总铜厚3mm以上超厚铜板量产的专项技术研究

Special technical research for heavy copper panel's mass production with total thickness above 3mm

对厚铜板进行长期稳定的量产是保证其快速而稳定发展的关键,我公司曾经运用特殊的断屑工艺,并通过对刀具、钻孔参数的优化等多方面的努力成功解决了超厚铜板在钻孔过程中存在的一系列问题。数控钻床主轴长期在重载荷作用下对其精度、扭力的损伤包括对特殊刀具的采购以及对现场管理等方面较高的要求等因素严重影响并制约了厚铜板的发展,如何使用常规刀具在中等扭力为300 g的主轴上对总铜厚3 mm以上的超厚铜板进行高速钻削成为新课题。本文就具体存在问题、解决方案、技术思路、效果展示等方面对厚铜板常规化量产的关键技术进行了详尽描述,主要着眼于钻孔量产时的几个关键点,即钻削抗力、切削温度、钻削参数、主轴维护保养等。

The key of heavy copper panel’s development rapidly and steadily is to guarantee its long-term and steady mass production with high speed, high efficiency and good quality. DPEC had ever resolved a series of problems during drilling process of heavy copper panel by using special copper scale breaking craft and through optimizing drills and drilling parameters. If the principal axis of the numerical control drill press works under the overloading situation for a long time, the precision of it will decrease, and the torque force will be damaged. On the other hand, the special drill and high requirement of field management will cause high cost, which will restrict heavy copper board’s development seriously. So now it is a new problem to use normal drills to drill the total above 3mm heavy copper panel with high speed by using the principal axis with middling torque force （300g）. This article detailed describes the pivotal technic of the heavy copper panel’s normal mass production from the sides of the existing problem, solution project, technical train of thought and result show. And this article mainly focuses several key point, namely the drilling force resistance, cutting temperature, drilling parameter, maintenance for principal axis, etc.