A milling tool body is rotatable around a central rotation axis and includes a front end surface and a rear end surface. An envelope surface surrounds the axis and extends between the rear end surface and the front end surface. A plurality of insert pockets are formed in a transition between the envelope surface and the front end surface. A first central through-hole of constant diameter extends between the rear end surface and the front surface. The locking disc has a second central through-hole and a fastening device is arranged to extend through the second central through-hole. The locking disc is arranged to press against the front end surface of the milling tool body when mounting the milling tool body to an adaptor by the fastening device. The fastening device is mountable to an end of the adaptor insertable into the first central through-hole.

One aspect of the invention provides a cutting tool used for peripheral cutting operations, comprising: a plurality of peripheral cutting edges, and a plurality of flutes disposed between the peripheral cutting edges, wherein each of the flutes includes at least one surface, and at least one depression recessed into the at least one flute surface, wherein each of the depressions defines a depression interior configured to trap cooling liquid during operation of the cutting tool, and wherein at least one of the depressions is dimensioned and disposed to enhance heat dissipation at least one of the peripheral cutting edges.

An end mill body comprises: bottom blades formed at ridgelines where gashes and tip flank faces intersect, the gashes are formed at the tips of chip discharge grooves. At least one of the bottom blades serves as a long bottom blade that extends toward an inner peripheral side longer than the remaining bottom blades. The end mill body also has coolant holes formed between the chip discharge grooves. A coolant hole which is located between a chip discharge groove of a gash and a chip discharge groove located behind the chip discharge groove in a rotational direction is open to the tip clearance face of the long bottom blade. A coolant hole which is located between the chip discharge groove of the gash and a chip discharge groove located in front of the chip discharge groove in the rotational direction is open to the gash of the long bottom blade.

A rotary cutting tool includes a cutter body and a coolant cap removably secured to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The cylindrical outer surface has a second cylindrical outer surface portion with external threads formed thereon such that the coolant cap is capable of being threaded onto the cutter body.

A prismatic and cylindrical cutting insert for long edge rotary milling applications has multiple indexable cutting edges ranging from four to six or even more depending on the actual milling applications. Each cutting edge of a prismatic or cylindrical cutting insert provides a positive cutting geometry and is equivalent to an indexable cutting edge of a traditional single-sided parallelogram-shaped cutting insert having two indexable cutting edges (often referred as A-Style insert). The prismatic and cylindrical (including tapered or conical) cutting insert may be used for machining a wide range of materials including difficult-to-machine materials, cast-iron and alloys, aluminum and alloys, carbon steels, and fiber reinforced composites.

An apparatus for cutting annular corrugations in an interior surface of a cylindrical tube having a cutter head comprising a plurality of cutting teeth; a drive shaft coupled to the cutter head for spinning the cutter head; a mandrel coupled to the cutter head, wherein the mandrel defines a longitudinal axis, wherein an axis of rotation of the cutter head is parallel to, but in a position not coaxial with the axis of rotation of the cutter head; an outer eccentric coupled to mandrel, wherein the outer eccentric rotates the mandrel, wherein the axis of rotation orbits around the longitudinal axis.

A replaceable face-milling head configured for rotating about a central rotation axis A.sub.R. The head includes a cutting portion and an integrally formed threaded shank-connector portion, the latter of which being configured for connecting to a shank. A length-diameter ratio LDR, defined as a cutting portion length L.sub.C divided by a cutting portion diameter D.sub.E, fulfills the condition: LDR≦1.00.

To provide an automatic chuck greasing device in a crankshaft miller capable of ensuring chuck greasing without missing its timing and preventing failure to remove excess grease by wiping. In a crankshaft miller (1) which cuts, using a rotary cutter (7), a workpiece (2) held by a chuck (3), the automatic greasing device includes: a grease supply device (25) for supplying grease to sliding parts inside a chuck (3) including one between a chuck body (3a) and a chuck jaw (3b) in response to a greasing command signal outputted by a greasing command signal output unit (35) which has received a rotary cutter replacement command signal as a trigger signal from a rotary cutter replacement command signal output unit (33); and a notification means (30a, 30b) for notifying that a cutter (7) needs replacement in response to a notification command signal outputted by a notification command signal output unit (36) which has received the rotary cutter replacement command signal as the trigger signal from a rotary cutter replacement command signal output unit (33).

Milling tools and methods are disclosed. The method may include moving a milling tool having at least two axially spaced apart sets of cutting inserts to an axial position within a bore in a material and rotating the milling tool about a longitudinal axis. Contact between the milling tool and a wall of the bore may be initiated in a region of the wall having a least amount of material at the axial position. The milling tool may include a tool shaft having a longitudinal axis, a first set of radially spaced cutting inserts coupled to the tool shaft, and a directly adjacent second set of radially spaced cutting inserts coupled to the tool shaft and spaced from the first set of cutting inserts along the longitudinal axis. The first and second sets of cutting inserts may be staggered from each other by at least 10 degrees.

On the perimeter of a head (14) that is bonded on one end of the shank (12) of a T-shaped cutter, multiple end cutting edge sections (16) with a cutting edge (16a) on the tip side of the T-shaped cutter (10) and multiple upper edge sections (18) with a cutting edge (18a) on the base end side are disposed alternating in the circumferential direction of the T-shaped cutter. The cutting edges (16a, 18a) of the end cutting edge sections (16) and the upper edge sections (18) form an integral structure with the shank (12) and the head (14).