 for inputting probe position data 2 for defining a counterbore and margin data 3 for defining a margin of a counterbore processing area for performing a counterbore processing on a test jig, and counterbore processing data 5 based on these input data. And a counterbore processing data generation unit 403 that generates Further, the counterbore processing data verification unit 405 verifies the counterbore processing data 5 generated by the counterbore processing data generation unit 403 using the data input by the input unit 401. The board design data 1 is component placement data that defines the position where the component is placed on the board, component shape data that defines the external shape of the component, and component height data that defines the height of the component.

Here, the basic concept of counterbore processing data generation of the mounting board test jig counterbore processing system of the present invention will be described. In the mounting board test jig counterbore processing system of the present invention, as shown in FIG. 10, the correspondence between the shape of the test jig and the components mounted on the board is the same as when the conventional mounting board was actually measured. Then, the range (X, Y data) of the counterbore processing area 9 on the jig base is calculated using the component arrangement data and the component shape data of the board design data 1. The height data (Z data) of the counterbore processing area 9 is calculated from the component height data of the board design data 1. At this time, based on the margin data 3, a predetermined margin is added to the X, Y, and Z data of the counterbore processing area 9 to generate the counterbore processing data 5. This is the basic concept of counterbore processing data generation.

The above basic idea does not consider the position information of the probe 6. Problems that may occur in this case will be described with reference to FIGS. 2A to 2C. FIGS. 2A to 2C are diagrams showing the positional relationship between the probe of the test jig and the counterboring area. As described above, the position information of the probe 6 is not considered in the above basic concept. Therefore, as shown in FIG. 2A, the counterbore processing data 5 may be generated in a state where the probe wall thickness 8 required for fixing the probe 6 to the jig base 7 cannot be secured. In the worst case, as shown in FIG. 2B, the probe is completely included in the counterbore processing area, and there is no probe wall thickness 8 at all. In this case, in consideration of the generated counterbore machining data, the position of the probe 6, and the necessary probe wall thickness 8, the counterbore machining is performed so that the necessary probe wall thickness 8 is secured as shown in FIG. It is necessary to perform a process of changing the area 9 and generate the counterbored processed data 5 after the change.

Regarding the change of the counterbore processing area, FIG.
This will be described with reference to FIG. FIG. 3A and FIG. 3B are views showing a change image of the counterbore processing area 9. FIG. 3A shows the counterbore machining area 9 calculated using the component arrangement data and the component shape data of the board design data 1, and FIG. 3B shows the counterbore machining area 9 shown in FIG. On the other hand, the position of the probe 6 and the probe wall thickness 8
The counterbore processing area 9 has been changed to increase the value of the minimum Y coordinate in consideration of. In FIG. 3A, there is a portion where the counterbore processing area 9 and the probe wall thickness 8 overlap, and the probe wall thickness 8 for fixing the probe 6 to the jig base 7 cannot be secured as it is. Therefore, as shown in FIG. 3B, the counterbore processing area 9 is changed to be small so that the probe wall thickness 8 can be secured. In this case, the minimum Y coordinate of the counterbore processing area 9 is changed to the maximum Y coordinate of the probe wall thickness 8, and the maximum X coordinate of the counterbore processing area 9 is changed to the minimum X coordinate of the probe wall thickness 8, respectively. 5 is generated.

The case where the counterbore processing area cannot be changed will be described with reference to FIGS. 4 (c) and 4 (d). As described above, when the counterbore processing area 9 and the probe wall thickness 8 overlap, the X coordinate of the counterbore processing area 9 and Y
The coordinate value is changed, but at this time, as shown in FIGS. 4C and 4D, the counterbore processing area 9 may not be changed. FIG. 4C shows the counterbore processing area 9 calculated using the component arrangement data and the component shape data of the board design data 1, and there is a portion overlapping the probe wall thickness 8. FIG. 4D shows the counterbore processing area 9 changed from the counterbore processing area 9 shown in FIG. 4C in consideration of the position of the probe 6. in this case,
The changed counterbore processing area 9 becomes an area smaller than the component shape 10, and a portion that interferes with the component 12 and the lead 14 (not shown) occurs. In such a case, the counterbore processing area 9 is not changed, and a change prohibition message or the like is output from the system to alert the operator (in this case, the operator changes the position of the probe 6 or By changing the type 6, the probe wall thickness 8 can be secured. As a type of the probe used for the ICT jig, for example, a probe diameter of 1.2
7 mm / 1.91 mm / 2.54 mm. Furthermore, for each diameter, the probe tip shape is a Kenyama type,
There are a crown type and a mortar type. The probe wall thickness required to attach to the jig base differs depending on the type of these probes.

