A cutting tool 1 has cutting edges 2 formed by a plurality of side surfaces on both sides 21, 22 raised at a side portion along a longitudinal direction, and the cutting tool 1 in which a coolant passage pipe 30 is extended around a rotation center axis 5, and coolant passage pipes 31 branched from the extended coolant passage pipe 30 are projected along a direction of a raised side surface 21 on a rotating direction side of the raised side surfaces on both sides 21, 22.

This disclosure relates to a machining tool having a base body which is rotatable about a rotary axis and movable in a feed direction along the rotary axis, at least one cutting element which is fixed on the base body and has a front cutting edge pointing in the feed direction, and a flute associated with the cutting element and formed by a recess in the base body. In order to control the chip flow, according to this disclosure, a flute cover mounted on the base body is proposed, which outwardly covers a chip removal area of the flute adjoining the cutting element.

A cutting tool has a rake face and a flank face. The flank face is provided with a coolant supply hole. A ridgeline between the rake face and the flank face forms a cutting edge. An outer shape of the coolant supply hole in a cross section orthogonal to an axis includes a first portion facing the cutting edge, and a second portion opposite to the cutting edge when viewed from the first portion. The first portion has a concave portion extending toward the second portion. The concave portion is defined by a first side portion and a second side portion facing each other, and a bottom continuous with both the first side portion and the second side portion. In the cross section, an angle formed by a tangent of the first side portion and a tangent of the second side portion is not more than 160.

The invention relates to a single-lip deep hole drill comprising a drill head, wherein the drill head has a drill diameter, a blade and a channel for chip removal, wherein the blade extends outwards from a rotational axis up to the perimeter of the drill head, wherein the blade has a cutting surface and wherein the channel is bordered by a chip forming surface, wherein the chip forming surface has two sections such that a first section of the chip forming surface extends in the radial direction from the rotational axis up to a first diameter, a second section of the chip forming surface connects to the first section in the radial direction, the first section is positioned above the cutting surface, and the second section is positioned nearer to the cutting surface than the first section.

A rotary tool comprises a cylindrical sleeve including an opening formed in an outer circumferential surface thereof providing fluid communication between a hollow interior of the sleeve and an environment surrounding the sleeve. The sleeve includes an axially extending flow passage formed therein terminating in a first fluid outlet formed in an open end of the sleeve disposed adjacent a cutting element of the rotary tool. The fluid outlet is configured to deliver a flow of a fluid toward the workpiece to cause chips formed during the machining operation to be directed away from the workpiece and out of the hollow interior of the sleeve through the opening formed in the outer circumferential surface thereof.

A core drill includes a housing, a first handle extending from the housing and defining a gap between the handle and the housing, a motor supported within the housing, and a battery removably coupled to the housing and configured to provide power to the motor. The battery has an output voltage greater than 40 volts. The core drill further includes a spindle configured to rotate about a rotational axis in response to torque received from the motor and a fluid delivery system configured to supply fluid to the spindle. The fluid delivery system includes a valve operable to regulate a flow of fluid to the spindle and an auxiliary handle removably coupleable to the housing at each of a first mounting point and a second mounting point.

A rotating cutting tool that is internally cooled by cryogenic coolant, the rotating cutting tool has a cylindrical body including: a central bore that extends along a longitudinal axis of the cylindrical body; a plurality of cold flow delivery paths formed from radial bores that fluidly communicate with and extend radially-outwardly from the central bore; longitudinal grooves that are formed along an outer surface of the cylindrical body extending along the longitudinal axis and fluidly communicating with the radial bores; a bushing having an inner diameter closely conforming to the outer surface of the cylindrical body allowing the bushing to concentrically fit over the cylindrical body and the longitudinal grooves to form longitudinal passageways extending from the radial bores to one or more exhaust ports formed in the bushing proximate a rear face of the cylindrical body; and a plurality of flutes for cutting a workpiece each having a cutting edge formed from the bushing.

A rotating cutting tool that is internally cooled by cryogenic fluid has a generally cylindrical outer shape. At least one flute is formed on the cutting tool and a cutting edge is formed on an outer edge of the flute for cutting a workpiece. An internal cold flow delivery path for cryogenic coolant is in proximity to the cutting edge. A coolant cavity is formed in the cutting tool for supplying cryogenic coolant to the internal cold flow delivery path and a return path for cryogenic coolant is downstream from the cold flow delivery path. An exhaust port is coupled to the return path for exhausting cryogenic coolant to atmosphere. The exhaust port is remote from the cutting edge so that the cryogenic coolant is exhausted away from the cutting edge and away from a workpiece so that the cryogenic coolant does not cool and toughen the workpiece.

A power tool includes a housing with a motor housing portion and a drive housing portion, a handle extending from the housing and defining a gap between the handle and the housing, a motor located within the motor housing portion having a motor output shaft, a fan coupled to the motor output shaft, a battery to provide power to the motor, a trigger coupled to the handle and manipulable to energize the motor, a spindle extending within the drive housing portion and driven by the motor output shaft to rotate about an axis, and a fluid delivery system configured to supply a fluid to the spindle. The housing includes an air intake opening and a deflector to inhibit the fluid from entering the housing through the air intake opening, and rotation of the fan draws an airflow into the housing through the air intake opening.

A drive shaft for a machine tool is connectable to a drilling tool. The drive shaft contains a cavity extending substantially over the entire length of the drive shaft and along the axis of rotation where the cavity contains an inflow opening through which water can be fed along the drive shaft into the drilling tool. An insert device is provided in the cavity, through which, to cool the drive shaft, the water is guided first in a first direction and then in a second direction where the insert device contains a first curved guide element and a second curved guide element for separating the water which is guided in the first direction from the water which is guided in the second direction. The cross-sectional area of the first curved guide element is designed point-symmetrically about a center longitudinal axis to the cross-sectional area of the second curved guide element.