Abstract: A cutting tool with a sensor according to the present invention includes an electrically conductive substrate, an insulation film provided on a surface of the electrically conductive substrate, and a sensor circuit of an electrically conductive film provided on the insulation film. The insulation film includes two consecutive insulation layers. Even if the plural insulation layers each have defects such as cracks and pinholes which possibly impair the insulation property impair the insulation film, the defects present in the plural layers are unlikely to be continuous. Therefore, the insulation film has an improved insulation reliability, thereby ensuring proper function of the sensor circuit in the cutting tool.

Abstract: Rotary cutting tool, in particular for high speed machining with nano-lubrication. The lubricant is fed to the end surface of the cutting part (12) of the tool through a central lubrication channel (22) drilled along the axis of rotation (10) of the tool, with one non-through end, located just near the end surface, which is connected to the latter by secondary channels (24) opening near each end cutting edge (20). Cutting parameters relating, in particular, to the end dedendum angle, the width of end clearance and the width of the circular land of each cutting edge further improve the quality of the work carried out.

Abstract: A non-rotary cutting tool which is to be moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predetermined direction. The cutting tool includes (a) a generally cylindrical shank portion, and (b) a generally semi-cylindrical body portion which has an outer circumferential surface constituted by the rake face and a semi-cylindrical surface. The semi-cylindrical body portion has a cutting edge which is defined by an edge of the rake face and which is covered with a diamond coating. Also disclosed is a process of machining a scroll member of a scroll compressor by using this non-rotary cutting tool.

Abstract: A method of treating a tool includes texturing at least a region of at least one surface of the tool to increase surface roughness and friction resistance. The tool may be in a variety of forms such as a cutting tool insert. The texturing process may be carried out by any suitable method such as laser beam impacting, grinding, sandblasting, molding, chemical etching, photolithography, and/or reactive ion etching. Tools made by the method also are disclosed.

Abstract: A tool-holding seat includes a seat body having a flat bottom face and a flat top face opposite to the flat bottom face. The seat body is formed with a plurality of parallel spaced apart bit-retention holes which extend inwardly from the flat top face. Each of the bit-retention holes is capable of retaining a workpiece-driving bit therein, and defines an axial line along the length thereof. The axial line of each of the bit-retention holes is inclined relative to the flat bottom face at an acute angle. A magnetic piece is embedded in the seat body adjacent to the flat bottom face.

Abstract: A punch for producing decorative cutouts includes a base with a die secured thereto, a cutter mounted above the die and urgeable downward therethrough by a lever pivotally secured to the base, at least one spring compressed between the base and an under face of the cutter, and an ejector mounted in an upper face of the die. The cutter includes an inner leading edge, an outer trailing edge, an inclined periphery extending between the inner and outer edges, and at least one central cutting edge. The die has an outer profile configured to mate with the edges of the cutter, and at least one inner profile configured to mate with the central cutting edge. An ejector is mounted in a recess surrounding the outer profile of the die, whereby cutouts are ejected efficiently from the punch.

Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern includes grooves of at least two different configurations. The apparatus includes a knurl wheel holder that allows angular rotation of the knurl wheel about the holder longitudinal axis while maintaining the knurl wheel point of contact on the longitudinal axis. The apparatus also includes a knurling wheel that includes teeth of at least two different configurations. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article.

Abstract: A cutting insert has a generally parallepipedal body formed with a pair of generally rectangular, planar, and parallel side faces, a mounting formation at at least one of the side faces, a pair of opposite edge faces between the side faces and each forming at each end of the body a cutting face bounded by a cutting edge, and a respective pair of at least partially circularly arcuately concave free faces at each end extending between the respective cutting edges. The cutting edges are arcuate and each cutting edge has a convex part and straight or concave part.

