直径小于一毫米以下的刃具一般称为小刃具,由于它的加工难度大、废品率高、质量不易保证,特别是小螺纹工具难度更大,因此国内有生产能力的工具厂和大厂的工具车间都不愿承接这类工具生产任务。本厂生产航空器表需用M0.55×0.15板牙,向外单位订货,每套竟高达万元,为节约开支,保障供应,我厂工具科汪克勋等同志通 Cutting tools with a diameter of less than one millimeter are generally referred to as small cutting tools. Because of its difficult processing, high reject rate, and unsatisfactory quality, especially for small-threaded tools, it is more difficult for the tool manufacturers and manufacturers in China. The workshop is reluctant to undertake the task of producing such tools. The factory production of aircraft tables need to use M0.55 × 0.15 die, the external units to order, each set up as much as 10,000 yuan, in order to save costs and protect the supply, our factory tool branch Wang Kexun and other records