CN107820365B - PCB processing method and PCB - Google Patents
PCB processing method and PCB Download PDFInfo
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- CN107820365B CN107820365B CN201710996734.3A CN201710996734A CN107820365B CN 107820365 B CN107820365 B CN 107820365B CN 201710996734 A CN201710996734 A CN 201710996734A CN 107820365 B CN107820365 B CN 107820365B
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- 238000003672 processing method Methods 0.000 title claims abstract description 10
- 238000003801 milling Methods 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0271—Mechanical force other than pressure, e.g. shearing or pulling
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a PCB processing method and a PCB, comprising the following steps: drilling a pre-drilled hole on the plate surface; milling a first groove through the pre-drilled hole, wherein the groove edge of the first groove penetrates through the circle center of the pre-drilled hole; milling a second slot through the pre-drilled hole perpendicular to the first slot; the groove edge of the second groove is tangent to the pre-drilled hole, and the second groove and the first groove form a T-shaped groove. The invention determines the grooving positions and directions of the first groove and the second groove by pre-drilling a pre-drilled hole, thereby ensuring the regular shape of the manufactured T-shaped groove and meeting the production requirement.
Description
Technical Field
The invention relates to the technical field of PCBs, in particular to a PCB processing method and a PCB.
Background
Pcb (printed Circuit board), which is called printed Circuit board in chinese, is an important electronic component, is a support for electronic components, and is a carrier for electrical connection of electronic components. When assembling and assembling the PCB, it is often necessary to provide a slot in the PCB.
At present, when a PCB needs to be grooved, grooves with required shapes are usually drilled on a board directly, the groove irregular phenomenon is easily caused by the grooving mode, and the production quality of the PCB is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a PCB processing method and a PCB, which overcome the problem of irregular groove shape when a T-shaped groove is manufactured on the PCB in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of processing a PCB, the method comprising:
drilling a pre-drilled hole on the plate surface;
milling a first groove through the pre-drilled hole, wherein the groove edge of the first groove penetrates through the circle center of the pre-drilled hole;
milling a second slot through the pre-drilled hole; the groove edge of the second groove is tangent to the pre-drilled hole, and the second groove and the first groove form a T-shaped groove.
Optionally, the radius of the pre-drilled hole is less than or equal to one quarter of the width of the first groove.
Optionally, in the T-shaped groove, the second groove is perpendicular to the first groove;
the first end of the first slot passes through the first side of the second slot, while the first end of the first slot is located in the second slot.
Optionally, the grooving method of the second groove is as follows:
and milling the second groove by using a straight line in which a cutter is tangent to the first end of the first groove, so that the groove edge of the second groove is tangent to the first end of the first groove.
Optionally, in the T-shaped groove, the second groove is perpendicular to the first groove;
the first end of the second slot passes through the first side of the first slot while the second end of the second slot is located within the second slot.
Optionally, the grooving method of the second groove is as follows:
and milling a second end of the second groove at a position 0.1-0.2 mm away from the second side edge of the first groove by using a cutter, so that the distance between the second end of the second groove and the second side edge of the first groove is 0.1-0.2 mm, and the groove edge of the first groove is prevented from being damaged by milling the second end of the second groove.
Optionally, the second end of the second groove is milled by a cutter at a distance of 0.15mm from the second side edge of the first groove, so that the second end of the second groove is 0.15mm away from the second side edge of the first groove.
Optionally, the width of the first groove is smaller than or equal to the width of the second groove.
Optionally, a first slot cutter is used to mill the first slot, and a second slot cutter longer than the first slot cutter is used to mill the second slot.
A PCB is manufactured by any one of the processing methods.
The invention has the beneficial effects that:
in the invention, the grooving positions and directions of the first groove and the second groove are determined by pre-drilling a pre-drilled hole, so that the shape rule of the manufactured T-shaped groove is ensured to meet the production requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flow chart of a processing method of a PCB according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a positional relationship between a pre-drilled hole and a predetermined T-shaped groove according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating another relationship between the pre-drilled holes and the predetermined "T" -shaped grooves according to an embodiment of the present invention;
FIG. 4 is a schematic view of a "T" shaped slot with a vertical slot as the first slot provided by an embodiment of the present invention;
FIG. 5 is another schematic view of a "T" shaped slot in which the first slot is a vertical slot, according to an embodiment of the present invention;
FIG. 6 is a schematic view of a "T" shaped slot with a transverse slot as the first slot in accordance with an embodiment of the present invention;
fig. 7 is another schematic view of a "T" shaped groove in which the first groove is a transverse groove according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 shows a flow of a PCB processing method.
