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US 2022/0161336 A1Published application
Rotary cutter for machining materials
AssigneeNew Tech Cutting Tools, Inc.
InventorsSteven M. SWIFT, Luke Tyler SWIFT
Life of this patent
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AssigneeNew Tech Cutting Tools, Inc.
InventorsSteven M. SWIFT, Luke Tyler SWIFT
Estimating the term…
Novel endmills are provided. Such endmills have a body with outside diameter (OD), and outer surface, and a longitudinal axis, a plurality of flutes, helical in some embodiments. Flutes include a narrow leading edge land portion with circular segment profile and having flute cutting edge portions along a substantially uniform circumferential location, with an eccentric relief margin rotationally rearward of the narrow leading edge land portions. Face portions are provided with face cutting edge portions, and with a first dish portion adjacent each of the cutting edge portions sloping inwardly and downwardly generally toward a central longitudinal axis at a first dish angle alpha (α). Corner blend portions extend from flute cutting edge portions to the face cutting edge portions. Corner blend portions are provided in a variety of profiles, including an embodiment wherein the profile of the corner blend portions are truncated before the segment of curvature becomes tangential to the face cutting edge portions. In various embodiments, one or more coolant passageways are provided, and in an embodiment, an exit port for coolant is provided at the center of rotation of the end face portion.
An endmill, the endmill having an outside tool diameter, a core diameter, and an end face portion, wherein the endmill comprises flute cutting edge portions and face cutting edge portions, and wherein the endmill further comprises corner blend portions extending from flute cutting edge portions to face cutting edge portions, wherein the face cutting edge portions slope inwardly and downwardly at a first dish angle alpha (α) in a range of from about five point five (5.5) degrees to about twenty five (25) degrees, and wherein the endmill further comprises one or more coolant passageways therethrough, and wherein at least one of the one or more coolant passageways exits at an exit port located on the end face portion, and wherein the exit port is located at a center of rotation of the end face portion.
An endmill, the endmill having an outside tool diameter, a core diameter, and an end face portion, wherein the endmill comprises flute cutting edge portions and face cutting edge portions, and wherein the endmill further comprises corner blend portions extending from flute cutting edge portions to face cutting edge portions, wherein the face cutting edge portions slope inwardly and downwardly at a first dish angle alpha (α) in a range of from about five point five (5.5) degrees to about twenty five (25) degrees, and wherein the endmill further comprises a single axially oriented coolant passageway therethrough, and wherein the coolant passageway exits at an exit port located at the center of rotation of the end face portion.
An endmill, the endmill having an outside tool diameter, a core diameter, and an end face portion, wherein the endmill comprises flute cutting edge portions and face cutting edge portions, and wherein the endmill further comprises corner blend portions extending from flute cutting edge portions to face cutting edge portions, wherein the face cutting edge portions slope inwardly and downwardly at a first dish angle alpha (α) in a range of from about five point five (5.5) degrees to about twenty five (25) degrees, and wherein the endmill further comprises a single axially oriented coolant passageway therethrough, and wherein the coolant passageway exits at an exit port located at the center of rotation of the end face portion, so that a cooling medium passing through the coolant passageway exits only in an axial direction.
An endmill, the endmill having an outside tool diameter, a core diameter, and an end face portion, wherein the endmill comprises flute cutting edge portions and face cutting edge portions, and wherein the endmill further comprises corner blend portions extending from flute cutting edge portions to face cutting edge portions, and wherein the endmill further comprises a single axially oriented coolant passageway therethrough, and wherein the coolant passageway exits at an exit port located at the center of rotation of the end face portion.
An endmill, the endmill having an outside tool diameter, a core diameter, and an end face portion, wherein the endmill comprises flute cutting edge portions and face cutting edge portions, and wherein the endmill further comprises corner blend portions extending from flute cutting edge portions to face cutting edge portions, and wherein the endmill further comprises a single axially oriented coolant passageway therethrough, and wherein the coolant passageway exits at an exit port located at the center of rotation of the end face portion, so that a cooling medium passing through the coolant passageway exits only in an axial direction.
Dependencies are inferred from the claim text.