JP4515356B2 - Automatic design program and recording medium - Google Patents

Description

  The present invention relates to an automatic design program for designing a machining pattern and a recording medium storing the automatic design program.

  When forming a structure in which a large number of wiring patterns, through holes, and the like are formed on a substrate, such as a wiring substrate, various jigs for assisting processing may be used. For example, when a solder resist layer or the like is formed on a wiring board by coating, the liquid solder resist wraps around the back surface through through holes (through holes) formed in the substrate. In order to prevent soiling, a jig provided with a processed hole may be used (see, for example, Patent Document 1 and Patent Document 2).

  FIG. 1A is a perspective view schematically showing a jig 10 used when forming a wiring board, and FIG. 1B is a view showing a cross section taken along line AA of FIG. 1A. Referring to FIGS. 1A and 1B, the jig 10 includes a flat substrate 11, a hole 12 formed in the substrate 11, and the substrate 11 formed on the bottom surface of the hole 12. It has a structure having a through hole 13 therethrough.

  FIG. 1C is a diagram schematically illustrating an example of a usage method when the jig 10 is used in a process of forming a wiring board. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted.

  Referring to FIG. 1, when the solder resist layer 22 is formed on the surface of the wiring substrate 21, the jig 10 is installed and used on the back surface of the wiring substrate 21. For example, when applying a liquid solder resist, the solder resist may wrap around the back surface of the wiring board through the through hole 23 formed in the wiring board 21.

Therefore, by arranging the jig 10 on the back surface of the wiring board 21 so that the hole 12 corresponds to the through hole 23, the back surface of the wiring board is prevented from being stained with the solder resist. can do. Further, in this case, if the through hole 13 is formed in the bottom surface of the hole portion 12, it is possible to escape the gas staying in the hole portion 12, which is preferable.
Japanese Patent Laid-Open No. 8-78844 Japanese Patent Application Laid-Open No. 11-342584

  However, when manufacturing the jig 10 described above, various manufacturing problems may occur. These problems will be described below using a plan view of the jig 10.

  FIG. 2 is a plan view of the jig 10 shown in FIGS. 1A to 1C. However, in the figure, the same reference numerals are given to the parts described above, and the description will be omitted.

  Referring to FIG. 2, for example, a plurality of hole portions 12 are provided corresponding to through holes formed in the wiring board, and a plurality of through holes 13 are also provided corresponding to the hole portions 12, respectively. However, such hole processing takes time, and particularly when the number of hole portions increases, there is a problem that it takes time to process the jig.

  For example, as shown in the R1 and R2 parts in the figure, depending on the distance between the hole part, the thickness of the remaining part of the process may be reduced, or the pattern may be formed at an acute angle. It was. In this way, if a thin part or a part formed at an acute angle occurs, breakage such as chipping is likely to occur when handling a jig, and there is a problem in the formation of the wiring board due to the chipped part. There was a case.

  In addition, when trying to perform such processing that does not leave a thin shape, the processing pattern becomes complicated, and it takes time to create the processing pattern.

  Therefore, an object of the present invention is to provide a new and useful machining pattern automatic design program that solves the above problems, and a recording medium storing the automatic design program.

  A specific problem of the present invention is to make it possible to easily design a processing pattern that is easy to process and has a stable shape.

According to a first aspect of the present invention, there is provided an automatic design program for causing a computer to execute a design for forming a machining pattern for cutting a surface to be machined by a combination of a machining circle and a machining straight line. The first process for patterning a plurality of provisional machining circles with a diameter D1 of D1 = (required machining hole diameter D + allowance width A) and a plurality of the central coordinates, , W = (the tool diameter d used for machining + the margin width A) formed by the second process for patterning the temporary machining straight line, the temporary machining circle formed by the first process, and the second process. of been the temporary working straight line, that a third process for forming a temporary working area with a line the outside of the temporary working area, is offset inwardly by a predetermined distance, determining a machining area the processing path on the basis of A fourth process of forming the over emissions, causes the computer to execute, by the automatic design program, resolve.

According to the present invention , it is possible to easily form a processing pattern that is easy to process and has a stable shape.

Further, in the second process, a plurality of heart coordinates in, place the distance between the two central coordinates becomes less diameter D1 case, the provisional working straight line is formed between the two central coordinates , it can be stabilized machined shape as that Do.

