Cutting direction, the compensation method: When the cutter to cut sheet metal, there is a cutting surface is always facing cutter cutting edge, while the other side is always cutting edge against the cutter. The former, to be machined smooth surface, high dimensional accuracy. Spindle always rotates in the clockwise direction. So whether it is a fixed spindle CNC milling CNC table movement or movement of the table fixed spindle drilling machines, milling in the external contour of the PCB, to use the knife to go counterclockwise. This is commonly referred to as milling. The use of Climb mode when the circuit board inside the box or slot milling. Paneling compensation is installed automatically when the paneling machine automatically according to set values ??to make half of the center line offset milling cutter diameter set of cutters, CNC drilling process that radius distance, so that the shape and milling programmed consistent. At the same time as the machine has a compensation function must be noted that the direction of compensation orders and use the program, such as using the wrong command compensation board will shape more or less the equivalent of the size of the cutter diameter length and width. 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 positioning milling down once the board. Otherwise, the board is very easy to damage, especially puzzle, because the cutter and suction device will cause the board to bring out the circuit board damage and broken cutters. The combined use of sub-milling method points to stay, first paneling paneling when the program is over and then pause plate fixed with tape, perform deep hole CNC drilling program in the second paragraph, the use of 3mm to 4mm drill point will combine drill out. The advantage is less cost small manageable template can be milled in all plate without mounting holes and positioning holes of circuit boards, small craft personnel management easy CNC drilling machine models, especially the production of CAM and other pre-production personnel can be simplified, while optimize 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. Sieve CNC drilling, CNC professional manufacturing method Xin (certified), Anhui CNC drilling by CNC Machinery Co., Ltd. Jinan law Xin. 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.