Abstract: A modular cutting tool assembly inludes a tool holder having at least one insert receiving pocket, and at least two cutting inserts interchangeably receivable within the pocket. The pocket has a first lateral support surface forming an angle .theta. with a second lateral support surface as measured in a plane perpendicular to the pocket axis. Each of the cutting inserts has a peripheral flank surface configured to provide a number of abutment features appropriately angled for positioning in abutment with the lateral support surfaces. The peripheral flank surface of one cutting insert is further configured to provide at least two cutting points having a first nose angle, and the peripheral flank surface of the other cutting insert is further configured to provide at least two cutting points having a second nose angle different from the first nose angle.

Abstract: A cutting insert for the chipforming machining of metals is mounted on a holder. A holding surface of the holder includes at least one rib extending in the longitudinal direction of the holder. The bottom surface of the insert includes at least one groove which receives the rib of the holder. The flanks of the rib and groove are inclined, whereby the insert is supported by those flanks. The bottom side of the insert further includes a transverse surfaces extending perpendicular to the groove and which are adapted to engage corresponding transverse surfaces of the holding surface, in order to resist longitudinal forces applied to the cutting insert.

Abstract: An indexible cutting insert for chip-breaking metal machining comprises an upper surface or chip surface, a lower bottom surface which is substantially plane parallel to the upper surface, and at least a side surface extending between the surfaces, which forms an acute angle with the upper surface and an obtuse angle with the bottom surface. The side surface has at least two bulging portions which are intended to function as support surfaces against the support surfaces in an insert seat.

Abstract: A coated hard metal tool includes a hard metal base material having an edged part on an insert ridge portion defining a connecting portion between a flank and a rake face, and a coating film applied to a surface of the hard metal base material. The coating film has a surface-treated part on the insert ridge portion. The coating film is so formed that Rc1/(Rs1+d)<1.0 and Rc2/(Rs2+d)>1.

Abstract: A cutting tool for chip removal machining is composed of hard metal, cermet or ceramic as a sutrate coated with a surface coating being composed of both hexagonal and amorphous boron nitrides. At least an outer most coating is being composed of boron nitrides a thickness of between 1 and 5 .mu.m. The surface has a total thickness which does not exceed 20 .mu.m and at least 20 volume % of the outermost coating is composed of hexagonal boron nitride. The infrared spectrum of the outermost boron nitride layer has absorption lines the wave numbers at 800 to 1400 cm.sup.-1.

Abstract: A cutting tool assembly for turning a stepped square shoulder on a workpiece of a limited maximum depth of cut, the cutting tool assembly including a toolholder for replaceably receiving a substantially square cutting insert with concave side edges and acute insert cutting corners.

Abstract: A cutting insert adapted for cutting-off and grooving operations comprises a body adapted to be mounted in a holder, the body including a pair of side surfaces spaced apart to define a thickness of the body. The body further includes a bottom surface, a rear surface, a top surface and a front surface each extending transversely from one of the side surfaces to the other side surface. A wall is oriented substantially parallel to the side surfaces and is situated midway therebetween. The wall includes a pair of side faces spaced by equal distance from respective ones of the side surfaces, a front side extending upwardly from the front surface, and a top side extending forwardly from the top surface. The front and top sides intersect one another to define a cutting edge formed of the same material as the front and top sides.

Abstract: A rotary cutting tool such as an endmill includes a coating on its radial relief surfaces for enhancing damping of vibratory motion of the tool at speeds which permit the relief surfaces to rub on the workpiece being machined. The coating has a hardness substantially less than that of the remainder of the tool. In a preferred embodiment, the tool is made of tungsten carbide, steel, or ceremet, and the coating is aluminum or an alloy thereof, having a thickness of about 0.0015 inch for tools with cutting diameters of about 1/4 inch to about 1 inch.

Abstract: A cutting insert is cooled during chip removing machining of a workpiece by conducting cooling medium through a porous supporting body of the insert. The cooling medium enters the insert through an inlet formed therein at a location remote from a cutting edge of the insert and exits the insert through an outlet formed in the insert at a location proximate the cutting edge. The discharged cooling medium impinges on, and cools, the workpiece.

