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US 11,590,585 B2Granted
Drill device and method of manufacturing the same
AssigneeSandvik Intellectual Property AB
InventorsUlrika Brohede, Maria Teike
Life of this patent
Estimating the term…
Abstract
A drill device includes a drill tip and a drill body having a rear portion. The drill tip includes at least a first clearance surface and the drill body includes at least a first land having a margin. An edge is disposed between the first clearance surface and the margin. A textured area having a plurality of recesses extends along at least a portion of the margin, in the direction of the rear portion of the drill body, from a position of 200 μm from the edge, from a position on the least first clearance surface, or from a position therebetween.
Claims13
A drill device comprising:
- a drill tip having at least a first clearance surface;
- a drill body having a rear portion at least a first land having a margin;
- an edge disposed between the first clearance surface and the margin;
- and
- a textured area including a plurality of recesses in the form of elongate continuous grooves extending along at least a portion of the margin in direction of the rear portion of the drill body from a position of 200 μm from the edge, from a position on the at least first clearance surface, or from a position therebetween, wherein the plurality of recesses are arranged such that a ridge is formed between adjacent recesses, wherein the plurality of recesses have a predetermined periodicity (P), wherein the plurality of recesses extend in an extension direction over the portion of the margin that is in contact with the surface of a bore in a drilling operation, the extension direction being 20° from or within 20° from a longitudinal direction of a longitudinal axis of rotation of the drill device, wherein a depth of the grooves ranges from 1-50 μm and the periodicity (P) ranges from 20-30 μm, wherein the periodicity is determined from an end of a top surface of one ridge across an adjacent groove to a corresponding end of an end surface of a next ridge, each of the grooves having a top width (TW) and a bottom width (BW), the top width (TW) being greater than the bottom width (BW), and wherein (TW)≤(P).
2 more elements
A drill device comprising:
- a drill tip having at least a first clearance surface;
- a drill body having a rear portion and at least a first land having a margin;
- an edge disposed between the first clearance surface and the margin;
- and
- a textured area including a plurality of recesses in the form of elongate continuous grooves extending along at least a portion of the margin in a direction of the rear portion of the drill body from a position of 200 μm from the edge, from a position on the at least first clearance surface, or from a position therebetween, wherein the plurality of recesses are arranged such that a ridge is formed between adjacent recesses, wherein the plurality of recesses extend in an extension direction over the portion of the margin that is in contact with the surface of a bore in a drilling operation, the extension direction being 20° from or within 20° from a longitudinal direction of a longitudinal axis of rotation of the drill device, and wherein the recesses are distributed over the textured area with a predetermined periodicity, wherein the recesses have a predetermined top width and a predetermined depth, wherein the predetermined periodicity is selected in the interval of 20-30 μm, wherein the periodicity (P) is determined from an end of a top surface of one ridge across an adjacent groove to a corresponding end of an end surface of a next ridge;
- and
- wherein the predetermined top width (TW) is selected in the interval of 10-300 μm;
- and
- wherein the predetermined depth is selected in the interval of 2-5 μm;
- and
- wherein each of the grooves have a bottom width (BW), the top width (TW) being greater than the bottom width (BW), and wherein (TW)≤(P).
8 more elements
Dependencies are inferred from the claim text.