In this embodiment, the processing method of the PCB includes the following steps:
and S101, drilling a pre-drilled hole at a preset position needing slotting.
In this step, the specific manufacturing process is as follows:
1) set position
Please refer to fig. 2 and fig. 3, which are diagrams illustrating the positional relationship between the pre-drilled hole and the predetermined T-shaped groove.
The position of a T-shaped groove to be manufactured is preset, and according to design requirements, a pre-drilled hole is formed in the intersection point of a transverse groove and a vertical groove in the T-shaped groove as much as possible.
2) Set width
According to the design requirement, the radius of the pre-drilled hole is less than or equal to one fourth of the width of the first groove to be drilled.
3) Set angle
When the pre-drilled holes are manufactured, the cutter needs to be perpendicular to the board surface so as to drill the pre-drilled holes perpendicular to the board surface and avoid the occurrence of inclined holes.
The purpose of manufacturing the pre-drilled hole in the step is as follows: the direction of the T-shaped groove to be manufactured is determined through pre-drilling, so that the manufactured T-shaped groove meets the production requirements in position and shape.
S102, milling a first groove through the pre-drilled hole, so that the groove edge of the first groove penetrates through the center of the pre-drilled hole.
In this step, the manufacturing process of the first groove is as follows:
1) set position
And milling a first groove by the cutter along the straight line where the center of the pre-drilled hole is located, so that the groove edge of the first groove penetrates through the center of the pre-drilled hole.
2) Set width
The width of the first slot is set to be greater than or equal to four times the radius of the pre-drilled hole by the radius of the pre-drilled hole, so that the width of the first slot meets the preliminary design requirements.
3) Set depth
In this step, a first groove is made using a cutter of length a, such that the depth of the first groove is greater than or equal to a.
And S103, milling a second groove perpendicular to the first groove through the pre-drilled hole, so that the groove edge of the second groove is tangent to the pre-drilled hole, and the second groove and the first groove form a T-shaped groove.
In this step, the manufacturing process of the second groove is as follows:
1) set position
In this step, the position of the second groove should be determined according to the type of the "T" groove to be made, and the following two ways are mainly included:
a. when the T-shaped groove to be manufactured is placed in the forward direction, the manufactured first groove is a vertical groove, and the second groove to be manufactured is a transverse groove, namely the first end of the first groove penetrates through the first side edge of the second groove, and meanwhile the first end of the first groove is located in the second groove.
Please refer to fig. 4 and 5, which are schematic views of a "T" shaped groove with a vertical groove as the first groove according to an embodiment of the present invention.
In order to correspond to this type of "T" groove, the second groove is made in the following way: and (3) enabling a cutter to be tangent to a straight line where the first end of the first groove is located so as to mill the second groove, and enabling the groove edge of the second groove to be tangent to the first end of the first groove.
b. When the T-shaped groove to be manufactured is placed in the forward direction, the manufactured first groove is a transverse groove, and the second groove to be manufactured is a vertical groove, namely the first end of the second groove penetrates through the first side edge of the first groove, and meanwhile the second end of the second groove is positioned in the second groove.
Please refer to fig. 6 and 7, which are schematic views of a "T" shaped groove with a transverse groove as the first groove according to an embodiment of the present invention.
Corresponding to the T-shaped groove, the second groove is made in the following way: and milling a second end of the second groove at a position 0.1-0.2 mm away from the second side edge of the first groove by using a cutter, and enabling the second end of the second groove to be 0.1-0.2 mm away from the second side edge of the first groove, so that a vacant position is reserved for the cutter, and the groove edge of the first groove is prevented from being damaged when the second end of the second groove is milled.
Wherein, in this embodiment, the second end of the second slot is 0.15mm away from the second side of the first slot.
2) Set width
In order to ensure the rule of the groove shape of the T-shaped groove, the width of the second groove is larger than that of the first groove milled in advance in the step.
3) Set width
And selecting the cutter with the length B as required to obtain the second groove with the depth B, so that the depth of the second groove meets the production requirement.
In any of the above steps, the tool for milling the first groove is a first groove cutter, and the tool for milling the second groove is a second groove cutter. The lengths of the first slot cutter and the second slot cutter can be the same or different.
In this embodiment, the length a of the first grooving cutter is less than the length B of the second grooving cutter, so that the depth of the first groove is less than the depth of the second groove.