Abstract: A tool bit for a tube end squaring tool includes a cutting edge produced by machining or grinding a hook radius in the tool bit stock on the entrance angle side of the cutting edge and an undercut portion within the hook radius just rearwardly of the cutting edge on the work entrance side thereof to cause separation from the hook radius area of metal chips parted from a metal workpiece by the cutting edge to reduce friction and workpiece metal buildup on or adjacent the cutting edge. The undercut configuration reduces manufacturing costs of the tool bit which otherwise would require additional finishing operations to obtain the same reduction of friction at the cutting edge area.

Abstract: An elongate rotary tool including at least one cutting edge that is useful in the machining of workpiece materials is disclosed. The elongate rotary tool comprises a cermet comprising at least one hard component and about 0.2 wt. % to 19 wt. % Co--Ni--Fe-binder. The Co--Ni--Fe-binder is unique in that even when subjected to plastic deformation, the binder substantially maintains its face centered cubic (fcc) crystal structure and avoids stress and/or strain induced transformations.

Abstract: A cutting insert including a flank face, a rake face, and a cutting edge at the intersection of the flank and rake faces that is useful in the chip forming machining of workpiece materials is disclosed. The cutting insert comprises a cermet comprising at least one hard component and about 2 wt % to 19 wt % Co--Ni--FE-binder. The Co--Ni--FE-binder is unique in that even when subjected to plastic deformation, the binder substantially maintains its face centered cubic (fcc) crystal structure and avoids stress and/or strain induced transformations.

Abstract: The tool is provided with a blade section having a shaped surface for shaping an end of an elongated workpiece. This shaped surface extends from the blade section into and through a body section. After the blade section has worn, the tool may be re-ground to provide a fresh blade surface within the original body portion without a need to regrind the shaped surface.

Abstract: A high-speed milling cutter is provided that includes a hub rotatable about an axis, a plurality of radially extending arms, and a plurality of cutting inserts, each of which is connected to a distal portion of one of the arms. The arms are tapered with respect to both the horizontal and vertical planes in such a manner that centrifugally induced tensile stresses are substantially equal at all points between the proximal and distal ends. The cross-sectional area of each arm increases at each point radially inwardly so that the ratio of tensile strength to the amount of centrifugal force generated by the cumulative, peripheral mass of the arm at that point remains substantially constant throughout the length of the arm.

Abstract: Sintered silicon nitride articles for cutting tools and the like, having a high relative density, excellent wear resistance and nicking, particularly at high temperatures, and a method for preparing such articles are disclosed. The articles are made by mixing 0.25 to 3.0 vol % of magnesium oxide powder and 0.3 to 2.0 vol % of ytterbium oxide with silicon nitride starting materials, then crushing and mixing, optionally with 1.0%-vol. or less, preferably 0.5%-vol. or more of aluminum oxide powder and adding an organic binder. The article is formed using a metal press to a shape for usage as SNGN120408 tools. The sintered silicon nitride articles for tools are obtained by degasing the shaped articles, subjecting them to a primary firing at 1700 to 1900.degree. C. and 0.3 to 1.0 MPa temperature and pressure, and following with a secondary firing at a temperature which is substantially lower than the primary firing temperature, at a pressure of 100 MPa or greater.

Abstract: A machining tool beveling the edges of workpieces such as sheet metal is movable relative to the workpiece in the feed direction along the edge of the workpiece and in an action direction perpendicular to the feed direction. It has at least two adjacent cutting edges extending in the feed direction, one of which is the leading edge and the other of which is the trailing edge which is offset from the leading edge. The trailing cutting edge will effect a further cut in the workpiece as the tool is moved along the edge of the workpiece and reciprocated against its edge portion.

