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一、加工工艺简介 SZ-3型数控三轴印刷线路板金属组合冲模钻床是冲制印刷线路板插件孔金属组合冲模的专用数控机床,采用三个钻削头同时钻削上、中、下三块金属模板(厚度为8～20mm),钻削直径为φ0.8～φ3.5mm的小孔(绝大多数为φ1mm左右)。被加工孔的主要技术要求是:孔的坐标位置精度和孔与端面的垂直度。其钻削工艺为:三块平板工件在夹具上装夹好以后,先用φ1mm标准中心钻根据已输入电脑的坐标定位程序,在工件上钻出定位点孔,深度为0.5mm。定位点孔全部钻好后,换下中心钻,装夹上麻花钻,再根据原先程序,一次次将孔钻穿。
I. Introduction of Processing Technology SZ-3 CNC three-axis printed circuit board metal combination die-drilling machine is a special numerical control machine tool for punching the printed circuit board connector hole metal combination die, which adopts three drilling heads to drill the upper, middle and lower three Block metal template (thickness of 8 ~ 20mm), drilling diameter φ0.8 ~ φ3.5mm holes (the vast majority of φ1mm or so). The main technical requirements of the hole to be machined are: the coordinate accuracy of the hole and the perpendicularity of the hole and the end face. The drilling process is as follows: After the three flat workpieces are clamped in the fixture, first use the φ1mm standard center drill to drill the positioning hole according to the coordinate positioning program that has been input into the computer, and drill the positioning hole at a depth of 0.5mm. Locate all the hole drilling well, replace the center drill, twist on the folder on the fixture, and then according to the original procedure, again and again through the hole drilling.