In PCB array design, the V-shaped dividing line between the two veneers and the veneers and the process edge is formed into “V” shape. After component welding, it can breaks off, so it is called V-CUT.
The purpose of the V – cut
Design V – the main purpose of the cut is a convenient member points after PCB assembly board, board PCBA points tend to use when V – cut machine (Scoringmachine), cut the PCB in advance good v-shaped grooves of huai Scoring circular blade, and then push hard in the past, some machines are automatically send board design, as long as a button, the blade will automatically move across the location of the circuit board V – cut cut the board, the height of the blade can be adjusted up and down in accordance with different V – the thickness of the cut.
Note: In addition to V-cut Scoring, PCBA Scoring also has other methods, such as RouTIng and stamp holes, etc.
Although PCB V – Cut above can also be used to break or break off manually, the V – the position of the Cut, but is not recommended to use broken or break off manually, the V – Cut, because it is because of the screws manually bent on PCB, it is very easy to cause PCBA above electronic parts is broken, and especially capacitance parts, thus reduce the yield and reliability of the products, some problems and even to use after a period of time will gradually emerge.
V-CUT design and usage limitations
While the V-Cut allows us to easily separate the boards and remove the edges, there are design and usage limitations.
Angle definition of V-CUT
Generally speaking, V-CUT can be defined at 30°, 45° and 60° angles. The most commonly used Angle is 45°.
The higher the Angle of the V-cut, the more plates will be eaten by the V-cut at the edge of the board, and the lines on the opposite PCB will have to be retracted more to avoid being Cut by the V-cut or damaged when cutting the V-cut.
The smaller the V-cut Angle is, the better the space design of PCB in theory, but it is not good for the life of the V-cut saw blade in PCB board factory, because the smaller the V-cut Angle, the thinner the blade of the saw, and the easier it is to wear and break the blade.
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