Abstract: The invention concerns a tool head for employment in machine tools with multiple indexable cutting inserts (20, 20?, 20?). The tool head includes a base body (12), a tool shank (14) projecting axially beyond the base body (12) and at least two blade receptacles (18, 18?, 18?) which are spaced apart at least in the circumferential direction for receiving respectively one indexable cutting insert. The active main cutting edge of the different indexable cutting inserts therein have a differing adjustment angle (?, ??, ??) relative to the axis of the base body. In order to reduce the blade costs, the same type of indexable cutting insert (20, 20?, 20?) is provided in the different blade receptacles.

Abstract: The invention concerns a tool head for employment in machine tools with multiple indexable cutting inserts (20, 20′, 20″). The tool head includes a base body (12), a tool shank (14) projecting axially beyond the base body (12) and at least two blade receptacles (18, 18′, 18″) which are spaced apart at least in the circumferential direction for receiving respectively one indexable cutting insert. The active main cutting edge of the different indexable cutting inserts therein have a differing adjustment angle (&agr;, &agr;′, &agr;″) relative to the axis of the base body. In order to reduce the blade costs, the same type of indexable cutting insert (20, 20′, 20″) is provided in the different blade receptacles.

Abstract: A tool holder includes a base member (10), a shaft (12) arranged on the rearward end of the base member (10) for connection to a machine spindle and a front facing recess in the front end of the base member arranged coaxially with respect to the shaft axis for receiving therein a coaxially aligned tool (24) which can be clamped in place by means of a clamping member (22). A regulating member (28) is furthermore axially guided in the base member (10), which regulating member serves as a positioning stop for the tool (24). In order to make possible a simple adjustment of the regulating member from a location externally of the tool holder, the regulating member (28) is constructed so that it has an axially extending rack thereon, while a gear (32) mating with the tooth system (30) of the rack and a clamping screw (42) engaging a keyway (38) of the regulating member (28) with its cone tip (44) are supported in the base member (10 ).

Abstract: In a drilling tool for drilling in solid metal material, in particular for drilling in plate stacks (plate drill), two geometrically similar reversible carbide tips (2, 3) are arranged at different radial distances at the end of the shank (1) and offset from each other by 180.degree. in the circumferential direction, whose working ranges overlap, and each of which comprises several cutting edges (2a, 2b, 3a, 3b) of equal length. Of the cutting edges (2a, 2b, 3a, 3b), respectively two adjacent cutting edges at an obtuse angle (.alpha.) to each other are simultaneously in contact, wherein the radially inner, first reversible carbide tip (2) extends by its cutting edge (2b) which is in contact slightly beyond the drill axis (A), and the radially outer, second reversible carbide tip (3) is axially set back from the first reversible carbide tip (2), and its two operative cutting edges (3a, 3b) form acute angles (.beta.1, .beta.2) of different size with the drill axis (A).