Abstract: A cleaning film designed to remove foreign matter and particulates from working surfaces of cleaning wafers used in semiconductor processes. These processes include wafer sort test for cleaning of probe card pins and FEOL tooling for cleaning during wafer handling equipment and wafer chucks. The debris collected on the cleaning wafer working surfaces is removed by the particle removal film allowing the debris and foreign matter to be discarded. The use of the cleaning film allows the operator to refresh the cleaning wafer without use of an outside vendor and eliminates wet washing and the use of solvents in the cleaning process.

Abstract: An atomization device and a cleaning method thereof are provided. The atomization device includes a jar portion and a host device. The jar portion is movably assembled with the host device and includes a nozzle portion and a container portion. The nozzle portion communicates with the container portion and is provided with an atomizer disposed therein. The atomizer is coupled to the host device. The cleaning method includes the steps of: assembling the jar portion and the host device and turning on the host device; determining whether the container portion contains a liquid; entering a safe mode if the container portion does not contain the liquid or determining whether the nozzle portion contains the liquid if the container portion contains the liquid; and entering an atomization mode if the nozzle portion does not contain the liquid or entering a cleaning mode if the nozzle portion contains the liquid.

Abstract: An access device for installation to a condensation drainage system, such as a drain line of an HVAC unit, includes a main body with connecting ports at opposite ends for sealed, fluid flow inline connection to the drainage system. A top cover releasably secures to the main body to completely cover and seal an open top and interior cavity. A cleanout adapter has a flange that surrounds a bottom opening. The flange includes a seal around its outer periphery and is structured for sliding receipt within either of two transverse slots within the interior cavity to position the bottom opening of the adapter in sealed alignment with either of the connection ports, whereby a pressurized gas or liquid flow source, or a vacuum source can be connected to a top opening of the adapter for clearing a clog in the drain line either upstream or downstream of the access device.

Abstract: Extended reach sluicer systems, devices, and methods for breaking up and retrieving chemical, radioactive, hazardous materials and/or other waste from storage tanks, with mechanical arms and nozzles which utilize fluid jets to break up and liquefy in-tank material. The invention can work with tanks having additional issues, such as but not limited to high temperature or low temperature conditions. An upper assembly attachable to a tank can control the transverse rotation of a vertical mast and with a lower end pivotally attached to a boom having a nozzle assembly attached to an outer end. The boom can telescopically retract and extend to different length positions by cables and pulleys. Controls with take-up mechanisms can elevate up and down or transverse left and right the nozzle assembly.

Abstract: A bioelectrochemical system device may be used to enhance groundwater pollutant chemical removal or degradation. Such a bioelectrochemical system may be inserted into the environment to be remediated through a variety of techniques, such as through insertion into wells or other access points, trench insertion, direct insertion, borehole insertion, or combinations thereof. In some aspects, the bioelectrochemical system device may have a hollow-tube configuration with an outer ring anode and inner ring cathode. In further aspects, the bioelectrochemical system device may have a modular form that can be combined with multiple other modules such one or more bioelectrochemical system devices.

Abstract: A method of forming a car battery tray, the method includes continuously roll-forming a first sheet of metal into a bottom tray, the bottom tray having a first compartment with side walls and to receive a first battery, and the bottom tray having an opening formed into one of the side walls; and continuously roll-forming a second sheet of metal into a top tray, the top tray having a protrusion to engage with the opening of the bottom tray; the bottom tray and top tray connect to secure the first battery in place; the bottom tray and top tray form the car battery tray.

Abstract: A strip deflector has a base body formed with a tip, a compressed-air chamber, and a nozzle for emitting compressed air. A compressed-air source in flow communication with the compressed-air chamber feeds compressed air to the compressed-air chamber and the nozzle. This nozzle has a first nozzle subpassage in flow communication with the compressed-air chamber and a second nozzle subpassage downstream of the first nozzle subpassage in a flow direction. The first nozzle subpassage is formed by a flank closer to the tip of the base body and an opposite flank remote from the tip of the base body, and, at a transition from the first nozzle subpassage to the second nozzle subpassage, the flank closer to the tip of the base body is bent away toward the tip of the base body so as to form a first separation edge.

Abstract: The invention relates to a device (1) for drawing wire (5), comprising a plurality of cone pairs (2, 3, 4) arranged in a row and drawing dies (23, 33, 43) arranged between cones (21, 22, 31, 32, 41, 42) of a cone pair (2, 3, 4), wherein wire (5) being drawn extends from one cone pair (2, 3, 4) to the next cone pair (2, 3, 4). According to the invention, a motor (6, 7, 8) is provided for each cone pair (2, 3, 4) in order to drive said cone pair (2, 3, 4).