Based on the above embodiments, the present embodiment provides a PCB, where the PCB is provided with a "T" shaped groove, and the "T" shaped groove is made by the manufacturing method provided in the above embodiments.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A processing method of a PCB is characterized by comprising the following steps:
drilling a pre-drilled hole on the plate surface;
milling a first groove through the pre-drilled hole, wherein the groove edge of the first groove penetrates through the circle center of the pre-drilled hole;
milling a second slot through the pre-drilled hole; the groove edge of the second groove is tangent to the pre-drilled hole, and the second groove and the first groove form a T-shaped groove.
2. The method of claim 1, wherein the radius of the pre-drilled hole is less than or equal to one quarter of the width of the first slot.
3. The method of claim 2, wherein in the "T" shaped groove, the second groove is perpendicular to the first groove;
the first end of the first slot passes through the first side of the second slot, while the first end of the first slot is located in the second slot.
4. The method for processing a PCB of claim 3, wherein the slotting method of the second slot is as follows:
and milling the second groove by using a straight line in which a cutter is tangent to the first end of the first groove, so that the groove edge of the second groove is tangent to the first end of the first groove.
5. The method of claim 2, wherein in the "T" shaped groove, the second groove is perpendicular to the first groove;
the first end of the second slot passes through the first side of the first slot while the second end of the second slot is located within the first slot.
6. The method for processing the PCB of claim 5, wherein the slotting method of the second slot is as follows:
and milling a second end of the second groove at a position 0.1-0.2 mm away from the second side edge of the first groove by using a cutter, so that the distance between the second end of the second groove and the second side edge of the first groove is 0.1-0.2 mm, and the groove edge of the first groove is prevented from being damaged by milling the second end of the second groove.
7. The method of processing a PCB of claim 6, wherein a cutter is caused to mill the second end of the second slot 0.15mm from the second side of the first slot, such that the second end of the second slot is 0.15mm from the second side of the first slot.
8. A method of processing a PCB as claimed in any of claims 1 to 7, wherein the width of the first slot is less than or equal to the width of the second slot.
9. The method of processing a PCB of any of claims 1 to 7, wherein the first slot is milled using a first slot cutter and the second slot is milled using a second slot cutter longer than the first slot cutter.
10. A PCB manufactured according to the method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710996734.3A CN107820365B (en) | 2017-10-19 | 2017-10-19 | PCB processing method and PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710996734.3A CN107820365B (en) | 2017-10-19 | 2017-10-19 | PCB processing method and PCB |
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| Publication Number | Publication Date |
|---|---|
| CN107820365A CN107820365A (en) | 2018-03-20 |
| CN107820365B true CN107820365B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710996734.3A Active CN107820365B (en) | 2017-10-19 | 2017-10-19 | PCB processing method and PCB |
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| CN (1) | CN107820365B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108714704A (en) * | 2018-08-27 | 2018-10-30 | 沈阳富创精密设备有限公司 | A kind of processing technology at the depth angles chamber R |
| CN109121307A (en) * | 2018-09-30 | 2019-01-01 | 广州兴森快捷电路科技有限公司 | The processing method of the through slot of circuit board |
| CN109041435A (en) * | 2018-10-09 | 2018-12-18 | 昱鑫科技(苏州)有限公司 | A kind of the irregularly-shaped hole boring method and pcb board of pcb board |
| CN111010802B (en) * | 2019-12-09 | 2021-09-21 | 广州广合科技股份有限公司 | L-shaped groove hole machining method based on PCB |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001244609A (en) * | 2000-02-25 | 2001-09-07 | Sony Corp | Method of manufacturing wiring board and wiring board obtained with the same method |
| CN105430910A (en) * | 2015-11-23 | 2016-03-23 | 梅州市志浩电子科技有限公司 | Printed circuit board overlapped groove processing method |
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2017
- 2017-10-19 CN CN201710996734.3A patent/CN107820365B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001244609A (en) * | 2000-02-25 | 2001-09-07 | Sony Corp | Method of manufacturing wiring board and wiring board obtained with the same method |
| CN105430910A (en) * | 2015-11-23 | 2016-03-23 | 梅州市志浩电子科技有限公司 | Printed circuit board overlapped groove processing method |
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| Publication number | Publication date |
|---|---|
| CN107820365A (en) | 2018-03-20 |
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Denomination of invention: A PCB processing method and PCB Granted publication date: 20200908 Pledgee: Meizhou branch of China Construction Bank Co.,Ltd. Pledgor: MEIZHOU ZHIHAO ELECTRONIC-TECH Co.,Ltd. Registration number: Y2024980023303 |