Next, the processing of the counterboring processing system for a mounting board test jig of the present invention will be described with reference to a flowchart. FIG. 5 and FIG. 6 are flowcharts of the processing of the counterboring processing system for a mounting board test jig according to the present invention. First, in a data reading process (S17), the input unit 401 reads each data of board design data (component placement data, component outline data, component height data), probe position data, and margin data. Each data input by the input unit 401 is processed by the counterbore processing data generation unit 403. In the probe wall thickness area calculation processing (S18), the counterbore processing data generation unit 403 converts the probe 6 into the jig base 7 based on the previously read probe position data and margin data.
Are determined as (minimum X coordinate, minimum Y coordinate) and (maximum X coordinate, maximum Y coordinate). Next, in the counterbore processing data (X, Y) calculation processing (S19), the component outer area is determined as (minimum X coordinate, minimum Y coordinate) and (maximum X coordinate, maximum Y coordinate) from the component placement data and the component shape data. Then, a counterbore machining area obtained by adding a certain margin from the margin data to the obtained component outer area is obtained as (minimum X coordinate, minimum Y coordinate) and (maximum X coordinate, maximum Y coordinate).

Next, in the overlapping check processing (S20) of the probe wall thickness area and the counterboring processing area, each X coordinate and each Y coordinate described above are compared to check whether or not there is an overlapping area. Select the process. The comparison of each X coordinate and each Y coordinate is four points in the area of the probe wall thickness: (minimum X coordinate, minimum Y coordinate), (minimum X coordinate, maximum Y coordinate), (maximum X coordinate, maximum Y coordinate) , (Maximum X coordinate, minimum Y coordinate) are not included in the counterbore processing area. This processing is performed by the counterbore processing data verification unit 405.
It is performed by

If no duplication has occurred, the counterbore processing data generation unit 403 proceeds to the counterbore processing data (Z) calculation processing (S21), and generates the counterbore processing height data from the component height data and the margin data. calculate. After that, the counterbore processing data output processing (S22) outputs the counterbore processing data (X, Y, Z).

If it is confirmed that duplication has occurred,
In the overlap area determination processing (S23), it is determined which part of the counterbore processing area has an overlap. An example of the determination method will be described with reference to FIGS. 7A to 7D. The counterbore processing area 9 is divided into four equal parts, and small areas I to IV are considered. It is determined at which part of the small areas I to IV the area of the probe wall thickness 8 overlaps. In FIG. 7A, it is included in the small area I. 7 (b) and 7
(C) and FIG. 7 (d) show small areas II, III,
Included in IV. Next, in the determination process of the change target point (S24), the change area 2 of the counterboring processing area is changed.
9. The change point 30 and the change reference point 31 are calculated. In the case of FIG. 7A, the probe wall thickness 8
, The change area 29 of the counterbore processing area 9 is I, and the change point 30 is (maximum X coordinate, maximum Y coordinate) of the counterbore processing area 9. The change reference point 31 at that time is (minimum X coordinate, minimum Y coordinate) of the probe wall thickness area. Similarly, FIG.
In each case of (b) to FIG. 7 (d), a change area 29, a change point 30, and a change reference point 31 of the counterboring processing area are obtained.

After obtaining the change point 30, first, in the X-axis direction change process (S25), the X-axis coordinate of the change point 30 in the counterbore processing area 9 is changed to the X coordinate of the change reference point 31, and A counterbore processing area 9 is determined.
FIG. 8A shows a change image in the case of FIG. 7A, in which the maximum X coordinate of the counterbore processing area 9 is changed to the minimum X coordinate of the probe wall thickness 8. After the change, in the check process of the component outline and the counterbore processing area (S26a), it is checked that the entire component outline is included in the counterbore processing area. As a result of the check in S26a, if the entire part outer shape is included in the counterbore processing area, the process proceeds to the counterbore processing data (Z) calculation processing (S21) and the counterbore processing data output processing (S22) to generate the counterbore processing data. A counterbore processing data is created and output by the unit 403.

