Influence of feed motion features on small holes drilling process

Mechanical drilling is the basic method of machining of round small holes, less then 1 mm in diameter. By drilling in such range of sizes, it is required to apply special precision machines. In many cases they should ensure very sensitive and complicated feed motion execution, because the features of feed determine successful drilling. The paper describes and discusses feed drives applicated in precision drilling machines, methods and attributes of feed execution, with regard to minimising the risk of drill breakage, to improve the hole quality, and to limit the increase in production time.