Abstract: A cutting body is formed of compacted powder and has a lower side provided with a recess and a spaced protrusion. The body can be used as a cutting insert, or two identical such bodies can be sintered together to form an invertible cutting insert. Voids can be formed within the insert to contain sensors or conduct cooling fluid.

Abstract: A screw includes a socket adapted to receive the tip of a screwdriver. The socket is tapered and formed by a plurality of sides interconnected by rounded corners. Each side is configured as a surface of a segment of a cone having a cone angle of at least three degrees. The screwdriver tip is configured correspondingly to the screw socket. The screwdriver may be mounted in a power driven rotary arm and spring-biased, whereby a tightened screw applies a rearward reaction force to the screwdriver, causing the tip to be displaced from the screw socket and thereby limit the torque applied to the screw.

Abstract: A double-sided insert includes upper and lower rake faces. The rake faces include chip faces lying on the uppermost and lowermost planes of the insert to respectively define a chip deforming face and a holder-engaging supporting face. Those rake faces are so located that the rake face(s) serving as a support face(s) is disposed closely adjacent the cutting edge to minimize stresses imposed on the insert during a cutting operation.

Abstract: An insert for chip forming machining includes a polygonal body provided with a cutting edge and a chip former. The chip former comprises a plurality of ridges whereby the distance between adjacent ridges diminishes in a direction towards the middle of the cutting edge, whereby the insert cuts a conical corrugated chip which is forced away from the workpiece during machining.

Abstract: The invention relates to a turning insert. The insert (10) consists of longitudinally extending surfaces (13,14), end surfaces (15, 16), side surfaces (11), a shoulder (17) and a portion (18) provided with a cutting edge (19). The cutting edge (19) is circular and has a diameter which exceeds the thickness of the insert which makes a plurality of turning operations possible, including grooving into unlimited depth. The portion (18) is provided with rake face (25) sloping downwardly and inwardly from the cutting edge, which face is provided with a plurality of concave recesses (23) intersecting each other.

Abstract: The invention relates to a tool for chip removal comprising a cutting insert mechanically clampable within a slot of a holder. The insert is clamped by the resilient force arising during deflection of a clamping arm provided in the holder. The insert and the clamping arm are engageable at contact regions separated from each other, a first contact region of which forms an acute angle relative to the lower side of the insert.

Abstract: A cutting tool for chipforming machining of work pieces is of the type comprising a rake face and a clearance face. A cutting edge is formed at the intersection of the rake and clearance faces. The cutting edge is intersected by a depression extending along the rake face. The depression intersects a projection formed at the clearance face.

Abstract: The invention relates to an insert, preferably for turning. The insert, which has a triangular basic shape, has three chip breakers in its upper flat face. A cutting edge is formed at the intersection line between a chip breaker and an edge surface. The chip breaker is formed with a conical rake face inside an associated nose portion. The chip breaker consists of an outer part and an inner part. The inner part is mainly planar and its termination at the nose portion deviates from the general direction of the inner part in order to guide and control chips during finishing.

Abstract: An indexable cutting insert for a variety of turning operations, which mainly has a rhombical or triangular basic form. The cutting corners of the cutting insert are provided with nose portions. Each nose portion is expanded in the width direction at an acute-angled corner mainly symmetrically about the bisector of the cutting corner. Thus the cutting insert achieves a locally large setting angle or clearance angle.