Abstract: A cutting insert for use in a rotary milling tool is provided. The cutting insert includes an insert body including a bottom face, a top face, and a side face. A stepped cutting edge is formed at the intersection of the top face and the side face for engaging a workpiece and removing a chip from it. The stepped cutting edge includes at least two offset edge portions which produce distinct, transversely-spaced chip segments during the cutting operation. The offset edge portions are connected by transition edge portions which are disposed at an obtuse angle with respect to the offset edge portions. The angle of the transition edge portions tends to spread the individual chip segments apart during the machining operation to effect a thinning of the chip between the individual chip segments. The entire cutting edge is helically curved so that the cutting edge lies on the surface of a circumscribing cylinder defined by the rotation of the cutting edge about the axis of the milling cutter.

Abstract: A cutting tool for machining titanium and titanium alloys which comprises a tungsten carbide-containing substrate alone or with a tungsten carbide tip brazed thereto. The cutting tool further includes a hard coating on either the substrate alone or on the tungsten carbide tip. The coating may be PVD-applied tungsten carbide, CVD-applied boron carbide or PVD-applied boron carbide.

Abstract: A turning insert includes corner surfaces each defined by at least five circle segments arranged in succession between adjacent side surfaces. Successive ones of the circle segments have different radii of curvature. The segments include a center or first segment intersected by a bisector of the corner surfaces, second and third segments disposed on respective sides of the first segment, and third and fourth segments disposed adjacent respective sides of said second and third segments, respectively. The first segment defines a first radius. The second and third segments defining equal second and third radii. The fourth and fifth segments defining equal fourth and fifth angles. Each of the fourth and fifth angles is larger than the first radius. The first radius is larger than each of the second and third angles.

Abstract: An improved coated hard alloy tool having a substrate made of a hard alloy, and a multi-layer ceramic coating film provided on the surface of the substrate, the coating film including at least one oxide layer. The top several layers of the coating film are missing partially or completely in an area where the tool is brought into frictional contact with a workpiece. At least one oxide layer (such as Al.sub.2 O.sub.3 layer) is included in the missing layers. This increases wear resistance of the coated hard alloy tool.

Abstract: A titanium-nitride coated carbide cutting tool is formed with complex angularly intersecting surfaces which form cutting edges having a generally trapezoidal configuration. The tool creates fine thread-like grooves in a circumferential wall of a tube which may be employed as a heat pipe. The generally trapezoidal resulting groove increases groove surface area that in turn increases working fluid wicking action.

Abstract: A blade head for cutting and planing blades has a blade holder having a plurality of receiving grooves for receiving a cutting and planing blade. The receiving grooves are distributed over the circumference of the blade holder. A plurality of pressurizing elements is positioned in each of the receiving grooves for securing the cutting and planing blade in the receiving groove. At least one adjusting member is positioned in each of the receiving grooves for forcing the pressurizing elements against one another such that the pressurizing elements exert a clamping pressure on the cutting and planing blade. The pressurizing elements have a substantially cylindrical shape with wedge-shaped end faces and a circumferential surface having at least one planar clamping surface. Adjacent ones of the pressurizing elements abut one another with their end faces. The blade holder has clamping counter surfaces cooperating with the planar clamping surfaces of the pressurizing elements.

Abstract: A throw-away cutting tool is disclosed. The tool body of the cutting tool consists of a rod-like shank and a bit mounting component arranged at the front end of the shank. The shank is made of cemented carbide, and is formed with a mounting wall extending toward the front end of the tool body. The bit mounting component is made of steel or sintered metal, and is formed with a bit mounting seat defined by a bottom wall and side walls. In the above cutting tool, high resistance against the cutting force produced by cutting operation can be obtained and separation of the shank and the bit mounting component can be prevented; and high rigidity of the tool body is ensured, the damping capacity of the tool body is increased, and therefore vibration and chatter of the cutting tool can be effectively prevented.

