Drill bit assembly having aligned features

摘要

A drill bit assembly has a bit head and a pin body. The bit head comprises a cutting end, an opposite connecting end with an engagement section, and a feature facing the connecting end. The pin body comprises a tubular body with an axial bore therethrough, a connecting end with an engagement section and a feature facing the connecting end. The drill bit assembly is manufactured by positioning the pin body connecting end with the bit head connecting end such that the pin body and bit head engagement sections overlap with a gap therebetween, and the pin body and bit head features are aligned; injecting a thermoplastic or other connecting material in liquid form between the bit head and pin body engagement sections and into the gap; and solidifying the thermoplastic or other connecting material such that the bit head and pin body are mechanically coupled together at their connecting ends and their features are securely aligned.

主权项

1. A method of manufacturing a drill bit assembly having a bit head and a pin body, the bit head comprising a cutting end, an opposite connecting end with an engagement section, and a feature within a wall of the bit head and facing the connecting end; and the pin body comprising a tubular body with an axial bore therethrough and comprising a connecting end with an engagement section and a feature within a wall of the tubular body and facing the connecting end; the method comprising:
(a) positioning the pin body connecting end with the bit head connecting end such that the pin body and bit head engagement sections overlap with a gap therebetween, and the pin body and bit head features are aligned; (b) injecting a connecting material in liquid form between the bit head and pin body engagement sections and into the gap; and (c) solidifying the connecting material such that the bit head and pin body are mechanically coupled together at their connecting ends and their features are securely aligned.