Tool bit with multiple cutting tips
AssigneeXerox Corporation
InventorsRonny W.F. van Asten, Theo G.M.J. Gommans, Tinus Zuetenhorst
Life of this patent
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Abstract
A tool bit suited to use in a machining apparatus for lathing of photoreceptor blanks includes a cutting portion which defines a plurality of projections. During lathing, the projections extend into the blank successively greater distances. When the blank is rotated, each projection cuts a successively radially inward portion of the workpiece. The resulting swarf is thinner and generally easier to handle than for a tool with a single cutting edge, thereby enabling vacuum suction of the swarf.
Claims23
A tool bit for a machining apparatus comprising:
- an attachment portion;
- and
- a cutting portion supported by the attachment portion and defining a plurality of projections for cutting an associated workpiece which is rotatably mounted on the machining apparatus, each of the projections defining a tip, the tips being spaced in a first direction, a second of the tips extending beyond a first of the tips in a second direction such that in operation, the first projection cuts a first portion of the workpiece and the second projection cuts a second portion of the workpiece, the second portion being radially inward of the first portion.
A machining apparatus comprising:
- a workpiece mounting apparatus which supports an associated workpiece for rotation about an axis, the workpiece having a radius perpendicular to the axis;
- a tool bit mounted for lathing the radius, the tool bit comprising:
- a cutting portion which defines a plurality of projections, the projections being spaced apart by recessed reliefs, a first of the projections having a tip which is spaced from a tip of a second of the projections such that in operation, the first projection cuts a first portion of the workpiece and the second projection cuts a second portion of the workpiece, radially inward of the first portion.
A method for machining a workpiece comprising:
- mounting a workpiece on a machining apparatus for rotation about an axis;
- mounting a tool bit for machining a surface of the workpiece;
- rotating the workpiece about the axis, the workpiece surface being engaged by a plurality of tips of the tool bit, which successively project further towards the axis of rotation of the workpiece such that the projections each remove a strip of material from the workpiece.
Dependencies are inferred from the claim text.