Further, the fifth process of the patterning transmural throughbore in machining area, may be executed on the computer. Thereby, patterning of a through hole can be performed easily .

  Moreover, in the 2nd viewpoint of this invention, said subject is solved by the recording medium which memorize | stored said automatic design program.

  Using the automatic design program stored in the recording medium, it is possible to easily form a machining pattern that is easy to machine and has a stable shape.

  According to the present invention, it is possible to easily form a processing pattern that is easy to process and has a stable shape.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 3 is a plan view showing the processing pattern of the jig formed using the automatic design program according to the first embodiment of the present invention.

  Referring to FIG. 3, in the plan view of the processing pattern of the jig 100 designed by using the automatic design program according to the present embodiment, a processing region 102 that becomes a concave groove portion is formed on the substrate 101. It has a structure. The processing region 102 corresponds to the hole 12 of the jig shown in FIG. In the case of the jig according to the present embodiment, hole portions whose center coordinates are equal to or less than a predetermined distance are connected by straight lines having a predetermined thickness (processing straight line; described later), and the outlines of these hole portions and straight line portions are taken. Thus, a pattern of the continuous processing region 102 is formed.

  Moreover, the hole part which has the center coordinate in which the distance between other center coordinates exceeds predetermined distance is not connected by the straight line. That is, the processing region 102 includes a portion to which a hole is connected, but includes a hole that is not connected depending on the condition of the center coordinates.

  Conventionally, the jig was formed by repeating the process of forming the hole part a plurality of times, but in the case of the present embodiment, the jig is formed by forming (cutting) a continuous groove-shaped processing region. It is possible to form a structure corresponding to the hole portion. For this reason, there is an advantage that jig processing is easy and processing time is shortened. In this way, when the jig shape is different, the machining efficiency is different from the machining tool for machining the jig and the cutting speed of the machining tool.

  For example, when a substrate is cut using a substantially cylindrical tool, it is possible to form a pattern more efficiently by grooving using the side wall portion of the tool than in drilling using the tip portion. For this reason, the jig | tool which has said structure by a present Example becomes favorable in the efficiency of a process.

  Further, in the processing pattern according to the present embodiment, unlike the R1 portion and R2 portion shown in FIG. 2, for example, a portion having a thin substrate thickness or a portion having an acute angle is not formed. This is because in the automatic design program according to the present embodiment, the processing pattern is designed so that the thickness of the portion remaining after processing is equal to or greater than a predetermined thickness. For this reason, the occurrence of defects such as chipping in the jig is suppressed.

In the program according to the present embodiment, the diameter of the machining circle (machining hole) is increased by a predetermined thickness (margin width), and the machining straight line connecting the centers of the machining circles is defined as the machining tool diameter + the predetermined thickness (margin width). ), And the outline of the machining circle and machining straight line are taken to form a temporary machining area. Thereafter, the temporary machining area is offset inward by a predetermined distance to form a machining area.

  For this reason, in the processing pattern, there is no thin portion or a portion formed with an acute angle, and a jig having a stable pattern that is not easily damaged such as chipping is easily formed using an automatic design pattern. It is possible.

  Further, in the above processing region, at least one through hole 103 for releasing the gas staying in the groove portion may be formed not in each hole portion but in the processing region to which the hole portions are connected. For this reason, processing is easier than conventional jigs.

  Further, the hole connected by a straight line has a distance of the center coordinate of the hole not more than a predetermined value. For this reason, you may form the hole part spaced apart from the other hole part by the substantially same method as the conventional process.

  Next, an automatic design program for designing the machining pattern of the jig 100, a recording medium that stores the automatic design program, and a computer that executes the automatic design program will be described.

  FIG. 4 is a diagram showing main data handled by the program according to the present embodiment. Referring to FIG. 4, the center coordinates C are data indicating the coordinates of the jig corresponding to the center coordinates of the through hole of the wiring board on which the jig is used, and in this embodiment, the processing pattern is formed. This is the center coordinate of the machined hole.

  The processing hole required diameter D is data indicating the diameter of a hole required as a jig including an error in alignment accuracy in addition to the through hole diameter of the wiring board. Is determined by the positioning accuracy.

  The tool diameter d is a value indicating the diameter of, for example, a substantially cylindrical tool that forms the processing pattern of the jig. The tool diameter d is a reference width when a linear groove connecting the center coordinates C is formed.

