Abstract: A design tool for predictively indicating, in metal slitting, expected edge conditions of slit metal. Also contemplated is a corresponding method. Further contemplated is a design tool and method for providing, in metal slitting, a predictive assessment of at least one condition relating to at least one of: knife edge and slit metal edge.

Abstract: In an interference fit type cutting tool according to the present invention, a projection and a fitting projection are formed at the rear end of an edge section and at the leading end of a shank section, respectively. A connecting member is provided with first and second holes that have a predetermined interference with respect to the outer diameters of the projection and the fitting projection. The edge section and the shank section are fixed by interference fitting between the first hole and the projection, and between the second hole and the fitting projection. Chatter vibration is reduced by making the edge section and the shank section of a high-rigidity material having a lower coefficient of thermal expansion than that of the connecting member.

Abstract: A cutting tool is provided, at least in certain areas, with a carbonitride coating, which acts to reduce friction and as a wear-protective layer. The coating is applied by means of a modified PVD process in that, for creating the carbonitride layer, carbon and nitrogen in the form of gas are introduced into the reaction chamber, and one or several ion sources are continued to be operated to form plasma.

Abstract: A bone milling tool for precise preparation of bones includes a milling head connected to a driveshaft. The driveshaft simultaneously serves as a guide element which is guided in a bone. The bone milling tool further includes a toothing which is arranged on the milling head facing the driveshaft.

Abstract: A high-speed carbide rotary cutting tool designed for use in the carving, cutting and shaping of most materials including, but not limited to, wood, ferrous and non-ferrous metals, bone, stone, plastics and composites. It is designed for use in high-speed, hand-held rotary grinders, such as flex shaft hand pieces, die grinders, and other high-speed stationary grinding tools, primarily using 1/4 inch and 1/8 inch shaft sizes. The tool includes a triangular solid carbide cutting head shaped for cutting different profiles. The cutting head is brazed to a mandrel in such a manner as to render the tool one piece.

Abstract: A drilling/cutting bit for forming joints in wooden members to be connected together by a coupling. The bit simultaneously forms a smaller width slot, a larger width slot, and a curved transition between the slots.

Abstract: A drill/cutting tool for making joints in wooden members for receiving a metal plate connector. The drill/cutting tool can bore a hole, and then simultaneously cut a smaller width groove and larger width groove from the hole to complete forming the joint. Also, a method of making a joint in wood members.

Abstract: A tool bit includes a shaft portion having an adaptor end and a working end and a middle segment connecting the adaptor end and the working end, the middle segment having an average radius and a longitudinal axis, an adaptor base having an axial bore for receiving the adaptor end and having a fastening structure for removably securing the adaptor end within the axial bore, where the adaptor base has an average radius which is at least two times the average radius of the shaft portion middle segment, for enhanced tool bit stability, and where the adaptor base includes a lateral chuck engaging surface adapted to abut during rotational loading of the tool bit a corresponding lateral adaptor base engaging surface within a power tool chuck, and to abut the adaptor base engaging surface at a distance from the shaft portion longitudinal axis of at least two times the average radius of the middle segment so that the chuck engaging surface lockingly abuts the adaptor base engaging surface with a substantial moment, to

Abstract: A cutter for use in an electrode tip dresser, which has a cutter holder for holding the cutter and dresses an electrode tip for a resistance welding apparatus, has a rising portion which has a cutting tooth for cutting a front peripheral portion of the electrode tip and a flat portion which faces a front end surface of the electrode tip. The flat portion has a single cutting tooth for cutting the front end surface of the electrode tip. The single cutting tooth extends from that central point of the cutter as and origin which coincides with an axis of rotation of the cutter holder towards a predetermined radial direction. An origin portion of the single cutting tooth further extends beyond the central point towards a direction which is opposite to the radial direction.

Abstract: A tool bit includes a shaft portion having a mounting end for insertion into a bit receiving opening of a chuck, having a working end, and having an average radius and a longitudinal axis, a flywheel portion, between the mounting end and the working end, having an average radius greater than the average radius of the shaft portion and greater than the average radius of the receiving opening of the chuck, and having a center of gravity, the flywheel portion being connected to the shaft portion such that the flywheel portion center of gravity is located substantially on the shaft portion longitudinal axis, the shaft portion, the mounting end and the flywheel portion being joined together as a single unified structure.

