The emerging PCB boards in electrical and electronic devices undergo a long painstaking process of designing, processing and manufacturing before coming in their eventual form. Out of the many processes that these PCB boards undergo is the drilling process. It is during PCB fabrication that the designed PCB board needs hole to be drilled to the board so that sensors and component can then be soldered to it. In ancient days of PCB development when PCB boards were designed on the surfaces such as wood and fiberglass, holes were made onto the board via nails and other sharp objects. However those were not the appropriate and efficient ways. It took quite some time for the engineers to come up with accurate solution for drilling precise and accurate holes onto the PCB boards. In modern days circuit board drills are commonly used in order to perform drilling of holes on to the PCB board. Figure 1 shows a circuit board drill.
1.Circuit Board Drill
2.Process of Circuit Board Drilling
1.Circuit Board Drill
Market these days is full of circuit board drills of different colors, pins sizes and qualities. The core objective of using circuit board drill is to drill precise holes in fiberglass printed circuit boards, plastics and other laminates. Circuit board drills are basically micro drills in actual which aim at providing as much precision in drilling as possible. Circuit board drills provide ample rigidity and longer tool life despite being exposed to high temperature and abrasion. Customarily the circuit board drills possess a drill diameter equal to that of shank diameter in order to get smooth burr-free performance yet many other drill sizes are available for user’s convenience. Figure 2 shows a PCB board undergoing the process of drilling.
2.Process of circuit board drilling
In order to perform drilling of a PCB board the engineer must firstly use an X-ray drill which is used to locate the target points in the copper of the inner layer so that it gets easier to identify which points need to be drilled over the board. Initially machine drills registration holes that are meant for identification marks for the user to drill them later till center of the inner layer pads. Secondly in order to set the circuit board drill the user places the panel of exit material on the drill bed which targets at refraining drill from tearing the copper foil as it passes through the PCB board. Later further PCB panels along with aluminum entry foil are added to the drill bed. Circuit board drills provide lot of drill sizes option to the user so that the holes as per users requirement could be drilled on the PCB board. Figure 3 shows the various circuit board drills.
Circuit board drill seems like tedious task yet it holds immense significance in the designing of PCB boards as at the end of the functionality of the PCB board is being influence by the holes that connect the components to the board. With the advent of modern circuit board drills the drilling of holes onto the PCB board has become an easier task for the designers.