An insert includes a cutting portion and a shaft portion. The cutting portion includes: a cutting edge that is located on a side of a first end; an end surface that is located on a side of the side of a second end; and a first through hole extending from the end surface toward the first end. The first through hole includes: a first opening that is located on the side of the first end; and a second opening located on the side of the second end. The first opening is positioned in the rear of the second opening in a rotational direction of the rotational axis.

The present disclosure is directed toward a tooling assembly for a machine having an automatic tool changing system. The tooling assembly includes a holder, a tool body, and an internal passage defined within and extending through the holder and the tool body. The holder includes a machine interface configured to engage with a spindle of the machine. The internal passage is operable to have a coolant fluid flow within, and has a stem channel and a curved channel extending from the stem channel.

A drill point for machining of light alloys, such as aluminium alloys, includes a body having a front end with an apex area, a central axis of rotation and at least one cutting structure. Each cutting structure has a primary rake surface, a primary clearance surface, a cutting edge at an intersection between the primary rake surface and the primary clearance surface, and a peripheral cutting corner. The cutting edge extends radially outward from the apex area to the cutting corner. The primary clearance surface, as seen in a front end view, has a breadth that is a distance extending perpendicular to and from the cutting edge to a primary clearance surface edge, which is rotationally trailing the cutting edge. The body further has a nominal cutting radius, which is a radial distance outward from the central axis of rotation to the cutting corner, and which is at least 1 mm.

In a rotating tool with a coolant hole, a coolant hole extending to a front side in the direction of an axis opening to a tip flank face of a drill main body that is rotated around the axis. In a cross section orthogonal to the axis, the coolant hole is provided with a first concavely curved portion located on an inner peripheral side of the drill main body and formed in a concavely curved shape recessed to the inner peripheral side, a second concavely curved portion located on an outer peripheral side of the drill main body and formed in a concavely curved shape recessed to the outer peripheral side with a larger curvature radius than the first concavely curved portion, two third concavely curved portions having a center of a curvature radius located inside the coolant hole with a smaller curvature radius than the second concavely curved portion.

There is provided a drill tool assembly for drilling metallic or other materials, comprising a holder having a mounting slot in which a cutting insert is positioned, and a through tool coolant supply system. The drilling tool system allows for the application of coolant to the rake surfaces of the cutting insert in a manner which facilitates enabling higher penetration rates while maintaining integrity of the cutting edges of the cutting insert. The drilling tool system comprises a holder having a rotational axis and mounting slot. A cutting insert with sides positioned adjacent the side surfaces of the mounting slot and cutting edges extending from the rotational axis is mounted in the slot. The insert includes rake surfaces adjacent the cutting edges that are positioned above the mounting slot. At least one coolant channel is disposed with at least one coolant outlet directed at the sides of the insert at a position below the rake surfaces. The coolant outlet is configured to disperse coolant in a curtain across the entire rake face of each cutting edge.

A drill body is provided which includes a flow hole capable of appropriately supplying a cutting region with a cutting fluid while securing stiffness of a leading end part. The drill body includes: a body part which extends in a rod shape from a base end part toward a leading end part; a discharge groove which is provided around a central axis of the body part in order to discharge chips; a fluid hole which is provided such that at least a part thereof passes through an inside, of the body part, of an inter-groove solid part of the discharge groove and which causes a fluid to flow from a side of the base end part toward a side of the leading end part; and a mounting part which is provided in the leading end part and which is for mounting a removable cutting edge member, wherein the mounting part has a recessed part which is provided along the central axis of the body part from an end surface of the leading end part, and a hole cross section of the fluid hole changes from a circular shape to a non-circular shape which is longer in a circumferential direction than in a radial direction in an axial cross section of the body part midway along a path of the fluid hole from the base end part toward the leading end part and assumes a non-circular shape in a portion which passes a side part of the recessed part.

A drill body is provided which enables a cutting edge member to be readily correctly mounted to a leading end part of the drill body and which can suitably supply a cutting region with a cutting fluid. The drill body includes: a body part which extends in a rod shape from a base end part toward a leading end part; a fluid hole for causing a fluid to flow inside the body part from a side of the base end part toward a side of the leading end part; and a mounting part which is provided in the leading end part and which is for mounting a removable cutting edge member, wherein the mounting part has a recessed part which is provided along a central axis of the body part from an end surface of the leading end part, and the fluid hole is provided by being bent in a side part of the recessed part so that a discharge port of the fluid hole in the leading end part opposes a cutting edge of the cutting edge member when the cutting edge member is mounted to the mounting part as prescribed.

A spray nozzle assembly for a machining apparatus includes an outer ring extending from a first axial inlet end to a first axial outlet end. The outer ring contains a flow distribution section that extends inwardly from the ends of the first axial inlet towards the first axial outlet and terminating therebetween. The outer ring includes a diffuser section extending inwardly from the first axial outlet end towards and ends at the flow distribution section. The outer ring has a first interior area defined by a first interior surface which contains a diffuser surface aligned with the diffuser section and multiple flow passages formed within and aligned with the flow distribution section and overlaps into the diffuser surface, and at least one guide surface and an abutment surface; and an inner member extending into the first interior area.

A cutting tool that includes an elongated body with a first end and an opposing second end. A cutting edge is positioned at the first end. A heat pipe extends within an interior space of the body and has a first end in proximity to the cutting edge and a second end in proximity to the second end of the body. The interior space is enclosed within the body and comprises walls that extend around an interior space. The walls comprise a geometric configuration for a liquid within the heat pipe to move towards the first end of the heat pipe during rotation of the body.

The present disclosure is directed toward a tooling assembly for a machine having an automatic tool changing system. The tooling assembly includes a holder, a tool body, and an internal passage defined within and extending through the holder and the tool body. The holder includes a machine interface configured to engage with a spindle of the machine. The internal passage is operable to have a coolant fluid flow within, and has a stem channel and a curved channel extending from the stem channel.