A turning insert arranged for longitudinal turning of metal work pieces includes a nose cutting edge that slopes from a trailing cutting edge in direction towards a leading cutting edge. A turning tool is also disclosed.

This invention relates to finish machining, including a tool and the method of its use. Embodiments of this invention allow a cutting insert to be indexed quickly without loosening the insert retainer (screw or clamp) and not changing the depth-of-cut position of the tooth tip. The indexing motion is achieved by rotating a rotor, either manually or by way of a motor included on the tool. In some cases, between indexes, a small angle may be imparted to the rotor in order to adjust slightly the depth-of-cut position of the tooth tip in order to compensate for it being worn, or in other cases to precisely match the depth of cut of the tooth tips on multiple cutting teeth. The method involves setting up the path the tool will follow, then setting the feed per finishing tooth to be unconventionally large relative to the maximum depth of cut along the path. Using a round cutting insert, in particular a tangentially-mounted one or one that exhibits comparable curved edge profile, provides a large tooth-tip radius of curvature which in turn results in a good/smooth surface finish in spite of the unconventionally high feed per finishing tooth.

A turning insert arranged for longitudinal turning of metal work pieces includes a nose cutting edge that slopes from a trailing cutting edge in direction towards a leading cutting edge. A turning tool is also disclosed.

Tool for machining a workpiece, comprising: a cutting insert; and a cutting insert holder comprising a first cutting insert receptacle extending along a first center axis and a second cutting insert receptacle extending along a second center axis, into which the cutting insert is selectively receivable; wherein the first and second center axes intersect at an imaginary crossing point located in a region that is covered by the cutting insert when the cutting insert is received in the first cutting insert receptacle as well as when the cutting insert is received in the second cutting insert receptacle.

A modular boring head includes a tubular main body having a slot, a movable rod engaging the tubular main body, a leadscrew disposed within the tubular main body and a compact click mechanism mounted to the leadscrew. The click mechanism includes a spur gear and an elastic latch element that acts as a bidirectional ratchet disposed radially outward with respect to the spur gear. During operation, rotation of the leadscrew causes the elastic latch element to move in an axial direction, D, within the slot and also causes the bidirectional ratchet or elastic latch element to cooperatively engage the spur gear in such a manner so as to produce an audible and tactile click, each click being indicative of a distance that the movable rod is displaced in the axial direction, D, with respect to the tubular main body.