A method for improving backdrill mapping efficiency, computer storage medium and backdrilling machine

Abstract

The invention relates to the technical field of PCB boards, and in particular to a method for improving back drilling mapping efficiency, a computer storage medium and a back drilling machine. The method comprises the following steps: S1. according to the hole depth of the back drilling hole, the first type of drilling hole is set on the drill belt and is obtained by the depth control function mapping of the back drilling machine, and the second type of drilling hole does not use the depth control function mapping of the back drilling machine; S2. Aluminum sheets and pads are stacked from top to bottom on the back drilling machine, and the back drilling machine records the height h1; S3. A PCB board is placed between the aluminum sheet and the pad, and the back drilling machine records the height h2; S4. The thickness of the PCB board is calculated; S5. The drill belt of the back drilling machine is adjusted, and the back drilling machine drills the first type of drilling hole in a depth control mapping manner according to the actual measured thickness of the PCB board; S6. The back drilling machine drills the second type of drilling hole in a depth control mapping manner without using the depth control function mapping. The method can efficiently perform back drilling when the depth control mapping function is used.

Description

Technical Field

[0001] The invention relates to the technical field of PCB boards, and in particular to a method for improving backdrill mapping efficiency, a computer storage medium and a backdrill machine. Background Art

[0002] As the number of PCB layers increases, the thickness of the board increases, and the precision increases, the requirements for back drilling are also increasing, and the number of back drill holes is gradually increasing. In PCB boards, the drilling depth control will also vary due to the different board thicknesses and dielectric thicknesses in different areas. The deeper the back drilling, the more holes penetrated, the more difficult it is to control. In order to improve the back drilling capability, the back drilling machine has designed a mapping function. The mapping function adjusts the depth of the drilling hole so that the back drilling can still control the hole depth better when penetrating multiple layers. However, the existing depth control method still has shortcomings: if the depth control function is used for drilling, all target holes on the PCB board are obtained using the depth control mapping function. In actual production, for holes with shallow back drilling and fewer layers penetrated, the mapping function can be used to meet the production requirements. However, the existing depth control drilling method undoubtedly reduces the drilling efficiency and is not conducive to improving production efficiency. Summary of the invention

[0003] The object of the present invention is to avoid the shortcomings of the prior art and provide a method for improving backdrill mapping efficiency. The method for improving backdrill mapping efficiency can efficiently perform backdrilling by using the function of depth control mapping.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A method for improving backdrill mapping efficiency is provided, comprising the following steps:

[0006] S1. According to the depth of the back-drilled holes, the back-drilled holes are divided into first-type drilled holes and second-type drilled holes on the drill belt. The first-type drilled holes are obtained by the depth control function mapping of the back-drilling machine, and the second-type drilled holes do not use the depth control function mapping of the back-drilling machine, wherein the depth of the first-type drilled holes is greater than the depth of the second-type drilled holes;

[0007] S2. Place aluminum sheets and pads on the back drill from top to bottom, start the back drill, and drill toward the aluminum sheet from top to bottom. When the drill needle of the back drill touches the aluminum sheet, the back drill stops and records the height h1.

[0008] h1 is the height corresponding to a hole position in the first type of drilling holes, and the back drilling machine repeats the operation to obtain the height h1 corresponding to each hole position in the first type of drilling holes;

[0009] S3. Place the PCB board between the aluminum sheet and the backing plate, and drill the aluminum sheet from top to bottom with the back drill. When the back drill touches the aluminum sheet, the back drill stops and records the height h2, where h2 is the height corresponding to a hole position in the first type of drilling. Repeat the back drill operation to obtain the height h2 corresponding to each hole position in the first type of drilling.

[0010] S4. Calculate the PCB thickness corresponding to each hole position in the first type of drilling. The calculation formula is: H = h2-h1,

[0011] In the above, H represents the PCB thickness corresponding to each hole position in the first type of drilling.

[0012] h2 represents the total thickness of the aluminum sheet, backing plate and PCB board.

[0013] h1 represents the thickness of the aluminum sheet and the backing plate;

[0014] S5. Adjust the drill belt of the back drill to keep the PCB board between the pad and the aluminum sheet. The back drill drills the first type of holes in a depth-controlled mapping manner according to the measured PCB board thickness.

[0015] S6. Replace the drill belt of the back drill rig, and the back drill rig does not use the depth control function mapping method to drill the second type of borehole.

[0016] In some embodiments, the back drill is a schmoll back drill.

[0017] In some embodiments, in step S3, the aluminum sheet is replaced first, and then the PCB board is placed between the aluminum sheet and the pad, and the thickness of the aluminum sheet in step S2 is consistent with that of the aluminum sheet in step S3.

