A method for fast picking up CAF intolerant holes

Abstract

The application discloses a method for quickly selecting CAF-intolerant holes, and comprises the following steps: obtaining the minimum value of CAF tolerance of a PCB plate; determining and inputting a first CAF threshold value by using Genesis software; comparing the distance between two holes in each group of holes in the drilling layer of the PCB plate by using the Genesis software, and performing one-time filtering; performing second-time filtering on the first-time marked holes, automatically filtering out the holes in each group of holes if the holes are in the same network, reserving the holes not in the same network and performing second-time marking to remember the positions and sizes of the holes; and copying the second-time marked holes to a new layer, and the positions and sizes of the holes can meet the Gerber data of a customer. The application has the beneficial effects that the efficiency is improved to more than 98%, and the misoperation in the manual exclusion process is avoided, and the correctness is ensured to 100%.

Description

[0001] The application relates to the technical field of PCB manufacturing, in particular to a method for quickly selecting holes not resistant to CAF.

[0002] With the increasing functionality of PCB products, customers pay more and more attention to the CAF performance of the PCB products, so that the PCB manufacturer needs to analyze and evaluate CAF in engineering design; the biggest factor affecting CAF is the selected CAF-resistant board material, and different grades of CAF-resistant board materials have different network hole edge distances; the customer-provided information is used to determine whether the hole edge distance can meet the CAF, and the manual analysis and selection need a long time and are prone to omissions.

[0003] The application discloses a method for quickly selecting holes not resistant to CAF, which shortens manual checking time, improves work efficiency, avoids misoperation in the manual exclusion process, and thus effectively solves the technical problems in the background art.

[0004] To achieve the above object, the technical scheme of the application is as follows:

[0005] A method for quickly selecting holes not resistant to CAF, the manufacturing method comprising the following steps:

[0006] Step 1: obtaining the minimum value of CAF resistance of a PCB board according to the PCB board provided by a customer in a CAF standard diagram corresponding to the PCB board;

[0007] Step 2: reading in Gerber data of the customer by using Genesis software, and determining and inputting a first CAF threshold value according to the read-in Gerber data;

[0008] Step 3: performing distance comparison on all holes in a drilling layer of the PCB board in groups of two by two by using the Genesis software, and performing first filtering, and automatically marking all holes smaller than the first CAF threshold value for the first time to remember the positions and sizes of the holes;

[0009] Step 4: performing second filtering on the holes marked for the first time, and automatically filtering out holes in groups of two by two in the holes marked for the first time if the holes are in the same network, and retaining holes not in the same network and marking the holes for the second time to remember the positions and sizes of the holes;

[0010] Step 5: copying the holes marked for the second time to a new layer, and the positions and sizes of the holes can meet the Gerber data of the customer.

[0011] ​​​As a preferred improvement of the present application, in step one, the CAF standard chart is provided by the PCB board material supplier.

[0012] As a preferred improvement of the present application, in step one, the minimum CAF resistance of the PCB board is obtained from the corresponding CAF standard chart according to the PCB board model, thickness, PP formula and application field.

[0013] The beneficial effects of the present application are as follows: compared with the traditional manual analysis and selection of CAF-resistant holes, the efficiency is improved by more than 98%, and the misoperation in the manual exclusion process is avoided, ensuring 100% accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 A line chart of a layer of the PCB board of embodiment 1 of the present application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0017] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0018] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0019] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

[0021] The present application provides a method for quickly selecting CAF-unfriendly holes, which comprises the following steps:

[0022] Step one, according to the PCB material provided by the customer, the minimum value of CAF resistance of the PCB material is obtained in the CAF standard diagram corresponding to the PCB material;

[0023] Specifically, the CAF standard diagram is provided by the supplier of the PCB material, and the minimum value of CAF resistance of the PCB material is obtained from the corresponding CAF standard diagram according to the PCB material model, thickness, PP formula and application field.

