Abstract

A combination tool for performing a cutting operation and a countersinking operation. The combination tool includes a cutting tool including a shank, a cutting portion comprising a forward end and at least one cutting edge, the cutting portion configured to perform the cutting operation in use, and at least one coolant channel extending between a rear end of the shank and the forward end of the cutting portion, such that a cooling fluid can flow through substantially a whole length of the cutting tool. The combination tool further includes a collar located around the cutting tool and fixed thereto, the collar comprising at least one countersink cutting edge and is configured, when the combination tool is in use, to perform the countersinking operation.

IPC Classes  ?

• B23B 51/10 - Bits for countersinking

Abstract

a). A method of forming such a rotary cutting tool is also provided.

IPC Classes  ?

• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23C 5/18 - Milling-cutters characterised by physical features other than shape with permanently-fixed cutter-bits or teeth

Abstract

d) disposed at an acute angle relative to the longitudinal axis.

IPC Classes  ?

• B23D 77/02 - Reamers with inserted cutting edges
• B23B 51/08 - Drills combined with tool parts or tools for performing additional working

Abstract

A rotary cutting tool (10) comprises a shank (12) formed of a first material of a first hardness. The shank (12) has a first end (12a), and a plurality of elements (14) are provided at the first end (12a) of the shank (12). The elements (14) are formed of a second material of a second hardness greater than that of the first hardness. The elements (14) provide a platform to be able to create a plurality of cutting edges or teeth (18, 20a). A method of forming such a rotary cutting tool is also provided.

IPC Classes  ?

• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft

Abstract

A drill reamer (20) comprises an elongate body (21) disposed about a longitudinal axis. The elongate body comprises flutes (22a-22d) having separate hard cutting sections (27a, 28'a, 28"a, 28'b, 28"b) and a soft cutting section (24a, 24b). The soft cutting section is formed of a materia! such as carbide having a hardness that is less than that of the hard cutting sections, which may be formed of pofycrystalline diamond. At least one first hard cutting section (27)a is axially displaced relative to at least one second hard cutting section (28'a, 28"a). The reamer has a tip cutting edge (23a, 23c) and tapered cutting edge portions (24a-24d) disposed at an acute angle relative to the longitudinal axis.

IPC Classes  ?

• B23B 51/08 - Drills combined with tool parts or tools for performing additional working
• B23D 77/02 - Reamers with inserted cutting edges