Abstract: A pair of replaceable, identical cutter inserts are provided for a cutter head assembly of a sign engraving machine. The cutter inserts have inside edges formed at an angle of approximately 15.degree. from a cutter tip axis. The inside edges of the cutter insert overlap to form an "X" when installed in the cutter head for sign engraving operations. Chips migrate up the inside edges from the cutter tips and are exhausted from the cutting area.

Abstract: An apparatus and method for cutting a hole in a liner installed in a conduit. Included in the apparatus is a carriage and a cutting head that are rotated to cut the liner. A lateral axis extends through the carriage. A skid constrains the carriage and the cutting head. The cutting head is substantially positioned over the center of gravity of the carriage to provide stability during cutting. The cutting head moves vertically with the use of a cam. The cutter also moves laterally and may rotate about the axis when cutting the hole. Prior to cutting the hole, the skid extends outward to hold the carriage in place. The apparatus also includes a specialized cutter having cutting bars along its outside perimeter and along its top surface.

Abstract: Molten metal created during cutting of a workpiece by a plasma-arc torch is discharged downwardly into a tubular collector duct. A power-rotated cutter is located adjacent the upper end of the duct and shaves dross from the underside of the workpiece as the latter is moved beneath the torch, the dross also being discharged downwardly into the duct. Water is sprayed into the duct to cool the duct and is also sprayed against the rotary cutter to cool the cutter as the dross is shaved from the workpiece.

Abstract: A rotary tool is provided with a shank and a collar-like section, and further includes a plurality of screw-threaded holes drilled in a vertical end face of the collar-like section, in parallel relationships with the axis of the collar-like section. A plurality of balancing weights are removably screwed in the holes as required to balance the tool.

Abstract: The cutting head for a surgical reamer has a leading end for insertion into a bone canal and a trailing end for attachment to a drive shaft. The cutting head has a cutting surface formed about an axis of rotation of the cutting head. The cutting surface is formed by the rotation of the cutting edges on a plurality of flutes spaced around the axis of rotation. Each cutting edge has a first portion spaced a predetermined radial distance from the axis of rotation at the tip portion and terminates at a terminating point which is at a greater radial distance from the axis of rotation than the starting point. The cutting edge on each flute has a second portion having a starting point at the trailing end of the cutting head which is at a second predetermined radial distance from the axis of rotation. The second portion extends axially towards the tip portion and terminates at a point at a greater radial distance from the axis of rotation than the starting point thereof.

Abstract: A shaper cutter includes an elongated body having a flat forward end surface perpendicular to the axis of the body and having teeth formed around its periphery, and further includes a thin insert being mechanically secured to the end surface of the body and having peripheral cutting teeth which lie against the teeth of the body, the teeth of the insert serving to cut a work piece and being backed by the teeth of the body. The insert is in the form of a Belleville spring which, in its unstressed state, has a conical shape. The mechanical means used to secure the insert to the body deflects the insert into a flat configuration whereby its bottom side is forced into intimate face to face contact with the flat forward end surface of the body, and the teeth of the insert are thus positively biased by inherent spring force against the flat end surface of the supporting teeth, and are operable to cut a work piece as the tool is advanced forwardly.

Abstract: A balanceable tool holder for machine tools includes a main body with a holding cylinder. In addition, a flange encircles the main body. A plurality of screw holes extend longitudinally in the main body in which adjusting screws are moveable inwardly and outwardly for adjusting the balance of the tool holder.

Abstract: A insert rotary cutter has a cutter body, at least one first cutter insert and at least one second cutter insert for cutting off burrs. The first cutter insert has more than one main cutting edge and end cutting edge. The second cutter insert has more than one main cutting edge and end cutting edge. The first and second cutter inserts are mounted on a forward end of the cutter body releasably. The second cutter insert is disposed so that the main cutting edge thereof has a negative corner angle and the end cutting edge thereof is displaced radially inwardly and axially forwardly of the cutter body, with respect to the end cutting edge of the first cutter insert.

Abstract: An internal disk milling cutter has a pair of cutting edges swept back symmetrically from a forwardmost cutting corner, and a concave upper surface behind the cutting edges, so that the insert may be oriented on the cutter body in such a way as to provide a low force, skiving action.

Abstract: A rotary tool is provided with a shank and a collar-like section, and further includes a plurality of screw-threaded holes drilled in a vertical end face of the collar-like section, in parallel relationships with the axis of the collar-like section. A plurality of balancing weights are removably screwed in the holes as required to balance the tool.