If the counterbored area becomes smaller than the external shape of the component when the change in the X-axis direction is performed,
The check result at 26a is No. In this case, X
In the Y-axis direction change processing (S27), the Y-axis coordinate of the change point 30 of the counterbore processing area 9 is changed to the Y of the change reference point 31 in the original counterbore processing area, not in the counterbore processing area whose axis direction has been changed. The coordinates are changed, and a new counterbore processing area 9 is obtained. FIG. 8B shows a change image in the case of FIG.
Is changed to the minimum Y coordinate of the probe wall thickness 8. After the change, in the check process of the component outline and the counterbore processing area (S26b), it is checked that all the component outlines are included in the counterbore processing area. As a result of the check in S26b, if all the component outlines are included in the counterbore processing area, the counterbore processing data (Z) calculation processing (S2
1) The process proceeds to the counterbore processing data output process (S22), and the counterbore processing data generation unit 403 creates and outputs counterbore processing data.

If the counterbored area becomes smaller than the component outer shape even after the change in the Y-axis direction, the check result in S26b becomes No. In this case, in the error message output processing (S28), an error message is output to warn the operator to warn that the change of the counterboring processing area 9 is impossible.

As described above, according to this embodiment,
In the manufacture of mounting board test jigs, board design data,
From the board assembly data and the test probe position data of the jig, counterbore processing data of the jig according to the type of the mounted component can be generated without the need for an actual mounting board. In addition, it is possible to verify the counterbore processing area and the probe position before manufacturing the jig, and to find a defective portion.

[0023]

According to the present invention, the production of a test jig for testing the mounted substrate can be started from the time when the mounted substrate does not exist, that is, before the mounted substrate is completed. The test can be applied early from the beginning.

Further, counterboring data defining a counterboring area of a test jig can be generated using board design data for manufacturing a mounting board.

Further, the generated counterbore processing data and probe position data can be verified in advance before manufacturing the jig.

Further, it is possible to change the counterbore machining data generated based on the verification result and output optimized counterbore machining data.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a counterboring processing system for a mounting board test jig according to the present invention.

FIG. 2 is a diagram showing a positional relationship between a counterbore processing area and a probe according to the present invention.

FIG. 3 is a view showing an example of a counterbore processing area change image according to the present invention.

FIG. 4 is a diagram showing an image in which a counterboring processing area cannot be changed according to the present invention;

FIG. 5 is a flowchart of a process performed by a counterboring processing system for a mounting board test jig according to the present invention.

FIG. 6 is a flowchart of a process performed by the counterboring processing system for a mounting board test jig according to the present invention.

FIG. 7 is a diagram illustrating a counterboring processing area overlap determination process according to the present invention;

FIG. 8 is a diagram showing a counterboring processing area changing process according to the present invention.

FIG. 9 is a diagram illustrating an in-circuit test method.

FIG. 10 is a view showing a structure of an in-circuit test jig.

[Explanation of symbols]

1 board design data, 2 probe position data, 3 margin data, 4 mounting board test jig counterbore processing system, 5 counterbore processing data, 6 probes, 7 jig base, 8 probe wall thickness, 9 counterbore processing area, 1
0 parts shape, 11 mounting pads, 12 parts, 1
3 test pads, 14 leads, 15 printed circuit boards,
16 mounting board, 29 change area, 30 change point, 31 change reference point, 401 input section, 403
Counterbore data generation unit, 405 Counterbore data verification unit.

Claims (4)

(57) [Claims] 1. A mounting board test jig for providing a counterbore processing area in a test jig for testing a substrate on which a component is mounted, in which a counterboring process for preventing interference between the test jig and the component is performed. In the counterbore processing system, an input unit for inputting board design data for manufacturing the substrate, probe position data defining a position of a probe with respect to the substrate, and margin data defining a margin of the counterbore processing area, A counterbore processing data generation unit that generates and outputs counterbore processing data that defines the specifications of a counterbore processing area to be applied to the test jig based on the board design data, the probe position data, and the margin data input by the input unit. And a counterboring processing system for mounting board test jigs. 2. The board design data includes component placement data defining the placement of components mounted on the board, component shape data defining the shape of the component, and component height data defining the height of the component. The counterbore processing data generation unit calculates X data and Y data indicating the position of the counterbore processing area on the test jig from the component placement data and the component shape data, and performs counterbore from the component height data. Z indicating the depth of the machining area
2. The counterboring processing system according to claim 1, wherein data is calculated, and a counterbore processing data is generated by adding a margin to the calculated X, Y, Z data using the margin data. . 3. The counterbore processing system according to claim 1, further comprising a counterbore processing area using the probe position data input by the input unit and a counterbore processing data generated by the counterbore data generation unit. The counterboring processing system according to claim 1, further comprising a counterbore processing data verification unit that verifies a position and outputs a verification result. 4. The counterbore processing jig according to claim 3, wherein the counterbore processing data generation unit changes and outputs the counterbore processing data based on the verification result of the counterbore processing data verification unit. Processing system.