A Guide for the Construction and Operation of Drill-Up

摘要

This guide provides detailed information for the construction of a single-speed version of Drill-Up and instructions for its installation and operation. Drill-Up is an instrument designed to prevent breakage of small-diameter drills used on automatic-feed drilling machines with a spindle retract ability. The method and applications have been previously described in the references given. The hardware and software necessary to construct an instrument for use at a single selected drilling speed are described. The circuit diagram and source program are included.