External position is another positioning method is to use the board as an external add positioning hole positioning holes milling plate. The advantage is easy to manage, if pre-production specification is good, paneling template generally about fifteen species. Because it does not use an external position once the board milling CNC drilling down, otherwise it is very easy to damage the circuit board, especially puzzle, because the cutter and suction device will cause the board to bring out the circuit board damage and broken cutters. The use of sub-binding sites remain milling method, first paneling paneling When finished the program pause and then the plate is fixed with tape, and the second execution of the program, the use of 3mm to 4mm drill to drill out the point of integration. The advantage is less cost small manageable template CNC milling machine, milling all boards can no mounting holes and positioning holes sieve PCB CNC drilling, small craft personnel to facilitate the management, especially for pre-production CAM and other production personnel can simply oriented, while optimizing the utilization of the substrate. The disadvantage is that the use of the drill, the board shape leaving at least 2-3 points unsightly bumps, may not meet customer requirements, milling long time, labor intensity slightly. Making the frame belongs to the circuit board in advance of production, plating frame design not only affect the uniformity and the like, and also have an impact on the paneling, such as design or produce bad frame deformable portion mounted on the small block when paneling Small blocks of high-speed CNC drilling waste, waste generated block or clog the suction tube touched off high-speed rotating cutter, especially in the framework of deformation caused by deformation of the finished board paneling external position, the other under the knife point and good working order of selection, make the frame to maintain maximum intensity fastest speed. Selection is not good, the frame is easily deformed leaving PCB scrapped. Desktop CNC drilling method _ Xin professional manufacturer of CNC (certified) _ Qinghai CNC drilling provided by Xin CNC Machinery Co., Ltd. Jinan law. CNC Machinery Co., Ltd. Jinan law Xin (www.jnfxsk.com) Shandong Jinan, CNC machine leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xin NC leadership in France with the staff warmly welcome all inquiries negotiations to create law Xin NC a better future.