DRILLING SYSTEM AND METHODS FOR DEEP HOLE DRILLING

摘要

A deep hole drilling system and methods provide stability and cutting performance to produce deep holes having desired straightness. The system may include a replaceable cutting head provided with a center cutting member and first and second side cutting inserts. The tool provides a major diameter with the OD cutting margins on the replaceable side inserts, as well as possibly cutting margins on the center cutting member. Adjustment mechanisms are provided to adjust the center cutting member and/side cutting inserts.

主权项

1. A drilling system comprising a generally cylindrical body member having an outer surface, and a duct formed from a pair of openings in the outer surface and exiting through a rear of the body member, a replaceable cutting head mounted to the front end of the body member having a central cutting member with first and second cutting edges extending from the rotational axis of the cutting head, and first and second side cutting inserts, each having a cutting edge extending from adjacent the central insert to cut the major diameter of a hole, wherein the side cutting inserts are indexable and have at least two cutting edges.