摘要:
A single-edged milling tool has a shaft section and a machining section. A face cutting edge is formed on a distal end of the machining section. The face cutting edge extends radially from an outside end at an outer peripheral edge to an inside end close to the axis of rotation. The face cutting edge has an outer peripheral planar portion at a constant planar distance to a reference plane extending perpendicular to the axis of rotation. An oblique portion connects the planar portion to the inside end. The oblique portion of the face cutting edge is closer to the reference plane than the planar portion. The distance of the face cutting edge from the reference plane in the oblique portion diminishes continuously starting out from the planar portion to the inside end of the face cutting edge.
摘要:
Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (γa, γr) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling.
摘要:
Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (γa, γr) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, possibly following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
摘要:
A micro-needle array is provided that may be used to deliver a bioactive agent to a therapeutic target. The micro-needle array preferably includes a substrate, a plurality of micro-needles integral with the substrate, and a bioactive agent. At least one micro-needle preferably includes a top surface, a bottom surface, a side surface, and a cavity defined by an inner surface. The bioactive agent may be disposed on the substrate and the plurality of micro-needles. The at least one micro-needle may further include a slit connecting the cavity to an aperture, the slit extending from the top surface to the bottom surface. A plurality of micro-needles on a patch is also disclosed for transdermal drug delivery applications.
摘要:
A milling cutter includes a cutting portion including a depression portion and a sidewall surrounding the depression portion, wherein an exterior surface of the sidewall is a cylindrical surface, each of two parts of an internal surface of the sidewall is a slanted surface, so as to form two teeth. The cutting portion is a cylinder with a free end cut off by two virtual surface whose sectional view is V-shaped to form two teeth symmetrical with each other, and the depression portion is defined in the free end.
摘要:
Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (γa, γr) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, possibly following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
摘要:
Disclosed herein is a tool bit comprising a shank including a cylindrical base portion having an axis and a diameter, an elongated end portion of generally cylindrical shape and having an axis extending coaxially with the axis of the base portion, a diameter less than the diameter of the base portion, and an outer cylindrical periphery, which shank end portion includes therein a recess extending lengthwise of the end portion and being of right angle shape in a cross-section extending transversely of the end portion axis, which recess cross-section is defined by a long face extending in parallel spaced relation to a radius extending from the end portion axis and including an outer end at the cylindrical outer periphery and an inner end, and a short face extending from the inner end to the cylindrical outer periphery, and a connecting portion joining the end portion and the base portion and tapering from the base portion diameter to the end portion diameter, and a carbide insert brazed in the recess and having a transverse generally rectangular cross-section with a length extending along the short face and beyond the outer cylindrical periphery of the end portion, which carbide insert is sharpened to provide a cutting edge.
摘要:
An end mill includes a major-diameter shank, a cone-shaped connector portion disposed at the end of the shank, a minor-diameter body disposed by way of the connector portion coaxially therewith, a toothed element disposed at the leading end of the body, an installation recess dented slightly in the toothed element, and a cutting edge held in the installation recess so as to swell in the shape of an arc to protrude from an outer peripheral face of the body.
摘要:
A tool bit providing a combined drill bit and milling bit is disclosed herein. The tool bit in one embodiment includes a working section having a longitudinally extending central axis, an O-flute extending along the working section, and a tooth formed at a tip portion of the working section, the tooth offset from the central axis.
摘要:
A milling cutter includes a cutting portion including a depression portion and a sidewall surrounding the depression portion, wherein an exterior surface of the side wall is a cylindrical surface, at least a part of an internal surface of the side wall is a slanted surface, so as to form at least one tooth.