How does PCB depanelling router work

How does PCB depanelling router work

There are many ways to de-panel the jigsaw circuit board into single boards, among which the use of PCB depanelling router is one of the methods generally adopted on fine mobile phone circuit boards.

Table of Contents
    Add a header to begin generating the table of contents

    What are advantages of PCB depanelling router

    ★ PCB depanelling router can do non-linear cutting. (V-Cut can only cut straight lines)

    ★ PCB depanelling router can ensure that the circuit board is completely cut, and there will be no continuous cutting problem.

    ★ PCB depanelling router is less likely to cause parts or solder joints to crack due to bending force, because there is less stress during cutting.

    ★ PCB depanelling router V-cut cutting, the circuit board will fall directly to the work table, which may damage the parts of the circuit board.

    ★ How to align the V-cut groove with the circular blade is a problem. If it is not aligned or operated improperly, the blade will jump out of the V-cut groove, cut the wrong position, and damage the circuit board.

    What are disadvantages of PCB depanelling router

    ● PCB depanelling router is more expensive than V-cut cutting machine.

    ● Supporting fixtures for circuit boards need to be customized for each board.

    ● Positioning holes need to be designed on the veneer for support when cutting into single-piece boards.

    Why some boards need to reserve edges

    This is because mechanical devices such as chains are used in the automatic process and PCB soldering process of circuit boards to transport the semi-finished products of circuit board assembly. The amount of solder paste printing is transferred to the Pick & Place machine, and how to pass through the reflow oven. These transfer devices are almost all completed by using chains, and the chains must be set at the front of the board.

    Left and right ends, and this is the biggest reason why circuit boards need board edges, because with the current mechanism technology, parts are not allowed to be placed where chains are used, and parts must be placed at a certain distance from the edge of the chain place, so that the parts will not be knocked off by the chain or affect its reliability.

    Another device that uses the edge of the board is the magazine rack for storing circuit boards, which uses multiple slot-like sockets to store assembled circuit boards.

    So, if your company’s circuit board assembly does not require chains to transport circuit boards or magazine racks at all, why does your company’s circuit boards need board edges?

    But this seems a bit impractical. There are more opportunities to save the edge of the board. Usually, there is enough space on the board, and all the parts can avoid the position of the chain, so that there is no need to use the edge of the board. It is measured that some punching machines and mounting machines have special needs such as digging and positioning.

    Whether it is necessary to reserve a V-cut groove when use PCB depaneling router

    Whether it is necessary to reserve a V-cut groove when use PCB depaneling router

    When using the PCB depaneling router to cut the connecting board, do you need to reserve grooves such as V-Cut on the edge of the connecting board? Use the PCB depaneling router to cut the connecting board, whether you need to keep the edge of the board depends on the situation in the above answer. As for whether you need to leave the V-cut groove, it is definitely not necessary, because the PCB depaneling router uses the preset path of the computer. 

    To define the cutting board, it is not positioned by grooves such as V-cut, so the problem comes, since it is positioned by computer, the path of each cutting will be exactly the same, at least roughly so! Therefore, we must prepare a fixed jig for the circuit board that is cut by the PCB depaneling router, so that the circuit board will appear in a fixed position when cutting the sub-board, so that the PCB depaneling router will not cut the wrong position.

    What are the requirements for the fixing fixture of the PCB depaneling router

    When using the PCB depaneling router to cut the circuit board, you need to use a fixed fixture to make the position of each cut consistent, and the PCB depaneling router uses a cutter head like a milling cutter, and the depth of the cutter head must be greater than the thickness of the circuit board when cutting, so the circuit board is best to reserve some hollowed-out space on the cutting path of the board, so that the milling cutter can be placed at a fixed depth before starting to cut, and the fixture must also avoid the walking path of the milling cutter to prevent the milling cutter from directly cutting the fixture and fixture or milling cutter damage. 

    In addition, each veneer must be fixed when cutting the boards. The purpose is to avoid the problem that the veneer directly falls between the jigs after all the indirect boards are cut off. Another purpose of fixing the veneer is because the milling. When the knife is cutting and running, there will be an outward force. If the veneer is not fixed, it will deflect, causing the problem of cutting the board.

    Since most circuit boards are designed with screw holes or other round holes

    Since most circuit boards are designed with screw holes or other round holes, most fixtures use positioning posts to pass through these round holes to fix the board. If it is really impossible to design a round hole in the board, you can also consider using the outer frame of the circuit board to fix it, but the size and tolerance of the outer frame of the circuit board must be specially marked and defined, and at least three points or more are required to be fixed. 

    FAQ

    ★ PCB depanelling router can do non-linear cutting. (V-Cut can only cut straight lines)
    ★ PCB depanelling router can ensure that the circuit board is completely cut, and there will be no continuous cutting problem.
    ★ PCB depanelling router is less likely to cause parts or solder joints to crack due to bending force, because there is less stress during cutting.

    ● PCB depanelling router is more expensive than V-cut cutting machine.
    ● Supporting fixtures for circuit boards need to be customized for each board.
    ● Positioning holes need to be designed on the veneer for support when cutting into single-piece boards.

    This is because mechanical devices such as chains are used in the automatic assembly process of circuit boards to transport the semi-finished products of circuit board assembly. The paste printing is transferred to the Pick & Place machine, and how to pass through the reflow oven. These transfer devices are almost all completed by using chains, and the chains must be set at the front of the board. Left and right ends, and this is the biggest reason why circuit boards need board edges.

    Related Posts

    Exploring the Role of PCB Fuse in Circuit Protection and Safety

    Exploring the Role of PCB Fuse in Circuit Protection and Safety

    In the realm of electronic circuit design and manufacturing, ensuring the safety and reliability of electrical systems is paramount. One crucial component that plays a ...
    Mastering High-Frequency PCB

    Mastering High-Frequency PCB: From Concept to Production

    In the rapidly advancing world of electronics, the demand for high-frequency PCB continues to soar. From wireless communication systems to radar applications, the need for ...
    How many kinds of the common PCB defects?

    How many kinds of the common PCB defects?

    During the production and processing of PCBs, various defects may occur due to various reasons. These defects not only affect the performance of the PCB ...
    Short Circuit Unveiled

    Short Circuit Unveiled: Causes, Effects, and Solutions

    In the vast domain of electrical engineering, few phenomena hold as much significance and potential danger as the short circuit. A short circuit isn't merely ...
    The Essentials of Solder Joints : A Comprehensive Guide

    The Essentials of Solder Joints : A Comprehensive Guide

    Solder joints are the fundamental building blocks of electronic assemblies, forming the connections that enable the functionality and reliability of countless devices in our modern ...
    Request a Quote

    Leave a Comment

    Your email address will not be published. Required fields are marked *

    en_USEnglish
    Scroll to Top