Abstract: Equipment for cold-drawing a metal wire. The equipment comprises a sequence of a sleeve and a drawing die in the advancing wire path; the sleeve comprises a hole for inserting the wire to be drawn, and the drawing die comprises a conical hole. The equipment comprises first support means of the sleeve and second support means of the drawing die coupled with each other so as to keep the sleeve and the drawing die in place to allow the wire to advance from the sleeve to the drawing die. The first support means comprises a hole for inserting the metal wire which precedes the hole of the sleeve in the metal wire path; the hole of the first support means is coaxial with the hole of the sleeve and has a smaller diameter than the initial opening of the sleeve hole in the metal wire path.

Abstract: A method of making mechanically-lined pipe with primary expansion by plastically expanding a liner sleeve within an outer pipe, under lining pressure applied internally to the liner sleeve. On relieving the lining pressure, elastic radial contraction of the outer pipe makes a mechanical bond between the outer pipe and the liner sleeve. Then, secondary expansion of the outer pipe is performed under fixing pressure, which may be greater than the lining pressure, applied internally to the liner sleeve at an end portion of the pipe. This makes or strengthens a mechanical bond at the end portion. The resulting pipe joint has an end portion and a body portion inboard of the end portion. The body portion has a first, lesser bonding pressure between the outer pipe and the liner sleeve. The end portion has a second, greater bonding pressure between the outer pipe and liner sleeve.

Abstract: A coiler device (1), provided with a chute roller (50), has: pinch rollers (10a, 10b) that lead a metal sheet carried in along a path line (L1) to a coil-up line (L2) that is curved from the path line (L1); a mandrel (20) that coils the metal sheet and is disposed ahead of the coil-up line (L2); and a chute roller (50) that exposes at least the leading end of the metal sheet to the coil-up line (L2) when being wound to the mandrel (20), and suppresses curving of the metal sheet toward a surface of the metal sheet facing the chute roller (50).

Abstract: The present invention provides a new bending apparatus and bending method of a tube material which makes it possible to achieve all of bending by a large bending radius not requiring large scale equipment or die, bending resistant to wrinkling and buckling at an inner side of the bending, and bending with a high productivity, that is, a ram bending apparatus using a punch 12 and a set of rolls 13, 13 for three-point bending of a tube material wherein the punch 12 has a groove 12a of a width of the width of a circular tube 11 or more and wherein the set of rolls 13, 13 are supported by a frame 14. The rolls 13, 13 can freely move on the frame 14 in directions away from each other in a state contacting the punch 12. The frame 14 has a hollow space 14a enabling free movement of the descending punch 12 and the circular tube 11 bent along with this during the bending of the circular tube 11.

Abstract: An automated bender and its method of operation according to some embodiments of the disclosure is provided. The automated bender includes a carousel which has all of the necessary components for bending a variety of conduit sizes provided thereon. The carousel can be rotated to a desired bending position to bend a particular type of conduit. A straight workpiece is fed into the automated bender and a bent workpiece, which may have multiple bends therein, is output from the automated bender. This bending process is performed without manual intervention. Software for achieving same is provided.

Abstract: An induction heating coil for stably heating a steel tube which is being fed in its axial direction without rotating, the heating being uniform in the circumferential direction and in a narrow range in the axial direction has at least two 1-turn coils in the form of a first turn coil body and a second turn coil body. The inner peripheral length Ln (the non-effective coil length) where the effective number of coil turns is less than the total number of coil turns when the coil is projected in the axial direction and the inner peripheral length L0 of the projected coil bodies (the inner coil length) satisfy Ln/L0<0.05. First and second coil bodies have insulating portions on their connecting portions, and the insulating portions are present in locations separated by a central angle of 5-45° measured from the center of the coil bodies.

Abstract: A press-forming apparatus is an apparatus for producing a press-formed product having a hat-shaped cross section that has an external shape that curves in an L shape along a longitudinal direction in a planar view, and includes a punch, a first blank holder, a second blank holder, a preceding portion, a second die and a pad. When pushing the punch into a die to form a metal plate into the press-formed product, a first guide face of the preceding portion precedes a second guide face of the second die, and thereafter sliding of the first blank holder and the preceding portion relative to the punch is restricted and pushing of the punch into the die is continued in the restricted state to form the press-formed product. By this means, the press-formed product in which cracks and wrinkles are reduced is obtained.