[0018] In some embodiments, in step S5, the aluminum sheet is replaced first, and then the PCB board is kept between the pad and the aluminum sheet. The thickness of the aluminum sheet in step S5 is consistent with that of the aluminum sheet in steps S3 and S2.

[0019] In some embodiments, the feed speed of drilling in steps S2, S3, S5, and S6 is kept consistent.

[0020] Beneficial effects of the method for improving backdrill mapping efficiency of the present invention:

[0021] The method for improving back drilling mapping efficiency of the present invention distinguishes on the drill belt between a first type of drill holes that require depth control function mapping and a second type of drill holes that do not use the depth control function mapping of the back drilling machine, so that only the first type of drill holes need to be mapped with the depth control function, and the second type of drill holes do not need to be mapped with the depth control function. This overcomes the problem in the prior art that all holes need depth control mapping when using the depth control function mapping, effectively reduces the drilling time consumed by mapping, and can ensure the drilling quality.

[0022] A computer storage medium is also provided. The computer-readable storage medium stores a computer program. When the computer program is read and executed by a processor, the method for improving backdrill mapping efficiency is implemented.

[0023] A back drilling machine is also provided, comprising the above-mentioned computer-readable storage medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a comparison diagram of the aluminum sheet of Example 1 before and after use.

[0025] Figure 2 This is a deep back drilling effect diagram obtained in Example 1.

[0026] Figure 3 This is a diagram showing the shallow back drilling effect obtained in Example 1. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" used in the present invention and the appended claims are intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] Example 1

[0031] The method for improving backdrill mapping efficiency disclosed in this embodiment includes the following steps:

[0032] S1. According to the depth of the back-drilled holes, the back-drilled holes are divided into first-type drilled holes and second-type drilled holes on the drill belt. The first-type drilled holes are obtained by the depth control function mapping of the back-drilling machine, and the second-type drilled holes do not use the depth control function mapping of the back-drilling machine, wherein the depth of the first-type drilled holes is greater than the depth of the second-type drilled holes;

[0033] S2. Place aluminum sheets and pads on the back drill from top to bottom, start the back drill, and drill toward the aluminum sheet from top to bottom. When the drill needle of the back drill touches the aluminum sheet, the back drill stops and records the height h1.

[0034] h1 is the height corresponding to a hole position in the first type of drilling. The back drilling machine repeats the operation to obtain the height h1 corresponding to each hole position in the first type of drilling. When the drill needle contacts the aluminum sheet, a conductive signal loop will be formed to obtain the corresponding height h1;

[0035] S3. Place the PCB between the aluminum sheet and the backing plate, and drill the aluminum sheet from top to bottom. When the back drill touches the aluminum sheet, it stops and records the height h2, which is the height corresponding to a hole position in the first type of drilling. The back drill repeats the operation to obtain the height h2 corresponding to each hole position in the first type of drilling. When the drill needle touches the aluminum sheet, a conductive signal loop is formed to obtain the corresponding height h2.

[0036] S4. Calculate the PCB thickness corresponding to each hole position in the first type of drilling. The calculation formula is: H = h2-h1,

[0037] In the above, H represents the PCB thickness corresponding to each hole position in the first type of drilling;

[0038] S5. Adjust the drill belt of the back drill to keep the PCB board between the pad and the aluminum sheet. The back drill drills the first type of holes in a depth-controlled mapping manner according to the measured PCB board thickness.

[0039] S6. Replace the drill belt of the back drill rig, and the back drill rig does not use the depth control function mapping method to drill the second type of borehole.

[0040] The above-mentioned method for improving the efficiency of back drilling mapping distinguishes on the drill belt between the first type of drill holes that require the use of depth control function mapping and the second type of drill holes that do not use the depth control function mapping of the back drilling machine, so that only the first type of drill holes need to be mapped with the depth control function, and the second type of drill holes do not need to be mapped with the depth control function. This overcomes the problem in the prior art that all holes require depth control mapping when using the depth control function mapping, effectively reduces the drilling time consumed by mapping, and can ensure the drilling quality.

[0041] The more holes are drilled in the second category, the more time can be saved.

[0042] In this embodiment, the back drill is a schmoll back drill.

[0043] In this embodiment, in step S3, the aluminum sheet is replaced first, and then the PCB board is placed between the aluminum sheet and the pad. The thickness of the aluminum sheet in step S2 is consistent with that of the aluminum sheet in step S3.

