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US 11,607,737 B2Granted
Milling tool
AssigneeGuehring KG
InventorsRolf Ehrler, Martin Dallmann, Jakob Ebel
Life of this patent
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AssigneeGuehring KG
InventorsRolf Ehrler, Martin Dallmann, Jakob Ebel
Estimating the term…
A milling tool for producing chamfer surfaces at workpieces. It has a cylindrical shaft and a cutting part, which has at least two end cutting edges, which are each located on a cone jacket surface and which run in a spiraled convex manner in the direction of rotation, and which each extend from a radially outer cutting corner to an inner cutting corner on the end side. To broaden the area of application of the milling tool to processes, such as the “ramping” or the linear diagonal plunging, respectively, the circular milling, the spot-drilling, or the waterline milling, the end cutting edges merge at the inner cutting corner into center cutting edges, which are located on a cone jacket surface with a tip angle of above 180°, and which run with a positive chip angle into a region of the milling cutter center located in the milling cutter core.
A milling tool for producing chamfer surfaces at workpieces, the milling tool comprising a cylindrical shaft and a cutting part, the cutting part comprising at least two end cutting edges, which define a first cone jacket surface and which are each located on the first cone jacket surface such that each of the at least two end cutting edges are disposed entirely on the first cone jacket surface and each extend along the first cone jacket surface from a respective radially outer cutting corner to a respective radially inner cutting corner, each of the at least two end cutting edges running in a spiraled convex manner in a direction of rotation, each of the end cutting edges merging at the respective radially inner cutting corners with a respective center cutting edge, the center cutting edges are located on a second cone jacket surface, points on the second cone jacket are radially closer to an axis of the milling tool than points on the first cone jacket are, each center cutting edge running from a respective one of the radially inner cutting corners to points that are each closer to the axis of the milling tool than each radially inner cutting corner is, an axis of the first cone jacket surface and an axis of the second cone jacket surface lie on the axis of the milling tool, and the second cone jacket surface extends away from the radially inner cutting corners toward a vertex of the second cone jacket surface in a direction away from a vertex of the first cone jacket surface.
Dependencies are inferred from the claim text.