Abstract: An apparatus for forming a metal workpiece having a first surface is described herein. The apparatus includes a trough containing a liquid. The apparatus also includes a support for positioning the metal workpiece in an impact-receiving position. In the impact-receiving position, the first surface is submerged in the liquid. The apparatus includes a driven member for applying multiple impacts to the first surface of the metal workpiece while the metal workpiece is in the impact-receiving position.

Abstract: Methods and apparatus to shape a workpiece are disclosed herein. An exemplary apparatus includes a first die and a second die movable relative to the first die. The apparatus also includes a punch assembly movable relative to the second die and the first die during a stroke cycle of the second die to a position adjacent a workpiece disposed between the second die and the first die. The punch assembly includes a punch to be actuated to pierce the workpiece when the punch assembly is in the position adjacent the workpiece.

Abstract: A pilot assembly and method for metal forming dies has a generally cylindrical pilot with a stripper that strips stock from the pilot when metal forming dies diverge. The pilot assembly is secured to one die member by a fastener by itself or in combination with a window mount. A spring within the pilot assembly contacts the stripper to force the stripper to reciprocate when the dies are pulled apart. Thus, the pilot assembly helps locate the stock within the metal forming die while also having a stripper to help strip the stock from the pilot.

Abstract: A portable tool having a working head that is actuated by an electric motor and/or a hydraulic medium and has a working part. The working part is displaceable in a displacement direction and the working head is rotatable together with the working part in the circumferential direction with respect to the displacement direction. The working head is rotatable together with the working part hydraulically and by the motor. The working head has a segment mounted therein, the segment having a largest extension in the circumferential direction by a first angular amount, and that the rotation of the working head and the working part takes place in the circumferential direction by a second angular amount, wherein values of the first and the second angular amounts are different. Moreover, a method for operating a portable tool is provided using first and second hydraulic pistons.

Abstract: A method of forming a surface in a panel includes positioning a panel blank between a stationary die and a moveable die of a die set, and moving the moveable die toward the stationary die to deform the panel blank therebetween. Positive stresses in the panel blank are maintained in the region of the panel blank that will form the surface by forming a bead along a length of the surface to be formed in the panel blank, as the moveable die moves toward the stationary die. The moveable die continues to move toward the stationary die, while maintaining positive stresses in the panel blank in the region of the panel blank that will form the surface, to further deform the panel blank into a formed shape that includes the surface.

Abstract: An apparatus for inserting flattened tubes into heat exchanger fins includes a fin stack arranging unit in which heat exchanger fins are stacked in the thickness direction and a guide is inserted into at least a cutaway portion. A flattened tube arranging unit holds flattened tubes in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes into the cutaway portions. A contact plate produces a reactive force when the flattened tubes are inserted into the cutaway portions. A flattened tube intermittently inserted fin stack arranging unit aligns the positions of cutaway portions into which the flattened tubes have not been inserted to the positions of the flattened tubes on the flattened tube arranging unit and is used in place of the fin stack arranging unit.

Abstract: An apparatus for inserting flattened tubes into heat exchanger fins includes a guide inserted into at least one out of a plurality of cutaway portions for holding heat exchanger fins in the thickness direction. A guide holding unit holds the heat exchanger fins and the guide with a flattened tube holding unit in which flattened tubes are held in an intermittent arrangement with respect to the cutaway portions into which the guide has not been inserted. A flattened tube insertion driving unit inserts the flattened tubes held on the flattened tube holding unit into the cutaway portion with a platen that is caused to contact another edge in a width direction of the heat exchanger fins when the flattened tubes are inserted into the cutaway portions. Thereafter a compressing unit compresses the heat exchanger fins in the stacking direction.

Abstract: A hollow screw and related process of making is provided, wherein the hollow screw is formed from a generally circular corrosion resistant stainless steel disk cut from flat roll stock. The hollow screw includes a head and an elongated and hollow shaft having a wall thickness between about 0.2 to about 0.7 millimeters extending therefrom and defining a shank portion and a threaded portion having a plurality of threads thereon with a rotational drive mechanism configured to facilitate tightening via the threads. The process involves annealing to soften the stamped hollow screw, followed by thread rolling, and then age hardening the hollow screw. As such, the resultant hollow screw is relatively lightweight, about 50% the mass of a solid core screw made from the same material, with a sufficient thread strength to meet most aerospace applications and contributes to important aircraft fuel economy.