Abstract: The face milling cutter of this invention has indexable inserts with double-positive rake. Square inserts for a substantially 0.degree. lead angle are insertable in the body interchangeably with different octagonal inserts that respectively provide for 15.degree., 30.degree. and 45.degree. lead every insert engages a radially outwardly facing relief surface on angles. One relief surface on the body that extends parallel to the cutter axis, and another engages an axially forwardly facing surface on a rear body member. The large area leading surface on each insert flatwise engages a circumferentially facing surface on the body that establishes the rake angles. Every insert has an operative cutting edge that is spaced radially outwardly from the body and has another and longer edge that is spaced axially fowardly from the front surface of the body and serves as a wiper land.

Abstract: A cutting tool for machining printed circuit boards and the like includes a cutting part having an longitudinal axis of rotation, an outer surface, and a plurality of staggered teeth formed on the outer surface. The cutting part has a first predetermined number of main cutting grooves formed in the outer surface and which extend along the cutting part at a first lead angle, as well as a second predetermined number of divider grooves intersecting the main cutting grooves. The divider grooves extend along the cutting part at a second lead angle. The main cutting grooves and the divider grooves define teeth. The first predetermined number is a prime number and the second predetermined number is greater than the first predetermined number by two, such that the teeth are staggered as viewed in a radial direction which is perpendicular to the longitudinal axis and such that each of the teeth partially overlaps in the radial direction at least another one of the teeth.

Abstract: The inner peripheral portion of the blade material is made thinner than the outer peripheral portion thereof. This serves to make greater, as compared with conventional cutter bodies, the distance between the adjacent portions of the cutter body where the respective inner peripheral portions of the blade material are adapted to rest, thus enabling the rigidity of the cutting tool itself to be improved. On top of this, the rake face of the blade material can be reground, when necessary, until the material is completely used up and worn away, thus making it possible to make full and efficient use of the blade material without any waste.

Abstract: A chamfering machine comprising a planar guide base, a rotary shaft extending at right angles to the guide base, upward and downward cutting edges attached to the rotary shaft and used to chamfer respective bottom and top edges of a workpiece, a first rotation guide located above the upward cutting edge so as to be in contact with a lateral face of the workpiece, a second rotation guide located below the downward cutting edge so as to be in contact with the lateral face of the workpiece, and an adjusting mechanism for retaining the cutting edges and the guide base for relative movement in the axial direction of the rotary shaft and adjusting the relative positions of the cutting edges and the guide base.

Abstract: A cutter of a tip dresser for welding gun has three blades, one of which is extended to a central position of the cutter and includes a flat portion and an upstanding portion. A cutting edge is formed on the flat portion reaching from the central position to the upstanding portion. With such arrangement of the cutter, the tip is satisfactorily cut by the cutting edge even in the vicinity of the central position where its circumferential speed is slow.

Abstract: A cutting device for cutting thin-walled honeycomb profiles of metal or plastics for airplane technology includes a cutter which has sharply ground saw-shaped teeth at its periphery; the steep flanks of individual teeth extend opposite to the direction of rotation of the cutter.

Abstract: A circular saw blade is subdivided into two sectors by a serpentine-shaped interruption cut so that at least one noise-damping slot is formed between the two sectors. The serpentine cut forms in the two sectors projections alternating with recesses. The projections of one sector are received in the recesses of the opposite sector. The adjacent projections of the opposite sectors are spaced from each other in the regions of their backsides. The spacing between the backsides of the opposite projections increases towards a central bore of the saw blade.

Abstract: A cutting wheel comprises a thin metal disk having an inner peripheral cutting edge. The cutting wheel is photochemically machined from a flat metal sheet and has locating holes therethrough the diameters of which are held to a very close tolerance.

Abstract: A self-guiding circular saw, the saw having a series of circumferentially spaced teeth around the periphery thereof. A pair of ribs protrude on opposite sides of the saw blade with each rib being co-extensive with the other and extending from the periphery of the blade linearly toward the central area of the blade. The combined thickness of the ribs and the blade being greater than the thickness of the blade but less than the kerf defined by the teeth of the saw such that the ribs will function to guide the saw in a straight path in the cut.

Abstract: A cutter head for cutting templates from cardboards, plastics, and the like, which includes a high speed rotatable cutting stylus, and a holding-down device for holding down the material from which the templates are to be cut out. The holding-down device surrounds the cutting stylus and is firmly but adjustably connected to a non-rotatable but axially freely movable member of the cutter head.