[0024] Step two, read in the customer's Gerber data with Genesis software, and determine and input the first CAF threshold value according to the read-in Gerber data;

[0025] Step three, use Genesis software to compare the distance of all holes in the drilling layer of the PCB material in pairs, and perform a filtering, and automatically mark the first time for all holes smaller than the first CAF threshold value to remember the position and size of the holes;

[0026] Step four, the second filtering is performed on the first marked holes, and if the holes in pairs in the first marked holes are in the same network, the holes are automatically filtered out, and the holes not in the same network are retained and marked the second time to remember the position and size of the holes;

[0027] Step five, copy the second marked holes to a new layer, and the position and size of the holes can meet the customer's Gerber data.

[0028] The method for quickly selecting CAF-unfriendly holes provided by the present application is described in detail below with specific embodiment 1.

[0029] Embodiment 1

[0030] Figure 1 A line diagram of a PCB board material of Embodiment 1 of the present application. The PCB board material includes a first via 1, a second via 2, a third via 3, a fourth via 4, a fifth via 5, a sixth via 6, a seventh via 7, an eighth via 8, a ninth via 9 and a tenth via 10. As can be seen, the PCB board material needs to measure the hole-to-hole distance of 45 groups, including specifically: nine distances between the first via 1 and the second via 2 to the tenth via 10, eight distances between the second via 2 and the third via 3 to the tenth via 10, seven distances between the third via 3 and the fourth via 4 to the tenth via 10, and so on until one distance between the ninth via 9 and the tenth via 19.

[0031] The Genesis software compares the distance between the first via 1 to the tenth via 10 two by two, and performs a first filtering, and automatically marks the first time for all holes less than the first CAF threshold to remember the position and size of the hole. After the first filtering, assuming that the remaining four groups meet the conditions, they are respectively between the fourth via 4 and the fifth via 5, between the seventh via 7 and the eighth via 8, between the eighth via 8 and the ninth via 9, and between the ninth via 9 and the tenth via 10. Then the second filtering is performed on the remaining four groups of holes marked the first time. If the holes two by two are in the same network, they are automatically filtered out, and the holes that are not in the same network are retained and marked the second time to remember the position and size of the hole. Assuming that the fourth via 4, the fifth via 5, the sixth via 6, the seventh via 7 and the eighth via 8 are in one network, and the ninth via 9 and the tenth via 10 are in one network, then after the second filtering, the eighth via 8 and the ninth via 9 are left, and finally the eighth via 8 and the ninth via 9 are copied to a new layer to obtain the result meeting the customer's requirements.

[0032] The beneficial effects of the present application are as follows: compared with the traditional manual analysis and selection of CAF-tolerant holes, the efficiency is improved by more than 98%, and the misoperation in the manual exclusion process is avoided, ensuring 100% accuracy.

[0033] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A method for quickly selecting apertures that are not resistant to CAF, characterized in that, The method includes the following steps: Step 1: Based on the PCB material provided by the customer, obtain the minimum CAF resistance of the PCB material from the corresponding CAF standard diagram. Step 2: Use Genesis software to read in the customer's Gerber data, and determine and input the first CAF threshold based on the read Gerber data; Step 3: Use Genesis software to compare the spacing of all holes in the drill layer of the PCB board in pairs, and perform a filter. Automatically mark all holes smaller than the first CAF threshold to remember the position and size of the holes. Step 4: Perform a second filtering on the holes marked in the first step. If the pairs of holes marked in the first step are from the same network, they will be automatically filtered out. The holes that are not from the same network will be marked a second time to remember the position and size of the holes. Step 5: Copy the second marked hole to a new layer, ensuring that the position and size of the hole conform to the customer's Gerber data.

2. The method for rapidly selecting apertures that are not resistant to CAF according to claim 1, characterized in that: In step one, the CAF standard drawing is provided by the PCB board supplier.

3. A method for rapidly selecting apertures that are not resistant to CAF according to claim 1 or 2, characterized in that: In step one, the minimum CAF resistance of the PCB board is obtained from the corresponding CAF standard diagram based on the PCB board model, thickness, PP formulation, and application field.

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