Abstract: A spherical decoupler conduit for connecting misaligned components, and a method for making the same, where the spherical decoupler includes an inlet connection with a first spherical portion; an outer slider with a second spherical portion for pivotably mating with the first spherical portion and a tubular portion; an inner slider having a tubular portion in a telescoping relationship with the tubular portion of the outer slider and a third spherical portion; and an outlet connection with a fourth spherical portion for pivotably mating with the third spherical portion.

Abstract: A method of inserting a rivet (2) into a workpiece (42, 44, 46) comprises moving the rivet (2) and workpiece (42, 44, 46) relative to one another, along a longitudinal axis of the rivet, so as to drive the rivet into the workpiece. The rivet is rotated about its longitudinal axis, relative to the workpiece, for at least part of the time during which it is in contact with the workpiece. The speed of said rotation, or the speed of movement along the longitudinal axis of the rivet, is altered at least once before driving of the rivet into the workpiece is complete.

Abstract: A method and apparatus for accessing an interior of a fuselage assembly. A tower having a number of platform levels may be driven into a selected tower position within an assembly area. The interior of the fuselage assembly may be accessed using the number of platform levels.

Abstract: In a method for producing a riser for inserting into a casting mold used for casting metals, the riser includes a riser body (31) surrounding an inner cavity (36) as a riser volume and is composed of an exothermic and/or insulating riser material (30). To produce a single-piece riser body (31) in a two-part core box (10), a cavity (14) reproducing the outer contour of the riser body (31) is formed and, in order to produce the inner cavity (36), a reversibly expandable king (15) is set in the cavity (14) in such a way that, in the shooting of the riser body (31), the wall region (32), the cup region (33), and the base region (34) of the riser body are formed by the riser material (30) introduced into the intermediate space (41) between the expanded king (15) and the inner wall (40) of the cavity (14).

Abstract: A casting core for an airfoil according to an example of the present disclosure includes, among other things, a first portion extending in a first direction and corresponding to a first cavity of an airfoil. The first portion defines a reference plane along a parting line formed by a casting die. The first portion defines a plurality of grooves corresponding to a plurality of trip strips of the airfoil. Each of the plurality of grooves defines a respective groove axis, and the plurality of grooves are distributed in the first direction along a first side of the reference plane such that one or more of the groove axes are oriented with respect to a pull direction of the casting die. A method for fabricating a gas turbine engine component is also disclosed.

Abstract: Provided is a continuous casting method of steel that prevents a solidification completion position from being changed even when a drawing speed V of a cast slab is changed. The method includes drawing a cast slab by setting a drawing speed V0 while spraying cooling water to the cast slab at a cooling water spray amount W0 [kg/ton-cast slab]. Then, changing the drawing speed to the speed V1 while spraying cooling water to the cast slab at a cooling water spray amount W1 [kg/ton-cast slab]. The method further includes spraying cooling water to the cast slab at a cooling water spray amount Wt [kg/ton-cast slab] during a period of time t that is obtained by dividing a target length Lt by the drawing speed V0. The water spray amount Wt satisfying either formula (1): Wt<W1 under a condition of V1<V0, or formula (2): Wt>W1 under a condition of V1>V0.

Abstract: An example mold assembly for fabricating an infiltrated downhole tool includes a mold defining a bottom of the mold assembly and a funnel operatively coupled to the mold. An infiltration chamber is defined at least partially by the mold and the funnel to receive and contain matrix reinforcement materials and a binder material used to form the infiltrated downhole tool. A thermal mass is positioned within the infiltration chamber above the infiltrated downhole tool for imparting heat to the infiltrated downhole tool following an infiltration process.

Abstract: An apparatus for forming a three-dimensional article is provided, comprising means for providing a predetermined amount of powder, a powder distributor, means for directing an energy beam over a first powder layer causing it fuse in selected locations according to a model, a camera for capturing at least one image of a shape of at least one portion of the predetermined amount of powder that has yet to be initially distributed, the at least one image being captured prior to distribution of an entirety of all portions of the predetermined amount of powder over the surface, and means for comparing at least one value of at least one parameter in the image detected with a corresponding reference parameter value, wherein the at least one parameter is associated with the shape of the powder that has yet to be initially distributed.

Abstract: A heat source isolation mechanism of the laminate molding device includes an intermediate table that is mounted on an upper surface of a main table, an auxiliary table which is provided on an upper surface of the intermediate table and of which a temperature can be adjusted, and a bellows member in which the auxiliary table is disposed and which includes a lower end that is provided on the intermediate table and an upper end that is mounted on the peripheral wall, and which expands as the main table is lowered. The bellows member is made of an insulating material. The recoater head supplies a metal material powder to a molding area inside the bellows member and a powder layer is formed on the auxiliary table, a laser emission unit emits a laser beam to a predetermined area of the powder layer and sintering is performed.

