Clamshell pipe lathe having improved bearing arrangement

Details Clamshell pipe lathe having improved bearing arrangement Clamshell pipe lathe having improved bearing arrangement

1995-01-30

1996-08-27

Rachuba, M.

Turning

Portable lathe for pipe turning

82101, B23B 322, B23Q 140

Patent

active

055490247

ABSTRACT:
A clamshell machining lathe for cutting and finishing pipes in industrial settings comprises a split-ring assembly, including a clamping ring that is positioned about the pipe, and journaled to the clamping ring is a rotatable gear ring that supports a tool block carrying a cutting tool. The improvement resides in the bearing arrangement used to journal the gear ring to the stationary clamping ring. One face of the gear ring includes an annular groove whose side walls define a bearing race. The race is dimensioned to receive a plurality of roller bearings therein, the roller bearings being affixed to a planar surface of the clamping gear in a circumferential arrangement so as to fit into the bearing race when the gear ring is coupled to the clamping ring. The arrangement can support greater loads without canting, thus reducing wear on the moving parts.

REFERENCES:
patent: 3661431 (1972-05-01), Wisecarver
patent: 4739685 (1988-04-01), Ricci
patent: 4939964 (1990-07-01), Ricci

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