Drill or chisel tool mounting body - has mount shaped to reduce stiffness in zones of high stress to lower danger of metal fracture

摘要

The drill or chisel is formed from a steel body (1), with a diagonal slit (3) across its head. A hardened metal cutting tool (2) is soldered (4a) into this slot. The steel body is formed such that the width (x) of the body is less in the area (p) of high fracture stress than the width of the outer body, thus reducing the stiffness of the tool. USE/ADVANTAGE - Reduces risk of tool fracturing in the steel body mount.