Abstract: A heat exchanger comprises a seamless body, and the seamless body may include a substantially cylindrical configuration defining a radial direction, a circumferential direction, a longitudinal axis, a first cylindrical wall and a plurality of fins. Each fin may extend at least partially in the radial direction and helically along the longitudinal axis. Also, each fin may be at least partially hollow defining an internal flow passage, and each fin of the plurality of fins may be at least partially spaced away from an adjacent fin, defining an external flow passage.

Abstract: The disclosure provides methods to produce ultrathin metal nanowires, the metal nanowires produced therefrom, and the use of the metal nanowires as transparent conductors.

Abstract: In a center-rotation type tailstock, unavailable time due to replacement of parts such as bearings is shortened. A built-in hole is formed in a tailstock spindle. A center rotating mechanism unit is attachable to and detachable from the built-in hole. In the unit, a rotary shaft is supported in a tubular body by bearings. The rotary shaft is made enable a center to be attached. When replacing the parts in the unit attached to the built-in hole, the unit is detached from the built-in hole, and another center rotating mechanism unit incorporating new parts is attached to the built-in hole.

Abstract: There is described a facing accessory for a portable boring apparatus, the accessory comprising: a shaft mounting portion for mounting to a longitudinal shaft of the portable boring apparatus extending along a longitudinal axis; a tool holder secured to the shaft mounting portion and adapted to receive a facing tool thereon, the tool holder comprising at least a telescopic arm for enabling movement of the facing tool towards and away from the shaft mounting portion along a radial axis relative to the longitudinal shaft; and an actuator operatively connected to the second section of the telescopic section for translating the second section relative to the first section along the radial axis.

Abstract: A cutting tool has a holder and an indexable cutting insert secured therein. The holder has a head and a shank extending therefrom along a holder axis, the head having spaced apart lower and upper clamping portions located on opposite sides of a first plane containing the holder axis. The lower clamping portion has spaced apart first and second lower clamping surfaces located on opposite sides of a second plane perpendicular to the first plane, and the upper clamping portion has an upper clamping surface intersected by the second plane. The cutting insert has a peripheral surface with a plurality of circumferentially spaced cutting portions, and the second plane intersects the plurality of cutting portions. The upper clamping surface makes contact with a first abutment portion of the peripheral surface, and a second abutment portion of the peripheral surface makes contact with the first and second lower clamping surfaces.

Abstract: The chuck with locking device has a ratchet mechanism comprising a toothed ring (5) with asymmetrical teeth (5a) fixed to an outer casing (2), a ratchet ring (9) arranged such that it can slide but not rotate with respect to a base body (1) and provided with tabs (11) or teeth (9a) providing ratchet interlocking elements, a release elastic element arranged under compression between the ratchet ring (9) and the toothed ring (5), a locking ring (7) arranged adjacent to the ratchet ring (9) outside the base body (1) and fixed inside a locking control sleeve (14), a cam groove (8) formed in the locking ring (7), and a pin (13) inserted in the cam groove (8) and in a hole (30) formed in the base body (1). The locking control sleeve (14) moves the locking ring (7) and the ratchet ring (5) between locking and unlocking positions.

Abstract: A clamp is disclosed for a key making machine. The clamp may have an anvil, and a door movable toward the anvil to sandwich a key blank therebetween. The clamp may also have a gate pivotally connected to the door and configured to engage the key blank.

Abstract: A round cutting insert has a seating surface with a plurality of projections formed on the seating surface proximate a central opening. The projections do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees. An insert-receiving pocket includes a seating surface with a plurality of dimples for receiving the plurality of projections to prevent rotation of the cutting insert when mounted in the insert-receiving pocket. The plurality of dimples do not extend to an outer perimeter of the seating surface such that the outer perimeter is continuous and uninterrupted a full 360 degrees, thereby maximizing contact between the cutting insert and the pocket.

Abstract: A single-sided four-way indexable cutting insert includes a positive basic shape, a rake surface, a peripheral surface including four side abutment surfaces, a base bearing surface and a screw hole connecting the rake and base bearing surfaces. The insert has an imaginary square frustum which defines a square base containing the cutting insert's base bearing surface, and further defines four isosceles trapezoid side surfaces respectively containing the cutting insert's four side abutment surfaces. A material volume VF of the cutting insert and a void volume VS of the insert fulfill the condition VS/VF?0.25.

