A gear forming tool includes an outer sleeve having an outer sleeve aperture and an inner sleeve having an inner sleeve aperture in fluid communication with the outer sleeve aperture, a tool holder disposed within the outer sleeve, and a 3D printed gear cutting tool with a plurality of tool cutting edges and a plurality of capillaries attached to the tool holder. The tool holder has a plurality of fluid channels configured to be in fluid communication with the inner sleeve aperture and the plurality of capillaries of the 3D printed gear cutting tool such that cutting fluid flows through the outer sleeve, the inner sleeve, the plurality of fluid channels of the tool holder, and the plurality of capillaries to the plurality of tool cutting edges.

The present invention provides a tool body that is rotated around a central axis, with a central part thereof being assembled onto an arbor, in which the tool body includes a plurality of recessed parts provided circumferentially between the central part and an outer peripheral part, as viewed from the front side opposite to an assembly side with respect to the arbor, and the recessed parts are each formed so as to have a cross-sectional shape that is gradually narrowed in a depth direction.

The present invention provides a tool body that is rotated around a central axis, with a central part thereof being assembled onto an arbor, in which the tool body includes a plurality of recessed parts provided circumferentially between the central part and an outer peripheral part, as viewed from the front side opposite to an assembly side with respect to the arbor, and the recessed parts are each formed so as to have a cross-sectional shape that is gradually narrowed in a depth direction.

A circumferential milling tool (10) for cutting metal is described, which comprises a milling cutter body (14) that can be rotated about a tool axis (12) and has at least two cutting edge groups. The arrangement of the first cutting edge group results in a first average chip thickness for the cutting edges (16) of the first cutting edge group and a second average chip thickness for the cutting edges (18, 20, 22, 24, 26) of the second cutting edge group. The first average chip thickness and the second average chip thickness are substantially equal. A method for arranging cutting edges (16, 18, 20, 22, 24, 26) on a circumferential milling tool (10) that can be rotated about a tool axis (12) is presented as well.

A circumferential milling tool (10) for cutting metal is described, which comprises a milling cutter body (14) that can be rotated about a tool axis (12) and has at least two cutting edge groups. The arrangement of the first cutting edge group results in a first average chip thickness for the cutting edges (16) of the first cutting edge group and a second average chip thickness for the cutting edges (18, 20, 22, 24, 26) of the second cutting edge group. The first average chip thickness and the second average chip thickness are substantially equal. A method for arranging cutting edges (16, 18, 20, 22, 24, 26) on a circumferential milling tool (10) that can be rotated about a tool axis (12) is presented as well.

A cutting tool with interconnected arms that increases the stiffness to weight ratio of the cutting tool is described. The principles of the invention can be applied to any cutting tool, such as a reamer, a milling cutter, a slotting cutter, and the like. In one example, a cutting ring includes a cutting head assembly with a leading arm, a trailing arm, and a cutting head supported by the leading arm and the trailing arm. The trailing arm interconnects with the leading arm of an adjacent cutting head assembly, and the leading arm interconnects with a trailing arm of another adjacent cutting head assembly. As a result of this interconnection of arms, the axial, radial and tangential stiffness to weight ratio of the cutting tool is increased. A support member may be included to further increase the stiffness to weight ratio.

A socket body (1) comprises a socket space (3) which is delimited by a socket wall (2), extends along a center axis (M), wherein the socket space (3) has a socket opening (22), which is surrounded by an end surface (6). A notch (4) extends through the socket wall (2) at an angle (α) to the center axis (M) such that a spring lug (5) is formed, which spring lug (5) is bent into the socket opening (3). The notch (4) has a right-hand portion (7) and a left-hand portion (8), wherein a center plane (ME) extends through the center axis (M) centrally between the two portions (7, 8). As seen from the outer side of the socket body (1), an upper surface (16) of the notch (4) intersects exclusively the lateral surface (11) of the socket wall (2), but not the end surface (6).

A socket body (1) comprises a socket space (3) which is delimited by a socket wall (2), extends along a center axis (M), wherein the socket space (3) has a socket opening (22), which is surrounded by an end surface (6). A notch (4) extends through the socket wall (2) at an angle (α) to the center axis (M) such that a spring lug (5) is formed, which spring lug (5) is bent into the socket opening (3). The notch (4) has a right-hand portion (7) and a left-hand portion (8), wherein a center plane (ME) extends through the center axis (M) centrally between the two portions (7, 8). As seen from the outer side of the socket body (1), an upper surface (16) of the notch (4) intersects exclusively the lateral surface (11) of the socket wall (2), but not the end surface (6).

The disclosure relates to a thermally insulated pipe system comprising a pipe having an outer diameter and a thermally insulating pipe section mounted on said pipe, said pipe section comprising two longitudinal parts each having a longitudinal opening, providing an aperture for accommodating the pipe whereby the two longitudinal parts are facing to each other in a symmetry plane, whereby two webs are provided in each longitudinal opening of the parts, each web extending substantially to the symmetry plane and being arranged under an angle (α) between 45° and 90° relative to the symmetry plane, thereby incorporating a first groove between the webs and second grooves between each of the webs and a surface of the longitudinal opening.

An internal milling cutter includes a carrier disk having a centre axis defining an axis of rotation of the milling cutter, a plurality of separated tool holder segments removably mounted at the inner circumference of the carrier disk, and at least one clamp for each tool holder segment mounted either on the carrier disk or on the tool holder segment. Each of the tool holder segments at its inner circumference includes at least one cutting insert seat with a mounting element for a cutting insert or at least one cutting edge. The clamp is located and arranged such that it generates a force in the axial direction pressing the axial contact surface of the tool holder segment onto the axial abutment surface of the carrier disk, and the clamp is mounted movably in a radial direction of the carrier disk between a locking position and a releasing position.