Abstract: The cutting plate in the form of a polyhedron comprises a front surface (1) and a rear surface (2) at an angle to it, cutting edges (3), strengthening facet (4), inclined to the plane of the cutting edges, and a swarf-breaking groove (5). The strengthening facet is in the form of three sectors, the angle of inclination of which to be the plane of the cutting edges is determined from specified expressions. The third sector of the strengthening facet is wider than the first two sectors.

Abstract: A production method of a thin plate includes preparing a thin plate support with a receptacle cavity having a bottom surface formed with a complementary three-dimensional pattern with a three-dimensional pattern of one side surface of a machining object, setting the machining object within the receptacle cavity with mating the complementary three-dimensional pattern with the three-dimensional pattern on the one surface of the machining object, chucking the thin plate support carrying the machining object set in the receptacle cavity on a machine tool, driving the thin plate support together with the machining object to rotate, and machining the machining object as being driven to rotate on the machine tool from the other side of the machining object by means of a cutting tool.

Abstract: A device aids the setter of a cutter head for cutting, e.g., milling or hobbing, of spiral bevel gears to align all rod-shaped blades with their tip cutting edges to an axial height which is as uniform as possible and to move them with their profile cutting edges to a correct radial position in the cutter head so that uniform chip removal can take place. The device has a stable arm which can be moved numerically controlled axially and radially to the cutter head, with positions which are continuously measured and with which each individual blade can be automatically pushed into its chamber in the cutter head. A probe which is connected to the arm measures the axial height of the tip cutting edge of each blade before, during and shortly after each blade is pushed in.

Abstract: A multi-height cutting apparatus includes a fixed cutting tool means disposed around a central axis, the fixed cutting tool means having at least one cutting edge, and a plurality of rotary cutting tool means spaced between the column and the fixed cutting tool means and respectively rotated to cut can bodies being delivered one after another through a circular path between the at least one cutting edge of the fixed cutting tool means and the rotary cutting tool means, the at least one cutting edge of the fixed cutting tool means each having a stepped cutting structure, the rotary cutting tool means each having a cutting edge in a stepped structure thereof corresponding to the at least one cutting edge of the fixed cutting tool means for cutting each delivered can body at different heights.

Abstract: A pipe beveling tool with improved operation and structure with reduced chatter due to its anti-backlash design. This tool allows for quick changing of cutter heads and tool bits. It also incorporates a quieter pneumatic motor muffler system and has a reduced overall length due to a double action feed system.

Abstract: A method for making a cutting insert for use in an ID rotary cutter includes obtaining the profile of a convex surface portion of a finished part to be milled with the cutter, translating the profile a minimum distance away from a reference axis for the convex surface portion, and generating a reference contour by rotating the translated profile about the reference axis. A reference profile for a cutting edge of the cutting insert is obtained as the intersection of the reference contour with a reference plane that is disposed at a predetermined helix angle relative to the reference axis.

Abstract: A triangular threading insert has a mount portion (60) with three sides forming locating faces (50, 52, 54) that lie on the three sides of an imaginary triangle (96) and has three cutting arms (21-23) with outer edges (80) for cutting threads. The outer edge of each arm projects sidewardly beyond the sides of the imaginary triangle, to leave locating faces of long length. The top face (110) of the mount portion forms a hexagon with the cutting arms projecting radially from three of the sides (71-73) of the hexagon, and with the other three sides of the hexagon extending parallel to the locating faces of the mount portion. Each locating face has a smaller height (H) than the thickness (T) of the insert, with concave border regions merging the top and bottom (124, 126) of each locating face to the top and bottom faces of the insert, and merging horizontally-spaced ends (134, 136) of each locating face to a cutting arm.

Abstract: A protection device (D) for the driving mechanism of a mobile element (O) against the cuttings of a machine tool includes a driving section (P1) and a machining zone (P2) separated by a protection wall. The protection wall is constituted by a plate (100) having a free translational motion on a disk (200) rotating freely with respect to the wall. A first displacement window (210) in the disk (200), and a second displacement window (310) in the wall are provided wherein both displacement windows (210 and 310) are arranged with respect to each other in such a way that the translational displacement of the plate (100) and the rotation of the disk (200) occlude the opening of both displacement windows (210 and 310).

Abstract: The cutter holder (1) has, on the one hand, parallel fixed fingers (7) equipped with a groove (15) and, on the other hand, moving locking fingers (10) of which the end (16) is preferably conical. The milling cutter (6) has at least one flat annular part pierced, on the one hand, with fixing holes and, on the other hand, with locking holes which are slightly angularly offset with respect to the locking fingers in a direction which is the opposite to the direction of rotation of the cutter. Once the cutter has been fitted over the fixed fingers and engaged in the grooves (15), engaging the locking fingers in the locking holes has the effect of locking the cutter on the fixing fingers.

Abstract: The present invention provides a cutting tool assembly comprising a tool shank a pull rod and a cutting head. The tool shank has an axially extending elongated hole. A forward portion of the elongated hole being formed by first and second non-coaxial, partially overlapping, axially extending cylindrical bores. The pull rod has forward coupling portion that cooperates with a rear-coupling portion of the cutting head, forming a joint coupling region. The pull rod and the rear-coupling portion of the cutting head are retained in the elongated hole in the tool shank with the joint coupling region situated in the forward portion of the elongated.

Abstract: A lifter bore groover tool having a housing in an essentially rectilinear configuration which has an upper wall and a lower wall and a plurality of side walls. The side walls include a cutting wall and another wall and facing walls there between. A bore is formed in the housing adjacent to the cutting wall. A long cylindrical chamber beneath the bore is in communication with a guide slot extending through the cutting wall. A cylindrical cutting block is axially reciprocable within the long cylindrical chamber. A cutting tool is removably supported in the cutting block extending laterally through the guide slot for contacting the surface of the bore to be grooved. The cutting block and cutting tool are axially adjustable. A bolt is received within the bore. The bolt has an upper end with a head for rotation by the user.