Cutting tool
AssigneeSMA Controls, Inc.
InventorAlbert T. Brennan
Life of this patent
Estimating the term…
Abstract
A portable tube end cutting tool includes a tool support shaft with an alignment assembly at one end for insertion into the tube whose end surface is to be machined and a cutter head assembly mounted for rotation about the support shaft. The tool portion to be inserted into the tube space adjacent the tube end to be machined is compact and is adapted to be locked in accurate alignment by incremental rotation of the support shaft over small angular increments, and is particularly useful where the tube surfaces to be machined are located in confined or relatively inaccessible working places.
Claims9
A portable tube end cutting tool comprising a tool support shaft with an alignment assembly at one end for insertion into the tube whose end surface is to be machined,
- ratchet structure fixed to said support shaft,
- a cutter head assembly mounted for rotation about the axis of said support shaft,
- a first drive for moving said cutter head assembly axially relative to said shaft, a second drive for driving said cutter head assembly in rotation, and
- an actuation mechanism for said alignment assembly that includes an asymmetrical drive mechanism that includes selector structure with latch portions arranged for alternate engagement with said ratchet structure for rotating said support shaft in a predetermined direction to actuate said alignment assembly while allowing reset of said asymmetrical drive mechanism without movement of said support shaft in the opposite direction.
A portable tube end cutting tool comprising a tool support shaft with an alignment assembly at one end for insertion into the tube whose end surface is to be machined, said shaft having a threaded section at the end opposite said alignment assembly,
- a cutter head assembly mounted for rotation about the axis of said support shaft,
- a first drive cooperating with said threaded section for moving said cutter head assembly axially relative to said shaft, a second drive for driving said cutter head assembly in rotation, said second drive including a gear housing and a drive motor whose axis is parallel to but offset from said shaft axis, and
- an actuation mechanism for said alignment assembly that includes an asymmetrical drive mechanism coupled between said gear housing and said support shaft for rotating said support shaft in a predetermined direction to actuate said alignment assembly while allowing reset of said asymmetrical drive mechanism without movement of said support shaft in the opposite direction, the coupling of said asymmetrical drive mechanism between said gear housing and said support shaft including a spline, and said cutter head assembly including a sleeve that is mounted for rotation about said support shaft and is located within said gear housing between said spline and said alignment assembly.
Dependencies are inferred from the claim text.