The present invention relates to a multi-material rotary cutting tool (1) and a method for manufacturing such a tool that includes at least one continuous or substantially continuous cutting edge (8, 9) made of at least two different successive materials. The extremity or top (10) of the tool is a point off-centered in relation to the axis of rotation (5) of the tool.

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.

Tools and methods for forming modified mechanical roughening profiles are disclosed. In at least one embodiment, an engine block is provided including a body defining a cylinder bore having a bore surface. The bore surface may have defined therein a plurality of grooves extending from the bore surface and each groove may have a base and a top portion. The top portion may have opposing chamfered edges. The chamfered edges may be formed by a tool including at least one cutting element having triangular teeth and at least one cutting element having rectangular teeth. In another embodiment, a tool including at least one cutting element having curved teeth and at least one cutting element having rectangular teeth may be used to form grooves having a curved/radiused edge surface. The disclosed roughening profiles may reduce oxide growth when a coating is applied to the bore surface.

In an embodiment, a cutting tool includes a holder and a cutting insert. The holder is elongated, extends from a first end to a second end along a rotational axis. The holder includes an insert pocket on a side of the first end. The cutting insert is located in the insert pocket and includes a cutting edge. The insert pocket includes an opening in an end surface of the first end and an outer peripheral surface adjacent to the first end of the holder. The cutting insert further includes a first portion that is located more radially inward than an outer peripheral opening of in the insert pocket in a front view of the first end of the holder. The first portion has a width greater than a width of the opening in a direction along a rotation direction of the rotation axis.

According to one aspect of this disclosure, a grooving tool is provided. The grooving tool has a body with a plurality of recesses. Plural inserts assembled into each of the recesses. The recesses include a cutting edge for forming grooves in an engine cylinder wall when rotated in one rotational direction. The insert also includes a peening surface extending in the opposite rotational direction from the cutting edge for deforming the upper edges of the grooves when rotated in an opposite rotational direction.

The present invention is an end-mill (A) comprising a shank (B) and a cutting portion (C) along its longitudinal axis (4), and formed by combining ceramic and metal based materials via brazing method, comprising: a cutting diameter (1) varying between 2 to 20 mm, at least one web thickness (18) 0 found at a blade (26) part, at least one helix angle (10) having a cutting edge (13) thereon, a core diameter (16) that is at least 0.7 times the cutting diameter (1), at least one corner radius (5) found at the tip part of the blades (26) between the flutes (9) and axial and radial rake angles (17) at which cutting operation is made. TiAlN coating is applied over ceramic-metal based 5 end-mill (A) by PVD method in order to extend the service life of the end-mill, increase abrasion resistance, and minimize the welding (sticking) problem of chips on the cutting tools.

A tool blank (30) for a cutting tool (1), such as an end mill, drill or engraving tool, includes a tool shank (2) configured to be received in a rotating tool holder of a processing machine, and a cutting head blank (3) fixedly connected to the tool shank (2). The cutting head blank (3) includes multiple cutting head blank elements (5) fixedly connected to each other, preferably soldered to each other, and made of a high hardness material such as polycrystalline diamond. A cutting tool (1), such as an end mill, drill or engraving tool, has at least one tool cutting edge (15) that is defined on such a tool blank (30) and extends over multiple cutting head blank elements (5) that are fixedly connected to one another.

The present invention relates to a rotary cutting instrument, in particular of the bur type, intended for chirurgical or dental use and comprising an active cutting part and a handle. Said active part is made of a metal carbide and the handle is made of a nickel-titanium alloy. The instrument further comprises an intermediate part made of stainless steel placed between the active part and the handle and metallurgically connected to said active part and to said handle.

The invention relates to a rotating tool including a support shaft extending in the axial direction along a rotational axis and a tool head connected thereto having a base body extending along the rotational axis and a core, to which a jacket made of a cutting material is placed, wherein the core has a circular cross-section (Q) in the radial direction and a jacket has a specified wall thickness and wherein a number of grooves is made in the jacket in order to form a number of cutting edges.

A cutting tool including an annular cutter body having at least one V-shaped pocket formed therein and a cutting tool cartridge configured to be received in the at least one pocket of the cutter body. The cutting tool cartridge including a main body. The main body includes a cutting head having a cutting chip control portion and a pocket configured to receive a cutting insert.