Abstract: A cutting insert (1) according to an embodiment has a lower surface (2), an upper surface (3), a side surface (4) disposed between the lower surface (2) and the upper surface (3), a pair of corner cutting edges (5) located along an intersection of the upper surface (3) and the side surface (4), and a major cutting edge (6) located between the pair of corner cutting edges (5). The major cutting edge (6) has a downwardly dented curvilinear part (61) and a pair of straight parts (62) respectively extending from the curvilinear part (61) toward the pair of corner cutting edges (5) in a side view. A portion (6p) of the curvilinear part (61) located lowermost is close to one corner cutting edge (5b) in the side view.

Abstract: A cutting tool has a cutting body with a first insert pocket and an indexable cutting insert removably mounted therein. The first insert pocket has a first seat surface with a plurality of first engagement elements and a first support wall transverse thereto. The cutting insert has upper and lower surfaces and a boundary surface extending therebetween. The lower surface has a plurality of lower engaging elements and the boundary surface has a plurality of alternating first and second peripheral surfaces intersecting the upper surface to form first and second upper cutting edges. In each index position with the lower surface in contact with the first seat surface, the first support wall prevents translation of the cutting insert in a first direction, and the first engagement elements eccentrically contact the lower engaging elements to prevent translation of the cutting insert in a second direction perpendicular to the first direction.

Abstract: Cutting apparatus attachable to a skid steer. The apparatus includes a house attached to a skid steer. The house is attached to an arm, which is attached to a motor that drives a blade. A single hydraulic circuit originating from the skid steer powers both the motor and a cylinder that is capable of pivoting the arm or rotating a guard that partially surrounds the blade. The user is able to operate the motor and cylinder independently of one another. The cutting apparatus is capable of cutting a straight line on horizontal, raised, and vertical surfaces.

Abstract: Provided is an improved lumber edger having a cross cut saw to cross cut lumber into two or more separate pieces to increase the available amount or value of boards, and a method of using the improved lumber edger.

Abstract: A sample cutting assembly includes a base block, a saw pressure plate, an external blade guide, and an internal blade guide. The cutter can be used to conveniently remove samples for Material testing to determine serviceability or material condition. Apparatuses and techniques for using the sample cutting assembly are also disclosed.

Abstract: A keyhole saw blade or sabre saw blade for a power tool comprises a base blade having a cutting edge and a securing shank designed as one piece with the base blade. At least one impression is formed into the base blade or the securing shank.

Abstract: A sharpening device for cost-effectively sharpening dulled saw blades and a method of making and using the same is provided. The sharpening device may form a tooth-like configuration adapted to rotatably grind and sharpen a saw-teeth configuration into a saw blade. The tooth-like configuration may be provided by a plurality of grinding discs and spaces alternatively stacked in a stacked configuration along an arbor that can engage a hand-held power tool. The stack configuration may be retained on the arbor through various stop mechanisms, such as a built-up section or a collar with a set screw. To prevent the stacked configuration from spinning on the arbor from torque transmission, a key way design utilizing a groove cut along the arbor and a complementary arbor hole notch may be employed. Alternatively, the arbor hole may have a shape that matches and mates with the shape of the arbor.

Abstract: A method for machining a workpiece, includes: rotating a rotary tool around a rotation axis, the rotary tool including at least one edge positioned on an outer periphery of the rotary tool around the rotation axis; relatively moving the rotary tool toward the workpiece in a first direction so that the at least one edge cuts the workpiece by a predetermined depth while the rotary tool is rotated around the rotation axis; and relatively moving the rotary tool with respect to the workpiece in a second direction that is substantially perpendicular to the first direction and that is inclined to a third direction substantially perpendicular to the rotation axis and the first direction.

Abstract: A cutting tap includes thread ridges, roots formed between the respective axially adjacent pairs of thread ridges, and a plurality of deburring thread grooves arranged at a constant pitch toward the axial front side of the cutting tap from the rearmost ones of the roots in which the deburring thread grooves are formed, and formed such that a groove bottom diameter of the deburring thread grooves gradually decreases toward the axial front side of the cutting tap. The respective deburring thread grooves have groove bottom diameter reliefs by which the groove bottom dimeter gradually decreases from the front side toward the rear side of each deburring thread groove in the rotation direction of the cutting tap, the groove bottom diameter reliefs being set to be larger than effective diameter reliefs of the thread grooves.