CN112512219A - Copper-containing half groove machining method for PCB - Google Patents
Copper-containing half groove machining method for PCB Download PDFInfo
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- CN112512219A CN112512219A CN202011333551.1A CN202011333551A CN112512219A CN 112512219 A CN112512219 A CN 112512219A CN 202011333551 A CN202011333551 A CN 202011333551A CN 112512219 A CN112512219 A CN 112512219A
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- pcb
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a method for processing a copper-containing half groove of a PCB (printed circuit board), which comprises the following steps of: firstly, forming a circular through hole at the junction of each PCB on the PCB general board; step two, fixing the PCB total board on a routing machine after copper deposition; setting a traveling route of a routing tool when each PCB is divided; thirdly, mounting a reverse left-handed milling cutter on the milling machine; step four, the milling machine controls the reverse left-handed milling cutters to be inserted into the circular through holes one by one and processes reverse grooves along the reverse direction of the traveling route of the milling cutters when the PCBs are divided; step five, detaching the reverse left-handed gong cutter, and mounting a right spiral cutter on the gong machine; and step six, the milling machine controls the right spiral cutter to divide the PCBs along the traveling route when the PCBs are divided, and the PCBs with the half holes are obtained. In the production process of the invention, the operation of turning the board is not needed, so that the board is only needed to be turned in sequence, and the upper board and the lower board are in sequence, thereby improving the production efficiency and effectively reducing the reject ratio of the PCB.
Description
Technical Field
The invention relates to the field of PCBs (printed circuit boards), in particular to a method for processing a copper-containing half groove of a PCB.
Background
In the production of the PCB, a plurality of half holes are formed at the edge of the PCB for positioning and fixing. During production of the PCB, a plurality of PCBs are generally arranged on a PCB main board, a round through hole 1 is usually formed in the junction of the PCBs through punching of a half hole in advance, then the PCBs are cut by a milling machine to form a half hole 2, and the PCBs are cut open along the direction indicated by the dotted line in the figure 1 by a right-handed milling cutter when the half hole is formed, so that the half hole is formed. But because the copper sheet 3 that the one deck is very thin has been plated in the through-hole, and the copper sheet is very low with PCB board adhesion moreover, can lead to the copper sheet in the circular through-hole to receive the extrusion of dextrorotation gong sword, to the crooked and by the formation burr of gong sword cut off of circular through-hole centre of a circle direction. This leads to half hole in gong hole after, still need increase one usually and turns over board technology, be about to the board upset 180 degrees of PCB, then continue to use dextrorotation gong sword to cut off the burr, but the board upset back needs pin nail location again, and has certain error for whole technology is complicated, and machining efficiency is low, and the burr is got rid of the effect not good.
Disclosure of Invention
The invention aims to provide a processing method of a copper-containing half groove of a PCB (printed circuit board), wherein a plate turning operation is not needed in the production process, so that the production efficiency is improved and the reject ratio of the PCB is effectively reduced only by rotating the plates in sequence and sequentially arranging the upper plate and the lower plate.
In order to solve the problems, the technical scheme of the invention is as follows:
a processing method of a copper-containing half groove of a PCB comprises the following steps:
firstly, forming a circular through hole at the junction of each PCB on the PCB general board;
step two, fixing the PCB total board on a routing machine after copper deposition; setting a traveling route of a routing tool when each PCB is divided;
thirdly, mounting a reverse left-handed milling cutter on the milling machine;
step four, the milling machine controls the reverse left-handed milling cutters to be inserted into the circular through holes one by one and processes reverse grooves along the reverse direction of the traveling route of the milling cutters when the PCBs are divided;
step five, detaching the reverse left-handed gong cutter, and mounting a right spiral cutter on the gong machine;
and step six, the milling machine controls the right spiral cutter to divide the PCBs along the traveling route when the PCBs are divided, and the PCBs with the half holes are obtained.
In a further improvement, the reverse groove is a rectangular groove.
In a further improvement, the length of the rectangular groove is 3 mm.
In a further improvement, the reverse groove is arc-shaped.
In a further improvement, the reverse groove protrudes 3 mils from the copper sheet.
The invention has the advantages that:
in the production process of the invention, the operation of turning the board is not needed, so that the board is only needed to be turned in sequence, and the upper board and the lower board are in sequence, thereby improving the production efficiency and effectively reducing the reject ratio of the PCB.
Drawings
FIG. 1 is a schematic structural diagram of a copper half-groove machined by a prior art;
FIG. 2 is a schematic structural view of a rectangular reverse groove;
fig. 3 is a schematic structural diagram of the reverse groove being an arc-shaped groove.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The method for processing the copper-containing half slot of the PCB shown in FIG. 2 comprises the following steps:
step one, forming a circular through hole 1 at the junction of each PCB on the PCB general board;
step two, fixing the PCB total board on a routing machine after copper deposition; setting a traveling route of a routing tool when each PCB is divided;
thirdly, mounting a reverse left-handed milling cutter on the milling machine;
step four, the milling machine controls the reverse left-handed milling cutters to be inserted into the circular through holes 1 one by one, and reverse grooves 4 are machined along the reverse direction of the traveling route of the milling cutters when the PCBs are divided;
step five, detaching the reverse left-handed gong cutter, and mounting a right spiral cutter on the gong machine;
and step six, the milling machine controls the right spiral cutter to divide the PCBs along the traveling route when the PCBs are divided, and the PCBs with the half holes 2 are obtained.