Abstract: An electronic printing system for imaging lines of pixels on thermally sensitive paper is disclosed. The pixels are imaged in accordance with digital data representing whether a particular pixel is to be imaged or not. The system may also operate in a gray scale mode where the optical density of the imaged pixels varies in accordance with digital data. Other features enable the system to image the lines at a high rate of speed and with a lessened power requirement, thus enabling the use of relatively insensitive thermal paper.

Abstract: In machining a substrate surface of a photoreceptor by the use of a cutting machine which supplies cutting lubricant from a reservoir to a cutting tool of the cutting machine, the method comprises a measurement of a cutting tool temperature by a sensor and a control of both the temperature of cutting lubricant and a flow rate thereof. The control is responsive to the cutting tool temperature and suppresses a temperature fluctuation of the cutting tool.

Abstract: In a dovetail shaper metal-cutting tool that is utilized in a chip-type machining process to cut into a metal workpiece a specified dovetail-shaped slot having a specific right hand and left hand dovetail angle and a specified bottom dimension, the improvement comprising: a plurality of cutting teeth at least one of which has a both a right hand dovetail cutting edge to cut into the workpiece the specified right hand dovetail angle and a right hand bottom cutting edge that measures at least one-half of the specified bottom dimension of the dovetail slot to cut into the workpiece at least one-half of the specified bottom dimension, and at least one other of which has both a left hand dovetail cutting edge to cut into the workpiece the specified left hand dovetail angle and a left hand bottom cutting edge that measures at least one-half of the specified bottom dimension of the dovetail slot to cut into the workpiece at least one-half of the specified bottom dimension.

Abstract: An inserted tooth rotary cutter is disclosed which includes a tool body having an axis of rotation therethrough and a plurality of indexable cutting inserts. The tool body is defined by forward and rearward axial faces and a circumferential surface lying between the forward and rearward axial faces. The tool body has a plurality of insert receiving recesses formed in the circumferential surface in circumferentially spaced relation to one another and has a mounting bore formed coaxially therewith. Furthermore, the tool body has a plurality of through holes formed in circumferentially spaced relation to one another. Each through hole is disposed between two adjacent insert receiving recesses and opens to the circumferential surface and the forward axial face. Each insert is releasably secured to a respective insert receiving recess.

Abstract: A cutting tool equipped with a tool state detector which comprises temperature sensors and conductors which are placed on the tool. The invention is characterized in that two or more temperature sensors (10-13) are placed on the tool (1) at mutually different distances from the tool cutting edge (3), so that the temperature distribution in the tool (1), at least at the cutting edge (3) and its immediate vicinity, can be established from electric signal emitted by the sensors (10-13), and that at least some of the sensors are so placed that one or more of the sensors will be worn away in successive sequence as the tool (1) wears. The temperature sensors (10-13) are preferably thermoelements.

Abstract: A cutting insert for chip forming machining comprises an upper rake face, a lower face, and an edge clearance face interconnecting said upper and lower faces. The edge clearance face includes a step located intermediate the upper and lower faces. The step defines a fracture zone so that in the event of insert breakage, the location of the breakage can be controlled. The portion of the insert located below the step defines, in effect, an integral shim.

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: 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: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having peripheral end wall regions, sides and first and second walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and is adaptable for engagement by a toolholder assembly. A land region extends rearwardly from the end wall region and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: A novel construction of a single blade fly cutter type generator wheel. The wheel incorporates a single polycrystalline blade. The blade is counterbalanced by a cut-out portion. An abrasive grit material is provided on a surface of the wheel rim which follows the polycrystalline blade. The abrasive grit cooperates with the blade such that it breaks down large turnings generated by the blade during cutting operations to increase efficiency of the wheel and allows the use of only one blade. An improved method for drilling or cutting of composites is provided wherein softer layers of the composites are not adversely affected during the cutting or drilling operation.

