Reamer for machining of through-holes
AssigneeKennametal Inc.
InventorRoland Hereth
Life of this patent
Estimating the term…
Abstract
The invention relates to a reamer for machining through-holes, having a base body comprising a clamping region as well as a front-facing machining region with cutting elements, wherein the machining region comprises front-facing chip chambers and regions that are relief-ground on a circular cylindrical lateral surface defining the maximum radial dimension of the reamer in the machining region, which relief-ground regions are spaced apart from the perforated wall in a circular cylindrical through-hole, wherein the chip chambers and adjacent relief-ground regions are separated from one another by lateral surface portions.
Claims18
A reamer having a base body comprising:
- a clamping region;
- and
- a front-facing machining region with cutting elements, wherein the machining region comprises front-facing chip chambers and regions that are relief-ground on a circular cylindrical lateral surface defining the maximum radial dimension of the reamer in the machining region, such that the relief-ground regions are spaced apart from a perforated wall in a circular cylindrical through-hole being machined by the reamer, wherein the chip chambers and adjacent relief-ground regions are separated from one another by lateral surface portions, each chip chamber is bounded by a cutting edge in sections with the cutting edge extending up to the outer circumference, and wherein the machining region has a front side with a front face and a circumferential chamfer towards the lateral surface, wherein the cutting edge abuts the chamfer.
A reamer, having a base body comprising:
- a clamping region;
- and
- a front-facing machining region with cutting elements, wherein the machining region comprises front-facing chip chambers and regions that are relief-ground on a circular cylindrical lateral surface defining the maximum radial dimension of the reamer in the machining region, such that the relief-ground regions are spaced apart from a perforated wall in a circular cylindrical through-hole being machined by the reamer, wherein the chip chambers and adjacent relief-ground regions are separated from one another by lateral surface portions, wherein the lateral surface portions comprise a respective first leg arranged axially between a chip chamber and a relief-ground region and a second leg arranged between two relief-ground regions in the circumferential direction, the first legs each have a length in the circumferential direction of the base body and a width in the axial direction of the base body, wherein the length is at least two times greater than the width.
A reamer, having a base body comprising:
- a clamping region;
- and
- a front-facing machining region with cutting elements, wherein the machining region comprises front-facing chip chambers and regions that are relief-ground on a circular cylindrical lateral surface defining the maximum radial dimension of the reamer in the machining region, such that the relief-ground regions are spaced apart from a perforated wall in a circular cylindrical through-hole being machined by the reamer, the chip chambers and adjacent relief-ground regions are separated from one another by lateral surface portions, the lateral surface portions include a respective first leg arranged axially between a chip chamber and a relief-ground region and a second leg arranged between two relief-ground regions in the circumferential direction, the lateral surface portions separating the chip chambers and the relief-ground regions from one another are L-shaped, each chip chamber is bounded by a cutting edge in sections with the cutting edge extending up to the outer circumference, the machining region has a circumferential chamfer extending from a front face of the machining region to the lateral surface, wherein the cutting edge abuts the chamfer.
Dependencies are inferred from the claim text.