Abrasive tool for small diameter hole machining
AssigneeEx-Cell-O Corporation
InventorWilliam G. Corley
Life of this patent
Estimating the term…
Abstract
An expandable abrasive tool is provided with an axially-extending slot receiving a single abrasive element and multiple axially aligned and axially spaced apart pockets located circumferentially from the slot with each pocket fixedly receiving an individual centering element for properly positioning and supporting the abrasive element in the hole. The axially spaced apart pockets space the centering elements apart in end-to-end relation and thereby allow torsional flexing of the tool body during hole machining without damaging the brittle centering elements. In an alternative version, multiple centering elements are received in spaced apart end-to-end relation in a single axially elongated slot instead of in individual pockets.
Claims10
An abrasive tool useful for machining a small diameter hole, comprising a hollow tool body having a long axis and a working end, abrasive means mounted for transverse adjustment on the working end, means in the tool body for adjusting the position of the abrasive means transverse to the tool axis, and a plurality of centering means fixedly mounted on the working end for properly positioning and supporting said tool and abrasive means in the hole, said centering means being circumferentially spaced from said abrasive means and arranged axially in end-to-end relation along the working end with sufficient space between their ends to allow torsional flexing of said tool body during machining without damaging said centering means.
An abrasive tool useful for machining a small diameter hole, comprising a hollow tool body having a long axis and a working end with an axially-extending first slot means and an axially-elongated second slot means disposed circumferentially from one another on the tool body, an abrasive means removably received in the first slot means, means in said hollow tool body for adjusting the position of said abrasive means radially relative to the tool body axis for abrasive diameter adjustment purposes, and a plurality of brittle centering means fixedly mounted in said second slot means for properly positioning and supporting the tool and abrasive means in the hole, said centering means being arranged axially in end-to-end relation along the working end with sufficient space between their ends to allow torsional flexing of said hollow tool body during machining without damaging said brittle centering means.
Dependencies are inferred from the claim text.