PCB Tech - Talking about the V-cutting Skills of Circuit Board

Talking about the V-cutting Skills of Circuit Board

I have talked about so much knowledge of related circuit boards. I don’t know what you know and how much you have absorbed. The so-called (V-cut) means that the printed circuit board(PCB board) manufacturer uses the printed circuit board (PCB board) in the specific position of the PCB board in advance according to the customer’s drawing requirements. The dividing lines cut by the turntable cutter are intended to facilitate the use of the "De-panel" after the subsequent SMT circuit board assembly is completed, because the cut appearance looks like an English ( V) font, hence the name.

The circuit board V-Cut (V-Cut) is a process that divides the semi-finished product of the circuit board into a process that facilitates the subsequent processing. The process is to divide the semi-finished product with several units on the working board, just like opening the entire board of stamps to facilitate tearing off and opening the stamp hole. Of course, the circuit board also has stamp holes, but it is more for V-cutting, which is to grind a V-shaped groove on the circuit board with the grinding wheel of a V-cutting machine. Before V-cutting, you must carefully check the slotting distance. The error must not be large. Exceeding a certain level will cause the size of a single circuit board unit to be large or small. The V-groove on the edge of the positioning orifice plate is generally larger than the depth between the units, so that the components are difficult to break after welding, and they are easy to disperse if they are too deep. Therefore, the V-cutting depth control is a difficult point. The V-cutting depth of different plates is different. different.

Generally, the production of bare circuit boards will first do the panelization and break-away operations, so when the circuit board is printed (pasted) all the parts and the assembly is completed, it is of course necessary to carry out "dividing". Only when the board is installed in the machine can the board be installed in the machine, because usually the whole product does not install more than two identical assembly boards (PCBA).

The circuit board v is cut too deep and cannot be remedied by means of rework or repair, but it can be started from the SMT end to make the PCB as usable as possible. Because the V-cut is too deep, the number of connected materials is reduced, and it is easy to deform or even break the PCB board when exposed to high temperatures. At this time, a mold can be made to fix the PCB, for example, the PCB is placed in the wire mesh for reflow soldering, so that the PCB is supported and will not break. The PCB can be mounted normally, so there is no loss.

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