The reverse groove 4 is a rectangular groove.
The length of the rectangular groove is 3 mm.
Example 2
When the reverse groove 4 is a rectangular groove, due to the problem of the accuracy of the milling machine, a groove and a rectangular groove cut by the right-handed milling cutter have small protrusions which are not smooth enough, so that the reverse groove 4 is preferably in an arc shape. The reverse groove 4 protrudes 3mil of the copper sheet.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A processing method for a copper-containing half groove of a PCB is characterized by comprising the following steps:
step one, forming a circular through hole (1) at the junction of each PCB on the PCB general board;
step two, fixing the PCB total board on a routing machine after copper deposition; setting a traveling route of a routing tool when each PCB is divided;
thirdly, mounting a reverse left-handed milling cutter on the milling machine;
step four, the milling machine controls the reverse left-handed milling cutters to be inserted into the circular through holes (1) one by one, and reverse grooves (4) are machined along the reverse direction of the traveling route of the milling cutters when the PCBs are divided;
step five, detaching the reverse left-handed gong cutter, and mounting a right spiral cutter on the gong machine;
and step six, the milling machine controls the right spiral cutter to divide the PCBs along the traveling route when the PCBs are divided, and the PCBs with the half holes (2) are obtained.
2. The method for processing a copper half slot of a PCB as claimed in claim 1 wherein the reverse slot (4) is a rectangular slot.
3. The method of processing a copper half groove of a PCB of claim 2, wherein the length of the rectangular groove is 3 mm.
4. The method for processing a copper half slot of a PCB as claimed in claim 1 wherein the reverse slot (4) is arc-shaped.
5. The method for processing the PCB with the copper half-groove of claim 4, wherein the reverse groove (4) protrudes 3mil of copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011333551.1A CN112512219A (en) | 2020-11-25 | 2020-11-25 | Copper-containing half groove machining method for PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011333551.1A CN112512219A (en) | 2020-11-25 | 2020-11-25 | Copper-containing half groove machining method for PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112512219A true CN112512219A (en) | 2021-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011333551.1A Pending CN112512219A (en) | 2020-11-25 | 2020-11-25 | Copper-containing half groove machining method for PCB |
Country Status (1)
| Country | Link |
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| CN (1) | CN112512219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116669311B (en) * | 2023-06-06 | 2023-11-10 | 扬州京柏自动化科技有限公司 | PCB cuts burr integration equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183658A (en) * | 1993-12-22 | 1995-07-21 | Toppan Printing Co Ltd | Forming method for side through hole of printed circuit board |
| CN101152674A (en) * | 2006-09-28 | 2008-04-02 | 日立比亚机械股份有限公司 | Figuration processing method |
| CN201860514U (en) * | 2010-10-22 | 2011-06-08 | 春焱电子科技（苏州）有限公司 | PCB (printed circuit board) with PTH (plated through hole) semicircular hole |
| CN103179791A (en) * | 2011-12-21 | 2013-06-26 | 北大方正集团有限公司 | Metal half-hole forming method and printed circuit board manufacture method |
| KR20160121291A (en) * | 2015-04-10 | 2016-10-19 | (주)영진프로텍 | Half hole of pcb machining method and the pcb manufactured from the same |
| CN111712041A (en) * | 2020-06-02 | 2020-09-25 | 昆山飞繁电子有限公司 | Circuit board half-hole machining process |
-
2020
- 2020-11-25 CN CN202011333551.1A patent/CN112512219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07183658A (en) * | 1993-12-22 | 1995-07-21 | Toppan Printing Co Ltd | Forming method for side through hole of printed circuit board |
| CN101152674A (en) * | 2006-09-28 | 2008-04-02 | 日立比亚机械股份有限公司 | Figuration processing method |
| CN201860514U (en) * | 2010-10-22 | 2011-06-08 | 春焱电子科技（苏州）有限公司 | PCB (printed circuit board) with PTH (plated through hole) semicircular hole |
| CN103179791A (en) * | 2011-12-21 | 2013-06-26 | 北大方正集团有限公司 | Metal half-hole forming method and printed circuit board manufacture method |
| KR20160121291A (en) * | 2015-04-10 | 2016-10-19 | (주)영진프로텍 | Half hole of pcb machining method and the pcb manufactured from the same |
| CN111712041A (en) * | 2020-06-02 | 2020-09-25 | 昆山飞繁电子有限公司 | Circuit board half-hole machining process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116669311B (en) * | 2023-06-06 | 2023-11-10 | 扬州京柏自动化科技有限公司 | PCB cuts burr integration equipment |
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