  In addition, the margin A is provided in order to suppress the formation of a thinned portion or a sharp portion in the processing pattern, and a required diameter of the processing hole or a processing straight line is widened (thickened). This is the reference width. In the program according to the present embodiment, the machining circle and the machining straight line are enlarged, and the temporary machining region is patterned using the outer line of the machining circle and the machining straight line. Thereafter, the temporary machining area is offset inward by the offset amount F to determine the final machining area.

  Since such a process is performed, in the processing pattern formed by the program according to the present embodiment, formation of a thin portion or a sharp portion is suppressed. The reason why the area of the processed pattern is once increased (by thickening by the margin width A) and then offset by the offset amount to reduce the area of the processed pattern again is as follows. This is because the area of the portion not cut) is increased and the strength of the jig is maintained well.

  Next, FIG. 5 shows a computer that executes the program of the present embodiment. Referring to FIG. 5, a computer 20 shown in this figure includes a CPU (Central Processing Unit) 21, a memory 24 such as a RAM and a ROM, a communication unit 25 capable of communicating with the outside, a program according to this embodiment, and the like. It has a recorded recording medium 22 that can be removed, a display unit 23 such as a CRT, and an input unit 26 such as a keyboard.

  FIG. 6 shows a processing unit that performs processing of this program inside the CPU 21. The processing unit includes an initial data input unit 21A to which initial parameters (for example, C, D, d, A, F, etc.) are input, a data storage unit 21B in which data is stored, and calculation of coordinates of a machining pattern to be formed. A coordinate calculation unit 21C for drawing and a drawing unit 21D for drawing a machining pattern to be formed.

  Next, a flowchart showing the operation of the computer by the automatic design program according to this embodiment shown in FIG. 7 will be described. Moreover, an example of the processing pattern formed based on the flowchart will be described with reference to FIGS.

  Referring to FIG. 7, first, when the program starts, in step 1 (indicated as S1 in the figure, the same applies hereinafter), necessary parameters are input from the input unit 26.

  In the case of the present embodiment, the center coordinate C, the required diameter D of the machining hole, the tool diameter d, the margin width A, and the offset amount F described above are input.

  Next, in step 2, a plurality of temporary machining circles 102 </ b> A having the diameter D <b> 1 as the machining required diameter D + the margin width A around the center coordinate C input in step 1 are formed (patterned). In this case, the diameter of the hole necessary as a jig is D, but as described above, the diameter D1 of the temporary machining circle is not formed so that a thin part or a sharp part of the machining pattern is not formed. = Processing hole required diameter D + margin width A In this case, the margin width A is a thickness that is desired to be left as a processing pattern. FIG. 8 is a plan view showing the temporary processing circle 102A formed in the stage of step 2.

  Next, in step 3, the center coordinates where the distance between the two points of the center coordinates C is equal to or less than the diameter D1 (the diameter of the temporary machining circle 102A) are connected by a straight line L. The straight line L formed in the step 3 is shown in FIG. 9 together with the temporary machining circle 102A.

  Next, in step 4, a temporary machining straight line LA is formed with the thickness W of the straight line L formed in the previous step as the tool diameter d + the margin width A. In this case, the minimum thickness of the temporary machining line necessary for forming the machining pattern is the tool diameter d. However, as described above, a portion where the thickness of the machining pattern is thin or an acute angle is present. The thickness W = the tool diameter d + the margin width A so as not to be formed. In this case, the margin width A is a thickness that is desired to be left as a processing pattern. FIG. 10 shows the provisional machining straight line LA and the provisional machining circle 102 </ b> A formed in the step 4.

  Next, in step 5, when the temporary processing circle 102A and the temporary processing straight line LA are overlapped (when drawn), the outer processing line (line) 102B is formed by connecting the outer lines. In this case, the temporary machining area 102B is defined as the closed area formed by the temporary machining circle 102A and the closed area formed by the temporary machining straight line LA. A region (line) is selected. Further, in a portion where the temporary machining circle 102A and the temporary machining straight line LA do not overlap, the line constituting the temporary machining circle 102A or the temporary machining straight line LA becomes a line for determining the temporary machining area 102B as it is. FIG. 11 shows the temporary processing region 102B.

