Method of attaching a rotatable cutting bit shield

Details Method of attaching a rotatable cutting bit shield Method of attaching a rotatable cutting bit shield

1987-04-10

1989-04-25

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29520, B23P 1102

Patent

active

048234540

ABSTRACT:
A rotatable cutting bit shield and method and apparatus for attaching the shield onto cylindrical cutting bit shafts uses an annular metal ring having the shape of an inverted dish, and a centrally located hole through the ring. The diameter of the hole is initially larger than the diameter of the cutting bit shank. Compressive pressure exerted on the annular upper and lower faces of the ring by the apparatus according to the method causes the ring to deform into a flatter, more disc-shaped structure. This deformation causes the diameter of the central hole in the ring to shrink, captivating the ring axially between larger diameter annular flanges on the cutting bit shank.

REFERENCES:
patent: 4159746 (1979-07-01), Wrulich et al.

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