Horn DR Small quick-change reamers reduce costs

A modular system for changing small, indexable-insert reamers in a machine spindle quickly with a high degree of repeatability has been introduced by Horn Cutting Tools. Called DR Small, the tooling comprises four sizes from 13.1 down to 7.6 mm diameter, and is said to be a cost-effective alternative to using solid carbide reamers.

DR Small is designed to raise productivity and cut costs by eliminating clocking in the interchangeable head each time it is exchanged, thereby reducing idle time. Such quick-change tooling has the added advantage that a manufacturer does not have to buy extra reamers to maintain production while worn tools are sent away to be reground.

Horn’s patented system is believed to be the only quick-change method of attaching a small reamer head to a shank, without the need for locking screws. The precision interface features keys and slots for rapid, secure attachment; repeatability of position being within 5 micron.