  Next, in step 6, the temporary processing region 102 </ b> B formed in the previous step is offset inward by an offset amount F to determine the processing region (line) 102. In this case, the offset amount F is preferably 1/2 of the margin width A, for example. That is, the area of the non-processed portion reduced by taking the processing allowance width A is substantially recovered in this step. Since the jig is structurally stronger and more stable as the area of the non-processed part (the part that is not cut) is larger, it is preferable to secure the area of the non-processed part by performing the process of this step.

  By performing such processing, the jig designed by the program according to the present embodiment can secure a sufficient area of the non-processed portion, and suppress formation of a thin portion or a sharp portion, and a structure It becomes a stable jig and is preferable. The processing region (line) 102 is shown in FIG.

  Next, in step 7, as shown in FIG. 13, the through hole 103 is patterned as necessary. In the machining region 102 described above, the through hole 103 for releasing the gas staying in the recess (machining region) is not at least a hole corresponding to the through hole as in the prior art, but at least in the machining region to which the hole is connected. One should be formed. For this reason, processing is easier than conventional jigs.

  Further, if necessary, in step 8, as shown in FIG. 14, a locus of a processing tool for processing (cutting) the processing region 102 into a concave shape may be formed. Such a locus may be formed on the processing apparatus side (such as an automatic processing machine). In this way, the processing pattern is completed in step 9, and the process ends.

  Further, the position of the through hole 103 may be the center position of any one of the temporary processing circles 102A in the processing region 102, or on the processing trajectory including the start point or the end point of the processing trajectory in Step 8. Coordinates of

  Further, in the above example, after forming the temporary machining circle in step 2, the temporary machining straight line LA is formed in steps 3 to 4, but the patterning order of the temporary machining circle and the temporary machining straight line is reversed. May be. That is, after step 1, the process of step 3 to step 4 may be performed first, and then the process of step 2 may be performed.

  By using the above automatic design program, it is possible to easily design a jig that is easy to process and has a good processing efficiency as compared with a conventional jig. Furthermore, according to the automatic design program, it is possible to easily design a jig having a stable shape and a shape that is not easily damaged.

  Further, the automatic design program is not limited to the design of the jig for forming the wiring board, and can be used for various designs that require the processing pattern described above.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the specific embodiments described above, and various modifications and changes can be made within the scope described in the claims.

  According to the present invention, it is possible to easily form a processing pattern that is easy to process and has a stable shape.

It is FIG. (1) which shows an example of the shape of the conventional jig | tool. It is a figure (the 2) which shows an example of the shape of the conventional jig | tool. It is a figure (the 3) which shows an example of the shape of the conventional jig | tool. It is a top view which shows the processing pattern of the conventional jig | tool. It is a figure which shows the jig | tool formed by the program by Example 1. FIG. It is a figure which shows the main data handled with the program by Example 1. FIG. It is a figure which shows the computer which runs the program by Example 1. FIG. It is a figure which shows the process part of the computer of FIG. It is a flowchart which shows the program by Example 1. It is an example (the 1) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 2) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 3) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 4) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 5) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 6) of the processing pattern formed by the program by Example 1. FIG. It is an example (the 7) of the processing pattern formed by the program by Example 1. FIG.

Explanation of symbols

101 Substrate 102 Processing area 102A Temporary processing circle 102B Temporary processing area L Straight line LA Temporary processing line C Center coordinate D Required hole diameter d Tool diameter A Allowance width F Offset amount

Claims (4)

An automatic design program for causing a computer to execute a design for forming a machining pattern for cutting a surface to be machined by a combination of a machining circle and a machining line,
A first process for patterning a plurality of provisional machining circles corresponding to the center coordinates of the plurality of machining circles and having a diameter D1 of D1 = (working hole required diameter D + allowance width A);
A second process of connecting a plurality of the central coordinates and patterning a temporary machining straight line in which the thickness W is W = (tool diameter d used for machining + the margin width A);
A third process for forming a temporary processing region using an outer line of the temporary processing circle formed in the first processing and the temporary processing straight line formed in the second processing;
The temporary working area, is offset inwardly by a predetermined distance, and a fourth process of forming the working pattern based on the determined processing area, causes the computer to execute an automatic design program.   In the second process, when the distance between two center coordinates among the plurality of center coordinates is equal to or less than the diameter D1, the temporary processing straight line is formed between the two center coordinates. The automatic design program according to claim 1, wherein:   The automatic design program according to claim 1 or 2, further causing a computer to execute a fifth process of patterning a through hole in the processing region.   A recording medium storing the automatic design program according to any one of claims 1 to 3.

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