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: A diamond tool for the mirror-finish cutting of non-ferrous materials and a method of manufacturing the same are provided. The diamond tool has a main cutting edge and minute side cutting edges formed at the opposite ends of the main cutting edge so as to intersect the main cutting edge at an angle. The dept .DELTA. of chamfer of the side cutting edge is 1.5 to 5 times the depth of tears formed in the machined surface (0.1 .mu.m.ltoreq..DELTA..ltoreq.1 .mu.m) and the length l.sub.2 of the side cutting edged is 1.5 to 10 times the feed of the diamond tool (0.02 mm.ltoreq.l.sub.2 .ltoreq.0.8 mm). The rake face of the diamond tool comprises two rake faces and two side rake faces. A tool grinding surface plate for manufacturing the diamond tool has a flat surface for grinding the rake faces, and a circumferential tapered surface for grinding the side rake faces.

Abstract: There is disclosed a rotary cutting tool having a cutter body and at least one pair of end and peripheral cutting edges provided on the cutter body. A covering of a generally cylindrical shape is disposed rotatably relative to the cutter body so as to surround the circumferential surface of a forward end portion of the cutter body to define a chip disposal space therebetween. A guide member is secured to the forward end portion of the cutter body for guiding chips produced during a cutting operation to the chip disposal space. Furthermore, a chip disposal pipe is connected to the covering for removing the chips in the chip disposal space.

Abstract: Cutter inserts are provided with a circumferential primary bevel whose width is between 0.05 to 0.2 mm and which has an angle of inclination downward from the top surface of between 20 and 35 degrees. The primary bevel is adjoined by a secondary bevel which has a width between 0.5 and 2.0 mm and an inclination downward from the top surface between 5 and 15 degrees. The primary bevel is at an angle .alpha. between 5 and 15 degrees with respect to the secondary bevel. At the corner radii the secondary bevel comes to an end and thereby forms the strengthened area.

Abstract: A carbide tipped cutting tool adapted to shape the edge surface of a counter top which opens about a sink or bowl mounted therebeneath. The cutting tool is provided with a nylon follower adapted to engage the side wall of the sink or bowl to facilitate cutting and shaping of the edge portion of the counter top. The nylon follower is mounted on a bearing member with a second bearing member mounted beneath the nylon follower to prevent inadvertent dislodging from the shaft of the cutting tool.

Abstract: An improved cutting insert with chip control features and a method for manufacturing the same. An insert body having wall regions, sides and top and bottom walls is adapted for mounting in a pocket in a holder. The insert body has cutting edges and a diagonal notch in the top and bottom sides. A land region extends rearwardly from the end wall region toward the respective top or bottom wall and defines a surface region of a predetermined width. A descending wall initiates in a portion of the land and terminates in a planar floor region having a forward, a rearward and opposed side edges. A back ramp extends upwardly from the planar floor rearward edge and terminates at the respective top or bottom wall. The end wall region can include at least one flat land region adjacent the land region. The flat land region defines a selectively removable portion of the end wall region and after any selective removal thereof represents no more than approximately one-third of the total width of the end wall region.

Abstract: A thermal recording system is used as a recorder in a facsimile equipment or the like, and usually has a first operational mode in which picture data being read out at a pitch of M lines/mm is recorded at a pitch of M lines/mm and a second operational mode in which picture data being read out at a pitch of (M/n) lines/mm are repetitively recorded for every n lines at a pitch of M lines/mm. In particular, in the second operational mode of the system, activation time periods of a thermal head in the repetitive recording of every n lines are controlled to be sequentially shorter as the lines advance, whereby a recording time in the second operational mode can be reduced and the deterioration of the recorded picture quality can be prevented.

Abstract: An acoustic emission sensor comprising a piezoelectric material that is integral with a tooling or machine element in which acoustic emissions are to be sensed.

Abstract: A high speed steel, carbide or ceramic cutting insert or tool carrying an integrally mounted sensor to permit the sensor to sense and monitor machining phenomena on the cutting insert on a continuous basis to determine whether the cutting insert is operating efficiently and effectively.