[0044] When the drill bit contacts the aluminum sheet, a conductive signal loop is formed. During the current sensing signal, the drill bit also drops, causing the aluminum sheet to produce Figure 1 The dot marks that are sunken downwards are the ones where the aluminum sheet has been drilled into the depressions. If the aluminum sheet is not replaced, the height of the holes at the same position will be inconsistent each time, so the aluminum sheet needs to be replaced to increase the accuracy of back drilling.

[0045] In this embodiment, in step S5, the aluminum sheet is replaced first, and then the PCB board is kept between the pad and the aluminum sheet. The thickness of the aluminum sheet in step S5 is consistent with that in steps S3 and S2.

[0046] Similarly, replace the aluminum sheet to improve the accuracy of back drilling.

[0047] In this embodiment, the drilling feed speed in steps S2, S3, S5, and S6 remains consistent.

[0048] The drilling feed speed in each step is kept consistent to maintain the uniformity of the drilling and avoid errors.

[0049] Example 2

[0050] A computer storage medium, wherein the computer readable storage medium stores a computer program, and when the computer program is read and executed by a processor, the method for improving backdrill mapping efficiency described in embodiment 1 is implemented.

[0051] Example 3

[0052] The back drilling machine disclosed in this embodiment includes the computer-readable storage medium described in Example 2.

[0053] Effect verification:

[0054] The method for improving back drilling mapping efficiency described in Example 1 is used to perform back drilling, which can drill Figure 2 The outline shown is clear and deep enough to drill deep back holes. Figure 3 The shallow back-drilled holes that meet the specifications are shown. It can be seen that the back-drilling method of the present invention can not only drill holes efficiently, but also ensure the quality of the holes, and is suitable for large-scale production applications.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method to improve backdrill mapping efficiency. Its characteristics are: Includes the following step, S1. According to the depth of the back-drilled holes, the back-drilled holes are divided into first-type drilled holes and second-type drilled holes on the drill belt. The first-type drilled holes are obtained by the depth control function mapping of the back-drilling machine, and the second-type drilled holes do not use the depth control function mapping of the back-drilling machine, wherein the depth of the first-type drilled holes is greater than the depth of the second-type drilled holes; S2. Place aluminum sheets and pads on the back drill from top to bottom, start the back drill, and drill toward the aluminum sheet from top to bottom. When the drill needle of the back drill touches the aluminum sheet, the back drill stops and records the height h1. h1 is the height corresponding to a hole position in the first type of drilling holes, and the back drilling machine repeats the operation to obtain the height h1 corresponding to each hole position in the first type of drilling holes; S3. Place the PCB board between the aluminum sheet and the backing plate, and drill the aluminum sheet from top to bottom with the back drill. When the back drill touches the aluminum sheet, the back drill stops and records the height h2, where h2 is the height corresponding to a hole position in the first type of drilling. Repeat the back drill operation to obtain the height h2 corresponding to each hole position in the first type of drilling. S4. Calculate the PCB thickness corresponding to each hole position in the first type of drilling. The calculation formula is: H = h2-h1, In the above, H represents the PCB thickness corresponding to each hole position in the first type of drilling. h2 represents the total thickness of the aluminum sheet, backing plate and PCB board. h1 represents the thickness of the aluminum sheet and the backing plate; S5. Adjust the drill belt of the back drill to keep the PCB board between the pad and the aluminum sheet. The back drill drills the first type of holes in a depth-controlled mapping manner according to the measured PCB board thickness. S6. Replace the drill belt of the back drill rig, and the back drill rig does not use the depth control function mapping to drill the second type of hole.

2. The method for improving backdrill mapping efficiency according to claim 1, Its characteristics are: The back drill is a schmoll back drill.

3. The method for improving backdrill mapping efficiency according to claim 1, Its characteristics are: In step S3, the aluminum sheet is replaced first, and then the PCB board is placed between the aluminum sheet and the pad. The thickness of the aluminum sheet in step S2 is consistent with that of the aluminum sheet in step S3.

4. The method for improving backdrill mapping efficiency according to claim 3, Its characteristics are: In step S5, the aluminum sheet is replaced first, and then the PCB board is kept between the pad and the aluminum sheet. The thickness of the aluminum sheet in step S5 is consistent with that in step S3 and step S2.

5. The method for improving backdrill mapping efficiency according to claim 1, Its characteristics are: The drilling feed speed in steps S2, S3, S5 and S6 remains consistent.

6. A computer storage medium, Its characteristics are: The computer-readable storage medium stores a computer program, and when the computer program is read and executed by a processor, the method for improving backdrill mapping efficiency described in any one of claims 1 to 5 is implemented.

7. A back drilling machine, Its characteristics are: Includes the computer-readable storage medium of claim 6.

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