Shearing hollow stock

Details Shearing hollow stock Shearing hollow stock

1976-07-06

1977-11-22

Watson, Robert C.

Cutting

By tool inside hollow work

One tool having only rectilinear motion

269 481, 225103, B23D 2100

Patent

active

040590364

ABSTRACT:
An internal member for supporting a hollow body during shearing in the form of a close-fitting solid body. The body comprises at least portions meeting in the shearing plane and each portion including at least one split ring having a single gap in its periphery to allow it to expand to fit the hollow body. Expansion may be effected by axial movement of frusto-conical plugs corresponding to and co-operating with frusto-conical inner surface in the rings. Each ring may either comprise a single component, preferably notched on its inner face to increase flexibility, or be in the form of a thin split cylindrical shell surrounding a plurality of inner segments.

REFERENCES:
patent: 2755093 (1956-07-01), Peter et al.
patent: 3434709 (1969-03-01), Ramsay
patent: 3567088 (1971-03-01), Anderson
patent: 3742186 (1973-06-01), Finkel et al.
patent: 3811632 (1974-05-01), Bassett
patent: 3955453 (1976-05-01), Carmichael et al.

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