US 5,906,458 AGranted

Reamer with clamping arrangement for adjustable cutting insert

AssigneeSeco Tools AB

InventorSimon Planche

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Abstract

An adjustable reamer includes a securing portion, a shank, a guide members, at least one cutting insert, an adjustment device for adjusting the insert, and a clamp for clamping the insert. The clamp is releasable from the shank. A first place of contact is created between the clamp and the shank, and a second place of contact is created between the clamp and the cutting insert. An angle between the first and second places of contact in relation to the rotational axis of the reamer is at least 100.degree., preferably larger than 135.degree..

Claims13

Dependent claims

A reamer comprising:

a securing portion;
a shank projecting forwardly from the securing portion and defining an axis of rotation, the shank including:
a recess extending radially inwardly through an envelope surface of the shank,
a base of the recess defined by a first support surface integral with the shank, and
an insert pocket adapted to support a cutting insert, the pocket including a second support surface integral with the shank and communicating with the recess, the second support surface lying parallel to a first reference plane containing the axis;
an insert supported on the second support surface;
an adjusting device mounted to the shank for adjusting an orientation of the insert relative to the axis;
a clamp disposed in the recess and releasably connected to the shank, the clamp including an outer surface at least a portion of which lies flush with the adjacent envelope surface of the shank, the clamp including a first abutment surface engaging the first support surface at a first place of contact, and
the clamp including a second abutment surface engaging the insert at a second place of contact, the first and second places of contact lying on opposite sides of a second reference plane extending perpendicular to the first reference plane and containing the axis, the first place of contact extending substantially to the envelope surface and lying closer to the envelope surface than to the axis, the first and second abutment surfaces forming therebetween a first angle which is not less than substantially 180 degrees;
a first reference line extending from the axis to the first place of contact forming a second angle with a second reference line extending from the axis to the second place of contact, the second angle being at least 100.degree.;
a fastener engaging the clamp and causing the first abutment surface to be pressed against the first support surface, and the second abutment surface to be pressed against the insert;
and
a pair of guide members mounted in the envelope surface of the shank in circumferentially spaced apart relationship, both of the guide members lying outside of the second angle as the shank is viewed in cross section.

10 more elements

Dependencies are inferred from the claim text.

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Abstract

A reamer comprising:

a securing portion;
a shank projecting forwardly from the securing portion and defining an axis of rotation, the shank including:
a recess extending radially inwardly through an envelope surface of the shank,
a base of the recess defined by a first support surface integral with the shank, and
an insert pocket adapted to support a cutting insert, the pocket including a second support surface integral with the shank and communicating with the recess, the second support surface lying parallel to a first reference plane containing the axis;
an insert supported on the second support surface;
an adjusting device mounted to the shank for adjusting an orientation of the insert relative to the axis;
a clamp disposed in the recess and releasably connected to the shank, the clamp including an outer surface at least a portion of which lies flush with the adjacent envelope surface of the shank, the clamp including a first abutment surface engaging the first support surface at a first place of contact, and
the clamp including a second abutment surface engaging the insert at a second place of contact, the first and second places of contact lying on opposite sides of a second reference plane extending perpendicular to the first reference plane and containing the axis, the first place of contact extending substantially to the envelope surface and lying closer to the envelope surface than to the axis, the first and second abutment surfaces forming therebetween a first angle which is not less than substantially 180 degrees;
a first reference line extending from the axis to the first place of contact forming a second angle with a second reference line extending from the axis to the second place of contact, the second angle being at least 100.degree.;
a fastener engaging the clamp and causing the first abutment surface to be pressed against the first support surface, and the second abutment surface to be pressed against the insert;
and
a pair of guide members mounted in the envelope surface of the shank in circumferentially spaced apart relationship, both of the guide members lying outside of the second angle as the shank is viewed in cross section.

10 more elements